Mercurial > hg > nginx
annotate src/core/ngx_resolver.c @ 9274:46ecad404a29 default tip
Mail: reset imap tag to empty after authentication attempt.
We need to reset the imap tag to empty after an authentication attempt
completes, otherwise if the next line parsed is incomplete with no tag
(e.g. empty line) then we use the "tag" from the previous buffer which
is now definitely wrong and has been partially overwritten with the most
recently read data (e.g. CRLF).
An example before this patch:
S: * OK IMAP4 ready
C: foobar login a b
S: foobar NO Incorrect username or password.
C:
S:
S: obar BAD invalid command
Then with this patch:
S: * OK IMAP4 ready
C: foobar login a b
S: foobar NO Incorrect username or password.
C:
S: * BAD invalid command
| author | Rob Mueller <robm@fastmailteam.com> |
|---|---|
| date | Wed, 15 May 2024 10:06:00 +0300 |
| parents | c363ad6b3b23 |
| children |
| rev | line source |
|---|---|
| 583 | 1 |
| 2 /* | |
| 3 * Copyright (C) Igor Sysoev | |
| 4412 | 4 * Copyright (C) Nginx, Inc. |
| 583 | 5 */ |
| 6 | |
| 7 | |
| 8 #include <ngx_config.h> | |
| 9 #include <ngx_core.h> | |
| 10 #include <ngx_event.h> | |
| 11 | |
| 12 | |
| 1649 | 13 #define NGX_RESOLVER_UDP_SIZE 4096 |
| 14 | |
| 6367 | 15 #define NGX_RESOLVER_TCP_RSIZE (2 + 65535) |
| 16 #define NGX_RESOLVER_TCP_WSIZE 8192 | |
| 17 | |
| 1649 | 18 |
| 583 | 19 typedef struct { |
| 1649 | 20 u_char ident_hi; |
| 21 u_char ident_lo; | |
| 22 u_char flags_hi; | |
| 23 u_char flags_lo; | |
| 24 u_char nqs_hi; | |
| 25 u_char nqs_lo; | |
| 26 u_char nan_hi; | |
| 27 u_char nan_lo; | |
| 28 u_char nns_hi; | |
| 29 u_char nns_lo; | |
| 30 u_char nar_hi; | |
| 31 u_char nar_lo; | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
32 } ngx_resolver_hdr_t; |
| 1649 | 33 |
| 34 | |
| 35 typedef struct { | |
| 36 u_char type_hi; | |
| 37 u_char type_lo; | |
| 38 u_char class_hi; | |
| 39 u_char class_lo; | |
| 40 } ngx_resolver_qs_t; | |
| 41 | |
| 42 | |
| 43 typedef struct { | |
| 44 u_char type_hi; | |
| 45 u_char type_lo; | |
| 46 u_char class_hi; | |
| 47 u_char class_lo; | |
| 48 u_char ttl[4]; | |
| 49 u_char len_hi; | |
| 50 u_char len_lo; | |
| 51 } ngx_resolver_an_t; | |
| 52 | |
| 53 | |
|
7875
0c5e84096d99
Core: added the ngx_rbtree_data() macro.
Vladimir Homutov <vl@nginx.com>
parents:
7854
diff
changeset
|
54 #define ngx_resolver_node(n) ngx_rbtree_data(n, ngx_resolver_node_t, node) |
|
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
55 |
|
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
56 |
|
6922
a72886067bbb
Added missing static specifiers.
Eran Kornblau <erankor@gmail.com>
parents:
6860
diff
changeset
|
57 static ngx_int_t ngx_udp_connect(ngx_resolver_connection_t *rec); |
|
a72886067bbb
Added missing static specifiers.
Eran Kornblau <erankor@gmail.com>
parents:
6860
diff
changeset
|
58 static ngx_int_t ngx_tcp_connect(ngx_resolver_connection_t *rec); |
| 1649 | 59 |
| 60 | |
| 1906 | 61 static void ngx_resolver_cleanup(void *data); |
| 62 static void ngx_resolver_cleanup_tree(ngx_resolver_t *r, ngx_rbtree_t *tree); | |
| 1649 | 63 static ngx_int_t ngx_resolve_name_locked(ngx_resolver_t *r, |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
64 ngx_resolver_ctx_t *ctx, ngx_str_t *name); |
| 1649 | 65 static void ngx_resolver_expire(ngx_resolver_t *r, ngx_rbtree_t *tree, |
| 66 ngx_queue_t *queue); | |
| 67 static ngx_int_t ngx_resolver_send_query(ngx_resolver_t *r, | |
| 68 ngx_resolver_node_t *rn); | |
| 6367 | 69 static ngx_int_t ngx_resolver_send_udp_query(ngx_resolver_t *r, |
| 70 ngx_resolver_connection_t *rec, u_char *query, u_short qlen); | |
| 71 static ngx_int_t ngx_resolver_send_tcp_query(ngx_resolver_t *r, | |
| 72 ngx_resolver_connection_t *rec, u_char *query, u_short qlen); | |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
73 static ngx_int_t ngx_resolver_create_name_query(ngx_resolver_t *r, |
|
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
74 ngx_resolver_node_t *rn, ngx_str_t *name); |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
75 static ngx_int_t ngx_resolver_create_srv_query(ngx_resolver_t *r, |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
76 ngx_resolver_node_t *rn, ngx_str_t *name); |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
77 static ngx_int_t ngx_resolver_create_addr_query(ngx_resolver_t *r, |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
78 ngx_resolver_node_t *rn, ngx_resolver_addr_t *addr); |
| 1649 | 79 static void ngx_resolver_resend_handler(ngx_event_t *ev); |
| 80 static time_t ngx_resolver_resend(ngx_resolver_t *r, ngx_rbtree_t *tree, | |
| 81 ngx_queue_t *queue); | |
|
6196
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
82 static ngx_uint_t ngx_resolver_resend_empty(ngx_resolver_t *r); |
| 6367 | 83 static void ngx_resolver_udp_read(ngx_event_t *rev); |
| 84 static void ngx_resolver_tcp_write(ngx_event_t *wev); | |
| 85 static void ngx_resolver_tcp_read(ngx_event_t *rev); | |
| 1649 | 86 static void ngx_resolver_process_response(ngx_resolver_t *r, u_char *buf, |
| 6367 | 87 size_t n, ngx_uint_t tcp); |
| 1649 | 88 static void ngx_resolver_process_a(ngx_resolver_t *r, u_char *buf, size_t n, |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
89 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t qtype, |
| 6367 | 90 ngx_uint_t nan, ngx_uint_t trunc, ngx_uint_t ans); |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
91 static void ngx_resolver_process_srv(ngx_resolver_t *r, u_char *buf, size_t n, |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
92 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan, |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
93 ngx_uint_t trunc, ngx_uint_t ans); |
| 1649 | 94 static void ngx_resolver_process_ptr(ngx_resolver_t *r, u_char *buf, size_t n, |
|
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
95 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan); |
| 1649 | 96 static ngx_resolver_node_t *ngx_resolver_lookup_name(ngx_resolver_t *r, |
| 97 ngx_str_t *name, uint32_t hash); | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
98 static ngx_resolver_node_t *ngx_resolver_lookup_srv(ngx_resolver_t *r, |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
99 ngx_str_t *name, uint32_t hash); |
| 1649 | 100 static ngx_resolver_node_t *ngx_resolver_lookup_addr(ngx_resolver_t *r, |
| 101 in_addr_t addr); | |
| 102 static void ngx_resolver_rbtree_insert_value(ngx_rbtree_node_t *temp, | |
| 103 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel); | |
| 104 static ngx_int_t ngx_resolver_copy(ngx_resolver_t *r, ngx_str_t *name, | |
| 105 u_char *buf, u_char *src, u_char *last); | |
|
7051
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
106 static ngx_int_t ngx_resolver_set_timeout(ngx_resolver_t *r, |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
107 ngx_resolver_ctx_t *ctx); |
| 1649 | 108 static void ngx_resolver_timeout_handler(ngx_event_t *ev); |
| 109 static void ngx_resolver_free_node(ngx_resolver_t *r, ngx_resolver_node_t *rn); | |
| 110 static void *ngx_resolver_alloc(ngx_resolver_t *r, size_t size); | |
| 1903 | 111 static void *ngx_resolver_calloc(ngx_resolver_t *r, size_t size); |
| 1649 | 112 static void ngx_resolver_free(ngx_resolver_t *r, void *p); |
| 113 static void ngx_resolver_free_locked(ngx_resolver_t *r, void *p); | |
| 114 static void *ngx_resolver_dup(ngx_resolver_t *r, void *src, size_t size); | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
115 static ngx_resolver_addr_t *ngx_resolver_export(ngx_resolver_t *r, |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
116 ngx_resolver_node_t *rn, ngx_uint_t rotate); |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
117 static void ngx_resolver_report_srv(ngx_resolver_t *r, ngx_resolver_ctx_t *ctx); |
|
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
118 static u_char *ngx_resolver_log_error(ngx_log_t *log, u_char *buf, size_t len); |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
119 static void ngx_resolver_resolve_srv_names(ngx_resolver_ctx_t *ctx, |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
120 ngx_resolver_node_t *rn); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
121 static void ngx_resolver_srv_names_handler(ngx_resolver_ctx_t *ctx); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
122 static ngx_int_t ngx_resolver_cmp_srvs(const void *one, const void *two); |
| 1649 | 123 |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
124 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
125 static void ngx_resolver_rbtree_insert_addr6_value(ngx_rbtree_node_t *temp, |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
126 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
127 static ngx_resolver_node_t *ngx_resolver_lookup_addr6(ngx_resolver_t *r, |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
128 struct in6_addr *addr, uint32_t hash); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
129 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
130 |
| 1649 | 131 |
| 132 ngx_resolver_t * | |
|
4225
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
133 ngx_resolver_create(ngx_conf_t *cf, ngx_str_t *names, ngx_uint_t n) |
| 1649 | 134 { |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
135 ngx_str_t s; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
136 ngx_url_t u; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
137 ngx_uint_t i, j; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
138 ngx_resolver_t *r; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
139 ngx_pool_cleanup_t *cln; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
140 ngx_resolver_connection_t *rec; |
| 1649 | 141 |
|
7298
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
142 r = ngx_pcalloc(cf->pool, sizeof(ngx_resolver_t)); |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
143 if (r == NULL) { |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
144 return NULL; |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
145 } |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
146 |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
147 r->event = ngx_pcalloc(cf->pool, sizeof(ngx_event_t)); |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
148 if (r->event == NULL) { |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
149 return NULL; |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
150 } |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
151 |
|
1913
c0f873458e2b
use cf->cycle->new_log because at merge stage cf->pool->log is old log
Igor Sysoev <igor@sysoev.ru>
parents:
1906
diff
changeset
|
152 cln = ngx_pool_cleanup_add(cf->pool, 0); |
| 1906 | 153 if (cln == NULL) { |
| 154 return NULL; | |
| 155 } | |
| 156 | |
| 157 cln->handler = ngx_resolver_cleanup; | |
| 158 cln->data = r; | |
| 159 | |
|
8055
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
160 r->ipv4 = 1; |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
161 |
| 1687 | 162 ngx_rbtree_init(&r->name_rbtree, &r->name_sentinel, |
| 163 ngx_resolver_rbtree_insert_value); | |
| 164 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
165 ngx_rbtree_init(&r->srv_rbtree, &r->srv_sentinel, |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
166 ngx_resolver_rbtree_insert_value); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
167 |
| 1687 | 168 ngx_rbtree_init(&r->addr_rbtree, &r->addr_sentinel, |
| 169 ngx_rbtree_insert_value); | |
| 1649 | 170 |
| 1685 | 171 ngx_queue_init(&r->name_resend_queue); |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
172 ngx_queue_init(&r->srv_resend_queue); |
| 1685 | 173 ngx_queue_init(&r->addr_resend_queue); |
| 174 | |
| 175 ngx_queue_init(&r->name_expire_queue); | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
176 ngx_queue_init(&r->srv_expire_queue); |
| 1685 | 177 ngx_queue_init(&r->addr_expire_queue); |
| 1649 | 178 |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
179 #if (NGX_HAVE_INET6) |
|
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
180 r->ipv6 = 1; |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
181 |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
182 ngx_rbtree_init(&r->addr6_rbtree, &r->addr6_sentinel, |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
183 ngx_resolver_rbtree_insert_addr6_value); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
184 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
185 ngx_queue_init(&r->addr6_resend_queue); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
186 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
187 ngx_queue_init(&r->addr6_expire_queue); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
188 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
189 |
| 1649 | 190 r->event->handler = ngx_resolver_resend_handler; |
| 191 r->event->data = r; | |
|
2785
d478379e51ac
*) refactor error_log processing: listen socket log might inherit built-in
Igor Sysoev <igor@sysoev.ru>
parents:
2490
diff
changeset
|
192 r->event->log = &cf->cycle->new_log; |
|
7052
70e65bf8dfd7
Resolver: cancelable resend timer event.
Ruslan Ermilov <ru@nginx.com>
parents:
7051
diff
changeset
|
193 r->event->cancelable = 1; |
| 1649 | 194 r->ident = -1; |
| 195 | |
| 196 r->resend_timeout = 5; | |
| 6367 | 197 r->tcp_timeout = 5; |
| 1649 | 198 r->expire = 30; |
|
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
199 r->valid = 0; |
| 1649 | 200 |
|
2785
d478379e51ac
*) refactor error_log processing: listen socket log might inherit built-in
Igor Sysoev <igor@sysoev.ru>
parents:
2490
diff
changeset
|
201 r->log = &cf->cycle->new_log; |
|
3763
beca53d6ab3c
decrease resolver errors level to error
Igor Sysoev <igor@sysoev.ru>
parents:
3642
diff
changeset
|
202 r->log_level = NGX_LOG_ERR; |
| 1649 | 203 |
|
4784
dd63abf20ba7
Resolver: fixed possible memory leak in ngx_resolver_create().
Maxim Dounin <mdounin@mdounin.ru>
parents:
4684
diff
changeset
|
204 if (n) { |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
205 if (ngx_array_init(&r->connections, cf->pool, n, |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
206 sizeof(ngx_resolver_connection_t)) |
|
4784
dd63abf20ba7
Resolver: fixed possible memory leak in ngx_resolver_create().
Maxim Dounin <mdounin@mdounin.ru>
parents:
4684
diff
changeset
|
207 != NGX_OK) |
|
dd63abf20ba7
Resolver: fixed possible memory leak in ngx_resolver_create().
Maxim Dounin <mdounin@mdounin.ru>
parents:
4684
diff
changeset
|
208 { |
|
dd63abf20ba7
Resolver: fixed possible memory leak in ngx_resolver_create().
Maxim Dounin <mdounin@mdounin.ru>
parents:
4684
diff
changeset
|
209 return NULL; |
|
dd63abf20ba7
Resolver: fixed possible memory leak in ngx_resolver_create().
Maxim Dounin <mdounin@mdounin.ru>
parents:
4684
diff
changeset
|
210 } |
|
dd63abf20ba7
Resolver: fixed possible memory leak in ngx_resolver_create().
Maxim Dounin <mdounin@mdounin.ru>
parents:
4684
diff
changeset
|
211 } |
|
dd63abf20ba7
Resolver: fixed possible memory leak in ngx_resolver_create().
Maxim Dounin <mdounin@mdounin.ru>
parents:
4684
diff
changeset
|
212 |
|
4225
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
213 for (i = 0; i < n; i++) { |
|
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
214 if (ngx_strncmp(names[i].data, "valid=", 6) == 0) { |
|
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
215 s.len = names[i].len - 6; |
|
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
216 s.data = names[i].data + 6; |
|
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
217 |
|
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
218 r->valid = ngx_parse_time(&s, 1); |
|
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
219 |
| 4474 | 220 if (r->valid == (time_t) NGX_ERROR) { |
|
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
221 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
|
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
222 "invalid parameter: %V", &names[i]); |
|
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
223 return NULL; |
|
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
224 } |
|
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
225 |
|
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
226 continue; |
|
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
227 } |
|
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
228 |
|
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
229 #if (NGX_HAVE_INET6) |
|
8055
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
230 if (ngx_strncmp(names[i].data, "ipv4=", 5) == 0) { |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
231 |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
232 if (ngx_strcmp(&names[i].data[5], "on") == 0) { |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
233 r->ipv4 = 1; |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
234 |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
235 } else if (ngx_strcmp(&names[i].data[5], "off") == 0) { |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
236 r->ipv4 = 0; |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
237 |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
238 } else { |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
239 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
240 "invalid parameter: %V", &names[i]); |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
241 return NULL; |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
242 } |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
243 |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
244 continue; |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
245 } |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
246 |
|
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
247 if (ngx_strncmp(names[i].data, "ipv6=", 5) == 0) { |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
248 |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
249 if (ngx_strcmp(&names[i].data[5], "on") == 0) { |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
250 r->ipv6 = 1; |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
251 |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
252 } else if (ngx_strcmp(&names[i].data[5], "off") == 0) { |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
253 r->ipv6 = 0; |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
254 |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
255 } else { |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
256 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
257 "invalid parameter: %V", &names[i]); |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
258 return NULL; |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
259 } |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
260 |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
261 continue; |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
262 } |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
263 #endif |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
264 |
|
4225
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
265 ngx_memzero(&u, sizeof(ngx_url_t)); |
|
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
266 |
|
4671
af9342747669
Support for IPv6 literals and an optional port in resolver.
Ruslan Ermilov <ru@nginx.com>
parents:
4653
diff
changeset
|
267 u.url = names[i]; |
|
af9342747669
Support for IPv6 literals and an optional port in resolver.
Ruslan Ermilov <ru@nginx.com>
parents:
4653
diff
changeset
|
268 u.default_port = 53; |
|
af9342747669
Support for IPv6 literals and an optional port in resolver.
Ruslan Ermilov <ru@nginx.com>
parents:
4653
diff
changeset
|
269 |
|
af9342747669
Support for IPv6 literals and an optional port in resolver.
Ruslan Ermilov <ru@nginx.com>
parents:
4653
diff
changeset
|
270 if (ngx_parse_url(cf->pool, &u) != NGX_OK) { |
|
4643
bc5f881323b8
Fixed potential null pointer dereference in ngx_resolver_create().
Ruslan Ermilov <ru@nginx.com>
parents:
4619
diff
changeset
|
271 if (u.err) { |
|
bc5f881323b8
Fixed potential null pointer dereference in ngx_resolver_create().
Ruslan Ermilov <ru@nginx.com>
parents:
4619
diff
changeset
|
272 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
|
bc5f881323b8
Fixed potential null pointer dereference in ngx_resolver_create().
Ruslan Ermilov <ru@nginx.com>
parents:
4619
diff
changeset
|
273 "%s in resolver \"%V\"", |
|
4671
af9342747669
Support for IPv6 literals and an optional port in resolver.
Ruslan Ermilov <ru@nginx.com>
parents:
4653
diff
changeset
|
274 u.err, &u.url); |
|
4643
bc5f881323b8
Fixed potential null pointer dereference in ngx_resolver_create().
Ruslan Ermilov <ru@nginx.com>
parents:
4619
diff
changeset
|
275 } |
|
bc5f881323b8
Fixed potential null pointer dereference in ngx_resolver_create().
Ruslan Ermilov <ru@nginx.com>
parents:
4619
diff
changeset
|
276 |
|
4225
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
277 return NULL; |
|
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
278 } |
|
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
279 |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
280 rec = ngx_array_push_n(&r->connections, u.naddrs); |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
281 if (rec == NULL) { |
|
1683
1e0b028055ec
allow to use IP addresses without defined resolver
Igor Sysoev <igor@sysoev.ru>
parents:
1679
diff
changeset
|
282 return NULL; |
|
1e0b028055ec
allow to use IP addresses without defined resolver
Igor Sysoev <igor@sysoev.ru>
parents:
1679
diff
changeset
|
283 } |
|
1e0b028055ec
allow to use IP addresses without defined resolver
Igor Sysoev <igor@sysoev.ru>
parents:
1679
diff
changeset
|
284 |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
285 ngx_memzero(rec, u.naddrs * sizeof(ngx_resolver_connection_t)); |
|
4684
f5c2c9d656f9
When "resolver" is configured with a domain name, only the first
Ruslan Ermilov <ru@nginx.com>
parents:
4683
diff
changeset
|
286 |
|
f5c2c9d656f9
When "resolver" is configured with a domain name, only the first
Ruslan Ermilov <ru@nginx.com>
parents:
4683
diff
changeset
|
287 for (j = 0; j < u.naddrs; j++) { |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
288 rec[j].sockaddr = u.addrs[j].sockaddr; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
289 rec[j].socklen = u.addrs[j].socklen; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
290 rec[j].server = u.addrs[j].name; |
| 6367 | 291 rec[j].resolver = r; |
|
4684
f5c2c9d656f9
When "resolver" is configured with a domain name, only the first
Ruslan Ermilov <ru@nginx.com>
parents:
4683
diff
changeset
|
292 } |
|
1683
1e0b028055ec
allow to use IP addresses without defined resolver
Igor Sysoev <igor@sysoev.ru>
parents:
1679
diff
changeset
|
293 } |
| 1649 | 294 |
|
8055
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
295 #if (NGX_HAVE_INET6) |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
296 if (r->ipv4 + r->ipv6 == 0) { |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
297 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
298 "\"ipv4\" and \"ipv6\" cannot both be \"off\""); |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
299 return NULL; |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
300 } |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
301 #endif |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
302 |
|
7299
faf14dc9ab4d
Resolver: require name servers.
Ruslan Ermilov <ru@nginx.com>
parents:
7298
diff
changeset
|
303 if (n && r->connections.nelts == 0) { |
|
faf14dc9ab4d
Resolver: require name servers.
Ruslan Ermilov <ru@nginx.com>
parents:
7298
diff
changeset
|
304 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "no name servers defined"); |
|
faf14dc9ab4d
Resolver: require name servers.
Ruslan Ermilov <ru@nginx.com>
parents:
7298
diff
changeset
|
305 return NULL; |
|
faf14dc9ab4d
Resolver: require name servers.
Ruslan Ermilov <ru@nginx.com>
parents:
7298
diff
changeset
|
306 } |
|
faf14dc9ab4d
Resolver: require name servers.
Ruslan Ermilov <ru@nginx.com>
parents:
7298
diff
changeset
|
307 |
| 1649 | 308 return r; |
| 309 } | |
| 310 | |
| 311 | |
| 1906 | 312 static void |
| 313 ngx_resolver_cleanup(void *data) | |
| 314 { | |
| 315 ngx_resolver_t *r = data; | |
| 316 | |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
317 ngx_uint_t i; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
318 ngx_resolver_connection_t *rec; |
|
4225
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
319 |
|
7298
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
320 ngx_log_debug0(NGX_LOG_DEBUG_CORE, ngx_cycle->log, 0, "cleanup resolver"); |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
321 |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
322 ngx_resolver_cleanup_tree(r, &r->name_rbtree); |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
323 |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
324 ngx_resolver_cleanup_tree(r, &r->srv_rbtree); |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
325 |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
326 ngx_resolver_cleanup_tree(r, &r->addr_rbtree); |
| 1906 | 327 |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
328 #if (NGX_HAVE_INET6) |
|
7298
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
329 ngx_resolver_cleanup_tree(r, &r->addr6_rbtree); |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
330 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
331 |
|
7298
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
332 if (r->event->timer_set) { |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
333 ngx_del_timer(r->event); |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
334 } |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
335 |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
336 rec = r->connections.elts; |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
337 |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
338 for (i = 0; i < r->connections.nelts; i++) { |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
339 if (rec[i].udp) { |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
340 ngx_close_connection(rec[i].udp); |
| 1906 | 341 } |
| 342 | |
|
7298
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
343 if (rec[i].tcp) { |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
344 ngx_close_connection(rec[i].tcp); |
| 1906 | 345 } |
| 346 | |
|
7298
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
347 if (rec[i].read_buf) { |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
348 ngx_resolver_free(r, rec[i].read_buf->start); |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
349 ngx_resolver_free(r, rec[i].read_buf); |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
350 } |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
351 |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
352 if (rec[i].write_buf) { |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
353 ngx_resolver_free(r, rec[i].write_buf->start); |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
354 ngx_resolver_free(r, rec[i].write_buf); |
|
f37d8fb25de5
Resolver: allocate resolver from configuration pool.
Ruslan Ermilov <ru@nginx.com>
parents:
7290
diff
changeset
|
355 } |
| 1906 | 356 } |
| 357 } | |
| 358 | |
| 359 | |
| 360 static void | |
| 361 ngx_resolver_cleanup_tree(ngx_resolver_t *r, ngx_rbtree_t *tree) | |
| 362 { | |
| 363 ngx_resolver_ctx_t *ctx, *next; | |
| 364 ngx_resolver_node_t *rn; | |
| 365 | |
| 366 while (tree->root != tree->sentinel) { | |
| 367 | |
|
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
368 rn = ngx_resolver_node(ngx_rbtree_min(tree->root, tree->sentinel)); |
| 1906 | 369 |
| 370 ngx_queue_remove(&rn->queue); | |
| 371 | |
| 372 for (ctx = rn->waiting; ctx; ctx = next) { | |
|
2006
b52cb9bf2064
style fix: remove tabs and trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
1969
diff
changeset
|
373 next = ctx->next; |
| 1906 | 374 |
| 375 if (ctx->event) { | |
|
6844
259e2a76e8fb
Resolver: fixed possible use-after-free in worker on fast shutdown.
Ruslan Ermilov <ru@nginx.com>
parents:
6843
diff
changeset
|
376 if (ctx->event->timer_set) { |
|
259e2a76e8fb
Resolver: fixed possible use-after-free in worker on fast shutdown.
Ruslan Ermilov <ru@nginx.com>
parents:
6843
diff
changeset
|
377 ngx_del_timer(ctx->event); |
|
259e2a76e8fb
Resolver: fixed possible use-after-free in worker on fast shutdown.
Ruslan Ermilov <ru@nginx.com>
parents:
6843
diff
changeset
|
378 } |
|
259e2a76e8fb
Resolver: fixed possible use-after-free in worker on fast shutdown.
Ruslan Ermilov <ru@nginx.com>
parents:
6843
diff
changeset
|
379 |
| 1906 | 380 ngx_resolver_free(r, ctx->event); |
| 381 } | |
| 382 | |
| 383 ngx_resolver_free(r, ctx); | |
| 384 } | |
| 385 | |
| 386 ngx_rbtree_delete(tree, &rn->node); | |
| 387 | |
| 388 ngx_resolver_free_node(r, rn); | |
| 389 } | |
| 390 } | |
| 391 | |
| 392 | |
| 1649 | 393 ngx_resolver_ctx_t * |
| 394 ngx_resolve_start(ngx_resolver_t *r, ngx_resolver_ctx_t *temp) | |
| 395 { | |
| 396 in_addr_t addr; | |
| 397 ngx_resolver_ctx_t *ctx; | |
| 398 | |
| 399 if (temp) { | |
| 400 addr = ngx_inet_addr(temp->name.data, temp->name.len); | |
| 401 | |
| 402 if (addr != INADDR_NONE) { | |
| 403 temp->resolver = r; | |
| 404 temp->state = NGX_OK; | |
| 405 temp->naddrs = 1; | |
| 406 temp->addrs = &temp->addr; | |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
407 temp->addr.sockaddr = (struct sockaddr *) &temp->sin; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
408 temp->addr.socklen = sizeof(struct sockaddr_in); |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
409 ngx_memzero(&temp->sin, sizeof(struct sockaddr_in)); |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
410 temp->sin.sin_family = AF_INET; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
411 temp->sin.sin_addr.s_addr = addr; |
| 1649 | 412 temp->quick = 1; |
| 413 | |
| 414 return temp; | |
| 415 } | |
| 416 } | |
| 417 | |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
418 if (r->connections.nelts == 0) { |
|
1683
1e0b028055ec
allow to use IP addresses without defined resolver
Igor Sysoev <igor@sysoev.ru>
parents:
1679
diff
changeset
|
419 return NGX_NO_RESOLVER; |
|
1e0b028055ec
allow to use IP addresses without defined resolver
Igor Sysoev <igor@sysoev.ru>
parents:
1679
diff
changeset
|
420 } |
|
1e0b028055ec
allow to use IP addresses without defined resolver
Igor Sysoev <igor@sysoev.ru>
parents:
1679
diff
changeset
|
421 |
| 1649 | 422 ctx = ngx_resolver_calloc(r, sizeof(ngx_resolver_ctx_t)); |
| 423 | |
| 424 if (ctx) { | |
| 425 ctx->resolver = r; | |
| 426 } | |
| 427 | |
| 428 return ctx; | |
| 429 } | |
| 430 | |
| 431 | |
| 432 ngx_int_t | |
| 433 ngx_resolve_name(ngx_resolver_ctx_t *ctx) | |
| 434 { | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
435 size_t slen; |
| 1649 | 436 ngx_int_t rc; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
437 ngx_str_t name; |
| 1649 | 438 ngx_resolver_t *r; |
| 439 | |
| 440 r = ctx->resolver; | |
| 441 | |
|
5505
d091d16ed398
Resolver: added support for domain names with a trailing dot.
Yichun Zhang <agentzh@gmail.com>
parents:
5485
diff
changeset
|
442 if (ctx->name.len > 0 && ctx->name.data[ctx->name.len - 1] == '.') { |
|
d091d16ed398
Resolver: added support for domain names with a trailing dot.
Yichun Zhang <agentzh@gmail.com>
parents:
5485
diff
changeset
|
443 ctx->name.len--; |
|
d091d16ed398
Resolver: added support for domain names with a trailing dot.
Yichun Zhang <agentzh@gmail.com>
parents:
5485
diff
changeset
|
444 } |
|
d091d16ed398
Resolver: added support for domain names with a trailing dot.
Yichun Zhang <agentzh@gmail.com>
parents:
5485
diff
changeset
|
445 |
| 1649 | 446 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, |
| 447 "resolve: \"%V\"", &ctx->name); | |
| 448 | |
| 449 if (ctx->quick) { | |
| 450 ctx->handler(ctx); | |
| 451 return NGX_OK; | |
| 452 } | |
| 453 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
454 if (ctx->service.len) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
455 slen = ctx->service.len; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
456 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
457 if (ngx_strlchr(ctx->service.data, |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
458 ctx->service.data + ctx->service.len, '.') |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
459 == NULL) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
460 { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
461 slen += sizeof("_._tcp") - 1; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
462 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
463 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
464 name.len = slen + 1 + ctx->name.len; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
465 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
466 name.data = ngx_resolver_alloc(r, name.len); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
467 if (name.data == NULL) { |
|
7039
a39bc74873fa
Resolver: fixed allocation error handling while resolving SRV.
Bart Warmerdam <bartw@xs4all.nl>
parents:
6922
diff
changeset
|
468 goto failed; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
469 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
470 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
471 if (slen == ctx->service.len) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
472 ngx_sprintf(name.data, "%V.%V", &ctx->service, &ctx->name); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
473 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
474 } else { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
475 ngx_sprintf(name.data, "_%V._tcp.%V", &ctx->service, &ctx->name); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
476 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
477 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
478 /* lock name mutex */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
479 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
480 rc = ngx_resolve_name_locked(r, ctx, &name); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
481 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
482 ngx_resolver_free(r, name.data); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
483 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
484 } else { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
485 /* lock name mutex */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
486 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
487 rc = ngx_resolve_name_locked(r, ctx, &ctx->name); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
488 } |
| 1649 | 489 |
| 490 if (rc == NGX_OK) { | |
| 491 return NGX_OK; | |
| 492 } | |
| 493 | |
| 494 /* unlock name mutex */ | |
| 495 | |
| 496 if (rc == NGX_AGAIN) { | |
| 497 return NGX_OK; | |
| 498 } | |
| 499 | |
|
1904
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
500 /* NGX_ERROR */ |
| 1649 | 501 |
| 502 if (ctx->event) { | |
|
1904
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
503 ngx_resolver_free(r, ctx->event); |
| 1649 | 504 } |
| 505 | |
|
7039
a39bc74873fa
Resolver: fixed allocation error handling while resolving SRV.
Bart Warmerdam <bartw@xs4all.nl>
parents:
6922
diff
changeset
|
506 failed: |
|
a39bc74873fa
Resolver: fixed allocation error handling while resolving SRV.
Bart Warmerdam <bartw@xs4all.nl>
parents:
6922
diff
changeset
|
507 |
|
1904
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
508 ngx_resolver_free(r, ctx); |
| 1649 | 509 |
| 510 return NGX_ERROR; | |
| 511 } | |
| 512 | |
| 513 | |
| 514 void | |
| 515 ngx_resolve_name_done(ngx_resolver_ctx_t *ctx) | |
| 516 { | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
517 ngx_uint_t i; |
| 1649 | 518 ngx_resolver_t *r; |
| 519 ngx_resolver_ctx_t *w, **p; | |
| 520 ngx_resolver_node_t *rn; | |
| 521 | |
| 522 r = ctx->resolver; | |
| 523 | |
| 524 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, | |
| 525 "resolve name done: %i", ctx->state); | |
| 526 | |
| 527 if (ctx->quick) { | |
| 528 return; | |
| 529 } | |
| 530 | |
| 531 if (ctx->event && ctx->event->timer_set) { | |
| 532 ngx_del_timer(ctx->event); | |
| 533 } | |
| 534 | |
| 535 /* lock name mutex */ | |
| 536 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
537 if (ctx->nsrvs) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
538 for (i = 0; i < ctx->nsrvs; i++) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
539 if (ctx->srvs[i].ctx) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
540 ngx_resolve_name_done(ctx->srvs[i].ctx); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
541 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
542 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
543 if (ctx->srvs[i].addrs) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
544 ngx_resolver_free(r, ctx->srvs[i].addrs->sockaddr); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
545 ngx_resolver_free(r, ctx->srvs[i].addrs); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
546 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
547 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
548 ngx_resolver_free(r, ctx->srvs[i].name.data); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
549 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
550 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
551 ngx_resolver_free(r, ctx->srvs); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
552 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
553 |
|
6348
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
554 if (ctx->state == NGX_AGAIN || ctx->state == NGX_RESOLVE_TIMEDOUT) { |
| 1649 | 555 |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
556 rn = ctx->node; |
| 1649 | 557 |
| 558 if (rn) { | |
| 559 p = &rn->waiting; | |
| 560 w = rn->waiting; | |
| 561 | |
| 562 while (w) { | |
| 563 if (w == ctx) { | |
| 564 *p = w->next; | |
| 565 | |
| 566 goto done; | |
| 567 } | |
| 568 | |
| 569 p = &w->next; | |
| 570 w = w->next; | |
| 571 } | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
572 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
573 ngx_log_error(NGX_LOG_ALERT, r->log, 0, |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
574 "could not cancel %V resolving", &ctx->name); |
| 1649 | 575 } |
| 576 } | |
| 577 | |
| 578 done: | |
| 579 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
580 if (ctx->service.len) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
581 ngx_resolver_expire(r, &r->srv_rbtree, &r->srv_expire_queue); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
582 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
583 } else { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
584 ngx_resolver_expire(r, &r->name_rbtree, &r->name_expire_queue); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
585 } |
| 1649 | 586 |
| 587 /* unlock name mutex */ | |
| 588 | |
|
1904
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
589 /* lock alloc mutex */ |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
590 |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
591 if (ctx->event) { |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
592 ngx_resolver_free_locked(r, ctx->event); |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
593 } |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
594 |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
595 ngx_resolver_free_locked(r, ctx); |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
596 |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
597 /* unlock alloc mutex */ |
|
6196
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
598 |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
599 if (r->event->timer_set && ngx_resolver_resend_empty(r)) { |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
600 ngx_del_timer(r->event); |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
601 } |
| 1649 | 602 } |
| 603 | |
| 604 | |
| 605 static ngx_int_t | |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
606 ngx_resolve_name_locked(ngx_resolver_t *r, ngx_resolver_ctx_t *ctx, |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
607 ngx_str_t *name) |
| 1649 | 608 { |
| 609 uint32_t hash; | |
|
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
610 ngx_int_t rc; |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
611 ngx_str_t cname; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
612 ngx_uint_t i, naddrs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
613 ngx_queue_t *resend_queue, *expire_queue; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
614 ngx_rbtree_t *tree; |
|
6349
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
615 ngx_resolver_ctx_t *next, *last; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
616 ngx_resolver_addr_t *addrs; |
| 1649 | 617 ngx_resolver_node_t *rn; |
| 618 | |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
619 ngx_strlow(name->data, name->data, name->len); |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
620 |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
621 hash = ngx_crc32_short(name->data, name->len); |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
622 |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
623 if (ctx->service.len) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
624 rn = ngx_resolver_lookup_srv(r, name, hash); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
625 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
626 tree = &r->srv_rbtree; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
627 resend_queue = &r->srv_resend_queue; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
628 expire_queue = &r->srv_expire_queue; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
629 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
630 } else { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
631 rn = ngx_resolver_lookup_name(r, name, hash); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
632 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
633 tree = &r->name_rbtree; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
634 resend_queue = &r->name_resend_queue; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
635 expire_queue = &r->name_expire_queue; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
636 } |
| 1649 | 637 |
| 638 if (rn) { | |
| 639 | |
|
6349
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
640 /* ctx can be a list after NGX_RESOLVE_CNAME */ |
|
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
641 for (last = ctx; last->next; last = last->next); |
|
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
642 |
| 1649 | 643 if (rn->valid >= ngx_time()) { |
| 644 | |
| 645 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, "resolve cached"); | |
| 646 | |
| 647 ngx_queue_remove(&rn->queue); | |
| 648 | |
| 649 rn->expire = ngx_time() + r->expire; | |
| 650 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
651 ngx_queue_insert_head(expire_queue, &rn->queue); |
| 1649 | 652 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
653 naddrs = (rn->naddrs == (u_short) -1) ? 0 : rn->naddrs; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
654 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
655 naddrs += (rn->naddrs6 == (u_short) -1) ? 0 : rn->naddrs6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
656 #endif |
| 1649 | 657 |
| 658 if (naddrs) { | |
| 659 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
660 if (naddrs == 1 && rn->naddrs == 1) { |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
661 addrs = NULL; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
662 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
663 } else { |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
664 addrs = ngx_resolver_export(r, rn, 1); |
| 1649 | 665 if (addrs == NULL) { |
| 666 return NGX_ERROR; | |
| 667 } | |
| 668 } | |
| 669 | |
|
6349
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
670 last->next = rn->waiting; |
| 1649 | 671 rn->waiting = NULL; |
| 672 | |
| 673 /* unlock name mutex */ | |
| 674 | |
| 675 do { | |
| 676 ctx->state = NGX_OK; | |
|
6456
c94aba230a5a
Resolver: introduced valid field in resolver responses.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6372
diff
changeset
|
677 ctx->valid = rn->valid; |
| 1649 | 678 ctx->naddrs = naddrs; |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
679 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
680 if (addrs == NULL) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
681 ctx->addrs = &ctx->addr; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
682 ctx->addr.sockaddr = (struct sockaddr *) &ctx->sin; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
683 ctx->addr.socklen = sizeof(struct sockaddr_in); |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
684 ngx_memzero(&ctx->sin, sizeof(struct sockaddr_in)); |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
685 ctx->sin.sin_family = AF_INET; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
686 ctx->sin.sin_addr.s_addr = rn->u.addr; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
687 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
688 } else { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
689 ctx->addrs = addrs; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
690 } |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
691 |
| 1649 | 692 next = ctx->next; |
| 693 | |
| 694 ctx->handler(ctx); | |
| 695 | |
| 696 ctx = next; | |
| 697 } while (ctx); | |
| 698 | |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
699 if (addrs != NULL) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
700 ngx_resolver_free(r, addrs->sockaddr); |
| 1649 | 701 ngx_resolver_free(r, addrs); |
| 702 } | |
| 703 | |
| 704 return NGX_OK; | |
| 705 } | |
| 706 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
707 if (rn->nsrvs) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
708 last->next = rn->waiting; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
709 rn->waiting = NULL; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
710 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
711 /* unlock name mutex */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
712 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
713 do { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
714 next = ctx->next; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
715 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
716 ngx_resolver_resolve_srv_names(ctx, rn); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
717 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
718 ctx = next; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
719 } while (ctx); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
720 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
721 return NGX_OK; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
722 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
723 |
| 1649 | 724 /* NGX_RESOLVE_CNAME */ |
| 725 | |
| 1969 | 726 if (ctx->recursion++ < NGX_RESOLVER_MAX_RECURSION) { |
| 727 | |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
728 cname.len = rn->cnlen; |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
729 cname.data = rn->u.cname; |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
730 |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
731 return ngx_resolve_name_locked(r, ctx, &cname); |
| 1969 | 732 } |
| 733 | |
|
6349
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
734 last->next = rn->waiting; |
| 1969 | 735 rn->waiting = NULL; |
| 736 | |
| 737 /* unlock name mutex */ | |
| 738 | |
| 739 do { | |
| 740 ctx->state = NGX_RESOLVE_NXDOMAIN; | |
|
6456
c94aba230a5a
Resolver: introduced valid field in resolver responses.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6372
diff
changeset
|
741 ctx->valid = ngx_time() + (r->valid ? r->valid : 10); |
| 1969 | 742 next = ctx->next; |
| 743 | |
| 744 ctx->handler(ctx); | |
| 745 | |
| 746 ctx = next; | |
| 747 } while (ctx); | |
| 748 | |
| 749 return NGX_OK; | |
| 1649 | 750 } |
| 751 | |
| 752 if (rn->waiting) { | |
|
7051
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
753 if (ngx_resolver_set_timeout(r, ctx) != NGX_OK) { |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
754 return NGX_ERROR; |
|
6348
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
755 } |
|
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
756 |
|
6349
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
757 last->next = rn->waiting; |
| 1649 | 758 rn->waiting = ctx; |
| 3297 | 759 ctx->state = NGX_AGAIN; |
|
7040
d49b74a683b1
Resolver: added the "async" flag to resolver context.
Roman Arutyunyan <arut@nginx.com>
parents:
7039
diff
changeset
|
760 ctx->async = 1; |
| 1649 | 761 |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
762 do { |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
763 ctx->node = rn; |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
764 ctx = ctx->next; |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
765 } while (ctx); |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
766 |
| 1649 | 767 return NGX_AGAIN; |
| 768 } | |
| 769 | |
| 770 ngx_queue_remove(&rn->queue); | |
| 771 | |
| 772 /* lock alloc mutex */ | |
| 773 | |
|
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
774 if (rn->query) { |
|
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
775 ngx_resolver_free_locked(r, rn->query); |
|
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
776 rn->query = NULL; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
777 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
778 rn->query6 = NULL; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
779 #endif |
|
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
780 } |
| 1649 | 781 |
| 782 if (rn->cnlen) { | |
| 783 ngx_resolver_free_locked(r, rn->u.cname); | |
| 784 } | |
| 785 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
786 if (rn->naddrs > 1 && rn->naddrs != (u_short) -1) { |
| 1649 | 787 ngx_resolver_free_locked(r, rn->u.addrs); |
| 788 } | |
| 789 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
790 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
791 if (rn->naddrs6 > 1 && rn->naddrs6 != (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
792 ngx_resolver_free_locked(r, rn->u6.addrs6); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
793 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
794 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
795 |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
796 if (rn->nsrvs) { |
|
6860
f18c285c2e59
Win32: fixed some warnings reported by Borland C.
Maxim Dounin <mdounin@mdounin.ru>
parents:
6847
diff
changeset
|
797 for (i = 0; i < (ngx_uint_t) rn->nsrvs; i++) { |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
798 if (rn->u.srvs[i].name.data) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
799 ngx_resolver_free_locked(r, rn->u.srvs[i].name.data); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
800 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
801 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
802 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
803 ngx_resolver_free_locked(r, rn->u.srvs); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
804 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
805 |
| 1649 | 806 /* unlock alloc mutex */ |
| 807 | |
| 808 } else { | |
| 809 | |
| 810 rn = ngx_resolver_alloc(r, sizeof(ngx_resolver_node_t)); | |
| 811 if (rn == NULL) { | |
| 812 return NGX_ERROR; | |
| 813 } | |
| 814 | |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
815 rn->name = ngx_resolver_dup(r, name->data, name->len); |
| 1649 | 816 if (rn->name == NULL) { |
| 817 ngx_resolver_free(r, rn); | |
| 818 return NGX_ERROR; | |
| 819 } | |
| 820 | |
| 821 rn->node.key = hash; | |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
822 rn->nlen = (u_short) name->len; |
|
1960
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
823 rn->query = NULL; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
824 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
825 rn->query6 = NULL; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
826 #endif |
| 1649 | 827 |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
828 ngx_rbtree_insert(tree, &rn->node); |
| 1649 | 829 } |
| 830 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
831 if (ctx->service.len) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
832 rc = ngx_resolver_create_srv_query(r, rn, name); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
833 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
834 } else { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
835 rc = ngx_resolver_create_name_query(r, rn, name); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
836 } |
|
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
837 |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
838 if (rc == NGX_ERROR) { |
| 1649 | 839 goto failed; |
| 840 } | |
| 841 | |
|
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
842 if (rc == NGX_DECLINED) { |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
843 ngx_rbtree_delete(tree, &rn->node); |
|
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
844 |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
845 ngx_resolver_free(r, rn->query); |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
846 ngx_resolver_free(r, rn->name); |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
847 ngx_resolver_free(r, rn); |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
848 |
|
6349
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
849 do { |
|
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
850 ctx->state = NGX_RESOLVE_NXDOMAIN; |
|
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
851 next = ctx->next; |
|
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
852 |
|
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
853 ctx->handler(ctx); |
|
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
854 |
|
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
855 ctx = next; |
|
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
856 } while (ctx); |
|
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
857 |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
858 return NGX_OK; |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
859 } |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
860 |
|
6366
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
861 rn->last_connection = r->last_connection++; |
|
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
862 if (r->last_connection == r->connections.nelts) { |
|
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
863 r->last_connection = 0; |
|
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
864 } |
|
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
865 |
|
8055
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
866 rn->naddrs = r->ipv4 ? (u_short) -1 : 0; |
| 6367 | 867 rn->tcp = 0; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
868 #if (NGX_HAVE_INET6) |
|
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
869 rn->naddrs6 = r->ipv6 ? (u_short) -1 : 0; |
| 6367 | 870 rn->tcp6 = 0; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
871 #endif |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
872 rn->nsrvs = 0; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
873 |
| 1649 | 874 if (ngx_resolver_send_query(r, rn) != NGX_OK) { |
|
7312
54683f650cbd
Resolver: retry sending queries on errors (ticket #1511).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7299
diff
changeset
|
875 |
|
54683f650cbd
Resolver: retry sending queries on errors (ticket #1511).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7299
diff
changeset
|
876 /* immediately retry once on failure */ |
|
54683f650cbd
Resolver: retry sending queries on errors (ticket #1511).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7299
diff
changeset
|
877 |
|
54683f650cbd
Resolver: retry sending queries on errors (ticket #1511).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7299
diff
changeset
|
878 rn->last_connection++; |
|
54683f650cbd
Resolver: retry sending queries on errors (ticket #1511).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7299
diff
changeset
|
879 if (rn->last_connection == r->connections.nelts) { |
|
54683f650cbd
Resolver: retry sending queries on errors (ticket #1511).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7299
diff
changeset
|
880 rn->last_connection = 0; |
|
54683f650cbd
Resolver: retry sending queries on errors (ticket #1511).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7299
diff
changeset
|
881 } |
|
54683f650cbd
Resolver: retry sending queries on errors (ticket #1511).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7299
diff
changeset
|
882 |
|
54683f650cbd
Resolver: retry sending queries on errors (ticket #1511).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7299
diff
changeset
|
883 (void) ngx_resolver_send_query(r, rn); |
| 1649 | 884 } |
| 885 | |
|
7051
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
886 if (ngx_resolver_set_timeout(r, ctx) != NGX_OK) { |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
887 goto failed; |
| 1649 | 888 } |
| 889 | |
|
6846
c3a895b94d3f
Resolver: fixed a race between parallel name and addr resolves.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6845
diff
changeset
|
890 if (ngx_resolver_resend_empty(r)) { |
| 1649 | 891 ngx_add_timer(r->event, (ngx_msec_t) (r->resend_timeout * 1000)); |
| 892 } | |
| 893 | |
| 894 rn->expire = ngx_time() + r->resend_timeout; | |
| 895 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
896 ngx_queue_insert_head(resend_queue, &rn->queue); |
| 1649 | 897 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
898 rn->code = 0; |
| 1649 | 899 rn->cnlen = 0; |
| 900 rn->valid = 0; | |
|
5485
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
901 rn->ttl = NGX_MAX_UINT32_VALUE; |
| 1649 | 902 rn->waiting = ctx; |
| 903 | |
| 904 ctx->state = NGX_AGAIN; | |
|
7040
d49b74a683b1
Resolver: added the "async" flag to resolver context.
Roman Arutyunyan <arut@nginx.com>
parents:
7039
diff
changeset
|
905 ctx->async = 1; |
| 1649 | 906 |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
907 do { |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
908 ctx->node = rn; |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
909 ctx = ctx->next; |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
910 } while (ctx); |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
911 |
| 1649 | 912 return NGX_AGAIN; |
| 913 | |
| 914 failed: | |
| 915 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
916 ngx_rbtree_delete(tree, &rn->node); |
| 1649 | 917 |
|
1960
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
918 if (rn->query) { |
|
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
919 ngx_resolver_free(r, rn->query); |
|
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
920 } |
|
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
921 |
| 1649 | 922 ngx_resolver_free(r, rn->name); |
| 923 | |
| 924 ngx_resolver_free(r, rn); | |
| 925 | |
| 926 return NGX_ERROR; | |
| 927 } | |
| 583 | 928 |
| 929 | |
| 930 ngx_int_t | |
| 1649 | 931 ngx_resolve_addr(ngx_resolver_ctx_t *ctx) |
| 932 { | |
|
2484
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
933 u_char *name; |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
934 in_addr_t addr; |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
935 ngx_queue_t *resend_queue, *expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
936 ngx_rbtree_t *tree; |
| 1649 | 937 ngx_resolver_t *r; |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
938 struct sockaddr_in *sin; |
| 1649 | 939 ngx_resolver_node_t *rn; |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
940 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
941 uint32_t hash; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
942 struct sockaddr_in6 *sin6; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
943 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
944 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
945 #if (NGX_SUPPRESS_WARN) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
946 addr = 0; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
947 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
948 hash = 0; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
949 sin6 = NULL; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
950 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
951 #endif |
| 1649 | 952 |
| 953 r = ctx->resolver; | |
| 954 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
955 switch (ctx->addr.sockaddr->sa_family) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
956 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
957 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
958 case AF_INET6: |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
959 sin6 = (struct sockaddr_in6 *) ctx->addr.sockaddr; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
960 hash = ngx_crc32_short(sin6->sin6_addr.s6_addr, 16); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
961 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
962 /* lock addr mutex */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
963 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
964 rn = ngx_resolver_lookup_addr6(r, &sin6->sin6_addr, hash); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
965 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
966 tree = &r->addr6_rbtree; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
967 resend_queue = &r->addr6_resend_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
968 expire_queue = &r->addr6_expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
969 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
970 break; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
971 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
972 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
973 default: /* AF_INET */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
974 sin = (struct sockaddr_in *) ctx->addr.sockaddr; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
975 addr = ntohl(sin->sin_addr.s_addr); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
976 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
977 /* lock addr mutex */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
978 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
979 rn = ngx_resolver_lookup_addr(r, addr); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
980 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
981 tree = &r->addr_rbtree; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
982 resend_queue = &r->addr_resend_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
983 expire_queue = &r->addr_expire_queue; |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
984 } |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
985 |
| 1649 | 986 if (rn) { |
| 987 | |
| 988 if (rn->valid >= ngx_time()) { | |
| 989 | |
| 990 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, "resolve cached"); | |
| 991 | |
| 992 ngx_queue_remove(&rn->queue); | |
| 993 | |
| 994 rn->expire = ngx_time() + r->expire; | |
| 995 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
996 ngx_queue_insert_head(expire_queue, &rn->queue); |
| 1649 | 997 |
|
2484
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
998 name = ngx_resolver_dup(r, rn->name, rn->nlen); |
|
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
999 if (name == NULL) { |
|
7566
571383f75a9a
Resolver: fixed possible use-after-free while resolving PTR.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7428
diff
changeset
|
1000 ngx_resolver_free(r, ctx); |
|
571383f75a9a
Resolver: fixed possible use-after-free while resolving PTR.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7428
diff
changeset
|
1001 return NGX_ERROR; |
| 1649 | 1002 } |
| 1003 | |
|
2484
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
1004 ctx->name.len = rn->nlen; |
|
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
1005 ctx->name.data = name; |
|
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
1006 |
| 1649 | 1007 /* unlock addr mutex */ |
| 1008 | |
| 1009 ctx->state = NGX_OK; | |
|
6456
c94aba230a5a
Resolver: introduced valid field in resolver responses.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6372
diff
changeset
|
1010 ctx->valid = rn->valid; |
| 1649 | 1011 |
| 1012 ctx->handler(ctx); | |
| 1013 | |
|
2484
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
1014 ngx_resolver_free(r, name); |
| 1649 | 1015 |
| 1016 return NGX_OK; | |
| 1017 } | |
| 1018 | |
| 1019 if (rn->waiting) { | |
|
7051
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
1020 if (ngx_resolver_set_timeout(r, ctx) != NGX_OK) { |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
1021 return NGX_ERROR; |
|
6348
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
1022 } |
|
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
1023 |
| 1649 | 1024 ctx->next = rn->waiting; |
| 1025 rn->waiting = ctx; | |
| 3297 | 1026 ctx->state = NGX_AGAIN; |
|
7040
d49b74a683b1
Resolver: added the "async" flag to resolver context.
Roman Arutyunyan <arut@nginx.com>
parents:
7039
diff
changeset
|
1027 ctx->async = 1; |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
1028 ctx->node = rn; |
| 1649 | 1029 |
|
2487
9b4dce95c744
fix return code, this fixes segfault when two or more
Igor Sysoev <igor@sysoev.ru>
parents:
2486
diff
changeset
|
1030 /* unlock addr mutex */ |
|
9b4dce95c744
fix return code, this fixes segfault when two or more
Igor Sysoev <igor@sysoev.ru>
parents:
2486
diff
changeset
|
1031 |
|
9b4dce95c744
fix return code, this fixes segfault when two or more
Igor Sysoev <igor@sysoev.ru>
parents:
2486
diff
changeset
|
1032 return NGX_OK; |
| 1649 | 1033 } |
| 1034 | |
| 1035 ngx_queue_remove(&rn->queue); | |
| 1036 | |
| 1037 ngx_resolver_free(r, rn->query); | |
|
1960
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
1038 rn->query = NULL; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1039 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1040 rn->query6 = NULL; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1041 #endif |
| 1649 | 1042 |
| 1043 } else { | |
| 1044 rn = ngx_resolver_alloc(r, sizeof(ngx_resolver_node_t)); | |
| 1045 if (rn == NULL) { | |
| 1046 goto failed; | |
| 1047 } | |
| 1048 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1049 switch (ctx->addr.sockaddr->sa_family) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1050 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1051 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1052 case AF_INET6: |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1053 rn->addr6 = sin6->sin6_addr; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1054 rn->node.key = hash; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1055 break; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1056 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1057 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1058 default: /* AF_INET */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1059 rn->node.key = addr; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1060 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1061 |
|
1960
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
1062 rn->query = NULL; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1063 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1064 rn->query6 = NULL; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1065 #endif |
| 1649 | 1066 |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1067 ngx_rbtree_insert(tree, &rn->node); |
| 1649 | 1068 } |
| 1069 | |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
1070 if (ngx_resolver_create_addr_query(r, rn, &ctx->addr) != NGX_OK) { |
| 1649 | 1071 goto failed; |
| 1072 } | |
| 1073 | |
|
6366
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1074 rn->last_connection = r->last_connection++; |
|
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1075 if (r->last_connection == r->connections.nelts) { |
|
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1076 r->last_connection = 0; |
|
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1077 } |
|
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1078 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1079 rn->naddrs = (u_short) -1; |
| 6367 | 1080 rn->tcp = 0; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1081 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1082 rn->naddrs6 = (u_short) -1; |
| 6367 | 1083 rn->tcp6 = 0; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1084 #endif |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1085 rn->nsrvs = 0; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1086 |
| 1649 | 1087 if (ngx_resolver_send_query(r, rn) != NGX_OK) { |
|
7312
54683f650cbd
Resolver: retry sending queries on errors (ticket #1511).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7299
diff
changeset
|
1088 |
|
54683f650cbd
Resolver: retry sending queries on errors (ticket #1511).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7299
diff
changeset
|
1089 /* immediately retry once on failure */ |
|
54683f650cbd
Resolver: retry sending queries on errors (ticket #1511).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7299
diff
changeset
|
1090 |
|
54683f650cbd
Resolver: retry sending queries on errors (ticket #1511).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7299
diff
changeset
|
1091 rn->last_connection++; |
|
54683f650cbd
Resolver: retry sending queries on errors (ticket #1511).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7299
diff
changeset
|
1092 if (rn->last_connection == r->connections.nelts) { |
|
54683f650cbd
Resolver: retry sending queries on errors (ticket #1511).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7299
diff
changeset
|
1093 rn->last_connection = 0; |
|
54683f650cbd
Resolver: retry sending queries on errors (ticket #1511).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7299
diff
changeset
|
1094 } |
|
54683f650cbd
Resolver: retry sending queries on errors (ticket #1511).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7299
diff
changeset
|
1095 |
|
54683f650cbd
Resolver: retry sending queries on errors (ticket #1511).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7299
diff
changeset
|
1096 (void) ngx_resolver_send_query(r, rn); |
| 1649 | 1097 } |
| 1098 | |
|
7051
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
1099 if (ngx_resolver_set_timeout(r, ctx) != NGX_OK) { |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
1100 goto failed; |
| 1649 | 1101 } |
| 1102 | |
|
6846
c3a895b94d3f
Resolver: fixed a race between parallel name and addr resolves.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6845
diff
changeset
|
1103 if (ngx_resolver_resend_empty(r)) { |
| 1649 | 1104 ngx_add_timer(r->event, (ngx_msec_t) (r->resend_timeout * 1000)); |
| 1105 } | |
| 1106 | |
| 1107 rn->expire = ngx_time() + r->resend_timeout; | |
| 1108 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1109 ngx_queue_insert_head(resend_queue, &rn->queue); |
| 1649 | 1110 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1111 rn->code = 0; |
| 1649 | 1112 rn->cnlen = 0; |
| 1113 rn->name = NULL; | |
| 1114 rn->nlen = 0; | |
| 1115 rn->valid = 0; | |
|
5485
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
1116 rn->ttl = NGX_MAX_UINT32_VALUE; |
| 1649 | 1117 rn->waiting = ctx; |
| 1118 | |
| 1119 /* unlock addr mutex */ | |
| 1120 | |
| 1121 ctx->state = NGX_AGAIN; | |
|
7040
d49b74a683b1
Resolver: added the "async" flag to resolver context.
Roman Arutyunyan <arut@nginx.com>
parents:
7039
diff
changeset
|
1122 ctx->async = 1; |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
1123 ctx->node = rn; |
| 1649 | 1124 |
| 1125 return NGX_OK; | |
| 1126 | |
| 1127 failed: | |
| 1128 | |
| 1129 if (rn) { | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1130 ngx_rbtree_delete(tree, &rn->node); |
| 1649 | 1131 |
|
1960
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
1132 if (rn->query) { |
|
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
1133 ngx_resolver_free(r, rn->query); |
|
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
1134 } |
|
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
1135 |
| 1649 | 1136 ngx_resolver_free(r, rn); |
| 1137 } | |
| 1138 | |
| 1139 /* unlock addr mutex */ | |
| 1140 | |
| 1141 if (ctx->event) { | |
|
1904
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1142 ngx_resolver_free(r, ctx->event); |
| 1649 | 1143 } |
| 1144 | |
|
1904
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1145 ngx_resolver_free(r, ctx); |
| 1649 | 1146 |
| 1147 return NGX_ERROR; | |
| 1148 } | |
| 1149 | |
| 1150 | |
| 1151 void | |
| 1152 ngx_resolve_addr_done(ngx_resolver_ctx_t *ctx) | |
| 1153 { | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1154 ngx_queue_t *expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1155 ngx_rbtree_t *tree; |
| 1649 | 1156 ngx_resolver_t *r; |
| 1157 ngx_resolver_ctx_t *w, **p; | |
| 1158 ngx_resolver_node_t *rn; | |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1159 |
| 1649 | 1160 r = ctx->resolver; |
| 1161 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1162 switch (ctx->addr.sockaddr->sa_family) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1163 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1164 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1165 case AF_INET6: |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1166 tree = &r->addr6_rbtree; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1167 expire_queue = &r->addr6_expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1168 break; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1169 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1170 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1171 default: /* AF_INET */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1172 tree = &r->addr_rbtree; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1173 expire_queue = &r->addr_expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1174 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1175 |
| 1649 | 1176 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, |
| 1177 "resolve addr done: %i", ctx->state); | |
| 1178 | |
| 1179 if (ctx->event && ctx->event->timer_set) { | |
| 1180 ngx_del_timer(ctx->event); | |
| 1181 } | |
| 1182 | |
| 1183 /* lock addr mutex */ | |
| 1184 | |
|
6348
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
1185 if (ctx->state == NGX_AGAIN || ctx->state == NGX_RESOLVE_TIMEDOUT) { |
| 1649 | 1186 |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
1187 rn = ctx->node; |
| 1649 | 1188 |
| 1189 if (rn) { | |
| 1190 p = &rn->waiting; | |
| 1191 w = rn->waiting; | |
| 1192 | |
| 1193 while (w) { | |
| 1194 if (w == ctx) { | |
| 1195 *p = w->next; | |
| 1196 | |
| 1197 goto done; | |
| 1198 } | |
| 1199 | |
| 1200 p = &w->next; | |
| 1201 w = w->next; | |
| 1202 } | |
| 1203 } | |
| 1204 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1205 { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1206 u_char text[NGX_SOCKADDR_STRLEN]; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1207 ngx_str_t addrtext; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1208 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1209 addrtext.data = text; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1210 addrtext.len = ngx_sock_ntop(ctx->addr.sockaddr, ctx->addr.socklen, |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1211 text, NGX_SOCKADDR_STRLEN, 0); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1212 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1213 ngx_log_error(NGX_LOG_ALERT, r->log, 0, |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1214 "could not cancel %V resolving", &addrtext); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1215 } |
| 1649 | 1216 } |
| 1217 | |
| 1218 done: | |
| 1219 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1220 ngx_resolver_expire(r, tree, expire_queue); |
| 1649 | 1221 |
| 1222 /* unlock addr mutex */ | |
| 1223 | |
|
1904
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1224 /* lock alloc mutex */ |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1225 |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1226 if (ctx->event) { |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1227 ngx_resolver_free_locked(r, ctx->event); |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1228 } |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1229 |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1230 ngx_resolver_free_locked(r, ctx); |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1231 |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1232 /* unlock alloc mutex */ |
|
6196
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1233 |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1234 if (r->event->timer_set && ngx_resolver_resend_empty(r)) { |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1235 ngx_del_timer(r->event); |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1236 } |
| 1649 | 1237 } |
| 1238 | |
| 1239 | |
| 1240 static void | |
| 1241 ngx_resolver_expire(ngx_resolver_t *r, ngx_rbtree_t *tree, ngx_queue_t *queue) | |
| 1242 { | |
| 1243 time_t now; | |
| 1244 ngx_uint_t i; | |
| 1245 ngx_queue_t *q; | |
| 1246 ngx_resolver_node_t *rn; | |
| 1247 | |
| 1248 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver expire"); | |
| 1249 | |
| 1250 now = ngx_time(); | |
| 1251 | |
| 1252 for (i = 0; i < 2; i++) { | |
| 1253 if (ngx_queue_empty(queue)) { | |
| 1254 return; | |
| 1255 } | |
| 1256 | |
| 1257 q = ngx_queue_last(queue); | |
| 1258 | |
| 1259 rn = ngx_queue_data(q, ngx_resolver_node_t, queue); | |
| 1260 | |
| 1261 if (now <= rn->expire) { | |
| 1262 return; | |
| 1263 } | |
| 1264 | |
| 1774 | 1265 ngx_log_debug2(NGX_LOG_DEBUG_CORE, r->log, 0, |
| 1266 "resolver expire \"%*s\"", (size_t) rn->nlen, rn->name); | |
| 1649 | 1267 |
| 1268 ngx_queue_remove(q); | |
| 1269 | |
| 1270 ngx_rbtree_delete(tree, &rn->node); | |
| 1271 | |
| 1272 ngx_resolver_free_node(r, rn); | |
| 1273 } | |
| 1274 } | |
| 1275 | |
| 1276 | |
| 1277 static ngx_int_t | |
| 1278 ngx_resolver_send_query(ngx_resolver_t *r, ngx_resolver_node_t *rn) | |
| 1279 { | |
| 6367 | 1280 ngx_int_t rc; |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
1281 ngx_resolver_connection_t *rec; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
1282 |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
1283 rec = r->connections.elts; |
|
6366
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1284 rec = &rec[rn->last_connection]; |
| 1649 | 1285 |
| 6367 | 1286 if (rec->log.handler == NULL) { |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
1287 rec->log = *r->log; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
1288 rec->log.handler = ngx_resolver_log_error; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
1289 rec->log.data = rec; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
1290 rec->log.action = "resolving"; |
| 1649 | 1291 } |
| 1292 | |
|
8055
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
1293 if (rn->query && rn->naddrs == (u_short) -1) { |
| 6367 | 1294 rc = rn->tcp ? ngx_resolver_send_tcp_query(r, rec, rn->query, rn->qlen) |
| 1295 : ngx_resolver_send_udp_query(r, rec, rn->query, rn->qlen); | |
| 1296 | |
| 1297 if (rc != NGX_OK) { | |
| 1298 return rc; | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1299 } |
| 1649 | 1300 } |
| 1301 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1302 #if (NGX_HAVE_INET6) |
| 6367 | 1303 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1304 if (rn->query6 && rn->naddrs6 == (u_short) -1) { |
| 6367 | 1305 rc = rn->tcp6 |
| 1306 ? ngx_resolver_send_tcp_query(r, rec, rn->query6, rn->qlen) | |
| 1307 : ngx_resolver_send_udp_query(r, rec, rn->query6, rn->qlen); | |
| 1308 | |
| 1309 if (rc != NGX_OK) { | |
| 1310 return rc; | |
| 1311 } | |
| 1312 } | |
| 1313 | |
| 1314 #endif | |
| 1315 | |
| 1316 return NGX_OK; | |
| 1317 } | |
| 1318 | |
| 1319 | |
| 1320 static ngx_int_t | |
| 1321 ngx_resolver_send_udp_query(ngx_resolver_t *r, ngx_resolver_connection_t *rec, | |
| 1322 u_char *query, u_short qlen) | |
| 1323 { | |
| 1324 ssize_t n; | |
| 1325 | |
| 1326 if (rec->udp == NULL) { | |
| 1327 if (ngx_udp_connect(rec) != NGX_OK) { | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1328 return NGX_ERROR; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1329 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1330 |
| 6367 | 1331 rec->udp->data = rec; |
| 1332 rec->udp->read->handler = ngx_resolver_udp_read; | |
| 1333 rec->udp->read->resolver = 1; | |
| 1334 } | |
| 1335 | |
| 1336 n = ngx_send(rec->udp, query, qlen); | |
| 1337 | |
| 7275 | 1338 if (n == NGX_ERROR) { |
|
7276
a90f7812de35
Resolver: close UDP socket on error or incomplete send.
Ruslan Ermilov <ru@nginx.com>
parents:
7275
diff
changeset
|
1339 goto failed; |
| 6367 | 1340 } |
| 1341 | |
| 1342 if ((size_t) n != (size_t) qlen) { | |
| 1343 ngx_log_error(NGX_LOG_CRIT, &rec->log, 0, "send() incomplete"); | |
|
7276
a90f7812de35
Resolver: close UDP socket on error or incomplete send.
Ruslan Ermilov <ru@nginx.com>
parents:
7275
diff
changeset
|
1344 goto failed; |
| 6367 | 1345 } |
| 1346 | |
| 1347 return NGX_OK; | |
|
7276
a90f7812de35
Resolver: close UDP socket on error or incomplete send.
Ruslan Ermilov <ru@nginx.com>
parents:
7275
diff
changeset
|
1348 |
|
a90f7812de35
Resolver: close UDP socket on error or incomplete send.
Ruslan Ermilov <ru@nginx.com>
parents:
7275
diff
changeset
|
1349 failed: |
|
a90f7812de35
Resolver: close UDP socket on error or incomplete send.
Ruslan Ermilov <ru@nginx.com>
parents:
7275
diff
changeset
|
1350 |
|
a90f7812de35
Resolver: close UDP socket on error or incomplete send.
Ruslan Ermilov <ru@nginx.com>
parents:
7275
diff
changeset
|
1351 ngx_close_connection(rec->udp); |
|
a90f7812de35
Resolver: close UDP socket on error or incomplete send.
Ruslan Ermilov <ru@nginx.com>
parents:
7275
diff
changeset
|
1352 rec->udp = NULL; |
|
a90f7812de35
Resolver: close UDP socket on error or incomplete send.
Ruslan Ermilov <ru@nginx.com>
parents:
7275
diff
changeset
|
1353 |
|
a90f7812de35
Resolver: close UDP socket on error or incomplete send.
Ruslan Ermilov <ru@nginx.com>
parents:
7275
diff
changeset
|
1354 return NGX_ERROR; |
| 6367 | 1355 } |
| 1356 | |
| 1357 | |
| 1358 static ngx_int_t | |
| 1359 ngx_resolver_send_tcp_query(ngx_resolver_t *r, ngx_resolver_connection_t *rec, | |
| 1360 u_char *query, u_short qlen) | |
| 1361 { | |
| 1362 ngx_buf_t *b; | |
| 1363 ngx_int_t rc; | |
| 1364 | |
| 1365 rc = NGX_OK; | |
| 1366 | |
| 1367 if (rec->tcp == NULL) { | |
| 1368 b = rec->read_buf; | |
| 1369 | |
| 1370 if (b == NULL) { | |
| 1371 b = ngx_resolver_calloc(r, sizeof(ngx_buf_t)); | |
| 1372 if (b == NULL) { | |
| 1373 return NGX_ERROR; | |
| 1374 } | |
| 1375 | |
| 1376 b->start = ngx_resolver_alloc(r, NGX_RESOLVER_TCP_RSIZE); | |
| 1377 if (b->start == NULL) { | |
|
6368
d73f77bb5caf
Resolver: fixed possible resource leak introduced in 5a16d40c63de.
Ruslan Ermilov <ru@nginx.com>
parents:
6367
diff
changeset
|
1378 ngx_resolver_free(r, b); |
| 6367 | 1379 return NGX_ERROR; |
| 1380 } | |
| 1381 | |
| 1382 b->end = b->start + NGX_RESOLVER_TCP_RSIZE; | |
| 1383 | |
| 1384 rec->read_buf = b; | |
| 1385 } | |
| 1386 | |
| 1387 b->pos = b->start; | |
| 1388 b->last = b->start; | |
| 1389 | |
| 1390 b = rec->write_buf; | |
| 1391 | |
| 1392 if (b == NULL) { | |
| 1393 b = ngx_resolver_calloc(r, sizeof(ngx_buf_t)); | |
| 1394 if (b == NULL) { | |
| 1395 return NGX_ERROR; | |
| 1396 } | |
| 1397 | |
| 1398 b->start = ngx_resolver_alloc(r, NGX_RESOLVER_TCP_WSIZE); | |
| 1399 if (b->start == NULL) { | |
|
6368
d73f77bb5caf
Resolver: fixed possible resource leak introduced in 5a16d40c63de.
Ruslan Ermilov <ru@nginx.com>
parents:
6367
diff
changeset
|
1400 ngx_resolver_free(r, b); |
| 6367 | 1401 return NGX_ERROR; |
| 1402 } | |
| 1403 | |
| 1404 b->end = b->start + NGX_RESOLVER_TCP_WSIZE; | |
| 1405 | |
| 1406 rec->write_buf = b; | |
| 1407 } | |
| 1408 | |
| 1409 b->pos = b->start; | |
| 1410 b->last = b->start; | |
| 1411 | |
| 1412 rc = ngx_tcp_connect(rec); | |
| 1413 if (rc == NGX_ERROR) { | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1414 return NGX_ERROR; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1415 } |
| 6367 | 1416 |
| 1417 rec->tcp->data = rec; | |
| 1418 rec->tcp->write->handler = ngx_resolver_tcp_write; | |
|
8045
aa28c802409f
Resolver: make TCP write timer event cancelable.
Aleksei Bavshin <a.bavshin@f5.com>
parents:
7875
diff
changeset
|
1419 rec->tcp->write->cancelable = 1; |
| 6367 | 1420 rec->tcp->read->handler = ngx_resolver_tcp_read; |
| 1421 rec->tcp->read->resolver = 1; | |
| 1422 | |
| 1423 ngx_add_timer(rec->tcp->write, (ngx_msec_t) (r->tcp_timeout * 1000)); | |
| 1649 | 1424 } |
| 6367 | 1425 |
| 1426 b = rec->write_buf; | |
| 1427 | |
| 1428 if (b->end - b->last < 2 + qlen) { | |
| 1429 ngx_log_error(NGX_LOG_CRIT, &rec->log, 0, "buffer overflow"); | |
| 1430 return NGX_ERROR; | |
| 1431 } | |
| 1432 | |
| 1433 *b->last++ = (u_char) (qlen >> 8); | |
| 1434 *b->last++ = (u_char) qlen; | |
| 1435 b->last = ngx_cpymem(b->last, query, qlen); | |
| 1436 | |
| 1437 if (rc == NGX_OK) { | |
| 1438 ngx_resolver_tcp_write(rec->tcp->write); | |
| 1439 } | |
| 1649 | 1440 |
| 1441 return NGX_OK; | |
| 1442 } | |
| 1443 | |
| 1444 | |
| 1445 static void | |
| 1446 ngx_resolver_resend_handler(ngx_event_t *ev) | |
| 1447 { | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1448 time_t timer, atimer, stimer, ntimer; |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1449 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1450 time_t a6timer; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1451 #endif |
| 1649 | 1452 ngx_resolver_t *r; |
| 1453 | |
| 1454 r = ev->data; | |
| 1455 | |
| 1456 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, | |
| 1457 "resolver resend handler"); | |
| 1458 | |
| 1459 /* lock name mutex */ | |
| 1460 | |
| 1461 ntimer = ngx_resolver_resend(r, &r->name_rbtree, &r->name_resend_queue); | |
| 1462 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1463 stimer = ngx_resolver_resend(r, &r->srv_rbtree, &r->srv_resend_queue); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1464 |
| 1649 | 1465 /* unlock name mutex */ |
| 1466 | |
| 1467 /* lock addr mutex */ | |
| 1468 | |
| 1469 atimer = ngx_resolver_resend(r, &r->addr_rbtree, &r->addr_resend_queue); | |
|
1679
ca317d9b5c09
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
1649
diff
changeset
|
1470 |
| 1649 | 1471 /* unlock addr mutex */ |
| 1472 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1473 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1474 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1475 /* lock addr6 mutex */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1476 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1477 a6timer = ngx_resolver_resend(r, &r->addr6_rbtree, &r->addr6_resend_queue); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1478 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1479 /* unlock addr6 mutex */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1480 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1481 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1482 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1483 timer = ntimer; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1484 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1485 if (timer == 0) { |
| 1649 | 1486 timer = atimer; |
| 1487 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1488 } else if (atimer) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1489 timer = ngx_min(timer, atimer); |
| 1649 | 1490 } |
| 1491 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1492 if (timer == 0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1493 timer = stimer; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1494 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1495 } else if (stimer) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1496 timer = ngx_min(timer, stimer); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1497 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1498 |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1499 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1500 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1501 if (timer == 0) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1502 timer = a6timer; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1503 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1504 } else if (a6timer) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1505 timer = ngx_min(timer, a6timer); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1506 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1507 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1508 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1509 |
| 1649 | 1510 if (timer) { |
| 1511 ngx_add_timer(r->event, (ngx_msec_t) (timer * 1000)); | |
| 1512 } | |
| 1513 } | |
| 1514 | |
| 1515 | |
| 1516 static time_t | |
| 1517 ngx_resolver_resend(ngx_resolver_t *r, ngx_rbtree_t *tree, ngx_queue_t *queue) | |
| 1518 { | |
| 1519 time_t now; | |
| 1520 ngx_queue_t *q; | |
| 1521 ngx_resolver_node_t *rn; | |
| 1522 | |
| 1523 now = ngx_time(); | |
| 1524 | |
| 1525 for ( ;; ) { | |
| 1526 if (ngx_queue_empty(queue)) { | |
| 1527 return 0; | |
| 1528 } | |
| 1529 | |
| 1530 q = ngx_queue_last(queue); | |
| 1531 | |
| 1532 rn = ngx_queue_data(q, ngx_resolver_node_t, queue); | |
| 1533 | |
| 1534 if (now < rn->expire) { | |
| 1535 return rn->expire - now; | |
| 1536 } | |
| 1537 | |
| 1774 | 1538 ngx_log_debug3(NGX_LOG_DEBUG_CORE, r->log, 0, |
| 1539 "resolver resend \"%*s\" %p", | |
| 1540 (size_t) rn->nlen, rn->name, rn->waiting); | |
| 1649 | 1541 |
| 1542 ngx_queue_remove(q); | |
| 1543 | |
| 1544 if (rn->waiting) { | |
| 1545 | |
|
6366
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1546 if (++rn->last_connection == r->connections.nelts) { |
|
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1547 rn->last_connection = 0; |
|
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1548 } |
|
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1549 |
|
4683
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1550 (void) ngx_resolver_send_query(r, rn); |
|
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1551 |
|
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1552 rn->expire = now + r->resend_timeout; |
|
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1553 |
|
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1554 ngx_queue_insert_head(queue, q); |
|
1879
cf4ee321d195
do not delete failed DNS request if there are waiting clients
Igor Sysoev <igor@sysoev.ru>
parents:
1878
diff
changeset
|
1555 |
|
cf4ee321d195
do not delete failed DNS request if there are waiting clients
Igor Sysoev <igor@sysoev.ru>
parents:
1878
diff
changeset
|
1556 continue; |
| 1649 | 1557 } |
| 1558 | |
| 1559 ngx_rbtree_delete(tree, &rn->node); | |
| 1560 | |
| 1561 ngx_resolver_free_node(r, rn); | |
| 1562 } | |
| 1563 } | |
| 1564 | |
| 1565 | |
|
6196
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1566 static ngx_uint_t |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1567 ngx_resolver_resend_empty(ngx_resolver_t *r) |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1568 { |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1569 return ngx_queue_empty(&r->name_resend_queue) |
|
6845
9abba5b70ea0
Resolver: fixed possible premature stop of the resend timer.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6844
diff
changeset
|
1570 && ngx_queue_empty(&r->srv_resend_queue) |
|
6196
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1571 #if (NGX_HAVE_INET6) |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1572 && ngx_queue_empty(&r->addr6_resend_queue) |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1573 #endif |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1574 && ngx_queue_empty(&r->addr_resend_queue); |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1575 } |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1576 |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1577 |
| 1649 | 1578 static void |
| 6367 | 1579 ngx_resolver_udp_read(ngx_event_t *rev) |
| 1649 | 1580 { |
| 6367 | 1581 ssize_t n; |
| 1582 ngx_connection_t *c; | |
| 1583 ngx_resolver_connection_t *rec; | |
| 1584 u_char buf[NGX_RESOLVER_UDP_SIZE]; | |
| 1649 | 1585 |
| 1586 c = rev->data; | |
| 6367 | 1587 rec = c->data; |
| 1649 | 1588 |
| 1589 do { | |
| 1689 | 1590 n = ngx_udp_recv(c, buf, NGX_RESOLVER_UDP_SIZE); |
| 1591 | |
|
7808
eb54227110f0
Resolver: added missing event handling after reading.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7718
diff
changeset
|
1592 if (n == NGX_AGAIN) { |
|
eb54227110f0
Resolver: added missing event handling after reading.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7718
diff
changeset
|
1593 break; |
|
eb54227110f0
Resolver: added missing event handling after reading.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7718
diff
changeset
|
1594 } |
|
eb54227110f0
Resolver: added missing event handling after reading.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7718
diff
changeset
|
1595 |
|
eb54227110f0
Resolver: added missing event handling after reading.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7718
diff
changeset
|
1596 if (n == NGX_ERROR) { |
|
eb54227110f0
Resolver: added missing event handling after reading.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7718
diff
changeset
|
1597 goto failed; |
| 1649 | 1598 } |
| 1599 | |
| 6367 | 1600 ngx_resolver_process_response(rec->resolver, buf, n, 0); |
| 1649 | 1601 |
| 1602 } while (rev->ready); | |
|
7808
eb54227110f0
Resolver: added missing event handling after reading.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7718
diff
changeset
|
1603 |
|
eb54227110f0
Resolver: added missing event handling after reading.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7718
diff
changeset
|
1604 if (ngx_handle_read_event(rev, 0) != NGX_OK) { |
|
eb54227110f0
Resolver: added missing event handling after reading.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7718
diff
changeset
|
1605 goto failed; |
|
eb54227110f0
Resolver: added missing event handling after reading.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7718
diff
changeset
|
1606 } |
|
eb54227110f0
Resolver: added missing event handling after reading.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7718
diff
changeset
|
1607 |
|
eb54227110f0
Resolver: added missing event handling after reading.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7718
diff
changeset
|
1608 return; |
|
eb54227110f0
Resolver: added missing event handling after reading.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7718
diff
changeset
|
1609 |
|
eb54227110f0
Resolver: added missing event handling after reading.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7718
diff
changeset
|
1610 failed: |
|
eb54227110f0
Resolver: added missing event handling after reading.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7718
diff
changeset
|
1611 |
|
eb54227110f0
Resolver: added missing event handling after reading.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7718
diff
changeset
|
1612 ngx_close_connection(rec->udp); |
|
eb54227110f0
Resolver: added missing event handling after reading.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7718
diff
changeset
|
1613 rec->udp = NULL; |
| 1649 | 1614 } |
| 1615 | |
| 1616 | |
| 1617 static void | |
| 6367 | 1618 ngx_resolver_tcp_write(ngx_event_t *wev) |
| 1619 { | |
| 1620 off_t sent; | |
| 1621 ssize_t n; | |
| 1622 ngx_buf_t *b; | |
| 1623 ngx_resolver_t *r; | |
| 1624 ngx_connection_t *c; | |
| 1625 ngx_resolver_connection_t *rec; | |
| 1626 | |
| 1627 c = wev->data; | |
| 1628 rec = c->data; | |
| 1629 b = rec->write_buf; | |
| 1630 r = rec->resolver; | |
| 1631 | |
| 1632 if (wev->timedout) { | |
| 1633 goto failed; | |
| 1634 } | |
| 1635 | |
| 1636 sent = c->sent; | |
| 1637 | |
| 1638 while (wev->ready && b->pos < b->last) { | |
| 1639 n = ngx_send(c, b->pos, b->last - b->pos); | |
| 1640 | |
| 1641 if (n == NGX_AGAIN) { | |
| 1642 break; | |
| 1643 } | |
| 1644 | |
| 1645 if (n == NGX_ERROR) { | |
| 1646 goto failed; | |
| 1647 } | |
| 1648 | |
| 1649 b->pos += n; | |
| 1650 } | |
| 1651 | |
| 1652 if (b->pos != b->start) { | |
| 1653 b->last = ngx_movemem(b->start, b->pos, b->last - b->pos); | |
| 1654 b->pos = b->start; | |
| 1655 } | |
| 1656 | |
| 1657 if (c->sent != sent) { | |
| 1658 ngx_add_timer(wev, (ngx_msec_t) (r->tcp_timeout * 1000)); | |
| 1659 } | |
| 1660 | |
| 1661 if (ngx_handle_write_event(wev, 0) != NGX_OK) { | |
| 1662 goto failed; | |
| 1663 } | |
| 1664 | |
| 1665 return; | |
| 1666 | |
| 1667 failed: | |
| 1668 | |
| 1669 ngx_close_connection(c); | |
| 1670 rec->tcp = NULL; | |
| 1671 } | |
| 1672 | |
| 1673 | |
| 1674 static void | |
| 1675 ngx_resolver_tcp_read(ngx_event_t *rev) | |
| 1676 { | |
| 1677 u_char *p; | |
| 1678 size_t size; | |
| 1679 ssize_t n; | |
| 1680 u_short qlen; | |
| 1681 ngx_buf_t *b; | |
| 1682 ngx_resolver_t *r; | |
| 1683 ngx_connection_t *c; | |
| 1684 ngx_resolver_connection_t *rec; | |
| 1685 | |
| 1686 c = rev->data; | |
| 1687 rec = c->data; | |
| 1688 b = rec->read_buf; | |
| 1689 r = rec->resolver; | |
| 1690 | |
| 1691 while (rev->ready) { | |
| 1692 n = ngx_recv(c, b->last, b->end - b->last); | |
| 1693 | |
| 1694 if (n == NGX_AGAIN) { | |
| 1695 break; | |
| 1696 } | |
| 1697 | |
| 1698 if (n == NGX_ERROR || n == 0) { | |
| 1699 goto failed; | |
| 1700 } | |
| 1701 | |
| 1702 b->last += n; | |
| 1703 | |
| 1704 for ( ;; ) { | |
| 1705 p = b->pos; | |
| 1706 size = b->last - p; | |
| 1707 | |
| 1708 if (size < 2) { | |
| 1709 break; | |
| 1710 } | |
| 1711 | |
| 1712 qlen = (u_short) *p++ << 8; | |
| 1713 qlen += *p++; | |
| 1714 | |
| 1715 if (size < (size_t) (2 + qlen)) { | |
| 1716 break; | |
| 1717 } | |
| 1718 | |
| 1719 ngx_resolver_process_response(r, p, qlen, 1); | |
| 1720 | |
| 1721 b->pos += 2 + qlen; | |
| 1722 } | |
| 1723 | |
| 1724 if (b->pos != b->start) { | |
| 1725 b->last = ngx_movemem(b->start, b->pos, b->last - b->pos); | |
| 1726 b->pos = b->start; | |
| 1727 } | |
| 1728 } | |
| 1729 | |
| 1730 if (ngx_handle_read_event(rev, 0) != NGX_OK) { | |
| 1731 goto failed; | |
| 1732 } | |
| 1733 | |
| 1734 return; | |
| 1735 | |
| 1736 failed: | |
| 1737 | |
| 1738 ngx_close_connection(c); | |
| 1739 rec->tcp = NULL; | |
| 1740 } | |
| 1741 | |
| 1742 | |
| 1743 static void | |
| 1744 ngx_resolver_process_response(ngx_resolver_t *r, u_char *buf, size_t n, | |
| 1745 ngx_uint_t tcp) | |
| 1649 | 1746 { |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1747 char *err; |
| 6367 | 1748 ngx_uint_t i, times, ident, qident, flags, code, nqs, nan, trunc, |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1749 qtype, qclass; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1750 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1751 ngx_uint_t qident6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1752 #endif |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1753 ngx_queue_t *q; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1754 ngx_resolver_qs_t *qs; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1755 ngx_resolver_hdr_t *response; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1756 ngx_resolver_node_t *rn; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1757 |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1758 if (n < sizeof(ngx_resolver_hdr_t)) { |
| 1649 | 1759 goto short_response; |
| 1760 } | |
| 1761 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1762 response = (ngx_resolver_hdr_t *) buf; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1763 |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1764 ident = (response->ident_hi << 8) + response->ident_lo; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1765 flags = (response->flags_hi << 8) + response->flags_lo; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1766 nqs = (response->nqs_hi << 8) + response->nqs_lo; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1767 nan = (response->nan_hi << 8) + response->nan_lo; |
| 6367 | 1768 trunc = flags & 0x0200; |
| 1649 | 1769 |
| 1770 ngx_log_debug6(NGX_LOG_DEBUG_CORE, r->log, 0, | |
|
6509
7640d6c213e1
Removed redundant "u" format specifier.
Ruslan Ermilov <ru@nginx.com>
parents:
6478
diff
changeset
|
1771 "resolver DNS response %ui fl:%04Xi %ui/%ui/%ud/%ud", |
| 1649 | 1772 ident, flags, nqs, nan, |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1773 (response->nns_hi << 8) + response->nns_lo, |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1774 (response->nar_hi << 8) + response->nar_lo); |
| 1649 | 1775 |
|
5470
aebdca7e8f8f
Resolver: fixed response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5469
diff
changeset
|
1776 /* response to a standard query */ |
| 6367 | 1777 if ((flags & 0xf870) != 0x8000 || (trunc && tcp)) { |
| 1649 | 1778 ngx_log_error(r->log_level, r->log, 0, |
|
6509
7640d6c213e1
Removed redundant "u" format specifier.
Ruslan Ermilov <ru@nginx.com>
parents:
6478
diff
changeset
|
1779 "invalid %s DNS response %ui fl:%04Xi", |
| 6367 | 1780 tcp ? "TCP" : "UDP", ident, flags); |
| 1649 | 1781 return; |
| 1782 } | |
| 1783 | |
|
5470
aebdca7e8f8f
Resolver: fixed response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5469
diff
changeset
|
1784 code = flags & 0xf; |
| 1649 | 1785 |
|
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1786 if (code == NGX_RESOLVE_FORMERR) { |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1787 |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1788 times = 0; |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1789 |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1790 for (q = ngx_queue_head(&r->name_resend_queue); |
|
6347
81d44cd4044e
Resolver: fixed possible segmentation fault on DNS format error.
Roman Arutyunyan <arut@nginx.com>
parents:
6196
diff
changeset
|
1791 q != ngx_queue_sentinel(&r->name_resend_queue) && times++ < 100; |
|
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1792 q = ngx_queue_next(q)) |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1793 { |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1794 rn = ngx_queue_data(q, ngx_resolver_node_t, queue); |
|
8055
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
1795 |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
1796 if (rn->query) { |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
1797 qident = (rn->query[0] << 8) + rn->query[1]; |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
1798 |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
1799 if (qident == ident) { |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
1800 goto dns_error_name; |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
1801 } |
|
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1802 } |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1803 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1804 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1805 if (rn->query6) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1806 qident6 = (rn->query6[0] << 8) + rn->query6[1]; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1807 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1808 if (qident6 == ident) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1809 goto dns_error_name; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1810 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1811 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1812 #endif |
|
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1813 } |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1814 |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1815 goto dns_error; |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1816 } |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1817 |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1818 if (code > NGX_RESOLVE_REFUSED) { |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1819 goto dns_error; |
| 1649 | 1820 } |
| 1821 | |
| 1822 if (nqs != 1) { | |
| 1823 err = "invalid number of questions in DNS response"; | |
| 1824 goto done; | |
| 1825 } | |
| 1826 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1827 i = sizeof(ngx_resolver_hdr_t); |
| 1649 | 1828 |
| 1829 while (i < (ngx_uint_t) n) { | |
|
7854
4364b39de407
Resolver: explicit check for compression pointers in question.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7853
diff
changeset
|
1830 |
|
4364b39de407
Resolver: explicit check for compression pointers in question.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7853
diff
changeset
|
1831 if (buf[i] & 0xc0) { |
|
4364b39de407
Resolver: explicit check for compression pointers in question.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7853
diff
changeset
|
1832 err = "unexpected compression pointer in DNS response"; |
|
4364b39de407
Resolver: explicit check for compression pointers in question.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7853
diff
changeset
|
1833 goto done; |
|
4364b39de407
Resolver: explicit check for compression pointers in question.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7853
diff
changeset
|
1834 } |
|
4364b39de407
Resolver: explicit check for compression pointers in question.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7853
diff
changeset
|
1835 |
| 1649 | 1836 if (buf[i] == '\0') { |
| 1837 goto found; | |
| 1838 } | |
| 1839 | |
|
5470
aebdca7e8f8f
Resolver: fixed response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5469
diff
changeset
|
1840 i += 1 + buf[i]; |
| 1649 | 1841 } |
| 1842 | |
| 1843 goto short_response; | |
| 1844 | |
| 1845 found: | |
| 1846 | |
|
5470
aebdca7e8f8f
Resolver: fixed response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5469
diff
changeset
|
1847 if (i++ == sizeof(ngx_resolver_hdr_t)) { |
| 1649 | 1848 err = "zero-length domain name in DNS response"; |
| 1849 goto done; | |
| 1850 } | |
| 1851 | |
| 1852 if (i + sizeof(ngx_resolver_qs_t) + nan * (2 + sizeof(ngx_resolver_an_t)) | |
| 1853 > (ngx_uint_t) n) | |
| 1854 { | |
| 1855 goto short_response; | |
| 1856 } | |
| 1857 | |
| 1858 qs = (ngx_resolver_qs_t *) &buf[i]; | |
| 1859 | |
| 1860 qtype = (qs->type_hi << 8) + qs->type_lo; | |
| 1861 qclass = (qs->class_hi << 8) + qs->class_lo; | |
| 1862 | |
| 1863 ngx_log_debug2(NGX_LOG_DEBUG_CORE, r->log, 0, | |
|
1967
4a4b15c9c474
use correct ngx_sprintf() formats
Igor Sysoev <igor@sysoev.ru>
parents:
1966
diff
changeset
|
1864 "resolver DNS response qt:%ui cl:%ui", qtype, qclass); |
| 1649 | 1865 |
| 1866 if (qclass != 1) { | |
| 1867 ngx_log_error(r->log_level, r->log, 0, | |
|
1967
4a4b15c9c474
use correct ngx_sprintf() formats
Igor Sysoev <igor@sysoev.ru>
parents:
1966
diff
changeset
|
1868 "unknown query class %ui in DNS response", qclass); |
| 1649 | 1869 return; |
| 1870 } | |
| 1871 | |
| 1872 switch (qtype) { | |
| 1873 | |
| 1874 case NGX_RESOLVE_A: | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1875 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1876 case NGX_RESOLVE_AAAA: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1877 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1878 |
| 6367 | 1879 ngx_resolver_process_a(r, buf, n, ident, code, qtype, nan, trunc, |
|
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
1880 i + sizeof(ngx_resolver_qs_t)); |
| 1649 | 1881 |
| 1882 break; | |
| 1883 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1884 case NGX_RESOLVE_SRV: |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1885 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1886 ngx_resolver_process_srv(r, buf, n, ident, code, nan, trunc, |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1887 i + sizeof(ngx_resolver_qs_t)); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1888 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1889 break; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1890 |
| 1649 | 1891 case NGX_RESOLVE_PTR: |
| 1892 | |
|
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
1893 ngx_resolver_process_ptr(r, buf, n, ident, code, nan); |
| 1649 | 1894 |
| 1895 break; | |
| 1896 | |
| 1897 default: | |
| 1898 ngx_log_error(r->log_level, r->log, 0, | |
|
1967
4a4b15c9c474
use correct ngx_sprintf() formats
Igor Sysoev <igor@sysoev.ru>
parents:
1966
diff
changeset
|
1899 "unknown query type %ui in DNS response", qtype); |
| 1649 | 1900 return; |
| 1901 } | |
| 1902 | |
| 1903 return; | |
| 1904 | |
| 1905 short_response: | |
| 1906 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1907 err = "short DNS response"; |
| 1649 | 1908 |
| 1909 done: | |
| 1910 | |
| 1911 ngx_log_error(r->log_level, r->log, 0, err); | |
| 1912 | |
| 1913 return; | |
|
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1914 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1915 dns_error_name: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1916 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1917 ngx_log_error(r->log_level, r->log, 0, |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1918 "DNS error (%ui: %s), query id:%ui, name:\"%*s\"", |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1919 code, ngx_resolver_strerror(code), ident, |
|
6478
3ef7bb882ad4
Fixed logging with variable field width.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6460
diff
changeset
|
1920 (size_t) rn->nlen, rn->name); |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1921 return; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1922 |
|
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1923 dns_error: |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1924 |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1925 ngx_log_error(r->log_level, r->log, 0, |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1926 "DNS error (%ui: %s), query id:%ui", |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1927 code, ngx_resolver_strerror(code), ident); |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1928 return; |
| 1649 | 1929 } |
| 1930 | |
| 1931 | |
| 1932 static void | |
| 6370 | 1933 ngx_resolver_process_a(ngx_resolver_t *r, u_char *buf, size_t n, |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1934 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t qtype, |
| 6367 | 1935 ngx_uint_t nan, ngx_uint_t trunc, ngx_uint_t ans) |
| 583 | 1936 { |
| 6367 | 1937 char *err; |
| 1938 u_char *cname; | |
| 1939 size_t len; | |
| 1940 int32_t ttl; | |
| 1941 uint32_t hash; | |
| 1942 in_addr_t *addr; | |
| 1943 ngx_str_t name; | |
| 6370 | 1944 ngx_uint_t type, class, qident, naddrs, a, i, j, start; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1945 #if (NGX_HAVE_INET6) |
| 6367 | 1946 struct in6_addr *addr6; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1947 #endif |
| 6367 | 1948 ngx_resolver_an_t *an; |
| 1949 ngx_resolver_ctx_t *ctx, *next; | |
| 1950 ngx_resolver_node_t *rn; | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1951 ngx_resolver_addr_t *addrs; |
| 6367 | 1952 ngx_resolver_connection_t *rec; |
| 1649 | 1953 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1954 if (ngx_resolver_copy(r, &name, buf, |
| 6370 | 1955 buf + sizeof(ngx_resolver_hdr_t), buf + n) |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1956 != NGX_OK) |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1957 { |
| 1649 | 1958 return; |
| 1959 } | |
| 1960 | |
| 1961 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver qs:%V", &name); | |
| 1962 | |
| 1963 hash = ngx_crc32_short(name.data, name.len); | |
| 1964 | |
| 1965 /* lock name mutex */ | |
| 1966 | |
| 1967 rn = ngx_resolver_lookup_name(r, &name, hash); | |
| 1968 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1969 if (rn == NULL) { |
| 1649 | 1970 ngx_log_error(r->log_level, r->log, 0, |
|
7718
8fe7ebe5adc4
Resolver: improved error messages (ticket #2024).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7566
diff
changeset
|
1971 "unexpected DNS response for %V", &name); |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1972 ngx_resolver_free(r, name.data); |
| 1649 | 1973 goto failed; |
| 1974 } | |
| 1975 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1976 switch (qtype) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1977 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1978 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1979 case NGX_RESOLVE_AAAA: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1980 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1981 if (rn->query6 == NULL || rn->naddrs6 != (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1982 ngx_log_error(r->log_level, r->log, 0, |
|
7718
8fe7ebe5adc4
Resolver: improved error messages (ticket #2024).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7566
diff
changeset
|
1983 "unexpected DNS response for %V", &name); |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1984 ngx_resolver_free(r, name.data); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1985 goto failed; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1986 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1987 |
| 6367 | 1988 if (trunc && rn->tcp6) { |
| 1989 ngx_resolver_free(r, name.data); | |
| 1990 goto failed; | |
| 1991 } | |
| 1992 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1993 qident = (rn->query6[0] << 8) + rn->query6[1]; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1994 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1995 break; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1996 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1997 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1998 default: /* NGX_RESOLVE_A */ |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1999 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2000 if (rn->query == NULL || rn->naddrs != (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2001 ngx_log_error(r->log_level, r->log, 0, |
|
7718
8fe7ebe5adc4
Resolver: improved error messages (ticket #2024).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7566
diff
changeset
|
2002 "unexpected DNS response for %V", &name); |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2003 ngx_resolver_free(r, name.data); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2004 goto failed; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2005 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2006 |
| 6367 | 2007 if (trunc && rn->tcp) { |
| 2008 ngx_resolver_free(r, name.data); | |
| 2009 goto failed; | |
| 2010 } | |
| 2011 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2012 qident = (rn->query[0] << 8) + rn->query[1]; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2013 } |
| 1649 | 2014 |
| 2015 if (ident != qident) { | |
| 2016 ngx_log_error(r->log_level, r->log, 0, | |
|
7718
8fe7ebe5adc4
Resolver: improved error messages (ticket #2024).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7566
diff
changeset
|
2017 "wrong ident %ui in DNS response for %V, expect %ui", |
| 1649 | 2018 ident, &name, qident); |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2019 ngx_resolver_free(r, name.data); |
| 1649 | 2020 goto failed; |
| 2021 } | |
| 2022 | |
| 3139 | 2023 ngx_resolver_free(r, name.data); |
| 2024 | |
| 6367 | 2025 if (trunc) { |
| 2026 | |
| 2027 ngx_queue_remove(&rn->queue); | |
| 2028 | |
| 2029 if (rn->waiting == NULL) { | |
| 2030 ngx_rbtree_delete(&r->name_rbtree, &rn->node); | |
| 2031 ngx_resolver_free_node(r, rn); | |
| 2032 goto next; | |
| 2033 } | |
| 2034 | |
| 2035 rec = r->connections.elts; | |
| 2036 rec = &rec[rn->last_connection]; | |
| 2037 | |
| 2038 switch (qtype) { | |
| 2039 | |
| 2040 #if (NGX_HAVE_INET6) | |
| 2041 case NGX_RESOLVE_AAAA: | |
| 2042 | |
| 2043 rn->tcp6 = 1; | |
| 2044 | |
| 2045 (void) ngx_resolver_send_tcp_query(r, rec, rn->query6, rn->qlen); | |
| 2046 | |
| 2047 break; | |
| 2048 #endif | |
| 2049 | |
| 2050 default: /* NGX_RESOLVE_A */ | |
| 2051 | |
| 2052 rn->tcp = 1; | |
| 2053 | |
| 2054 (void) ngx_resolver_send_tcp_query(r, rec, rn->query, rn->qlen); | |
| 2055 } | |
| 2056 | |
| 2057 rn->expire = ngx_time() + r->resend_timeout; | |
| 2058 | |
| 2059 ngx_queue_insert_head(&r->name_resend_queue, &rn->queue); | |
| 2060 | |
| 2061 goto next; | |
| 2062 } | |
| 2063 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2064 if (code == 0 && rn->code) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2065 code = rn->code; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2066 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2067 |
|
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
2068 if (code == 0 && nan == 0) { |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2069 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2070 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2071 switch (qtype) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2072 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2073 case NGX_RESOLVE_AAAA: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2074 |
|
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2075 rn->naddrs6 = 0; |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2076 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2077 if (rn->naddrs == (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2078 goto next; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2079 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2080 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2081 if (rn->naddrs) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2082 goto export; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2083 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2084 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2085 break; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2086 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2087 default: /* NGX_RESOLVE_A */ |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2088 |
|
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2089 rn->naddrs = 0; |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2090 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2091 if (rn->naddrs6 == (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2092 goto next; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2093 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2094 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2095 if (rn->naddrs6) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2096 goto export; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2097 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2098 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2099 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2100 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2101 code = NGX_RESOLVE_NXDOMAIN; |
|
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
2102 } |
|
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
2103 |
| 1649 | 2104 if (code) { |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2105 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2106 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2107 switch (qtype) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2108 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2109 case NGX_RESOLVE_AAAA: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2110 |
|
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2111 rn->naddrs6 = 0; |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2112 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2113 if (rn->naddrs == (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2114 rn->code = (u_char) code; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2115 goto next; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2116 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2117 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2118 break; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2119 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2120 default: /* NGX_RESOLVE_A */ |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2121 |
|
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2122 rn->naddrs = 0; |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2123 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2124 if (rn->naddrs6 == (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2125 rn->code = (u_char) code; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2126 goto next; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2127 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2128 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2129 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2130 |
| 1649 | 2131 next = rn->waiting; |
| 2132 rn->waiting = NULL; | |
| 2133 | |
| 2134 ngx_queue_remove(&rn->queue); | |
| 2135 | |
| 2136 ngx_rbtree_delete(&r->name_rbtree, &rn->node); | |
| 2137 | |
| 2138 /* unlock name mutex */ | |
| 2139 | |
| 2140 while (next) { | |
|
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2141 ctx = next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2142 ctx->state = code; |
|
6456
c94aba230a5a
Resolver: introduced valid field in resolver responses.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6372
diff
changeset
|
2143 ctx->valid = ngx_time() + (r->valid ? r->valid : 10); |
|
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2144 next = ctx->next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2145 |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2146 ctx->handler(ctx); |
| 1649 | 2147 } |
| 2148 | |
|
5920
7420068c4d4b
Resolver: fixed use-after-free memory access.
Ruslan Ermilov <ru@nginx.com>
parents:
5820
diff
changeset
|
2149 ngx_resolver_free_node(r, rn); |
|
7420068c4d4b
Resolver: fixed use-after-free memory access.
Ruslan Ermilov <ru@nginx.com>
parents:
5820
diff
changeset
|
2150 |
| 1649 | 2151 return; |
| 2152 } | |
| 2153 | |
| 2154 i = ans; | |
| 2155 naddrs = 0; | |
| 2156 cname = NULL; | |
| 2157 | |
| 2158 for (a = 0; a < nan; a++) { | |
| 2159 | |
| 2160 start = i; | |
| 2161 | |
| 6370 | 2162 while (i < n) { |
| 1649 | 2163 |
| 2164 if (buf[i] & 0xc0) { | |
| 2165 i += 2; | |
| 2166 goto found; | |
| 2167 } | |
| 2168 | |
| 2169 if (buf[i] == 0) { | |
| 2170 i++; | |
| 2171 goto test_length; | |
| 2172 } | |
| 2173 | |
| 2174 i += 1 + buf[i]; | |
| 2175 } | |
| 2176 | |
| 2177 goto short_response; | |
| 2178 | |
| 2179 test_length: | |
| 2180 | |
| 2181 if (i - start < 2) { | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2182 err = "invalid name in DNS response"; |
| 1649 | 2183 goto invalid; |
| 2184 } | |
| 2185 | |
| 2186 found: | |
| 2187 | |
| 6370 | 2188 if (i + sizeof(ngx_resolver_an_t) >= n) { |
| 1649 | 2189 goto short_response; |
| 2190 } | |
| 2191 | |
| 2192 an = (ngx_resolver_an_t *) &buf[i]; | |
| 2193 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2194 type = (an->type_hi << 8) + an->type_lo; |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2195 class = (an->class_hi << 8) + an->class_lo; |
| 1649 | 2196 len = (an->len_hi << 8) + an->len_lo; |
|
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2197 ttl = (an->ttl[0] << 24) + (an->ttl[1] << 16) |
|
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2198 + (an->ttl[2] << 8) + (an->ttl[3]); |
|
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2199 |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2200 if (class != 1) { |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2201 ngx_log_error(r->log_level, r->log, 0, |
|
7718
8fe7ebe5adc4
Resolver: improved error messages (ticket #2024).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7566
diff
changeset
|
2202 "unexpected RR class %ui in DNS response", class); |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2203 goto failed; |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2204 } |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2205 |
|
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2206 if (ttl < 0) { |
|
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2207 ttl = 0; |
|
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2208 } |
| 1649 | 2209 |
|
5485
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
2210 rn->ttl = ngx_min(rn->ttl, (uint32_t) ttl); |
|
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
2211 |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2212 i += sizeof(ngx_resolver_an_t); |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2213 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2214 switch (type) { |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2215 |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2216 case NGX_RESOLVE_A: |
| 1649 | 2217 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2218 if (qtype != NGX_RESOLVE_A) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2219 err = "unexpected A record in DNS response"; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2220 goto invalid; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2221 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2222 |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2223 if (len != 4) { |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2224 err = "invalid A record in DNS response"; |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2225 goto invalid; |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2226 } |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2227 |
| 6370 | 2228 if (i + 4 > n) { |
| 1649 | 2229 goto short_response; |
| 2230 } | |
| 2231 | |
| 2232 naddrs++; | |
| 2233 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2234 break; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2235 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2236 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2237 case NGX_RESOLVE_AAAA: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2238 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2239 if (qtype != NGX_RESOLVE_AAAA) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2240 err = "unexpected AAAA record in DNS response"; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2241 goto invalid; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2242 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2243 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2244 if (len != 16) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2245 err = "invalid AAAA record in DNS response"; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2246 goto invalid; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2247 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2248 |
| 6370 | 2249 if (i + 16 > n) { |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2250 goto short_response; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2251 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2252 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2253 naddrs++; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2254 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2255 break; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2256 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2257 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2258 case NGX_RESOLVE_CNAME: |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2259 |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2260 cname = &buf[i]; |
| 1965 | 2261 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2262 break; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2263 |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2264 case NGX_RESOLVE_DNAME: |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2265 |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2266 break; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2267 |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2268 default: |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2269 |
| 1966 | 2270 ngx_log_error(r->log_level, r->log, 0, |
|
7718
8fe7ebe5adc4
Resolver: improved error messages (ticket #2024).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7566
diff
changeset
|
2271 "unexpected RR type %ui in DNS response", type); |
| 1649 | 2272 } |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2273 |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2274 i += len; |
| 1649 | 2275 } |
| 2276 | |
|
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2277 ngx_log_debug3(NGX_LOG_DEBUG_CORE, r->log, 0, |
|
5485
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
2278 "resolver naddrs:%ui cname:%p ttl:%uD", |
|
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
2279 naddrs, cname, rn->ttl); |
| 1649 | 2280 |
| 2281 if (naddrs) { | |
| 2282 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2283 switch (qtype) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2284 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2285 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2286 case NGX_RESOLVE_AAAA: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2287 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2288 if (naddrs == 1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2289 addr6 = &rn->u6.addr6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2290 rn->naddrs6 = 1; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2291 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2292 } else { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2293 addr6 = ngx_resolver_alloc(r, naddrs * sizeof(struct in6_addr)); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2294 if (addr6 == NULL) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2295 goto failed; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2296 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2297 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2298 rn->u6.addrs6 = addr6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2299 rn->naddrs6 = (u_short) naddrs; |
| 1649 | 2300 } |
| 2301 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2302 #if (NGX_SUPPRESS_WARN) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2303 addr = NULL; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2304 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2305 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2306 break; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2307 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2308 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2309 default: /* NGX_RESOLVE_A */ |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2310 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2311 if (naddrs == 1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2312 addr = &rn->u.addr; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2313 rn->naddrs = 1; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2314 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2315 } else { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2316 addr = ngx_resolver_alloc(r, naddrs * sizeof(in_addr_t)); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2317 if (addr == NULL) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2318 goto failed; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2319 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2320 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2321 rn->u.addrs = addr; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2322 rn->naddrs = (u_short) naddrs; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2323 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2324 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2325 #if (NGX_HAVE_INET6 && NGX_SUPPRESS_WARN) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2326 addr6 = NULL; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2327 #endif |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2328 } |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2329 |
| 6370 | 2330 j = 0; |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2331 i = ans; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2332 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2333 for (a = 0; a < nan; a++) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2334 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2335 for ( ;; ) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2336 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2337 if (buf[i] & 0xc0) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2338 i += 2; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2339 break; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2340 } |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2341 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2342 if (buf[i] == 0) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2343 i++; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2344 break; |
| 1649 | 2345 } |
| 2346 | |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2347 i += 1 + buf[i]; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2348 } |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2349 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2350 an = (ngx_resolver_an_t *) &buf[i]; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2351 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2352 type = (an->type_hi << 8) + an->type_lo; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2353 len = (an->len_hi << 8) + an->len_lo; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2354 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2355 i += sizeof(ngx_resolver_an_t); |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2356 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2357 if (type == NGX_RESOLVE_A) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2358 |
| 6370 | 2359 addr[j] = htonl((buf[i] << 24) + (buf[i + 1] << 16) |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2360 + (buf[i + 2] << 8) + (buf[i + 3])); |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2361 |
| 6370 | 2362 if (++j == naddrs) { |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2363 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2364 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2365 if (rn->naddrs6 == (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2366 goto next; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2367 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2368 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2369 |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2370 break; |
| 1649 | 2371 } |
| 2372 } | |
| 2373 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2374 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2375 else if (type == NGX_RESOLVE_AAAA) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2376 |
| 6370 | 2377 ngx_memcpy(addr6[j].s6_addr, &buf[i], 16); |
| 2378 | |
| 2379 if (++j == naddrs) { | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2380 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2381 if (rn->naddrs == (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2382 goto next; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2383 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2384 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2385 break; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2386 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2387 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2388 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2389 |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2390 i += len; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2391 } |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2392 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2393 |
|
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2394 switch (qtype) { |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2395 |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2396 #if (NGX_HAVE_INET6) |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2397 case NGX_RESOLVE_AAAA: |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2398 |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2399 if (rn->naddrs6 == (u_short) -1) { |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2400 rn->naddrs6 = 0; |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2401 } |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2402 |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2403 break; |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2404 #endif |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2405 |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2406 default: /* NGX_RESOLVE_A */ |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2407 |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2408 if (rn->naddrs == (u_short) -1) { |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2409 rn->naddrs = 0; |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2410 } |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2411 } |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2412 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2413 if (rn->naddrs != (u_short) -1 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2414 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2415 && rn->naddrs6 != (u_short) -1 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2416 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2417 && rn->naddrs |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2418 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2419 + rn->naddrs6 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2420 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2421 > 0) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2422 { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2423 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2424 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2425 export: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2426 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2427 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2428 naddrs = rn->naddrs; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2429 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2430 naddrs += rn->naddrs6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2431 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2432 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2433 if (naddrs == 1 && rn->naddrs == 1) { |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2434 addrs = NULL; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2435 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2436 } else { |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2437 addrs = ngx_resolver_export(r, rn, 0); |
| 1649 | 2438 if (addrs == NULL) { |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2439 goto failed; |
| 1649 | 2440 } |
| 2441 } | |
| 2442 | |
| 2443 ngx_queue_remove(&rn->queue); | |
| 2444 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2445 rn->valid = ngx_time() + (r->valid ? r->valid : (time_t) rn->ttl); |
| 1649 | 2446 rn->expire = ngx_time() + r->expire; |
| 2447 | |
| 2448 ngx_queue_insert_head(&r->name_expire_queue, &rn->queue); | |
| 2449 | |
| 2450 next = rn->waiting; | |
| 2451 rn->waiting = NULL; | |
| 2452 | |
| 2453 /* unlock name mutex */ | |
| 2454 | |
| 2455 while (next) { | |
|
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2456 ctx = next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2457 ctx->state = NGX_OK; |
|
6456
c94aba230a5a
Resolver: introduced valid field in resolver responses.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6372
diff
changeset
|
2458 ctx->valid = rn->valid; |
|
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2459 ctx->naddrs = naddrs; |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2460 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2461 if (addrs == NULL) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2462 ctx->addrs = &ctx->addr; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2463 ctx->addr.sockaddr = (struct sockaddr *) &ctx->sin; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2464 ctx->addr.socklen = sizeof(struct sockaddr_in); |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2465 ngx_memzero(&ctx->sin, sizeof(struct sockaddr_in)); |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2466 ctx->sin.sin_family = AF_INET; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2467 ctx->sin.sin_addr.s_addr = rn->u.addr; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2468 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2469 } else { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2470 ctx->addrs = addrs; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2471 } |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2472 |
|
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2473 next = ctx->next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2474 |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2475 ctx->handler(ctx); |
| 1649 | 2476 } |
| 2477 | |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2478 if (addrs != NULL) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2479 ngx_resolver_free(r, addrs->sockaddr); |
| 1649 | 2480 ngx_resolver_free(r, addrs); |
| 2481 } | |
| 2482 | |
|
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
2483 ngx_resolver_free(r, rn->query); |
|
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
2484 rn->query = NULL; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2485 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2486 rn->query6 = NULL; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2487 #endif |
|
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
2488 |
| 1649 | 2489 return; |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2490 } |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2491 |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2492 if (cname) { |
| 1649 | 2493 |
| 2494 /* CNAME only */ | |
| 2495 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2496 if (rn->naddrs == (u_short) -1 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2497 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2498 || rn->naddrs6 == (u_short) -1 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2499 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2500 ) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2501 { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2502 goto next; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2503 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2504 |
| 6370 | 2505 if (ngx_resolver_copy(r, &name, buf, cname, buf + n) != NGX_OK) { |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2506 goto failed; |
| 1649 | 2507 } |
| 2508 | |
| 2509 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, | |
| 2510 "resolver cname:\"%V\"", &name); | |
| 2511 | |
|
1741
0829024c924d
fix segfault if response will have CNAME only
Igor Sysoev <igor@sysoev.ru>
parents:
1689
diff
changeset
|
2512 ngx_queue_remove(&rn->queue); |
|
0829024c924d
fix segfault if response will have CNAME only
Igor Sysoev <igor@sysoev.ru>
parents:
1689
diff
changeset
|
2513 |
| 1649 | 2514 rn->cnlen = (u_short) name.len; |
| 2515 rn->u.cname = name.data; | |
|
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2516 |
|
5485
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
2517 rn->valid = ngx_time() + (r->valid ? r->valid : (time_t) rn->ttl); |
| 1649 | 2518 rn->expire = ngx_time() + r->expire; |
| 2519 | |
| 2520 ngx_queue_insert_head(&r->name_expire_queue, &rn->queue); | |
| 2521 | |
|
6352
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2522 ngx_resolver_free(r, rn->query); |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2523 rn->query = NULL; |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2524 #if (NGX_HAVE_INET6) |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2525 rn->query6 = NULL; |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2526 #endif |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2527 |
| 1649 | 2528 ctx = rn->waiting; |
| 2529 rn->waiting = NULL; | |
| 2530 | |
| 2531 if (ctx) { | |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
2532 |
|
6352
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2533 if (ctx->recursion++ >= NGX_RESOLVER_MAX_RECURSION) { |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2534 |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2535 /* unlock name mutex */ |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2536 |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2537 do { |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2538 ctx->state = NGX_RESOLVE_NXDOMAIN; |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2539 next = ctx->next; |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2540 |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2541 ctx->handler(ctx); |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2542 |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2543 ctx = next; |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2544 } while (ctx); |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2545 |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2546 return; |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2547 } |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2548 |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
2549 for (next = ctx; next; next = next->next) { |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
2550 next->node = NULL; |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
2551 } |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
2552 |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
2553 (void) ngx_resolve_name_locked(r, ctx, &name); |
| 1649 | 2554 } |
| 2555 | |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2556 /* unlock name mutex */ |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2557 |
| 1649 | 2558 return; |
| 2559 } | |
| 2560 | |
| 2561 ngx_log_error(r->log_level, r->log, 0, | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2562 "no A or CNAME types in DNS response"); |
| 1649 | 2563 return; |
| 2564 | |
| 2565 short_response: | |
| 2566 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2567 err = "short DNS response"; |
| 1649 | 2568 |
| 2569 invalid: | |
| 2570 | |
| 2571 /* unlock name mutex */ | |
| 2572 | |
| 2573 ngx_log_error(r->log_level, r->log, 0, err); | |
| 2574 | |
| 2575 return; | |
| 2576 | |
| 2577 failed: | |
| 2578 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2579 next: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2580 |
| 1649 | 2581 /* unlock name mutex */ |
| 2582 | |
| 2583 return; | |
| 2584 } | |
| 2585 | |
| 2586 | |
| 2587 static void | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2588 ngx_resolver_process_srv(ngx_resolver_t *r, u_char *buf, size_t n, |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2589 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan, |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2590 ngx_uint_t trunc, ngx_uint_t ans) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2591 { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2592 char *err; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2593 u_char *cname; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2594 size_t len; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2595 int32_t ttl; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2596 uint32_t hash; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2597 ngx_str_t name; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2598 ngx_uint_t type, qident, class, start, nsrvs, a, i, j; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2599 ngx_resolver_an_t *an; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2600 ngx_resolver_ctx_t *ctx, *next; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2601 ngx_resolver_srv_t *srvs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2602 ngx_resolver_node_t *rn; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2603 ngx_resolver_connection_t *rec; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2604 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2605 if (ngx_resolver_copy(r, &name, buf, |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2606 buf + sizeof(ngx_resolver_hdr_t), buf + n) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2607 != NGX_OK) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2608 { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2609 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2610 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2611 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2612 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver qs:%V", &name); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2613 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2614 hash = ngx_crc32_short(name.data, name.len); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2615 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2616 rn = ngx_resolver_lookup_srv(r, &name, hash); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2617 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2618 if (rn == NULL || rn->query == NULL) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2619 ngx_log_error(r->log_level, r->log, 0, |
|
7718
8fe7ebe5adc4
Resolver: improved error messages (ticket #2024).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7566
diff
changeset
|
2620 "unexpected DNS response for %V", &name); |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2621 ngx_resolver_free(r, name.data); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2622 goto failed; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2623 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2624 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2625 if (trunc && rn->tcp) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2626 ngx_resolver_free(r, name.data); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2627 goto failed; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2628 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2629 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2630 qident = (rn->query[0] << 8) + rn->query[1]; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2631 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2632 if (ident != qident) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2633 ngx_log_error(r->log_level, r->log, 0, |
|
7718
8fe7ebe5adc4
Resolver: improved error messages (ticket #2024).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7566
diff
changeset
|
2634 "wrong ident %ui in DNS response for %V, expect %ui", |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2635 ident, &name, qident); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2636 ngx_resolver_free(r, name.data); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2637 goto failed; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2638 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2639 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2640 ngx_resolver_free(r, name.data); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2641 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2642 if (trunc) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2643 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2644 ngx_queue_remove(&rn->queue); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2645 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2646 if (rn->waiting == NULL) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2647 ngx_rbtree_delete(&r->srv_rbtree, &rn->node); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2648 ngx_resolver_free_node(r, rn); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2649 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2650 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2651 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2652 rec = r->connections.elts; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2653 rec = &rec[rn->last_connection]; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2654 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2655 rn->tcp = 1; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2656 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2657 (void) ngx_resolver_send_tcp_query(r, rec, rn->query, rn->qlen); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2658 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2659 rn->expire = ngx_time() + r->resend_timeout; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2660 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2661 ngx_queue_insert_head(&r->srv_resend_queue, &rn->queue); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2662 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2663 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2664 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2665 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2666 if (code == 0 && rn->code) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2667 code = rn->code; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2668 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2669 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2670 if (code == 0 && nan == 0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2671 code = NGX_RESOLVE_NXDOMAIN; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2672 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2673 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2674 if (code) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2675 next = rn->waiting; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2676 rn->waiting = NULL; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2677 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2678 ngx_queue_remove(&rn->queue); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2679 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2680 ngx_rbtree_delete(&r->srv_rbtree, &rn->node); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2681 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2682 while (next) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2683 ctx = next; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2684 ctx->state = code; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2685 ctx->valid = ngx_time() + (r->valid ? r->valid : 10); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2686 next = ctx->next; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2687 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2688 ctx->handler(ctx); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2689 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2690 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2691 ngx_resolver_free_node(r, rn); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2692 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2693 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2694 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2695 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2696 i = ans; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2697 nsrvs = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2698 cname = NULL; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2699 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2700 for (a = 0; a < nan; a++) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2701 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2702 start = i; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2703 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2704 while (i < n) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2705 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2706 if (buf[i] & 0xc0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2707 i += 2; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2708 goto found; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2709 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2710 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2711 if (buf[i] == 0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2712 i++; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2713 goto test_length; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2714 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2715 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2716 i += 1 + buf[i]; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2717 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2718 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2719 goto short_response; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2720 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2721 test_length: |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2722 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2723 if (i - start < 2) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2724 err = "invalid name DNS response"; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2725 goto invalid; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2726 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2727 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2728 found: |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2729 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2730 if (i + sizeof(ngx_resolver_an_t) >= n) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2731 goto short_response; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2732 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2733 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2734 an = (ngx_resolver_an_t *) &buf[i]; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2735 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2736 type = (an->type_hi << 8) + an->type_lo; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2737 class = (an->class_hi << 8) + an->class_lo; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2738 len = (an->len_hi << 8) + an->len_lo; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2739 ttl = (an->ttl[0] << 24) + (an->ttl[1] << 16) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2740 + (an->ttl[2] << 8) + (an->ttl[3]); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2741 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2742 if (class != 1) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2743 ngx_log_error(r->log_level, r->log, 0, |
|
7718
8fe7ebe5adc4
Resolver: improved error messages (ticket #2024).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7566
diff
changeset
|
2744 "unexpected RR class %ui in DNS response", class); |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2745 goto failed; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2746 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2747 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2748 if (ttl < 0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2749 ttl = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2750 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2751 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2752 rn->ttl = ngx_min(rn->ttl, (uint32_t) ttl); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2753 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2754 i += sizeof(ngx_resolver_an_t); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2755 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2756 switch (type) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2757 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2758 case NGX_RESOLVE_SRV: |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2759 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2760 if (i + 6 > n) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2761 goto short_response; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2762 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2763 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2764 if (ngx_resolver_copy(r, NULL, buf, &buf[i + 6], buf + n) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2765 != NGX_OK) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2766 { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2767 goto failed; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2768 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2769 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2770 nsrvs++; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2771 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2772 break; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2773 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2774 case NGX_RESOLVE_CNAME: |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2775 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2776 cname = &buf[i]; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2777 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2778 break; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2779 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2780 case NGX_RESOLVE_DNAME: |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2781 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2782 break; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2783 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2784 default: |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2785 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2786 ngx_log_error(r->log_level, r->log, 0, |
|
7718
8fe7ebe5adc4
Resolver: improved error messages (ticket #2024).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7566
diff
changeset
|
2787 "unexpected RR type %ui in DNS response", type); |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2788 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2789 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2790 i += len; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2791 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2792 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2793 ngx_log_debug3(NGX_LOG_DEBUG_CORE, r->log, 0, |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2794 "resolver nsrvs:%ui cname:%p ttl:%uD", |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2795 nsrvs, cname, rn->ttl); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2796 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2797 if (nsrvs) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2798 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2799 srvs = ngx_resolver_calloc(r, nsrvs * sizeof(ngx_resolver_srv_t)); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2800 if (srvs == NULL) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2801 goto failed; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2802 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2803 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2804 rn->u.srvs = srvs; |
|
6460
034329824dd3
Win32: fixed build after 384154fc634f.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6458
diff
changeset
|
2805 rn->nsrvs = (u_short) nsrvs; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2806 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2807 j = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2808 i = ans; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2809 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2810 for (a = 0; a < nan; a++) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2811 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2812 for ( ;; ) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2813 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2814 if (buf[i] & 0xc0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2815 i += 2; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2816 break; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2817 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2818 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2819 if (buf[i] == 0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2820 i++; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2821 break; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2822 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2823 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2824 i += 1 + buf[i]; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2825 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2826 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2827 an = (ngx_resolver_an_t *) &buf[i]; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2828 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2829 type = (an->type_hi << 8) + an->type_lo; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2830 len = (an->len_hi << 8) + an->len_lo; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2831 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2832 i += sizeof(ngx_resolver_an_t); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2833 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2834 if (type == NGX_RESOLVE_SRV) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2835 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2836 srvs[j].priority = (buf[i] << 8) + buf[i + 1]; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2837 srvs[j].weight = (buf[i + 2] << 8) + buf[i + 3]; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2838 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2839 if (srvs[j].weight == 0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2840 srvs[j].weight = 1; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2841 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2842 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2843 srvs[j].port = (buf[i + 4] << 8) + buf[i + 5]; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2844 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2845 if (ngx_resolver_copy(r, &srvs[j].name, buf, &buf[i + 6], |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2846 buf + n) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2847 != NGX_OK) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2848 { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2849 goto failed; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2850 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2851 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2852 j++; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2853 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2854 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2855 i += len; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2856 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2857 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2858 ngx_sort(srvs, nsrvs, sizeof(ngx_resolver_srv_t), |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2859 ngx_resolver_cmp_srvs); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2860 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2861 ngx_resolver_free(r, rn->query); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2862 rn->query = NULL; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2863 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2864 ngx_queue_remove(&rn->queue); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2865 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2866 rn->valid = ngx_time() + (r->valid ? r->valid : (time_t) rn->ttl); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2867 rn->expire = ngx_time() + r->expire; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2868 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2869 ngx_queue_insert_head(&r->srv_expire_queue, &rn->queue); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2870 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2871 next = rn->waiting; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2872 rn->waiting = NULL; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2873 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2874 while (next) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2875 ctx = next; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2876 next = ctx->next; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2877 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2878 ngx_resolver_resolve_srv_names(ctx, rn); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2879 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2880 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2881 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2882 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2883 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2884 rn->nsrvs = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2885 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2886 if (cname) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2887 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2888 /* CNAME only */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2889 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2890 if (ngx_resolver_copy(r, &name, buf, cname, buf + n) != NGX_OK) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2891 goto failed; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2892 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2893 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2894 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2895 "resolver cname:\"%V\"", &name); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2896 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2897 ngx_queue_remove(&rn->queue); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2898 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2899 rn->cnlen = (u_short) name.len; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2900 rn->u.cname = name.data; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2901 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2902 rn->valid = ngx_time() + (r->valid ? r->valid : (time_t) rn->ttl); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2903 rn->expire = ngx_time() + r->expire; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2904 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2905 ngx_queue_insert_head(&r->srv_expire_queue, &rn->queue); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2906 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2907 ngx_resolver_free(r, rn->query); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2908 rn->query = NULL; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2909 #if (NGX_HAVE_INET6) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2910 rn->query6 = NULL; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2911 #endif |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2912 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2913 ctx = rn->waiting; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2914 rn->waiting = NULL; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2915 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2916 if (ctx) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2917 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2918 if (ctx->recursion++ >= NGX_RESOLVER_MAX_RECURSION) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2919 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2920 /* unlock name mutex */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2921 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2922 do { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2923 ctx->state = NGX_RESOLVE_NXDOMAIN; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2924 next = ctx->next; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2925 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2926 ctx->handler(ctx); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2927 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2928 ctx = next; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2929 } while (ctx); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2930 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2931 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2932 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2933 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2934 for (next = ctx; next; next = next->next) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2935 next->node = NULL; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2936 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2937 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2938 (void) ngx_resolve_name_locked(r, ctx, &name); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2939 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2940 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2941 /* unlock name mutex */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2942 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2943 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2944 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2945 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2946 ngx_log_error(r->log_level, r->log, 0, "no SRV type in DNS response"); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2947 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2948 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2949 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2950 short_response: |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2951 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2952 err = "short DNS response"; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2953 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2954 invalid: |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2955 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2956 /* unlock name mutex */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2957 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2958 ngx_log_error(r->log_level, r->log, 0, err); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2959 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2960 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2961 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2962 failed: |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2963 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2964 /* unlock name mutex */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2965 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2966 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2967 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2968 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2969 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2970 static void |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2971 ngx_resolver_resolve_srv_names(ngx_resolver_ctx_t *ctx, ngx_resolver_node_t *rn) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2972 { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2973 ngx_uint_t i; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2974 ngx_resolver_t *r; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2975 ngx_resolver_ctx_t *cctx; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2976 ngx_resolver_srv_name_t *srvs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2977 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2978 r = ctx->resolver; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2979 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2980 ctx->node = NULL; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2981 ctx->state = NGX_OK; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2982 ctx->valid = rn->valid; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2983 ctx->count = rn->nsrvs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2984 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2985 srvs = ngx_resolver_calloc(r, rn->nsrvs * sizeof(ngx_resolver_srv_name_t)); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2986 if (srvs == NULL) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2987 goto failed; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2988 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2989 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2990 ctx->srvs = srvs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2991 ctx->nsrvs = rn->nsrvs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2992 |
|
6847
d72b38376092
Resolver: fixed handling of partially resolved SRV.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6846
diff
changeset
|
2993 if (ctx->event && ctx->event->timer_set) { |
|
d72b38376092
Resolver: fixed handling of partially resolved SRV.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6846
diff
changeset
|
2994 ngx_del_timer(ctx->event); |
|
d72b38376092
Resolver: fixed handling of partially resolved SRV.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6846
diff
changeset
|
2995 } |
|
d72b38376092
Resolver: fixed handling of partially resolved SRV.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6846
diff
changeset
|
2996 |
|
6860
f18c285c2e59
Win32: fixed some warnings reported by Borland C.
Maxim Dounin <mdounin@mdounin.ru>
parents:
6847
diff
changeset
|
2997 for (i = 0; i < (ngx_uint_t) rn->nsrvs; i++) { |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2998 srvs[i].name.data = ngx_resolver_alloc(r, rn->u.srvs[i].name.len); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2999 if (srvs[i].name.data == NULL) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3000 goto failed; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3001 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3002 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3003 srvs[i].name.len = rn->u.srvs[i].name.len; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3004 ngx_memcpy(srvs[i].name.data, rn->u.srvs[i].name.data, |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3005 srvs[i].name.len); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3006 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3007 cctx = ngx_resolve_start(r, NULL); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3008 if (cctx == NULL) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3009 goto failed; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3010 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3011 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3012 cctx->name = srvs[i].name; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3013 cctx->handler = ngx_resolver_srv_names_handler; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3014 cctx->data = ctx; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3015 cctx->srvs = &srvs[i]; |
|
6847
d72b38376092
Resolver: fixed handling of partially resolved SRV.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6846
diff
changeset
|
3016 cctx->timeout = ctx->timeout; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3017 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3018 srvs[i].priority = rn->u.srvs[i].priority; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3019 srvs[i].weight = rn->u.srvs[i].weight; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3020 srvs[i].port = rn->u.srvs[i].port; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3021 srvs[i].ctx = cctx; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3022 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3023 if (ngx_resolve_name(cctx) == NGX_ERROR) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3024 srvs[i].ctx = NULL; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3025 goto failed; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3026 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3027 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3028 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3029 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3030 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3031 failed: |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3032 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3033 ctx->state = NGX_ERROR; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3034 ctx->valid = ngx_time() + (r->valid ? r->valid : 10); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3035 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3036 ctx->handler(ctx); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3037 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3038 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3039 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3040 static void |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3041 ngx_resolver_srv_names_handler(ngx_resolver_ctx_t *cctx) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3042 { |
|
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
3043 ngx_uint_t i; |
|
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
3044 ngx_addr_t *addrs; |
|
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
3045 ngx_resolver_t *r; |
|
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
3046 ngx_sockaddr_t *sockaddr; |
|
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
3047 ngx_resolver_ctx_t *ctx; |
|
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
3048 ngx_resolver_srv_name_t *srv; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3049 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3050 r = cctx->resolver; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3051 ctx = cctx->data; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3052 srv = cctx->srvs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3053 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3054 ctx->count--; |
|
7040
d49b74a683b1
Resolver: added the "async" flag to resolver context.
Roman Arutyunyan <arut@nginx.com>
parents:
7039
diff
changeset
|
3055 ctx->async |= cctx->async; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3056 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3057 srv->ctx = NULL; |
|
6714
c3e3de6d2672
Resolver: introduced state field in ngx_resolver_srv_name_t.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6593
diff
changeset
|
3058 srv->state = cctx->state; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3059 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3060 if (cctx->naddrs) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3061 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3062 ctx->valid = ngx_min(ctx->valid, cctx->valid); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3063 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3064 addrs = ngx_resolver_calloc(r, cctx->naddrs * sizeof(ngx_addr_t)); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3065 if (addrs == NULL) { |
|
7048
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
3066 srv->state = NGX_ERROR; |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
3067 goto done; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3068 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3069 |
|
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
3070 sockaddr = ngx_resolver_alloc(r, cctx->naddrs * sizeof(ngx_sockaddr_t)); |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3071 if (sockaddr == NULL) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3072 ngx_resolver_free(r, addrs); |
|
7048
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
3073 srv->state = NGX_ERROR; |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
3074 goto done; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3075 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3076 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3077 for (i = 0; i < cctx->naddrs; i++) { |
|
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
3078 addrs[i].sockaddr = &sockaddr[i].sockaddr; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3079 addrs[i].socklen = cctx->addrs[i].socklen; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3080 |
|
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
3081 ngx_memcpy(&sockaddr[i], cctx->addrs[i].sockaddr, |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3082 addrs[i].socklen); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3083 |
|
6593
b3b7e33083ac
Introduced ngx_inet_get_port() and ngx_inet_set_port() functions.
Roman Arutyunyan <arut@nginx.com>
parents:
6559
diff
changeset
|
3084 ngx_inet_set_port(addrs[i].sockaddr, srv->port); |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3085 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3086 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3087 srv->addrs = addrs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3088 srv->naddrs = cctx->naddrs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3089 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3090 |
|
7048
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
3091 done: |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
3092 |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3093 ngx_resolve_name_done(cctx); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3094 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3095 if (ctx->count == 0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3096 ngx_resolver_report_srv(r, ctx); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3097 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3098 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3099 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3100 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3101 static void |
| 1649 | 3102 ngx_resolver_process_ptr(ngx_resolver_t *r, u_char *buf, size_t n, |
|
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
3103 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan) |
| 1649 | 3104 { |
| 3105 char *err; | |
| 3106 size_t len; | |
| 3107 in_addr_t addr; | |
|
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
3108 int32_t ttl; |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3109 ngx_int_t octet; |
| 1649 | 3110 ngx_str_t name; |
|
6371
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3111 ngx_uint_t mask, type, class, qident, a, i, start; |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3112 ngx_queue_t *expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3113 ngx_rbtree_t *tree; |
| 1649 | 3114 ngx_resolver_an_t *an; |
| 3115 ngx_resolver_ctx_t *ctx, *next; | |
| 3116 ngx_resolver_node_t *rn; | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3117 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3118 uint32_t hash; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3119 ngx_int_t digit; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3120 struct in6_addr addr6; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3121 #endif |
| 1649 | 3122 |
| 6372 | 3123 if (ngx_resolver_copy(r, &name, buf, |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3124 buf + sizeof(ngx_resolver_hdr_t), buf + n) |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3125 != NGX_OK) |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3126 { |
|
5472
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
3127 return; |
| 1649 | 3128 } |
| 3129 | |
| 6372 | 3130 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver qs:%V", &name); |
| 3131 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3132 /* AF_INET */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3133 |
| 1649 | 3134 addr = 0; |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3135 i = sizeof(ngx_resolver_hdr_t); |
| 1649 | 3136 |
| 3137 for (mask = 0; mask < 32; mask += 8) { | |
| 3138 len = buf[i++]; | |
| 3139 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3140 octet = ngx_atoi(&buf[i], len); |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3141 if (octet == NGX_ERROR || octet > 255) { |
| 1649 | 3142 goto invalid_in_addr_arpa; |
| 3143 } | |
| 3144 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3145 addr += octet << mask; |
| 1649 | 3146 i += len; |
| 3147 } | |
| 3148 | |
|
5479
c0d6eae5a1c5
Resolver: lookups are case-insensitive.
Ruslan Ermilov <ru@nginx.com>
parents:
5478
diff
changeset
|
3149 if (ngx_strcasecmp(&buf[i], (u_char *) "\7in-addr\4arpa") == 0) { |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3150 i += sizeof("\7in-addr\4arpa"); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3151 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3152 /* lock addr mutex */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3153 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3154 rn = ngx_resolver_lookup_addr(r, addr); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3155 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3156 tree = &r->addr_rbtree; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3157 expire_queue = &r->addr_expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3158 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3159 goto valid; |
| 1649 | 3160 } |
| 3161 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3162 invalid_in_addr_arpa: |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3163 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3164 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3165 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3166 i = sizeof(ngx_resolver_hdr_t); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3167 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3168 for (octet = 15; octet >= 0; octet--) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3169 if (buf[i++] != '\1') { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3170 goto invalid_ip6_arpa; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3171 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3172 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3173 digit = ngx_hextoi(&buf[i++], 1); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3174 if (digit == NGX_ERROR) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3175 goto invalid_ip6_arpa; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3176 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3177 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3178 addr6.s6_addr[octet] = (u_char) digit; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3179 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3180 if (buf[i++] != '\1') { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3181 goto invalid_ip6_arpa; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3182 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3183 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3184 digit = ngx_hextoi(&buf[i++], 1); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3185 if (digit == NGX_ERROR) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3186 goto invalid_ip6_arpa; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3187 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3188 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3189 addr6.s6_addr[octet] += (u_char) (digit * 16); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3190 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3191 |
|
5479
c0d6eae5a1c5
Resolver: lookups are case-insensitive.
Ruslan Ermilov <ru@nginx.com>
parents:
5478
diff
changeset
|
3192 if (ngx_strcasecmp(&buf[i], (u_char *) "\3ip6\4arpa") == 0) { |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3193 i += sizeof("\3ip6\4arpa"); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3194 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3195 /* lock addr mutex */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3196 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3197 hash = ngx_crc32_short(addr6.s6_addr, 16); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3198 rn = ngx_resolver_lookup_addr6(r, &addr6, hash); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3199 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3200 tree = &r->addr6_rbtree; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3201 expire_queue = &r->addr6_expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3202 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3203 goto valid; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3204 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3205 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3206 invalid_ip6_arpa: |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3207 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3208 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3209 ngx_log_error(r->log_level, r->log, 0, |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3210 "invalid in-addr.arpa or ip6.arpa name in DNS response"); |
| 6372 | 3211 ngx_resolver_free(r, name.data); |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3212 return; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3213 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3214 valid: |
| 1649 | 3215 |
| 3216 if (rn == NULL || rn->query == NULL) { | |
| 3217 ngx_log_error(r->log_level, r->log, 0, | |
|
7718
8fe7ebe5adc4
Resolver: improved error messages (ticket #2024).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7566
diff
changeset
|
3218 "unexpected DNS response for %V", &name); |
| 6372 | 3219 ngx_resolver_free(r, name.data); |
| 1649 | 3220 goto failed; |
| 3221 } | |
| 3222 | |
| 3223 qident = (rn->query[0] << 8) + rn->query[1]; | |
| 3224 | |
| 3225 if (ident != qident) { | |
| 3226 ngx_log_error(r->log_level, r->log, 0, | |
|
7718
8fe7ebe5adc4
Resolver: improved error messages (ticket #2024).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7566
diff
changeset
|
3227 "wrong ident %ui in DNS response for %V, expect %ui", |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3228 ident, &name, qident); |
| 6372 | 3229 ngx_resolver_free(r, name.data); |
| 1649 | 3230 goto failed; |
| 3231 } | |
| 3232 | |
| 6372 | 3233 ngx_resolver_free(r, name.data); |
| 3234 | |
|
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
3235 if (code == 0 && nan == 0) { |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3236 code = NGX_RESOLVE_NXDOMAIN; |
|
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
3237 } |
|
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
3238 |
| 1649 | 3239 if (code) { |
| 3240 next = rn->waiting; | |
| 3241 rn->waiting = NULL; | |
| 3242 | |
| 3243 ngx_queue_remove(&rn->queue); | |
| 3244 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3245 ngx_rbtree_delete(tree, &rn->node); |
| 1649 | 3246 |
| 3247 /* unlock addr mutex */ | |
| 3248 | |
| 3249 while (next) { | |
|
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3250 ctx = next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3251 ctx->state = code; |
|
6456
c94aba230a5a
Resolver: introduced valid field in resolver responses.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6372
diff
changeset
|
3252 ctx->valid = ngx_time() + (r->valid ? r->valid : 10); |
|
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3253 next = ctx->next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3254 |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3255 ctx->handler(ctx); |
| 1649 | 3256 } |
| 3257 | |
|
5920
7420068c4d4b
Resolver: fixed use-after-free memory access.
Ruslan Ermilov <ru@nginx.com>
parents:
5820
diff
changeset
|
3258 ngx_resolver_free_node(r, rn); |
|
7420068c4d4b
Resolver: fixed use-after-free memory access.
Ruslan Ermilov <ru@nginx.com>
parents:
5820
diff
changeset
|
3259 |
| 1649 | 3260 return; |
| 3261 } | |
| 3262 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3263 i += sizeof(ngx_resolver_qs_t); |
| 1649 | 3264 |
|
6371
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3265 for (a = 0; a < nan; a++) { |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3266 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3267 start = i; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3268 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3269 while (i < n) { |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3270 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3271 if (buf[i] & 0xc0) { |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3272 i += 2; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3273 goto found; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3274 } |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3275 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3276 if (buf[i] == 0) { |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3277 i++; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3278 goto test_length; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3279 } |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3280 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3281 i += 1 + buf[i]; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3282 } |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3283 |
| 1649 | 3284 goto short_response; |
|
6371
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3285 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3286 test_length: |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3287 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3288 if (i - start < 2) { |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3289 err = "invalid name in DNS response"; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3290 goto invalid; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3291 } |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3292 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3293 found: |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3294 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3295 if (i + sizeof(ngx_resolver_an_t) >= n) { |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3296 goto short_response; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3297 } |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3298 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3299 an = (ngx_resolver_an_t *) &buf[i]; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3300 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3301 type = (an->type_hi << 8) + an->type_lo; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3302 class = (an->class_hi << 8) + an->class_lo; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3303 len = (an->len_hi << 8) + an->len_lo; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3304 ttl = (an->ttl[0] << 24) + (an->ttl[1] << 16) |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3305 + (an->ttl[2] << 8) + (an->ttl[3]); |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3306 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3307 if (class != 1) { |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3308 ngx_log_error(r->log_level, r->log, 0, |
|
7718
8fe7ebe5adc4
Resolver: improved error messages (ticket #2024).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7566
diff
changeset
|
3309 "unexpected RR class %ui in DNS response", class); |
|
6371
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3310 goto failed; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3311 } |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3312 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3313 if (ttl < 0) { |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3314 ttl = 0; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3315 } |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3316 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3317 ngx_log_debug3(NGX_LOG_DEBUG_CORE, r->log, 0, |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3318 "resolver qt:%ui cl:%ui len:%uz", |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3319 type, class, len); |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3320 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3321 i += sizeof(ngx_resolver_an_t); |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3322 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3323 switch (type) { |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3324 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3325 case NGX_RESOLVE_PTR: |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3326 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3327 goto ptr; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3328 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3329 case NGX_RESOLVE_CNAME: |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3330 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3331 break; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3332 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3333 default: |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3334 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3335 ngx_log_error(r->log_level, r->log, 0, |
|
7718
8fe7ebe5adc4
Resolver: improved error messages (ticket #2024).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7566
diff
changeset
|
3336 "unexpected RR type %ui in DNS response", type); |
|
6371
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3337 } |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3338 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3339 i += len; |
| 1649 | 3340 } |
| 3341 | |
|
6371
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3342 /* unlock addr mutex */ |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3343 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3344 ngx_log_error(r->log_level, r->log, 0, |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3345 "no PTR type in DNS response"); |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3346 return; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3347 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3348 ptr: |
| 1649 | 3349 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3350 if (ngx_resolver_copy(r, &name, buf, buf + i, buf + n) != NGX_OK) { |
|
5472
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
3351 goto failed; |
| 1649 | 3352 } |
| 3353 | |
| 3354 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver an:%V", &name); | |
| 3355 | |
|
2486
8de5dc3e7001
use length of uncompressed name
Igor Sysoev <igor@sysoev.ru>
parents:
2484
diff
changeset
|
3356 if (name.len != (size_t) rn->nlen |
|
8de5dc3e7001
use length of uncompressed name
Igor Sysoev <igor@sysoev.ru>
parents:
2484
diff
changeset
|
3357 || ngx_strncmp(name.data, rn->name, name.len) != 0) |
| 1649 | 3358 { |
|
2482
30ec8c5ac75b
fix reverse resolving cache: it stored zero length names
Igor Sysoev <igor@sysoev.ru>
parents:
2314
diff
changeset
|
3359 if (rn->nlen) { |
|
30ec8c5ac75b
fix reverse resolving cache: it stored zero length names
Igor Sysoev <igor@sysoev.ru>
parents:
2314
diff
changeset
|
3360 ngx_resolver_free(r, rn->name); |
|
30ec8c5ac75b
fix reverse resolving cache: it stored zero length names
Igor Sysoev <igor@sysoev.ru>
parents:
2314
diff
changeset
|
3361 } |
|
30ec8c5ac75b
fix reverse resolving cache: it stored zero length names
Igor Sysoev <igor@sysoev.ru>
parents:
2314
diff
changeset
|
3362 |
|
2490
1c87647b7ca5
fix building by msvc, introduced in r2487
Igor Sysoev <igor@sysoev.ru>
parents:
2487
diff
changeset
|
3363 rn->nlen = (u_short) name.len; |
| 1649 | 3364 rn->name = name.data; |
| 3365 | |
|
2486
8de5dc3e7001
use length of uncompressed name
Igor Sysoev <igor@sysoev.ru>
parents:
2484
diff
changeset
|
3366 name.data = ngx_resolver_dup(r, rn->name, name.len); |
| 1649 | 3367 if (name.data == NULL) { |
| 3368 goto failed; | |
| 3369 } | |
| 3370 } | |
| 3371 | |
| 3372 ngx_queue_remove(&rn->queue); | |
| 3373 | |
|
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
3374 rn->valid = ngx_time() + (r->valid ? r->valid : ttl); |
| 1649 | 3375 rn->expire = ngx_time() + r->expire; |
| 3376 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3377 ngx_queue_insert_head(expire_queue, &rn->queue); |
| 1649 | 3378 |
| 3379 next = rn->waiting; | |
| 3380 rn->waiting = NULL; | |
| 3381 | |
| 3382 /* unlock addr mutex */ | |
| 3383 | |
| 3384 while (next) { | |
|
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3385 ctx = next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3386 ctx->state = NGX_OK; |
|
6456
c94aba230a5a
Resolver: introduced valid field in resolver responses.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6372
diff
changeset
|
3387 ctx->valid = rn->valid; |
|
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3388 ctx->name = name; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3389 next = ctx->next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3390 |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3391 ctx->handler(ctx); |
| 1649 | 3392 } |
| 3393 | |
| 3394 ngx_resolver_free(r, name.data); | |
| 3395 | |
| 3396 return; | |
| 3397 | |
| 3398 short_response: | |
| 3399 | |
| 3400 err = "short DNS response"; | |
| 3401 | |
| 3402 invalid: | |
| 3403 | |
| 3404 /* unlock addr mutex */ | |
| 3405 | |
| 3406 ngx_log_error(r->log_level, r->log, 0, err); | |
| 3407 | |
| 3408 return; | |
| 3409 | |
| 3410 failed: | |
| 3411 | |
| 3412 /* unlock addr mutex */ | |
| 3413 | |
| 3414 return; | |
| 3415 } | |
| 3416 | |
| 3417 | |
| 3418 static ngx_resolver_node_t * | |
| 3419 ngx_resolver_lookup_name(ngx_resolver_t *r, ngx_str_t *name, uint32_t hash) | |
| 3420 { | |
| 3421 ngx_int_t rc; | |
| 3422 ngx_rbtree_node_t *node, *sentinel; | |
| 3423 ngx_resolver_node_t *rn; | |
| 3424 | |
| 3425 node = r->name_rbtree.root; | |
| 3426 sentinel = r->name_rbtree.sentinel; | |
| 3427 | |
| 3428 while (node != sentinel) { | |
| 3429 | |
| 3430 if (hash < node->key) { | |
| 3431 node = node->left; | |
| 3432 continue; | |
| 3433 } | |
| 3434 | |
| 3435 if (hash > node->key) { | |
| 3436 node = node->right; | |
| 3437 continue; | |
| 3438 } | |
| 3439 | |
| 3440 /* hash == node->key */ | |
| 3441 | |
|
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
3442 rn = ngx_resolver_node(node); |
|
4497
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
3443 |
|
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
3444 rc = ngx_memn2cmp(name->data, rn->name, name->len, rn->nlen); |
|
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
3445 |
|
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
3446 if (rc == 0) { |
|
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
3447 return rn; |
|
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
3448 } |
|
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
3449 |
|
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
3450 node = (rc < 0) ? node->left : node->right; |
| 1649 | 3451 } |
| 3452 | |
| 3453 /* not found */ | |
| 3454 | |
| 3455 return NULL; | |
| 3456 } | |
| 3457 | |
| 3458 | |
| 3459 static ngx_resolver_node_t * | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3460 ngx_resolver_lookup_srv(ngx_resolver_t *r, ngx_str_t *name, uint32_t hash) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3461 { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3462 ngx_int_t rc; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3463 ngx_rbtree_node_t *node, *sentinel; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3464 ngx_resolver_node_t *rn; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3465 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3466 node = r->srv_rbtree.root; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3467 sentinel = r->srv_rbtree.sentinel; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3468 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3469 while (node != sentinel) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3470 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3471 if (hash < node->key) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3472 node = node->left; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3473 continue; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3474 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3475 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3476 if (hash > node->key) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3477 node = node->right; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3478 continue; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3479 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3480 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3481 /* hash == node->key */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3482 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3483 rn = ngx_resolver_node(node); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3484 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3485 rc = ngx_memn2cmp(name->data, rn->name, name->len, rn->nlen); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3486 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3487 if (rc == 0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3488 return rn; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3489 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3490 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3491 node = (rc < 0) ? node->left : node->right; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3492 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3493 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3494 /* not found */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3495 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3496 return NULL; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3497 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3498 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3499 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3500 static ngx_resolver_node_t * |
| 1649 | 3501 ngx_resolver_lookup_addr(ngx_resolver_t *r, in_addr_t addr) |
| 3502 { | |
| 3503 ngx_rbtree_node_t *node, *sentinel; | |
| 3504 | |
| 3505 node = r->addr_rbtree.root; | |
| 3506 sentinel = r->addr_rbtree.sentinel; | |
| 3507 | |
| 3508 while (node != sentinel) { | |
| 3509 | |
| 3510 if (addr < node->key) { | |
| 3511 node = node->left; | |
| 3512 continue; | |
| 3513 } | |
| 3514 | |
| 3515 if (addr > node->key) { | |
| 3516 node = node->right; | |
| 3517 continue; | |
| 3518 } | |
| 3519 | |
| 3520 /* addr == node->key */ | |
| 3521 | |
|
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
3522 return ngx_resolver_node(node); |
| 1649 | 3523 } |
| 3524 | |
| 3525 /* not found */ | |
| 3526 | |
| 3527 return NULL; | |
| 3528 } | |
| 3529 | |
| 3530 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3531 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3532 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3533 static ngx_resolver_node_t * |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3534 ngx_resolver_lookup_addr6(ngx_resolver_t *r, struct in6_addr *addr, |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3535 uint32_t hash) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3536 { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3537 ngx_int_t rc; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3538 ngx_rbtree_node_t *node, *sentinel; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3539 ngx_resolver_node_t *rn; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3540 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3541 node = r->addr6_rbtree.root; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3542 sentinel = r->addr6_rbtree.sentinel; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3543 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3544 while (node != sentinel) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3545 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3546 if (hash < node->key) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3547 node = node->left; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3548 continue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3549 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3550 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3551 if (hash > node->key) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3552 node = node->right; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3553 continue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3554 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3555 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3556 /* hash == node->key */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3557 |
|
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
3558 rn = ngx_resolver_node(node); |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3559 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3560 rc = ngx_memcmp(addr, &rn->addr6, 16); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3561 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3562 if (rc == 0) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3563 return rn; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3564 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3565 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3566 node = (rc < 0) ? node->left : node->right; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3567 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3568 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3569 /* not found */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3570 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3571 return NULL; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3572 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3573 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3574 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3575 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3576 |
| 1649 | 3577 static void |
| 3578 ngx_resolver_rbtree_insert_value(ngx_rbtree_node_t *temp, | |
| 3579 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel) | |
| 3580 { | |
| 3581 ngx_rbtree_node_t **p; | |
| 3582 ngx_resolver_node_t *rn, *rn_temp; | |
| 3583 | |
| 3584 for ( ;; ) { | |
| 3585 | |
| 3586 if (node->key < temp->key) { | |
| 3587 | |
| 3588 p = &temp->left; | |
| 3589 | |
| 3590 } else if (node->key > temp->key) { | |
| 3591 | |
| 3592 p = &temp->right; | |
| 3593 | |
| 3594 } else { /* node->key == temp->key */ | |
| 3595 | |
|
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
3596 rn = ngx_resolver_node(node); |
|
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
3597 rn_temp = ngx_resolver_node(temp); |
| 1649 | 3598 |
|
3143
ab6258e18099
fix resolver cache rbtree comparison
Igor Sysoev <igor@sysoev.ru>
parents:
3139
diff
changeset
|
3599 p = (ngx_memn2cmp(rn->name, rn_temp->name, rn->nlen, rn_temp->nlen) |
|
ab6258e18099
fix resolver cache rbtree comparison
Igor Sysoev <igor@sysoev.ru>
parents:
3139
diff
changeset
|
3600 < 0) ? &temp->left : &temp->right; |
| 1649 | 3601 } |
| 3602 | |
| 3603 if (*p == sentinel) { | |
| 3604 break; | |
| 3605 } | |
| 3606 | |
| 3607 temp = *p; | |
| 3608 } | |
| 3609 | |
| 3610 *p = node; | |
| 3611 node->parent = temp; | |
| 3612 node->left = sentinel; | |
| 3613 node->right = sentinel; | |
| 3614 ngx_rbt_red(node); | |
| 3615 } | |
| 3616 | |
| 3617 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3618 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3619 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3620 static void |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3621 ngx_resolver_rbtree_insert_addr6_value(ngx_rbtree_node_t *temp, |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3622 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3623 { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3624 ngx_rbtree_node_t **p; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3625 ngx_resolver_node_t *rn, *rn_temp; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3626 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3627 for ( ;; ) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3628 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3629 if (node->key < temp->key) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3630 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3631 p = &temp->left; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3632 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3633 } else if (node->key > temp->key) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3634 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3635 p = &temp->right; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3636 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3637 } else { /* node->key == temp->key */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3638 |
|
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
3639 rn = ngx_resolver_node(node); |
|
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
3640 rn_temp = ngx_resolver_node(temp); |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3641 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3642 p = (ngx_memcmp(&rn->addr6, &rn_temp->addr6, 16) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3643 < 0) ? &temp->left : &temp->right; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3644 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3645 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3646 if (*p == sentinel) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3647 break; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3648 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3649 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3650 temp = *p; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3651 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3652 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3653 *p = node; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3654 node->parent = temp; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3655 node->left = sentinel; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3656 node->right = sentinel; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3657 ngx_rbt_red(node); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3658 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3659 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3660 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3661 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3662 |
| 1649 | 3663 static ngx_int_t |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3664 ngx_resolver_create_name_query(ngx_resolver_t *r, ngx_resolver_node_t *rn, |
|
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3665 ngx_str_t *name) |
| 1649 | 3666 { |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3667 u_char *p, *s; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3668 size_t len, nlen; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3669 ngx_uint_t ident; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3670 ngx_resolver_qs_t *qs; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3671 ngx_resolver_hdr_t *query; |
| 1649 | 3672 |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3673 nlen = name->len ? (1 + name->len + 1) : 1; |
|
3306
61bdaac6c668
fix resolving an empty name (".")
Igor Sysoev <igor@sysoev.ru>
parents:
3299
diff
changeset
|
3674 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3675 len = sizeof(ngx_resolver_hdr_t) + nlen + sizeof(ngx_resolver_qs_t); |
| 1649 | 3676 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3677 #if (NGX_HAVE_INET6) |
|
8055
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
3678 p = ngx_resolver_alloc(r, len * (r->ipv4 + r->ipv6)); |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3679 #else |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3680 p = ngx_resolver_alloc(r, len); |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3681 #endif |
| 1649 | 3682 if (p == NULL) { |
| 3683 return NGX_ERROR; | |
| 3684 } | |
| 3685 | |
| 3686 rn->qlen = (u_short) len; | |
|
8056
0422365794f7
Resolver: fixed memory leak for the "ipv4=off" case.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8055
diff
changeset
|
3687 rn->query = p; |
| 1649 | 3688 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3689 #if (NGX_HAVE_INET6) |
|
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
3690 if (r->ipv6) { |
|
8055
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
3691 rn->query6 = r->ipv4 ? (p + len) : p; |
|
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
3692 } |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3693 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3694 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3695 query = (ngx_resolver_hdr_t *) p; |
| 1649 | 3696 |
|
8055
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
3697 if (r->ipv4) { |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
3698 ident = ngx_random(); |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
3699 |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
3700 ngx_log_debug2(NGX_LOG_DEBUG_CORE, r->log, 0, |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
3701 "resolve: \"%V\" A %i", name, ident & 0xffff); |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
3702 |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
3703 query->ident_hi = (u_char) ((ident >> 8) & 0xff); |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
3704 query->ident_lo = (u_char) (ident & 0xff); |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
3705 } |
| 1649 | 3706 |
| 3707 /* recursion query */ | |
| 3708 query->flags_hi = 1; query->flags_lo = 0; | |
| 3709 | |
| 3710 /* one question */ | |
| 3711 query->nqs_hi = 0; query->nqs_lo = 1; | |
| 3712 query->nan_hi = 0; query->nan_lo = 0; | |
| 3713 query->nns_hi = 0; query->nns_lo = 0; | |
| 3714 query->nar_hi = 0; query->nar_lo = 0; | |
| 3715 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3716 p += sizeof(ngx_resolver_hdr_t) + nlen; |
| 1649 | 3717 |
| 3718 qs = (ngx_resolver_qs_t *) p; | |
| 3719 | |
| 3720 /* query type */ | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3721 qs->type_hi = 0; qs->type_lo = NGX_RESOLVE_A; |
| 1649 | 3722 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3723 /* IN query class */ |
| 1649 | 3724 qs->class_hi = 0; qs->class_lo = 1; |
| 3725 | |
| 3726 /* convert "www.example.com" to "\3www\7example\3com\0" */ | |
| 3727 | |
| 3728 len = 0; | |
| 3729 p--; | |
| 3730 *p-- = '\0'; | |
| 3731 | |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3732 if (name->len == 0) { |
|
4610
778d2cc03e22
Fixed segmentation fault in ngx_resolver_create_name_query().
Ruslan Ermilov <ru@nginx.com>
parents:
4556
diff
changeset
|
3733 return NGX_DECLINED; |
|
778d2cc03e22
Fixed segmentation fault in ngx_resolver_create_name_query().
Ruslan Ermilov <ru@nginx.com>
parents:
4556
diff
changeset
|
3734 } |
|
778d2cc03e22
Fixed segmentation fault in ngx_resolver_create_name_query().
Ruslan Ermilov <ru@nginx.com>
parents:
4556
diff
changeset
|
3735 |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3736 for (s = name->data + name->len - 1; s >= name->data; s--) { |
| 1649 | 3737 if (*s != '.') { |
| 3738 *p = *s; | |
| 3739 len++; | |
| 3740 | |
| 3741 } else { | |
|
4556
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
3742 if (len == 0 || len > 255) { |
|
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
3743 return NGX_DECLINED; |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
3744 } |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
3745 |
| 1649 | 3746 *p = (u_char) len; |
| 3747 len = 0; | |
| 3748 } | |
| 3749 | |
| 3750 p--; | |
| 3751 } | |
| 3752 | |
|
4556
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
3753 if (len == 0 || len > 255) { |
|
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
3754 return NGX_DECLINED; |
|
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
3755 } |
|
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
3756 |
| 1649 | 3757 *p = (u_char) len; |
| 3758 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3759 #if (NGX_HAVE_INET6) |
|
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
3760 if (!r->ipv6) { |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
3761 return NGX_OK; |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
3762 } |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
3763 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3764 p = rn->query6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3765 |
|
8055
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
3766 if (r->ipv4) { |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
3767 ngx_memcpy(p, rn->query, rn->qlen); |
|
2a77754cd9fe
The "ipv4=" parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
8045
diff
changeset
|
3768 } |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3769 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3770 query = (ngx_resolver_hdr_t *) p; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3771 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3772 ident = ngx_random(); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3773 |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3774 ngx_log_debug2(NGX_LOG_DEBUG_CORE, r->log, 0, |
|
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3775 "resolve: \"%V\" AAAA %i", name, ident & 0xffff); |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3776 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3777 query->ident_hi = (u_char) ((ident >> 8) & 0xff); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3778 query->ident_lo = (u_char) (ident & 0xff); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3779 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3780 p += sizeof(ngx_resolver_hdr_t) + nlen; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3781 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3782 qs = (ngx_resolver_qs_t *) p; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3783 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3784 qs->type_lo = NGX_RESOLVE_AAAA; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3785 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3786 |
| 1649 | 3787 return NGX_OK; |
| 3788 } | |
| 3789 | |
| 3790 | |
| 3791 static ngx_int_t | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3792 ngx_resolver_create_srv_query(ngx_resolver_t *r, ngx_resolver_node_t *rn, |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3793 ngx_str_t *name) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3794 { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3795 u_char *p, *s; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3796 size_t len, nlen; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3797 ngx_uint_t ident; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3798 ngx_resolver_qs_t *qs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3799 ngx_resolver_hdr_t *query; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3800 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3801 nlen = name->len ? (1 + name->len + 1) : 1; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3802 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3803 len = sizeof(ngx_resolver_hdr_t) + nlen + sizeof(ngx_resolver_qs_t); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3804 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3805 p = ngx_resolver_alloc(r, len); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3806 if (p == NULL) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3807 return NGX_ERROR; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3808 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3809 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3810 rn->qlen = (u_short) len; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3811 rn->query = p; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3812 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3813 query = (ngx_resolver_hdr_t *) p; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3814 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3815 ident = ngx_random(); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3816 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3817 ngx_log_debug2(NGX_LOG_DEBUG_CORE, r->log, 0, |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3818 "resolve: \"%V\" SRV %i", name, ident & 0xffff); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3819 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3820 query->ident_hi = (u_char) ((ident >> 8) & 0xff); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3821 query->ident_lo = (u_char) (ident & 0xff); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3822 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3823 /* recursion query */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3824 query->flags_hi = 1; query->flags_lo = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3825 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3826 /* one question */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3827 query->nqs_hi = 0; query->nqs_lo = 1; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3828 query->nan_hi = 0; query->nan_lo = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3829 query->nns_hi = 0; query->nns_lo = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3830 query->nar_hi = 0; query->nar_lo = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3831 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3832 p += sizeof(ngx_resolver_hdr_t) + nlen; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3833 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3834 qs = (ngx_resolver_qs_t *) p; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3835 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3836 /* query type */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3837 qs->type_hi = 0; qs->type_lo = NGX_RESOLVE_SRV; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3838 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3839 /* IN query class */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3840 qs->class_hi = 0; qs->class_lo = 1; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3841 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3842 /* converts "www.example.com" to "\3www\7example\3com\0" */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3843 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3844 len = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3845 p--; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3846 *p-- = '\0'; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3847 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3848 if (name->len == 0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3849 return NGX_DECLINED; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3850 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3851 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3852 for (s = name->data + name->len - 1; s >= name->data; s--) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3853 if (*s != '.') { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3854 *p = *s; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3855 len++; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3856 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3857 } else { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3858 if (len == 0 || len > 255) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3859 return NGX_DECLINED; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3860 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3861 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3862 *p = (u_char) len; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3863 len = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3864 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3865 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3866 p--; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3867 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3868 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3869 if (len == 0 || len > 255) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3870 return NGX_DECLINED; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3871 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3872 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3873 *p = (u_char) len; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3874 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3875 return NGX_OK; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3876 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3877 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3878 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3879 static ngx_int_t |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3880 ngx_resolver_create_addr_query(ngx_resolver_t *r, ngx_resolver_node_t *rn, |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3881 ngx_resolver_addr_t *addr) |
| 1649 | 3882 { |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3883 u_char *p, *d; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3884 size_t len; |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3885 in_addr_t inaddr; |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3886 ngx_int_t n; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3887 ngx_uint_t ident; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3888 ngx_resolver_hdr_t *query; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3889 struct sockaddr_in *sin; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3890 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3891 struct sockaddr_in6 *sin6; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3892 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3893 |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3894 switch (addr->sockaddr->sa_family) { |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3895 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3896 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3897 case AF_INET6: |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3898 len = sizeof(ngx_resolver_hdr_t) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3899 + 64 + sizeof(".ip6.arpa.") - 1 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3900 + sizeof(ngx_resolver_qs_t); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3901 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3902 break; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3903 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3904 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3905 default: /* AF_INET */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3906 len = sizeof(ngx_resolver_hdr_t) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3907 + sizeof(".255.255.255.255.in-addr.arpa.") - 1 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3908 + sizeof(ngx_resolver_qs_t); |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
3909 } |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3910 |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3911 p = ngx_resolver_alloc(r, len); |
| 1649 | 3912 if (p == NULL) { |
| 3913 return NGX_ERROR; | |
| 3914 } | |
| 3915 | |
| 3916 rn->query = p; | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3917 query = (ngx_resolver_hdr_t *) p; |
| 1649 | 3918 |
| 3919 ident = ngx_random(); | |
| 3920 | |
| 3921 query->ident_hi = (u_char) ((ident >> 8) & 0xff); | |
| 3922 query->ident_lo = (u_char) (ident & 0xff); | |
| 3923 | |
| 3924 /* recursion query */ | |
| 3925 query->flags_hi = 1; query->flags_lo = 0; | |
| 3926 | |
| 3927 /* one question */ | |
| 3928 query->nqs_hi = 0; query->nqs_lo = 1; | |
| 3929 query->nan_hi = 0; query->nan_lo = 0; | |
| 3930 query->nns_hi = 0; query->nns_lo = 0; | |
| 3931 query->nar_hi = 0; query->nar_lo = 0; | |
| 3932 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3933 p += sizeof(ngx_resolver_hdr_t); |
| 1649 | 3934 |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3935 switch (addr->sockaddr->sa_family) { |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3936 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3937 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3938 case AF_INET6: |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3939 sin6 = (struct sockaddr_in6 *) addr->sockaddr; |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3940 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3941 for (n = 15; n >= 0; n--) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3942 p = ngx_sprintf(p, "\1%xd\1%xd", |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3943 sin6->sin6_addr.s6_addr[n] & 0xf, |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3944 (sin6->sin6_addr.s6_addr[n] >> 4) & 0xf); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3945 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3946 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3947 p = ngx_cpymem(p, "\3ip6\4arpa\0", 10); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3948 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3949 break; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3950 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3951 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3952 default: /* AF_INET */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3953 |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3954 sin = (struct sockaddr_in *) addr->sockaddr; |
|
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3955 inaddr = ntohl(sin->sin_addr.s_addr); |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3956 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3957 for (n = 0; n < 32; n += 8) { |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3958 d = ngx_sprintf(&p[1], "%ud", (inaddr >> n) & 0xff); |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3959 *p = (u_char) (d - &p[1]); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3960 p = d; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3961 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3962 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3963 p = ngx_cpymem(p, "\7in-addr\4arpa\0", 14); |
| 1649 | 3964 } |
| 3965 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3966 /* query type "PTR", IN query class */ |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3967 p = ngx_cpymem(p, "\0\14\0\1", 4); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3968 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3969 rn->qlen = (u_short) (p - rn->query); |
| 1649 | 3970 |
| 3971 return NGX_OK; | |
| 3972 } | |
| 3973 | |
| 3974 | |
| 3975 static ngx_int_t | |
| 3976 ngx_resolver_copy(ngx_resolver_t *r, ngx_str_t *name, u_char *buf, u_char *src, | |
| 3977 u_char *last) | |
| 3978 { | |
| 3979 char *err; | |
| 3980 u_char *p, *dst; | |
|
7853
4ebe1251a8c3
Resolver: simplified ngx_resolver_copy().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7852
diff
changeset
|
3981 size_t len; |
| 1649 | 3982 ngx_uint_t i, n; |
| 3983 | |
| 3984 p = src; | |
|
7853
4ebe1251a8c3
Resolver: simplified ngx_resolver_copy().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7852
diff
changeset
|
3985 len = 0; |
| 1649 | 3986 |
| 3987 /* | |
| 3988 * compression pointers allow to create endless loop, so we set limit; | |
| 3989 * 128 pointers should be enough to store 255-byte name | |
| 3990 */ | |
| 3991 | |
| 3992 for (i = 0; i < 128; i++) { | |
| 3993 n = *p++; | |
| 3994 | |
| 3995 if (n == 0) { | |
| 3996 goto done; | |
| 3997 } | |
| 3998 | |
| 3999 if (n & 0xc0) { | |
|
7851
aa5f8825f24d
Resolver: fixed label types handling in ngx_resolver_copy().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7850
diff
changeset
|
4000 if ((n & 0xc0) != 0xc0) { |
|
aa5f8825f24d
Resolver: fixed label types handling in ngx_resolver_copy().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7850
diff
changeset
|
4001 err = "invalid label type in DNS response"; |
|
aa5f8825f24d
Resolver: fixed label types handling in ngx_resolver_copy().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7850
diff
changeset
|
4002 goto invalid; |
|
aa5f8825f24d
Resolver: fixed label types handling in ngx_resolver_copy().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7850
diff
changeset
|
4003 } |
|
aa5f8825f24d
Resolver: fixed label types handling in ngx_resolver_copy().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7850
diff
changeset
|
4004 |
|
7850
a093dd4ce154
Resolver: fixed off-by-one read in ngx_resolver_copy().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7849
diff
changeset
|
4005 if (p >= last) { |
|
a093dd4ce154
Resolver: fixed off-by-one read in ngx_resolver_copy().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7849
diff
changeset
|
4006 err = "name is out of DNS response"; |
|
a093dd4ce154
Resolver: fixed off-by-one read in ngx_resolver_copy().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7849
diff
changeset
|
4007 goto invalid; |
|
a093dd4ce154
Resolver: fixed off-by-one read in ngx_resolver_copy().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7849
diff
changeset
|
4008 } |
|
a093dd4ce154
Resolver: fixed off-by-one read in ngx_resolver_copy().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7849
diff
changeset
|
4009 |
|
2314
52987a023486
fix compression pointer for big (>255) DNS responses
Igor Sysoev <igor@sysoev.ru>
parents:
2282
diff
changeset
|
4010 n = ((n & 0x3f) << 8) + *p; |
| 1649 | 4011 p = &buf[n]; |
| 4012 | |
| 4013 } else { | |
| 4014 len += 1 + n; | |
| 4015 p = &p[n]; | |
| 4016 } | |
| 4017 | |
| 4018 if (p >= last) { | |
|
7718
8fe7ebe5adc4
Resolver: improved error messages (ticket #2024).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7566
diff
changeset
|
4019 err = "name is out of DNS response"; |
| 1649 | 4020 goto invalid; |
| 4021 } | |
| 4022 } | |
| 4023 | |
|
7718
8fe7ebe5adc4
Resolver: improved error messages (ticket #2024).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7566
diff
changeset
|
4024 err = "compression pointers loop in DNS response"; |
| 1649 | 4025 |
| 4026 invalid: | |
| 4027 | |
| 4028 ngx_log_error(r->log_level, r->log, 0, err); | |
| 4029 | |
| 4030 return NGX_ERROR; | |
| 4031 | |
| 4032 done: | |
| 4033 | |
| 4034 if (name == NULL) { | |
| 583 | 4035 return NGX_OK; |
| 4036 } | |
| 4037 | |
|
7853
4ebe1251a8c3
Resolver: simplified ngx_resolver_copy().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7852
diff
changeset
|
4038 if (len == 0) { |
|
5764
f166c521b619
Style: use ngx_str_null().
Tatsuhiko Kubo <cubicdaiya@gmail.com>
parents:
5600
diff
changeset
|
4039 ngx_str_null(name); |
|
3298
847ab5a32307
fix "PTR ." case in address resolver
Igor Sysoev <igor@sysoev.ru>
parents:
3297
diff
changeset
|
4040 return NGX_OK; |
|
847ab5a32307
fix "PTR ." case in address resolver
Igor Sysoev <igor@sysoev.ru>
parents:
3297
diff
changeset
|
4041 } |
|
847ab5a32307
fix "PTR ." case in address resolver
Igor Sysoev <igor@sysoev.ru>
parents:
3297
diff
changeset
|
4042 |
| 1649 | 4043 dst = ngx_resolver_alloc(r, len); |
| 4044 if (dst == NULL) { | |
| 4045 return NGX_ERROR; | |
| 4046 } | |
| 4047 | |
| 4048 name->data = dst; | |
| 4049 | |
| 4050 for ( ;; ) { | |
|
7852
771743838cbd
Resolver: reworked ngx_resolver_copy() copy loop.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7851
diff
changeset
|
4051 n = *src++; |
|
771743838cbd
Resolver: reworked ngx_resolver_copy() copy loop.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7851
diff
changeset
|
4052 |
|
771743838cbd
Resolver: reworked ngx_resolver_copy() copy loop.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7851
diff
changeset
|
4053 if (n == 0) { |
|
7853
4ebe1251a8c3
Resolver: simplified ngx_resolver_copy().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7852
diff
changeset
|
4054 name->len = dst - name->data - 1; |
|
7852
771743838cbd
Resolver: reworked ngx_resolver_copy() copy loop.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7851
diff
changeset
|
4055 return NGX_OK; |
|
771743838cbd
Resolver: reworked ngx_resolver_copy() copy loop.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7851
diff
changeset
|
4056 } |
|
771743838cbd
Resolver: reworked ngx_resolver_copy() copy loop.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7851
diff
changeset
|
4057 |
|
4267
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
4058 if (n & 0xc0) { |
|
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
4059 n = ((n & 0x3f) << 8) + *src; |
|
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
4060 src = &buf[n]; |
|
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
4061 |
|
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
4062 } else { |
|
5479
c0d6eae5a1c5
Resolver: lookups are case-insensitive.
Ruslan Ermilov <ru@nginx.com>
parents:
5478
diff
changeset
|
4063 ngx_strlow(dst, src, n); |
| 1649 | 4064 dst += n; |
| 4065 src += n; | |
|
7853
4ebe1251a8c3
Resolver: simplified ngx_resolver_copy().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7852
diff
changeset
|
4066 *dst++ = '.'; |
| 1649 | 4067 } |
| 4068 } | |
| 4069 } | |
| 4070 | |
| 4071 | |
|
7051
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4072 static ngx_int_t |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4073 ngx_resolver_set_timeout(ngx_resolver_t *r, ngx_resolver_ctx_t *ctx) |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4074 { |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4075 if (ctx->event || ctx->timeout == 0) { |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4076 return NGX_OK; |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4077 } |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4078 |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4079 ctx->event = ngx_resolver_calloc(r, sizeof(ngx_event_t)); |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4080 if (ctx->event == NULL) { |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4081 return NGX_ERROR; |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4082 } |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4083 |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4084 ctx->event->handler = ngx_resolver_timeout_handler; |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4085 ctx->event->data = ctx; |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4086 ctx->event->log = r->log; |
|
7052
70e65bf8dfd7
Resolver: cancelable resend timer event.
Ruslan Ermilov <ru@nginx.com>
parents:
7051
diff
changeset
|
4087 ctx->event->cancelable = ctx->cancelable; |
|
7051
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4088 ctx->ident = -1; |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4089 |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4090 ngx_add_timer(ctx->event, ctx->timeout); |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4091 |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4092 return NGX_OK; |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4093 } |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4094 |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4095 |
| 1649 | 4096 static void |
| 4097 ngx_resolver_timeout_handler(ngx_event_t *ev) | |
| 4098 { | |
|
6348
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
4099 ngx_resolver_ctx_t *ctx; |
|
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
4100 |
|
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
4101 ctx = ev->data; |
|
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
4102 |
|
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
4103 ctx->state = NGX_RESOLVE_TIMEDOUT; |
|
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
4104 |
|
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
4105 ctx->handler(ctx); |
| 1649 | 4106 } |
| 4107 | |
| 4108 | |
| 4109 static void | |
| 4110 ngx_resolver_free_node(ngx_resolver_t *r, ngx_resolver_node_t *rn) | |
| 4111 { | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4112 ngx_uint_t i; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4113 |
| 1649 | 4114 /* lock alloc mutex */ |
| 4115 | |
| 4116 if (rn->query) { | |
| 4117 ngx_resolver_free_locked(r, rn->query); | |
| 4118 } | |
| 4119 | |
| 4120 if (rn->name) { | |
| 4121 ngx_resolver_free_locked(r, rn->name); | |
| 4122 } | |
| 4123 | |
| 4124 if (rn->cnlen) { | |
| 4125 ngx_resolver_free_locked(r, rn->u.cname); | |
| 4126 } | |
| 4127 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4128 if (rn->naddrs > 1 && rn->naddrs != (u_short) -1) { |
| 1649 | 4129 ngx_resolver_free_locked(r, rn->u.addrs); |
| 4130 } | |
| 4131 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4132 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4133 if (rn->naddrs6 > 1 && rn->naddrs6 != (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4134 ngx_resolver_free_locked(r, rn->u6.addrs6); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4135 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4136 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4137 |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4138 if (rn->nsrvs) { |
|
6860
f18c285c2e59
Win32: fixed some warnings reported by Borland C.
Maxim Dounin <mdounin@mdounin.ru>
parents:
6847
diff
changeset
|
4139 for (i = 0; i < (ngx_uint_t) rn->nsrvs; i++) { |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4140 if (rn->u.srvs[i].name.data) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4141 ngx_resolver_free_locked(r, rn->u.srvs[i].name.data); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4142 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4143 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4144 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4145 ngx_resolver_free_locked(r, rn->u.srvs); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4146 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4147 |
| 1649 | 4148 ngx_resolver_free_locked(r, rn); |
| 4149 | |
| 4150 /* unlock alloc mutex */ | |
| 4151 } | |
| 4152 | |
| 4153 | |
| 4154 static void * | |
| 4155 ngx_resolver_alloc(ngx_resolver_t *r, size_t size) | |
| 4156 { | |
| 4157 u_char *p; | |
| 4158 | |
| 4159 /* lock alloc mutex */ | |
| 4160 | |
| 4161 p = ngx_alloc(size, r->log); | |
| 4162 | |
| 4163 /* unlock alloc mutex */ | |
| 4164 | |
| 4165 return p; | |
| 4166 } | |
| 4167 | |
| 4168 | |
| 1903 | 4169 static void * |
| 1649 | 4170 ngx_resolver_calloc(ngx_resolver_t *r, size_t size) |
| 4171 { | |
| 4172 u_char *p; | |
| 4173 | |
| 4174 p = ngx_resolver_alloc(r, size); | |
| 4175 | |
| 4176 if (p) { | |
| 4177 ngx_memzero(p, size); | |
| 4178 } | |
| 4179 | |
| 4180 return p; | |
| 4181 } | |
| 4182 | |
| 4183 | |
| 4184 static void | |
| 4185 ngx_resolver_free(ngx_resolver_t *r, void *p) | |
| 4186 { | |
| 4187 /* lock alloc mutex */ | |
| 4188 | |
| 4189 ngx_free(p); | |
| 4190 | |
| 4191 /* unlock alloc mutex */ | |
| 4192 } | |
| 4193 | |
| 4194 | |
| 4195 static void | |
| 4196 ngx_resolver_free_locked(ngx_resolver_t *r, void *p) | |
| 4197 { | |
| 4198 ngx_free(p); | |
| 4199 } | |
| 4200 | |
| 4201 | |
| 4202 static void * | |
| 4203 ngx_resolver_dup(ngx_resolver_t *r, void *src, size_t size) | |
| 4204 { | |
| 4205 void *dst; | |
| 4206 | |
| 4207 dst = ngx_resolver_alloc(r, size); | |
| 4208 | |
| 4209 if (dst == NULL) { | |
| 4210 return dst; | |
| 4211 } | |
| 4212 | |
| 4213 ngx_memcpy(dst, src, size); | |
| 4214 | |
| 4215 return dst; | |
| 4216 } | |
| 4217 | |
| 4218 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4219 static ngx_resolver_addr_t * |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4220 ngx_resolver_export(ngx_resolver_t *r, ngx_resolver_node_t *rn, |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
4221 ngx_uint_t rotate) |
|
4871
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4222 { |
|
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4223 ngx_uint_t d, i, j, n; |
|
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4224 in_addr_t *addr; |
|
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4225 ngx_sockaddr_t *sockaddr; |
|
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4226 struct sockaddr_in *sin; |
|
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4227 ngx_resolver_addr_t *dst; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4228 #if (NGX_HAVE_INET6) |
|
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4229 struct in6_addr *addr6; |
|
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4230 struct sockaddr_in6 *sin6; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4231 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4232 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4233 n = rn->naddrs; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4234 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4235 n += rn->naddrs6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4236 #endif |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
4237 |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4238 dst = ngx_resolver_calloc(r, n * sizeof(ngx_resolver_addr_t)); |
|
4892
063ac68d89dc
Resolver: added missing memory allocation error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4871
diff
changeset
|
4239 if (dst == NULL) { |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
4240 return NULL; |
|
4892
063ac68d89dc
Resolver: added missing memory allocation error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4871
diff
changeset
|
4241 } |
|
063ac68d89dc
Resolver: added missing memory allocation error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4871
diff
changeset
|
4242 |
|
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4243 sockaddr = ngx_resolver_calloc(r, n * sizeof(ngx_sockaddr_t)); |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4244 if (sockaddr == NULL) { |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
4245 ngx_resolver_free(r, dst); |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
4246 return NULL; |
|
4871
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4247 } |
|
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4248 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4249 i = 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4250 d = rotate ? ngx_random() % n : 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4251 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4252 if (rn->naddrs) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4253 j = rotate ? ngx_random() % rn->naddrs : 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4254 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4255 addr = (rn->naddrs == 1) ? &rn->u.addr : rn->u.addrs; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4256 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4257 do { |
|
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4258 sin = &sockaddr[d].sockaddr_in; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4259 sin->sin_family = AF_INET; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4260 sin->sin_addr.s_addr = addr[j++]; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4261 dst[d].sockaddr = (struct sockaddr *) sin; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4262 dst[d++].socklen = sizeof(struct sockaddr_in); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4263 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4264 if (d == n) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4265 d = 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4266 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4267 |
|
6860
f18c285c2e59
Win32: fixed some warnings reported by Borland C.
Maxim Dounin <mdounin@mdounin.ru>
parents:
6847
diff
changeset
|
4268 if (j == (ngx_uint_t) rn->naddrs) { |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4269 j = 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4270 } |
|
6860
f18c285c2e59
Win32: fixed some warnings reported by Borland C.
Maxim Dounin <mdounin@mdounin.ru>
parents:
6847
diff
changeset
|
4271 } while (++i < (ngx_uint_t) rn->naddrs); |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
4272 } |
|
4871
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4273 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4274 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4275 if (rn->naddrs6) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4276 j = rotate ? ngx_random() % rn->naddrs6 : 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4277 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4278 addr6 = (rn->naddrs6 == 1) ? &rn->u6.addr6 : rn->u6.addrs6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4279 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4280 do { |
|
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4281 sin6 = &sockaddr[d].sockaddr_in6; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4282 sin6->sin6_family = AF_INET6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4283 ngx_memcpy(sin6->sin6_addr.s6_addr, addr6[j++].s6_addr, 16); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4284 dst[d].sockaddr = (struct sockaddr *) sin6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4285 dst[d++].socklen = sizeof(struct sockaddr_in6); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4286 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4287 if (d == n) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4288 d = 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4289 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4290 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4291 if (j == rn->naddrs6) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4292 j = 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4293 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4294 } while (++i < n); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4295 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4296 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4297 |
|
4871
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4298 return dst; |
|
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4299 } |
|
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4300 |
|
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4301 |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4302 static void |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4303 ngx_resolver_report_srv(ngx_resolver_t *r, ngx_resolver_ctx_t *ctx) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4304 { |
|
6460
034329824dd3
Win32: fixed build after 384154fc634f.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6458
diff
changeset
|
4305 ngx_uint_t naddrs, nsrvs, nw, i, j, k, l, m, n, w; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4306 ngx_resolver_addr_t *addrs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4307 ngx_resolver_srv_name_t *srvs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4308 |
|
7048
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
4309 srvs = ctx->srvs; |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
4310 nsrvs = ctx->nsrvs; |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
4311 |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4312 naddrs = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4313 |
|
7048
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
4314 for (i = 0; i < nsrvs; i++) { |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
4315 if (srvs[i].state == NGX_ERROR) { |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
4316 ctx->state = NGX_ERROR; |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
4317 ctx->valid = ngx_time() + (r->valid ? r->valid : 10); |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
4318 |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
4319 ctx->handler(ctx); |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
4320 return; |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
4321 } |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
4322 |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
4323 naddrs += srvs[i].naddrs; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4324 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4325 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4326 if (naddrs == 0) { |
|
7428
cbc5dee8d5d2
Resolver: report SRV resolve failure if all A resolves failed.
Roman Arutyunyan <arut@nginx.com>
parents:
7312
diff
changeset
|
4327 ctx->state = srvs[0].state; |
|
cbc5dee8d5d2
Resolver: report SRV resolve failure if all A resolves failed.
Roman Arutyunyan <arut@nginx.com>
parents:
7312
diff
changeset
|
4328 |
|
cbc5dee8d5d2
Resolver: report SRV resolve failure if all A resolves failed.
Roman Arutyunyan <arut@nginx.com>
parents:
7312
diff
changeset
|
4329 for (i = 0; i < nsrvs; i++) { |
|
cbc5dee8d5d2
Resolver: report SRV resolve failure if all A resolves failed.
Roman Arutyunyan <arut@nginx.com>
parents:
7312
diff
changeset
|
4330 if (srvs[i].state == NGX_RESOLVE_NXDOMAIN) { |
|
cbc5dee8d5d2
Resolver: report SRV resolve failure if all A resolves failed.
Roman Arutyunyan <arut@nginx.com>
parents:
7312
diff
changeset
|
4331 ctx->state = NGX_RESOLVE_NXDOMAIN; |
|
cbc5dee8d5d2
Resolver: report SRV resolve failure if all A resolves failed.
Roman Arutyunyan <arut@nginx.com>
parents:
7312
diff
changeset
|
4332 break; |
|
cbc5dee8d5d2
Resolver: report SRV resolve failure if all A resolves failed.
Roman Arutyunyan <arut@nginx.com>
parents:
7312
diff
changeset
|
4333 } |
|
cbc5dee8d5d2
Resolver: report SRV resolve failure if all A resolves failed.
Roman Arutyunyan <arut@nginx.com>
parents:
7312
diff
changeset
|
4334 } |
|
cbc5dee8d5d2
Resolver: report SRV resolve failure if all A resolves failed.
Roman Arutyunyan <arut@nginx.com>
parents:
7312
diff
changeset
|
4335 |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4336 ctx->valid = ngx_time() + (r->valid ? r->valid : 10); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4337 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4338 ctx->handler(ctx); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4339 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4340 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4341 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4342 addrs = ngx_resolver_calloc(r, naddrs * sizeof(ngx_resolver_addr_t)); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4343 if (addrs == NULL) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4344 ctx->state = NGX_ERROR; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4345 ctx->valid = ngx_time() + (r->valid ? r->valid : 10); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4346 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4347 ctx->handler(ctx); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4348 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4349 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4350 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4351 i = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4352 n = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4353 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4354 do { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4355 nw = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4356 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4357 for (j = i; j < nsrvs; j++) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4358 if (srvs[j].priority != srvs[i].priority) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4359 break; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4360 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4361 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4362 nw += srvs[j].naddrs * srvs[j].weight; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4363 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4364 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4365 if (nw == 0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4366 goto next_srv; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4367 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4368 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4369 w = ngx_random() % nw; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4370 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4371 for (k = i; k < j; k++) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4372 if (w < srvs[k].naddrs * srvs[k].weight) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4373 break; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4374 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4375 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4376 w -= srvs[k].naddrs * srvs[k].weight; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4377 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4378 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4379 for (l = i; l < j; l++) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4380 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4381 for (m = 0; m < srvs[k].naddrs; m++) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4382 addrs[n].socklen = srvs[k].addrs[m].socklen; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4383 addrs[n].sockaddr = srvs[k].addrs[m].sockaddr; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4384 addrs[n].name = srvs[k].name; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4385 addrs[n].priority = srvs[k].priority; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4386 addrs[n].weight = srvs[k].weight; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4387 n++; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4388 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4389 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4390 if (++k == j) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4391 k = i; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4392 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4393 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4394 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4395 next_srv: |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4396 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4397 i = j; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4398 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4399 } while (i < ctx->nsrvs); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4400 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4401 ctx->state = NGX_OK; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4402 ctx->addrs = addrs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4403 ctx->naddrs = naddrs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4404 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4405 ctx->handler(ctx); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4406 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4407 ngx_resolver_free(r, addrs); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4408 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4409 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4410 |
| 1649 | 4411 char * |
| 4412 ngx_resolver_strerror(ngx_int_t err) | |
| 4413 { | |
| 4414 static char *errors[] = { | |
| 4415 "Format error", /* FORMERR */ | |
| 4416 "Server failure", /* SERVFAIL */ | |
| 4417 "Host not found", /* NXDOMAIN */ | |
| 4418 "Unimplemented", /* NOTIMP */ | |
| 4419 "Operation refused" /* REFUSED */ | |
| 4420 }; | |
| 4421 | |
| 4422 if (err > 0 && err < 6) { | |
| 4423 return errors[err - 1]; | |
| 4424 } | |
| 4425 | |
| 4426 if (err == NGX_RESOLVE_TIMEDOUT) { | |
| 4427 return "Operation timed out"; | |
| 4428 } | |
| 4429 | |
| 4430 return "Unknown error"; | |
| 4431 } | |
| 4432 | |
| 4433 | |
|
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4434 static u_char * |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4435 ngx_resolver_log_error(ngx_log_t *log, u_char *buf, size_t len) |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4436 { |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4437 u_char *p; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4438 ngx_resolver_connection_t *rec; |
|
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4439 |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4440 p = buf; |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4441 |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4442 if (log->action) { |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4443 p = ngx_snprintf(buf, len, " while %s", log->action); |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4444 len -= p - buf; |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4445 } |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4446 |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4447 rec = log->data; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4448 |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4449 if (rec) { |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4450 p = ngx_snprintf(p, len, ", resolver: %V", &rec->server); |
|
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4451 } |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4452 |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4453 return p; |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4454 } |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4455 |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4456 |
|
6922
a72886067bbb
Added missing static specifiers.
Eran Kornblau <erankor@gmail.com>
parents:
6860
diff
changeset
|
4457 static ngx_int_t |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4458 ngx_udp_connect(ngx_resolver_connection_t *rec) |
| 1649 | 4459 { |
| 4460 int rc; | |
| 4461 ngx_int_t event; | |
| 4462 ngx_event_t *rev, *wev; | |
| 4463 ngx_socket_t s; | |
| 4464 ngx_connection_t *c; | |
| 4465 | |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4466 s = ngx_socket(rec->sockaddr->sa_family, SOCK_DGRAM, 0); |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4467 |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4468 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, &rec->log, 0, "UDP socket %d", s); |
| 583 | 4469 |
|
5360
3d2d3e1cf427
Win32: MinGW GCC compatibility.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4892
diff
changeset
|
4470 if (s == (ngx_socket_t) -1) { |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4471 ngx_log_error(NGX_LOG_ALERT, &rec->log, ngx_socket_errno, |
| 583 | 4472 ngx_socket_n " failed"); |
| 4473 return NGX_ERROR; | |
| 4474 } | |
| 4475 | |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4476 c = ngx_get_connection(s, &rec->log); |
| 583 | 4477 |
| 4478 if (c == NULL) { | |
| 4479 if (ngx_close_socket(s) == -1) { | |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4480 ngx_log_error(NGX_LOG_ALERT, &rec->log, ngx_socket_errno, |
|
7290
91ea68dd1501
Added missing space after ngx_close_socket_n.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7276
diff
changeset
|
4481 ngx_close_socket_n " failed"); |
| 583 | 4482 } |
| 4483 | |
| 4484 return NGX_ERROR; | |
| 4485 } | |
| 4486 | |
| 1649 | 4487 if (ngx_nonblocking(s) == -1) { |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4488 ngx_log_error(NGX_LOG_ALERT, &rec->log, ngx_socket_errno, |
| 1649 | 4489 ngx_nonblocking_n " failed"); |
| 4490 | |
|
5582
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4491 goto failed; |
| 1649 | 4492 } |
| 4493 | |
| 583 | 4494 rev = c->read; |
| 4495 wev = c->write; | |
| 4496 | |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4497 rev->log = &rec->log; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4498 wev->log = &rec->log; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4499 |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4500 rec->udp = c; |
| 583 | 4501 |
| 4502 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1); | |
| 4503 | |
|
7820
fdc3d40979b0
Introduced the "keepalive_time" directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7808
diff
changeset
|
4504 c->start_time = ngx_current_msec; |
|
fdc3d40979b0
Introduced the "keepalive_time" directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7808
diff
changeset
|
4505 |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4506 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, &rec->log, 0, |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4507 "connect to %V, fd:%d #%uA", &rec->server, s, c->number); |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4508 |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4509 rc = connect(s, rec->sockaddr, rec->socklen); |
| 1649 | 4510 |
|
6125
4dc8e7b62216
Removed the obsolete aio module.
Ruslan Ermilov <ru@nginx.com>
parents:
5921
diff
changeset
|
4511 /* TODO: iocp */ |
| 583 | 4512 |
| 4513 if (rc == -1) { | |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4514 ngx_log_error(NGX_LOG_CRIT, &rec->log, ngx_socket_errno, |
|
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4515 "connect() failed"); |
| 583 | 4516 |
|
5582
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4517 goto failed; |
| 583 | 4518 } |
| 4519 | |
| 1649 | 4520 /* UDP sockets are always ready to write */ |
| 4521 wev->ready = 1; | |
| 4522 | |
|
6126
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
4523 event = (ngx_event_flags & NGX_USE_CLEAR_EVENT) ? |
|
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
4524 /* kqueue, epoll */ NGX_CLEAR_EVENT: |
|
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
4525 /* select, poll, /dev/poll */ NGX_LEVEL_EVENT; |
|
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
4526 /* eventport event type has no meaning: oneshot only */ |
|
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
4527 |
|
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
4528 if (ngx_add_event(rev, NGX_READ_EVENT, event) != NGX_OK) { |
|
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
4529 goto failed; |
| 583 | 4530 } |
| 4531 | |
| 4532 return NGX_OK; | |
|
5582
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4533 |
|
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4534 failed: |
|
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4535 |
|
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4536 ngx_close_connection(c); |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4537 rec->udp = NULL; |
|
5582
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4538 |
|
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4539 return NGX_ERROR; |
| 583 | 4540 } |
| 6367 | 4541 |
| 4542 | |
|
6922
a72886067bbb
Added missing static specifiers.
Eran Kornblau <erankor@gmail.com>
parents:
6860
diff
changeset
|
4543 static ngx_int_t |
| 6367 | 4544 ngx_tcp_connect(ngx_resolver_connection_t *rec) |
| 4545 { | |
| 4546 int rc; | |
| 4547 ngx_int_t event; | |
| 4548 ngx_err_t err; | |
| 4549 ngx_uint_t level; | |
| 4550 ngx_socket_t s; | |
| 4551 ngx_event_t *rev, *wev; | |
| 4552 ngx_connection_t *c; | |
| 4553 | |
| 4554 s = ngx_socket(rec->sockaddr->sa_family, SOCK_STREAM, 0); | |
| 4555 | |
| 4556 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, &rec->log, 0, "TCP socket %d", s); | |
| 4557 | |
| 4558 if (s == (ngx_socket_t) -1) { | |
| 4559 ngx_log_error(NGX_LOG_ALERT, &rec->log, ngx_socket_errno, | |
| 4560 ngx_socket_n " failed"); | |
| 4561 return NGX_ERROR; | |
| 4562 } | |
| 4563 | |
| 4564 c = ngx_get_connection(s, &rec->log); | |
| 4565 | |
| 4566 if (c == NULL) { | |
| 4567 if (ngx_close_socket(s) == -1) { | |
| 4568 ngx_log_error(NGX_LOG_ALERT, &rec->log, ngx_socket_errno, | |
|
7290
91ea68dd1501
Added missing space after ngx_close_socket_n.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7276
diff
changeset
|
4569 ngx_close_socket_n " failed"); |
| 6367 | 4570 } |
| 4571 | |
| 4572 return NGX_ERROR; | |
| 4573 } | |
| 4574 | |
| 4575 if (ngx_nonblocking(s) == -1) { | |
| 4576 ngx_log_error(NGX_LOG_ALERT, &rec->log, ngx_socket_errno, | |
| 4577 ngx_nonblocking_n " failed"); | |
| 4578 | |
| 4579 goto failed; | |
| 4580 } | |
| 4581 | |
| 4582 rev = c->read; | |
| 4583 wev = c->write; | |
| 4584 | |
| 4585 rev->log = &rec->log; | |
| 4586 wev->log = &rec->log; | |
| 4587 | |
| 4588 rec->tcp = c; | |
| 4589 | |
| 4590 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1); | |
| 4591 | |
|
7820
fdc3d40979b0
Introduced the "keepalive_time" directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7808
diff
changeset
|
4592 c->start_time = ngx_current_msec; |
|
fdc3d40979b0
Introduced the "keepalive_time" directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7808
diff
changeset
|
4593 |
| 6367 | 4594 if (ngx_add_conn) { |
| 4595 if (ngx_add_conn(c) == NGX_ERROR) { | |
| 4596 goto failed; | |
| 4597 } | |
| 4598 } | |
| 4599 | |
| 4600 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, &rec->log, 0, | |
| 4601 "connect to %V, fd:%d #%uA", &rec->server, s, c->number); | |
| 4602 | |
| 4603 rc = connect(s, rec->sockaddr, rec->socklen); | |
| 4604 | |
| 4605 if (rc == -1) { | |
| 4606 err = ngx_socket_errno; | |
| 4607 | |
| 4608 | |
| 4609 if (err != NGX_EINPROGRESS | |
| 4610 #if (NGX_WIN32) | |
| 4611 /* Winsock returns WSAEWOULDBLOCK (NGX_EAGAIN) */ | |
| 4612 && err != NGX_EAGAIN | |
| 4613 #endif | |
| 4614 ) | |
| 4615 { | |
| 4616 if (err == NGX_ECONNREFUSED | |
| 4617 #if (NGX_LINUX) | |
| 4618 /* | |
| 4619 * Linux returns EAGAIN instead of ECONNREFUSED | |
| 4620 * for unix sockets if listen queue is full | |
| 4621 */ | |
| 4622 || err == NGX_EAGAIN | |
| 4623 #endif | |
| 4624 || err == NGX_ECONNRESET | |
| 4625 || err == NGX_ENETDOWN | |
| 4626 || err == NGX_ENETUNREACH | |
| 4627 || err == NGX_EHOSTDOWN | |
|
9228
c363ad6b3b23
Adjusted logging level of ENOENT connect() errors.
Maxim Dounin <mdounin@mdounin.ru>
parents:
8056
diff
changeset
|
4628 || err == NGX_EHOSTUNREACH |
|
c363ad6b3b23
Adjusted logging level of ENOENT connect() errors.
Maxim Dounin <mdounin@mdounin.ru>
parents:
8056
diff
changeset
|
4629 || err == NGX_ENOENT) |
| 6367 | 4630 { |
| 4631 level = NGX_LOG_ERR; | |
| 4632 | |
| 4633 } else { | |
| 4634 level = NGX_LOG_CRIT; | |
| 4635 } | |
| 4636 | |
| 7275 | 4637 ngx_log_error(level, &rec->log, err, "connect() to %V failed", |
| 6367 | 4638 &rec->server); |
| 4639 | |
| 4640 ngx_close_connection(c); | |
| 4641 rec->tcp = NULL; | |
| 4642 | |
| 4643 return NGX_ERROR; | |
| 4644 } | |
| 4645 } | |
| 4646 | |
| 4647 if (ngx_add_conn) { | |
| 4648 if (rc == -1) { | |
| 4649 | |
| 4650 /* NGX_EINPROGRESS */ | |
| 4651 | |
| 4652 return NGX_AGAIN; | |
| 4653 } | |
| 4654 | |
| 4655 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, &rec->log, 0, "connected"); | |
| 4656 | |
| 4657 wev->ready = 1; | |
| 4658 | |
| 4659 return NGX_OK; | |
| 4660 } | |
| 4661 | |
| 4662 if (ngx_event_flags & NGX_USE_IOCP_EVENT) { | |
| 4663 | |
| 4664 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, &rec->log, ngx_socket_errno, | |
| 4665 "connect(): %d", rc); | |
| 4666 | |
| 4667 if (ngx_blocking(s) == -1) { | |
| 4668 ngx_log_error(NGX_LOG_ALERT, &rec->log, ngx_socket_errno, | |
| 4669 ngx_blocking_n " failed"); | |
| 4670 goto failed; | |
| 4671 } | |
| 4672 | |
| 4673 /* | |
| 4674 * FreeBSD's aio allows to post an operation on non-connected socket. | |
| 4675 * NT does not support it. | |
| 4676 * | |
| 4677 * TODO: check in Win32, etc. As workaround we can use NGX_ONESHOT_EVENT | |
| 4678 */ | |
| 4679 | |
| 4680 rev->ready = 1; | |
| 4681 wev->ready = 1; | |
| 4682 | |
| 4683 return NGX_OK; | |
| 4684 } | |
| 4685 | |
| 4686 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) { | |
| 4687 | |
| 4688 /* kqueue */ | |
| 4689 | |
| 4690 event = NGX_CLEAR_EVENT; | |
| 4691 | |
| 4692 } else { | |
| 4693 | |
| 4694 /* select, poll, /dev/poll */ | |
| 4695 | |
| 4696 event = NGX_LEVEL_EVENT; | |
| 4697 } | |
| 4698 | |
| 4699 if (ngx_add_event(rev, NGX_READ_EVENT, event) != NGX_OK) { | |
| 4700 goto failed; | |
| 4701 } | |
| 4702 | |
| 4703 if (rc == -1) { | |
| 4704 | |
| 4705 /* NGX_EINPROGRESS */ | |
| 4706 | |
| 4707 if (ngx_add_event(wev, NGX_WRITE_EVENT, event) != NGX_OK) { | |
| 4708 goto failed; | |
| 4709 } | |
| 4710 | |
| 4711 return NGX_AGAIN; | |
| 4712 } | |
| 4713 | |
| 4714 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, &rec->log, 0, "connected"); | |
| 4715 | |
| 4716 wev->ready = 1; | |
| 4717 | |
| 4718 return NGX_OK; | |
| 4719 | |
| 4720 failed: | |
| 4721 | |
| 4722 ngx_close_connection(c); | |
| 4723 rec->tcp = NULL; | |
| 4724 | |
| 4725 return NGX_ERROR; | |
| 4726 } | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4727 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4728 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4729 static ngx_int_t |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4730 ngx_resolver_cmp_srvs(const void *one, const void *two) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4731 { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4732 ngx_int_t p1, p2; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4733 ngx_resolver_srv_t *first, *second; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4734 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4735 first = (ngx_resolver_srv_t *) one; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4736 second = (ngx_resolver_srv_t *) two; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4737 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4738 p1 = first->priority; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4739 p2 = second->priority; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4740 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4741 return p1 - p2; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4742 } |