Mercurial > hg > nginx
annotate src/core/ngx_resolver.c @ 7174:84e53e4735a4
Retain CAP_NET_RAW capability for transparent proxying.
The capability is retained automatically in unprivileged worker processes after
changing UID if transparent proxying is enabled at least once in nginx
configuration.
The feature is only available in Linux.
| author | Roman Arutyunyan <arut@nginx.com> |
|---|---|
| date | Wed, 13 Dec 2017 20:40:53 +0300 |
| parents | 70e65bf8dfd7 |
| children | e15bf978447e |
| 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 | |
|
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
54 #define ngx_resolver_node(n) \ |
|
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
55 (ngx_resolver_node_t *) \ |
|
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
56 ((u_char *) (n) - offsetof(ngx_resolver_node_t, node)) |
|
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
57 |
|
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
58 |
|
6922
a72886067bbb
Added missing static specifiers.
Eran Kornblau <erankor@gmail.com>
parents:
6860
diff
changeset
|
59 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
|
60 static ngx_int_t ngx_tcp_connect(ngx_resolver_connection_t *rec); |
| 1649 | 61 |
| 62 | |
| 1906 | 63 static void ngx_resolver_cleanup(void *data); |
| 64 static void ngx_resolver_cleanup_tree(ngx_resolver_t *r, ngx_rbtree_t *tree); | |
| 1649 | 65 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
|
66 ngx_resolver_ctx_t *ctx, ngx_str_t *name); |
| 1649 | 67 static void ngx_resolver_expire(ngx_resolver_t *r, ngx_rbtree_t *tree, |
| 68 ngx_queue_t *queue); | |
| 69 static ngx_int_t ngx_resolver_send_query(ngx_resolver_t *r, | |
| 70 ngx_resolver_node_t *rn); | |
| 6367 | 71 static ngx_int_t ngx_resolver_send_udp_query(ngx_resolver_t *r, |
| 72 ngx_resolver_connection_t *rec, u_char *query, u_short qlen); | |
| 73 static ngx_int_t ngx_resolver_send_tcp_query(ngx_resolver_t *r, | |
| 74 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
|
75 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
|
76 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
|
77 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
|
78 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
|
79 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
|
80 ngx_resolver_node_t *rn, ngx_resolver_addr_t *addr); |
| 1649 | 81 static void ngx_resolver_resend_handler(ngx_event_t *ev); |
| 82 static time_t ngx_resolver_resend(ngx_resolver_t *r, ngx_rbtree_t *tree, | |
| 83 ngx_queue_t *queue); | |
|
6196
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
84 static ngx_uint_t ngx_resolver_resend_empty(ngx_resolver_t *r); |
| 6367 | 85 static void ngx_resolver_udp_read(ngx_event_t *rev); |
| 86 static void ngx_resolver_tcp_write(ngx_event_t *wev); | |
| 87 static void ngx_resolver_tcp_read(ngx_event_t *rev); | |
| 1649 | 88 static void ngx_resolver_process_response(ngx_resolver_t *r, u_char *buf, |
| 6367 | 89 size_t n, ngx_uint_t tcp); |
| 1649 | 90 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
|
91 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t qtype, |
| 6367 | 92 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
|
93 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
|
94 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
|
95 ngx_uint_t trunc, ngx_uint_t ans); |
| 1649 | 96 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
|
97 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan); |
| 1649 | 98 static ngx_resolver_node_t *ngx_resolver_lookup_name(ngx_resolver_t *r, |
| 99 ngx_str_t *name, uint32_t hash); | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
100 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
|
101 ngx_str_t *name, uint32_t hash); |
| 1649 | 102 static ngx_resolver_node_t *ngx_resolver_lookup_addr(ngx_resolver_t *r, |
| 103 in_addr_t addr); | |
| 104 static void ngx_resolver_rbtree_insert_value(ngx_rbtree_node_t *temp, | |
| 105 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel); | |
| 106 static ngx_int_t ngx_resolver_copy(ngx_resolver_t *r, ngx_str_t *name, | |
| 107 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
|
108 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
|
109 ngx_resolver_ctx_t *ctx); |
| 1649 | 110 static void ngx_resolver_timeout_handler(ngx_event_t *ev); |
| 111 static void ngx_resolver_free_node(ngx_resolver_t *r, ngx_resolver_node_t *rn); | |
| 112 static void *ngx_resolver_alloc(ngx_resolver_t *r, size_t size); | |
| 1903 | 113 static void *ngx_resolver_calloc(ngx_resolver_t *r, size_t size); |
| 1649 | 114 static void ngx_resolver_free(ngx_resolver_t *r, void *p); |
| 115 static void ngx_resolver_free_locked(ngx_resolver_t *r, void *p); | |
| 116 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
|
117 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
|
118 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
|
119 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
|
120 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
|
121 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
|
122 ngx_resolver_node_t *rn); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
123 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
|
124 static ngx_int_t ngx_resolver_cmp_srvs(const void *one, const void *two); |
| 1649 | 125 |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
126 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
127 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
|
128 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
|
129 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
|
130 struct in6_addr *addr, uint32_t hash); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
131 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
132 |
| 1649 | 133 |
| 134 ngx_resolver_t * | |
|
4225
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
135 ngx_resolver_create(ngx_conf_t *cf, ngx_str_t *names, ngx_uint_t n) |
| 1649 | 136 { |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
137 ngx_str_t s; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
138 ngx_url_t u; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
139 ngx_uint_t i, j; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
140 ngx_resolver_t *r; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
141 ngx_pool_cleanup_t *cln; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
142 ngx_resolver_connection_t *rec; |
| 1649 | 143 |
|
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
|
144 cln = ngx_pool_cleanup_add(cf->pool, 0); |
| 1906 | 145 if (cln == NULL) { |
| 146 return NULL; | |
| 147 } | |
| 148 | |
| 149 cln->handler = ngx_resolver_cleanup; | |
| 150 | |
|
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
|
151 r = ngx_calloc(sizeof(ngx_resolver_t), cf->log); |
| 1649 | 152 if (r == NULL) { |
| 153 return NULL; | |
| 154 } | |
| 155 | |
| 1906 | 156 cln->data = r; |
| 157 | |
|
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
|
158 r->event = ngx_calloc(sizeof(ngx_event_t), cf->log); |
| 1649 | 159 if (r->event == NULL) { |
| 160 return NULL; | |
| 161 } | |
| 162 | |
| 1687 | 163 ngx_rbtree_init(&r->name_rbtree, &r->name_sentinel, |
| 164 ngx_resolver_rbtree_insert_value); | |
| 165 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
166 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
|
167 ngx_resolver_rbtree_insert_value); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
168 |
| 1687 | 169 ngx_rbtree_init(&r->addr_rbtree, &r->addr_sentinel, |
| 170 ngx_rbtree_insert_value); | |
| 1649 | 171 |
| 1685 | 172 ngx_queue_init(&r->name_resend_queue); |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
173 ngx_queue_init(&r->srv_resend_queue); |
| 1685 | 174 ngx_queue_init(&r->addr_resend_queue); |
| 175 | |
| 176 ngx_queue_init(&r->name_expire_queue); | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
177 ngx_queue_init(&r->srv_expire_queue); |
| 1685 | 178 ngx_queue_init(&r->addr_expire_queue); |
| 1649 | 179 |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
180 #if (NGX_HAVE_INET6) |
|
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
181 r->ipv6 = 1; |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
182 |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
183 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
|
184 ngx_resolver_rbtree_insert_addr6_value); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
185 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
186 ngx_queue_init(&r->addr6_resend_queue); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
187 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
188 ngx_queue_init(&r->addr6_expire_queue); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
189 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
190 |
| 1649 | 191 r->event->handler = ngx_resolver_resend_handler; |
| 192 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
|
193 r->event->log = &cf->cycle->new_log; |
|
7052
70e65bf8dfd7
Resolver: cancelable resend timer event.
Ruslan Ermilov <ru@nginx.com>
parents:
7051
diff
changeset
|
194 r->event->cancelable = 1; |
| 1649 | 195 r->ident = -1; |
| 196 | |
| 197 r->resend_timeout = 5; | |
| 6367 | 198 r->tcp_timeout = 5; |
| 1649 | 199 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
|
200 r->valid = 0; |
| 1649 | 201 |
|
2785
d478379e51ac
*) refactor error_log processing: listen socket log might inherit built-in
Igor Sysoev <igor@sysoev.ru>
parents:
2490
diff
changeset
|
202 r->log = &cf->cycle->new_log; |
|
3763
beca53d6ab3c
decrease resolver errors level to error
Igor Sysoev <igor@sysoev.ru>
parents:
3642
diff
changeset
|
203 r->log_level = NGX_LOG_ERR; |
| 1649 | 204 |
|
4784
dd63abf20ba7
Resolver: fixed possible memory leak in ngx_resolver_create().
Maxim Dounin <mdounin@mdounin.ru>
parents:
4684
diff
changeset
|
205 if (n) { |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
206 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
|
207 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
|
208 != NGX_OK) |
|
dd63abf20ba7
Resolver: fixed possible memory leak in ngx_resolver_create().
Maxim Dounin <mdounin@mdounin.ru>
parents:
4684
diff
changeset
|
209 { |
|
dd63abf20ba7
Resolver: fixed possible memory leak in ngx_resolver_create().
Maxim Dounin <mdounin@mdounin.ru>
parents:
4684
diff
changeset
|
210 return NULL; |
|
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 } |
|
dd63abf20ba7
Resolver: fixed possible memory leak in ngx_resolver_create().
Maxim Dounin <mdounin@mdounin.ru>
parents:
4684
diff
changeset
|
213 |
|
4225
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
214 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
|
215 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
|
216 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
|
217 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
|
218 |
|
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
219 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
|
220 |
| 4474 | 221 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
|
222 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
|
223 "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
|
224 return NULL; |
|
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 |
|
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
227 continue; |
|
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
228 } |
|
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
229 |
|
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
230 #if (NGX_HAVE_INET6) |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
231 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
|
232 |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
233 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
|
234 r->ipv6 = 1; |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
235 |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
236 } 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
|
237 r->ipv6 = 0; |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
238 |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
239 } else { |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
240 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
|
241 "invalid parameter: %V", &names[i]); |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
242 return NULL; |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
243 } |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
244 |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
245 continue; |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
246 } |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
247 #endif |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
248 |
|
4225
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
249 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
|
250 |
|
4671
af9342747669
Support for IPv6 literals and an optional port in resolver.
Ruslan Ermilov <ru@nginx.com>
parents:
4653
diff
changeset
|
251 u.url = names[i]; |
|
af9342747669
Support for IPv6 literals and an optional port in resolver.
Ruslan Ermilov <ru@nginx.com>
parents:
4653
diff
changeset
|
252 u.default_port = 53; |
|
af9342747669
Support for IPv6 literals and an optional port in resolver.
Ruslan Ermilov <ru@nginx.com>
parents:
4653
diff
changeset
|
253 |
|
af9342747669
Support for IPv6 literals and an optional port in resolver.
Ruslan Ermilov <ru@nginx.com>
parents:
4653
diff
changeset
|
254 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
|
255 if (u.err) { |
|
bc5f881323b8
Fixed potential null pointer dereference in ngx_resolver_create().
Ruslan Ermilov <ru@nginx.com>
parents:
4619
diff
changeset
|
256 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
|
257 "%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
|
258 u.err, &u.url); |
|
4643
bc5f881323b8
Fixed potential null pointer dereference in ngx_resolver_create().
Ruslan Ermilov <ru@nginx.com>
parents:
4619
diff
changeset
|
259 } |
|
bc5f881323b8
Fixed potential null pointer dereference in ngx_resolver_create().
Ruslan Ermilov <ru@nginx.com>
parents:
4619
diff
changeset
|
260 |
|
4225
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
261 return NULL; |
|
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
262 } |
|
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
263 |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
264 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
|
265 if (rec == NULL) { |
|
1683
1e0b028055ec
allow to use IP addresses without defined resolver
Igor Sysoev <igor@sysoev.ru>
parents:
1679
diff
changeset
|
266 return NULL; |
|
1e0b028055ec
allow to use IP addresses without defined resolver
Igor Sysoev <igor@sysoev.ru>
parents:
1679
diff
changeset
|
267 } |
|
1e0b028055ec
allow to use IP addresses without defined resolver
Igor Sysoev <igor@sysoev.ru>
parents:
1679
diff
changeset
|
268 |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
269 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
|
270 |
|
f5c2c9d656f9
When "resolver" is configured with a domain name, only the first
Ruslan Ermilov <ru@nginx.com>
parents:
4683
diff
changeset
|
271 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
|
272 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
|
273 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
|
274 rec[j].server = u.addrs[j].name; |
| 6367 | 275 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
|
276 } |
|
1683
1e0b028055ec
allow to use IP addresses without defined resolver
Igor Sysoev <igor@sysoev.ru>
parents:
1679
diff
changeset
|
277 } |
| 1649 | 278 |
| 279 return r; | |
| 280 } | |
| 281 | |
| 282 | |
| 1906 | 283 static void |
| 284 ngx_resolver_cleanup(void *data) | |
| 285 { | |
| 286 ngx_resolver_t *r = data; | |
| 287 | |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
288 ngx_uint_t i; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
289 ngx_resolver_connection_t *rec; |
|
4225
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
290 |
| 1906 | 291 if (r) { |
| 292 ngx_log_debug0(NGX_LOG_DEBUG_CORE, ngx_cycle->log, 0, | |
| 293 "cleanup resolver"); | |
| 294 | |
| 295 ngx_resolver_cleanup_tree(r, &r->name_rbtree); | |
| 296 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
297 ngx_resolver_cleanup_tree(r, &r->srv_rbtree); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
298 |
| 1906 | 299 ngx_resolver_cleanup_tree(r, &r->addr_rbtree); |
| 300 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
301 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
302 ngx_resolver_cleanup_tree(r, &r->addr6_rbtree); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
303 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
304 |
| 1906 | 305 if (r->event) { |
|
6843
a3dc657f4e95
Resolver: fixed possible use-after-free in worker on fast shutdown.
Ruslan Ermilov <ru@nginx.com>
parents:
6714
diff
changeset
|
306 if (r->event->timer_set) { |
|
a3dc657f4e95
Resolver: fixed possible use-after-free in worker on fast shutdown.
Ruslan Ermilov <ru@nginx.com>
parents:
6714
diff
changeset
|
307 ngx_del_timer(r->event); |
|
a3dc657f4e95
Resolver: fixed possible use-after-free in worker on fast shutdown.
Ruslan Ermilov <ru@nginx.com>
parents:
6714
diff
changeset
|
308 } |
|
a3dc657f4e95
Resolver: fixed possible use-after-free in worker on fast shutdown.
Ruslan Ermilov <ru@nginx.com>
parents:
6714
diff
changeset
|
309 |
| 1906 | 310 ngx_free(r->event); |
| 311 } | |
| 312 | |
|
4225
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
313 |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
314 rec = r->connections.elts; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
315 |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
316 for (i = 0; i < r->connections.nelts; i++) { |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
317 if (rec[i].udp) { |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
318 ngx_close_connection(rec[i].udp); |
| 1906 | 319 } |
| 6367 | 320 |
| 321 if (rec[i].tcp) { | |
| 322 ngx_close_connection(rec[i].tcp); | |
| 323 } | |
|
6369
06459bc8b92f
Resolver: free TCP buffers on resolver cleanup.
Roman Arutyunyan <arut@nginx.com>
parents:
6368
diff
changeset
|
324 |
|
06459bc8b92f
Resolver: free TCP buffers on resolver cleanup.
Roman Arutyunyan <arut@nginx.com>
parents:
6368
diff
changeset
|
325 if (rec[i].read_buf) { |
|
06459bc8b92f
Resolver: free TCP buffers on resolver cleanup.
Roman Arutyunyan <arut@nginx.com>
parents:
6368
diff
changeset
|
326 ngx_resolver_free(r, rec[i].read_buf->start); |
|
06459bc8b92f
Resolver: free TCP buffers on resolver cleanup.
Roman Arutyunyan <arut@nginx.com>
parents:
6368
diff
changeset
|
327 ngx_resolver_free(r, rec[i].read_buf); |
|
06459bc8b92f
Resolver: free TCP buffers on resolver cleanup.
Roman Arutyunyan <arut@nginx.com>
parents:
6368
diff
changeset
|
328 } |
|
06459bc8b92f
Resolver: free TCP buffers on resolver cleanup.
Roman Arutyunyan <arut@nginx.com>
parents:
6368
diff
changeset
|
329 |
|
06459bc8b92f
Resolver: free TCP buffers on resolver cleanup.
Roman Arutyunyan <arut@nginx.com>
parents:
6368
diff
changeset
|
330 if (rec[i].write_buf) { |
|
06459bc8b92f
Resolver: free TCP buffers on resolver cleanup.
Roman Arutyunyan <arut@nginx.com>
parents:
6368
diff
changeset
|
331 ngx_resolver_free(r, rec[i].write_buf->start); |
|
06459bc8b92f
Resolver: free TCP buffers on resolver cleanup.
Roman Arutyunyan <arut@nginx.com>
parents:
6368
diff
changeset
|
332 ngx_resolver_free(r, rec[i].write_buf); |
|
06459bc8b92f
Resolver: free TCP buffers on resolver cleanup.
Roman Arutyunyan <arut@nginx.com>
parents:
6368
diff
changeset
|
333 } |
| 1906 | 334 } |
| 335 | |
| 336 ngx_free(r); | |
| 337 } | |
| 338 } | |
| 339 | |
| 340 | |
| 341 static void | |
| 342 ngx_resolver_cleanup_tree(ngx_resolver_t *r, ngx_rbtree_t *tree) | |
| 343 { | |
| 344 ngx_resolver_ctx_t *ctx, *next; | |
| 345 ngx_resolver_node_t *rn; | |
| 346 | |
| 347 while (tree->root != tree->sentinel) { | |
| 348 | |
|
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
349 rn = ngx_resolver_node(ngx_rbtree_min(tree->root, tree->sentinel)); |
| 1906 | 350 |
| 351 ngx_queue_remove(&rn->queue); | |
| 352 | |
| 353 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
|
354 next = ctx->next; |
| 1906 | 355 |
| 356 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
|
357 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
|
358 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
|
359 } |
|
259e2a76e8fb
Resolver: fixed possible use-after-free in worker on fast shutdown.
Ruslan Ermilov <ru@nginx.com>
parents:
6843
diff
changeset
|
360 |
| 1906 | 361 ngx_resolver_free(r, ctx->event); |
| 362 } | |
| 363 | |
| 364 ngx_resolver_free(r, ctx); | |
| 365 } | |
| 366 | |
| 367 ngx_rbtree_delete(tree, &rn->node); | |
| 368 | |
| 369 ngx_resolver_free_node(r, rn); | |
| 370 } | |
| 371 } | |
| 372 | |
| 373 | |
| 1649 | 374 ngx_resolver_ctx_t * |
| 375 ngx_resolve_start(ngx_resolver_t *r, ngx_resolver_ctx_t *temp) | |
| 376 { | |
| 377 in_addr_t addr; | |
| 378 ngx_resolver_ctx_t *ctx; | |
| 379 | |
| 380 if (temp) { | |
| 381 addr = ngx_inet_addr(temp->name.data, temp->name.len); | |
| 382 | |
| 383 if (addr != INADDR_NONE) { | |
| 384 temp->resolver = r; | |
| 385 temp->state = NGX_OK; | |
| 386 temp->naddrs = 1; | |
| 387 temp->addrs = &temp->addr; | |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
388 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
|
389 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
|
390 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
|
391 temp->sin.sin_family = AF_INET; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
392 temp->sin.sin_addr.s_addr = addr; |
| 1649 | 393 temp->quick = 1; |
| 394 | |
| 395 return temp; | |
| 396 } | |
| 397 } | |
| 398 | |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
399 if (r->connections.nelts == 0) { |
|
1683
1e0b028055ec
allow to use IP addresses without defined resolver
Igor Sysoev <igor@sysoev.ru>
parents:
1679
diff
changeset
|
400 return NGX_NO_RESOLVER; |
|
1e0b028055ec
allow to use IP addresses without defined resolver
Igor Sysoev <igor@sysoev.ru>
parents:
1679
diff
changeset
|
401 } |
|
1e0b028055ec
allow to use IP addresses without defined resolver
Igor Sysoev <igor@sysoev.ru>
parents:
1679
diff
changeset
|
402 |
| 1649 | 403 ctx = ngx_resolver_calloc(r, sizeof(ngx_resolver_ctx_t)); |
| 404 | |
| 405 if (ctx) { | |
| 406 ctx->resolver = r; | |
| 407 } | |
| 408 | |
| 409 return ctx; | |
| 410 } | |
| 411 | |
| 412 | |
| 413 ngx_int_t | |
| 414 ngx_resolve_name(ngx_resolver_ctx_t *ctx) | |
| 415 { | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
416 size_t slen; |
| 1649 | 417 ngx_int_t rc; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
418 ngx_str_t name; |
| 1649 | 419 ngx_resolver_t *r; |
| 420 | |
| 421 r = ctx->resolver; | |
| 422 | |
|
5505
d091d16ed398
Resolver: added support for domain names with a trailing dot.
Yichun Zhang <agentzh@gmail.com>
parents:
5485
diff
changeset
|
423 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
|
424 ctx->name.len--; |
|
d091d16ed398
Resolver: added support for domain names with a trailing dot.
Yichun Zhang <agentzh@gmail.com>
parents:
5485
diff
changeset
|
425 } |
|
d091d16ed398
Resolver: added support for domain names with a trailing dot.
Yichun Zhang <agentzh@gmail.com>
parents:
5485
diff
changeset
|
426 |
| 1649 | 427 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, |
| 428 "resolve: \"%V\"", &ctx->name); | |
| 429 | |
| 430 if (ctx->quick) { | |
| 431 ctx->handler(ctx); | |
| 432 return NGX_OK; | |
| 433 } | |
| 434 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
435 if (ctx->service.len) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
436 slen = ctx->service.len; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
437 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
438 if (ngx_strlchr(ctx->service.data, |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
439 ctx->service.data + ctx->service.len, '.') |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
440 == NULL) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
441 { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
442 slen += sizeof("_._tcp") - 1; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
443 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
444 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
445 name.len = slen + 1 + ctx->name.len; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
446 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
447 name.data = ngx_resolver_alloc(r, name.len); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
448 if (name.data == NULL) { |
|
7039
a39bc74873fa
Resolver: fixed allocation error handling while resolving SRV.
Bart Warmerdam <bartw@xs4all.nl>
parents:
6922
diff
changeset
|
449 goto failed; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
450 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
451 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
452 if (slen == ctx->service.len) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
453 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
|
454 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
455 } else { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
456 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
|
457 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
458 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
459 /* lock name mutex */ |
|
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 rc = ngx_resolve_name_locked(r, ctx, &name); |
|
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 ngx_resolver_free(r, name.data); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
464 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
465 } else { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
466 /* lock name mutex */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
467 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
468 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
|
469 } |
| 1649 | 470 |
| 471 if (rc == NGX_OK) { | |
| 472 return NGX_OK; | |
| 473 } | |
| 474 | |
| 475 /* unlock name mutex */ | |
| 476 | |
| 477 if (rc == NGX_AGAIN) { | |
| 478 return NGX_OK; | |
| 479 } | |
| 480 | |
|
1904
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
481 /* NGX_ERROR */ |
| 1649 | 482 |
| 483 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
|
484 ngx_resolver_free(r, ctx->event); |
| 1649 | 485 } |
| 486 | |
|
7039
a39bc74873fa
Resolver: fixed allocation error handling while resolving SRV.
Bart Warmerdam <bartw@xs4all.nl>
parents:
6922
diff
changeset
|
487 failed: |
|
a39bc74873fa
Resolver: fixed allocation error handling while resolving SRV.
Bart Warmerdam <bartw@xs4all.nl>
parents:
6922
diff
changeset
|
488 |
|
1904
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
489 ngx_resolver_free(r, ctx); |
| 1649 | 490 |
| 491 return NGX_ERROR; | |
| 492 } | |
| 493 | |
| 494 | |
| 495 void | |
| 496 ngx_resolve_name_done(ngx_resolver_ctx_t *ctx) | |
| 497 { | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
498 ngx_uint_t i; |
| 1649 | 499 ngx_resolver_t *r; |
| 500 ngx_resolver_ctx_t *w, **p; | |
| 501 ngx_resolver_node_t *rn; | |
| 502 | |
| 503 r = ctx->resolver; | |
| 504 | |
| 505 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, | |
| 506 "resolve name done: %i", ctx->state); | |
| 507 | |
| 508 if (ctx->quick) { | |
| 509 return; | |
| 510 } | |
| 511 | |
| 512 if (ctx->event && ctx->event->timer_set) { | |
| 513 ngx_del_timer(ctx->event); | |
| 514 } | |
| 515 | |
| 516 /* lock name mutex */ | |
| 517 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
518 if (ctx->nsrvs) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
519 for (i = 0; i < ctx->nsrvs; i++) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
520 if (ctx->srvs[i].ctx) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
521 ngx_resolve_name_done(ctx->srvs[i].ctx); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
522 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
523 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
524 if (ctx->srvs[i].addrs) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
525 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
|
526 ngx_resolver_free(r, ctx->srvs[i].addrs); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
527 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
528 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
529 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
|
530 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
531 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
532 ngx_resolver_free(r, ctx->srvs); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
533 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
534 |
|
6348
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
535 if (ctx->state == NGX_AGAIN || ctx->state == NGX_RESOLVE_TIMEDOUT) { |
| 1649 | 536 |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
537 rn = ctx->node; |
| 1649 | 538 |
| 539 if (rn) { | |
| 540 p = &rn->waiting; | |
| 541 w = rn->waiting; | |
| 542 | |
| 543 while (w) { | |
| 544 if (w == ctx) { | |
| 545 *p = w->next; | |
| 546 | |
| 547 goto done; | |
| 548 } | |
| 549 | |
| 550 p = &w->next; | |
| 551 w = w->next; | |
| 552 } | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
553 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
554 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
|
555 "could not cancel %V resolving", &ctx->name); |
| 1649 | 556 } |
| 557 } | |
| 558 | |
| 559 done: | |
| 560 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
561 if (ctx->service.len) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
562 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
|
563 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
564 } else { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
565 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
|
566 } |
| 1649 | 567 |
| 568 /* unlock name mutex */ | |
| 569 | |
|
1904
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
570 /* 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
|
571 |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
572 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
|
573 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
|
574 } |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
575 |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
576 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
|
577 |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
578 /* unlock alloc mutex */ |
|
6196
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
579 |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
580 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
|
581 ngx_del_timer(r->event); |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
582 } |
| 1649 | 583 } |
| 584 | |
| 585 | |
| 586 static ngx_int_t | |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
587 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
|
588 ngx_str_t *name) |
| 1649 | 589 { |
| 590 uint32_t hash; | |
|
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
591 ngx_int_t rc; |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
592 ngx_str_t cname; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
593 ngx_uint_t i, naddrs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
594 ngx_queue_t *resend_queue, *expire_queue; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
595 ngx_rbtree_t *tree; |
|
6349
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
596 ngx_resolver_ctx_t *next, *last; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
597 ngx_resolver_addr_t *addrs; |
| 1649 | 598 ngx_resolver_node_t *rn; |
| 599 | |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
600 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
|
601 |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
602 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
|
603 |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
604 if (ctx->service.len) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
605 rn = ngx_resolver_lookup_srv(r, name, hash); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
606 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
607 tree = &r->srv_rbtree; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
608 resend_queue = &r->srv_resend_queue; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
609 expire_queue = &r->srv_expire_queue; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
610 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
611 } else { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
612 rn = ngx_resolver_lookup_name(r, name, hash); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
613 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
614 tree = &r->name_rbtree; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
615 resend_queue = &r->name_resend_queue; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
616 expire_queue = &r->name_expire_queue; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
617 } |
| 1649 | 618 |
| 619 if (rn) { | |
| 620 | |
|
6349
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
621 /* 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
|
622 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
|
623 |
| 1649 | 624 if (rn->valid >= ngx_time()) { |
| 625 | |
| 626 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, "resolve cached"); | |
| 627 | |
| 628 ngx_queue_remove(&rn->queue); | |
| 629 | |
| 630 rn->expire = ngx_time() + r->expire; | |
| 631 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
632 ngx_queue_insert_head(expire_queue, &rn->queue); |
| 1649 | 633 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
634 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
|
635 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
636 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
|
637 #endif |
| 1649 | 638 |
| 639 if (naddrs) { | |
| 640 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
641 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
|
642 addrs = NULL; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
643 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
644 } else { |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
645 addrs = ngx_resolver_export(r, rn, 1); |
| 1649 | 646 if (addrs == NULL) { |
| 647 return NGX_ERROR; | |
| 648 } | |
| 649 } | |
| 650 | |
|
6349
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
651 last->next = rn->waiting; |
| 1649 | 652 rn->waiting = NULL; |
| 653 | |
| 654 /* unlock name mutex */ | |
| 655 | |
| 656 do { | |
| 657 ctx->state = NGX_OK; | |
|
6456
c94aba230a5a
Resolver: introduced valid field in resolver responses.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6372
diff
changeset
|
658 ctx->valid = rn->valid; |
| 1649 | 659 ctx->naddrs = naddrs; |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
660 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
661 if (addrs == NULL) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
662 ctx->addrs = &ctx->addr; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
663 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
|
664 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
|
665 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
|
666 ctx->sin.sin_family = AF_INET; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
667 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
|
668 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
669 } else { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
670 ctx->addrs = addrs; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
671 } |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
672 |
| 1649 | 673 next = ctx->next; |
| 674 | |
| 675 ctx->handler(ctx); | |
| 676 | |
| 677 ctx = next; | |
| 678 } while (ctx); | |
| 679 | |
|
5475
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 ngx_resolver_free(r, addrs->sockaddr); |
| 1649 | 682 ngx_resolver_free(r, addrs); |
| 683 } | |
| 684 | |
| 685 return NGX_OK; | |
| 686 } | |
| 687 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
688 if (rn->nsrvs) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
689 last->next = rn->waiting; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
690 rn->waiting = NULL; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
691 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
692 /* unlock name mutex */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
693 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
694 do { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
695 next = ctx->next; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
696 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
697 ngx_resolver_resolve_srv_names(ctx, rn); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
698 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
699 ctx = next; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
700 } while (ctx); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
701 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
702 return NGX_OK; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
703 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
704 |
| 1649 | 705 /* NGX_RESOLVE_CNAME */ |
| 706 | |
| 1969 | 707 if (ctx->recursion++ < NGX_RESOLVER_MAX_RECURSION) { |
| 708 | |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
709 cname.len = rn->cnlen; |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
710 cname.data = rn->u.cname; |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
711 |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
712 return ngx_resolve_name_locked(r, ctx, &cname); |
| 1969 | 713 } |
| 714 | |
|
6349
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
715 last->next = rn->waiting; |
| 1969 | 716 rn->waiting = NULL; |
| 717 | |
| 718 /* unlock name mutex */ | |
| 719 | |
| 720 do { | |
| 721 ctx->state = NGX_RESOLVE_NXDOMAIN; | |
|
6456
c94aba230a5a
Resolver: introduced valid field in resolver responses.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6372
diff
changeset
|
722 ctx->valid = ngx_time() + (r->valid ? r->valid : 10); |
| 1969 | 723 next = ctx->next; |
| 724 | |
| 725 ctx->handler(ctx); | |
| 726 | |
| 727 ctx = next; | |
| 728 } while (ctx); | |
| 729 | |
| 730 return NGX_OK; | |
| 1649 | 731 } |
| 732 | |
| 733 if (rn->waiting) { | |
|
7051
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
734 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
|
735 return NGX_ERROR; |
|
6348
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
736 } |
|
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
737 |
|
6349
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
738 last->next = rn->waiting; |
| 1649 | 739 rn->waiting = ctx; |
| 3297 | 740 ctx->state = NGX_AGAIN; |
|
7040
d49b74a683b1
Resolver: added the "async" flag to resolver context.
Roman Arutyunyan <arut@nginx.com>
parents:
7039
diff
changeset
|
741 ctx->async = 1; |
| 1649 | 742 |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
743 do { |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
744 ctx->node = rn; |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
745 ctx = ctx->next; |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
746 } while (ctx); |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
747 |
| 1649 | 748 return NGX_AGAIN; |
| 749 } | |
| 750 | |
| 751 ngx_queue_remove(&rn->queue); | |
| 752 | |
| 753 /* lock alloc mutex */ | |
| 754 | |
|
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
755 if (rn->query) { |
|
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
756 ngx_resolver_free_locked(r, rn->query); |
|
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
757 rn->query = NULL; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
758 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
759 rn->query6 = NULL; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
760 #endif |
|
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
761 } |
| 1649 | 762 |
| 763 if (rn->cnlen) { | |
| 764 ngx_resolver_free_locked(r, rn->u.cname); | |
| 765 } | |
| 766 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
767 if (rn->naddrs > 1 && rn->naddrs != (u_short) -1) { |
| 1649 | 768 ngx_resolver_free_locked(r, rn->u.addrs); |
| 769 } | |
| 770 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
771 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
772 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
|
773 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
|
774 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
775 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
776 |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
777 if (rn->nsrvs) { |
|
6860
f18c285c2e59
Win32: fixed some warnings reported by Borland C.
Maxim Dounin <mdounin@mdounin.ru>
parents:
6847
diff
changeset
|
778 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
|
779 if (rn->u.srvs[i].name.data) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
780 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
|
781 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
782 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
783 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
784 ngx_resolver_free_locked(r, rn->u.srvs); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
785 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
786 |
| 1649 | 787 /* unlock alloc mutex */ |
| 788 | |
| 789 } else { | |
| 790 | |
| 791 rn = ngx_resolver_alloc(r, sizeof(ngx_resolver_node_t)); | |
| 792 if (rn == NULL) { | |
| 793 return NGX_ERROR; | |
| 794 } | |
| 795 | |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
796 rn->name = ngx_resolver_dup(r, name->data, name->len); |
| 1649 | 797 if (rn->name == NULL) { |
| 798 ngx_resolver_free(r, rn); | |
| 799 return NGX_ERROR; | |
| 800 } | |
| 801 | |
| 802 rn->node.key = hash; | |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
803 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
|
804 rn->query = NULL; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
805 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
806 rn->query6 = NULL; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
807 #endif |
| 1649 | 808 |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
809 ngx_rbtree_insert(tree, &rn->node); |
| 1649 | 810 } |
| 811 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
812 if (ctx->service.len) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
813 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
|
814 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
815 } else { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
816 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
|
817 } |
|
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
818 |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
819 if (rc == NGX_ERROR) { |
| 1649 | 820 goto failed; |
| 821 } | |
| 822 | |
|
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
823 if (rc == NGX_DECLINED) { |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
824 ngx_rbtree_delete(tree, &rn->node); |
|
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
825 |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
826 ngx_resolver_free(r, rn->query); |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
827 ngx_resolver_free(r, rn->name); |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
828 ngx_resolver_free(r, rn); |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
829 |
|
6349
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
830 do { |
|
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
831 ctx->state = NGX_RESOLVE_NXDOMAIN; |
|
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
832 next = ctx->next; |
|
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
833 |
|
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
834 ctx->handler(ctx); |
|
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
835 |
|
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
836 ctx = next; |
|
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
837 } while (ctx); |
|
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
838 |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
839 return NGX_OK; |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
840 } |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
841 |
|
6366
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
842 rn->last_connection = r->last_connection++; |
|
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
843 if (r->last_connection == r->connections.nelts) { |
|
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
844 r->last_connection = 0; |
|
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
845 } |
|
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
846 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
847 rn->naddrs = (u_short) -1; |
| 6367 | 848 rn->tcp = 0; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
849 #if (NGX_HAVE_INET6) |
|
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
850 rn->naddrs6 = r->ipv6 ? (u_short) -1 : 0; |
| 6367 | 851 rn->tcp6 = 0; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
852 #endif |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
853 rn->nsrvs = 0; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
854 |
| 1649 | 855 if (ngx_resolver_send_query(r, rn) != NGX_OK) { |
| 856 goto failed; | |
| 857 } | |
| 858 | |
|
7051
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
859 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
|
860 goto failed; |
| 1649 | 861 } |
| 862 | |
|
6846
c3a895b94d3f
Resolver: fixed a race between parallel name and addr resolves.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6845
diff
changeset
|
863 if (ngx_resolver_resend_empty(r)) { |
| 1649 | 864 ngx_add_timer(r->event, (ngx_msec_t) (r->resend_timeout * 1000)); |
| 865 } | |
| 866 | |
| 867 rn->expire = ngx_time() + r->resend_timeout; | |
| 868 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
869 ngx_queue_insert_head(resend_queue, &rn->queue); |
| 1649 | 870 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
871 rn->code = 0; |
| 1649 | 872 rn->cnlen = 0; |
| 873 rn->valid = 0; | |
|
5485
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
874 rn->ttl = NGX_MAX_UINT32_VALUE; |
| 1649 | 875 rn->waiting = ctx; |
| 876 | |
| 877 ctx->state = NGX_AGAIN; | |
|
7040
d49b74a683b1
Resolver: added the "async" flag to resolver context.
Roman Arutyunyan <arut@nginx.com>
parents:
7039
diff
changeset
|
878 ctx->async = 1; |
| 1649 | 879 |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
880 do { |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
881 ctx->node = rn; |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
882 ctx = ctx->next; |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
883 } while (ctx); |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
884 |
| 1649 | 885 return NGX_AGAIN; |
| 886 | |
| 887 failed: | |
| 888 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
889 ngx_rbtree_delete(tree, &rn->node); |
| 1649 | 890 |
|
1960
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
891 if (rn->query) { |
|
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
892 ngx_resolver_free(r, rn->query); |
|
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
893 } |
|
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
894 |
| 1649 | 895 ngx_resolver_free(r, rn->name); |
| 896 | |
| 897 ngx_resolver_free(r, rn); | |
| 898 | |
| 899 return NGX_ERROR; | |
| 900 } | |
| 583 | 901 |
| 902 | |
| 903 ngx_int_t | |
| 1649 | 904 ngx_resolve_addr(ngx_resolver_ctx_t *ctx) |
| 905 { | |
|
2484
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
906 u_char *name; |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
907 in_addr_t addr; |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
908 ngx_queue_t *resend_queue, *expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
909 ngx_rbtree_t *tree; |
| 1649 | 910 ngx_resolver_t *r; |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
911 struct sockaddr_in *sin; |
| 1649 | 912 ngx_resolver_node_t *rn; |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
913 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
914 uint32_t hash; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
915 struct sockaddr_in6 *sin6; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
916 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
917 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
918 #if (NGX_SUPPRESS_WARN) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
919 addr = 0; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
920 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
921 hash = 0; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
922 sin6 = NULL; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
923 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
924 #endif |
| 1649 | 925 |
| 926 r = ctx->resolver; | |
| 927 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
928 switch (ctx->addr.sockaddr->sa_family) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
929 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
930 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
931 case AF_INET6: |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
932 sin6 = (struct sockaddr_in6 *) ctx->addr.sockaddr; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
933 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
|
934 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
935 /* lock addr mutex */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
936 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
937 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
|
938 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
939 tree = &r->addr6_rbtree; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
940 resend_queue = &r->addr6_resend_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
941 expire_queue = &r->addr6_expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
942 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
943 break; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
944 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
945 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
946 default: /* AF_INET */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
947 sin = (struct sockaddr_in *) ctx->addr.sockaddr; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
948 addr = ntohl(sin->sin_addr.s_addr); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
949 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
950 /* lock addr mutex */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
951 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
952 rn = ngx_resolver_lookup_addr(r, addr); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
953 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
954 tree = &r->addr_rbtree; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
955 resend_queue = &r->addr_resend_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
956 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
|
957 } |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
958 |
| 1649 | 959 if (rn) { |
| 960 | |
| 961 if (rn->valid >= ngx_time()) { | |
| 962 | |
| 963 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, "resolve cached"); | |
| 964 | |
| 965 ngx_queue_remove(&rn->queue); | |
| 966 | |
| 967 rn->expire = ngx_time() + r->expire; | |
| 968 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
969 ngx_queue_insert_head(expire_queue, &rn->queue); |
| 1649 | 970 |
|
2484
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
971 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
|
972 if (name == NULL) { |
| 1649 | 973 goto failed; |
| 974 } | |
| 975 | |
|
2484
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
976 ctx->name.len = rn->nlen; |
|
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
977 ctx->name.data = name; |
|
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
978 |
| 1649 | 979 /* unlock addr mutex */ |
| 980 | |
| 981 ctx->state = NGX_OK; | |
|
6456
c94aba230a5a
Resolver: introduced valid field in resolver responses.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6372
diff
changeset
|
982 ctx->valid = rn->valid; |
| 1649 | 983 |
| 984 ctx->handler(ctx); | |
| 985 | |
|
2484
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
986 ngx_resolver_free(r, name); |
| 1649 | 987 |
| 988 return NGX_OK; | |
| 989 } | |
| 990 | |
| 991 if (rn->waiting) { | |
|
7051
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
992 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
|
993 return NGX_ERROR; |
|
6348
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
994 } |
|
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
995 |
| 1649 | 996 ctx->next = rn->waiting; |
| 997 rn->waiting = ctx; | |
| 3297 | 998 ctx->state = NGX_AGAIN; |
|
7040
d49b74a683b1
Resolver: added the "async" flag to resolver context.
Roman Arutyunyan <arut@nginx.com>
parents:
7039
diff
changeset
|
999 ctx->async = 1; |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
1000 ctx->node = rn; |
| 1649 | 1001 |
|
2487
9b4dce95c744
fix return code, this fixes segfault when two or more
Igor Sysoev <igor@sysoev.ru>
parents:
2486
diff
changeset
|
1002 /* unlock addr mutex */ |
|
9b4dce95c744
fix return code, this fixes segfault when two or more
Igor Sysoev <igor@sysoev.ru>
parents:
2486
diff
changeset
|
1003 |
|
9b4dce95c744
fix return code, this fixes segfault when two or more
Igor Sysoev <igor@sysoev.ru>
parents:
2486
diff
changeset
|
1004 return NGX_OK; |
| 1649 | 1005 } |
| 1006 | |
| 1007 ngx_queue_remove(&rn->queue); | |
| 1008 | |
| 1009 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
|
1010 rn->query = NULL; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1011 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1012 rn->query6 = NULL; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1013 #endif |
| 1649 | 1014 |
| 1015 } else { | |
| 1016 rn = ngx_resolver_alloc(r, sizeof(ngx_resolver_node_t)); | |
| 1017 if (rn == NULL) { | |
| 1018 goto failed; | |
| 1019 } | |
| 1020 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1021 switch (ctx->addr.sockaddr->sa_family) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1022 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1023 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1024 case AF_INET6: |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1025 rn->addr6 = sin6->sin6_addr; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1026 rn->node.key = hash; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1027 break; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1028 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1029 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1030 default: /* AF_INET */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1031 rn->node.key = addr; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1032 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1033 |
|
1960
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
1034 rn->query = NULL; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1035 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1036 rn->query6 = NULL; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1037 #endif |
| 1649 | 1038 |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1039 ngx_rbtree_insert(tree, &rn->node); |
| 1649 | 1040 } |
| 1041 | |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
1042 if (ngx_resolver_create_addr_query(r, rn, &ctx->addr) != NGX_OK) { |
| 1649 | 1043 goto failed; |
| 1044 } | |
| 1045 | |
|
6366
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1046 rn->last_connection = r->last_connection++; |
|
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1047 if (r->last_connection == r->connections.nelts) { |
|
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1048 r->last_connection = 0; |
|
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1049 } |
|
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1050 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1051 rn->naddrs = (u_short) -1; |
| 6367 | 1052 rn->tcp = 0; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1053 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1054 rn->naddrs6 = (u_short) -1; |
| 6367 | 1055 rn->tcp6 = 0; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1056 #endif |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1057 rn->nsrvs = 0; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1058 |
| 1649 | 1059 if (ngx_resolver_send_query(r, rn) != NGX_OK) { |
| 1060 goto failed; | |
| 1061 } | |
| 1062 | |
|
7051
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
1063 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
|
1064 goto failed; |
| 1649 | 1065 } |
| 1066 | |
|
6846
c3a895b94d3f
Resolver: fixed a race between parallel name and addr resolves.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6845
diff
changeset
|
1067 if (ngx_resolver_resend_empty(r)) { |
| 1649 | 1068 ngx_add_timer(r->event, (ngx_msec_t) (r->resend_timeout * 1000)); |
| 1069 } | |
| 1070 | |
| 1071 rn->expire = ngx_time() + r->resend_timeout; | |
| 1072 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1073 ngx_queue_insert_head(resend_queue, &rn->queue); |
| 1649 | 1074 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1075 rn->code = 0; |
| 1649 | 1076 rn->cnlen = 0; |
| 1077 rn->name = NULL; | |
| 1078 rn->nlen = 0; | |
| 1079 rn->valid = 0; | |
|
5485
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
1080 rn->ttl = NGX_MAX_UINT32_VALUE; |
| 1649 | 1081 rn->waiting = ctx; |
| 1082 | |
| 1083 /* unlock addr mutex */ | |
| 1084 | |
| 1085 ctx->state = NGX_AGAIN; | |
|
7040
d49b74a683b1
Resolver: added the "async" flag to resolver context.
Roman Arutyunyan <arut@nginx.com>
parents:
7039
diff
changeset
|
1086 ctx->async = 1; |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
1087 ctx->node = rn; |
| 1649 | 1088 |
| 1089 return NGX_OK; | |
| 1090 | |
| 1091 failed: | |
| 1092 | |
| 1093 if (rn) { | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1094 ngx_rbtree_delete(tree, &rn->node); |
| 1649 | 1095 |
|
1960
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
1096 if (rn->query) { |
|
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
1097 ngx_resolver_free(r, rn->query); |
|
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
1098 } |
|
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
1099 |
| 1649 | 1100 ngx_resolver_free(r, rn); |
| 1101 } | |
| 1102 | |
| 1103 /* unlock addr mutex */ | |
| 1104 | |
| 1105 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
|
1106 ngx_resolver_free(r, ctx->event); |
| 1649 | 1107 } |
| 1108 | |
|
1904
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1109 ngx_resolver_free(r, ctx); |
| 1649 | 1110 |
| 1111 return NGX_ERROR; | |
| 1112 } | |
| 1113 | |
| 1114 | |
| 1115 void | |
| 1116 ngx_resolve_addr_done(ngx_resolver_ctx_t *ctx) | |
| 1117 { | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1118 ngx_queue_t *expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1119 ngx_rbtree_t *tree; |
| 1649 | 1120 ngx_resolver_t *r; |
| 1121 ngx_resolver_ctx_t *w, **p; | |
| 1122 ngx_resolver_node_t *rn; | |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1123 |
| 1649 | 1124 r = ctx->resolver; |
| 1125 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1126 switch (ctx->addr.sockaddr->sa_family) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1127 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1128 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1129 case AF_INET6: |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1130 tree = &r->addr6_rbtree; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1131 expire_queue = &r->addr6_expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1132 break; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1133 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1134 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1135 default: /* AF_INET */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1136 tree = &r->addr_rbtree; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1137 expire_queue = &r->addr_expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1138 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1139 |
| 1649 | 1140 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, |
| 1141 "resolve addr done: %i", ctx->state); | |
| 1142 | |
| 1143 if (ctx->event && ctx->event->timer_set) { | |
| 1144 ngx_del_timer(ctx->event); | |
| 1145 } | |
| 1146 | |
| 1147 /* lock addr mutex */ | |
| 1148 | |
|
6348
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
1149 if (ctx->state == NGX_AGAIN || ctx->state == NGX_RESOLVE_TIMEDOUT) { |
| 1649 | 1150 |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
1151 rn = ctx->node; |
| 1649 | 1152 |
| 1153 if (rn) { | |
| 1154 p = &rn->waiting; | |
| 1155 w = rn->waiting; | |
| 1156 | |
| 1157 while (w) { | |
| 1158 if (w == ctx) { | |
| 1159 *p = w->next; | |
| 1160 | |
| 1161 goto done; | |
| 1162 } | |
| 1163 | |
| 1164 p = &w->next; | |
| 1165 w = w->next; | |
| 1166 } | |
| 1167 } | |
| 1168 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1169 { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1170 u_char text[NGX_SOCKADDR_STRLEN]; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1171 ngx_str_t addrtext; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1172 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1173 addrtext.data = text; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1174 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
|
1175 text, NGX_SOCKADDR_STRLEN, 0); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1176 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1177 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
|
1178 "could not cancel %V resolving", &addrtext); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1179 } |
| 1649 | 1180 } |
| 1181 | |
| 1182 done: | |
| 1183 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1184 ngx_resolver_expire(r, tree, expire_queue); |
| 1649 | 1185 |
| 1186 /* unlock addr mutex */ | |
| 1187 | |
|
1904
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1188 /* 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
|
1189 |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1190 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
|
1191 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
|
1192 } |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1193 |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1194 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
|
1195 |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1196 /* unlock alloc mutex */ |
|
6196
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1197 |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1198 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
|
1199 ngx_del_timer(r->event); |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1200 } |
| 1649 | 1201 } |
| 1202 | |
| 1203 | |
| 1204 static void | |
| 1205 ngx_resolver_expire(ngx_resolver_t *r, ngx_rbtree_t *tree, ngx_queue_t *queue) | |
| 1206 { | |
| 1207 time_t now; | |
| 1208 ngx_uint_t i; | |
| 1209 ngx_queue_t *q; | |
| 1210 ngx_resolver_node_t *rn; | |
| 1211 | |
| 1212 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver expire"); | |
| 1213 | |
| 1214 now = ngx_time(); | |
| 1215 | |
| 1216 for (i = 0; i < 2; i++) { | |
| 1217 if (ngx_queue_empty(queue)) { | |
| 1218 return; | |
| 1219 } | |
| 1220 | |
| 1221 q = ngx_queue_last(queue); | |
| 1222 | |
| 1223 rn = ngx_queue_data(q, ngx_resolver_node_t, queue); | |
| 1224 | |
| 1225 if (now <= rn->expire) { | |
| 1226 return; | |
| 1227 } | |
| 1228 | |
| 1774 | 1229 ngx_log_debug2(NGX_LOG_DEBUG_CORE, r->log, 0, |
| 1230 "resolver expire \"%*s\"", (size_t) rn->nlen, rn->name); | |
| 1649 | 1231 |
| 1232 ngx_queue_remove(q); | |
| 1233 | |
| 1234 ngx_rbtree_delete(tree, &rn->node); | |
| 1235 | |
| 1236 ngx_resolver_free_node(r, rn); | |
| 1237 } | |
| 1238 } | |
| 1239 | |
| 1240 | |
| 1241 static ngx_int_t | |
| 1242 ngx_resolver_send_query(ngx_resolver_t *r, ngx_resolver_node_t *rn) | |
| 1243 { | |
| 6367 | 1244 ngx_int_t rc; |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
1245 ngx_resolver_connection_t *rec; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
1246 |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
1247 rec = r->connections.elts; |
|
6366
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1248 rec = &rec[rn->last_connection]; |
| 1649 | 1249 |
| 6367 | 1250 if (rec->log.handler == NULL) { |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
1251 rec->log = *r->log; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
1252 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
|
1253 rec->log.data = rec; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
1254 rec->log.action = "resolving"; |
| 1649 | 1255 } |
| 1256 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1257 if (rn->naddrs == (u_short) -1) { |
| 6367 | 1258 rc = rn->tcp ? ngx_resolver_send_tcp_query(r, rec, rn->query, rn->qlen) |
| 1259 : ngx_resolver_send_udp_query(r, rec, rn->query, rn->qlen); | |
| 1260 | |
| 1261 if (rc != NGX_OK) { | |
| 1262 return rc; | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1263 } |
| 1649 | 1264 } |
| 1265 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1266 #if (NGX_HAVE_INET6) |
| 6367 | 1267 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1268 if (rn->query6 && rn->naddrs6 == (u_short) -1) { |
| 6367 | 1269 rc = rn->tcp6 |
| 1270 ? ngx_resolver_send_tcp_query(r, rec, rn->query6, rn->qlen) | |
| 1271 : ngx_resolver_send_udp_query(r, rec, rn->query6, rn->qlen); | |
| 1272 | |
| 1273 if (rc != NGX_OK) { | |
| 1274 return rc; | |
| 1275 } | |
| 1276 } | |
| 1277 | |
| 1278 #endif | |
| 1279 | |
| 1280 return NGX_OK; | |
| 1281 } | |
| 1282 | |
| 1283 | |
| 1284 static ngx_int_t | |
| 1285 ngx_resolver_send_udp_query(ngx_resolver_t *r, ngx_resolver_connection_t *rec, | |
| 1286 u_char *query, u_short qlen) | |
| 1287 { | |
| 1288 ssize_t n; | |
| 1289 | |
| 1290 if (rec->udp == NULL) { | |
| 1291 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
|
1292 return NGX_ERROR; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1293 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1294 |
| 6367 | 1295 rec->udp->data = rec; |
| 1296 rec->udp->read->handler = ngx_resolver_udp_read; | |
| 1297 rec->udp->read->resolver = 1; | |
| 1298 } | |
| 1299 | |
| 1300 n = ngx_send(rec->udp, query, qlen); | |
| 1301 | |
| 1302 if (n == -1) { | |
| 1303 return NGX_ERROR; | |
| 1304 } | |
| 1305 | |
| 1306 if ((size_t) n != (size_t) qlen) { | |
| 1307 ngx_log_error(NGX_LOG_CRIT, &rec->log, 0, "send() incomplete"); | |
| 1308 return NGX_ERROR; | |
| 1309 } | |
| 1310 | |
| 1311 return NGX_OK; | |
| 1312 } | |
| 1313 | |
| 1314 | |
| 1315 static ngx_int_t | |
| 1316 ngx_resolver_send_tcp_query(ngx_resolver_t *r, ngx_resolver_connection_t *rec, | |
| 1317 u_char *query, u_short qlen) | |
| 1318 { | |
| 1319 ngx_buf_t *b; | |
| 1320 ngx_int_t rc; | |
| 1321 | |
| 1322 rc = NGX_OK; | |
| 1323 | |
| 1324 if (rec->tcp == NULL) { | |
| 1325 b = rec->read_buf; | |
| 1326 | |
| 1327 if (b == NULL) { | |
| 1328 b = ngx_resolver_calloc(r, sizeof(ngx_buf_t)); | |
| 1329 if (b == NULL) { | |
| 1330 return NGX_ERROR; | |
| 1331 } | |
| 1332 | |
| 1333 b->start = ngx_resolver_alloc(r, NGX_RESOLVER_TCP_RSIZE); | |
| 1334 if (b->start == NULL) { | |
|
6368
d73f77bb5caf
Resolver: fixed possible resource leak introduced in 5a16d40c63de.
Ruslan Ermilov <ru@nginx.com>
parents:
6367
diff
changeset
|
1335 ngx_resolver_free(r, b); |
| 6367 | 1336 return NGX_ERROR; |
| 1337 } | |
| 1338 | |
| 1339 b->end = b->start + NGX_RESOLVER_TCP_RSIZE; | |
| 1340 | |
| 1341 rec->read_buf = b; | |
| 1342 } | |
| 1343 | |
| 1344 b->pos = b->start; | |
| 1345 b->last = b->start; | |
| 1346 | |
| 1347 b = rec->write_buf; | |
| 1348 | |
| 1349 if (b == NULL) { | |
| 1350 b = ngx_resolver_calloc(r, sizeof(ngx_buf_t)); | |
| 1351 if (b == NULL) { | |
| 1352 return NGX_ERROR; | |
| 1353 } | |
| 1354 | |
| 1355 b->start = ngx_resolver_alloc(r, NGX_RESOLVER_TCP_WSIZE); | |
| 1356 if (b->start == NULL) { | |
|
6368
d73f77bb5caf
Resolver: fixed possible resource leak introduced in 5a16d40c63de.
Ruslan Ermilov <ru@nginx.com>
parents:
6367
diff
changeset
|
1357 ngx_resolver_free(r, b); |
| 6367 | 1358 return NGX_ERROR; |
| 1359 } | |
| 1360 | |
| 1361 b->end = b->start + NGX_RESOLVER_TCP_WSIZE; | |
| 1362 | |
| 1363 rec->write_buf = b; | |
| 1364 } | |
| 1365 | |
| 1366 b->pos = b->start; | |
| 1367 b->last = b->start; | |
| 1368 | |
| 1369 rc = ngx_tcp_connect(rec); | |
| 1370 if (rc == NGX_ERROR) { | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1371 return NGX_ERROR; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1372 } |
| 6367 | 1373 |
| 1374 rec->tcp->data = rec; | |
| 1375 rec->tcp->write->handler = ngx_resolver_tcp_write; | |
| 1376 rec->tcp->read->handler = ngx_resolver_tcp_read; | |
| 1377 rec->tcp->read->resolver = 1; | |
| 1378 | |
| 1379 ngx_add_timer(rec->tcp->write, (ngx_msec_t) (r->tcp_timeout * 1000)); | |
| 1649 | 1380 } |
| 6367 | 1381 |
| 1382 b = rec->write_buf; | |
| 1383 | |
| 1384 if (b->end - b->last < 2 + qlen) { | |
| 1385 ngx_log_error(NGX_LOG_CRIT, &rec->log, 0, "buffer overflow"); | |
| 1386 return NGX_ERROR; | |
| 1387 } | |
| 1388 | |
| 1389 *b->last++ = (u_char) (qlen >> 8); | |
| 1390 *b->last++ = (u_char) qlen; | |
| 1391 b->last = ngx_cpymem(b->last, query, qlen); | |
| 1392 | |
| 1393 if (rc == NGX_OK) { | |
| 1394 ngx_resolver_tcp_write(rec->tcp->write); | |
| 1395 } | |
| 1649 | 1396 |
| 1397 return NGX_OK; | |
| 1398 } | |
| 1399 | |
| 1400 | |
| 1401 static void | |
| 1402 ngx_resolver_resend_handler(ngx_event_t *ev) | |
| 1403 { | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1404 time_t timer, atimer, stimer, ntimer; |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1405 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1406 time_t a6timer; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1407 #endif |
| 1649 | 1408 ngx_resolver_t *r; |
| 1409 | |
| 1410 r = ev->data; | |
| 1411 | |
| 1412 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, | |
| 1413 "resolver resend handler"); | |
| 1414 | |
| 1415 /* lock name mutex */ | |
| 1416 | |
| 1417 ntimer = ngx_resolver_resend(r, &r->name_rbtree, &r->name_resend_queue); | |
| 1418 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1419 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
|
1420 |
| 1649 | 1421 /* unlock name mutex */ |
| 1422 | |
| 1423 /* lock addr mutex */ | |
| 1424 | |
| 1425 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
|
1426 |
| 1649 | 1427 /* unlock addr mutex */ |
| 1428 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1429 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1430 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1431 /* lock addr6 mutex */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1432 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1433 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
|
1434 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1435 /* unlock addr6 mutex */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1436 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1437 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1438 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1439 timer = ntimer; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1440 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1441 if (timer == 0) { |
| 1649 | 1442 timer = atimer; |
| 1443 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1444 } else if (atimer) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1445 timer = ngx_min(timer, atimer); |
| 1649 | 1446 } |
| 1447 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1448 if (timer == 0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1449 timer = stimer; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1450 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1451 } else if (stimer) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1452 timer = ngx_min(timer, stimer); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1453 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1454 |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1455 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1456 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1457 if (timer == 0) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1458 timer = a6timer; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1459 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1460 } else if (a6timer) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1461 timer = ngx_min(timer, a6timer); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1462 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1463 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1464 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1465 |
| 1649 | 1466 if (timer) { |
| 1467 ngx_add_timer(r->event, (ngx_msec_t) (timer * 1000)); | |
| 1468 } | |
| 1469 } | |
| 1470 | |
| 1471 | |
| 1472 static time_t | |
| 1473 ngx_resolver_resend(ngx_resolver_t *r, ngx_rbtree_t *tree, ngx_queue_t *queue) | |
| 1474 { | |
| 1475 time_t now; | |
| 1476 ngx_queue_t *q; | |
| 1477 ngx_resolver_node_t *rn; | |
| 1478 | |
| 1479 now = ngx_time(); | |
| 1480 | |
| 1481 for ( ;; ) { | |
| 1482 if (ngx_queue_empty(queue)) { | |
| 1483 return 0; | |
| 1484 } | |
| 1485 | |
| 1486 q = ngx_queue_last(queue); | |
| 1487 | |
| 1488 rn = ngx_queue_data(q, ngx_resolver_node_t, queue); | |
| 1489 | |
| 1490 if (now < rn->expire) { | |
| 1491 return rn->expire - now; | |
| 1492 } | |
| 1493 | |
| 1774 | 1494 ngx_log_debug3(NGX_LOG_DEBUG_CORE, r->log, 0, |
| 1495 "resolver resend \"%*s\" %p", | |
| 1496 (size_t) rn->nlen, rn->name, rn->waiting); | |
| 1649 | 1497 |
| 1498 ngx_queue_remove(q); | |
| 1499 | |
| 1500 if (rn->waiting) { | |
| 1501 | |
|
6366
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1502 if (++rn->last_connection == r->connections.nelts) { |
|
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1503 rn->last_connection = 0; |
|
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1504 } |
|
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1505 |
|
4683
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1506 (void) ngx_resolver_send_query(r, rn); |
|
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1507 |
|
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1508 rn->expire = now + r->resend_timeout; |
|
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1509 |
|
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1510 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
|
1511 |
|
cf4ee321d195
do not delete failed DNS request if there are waiting clients
Igor Sysoev <igor@sysoev.ru>
parents:
1878
diff
changeset
|
1512 continue; |
| 1649 | 1513 } |
| 1514 | |
| 1515 ngx_rbtree_delete(tree, &rn->node); | |
| 1516 | |
| 1517 ngx_resolver_free_node(r, rn); | |
| 1518 } | |
| 1519 } | |
| 1520 | |
| 1521 | |
|
6196
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1522 static ngx_uint_t |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1523 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
|
1524 { |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1525 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
|
1526 && 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
|
1527 #if (NGX_HAVE_INET6) |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1528 && 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
|
1529 #endif |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1530 && 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
|
1531 } |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1532 |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1533 |
| 1649 | 1534 static void |
| 6367 | 1535 ngx_resolver_udp_read(ngx_event_t *rev) |
| 1649 | 1536 { |
| 6367 | 1537 ssize_t n; |
| 1538 ngx_connection_t *c; | |
| 1539 ngx_resolver_connection_t *rec; | |
| 1540 u_char buf[NGX_RESOLVER_UDP_SIZE]; | |
| 1649 | 1541 |
| 1542 c = rev->data; | |
| 6367 | 1543 rec = c->data; |
| 1649 | 1544 |
| 1545 do { | |
| 1689 | 1546 n = ngx_udp_recv(c, buf, NGX_RESOLVER_UDP_SIZE); |
| 1547 | |
| 1548 if (n < 0) { | |
| 1649 | 1549 return; |
| 1550 } | |
| 1551 | |
| 6367 | 1552 ngx_resolver_process_response(rec->resolver, buf, n, 0); |
| 1649 | 1553 |
| 1554 } while (rev->ready); | |
| 1555 } | |
| 1556 | |
| 1557 | |
| 1558 static void | |
| 6367 | 1559 ngx_resolver_tcp_write(ngx_event_t *wev) |
| 1560 { | |
| 1561 off_t sent; | |
| 1562 ssize_t n; | |
| 1563 ngx_buf_t *b; | |
| 1564 ngx_resolver_t *r; | |
| 1565 ngx_connection_t *c; | |
| 1566 ngx_resolver_connection_t *rec; | |
| 1567 | |
| 1568 c = wev->data; | |
| 1569 rec = c->data; | |
| 1570 b = rec->write_buf; | |
| 1571 r = rec->resolver; | |
| 1572 | |
| 1573 if (wev->timedout) { | |
| 1574 goto failed; | |
| 1575 } | |
| 1576 | |
| 1577 sent = c->sent; | |
| 1578 | |
| 1579 while (wev->ready && b->pos < b->last) { | |
| 1580 n = ngx_send(c, b->pos, b->last - b->pos); | |
| 1581 | |
| 1582 if (n == NGX_AGAIN) { | |
| 1583 break; | |
| 1584 } | |
| 1585 | |
| 1586 if (n == NGX_ERROR) { | |
| 1587 goto failed; | |
| 1588 } | |
| 1589 | |
| 1590 b->pos += n; | |
| 1591 } | |
| 1592 | |
| 1593 if (b->pos != b->start) { | |
| 1594 b->last = ngx_movemem(b->start, b->pos, b->last - b->pos); | |
| 1595 b->pos = b->start; | |
| 1596 } | |
| 1597 | |
| 1598 if (c->sent != sent) { | |
| 1599 ngx_add_timer(wev, (ngx_msec_t) (r->tcp_timeout * 1000)); | |
| 1600 } | |
| 1601 | |
| 1602 if (ngx_handle_write_event(wev, 0) != NGX_OK) { | |
| 1603 goto failed; | |
| 1604 } | |
| 1605 | |
| 1606 return; | |
| 1607 | |
| 1608 failed: | |
| 1609 | |
| 1610 ngx_close_connection(c); | |
| 1611 rec->tcp = NULL; | |
| 1612 } | |
| 1613 | |
| 1614 | |
| 1615 static void | |
| 1616 ngx_resolver_tcp_read(ngx_event_t *rev) | |
| 1617 { | |
| 1618 u_char *p; | |
| 1619 size_t size; | |
| 1620 ssize_t n; | |
| 1621 u_short qlen; | |
| 1622 ngx_buf_t *b; | |
| 1623 ngx_resolver_t *r; | |
| 1624 ngx_connection_t *c; | |
| 1625 ngx_resolver_connection_t *rec; | |
| 1626 | |
| 1627 c = rev->data; | |
| 1628 rec = c->data; | |
| 1629 b = rec->read_buf; | |
| 1630 r = rec->resolver; | |
| 1631 | |
| 1632 while (rev->ready) { | |
| 1633 n = ngx_recv(c, b->last, b->end - b->last); | |
| 1634 | |
| 1635 if (n == NGX_AGAIN) { | |
| 1636 break; | |
| 1637 } | |
| 1638 | |
| 1639 if (n == NGX_ERROR || n == 0) { | |
| 1640 goto failed; | |
| 1641 } | |
| 1642 | |
| 1643 b->last += n; | |
| 1644 | |
| 1645 for ( ;; ) { | |
| 1646 p = b->pos; | |
| 1647 size = b->last - p; | |
| 1648 | |
| 1649 if (size < 2) { | |
| 1650 break; | |
| 1651 } | |
| 1652 | |
| 1653 qlen = (u_short) *p++ << 8; | |
| 1654 qlen += *p++; | |
| 1655 | |
| 1656 if (size < (size_t) (2 + qlen)) { | |
| 1657 break; | |
| 1658 } | |
| 1659 | |
| 1660 ngx_resolver_process_response(r, p, qlen, 1); | |
| 1661 | |
| 1662 b->pos += 2 + qlen; | |
| 1663 } | |
| 1664 | |
| 1665 if (b->pos != b->start) { | |
| 1666 b->last = ngx_movemem(b->start, b->pos, b->last - b->pos); | |
| 1667 b->pos = b->start; | |
| 1668 } | |
| 1669 } | |
| 1670 | |
| 1671 if (ngx_handle_read_event(rev, 0) != NGX_OK) { | |
| 1672 goto failed; | |
| 1673 } | |
| 1674 | |
| 1675 return; | |
| 1676 | |
| 1677 failed: | |
| 1678 | |
| 1679 ngx_close_connection(c); | |
| 1680 rec->tcp = NULL; | |
| 1681 } | |
| 1682 | |
| 1683 | |
| 1684 static void | |
| 1685 ngx_resolver_process_response(ngx_resolver_t *r, u_char *buf, size_t n, | |
| 1686 ngx_uint_t tcp) | |
| 1649 | 1687 { |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1688 char *err; |
| 6367 | 1689 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
|
1690 qtype, qclass; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1691 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1692 ngx_uint_t qident6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1693 #endif |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1694 ngx_queue_t *q; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1695 ngx_resolver_qs_t *qs; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1696 ngx_resolver_hdr_t *response; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1697 ngx_resolver_node_t *rn; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1698 |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1699 if (n < sizeof(ngx_resolver_hdr_t)) { |
| 1649 | 1700 goto short_response; |
| 1701 } | |
| 1702 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1703 response = (ngx_resolver_hdr_t *) buf; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1704 |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1705 ident = (response->ident_hi << 8) + response->ident_lo; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1706 flags = (response->flags_hi << 8) + response->flags_lo; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1707 nqs = (response->nqs_hi << 8) + response->nqs_lo; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1708 nan = (response->nan_hi << 8) + response->nan_lo; |
| 6367 | 1709 trunc = flags & 0x0200; |
| 1649 | 1710 |
| 1711 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
|
1712 "resolver DNS response %ui fl:%04Xi %ui/%ui/%ud/%ud", |
| 1649 | 1713 ident, flags, nqs, nan, |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1714 (response->nns_hi << 8) + response->nns_lo, |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1715 (response->nar_hi << 8) + response->nar_lo); |
| 1649 | 1716 |
|
5470
aebdca7e8f8f
Resolver: fixed response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5469
diff
changeset
|
1717 /* response to a standard query */ |
| 6367 | 1718 if ((flags & 0xf870) != 0x8000 || (trunc && tcp)) { |
| 1649 | 1719 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
|
1720 "invalid %s DNS response %ui fl:%04Xi", |
| 6367 | 1721 tcp ? "TCP" : "UDP", ident, flags); |
| 1649 | 1722 return; |
| 1723 } | |
| 1724 | |
|
5470
aebdca7e8f8f
Resolver: fixed response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5469
diff
changeset
|
1725 code = flags & 0xf; |
| 1649 | 1726 |
|
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1727 if (code == NGX_RESOLVE_FORMERR) { |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1728 |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1729 times = 0; |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1730 |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1731 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
|
1732 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
|
1733 q = ngx_queue_next(q)) |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1734 { |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1735 rn = ngx_queue_data(q, ngx_resolver_node_t, queue); |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1736 qident = (rn->query[0] << 8) + rn->query[1]; |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1737 |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1738 if (qident == ident) { |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1739 goto dns_error_name; |
|
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1740 } |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1741 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1742 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1743 if (rn->query6) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1744 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
|
1745 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1746 if (qident6 == ident) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1747 goto dns_error_name; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1748 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1749 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1750 #endif |
|
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1751 } |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1752 |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1753 goto dns_error; |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1754 } |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1755 |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1756 if (code > NGX_RESOLVE_REFUSED) { |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1757 goto dns_error; |
| 1649 | 1758 } |
| 1759 | |
| 1760 if (nqs != 1) { | |
| 1761 err = "invalid number of questions in DNS response"; | |
| 1762 goto done; | |
| 1763 } | |
| 1764 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1765 i = sizeof(ngx_resolver_hdr_t); |
| 1649 | 1766 |
| 1767 while (i < (ngx_uint_t) n) { | |
| 1768 if (buf[i] == '\0') { | |
| 1769 goto found; | |
| 1770 } | |
| 1771 | |
|
5470
aebdca7e8f8f
Resolver: fixed response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5469
diff
changeset
|
1772 i += 1 + buf[i]; |
| 1649 | 1773 } |
| 1774 | |
| 1775 goto short_response; | |
| 1776 | |
| 1777 found: | |
| 1778 | |
|
5470
aebdca7e8f8f
Resolver: fixed response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5469
diff
changeset
|
1779 if (i++ == sizeof(ngx_resolver_hdr_t)) { |
| 1649 | 1780 err = "zero-length domain name in DNS response"; |
| 1781 goto done; | |
| 1782 } | |
| 1783 | |
| 1784 if (i + sizeof(ngx_resolver_qs_t) + nan * (2 + sizeof(ngx_resolver_an_t)) | |
| 1785 > (ngx_uint_t) n) | |
| 1786 { | |
| 1787 goto short_response; | |
| 1788 } | |
| 1789 | |
| 1790 qs = (ngx_resolver_qs_t *) &buf[i]; | |
| 1791 | |
| 1792 qtype = (qs->type_hi << 8) + qs->type_lo; | |
| 1793 qclass = (qs->class_hi << 8) + qs->class_lo; | |
| 1794 | |
| 1795 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
|
1796 "resolver DNS response qt:%ui cl:%ui", qtype, qclass); |
| 1649 | 1797 |
| 1798 if (qclass != 1) { | |
| 1799 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
|
1800 "unknown query class %ui in DNS response", qclass); |
| 1649 | 1801 return; |
| 1802 } | |
| 1803 | |
| 1804 switch (qtype) { | |
| 1805 | |
| 1806 case NGX_RESOLVE_A: | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1807 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1808 case NGX_RESOLVE_AAAA: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1809 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1810 |
| 6367 | 1811 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
|
1812 i + sizeof(ngx_resolver_qs_t)); |
| 1649 | 1813 |
| 1814 break; | |
| 1815 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1816 case NGX_RESOLVE_SRV: |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1817 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1818 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
|
1819 i + sizeof(ngx_resolver_qs_t)); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1820 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1821 break; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1822 |
| 1649 | 1823 case NGX_RESOLVE_PTR: |
| 1824 | |
|
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
1825 ngx_resolver_process_ptr(r, buf, n, ident, code, nan); |
| 1649 | 1826 |
| 1827 break; | |
| 1828 | |
| 1829 default: | |
| 1830 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
|
1831 "unknown query type %ui in DNS response", qtype); |
| 1649 | 1832 return; |
| 1833 } | |
| 1834 | |
| 1835 return; | |
| 1836 | |
| 1837 short_response: | |
| 1838 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1839 err = "short DNS response"; |
| 1649 | 1840 |
| 1841 done: | |
| 1842 | |
| 1843 ngx_log_error(r->log_level, r->log, 0, err); | |
| 1844 | |
| 1845 return; | |
|
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1846 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1847 dns_error_name: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1848 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1849 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
|
1850 "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
|
1851 code, ngx_resolver_strerror(code), ident, |
|
6478
3ef7bb882ad4
Fixed logging with variable field width.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6460
diff
changeset
|
1852 (size_t) rn->nlen, rn->name); |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1853 return; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1854 |
|
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1855 dns_error: |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1856 |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1857 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
|
1858 "DNS error (%ui: %s), query id:%ui", |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1859 code, ngx_resolver_strerror(code), ident); |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1860 return; |
| 1649 | 1861 } |
| 1862 | |
| 1863 | |
| 1864 static void | |
| 6370 | 1865 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
|
1866 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t qtype, |
| 6367 | 1867 ngx_uint_t nan, ngx_uint_t trunc, ngx_uint_t ans) |
| 583 | 1868 { |
| 6367 | 1869 char *err; |
| 1870 u_char *cname; | |
| 1871 size_t len; | |
| 1872 int32_t ttl; | |
| 1873 uint32_t hash; | |
| 1874 in_addr_t *addr; | |
| 1875 ngx_str_t name; | |
| 6370 | 1876 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
|
1877 #if (NGX_HAVE_INET6) |
| 6367 | 1878 struct in6_addr *addr6; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1879 #endif |
| 6367 | 1880 ngx_resolver_an_t *an; |
| 1881 ngx_resolver_ctx_t *ctx, *next; | |
| 1882 ngx_resolver_node_t *rn; | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1883 ngx_resolver_addr_t *addrs; |
| 6367 | 1884 ngx_resolver_connection_t *rec; |
| 1649 | 1885 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1886 if (ngx_resolver_copy(r, &name, buf, |
| 6370 | 1887 buf + sizeof(ngx_resolver_hdr_t), buf + n) |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1888 != NGX_OK) |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1889 { |
| 1649 | 1890 return; |
| 1891 } | |
| 1892 | |
| 1893 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver qs:%V", &name); | |
| 1894 | |
| 1895 hash = ngx_crc32_short(name.data, name.len); | |
| 1896 | |
| 1897 /* lock name mutex */ | |
| 1898 | |
| 1899 rn = ngx_resolver_lookup_name(r, &name, hash); | |
| 1900 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1901 if (rn == NULL) { |
| 1649 | 1902 ngx_log_error(r->log_level, r->log, 0, |
| 1903 "unexpected response for %V", &name); | |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1904 ngx_resolver_free(r, name.data); |
| 1649 | 1905 goto failed; |
| 1906 } | |
| 1907 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1908 switch (qtype) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1909 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1910 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1911 case NGX_RESOLVE_AAAA: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1912 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1913 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
|
1914 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
|
1915 "unexpected response for %V", &name); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1916 ngx_resolver_free(r, name.data); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1917 goto failed; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1918 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1919 |
| 6367 | 1920 if (trunc && rn->tcp6) { |
| 1921 ngx_resolver_free(r, name.data); | |
| 1922 goto failed; | |
| 1923 } | |
| 1924 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1925 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
|
1926 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1927 break; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1928 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1929 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1930 default: /* NGX_RESOLVE_A */ |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1931 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1932 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
|
1933 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
|
1934 "unexpected response for %V", &name); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1935 ngx_resolver_free(r, name.data); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1936 goto failed; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1937 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1938 |
| 6367 | 1939 if (trunc && rn->tcp) { |
| 1940 ngx_resolver_free(r, name.data); | |
| 1941 goto failed; | |
| 1942 } | |
| 1943 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1944 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
|
1945 } |
| 1649 | 1946 |
| 1947 if (ident != qident) { | |
| 1948 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
|
1949 "wrong ident %ui response for %V, expect %ui", |
| 1649 | 1950 ident, &name, qident); |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1951 ngx_resolver_free(r, name.data); |
| 1649 | 1952 goto failed; |
| 1953 } | |
| 1954 | |
| 3139 | 1955 ngx_resolver_free(r, name.data); |
| 1956 | |
| 6367 | 1957 if (trunc) { |
| 1958 | |
| 1959 ngx_queue_remove(&rn->queue); | |
| 1960 | |
| 1961 if (rn->waiting == NULL) { | |
| 1962 ngx_rbtree_delete(&r->name_rbtree, &rn->node); | |
| 1963 ngx_resolver_free_node(r, rn); | |
| 1964 goto next; | |
| 1965 } | |
| 1966 | |
| 1967 rec = r->connections.elts; | |
| 1968 rec = &rec[rn->last_connection]; | |
| 1969 | |
| 1970 switch (qtype) { | |
| 1971 | |
| 1972 #if (NGX_HAVE_INET6) | |
| 1973 case NGX_RESOLVE_AAAA: | |
| 1974 | |
| 1975 rn->tcp6 = 1; | |
| 1976 | |
| 1977 (void) ngx_resolver_send_tcp_query(r, rec, rn->query6, rn->qlen); | |
| 1978 | |
| 1979 break; | |
| 1980 #endif | |
| 1981 | |
| 1982 default: /* NGX_RESOLVE_A */ | |
| 1983 | |
| 1984 rn->tcp = 1; | |
| 1985 | |
| 1986 (void) ngx_resolver_send_tcp_query(r, rec, rn->query, rn->qlen); | |
| 1987 } | |
| 1988 | |
| 1989 rn->expire = ngx_time() + r->resend_timeout; | |
| 1990 | |
| 1991 ngx_queue_insert_head(&r->name_resend_queue, &rn->queue); | |
| 1992 | |
| 1993 goto next; | |
| 1994 } | |
| 1995 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1996 if (code == 0 && rn->code) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1997 code = rn->code; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1998 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1999 |
|
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
2000 if (code == 0 && nan == 0) { |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2001 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2002 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2003 switch (qtype) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2004 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2005 case NGX_RESOLVE_AAAA: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2006 |
|
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2007 rn->naddrs6 = 0; |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2008 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2009 if (rn->naddrs == (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2010 goto next; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2011 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2012 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2013 if (rn->naddrs) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2014 goto export; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2015 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2016 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2017 break; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2018 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2019 default: /* NGX_RESOLVE_A */ |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2020 |
|
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2021 rn->naddrs = 0; |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2022 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2023 if (rn->naddrs6 == (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2024 goto next; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2025 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2026 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2027 if (rn->naddrs6) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2028 goto export; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2029 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2030 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2031 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2032 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2033 code = NGX_RESOLVE_NXDOMAIN; |
|
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
2034 } |
|
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
2035 |
| 1649 | 2036 if (code) { |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2037 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2038 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2039 switch (qtype) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2040 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2041 case NGX_RESOLVE_AAAA: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2042 |
|
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2043 rn->naddrs6 = 0; |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2044 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2045 if (rn->naddrs == (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2046 rn->code = (u_char) code; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2047 goto next; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2048 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2049 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2050 break; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2051 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2052 default: /* NGX_RESOLVE_A */ |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2053 |
|
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2054 rn->naddrs = 0; |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2055 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2056 if (rn->naddrs6 == (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2057 rn->code = (u_char) code; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2058 goto next; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2059 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2060 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2061 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2062 |
| 1649 | 2063 next = rn->waiting; |
| 2064 rn->waiting = NULL; | |
| 2065 | |
| 2066 ngx_queue_remove(&rn->queue); | |
| 2067 | |
| 2068 ngx_rbtree_delete(&r->name_rbtree, &rn->node); | |
| 2069 | |
| 2070 /* unlock name mutex */ | |
| 2071 | |
| 2072 while (next) { | |
|
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2073 ctx = next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2074 ctx->state = code; |
|
6456
c94aba230a5a
Resolver: introduced valid field in resolver responses.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6372
diff
changeset
|
2075 ctx->valid = ngx_time() + (r->valid ? r->valid : 10); |
|
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2076 next = ctx->next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2077 |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2078 ctx->handler(ctx); |
| 1649 | 2079 } |
| 2080 | |
|
5920
7420068c4d4b
Resolver: fixed use-after-free memory access.
Ruslan Ermilov <ru@nginx.com>
parents:
5820
diff
changeset
|
2081 ngx_resolver_free_node(r, rn); |
|
7420068c4d4b
Resolver: fixed use-after-free memory access.
Ruslan Ermilov <ru@nginx.com>
parents:
5820
diff
changeset
|
2082 |
| 1649 | 2083 return; |
| 2084 } | |
| 2085 | |
| 2086 i = ans; | |
| 2087 naddrs = 0; | |
| 2088 cname = NULL; | |
| 2089 | |
| 2090 for (a = 0; a < nan; a++) { | |
| 2091 | |
| 2092 start = i; | |
| 2093 | |
| 6370 | 2094 while (i < n) { |
| 1649 | 2095 |
| 2096 if (buf[i] & 0xc0) { | |
| 2097 i += 2; | |
| 2098 goto found; | |
| 2099 } | |
| 2100 | |
| 2101 if (buf[i] == 0) { | |
| 2102 i++; | |
| 2103 goto test_length; | |
| 2104 } | |
| 2105 | |
| 2106 i += 1 + buf[i]; | |
| 2107 } | |
| 2108 | |
| 2109 goto short_response; | |
| 2110 | |
| 2111 test_length: | |
| 2112 | |
| 2113 if (i - start < 2) { | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2114 err = "invalid name in DNS response"; |
| 1649 | 2115 goto invalid; |
| 2116 } | |
| 2117 | |
| 2118 found: | |
| 2119 | |
| 6370 | 2120 if (i + sizeof(ngx_resolver_an_t) >= n) { |
| 1649 | 2121 goto short_response; |
| 2122 } | |
| 2123 | |
| 2124 an = (ngx_resolver_an_t *) &buf[i]; | |
| 2125 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2126 type = (an->type_hi << 8) + an->type_lo; |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2127 class = (an->class_hi << 8) + an->class_lo; |
| 1649 | 2128 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
|
2129 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
|
2130 + (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
|
2131 |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2132 if (class != 1) { |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2133 ngx_log_error(r->log_level, r->log, 0, |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2134 "unexpected RR class %ui", class); |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2135 goto failed; |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2136 } |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2137 |
|
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2138 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
|
2139 ttl = 0; |
|
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2140 } |
| 1649 | 2141 |
|
5485
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
2142 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
|
2143 |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2144 i += sizeof(ngx_resolver_an_t); |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2145 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2146 switch (type) { |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2147 |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2148 case NGX_RESOLVE_A: |
| 1649 | 2149 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2150 if (qtype != NGX_RESOLVE_A) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2151 err = "unexpected A record in DNS response"; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2152 goto invalid; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2153 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2154 |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2155 if (len != 4) { |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2156 err = "invalid A record in DNS response"; |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2157 goto invalid; |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2158 } |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2159 |
| 6370 | 2160 if (i + 4 > n) { |
| 1649 | 2161 goto short_response; |
| 2162 } | |
| 2163 | |
| 2164 naddrs++; | |
| 2165 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2166 break; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2167 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2168 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2169 case NGX_RESOLVE_AAAA: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2170 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2171 if (qtype != NGX_RESOLVE_AAAA) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2172 err = "unexpected AAAA record in DNS response"; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2173 goto invalid; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2174 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2175 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2176 if (len != 16) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2177 err = "invalid AAAA record in DNS response"; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2178 goto invalid; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2179 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2180 |
| 6370 | 2181 if (i + 16 > n) { |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2182 goto short_response; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2183 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2184 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2185 naddrs++; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2186 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2187 break; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2188 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2189 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2190 case NGX_RESOLVE_CNAME: |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2191 |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2192 cname = &buf[i]; |
| 1965 | 2193 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2194 break; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2195 |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2196 case NGX_RESOLVE_DNAME: |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2197 |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2198 break; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2199 |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2200 default: |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2201 |
| 1966 | 2202 ngx_log_error(r->log_level, r->log, 0, |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2203 "unexpected RR type %ui", type); |
| 1649 | 2204 } |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2205 |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2206 i += len; |
| 1649 | 2207 } |
| 2208 | |
|
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2209 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
|
2210 "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
|
2211 naddrs, cname, rn->ttl); |
| 1649 | 2212 |
| 2213 if (naddrs) { | |
| 2214 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2215 switch (qtype) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2216 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2217 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2218 case NGX_RESOLVE_AAAA: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2219 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2220 if (naddrs == 1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2221 addr6 = &rn->u6.addr6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2222 rn->naddrs6 = 1; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2223 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2224 } else { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2225 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
|
2226 if (addr6 == NULL) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2227 goto failed; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2228 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2229 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2230 rn->u6.addrs6 = addr6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2231 rn->naddrs6 = (u_short) naddrs; |
| 1649 | 2232 } |
| 2233 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2234 #if (NGX_SUPPRESS_WARN) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2235 addr = NULL; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2236 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2237 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2238 break; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2239 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2240 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2241 default: /* NGX_RESOLVE_A */ |
|
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 if (naddrs == 1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2244 addr = &rn->u.addr; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2245 rn->naddrs = 1; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2246 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2247 } else { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2248 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
|
2249 if (addr == NULL) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2250 goto failed; |
|
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 rn->u.addrs = addr; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2254 rn->naddrs = (u_short) naddrs; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2255 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2256 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2257 #if (NGX_HAVE_INET6 && NGX_SUPPRESS_WARN) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2258 addr6 = NULL; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2259 #endif |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2260 } |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2261 |
| 6370 | 2262 j = 0; |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2263 i = ans; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2264 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2265 for (a = 0; a < nan; a++) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2266 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2267 for ( ;; ) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2268 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2269 if (buf[i] & 0xc0) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2270 i += 2; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2271 break; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2272 } |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2273 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2274 if (buf[i] == 0) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2275 i++; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2276 break; |
| 1649 | 2277 } |
| 2278 | |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2279 i += 1 + buf[i]; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2280 } |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2281 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2282 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
|
2283 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2284 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
|
2285 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
|
2286 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2287 i += sizeof(ngx_resolver_an_t); |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2288 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2289 if (type == NGX_RESOLVE_A) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2290 |
| 6370 | 2291 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
|
2292 + (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
|
2293 |
| 6370 | 2294 if (++j == naddrs) { |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2295 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2296 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2297 if (rn->naddrs6 == (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2298 goto next; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2299 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2300 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2301 |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2302 break; |
| 1649 | 2303 } |
| 2304 } | |
| 2305 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2306 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2307 else if (type == NGX_RESOLVE_AAAA) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2308 |
| 6370 | 2309 ngx_memcpy(addr6[j].s6_addr, &buf[i], 16); |
| 2310 | |
| 2311 if (++j == naddrs) { | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2312 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2313 if (rn->naddrs == (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2314 goto next; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2315 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2316 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2317 break; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2318 } |
|
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 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2321 |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2322 i += len; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2323 } |
|
5477
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 |
|
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2326 switch (qtype) { |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2327 |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2328 #if (NGX_HAVE_INET6) |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2329 case NGX_RESOLVE_AAAA: |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2330 |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2331 if (rn->naddrs6 == (u_short) -1) { |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2332 rn->naddrs6 = 0; |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2333 } |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2334 |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2335 break; |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2336 #endif |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2337 |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2338 default: /* NGX_RESOLVE_A */ |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2339 |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2340 if (rn->naddrs == (u_short) -1) { |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2341 rn->naddrs = 0; |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2342 } |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2343 } |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2344 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2345 if (rn->naddrs != (u_short) -1 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2346 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2347 && rn->naddrs6 != (u_short) -1 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2348 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2349 && rn->naddrs |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2350 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2351 + rn->naddrs6 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2352 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2353 > 0) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2354 { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2355 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2356 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2357 export: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2358 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2359 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2360 naddrs = rn->naddrs; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2361 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2362 naddrs += rn->naddrs6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2363 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2364 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2365 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
|
2366 addrs = NULL; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2367 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2368 } else { |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2369 addrs = ngx_resolver_export(r, rn, 0); |
| 1649 | 2370 if (addrs == NULL) { |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2371 goto failed; |
| 1649 | 2372 } |
| 2373 } | |
| 2374 | |
| 2375 ngx_queue_remove(&rn->queue); | |
| 2376 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2377 rn->valid = ngx_time() + (r->valid ? r->valid : (time_t) rn->ttl); |
| 1649 | 2378 rn->expire = ngx_time() + r->expire; |
| 2379 | |
| 2380 ngx_queue_insert_head(&r->name_expire_queue, &rn->queue); | |
| 2381 | |
| 2382 next = rn->waiting; | |
| 2383 rn->waiting = NULL; | |
| 2384 | |
| 2385 /* unlock name mutex */ | |
| 2386 | |
| 2387 while (next) { | |
|
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2388 ctx = next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2389 ctx->state = NGX_OK; |
|
6456
c94aba230a5a
Resolver: introduced valid field in resolver responses.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6372
diff
changeset
|
2390 ctx->valid = rn->valid; |
|
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2391 ctx->naddrs = naddrs; |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2392 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2393 if (addrs == NULL) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2394 ctx->addrs = &ctx->addr; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2395 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
|
2396 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
|
2397 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
|
2398 ctx->sin.sin_family = AF_INET; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2399 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
|
2400 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2401 } else { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2402 ctx->addrs = addrs; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2403 } |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2404 |
|
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2405 next = ctx->next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2406 |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2407 ctx->handler(ctx); |
| 1649 | 2408 } |
| 2409 | |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2410 if (addrs != NULL) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2411 ngx_resolver_free(r, addrs->sockaddr); |
| 1649 | 2412 ngx_resolver_free(r, addrs); |
| 2413 } | |
| 2414 | |
|
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
2415 ngx_resolver_free(r, rn->query); |
|
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
2416 rn->query = NULL; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2417 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2418 rn->query6 = NULL; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2419 #endif |
|
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
2420 |
| 1649 | 2421 return; |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2422 } |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2423 |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2424 if (cname) { |
| 1649 | 2425 |
| 2426 /* CNAME only */ | |
| 2427 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2428 if (rn->naddrs == (u_short) -1 |
|
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 || rn->naddrs6 == (u_short) -1 |
|
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 { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2434 goto next; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2435 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2436 |
| 6370 | 2437 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
|
2438 goto failed; |
| 1649 | 2439 } |
| 2440 | |
| 2441 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, | |
| 2442 "resolver cname:\"%V\"", &name); | |
| 2443 | |
|
1741
0829024c924d
fix segfault if response will have CNAME only
Igor Sysoev <igor@sysoev.ru>
parents:
1689
diff
changeset
|
2444 ngx_queue_remove(&rn->queue); |
|
0829024c924d
fix segfault if response will have CNAME only
Igor Sysoev <igor@sysoev.ru>
parents:
1689
diff
changeset
|
2445 |
| 1649 | 2446 rn->cnlen = (u_short) name.len; |
| 2447 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
|
2448 |
|
5485
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
2449 rn->valid = ngx_time() + (r->valid ? r->valid : (time_t) rn->ttl); |
| 1649 | 2450 rn->expire = ngx_time() + r->expire; |
| 2451 | |
| 2452 ngx_queue_insert_head(&r->name_expire_queue, &rn->queue); | |
| 2453 | |
|
6352
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2454 ngx_resolver_free(r, rn->query); |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2455 rn->query = NULL; |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2456 #if (NGX_HAVE_INET6) |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2457 rn->query6 = NULL; |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2458 #endif |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2459 |
| 1649 | 2460 ctx = rn->waiting; |
| 2461 rn->waiting = NULL; | |
| 2462 | |
| 2463 if (ctx) { | |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
2464 |
|
6352
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2465 if (ctx->recursion++ >= NGX_RESOLVER_MAX_RECURSION) { |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2466 |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2467 /* unlock name mutex */ |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2468 |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2469 do { |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2470 ctx->state = NGX_RESOLVE_NXDOMAIN; |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2471 next = ctx->next; |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2472 |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2473 ctx->handler(ctx); |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2474 |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2475 ctx = next; |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2476 } while (ctx); |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2477 |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2478 return; |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2479 } |
|
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2480 |
|
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
2481 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
|
2482 next->node = NULL; |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
2483 } |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
2484 |
|
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
2485 (void) ngx_resolve_name_locked(r, ctx, &name); |
| 1649 | 2486 } |
| 2487 | |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2488 /* unlock name mutex */ |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2489 |
| 1649 | 2490 return; |
| 2491 } | |
| 2492 | |
| 2493 ngx_log_error(r->log_level, r->log, 0, | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2494 "no A or CNAME types in DNS response"); |
| 1649 | 2495 return; |
| 2496 | |
| 2497 short_response: | |
| 2498 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2499 err = "short DNS response"; |
| 1649 | 2500 |
| 2501 invalid: | |
| 2502 | |
| 2503 /* unlock name mutex */ | |
| 2504 | |
| 2505 ngx_log_error(r->log_level, r->log, 0, err); | |
| 2506 | |
| 2507 return; | |
| 2508 | |
| 2509 failed: | |
| 2510 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2511 next: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2512 |
| 1649 | 2513 /* unlock name mutex */ |
| 2514 | |
| 2515 return; | |
| 2516 } | |
| 2517 | |
| 2518 | |
| 2519 static void | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2520 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
|
2521 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
|
2522 ngx_uint_t trunc, ngx_uint_t ans) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2523 { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2524 char *err; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2525 u_char *cname; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2526 size_t len; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2527 int32_t ttl; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2528 uint32_t hash; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2529 ngx_str_t name; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2530 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
|
2531 ngx_resolver_an_t *an; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2532 ngx_resolver_ctx_t *ctx, *next; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2533 ngx_resolver_srv_t *srvs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2534 ngx_resolver_node_t *rn; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2535 ngx_resolver_connection_t *rec; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2536 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2537 if (ngx_resolver_copy(r, &name, buf, |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2538 buf + sizeof(ngx_resolver_hdr_t), buf + n) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2539 != NGX_OK) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2540 { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2541 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2542 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2543 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2544 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
|
2545 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2546 hash = ngx_crc32_short(name.data, name.len); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2547 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2548 rn = ngx_resolver_lookup_srv(r, &name, hash); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2549 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2550 if (rn == NULL || rn->query == NULL) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2551 ngx_log_error(r->log_level, r->log, 0, |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2552 "unexpected response for %V", &name); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2553 ngx_resolver_free(r, name.data); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2554 goto failed; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2555 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2556 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2557 if (trunc && rn->tcp) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2558 ngx_resolver_free(r, name.data); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2559 goto failed; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2560 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2561 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2562 qident = (rn->query[0] << 8) + rn->query[1]; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2563 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2564 if (ident != qident) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2565 ngx_log_error(r->log_level, r->log, 0, |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2566 "wrong ident %ui response for %V, expect %ui", |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2567 ident, &name, qident); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2568 ngx_resolver_free(r, name.data); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2569 goto failed; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2570 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2571 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2572 ngx_resolver_free(r, name.data); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2573 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2574 if (trunc) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2575 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2576 ngx_queue_remove(&rn->queue); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2577 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2578 if (rn->waiting == NULL) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2579 ngx_rbtree_delete(&r->srv_rbtree, &rn->node); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2580 ngx_resolver_free_node(r, rn); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2581 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2582 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2583 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2584 rec = r->connections.elts; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2585 rec = &rec[rn->last_connection]; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2586 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2587 rn->tcp = 1; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2588 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2589 (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
|
2590 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2591 rn->expire = ngx_time() + r->resend_timeout; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2592 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2593 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
|
2594 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2595 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2596 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2597 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2598 if (code == 0 && rn->code) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2599 code = rn->code; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2600 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2601 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2602 if (code == 0 && nan == 0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2603 code = NGX_RESOLVE_NXDOMAIN; |
|
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 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2606 if (code) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2607 next = rn->waiting; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2608 rn->waiting = NULL; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2609 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2610 ngx_queue_remove(&rn->queue); |
|
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_rbtree_delete(&r->srv_rbtree, &rn->node); |
|
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 while (next) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2615 ctx = next; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2616 ctx->state = code; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2617 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
|
2618 next = ctx->next; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2619 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2620 ctx->handler(ctx); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2621 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2622 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2623 ngx_resolver_free_node(r, rn); |
|
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 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2626 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2627 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2628 i = ans; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2629 nsrvs = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2630 cname = NULL; |
|
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 for (a = 0; a < nan; a++) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2633 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2634 start = i; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2635 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2636 while (i < n) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2637 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2638 if (buf[i] & 0xc0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2639 i += 2; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2640 goto found; |
|
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 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2643 if (buf[i] == 0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2644 i++; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2645 goto test_length; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2646 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2647 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2648 i += 1 + buf[i]; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2649 } |
|
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 goto short_response; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2652 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2653 test_length: |
|
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 if (i - start < 2) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2656 err = "invalid name DNS response"; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2657 goto invalid; |
|
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 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2660 found: |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2661 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2662 if (i + sizeof(ngx_resolver_an_t) >= n) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2663 goto short_response; |
|
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 an = (ngx_resolver_an_t *) &buf[i]; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2667 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2668 type = (an->type_hi << 8) + an->type_lo; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2669 class = (an->class_hi << 8) + an->class_lo; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2670 len = (an->len_hi << 8) + an->len_lo; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2671 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
|
2672 + (an->ttl[2] << 8) + (an->ttl[3]); |
|
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 (class != 1) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2675 ngx_log_error(r->log_level, r->log, 0, |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2676 "unexpected RR class %ui", class); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2677 goto failed; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2678 } |
|
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 if (ttl < 0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2681 ttl = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2682 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2683 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2684 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
|
2685 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2686 i += sizeof(ngx_resolver_an_t); |
|
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 switch (type) { |
|
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 case NGX_RESOLVE_SRV: |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2691 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2692 if (i + 6 > n) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2693 goto short_response; |
|
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 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
|
2697 != NGX_OK) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2698 { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2699 goto failed; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2700 } |
|
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 nsrvs++; |
|
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 break; |
|
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 case NGX_RESOLVE_CNAME: |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2707 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2708 cname = &buf[i]; |
|
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 break; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2711 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2712 case NGX_RESOLVE_DNAME: |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2713 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2714 break; |
|
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 default: |
|
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 ngx_log_error(r->log_level, r->log, 0, |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2719 "unexpected RR type %ui", type); |
|
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 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2722 i += len; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2723 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2724 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2725 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
|
2726 "resolver nsrvs:%ui cname:%p ttl:%uD", |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2727 nsrvs, cname, rn->ttl); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2728 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2729 if (nsrvs) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2730 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2731 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
|
2732 if (srvs == NULL) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2733 goto failed; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2734 } |
|
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 rn->u.srvs = srvs; |
|
6460
034329824dd3
Win32: fixed build after 384154fc634f.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6458
diff
changeset
|
2737 rn->nsrvs = (u_short) nsrvs; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2738 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2739 j = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2740 i = ans; |
|
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 for (a = 0; a < nan; a++) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2743 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2744 for ( ;; ) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2745 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2746 if (buf[i] & 0xc0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2747 i += 2; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2748 break; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2749 } |
|
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 if (buf[i] == 0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2752 i++; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2753 break; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2754 } |
|
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 i += 1 + buf[i]; |
|
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 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2759 an = (ngx_resolver_an_t *) &buf[i]; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2760 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2761 type = (an->type_hi << 8) + an->type_lo; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2762 len = (an->len_hi << 8) + an->len_lo; |
|
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 i += sizeof(ngx_resolver_an_t); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2765 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2766 if (type == NGX_RESOLVE_SRV) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2767 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2768 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
|
2769 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
|
2770 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2771 if (srvs[j].weight == 0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2772 srvs[j].weight = 1; |
|
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 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2775 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
|
2776 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2777 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
|
2778 buf + n) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2779 != NGX_OK) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2780 { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2781 goto failed; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2782 } |
|
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 j++; |
|
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 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2787 i += len; |
|
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 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
|
2791 ngx_resolver_cmp_srvs); |
|
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_resolver_free(r, rn->query); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2794 rn->query = NULL; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2795 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2796 ngx_queue_remove(&rn->queue); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2797 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2798 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
|
2799 rn->expire = ngx_time() + r->expire; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2800 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2801 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
|
2802 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2803 next = rn->waiting; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2804 rn->waiting = NULL; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2805 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2806 while (next) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2807 ctx = next; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2808 next = ctx->next; |
|
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 ngx_resolver_resolve_srv_names(ctx, rn); |
|
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 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2813 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2814 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2815 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2816 rn->nsrvs = 0; |
|
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 if (cname) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2819 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2820 /* CNAME only */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2821 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2822 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
|
2823 goto failed; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2824 } |
|
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 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
|
2827 "resolver cname:\"%V\"", &name); |
|
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 ngx_queue_remove(&rn->queue); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2830 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2831 rn->cnlen = (u_short) name.len; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2832 rn->u.cname = name.data; |
|
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 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
|
2835 rn->expire = ngx_time() + r->expire; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2836 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2837 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
|
2838 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2839 ngx_resolver_free(r, rn->query); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2840 rn->query = NULL; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2841 #if (NGX_HAVE_INET6) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2842 rn->query6 = NULL; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2843 #endif |
|
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 ctx = rn->waiting; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2846 rn->waiting = NULL; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2847 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2848 if (ctx) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2849 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2850 if (ctx->recursion++ >= NGX_RESOLVER_MAX_RECURSION) { |
|
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 /* unlock name mutex */ |
|
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 do { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2855 ctx->state = NGX_RESOLVE_NXDOMAIN; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2856 next = ctx->next; |
|
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 ctx->handler(ctx); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2859 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2860 ctx = next; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2861 } while (ctx); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2862 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2863 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2864 } |
|
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 for (next = ctx; next; next = next->next) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2867 next->node = NULL; |
|
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 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2870 (void) ngx_resolve_name_locked(r, ctx, &name); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2871 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2872 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2873 /* unlock name mutex */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2874 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2875 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2876 } |
|
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_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
|
2879 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2880 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2881 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2882 short_response: |
|
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 err = "short DNS response"; |
|
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 invalid: |
|
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 /* unlock name mutex */ |
|
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 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
|
2891 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2892 return; |
|
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 failed: |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2895 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2896 /* unlock name mutex */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2897 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2898 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2899 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2900 |
|
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 static void |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2903 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
|
2904 { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2905 ngx_uint_t i; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2906 ngx_resolver_t *r; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2907 ngx_resolver_ctx_t *cctx; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2908 ngx_resolver_srv_name_t *srvs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2909 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2910 r = ctx->resolver; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2911 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2912 ctx->node = NULL; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2913 ctx->state = NGX_OK; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2914 ctx->valid = rn->valid; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2915 ctx->count = rn->nsrvs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2916 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2917 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
|
2918 if (srvs == NULL) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2919 goto failed; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2920 } |
|
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 ctx->srvs = srvs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2923 ctx->nsrvs = rn->nsrvs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2924 |
|
6847
d72b38376092
Resolver: fixed handling of partially resolved SRV.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6846
diff
changeset
|
2925 if (ctx->event && ctx->event->timer_set) { |
|
d72b38376092
Resolver: fixed handling of partially resolved SRV.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6846
diff
changeset
|
2926 ngx_del_timer(ctx->event); |
|
d72b38376092
Resolver: fixed handling of partially resolved SRV.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6846
diff
changeset
|
2927 } |
|
d72b38376092
Resolver: fixed handling of partially resolved SRV.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6846
diff
changeset
|
2928 |
|
6860
f18c285c2e59
Win32: fixed some warnings reported by Borland C.
Maxim Dounin <mdounin@mdounin.ru>
parents:
6847
diff
changeset
|
2929 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
|
2930 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
|
2931 if (srvs[i].name.data == NULL) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2932 goto failed; |
|
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 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2935 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
|
2936 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
|
2937 srvs[i].name.len); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2938 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2939 cctx = ngx_resolve_start(r, NULL); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2940 if (cctx == NULL) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2941 goto failed; |
|
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 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2944 cctx->name = srvs[i].name; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2945 cctx->handler = ngx_resolver_srv_names_handler; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2946 cctx->data = ctx; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2947 cctx->srvs = &srvs[i]; |
|
6847
d72b38376092
Resolver: fixed handling of partially resolved SRV.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6846
diff
changeset
|
2948 cctx->timeout = ctx->timeout; |
|
6458
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 srvs[i].priority = rn->u.srvs[i].priority; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2951 srvs[i].weight = rn->u.srvs[i].weight; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2952 srvs[i].port = rn->u.srvs[i].port; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2953 srvs[i].ctx = cctx; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2954 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2955 if (ngx_resolve_name(cctx) == NGX_ERROR) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2956 srvs[i].ctx = NULL; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2957 goto failed; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2958 } |
|
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 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2961 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2962 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2963 failed: |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2964 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2965 ctx->state = NGX_ERROR; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2966 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
|
2967 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2968 ctx->handler(ctx); |
|
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 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2971 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2972 static void |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2973 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
|
2974 { |
|
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
2975 ngx_uint_t i; |
|
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
2976 ngx_addr_t *addrs; |
|
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
2977 ngx_resolver_t *r; |
|
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
2978 ngx_sockaddr_t *sockaddr; |
|
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
2979 ngx_resolver_ctx_t *ctx; |
|
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
2980 ngx_resolver_srv_name_t *srv; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2981 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2982 r = cctx->resolver; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2983 ctx = cctx->data; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2984 srv = cctx->srvs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2985 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2986 ctx->count--; |
|
7040
d49b74a683b1
Resolver: added the "async" flag to resolver context.
Roman Arutyunyan <arut@nginx.com>
parents:
7039
diff
changeset
|
2987 ctx->async |= cctx->async; |
|
6458
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 srv->ctx = NULL; |
|
6714
c3e3de6d2672
Resolver: introduced state field in ngx_resolver_srv_name_t.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6593
diff
changeset
|
2990 srv->state = cctx->state; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2991 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2992 if (cctx->naddrs) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2993 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2994 ctx->valid = ngx_min(ctx->valid, cctx->valid); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2995 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2996 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
|
2997 if (addrs == NULL) { |
|
7048
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
2998 srv->state = NGX_ERROR; |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
2999 goto done; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3000 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3001 |
|
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
3002 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
|
3003 if (sockaddr == NULL) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3004 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
|
3005 srv->state = NGX_ERROR; |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
3006 goto done; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3007 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3008 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3009 for (i = 0; i < cctx->naddrs; i++) { |
|
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
3010 addrs[i].sockaddr = &sockaddr[i].sockaddr; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3011 addrs[i].socklen = cctx->addrs[i].socklen; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3012 |
|
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
3013 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
|
3014 addrs[i].socklen); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3015 |
|
6593
b3b7e33083ac
Introduced ngx_inet_get_port() and ngx_inet_set_port() functions.
Roman Arutyunyan <arut@nginx.com>
parents:
6559
diff
changeset
|
3016 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
|
3017 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3018 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3019 srv->addrs = addrs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3020 srv->naddrs = cctx->naddrs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3021 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3022 |
|
7048
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
3023 done: |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
3024 |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3025 ngx_resolve_name_done(cctx); |
|
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 if (ctx->count == 0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3028 ngx_resolver_report_srv(r, ctx); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3029 } |
|
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 |
|
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 static void |
| 1649 | 3034 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
|
3035 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan) |
| 1649 | 3036 { |
| 3037 char *err; | |
| 3038 size_t len; | |
| 3039 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
|
3040 int32_t ttl; |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3041 ngx_int_t octet; |
| 1649 | 3042 ngx_str_t name; |
|
6371
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3043 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
|
3044 ngx_queue_t *expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3045 ngx_rbtree_t *tree; |
| 1649 | 3046 ngx_resolver_an_t *an; |
| 3047 ngx_resolver_ctx_t *ctx, *next; | |
| 3048 ngx_resolver_node_t *rn; | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3049 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3050 uint32_t hash; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3051 ngx_int_t digit; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3052 struct in6_addr addr6; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3053 #endif |
| 1649 | 3054 |
| 6372 | 3055 if (ngx_resolver_copy(r, &name, buf, |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3056 buf + sizeof(ngx_resolver_hdr_t), buf + n) |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3057 != NGX_OK) |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3058 { |
|
5472
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
3059 return; |
| 1649 | 3060 } |
| 3061 | |
| 6372 | 3062 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver qs:%V", &name); |
| 3063 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3064 /* AF_INET */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3065 |
| 1649 | 3066 addr = 0; |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3067 i = sizeof(ngx_resolver_hdr_t); |
| 1649 | 3068 |
| 3069 for (mask = 0; mask < 32; mask += 8) { | |
| 3070 len = buf[i++]; | |
| 3071 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3072 octet = ngx_atoi(&buf[i], len); |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3073 if (octet == NGX_ERROR || octet > 255) { |
| 1649 | 3074 goto invalid_in_addr_arpa; |
| 3075 } | |
| 3076 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3077 addr += octet << mask; |
| 1649 | 3078 i += len; |
| 3079 } | |
| 3080 | |
|
5479
c0d6eae5a1c5
Resolver: lookups are case-insensitive.
Ruslan Ermilov <ru@nginx.com>
parents:
5478
diff
changeset
|
3081 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
|
3082 i += sizeof("\7in-addr\4arpa"); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3083 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3084 /* lock addr mutex */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3085 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3086 rn = ngx_resolver_lookup_addr(r, addr); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3087 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3088 tree = &r->addr_rbtree; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3089 expire_queue = &r->addr_expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3090 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3091 goto valid; |
| 1649 | 3092 } |
| 3093 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3094 invalid_in_addr_arpa: |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3095 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3096 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3097 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3098 i = sizeof(ngx_resolver_hdr_t); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3099 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3100 for (octet = 15; octet >= 0; octet--) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3101 if (buf[i++] != '\1') { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3102 goto invalid_ip6_arpa; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3103 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3104 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3105 digit = ngx_hextoi(&buf[i++], 1); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3106 if (digit == NGX_ERROR) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3107 goto invalid_ip6_arpa; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3108 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3109 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3110 addr6.s6_addr[octet] = (u_char) digit; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3111 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3112 if (buf[i++] != '\1') { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3113 goto invalid_ip6_arpa; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3114 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3115 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3116 digit = ngx_hextoi(&buf[i++], 1); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3117 if (digit == NGX_ERROR) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3118 goto invalid_ip6_arpa; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3119 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3120 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3121 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
|
3122 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3123 |
|
5479
c0d6eae5a1c5
Resolver: lookups are case-insensitive.
Ruslan Ermilov <ru@nginx.com>
parents:
5478
diff
changeset
|
3124 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
|
3125 i += sizeof("\3ip6\4arpa"); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3126 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3127 /* lock addr mutex */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3128 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3129 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
|
3130 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
|
3131 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3132 tree = &r->addr6_rbtree; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3133 expire_queue = &r->addr6_expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3134 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3135 goto valid; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3136 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3137 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3138 invalid_ip6_arpa: |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3139 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3140 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3141 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
|
3142 "invalid in-addr.arpa or ip6.arpa name in DNS response"); |
| 6372 | 3143 ngx_resolver_free(r, name.data); |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3144 return; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3145 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3146 valid: |
| 1649 | 3147 |
| 3148 if (rn == NULL || rn->query == NULL) { | |
| 3149 ngx_log_error(r->log_level, r->log, 0, | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3150 "unexpected response for %V", &name); |
| 6372 | 3151 ngx_resolver_free(r, name.data); |
| 1649 | 3152 goto failed; |
| 3153 } | |
| 3154 | |
| 3155 qident = (rn->query[0] << 8) + rn->query[1]; | |
| 3156 | |
| 3157 if (ident != qident) { | |
| 3158 ngx_log_error(r->log_level, r->log, 0, | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3159 "wrong ident %ui response for %V, expect %ui", |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3160 ident, &name, qident); |
| 6372 | 3161 ngx_resolver_free(r, name.data); |
| 1649 | 3162 goto failed; |
| 3163 } | |
| 3164 | |
| 6372 | 3165 ngx_resolver_free(r, name.data); |
| 3166 | |
|
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
3167 if (code == 0 && nan == 0) { |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3168 code = NGX_RESOLVE_NXDOMAIN; |
|
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
3169 } |
|
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
3170 |
| 1649 | 3171 if (code) { |
| 3172 next = rn->waiting; | |
| 3173 rn->waiting = NULL; | |
| 3174 | |
| 3175 ngx_queue_remove(&rn->queue); | |
| 3176 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3177 ngx_rbtree_delete(tree, &rn->node); |
| 1649 | 3178 |
| 3179 /* unlock addr mutex */ | |
| 3180 | |
| 3181 while (next) { | |
|
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3182 ctx = next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3183 ctx->state = code; |
|
6456
c94aba230a5a
Resolver: introduced valid field in resolver responses.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6372
diff
changeset
|
3184 ctx->valid = ngx_time() + (r->valid ? r->valid : 10); |
|
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3185 next = ctx->next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3186 |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3187 ctx->handler(ctx); |
| 1649 | 3188 } |
| 3189 | |
|
5920
7420068c4d4b
Resolver: fixed use-after-free memory access.
Ruslan Ermilov <ru@nginx.com>
parents:
5820
diff
changeset
|
3190 ngx_resolver_free_node(r, rn); |
|
7420068c4d4b
Resolver: fixed use-after-free memory access.
Ruslan Ermilov <ru@nginx.com>
parents:
5820
diff
changeset
|
3191 |
| 1649 | 3192 return; |
| 3193 } | |
| 3194 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3195 i += sizeof(ngx_resolver_qs_t); |
| 1649 | 3196 |
|
6371
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3197 for (a = 0; a < nan; a++) { |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3198 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3199 start = i; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3200 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3201 while (i < n) { |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3202 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3203 if (buf[i] & 0xc0) { |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3204 i += 2; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3205 goto found; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3206 } |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3207 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3208 if (buf[i] == 0) { |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3209 i++; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3210 goto test_length; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3211 } |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3212 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3213 i += 1 + buf[i]; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3214 } |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3215 |
| 1649 | 3216 goto short_response; |
|
6371
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3217 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3218 test_length: |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3219 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3220 if (i - start < 2) { |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3221 err = "invalid name in DNS response"; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3222 goto invalid; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3223 } |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3224 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3225 found: |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3226 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3227 if (i + sizeof(ngx_resolver_an_t) >= n) { |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3228 goto short_response; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3229 } |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3230 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3231 an = (ngx_resolver_an_t *) &buf[i]; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3232 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3233 type = (an->type_hi << 8) + an->type_lo; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3234 class = (an->class_hi << 8) + an->class_lo; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3235 len = (an->len_hi << 8) + an->len_lo; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3236 ttl = (an->ttl[0] << 24) + (an->ttl[1] << 16) |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3237 + (an->ttl[2] << 8) + (an->ttl[3]); |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3238 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3239 if (class != 1) { |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3240 ngx_log_error(r->log_level, r->log, 0, |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3241 "unexpected RR class %ui", class); |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3242 goto failed; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3243 } |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3244 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3245 if (ttl < 0) { |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3246 ttl = 0; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3247 } |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3248 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3249 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
|
3250 "resolver qt:%ui cl:%ui len:%uz", |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3251 type, class, len); |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3252 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3253 i += sizeof(ngx_resolver_an_t); |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3254 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3255 switch (type) { |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3256 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3257 case NGX_RESOLVE_PTR: |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3258 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3259 goto ptr; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3260 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3261 case NGX_RESOLVE_CNAME: |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3262 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3263 break; |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3264 |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3265 default: |
|
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 ngx_log_error(r->log_level, r->log, 0, |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3268 "unexpected RR type %ui", type); |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3269 } |
|
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 i += len; |
| 1649 | 3272 } |
| 3273 | |
|
6371
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3274 /* unlock addr mutex */ |
|
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 ngx_log_error(r->log_level, r->log, 0, |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3277 "no PTR type in DNS response"); |
|
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3278 return; |
|
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 ptr: |
| 1649 | 3281 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3282 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
|
3283 goto failed; |
| 1649 | 3284 } |
| 3285 | |
| 3286 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver an:%V", &name); | |
| 3287 | |
|
2486
8de5dc3e7001
use length of uncompressed name
Igor Sysoev <igor@sysoev.ru>
parents:
2484
diff
changeset
|
3288 if (name.len != (size_t) rn->nlen |
|
8de5dc3e7001
use length of uncompressed name
Igor Sysoev <igor@sysoev.ru>
parents:
2484
diff
changeset
|
3289 || ngx_strncmp(name.data, rn->name, name.len) != 0) |
| 1649 | 3290 { |
|
2482
30ec8c5ac75b
fix reverse resolving cache: it stored zero length names
Igor Sysoev <igor@sysoev.ru>
parents:
2314
diff
changeset
|
3291 if (rn->nlen) { |
|
30ec8c5ac75b
fix reverse resolving cache: it stored zero length names
Igor Sysoev <igor@sysoev.ru>
parents:
2314
diff
changeset
|
3292 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
|
3293 } |
|
30ec8c5ac75b
fix reverse resolving cache: it stored zero length names
Igor Sysoev <igor@sysoev.ru>
parents:
2314
diff
changeset
|
3294 |
|
2490
1c87647b7ca5
fix building by msvc, introduced in r2487
Igor Sysoev <igor@sysoev.ru>
parents:
2487
diff
changeset
|
3295 rn->nlen = (u_short) name.len; |
| 1649 | 3296 rn->name = name.data; |
| 3297 | |
|
2486
8de5dc3e7001
use length of uncompressed name
Igor Sysoev <igor@sysoev.ru>
parents:
2484
diff
changeset
|
3298 name.data = ngx_resolver_dup(r, rn->name, name.len); |
| 1649 | 3299 if (name.data == NULL) { |
| 3300 goto failed; | |
| 3301 } | |
| 3302 } | |
| 3303 | |
| 3304 ngx_queue_remove(&rn->queue); | |
| 3305 | |
|
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
3306 rn->valid = ngx_time() + (r->valid ? r->valid : ttl); |
| 1649 | 3307 rn->expire = ngx_time() + r->expire; |
| 3308 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3309 ngx_queue_insert_head(expire_queue, &rn->queue); |
| 1649 | 3310 |
| 3311 next = rn->waiting; | |
| 3312 rn->waiting = NULL; | |
| 3313 | |
| 3314 /* unlock addr mutex */ | |
| 3315 | |
| 3316 while (next) { | |
|
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3317 ctx = next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3318 ctx->state = NGX_OK; |
|
6456
c94aba230a5a
Resolver: introduced valid field in resolver responses.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6372
diff
changeset
|
3319 ctx->valid = rn->valid; |
|
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3320 ctx->name = name; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3321 next = ctx->next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3322 |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3323 ctx->handler(ctx); |
| 1649 | 3324 } |
| 3325 | |
| 3326 ngx_resolver_free(r, name.data); | |
| 3327 | |
| 3328 return; | |
| 3329 | |
| 3330 short_response: | |
| 3331 | |
| 3332 err = "short DNS response"; | |
| 3333 | |
| 3334 invalid: | |
| 3335 | |
| 3336 /* unlock addr mutex */ | |
| 3337 | |
| 3338 ngx_log_error(r->log_level, r->log, 0, err); | |
| 3339 | |
| 3340 return; | |
| 3341 | |
| 3342 failed: | |
| 3343 | |
| 3344 /* unlock addr mutex */ | |
| 3345 | |
| 3346 return; | |
| 3347 } | |
| 3348 | |
| 3349 | |
| 3350 static ngx_resolver_node_t * | |
| 3351 ngx_resolver_lookup_name(ngx_resolver_t *r, ngx_str_t *name, uint32_t hash) | |
| 3352 { | |
| 3353 ngx_int_t rc; | |
| 3354 ngx_rbtree_node_t *node, *sentinel; | |
| 3355 ngx_resolver_node_t *rn; | |
| 3356 | |
| 3357 node = r->name_rbtree.root; | |
| 3358 sentinel = r->name_rbtree.sentinel; | |
| 3359 | |
| 3360 while (node != sentinel) { | |
| 3361 | |
| 3362 if (hash < node->key) { | |
| 3363 node = node->left; | |
| 3364 continue; | |
| 3365 } | |
| 3366 | |
| 3367 if (hash > node->key) { | |
| 3368 node = node->right; | |
| 3369 continue; | |
| 3370 } | |
| 3371 | |
| 3372 /* hash == node->key */ | |
| 3373 | |
|
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
3374 rn = ngx_resolver_node(node); |
|
4497
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
3375 |
|
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
3376 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
|
3377 |
|
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
3378 if (rc == 0) { |
|
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
3379 return rn; |
|
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
3380 } |
|
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
3381 |
|
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
3382 node = (rc < 0) ? node->left : node->right; |
| 1649 | 3383 } |
| 3384 | |
| 3385 /* not found */ | |
| 3386 | |
| 3387 return NULL; | |
| 3388 } | |
| 3389 | |
| 3390 | |
| 3391 static ngx_resolver_node_t * | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3392 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
|
3393 { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3394 ngx_int_t rc; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3395 ngx_rbtree_node_t *node, *sentinel; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3396 ngx_resolver_node_t *rn; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3397 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3398 node = r->srv_rbtree.root; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3399 sentinel = r->srv_rbtree.sentinel; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3400 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3401 while (node != sentinel) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3402 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3403 if (hash < node->key) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3404 node = node->left; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3405 continue; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3406 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3407 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3408 if (hash > node->key) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3409 node = node->right; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3410 continue; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3411 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3412 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3413 /* hash == node->key */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3414 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3415 rn = ngx_resolver_node(node); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3416 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3417 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
|
3418 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3419 if (rc == 0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3420 return rn; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3421 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3422 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3423 node = (rc < 0) ? node->left : node->right; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3424 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3425 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3426 /* not found */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3427 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3428 return NULL; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3429 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3430 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3431 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3432 static ngx_resolver_node_t * |
| 1649 | 3433 ngx_resolver_lookup_addr(ngx_resolver_t *r, in_addr_t addr) |
| 3434 { | |
| 3435 ngx_rbtree_node_t *node, *sentinel; | |
| 3436 | |
| 3437 node = r->addr_rbtree.root; | |
| 3438 sentinel = r->addr_rbtree.sentinel; | |
| 3439 | |
| 3440 while (node != sentinel) { | |
| 3441 | |
| 3442 if (addr < node->key) { | |
| 3443 node = node->left; | |
| 3444 continue; | |
| 3445 } | |
| 3446 | |
| 3447 if (addr > node->key) { | |
| 3448 node = node->right; | |
| 3449 continue; | |
| 3450 } | |
| 3451 | |
| 3452 /* addr == node->key */ | |
| 3453 | |
|
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
3454 return ngx_resolver_node(node); |
| 1649 | 3455 } |
| 3456 | |
| 3457 /* not found */ | |
| 3458 | |
| 3459 return NULL; | |
| 3460 } | |
| 3461 | |
| 3462 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3463 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3464 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3465 static ngx_resolver_node_t * |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3466 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
|
3467 uint32_t hash) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3468 { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3469 ngx_int_t rc; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3470 ngx_rbtree_node_t *node, *sentinel; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3471 ngx_resolver_node_t *rn; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3472 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3473 node = r->addr6_rbtree.root; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3474 sentinel = r->addr6_rbtree.sentinel; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3475 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3476 while (node != sentinel) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3477 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3478 if (hash < node->key) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3479 node = node->left; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3480 continue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3481 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3482 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3483 if (hash > node->key) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3484 node = node->right; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3485 continue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3486 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3487 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3488 /* hash == node->key */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3489 |
|
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
3490 rn = ngx_resolver_node(node); |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3491 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3492 rc = ngx_memcmp(addr, &rn->addr6, 16); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3493 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3494 if (rc == 0) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3495 return rn; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3496 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3497 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3498 node = (rc < 0) ? node->left : node->right; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3499 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3500 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3501 /* not found */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3502 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3503 return NULL; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3504 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3505 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3506 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3507 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3508 |
| 1649 | 3509 static void |
| 3510 ngx_resolver_rbtree_insert_value(ngx_rbtree_node_t *temp, | |
| 3511 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel) | |
| 3512 { | |
| 3513 ngx_rbtree_node_t **p; | |
| 3514 ngx_resolver_node_t *rn, *rn_temp; | |
| 3515 | |
| 3516 for ( ;; ) { | |
| 3517 | |
| 3518 if (node->key < temp->key) { | |
| 3519 | |
| 3520 p = &temp->left; | |
| 3521 | |
| 3522 } else if (node->key > temp->key) { | |
| 3523 | |
| 3524 p = &temp->right; | |
| 3525 | |
| 3526 } else { /* node->key == temp->key */ | |
| 3527 | |
|
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
3528 rn = ngx_resolver_node(node); |
|
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
3529 rn_temp = ngx_resolver_node(temp); |
| 1649 | 3530 |
|
3143
ab6258e18099
fix resolver cache rbtree comparison
Igor Sysoev <igor@sysoev.ru>
parents:
3139
diff
changeset
|
3531 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
|
3532 < 0) ? &temp->left : &temp->right; |
| 1649 | 3533 } |
| 3534 | |
| 3535 if (*p == sentinel) { | |
| 3536 break; | |
| 3537 } | |
| 3538 | |
| 3539 temp = *p; | |
| 3540 } | |
| 3541 | |
| 3542 *p = node; | |
| 3543 node->parent = temp; | |
| 3544 node->left = sentinel; | |
| 3545 node->right = sentinel; | |
| 3546 ngx_rbt_red(node); | |
| 3547 } | |
| 3548 | |
| 3549 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3550 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3551 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3552 static void |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3553 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
|
3554 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
|
3555 { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3556 ngx_rbtree_node_t **p; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3557 ngx_resolver_node_t *rn, *rn_temp; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3558 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3559 for ( ;; ) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3560 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3561 if (node->key < temp->key) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3562 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3563 p = &temp->left; |
|
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 } else if (node->key > temp->key) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3566 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3567 p = &temp->right; |
|
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 } else { /* node->key == temp->key */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3570 |
|
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
3571 rn = ngx_resolver_node(node); |
|
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
3572 rn_temp = ngx_resolver_node(temp); |
|
5476
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 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
|
3575 < 0) ? &temp->left : &temp->right; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3576 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3577 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3578 if (*p == sentinel) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3579 break; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3580 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3581 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3582 temp = *p; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3583 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3584 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3585 *p = node; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3586 node->parent = temp; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3587 node->left = sentinel; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3588 node->right = sentinel; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3589 ngx_rbt_red(node); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3590 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3591 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3592 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3593 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3594 |
| 1649 | 3595 static ngx_int_t |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3596 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
|
3597 ngx_str_t *name) |
| 1649 | 3598 { |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3599 u_char *p, *s; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3600 size_t len, nlen; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3601 ngx_uint_t ident; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3602 ngx_resolver_qs_t *qs; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3603 ngx_resolver_hdr_t *query; |
| 1649 | 3604 |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3605 nlen = name->len ? (1 + name->len + 1) : 1; |
|
3306
61bdaac6c668
fix resolving an empty name (".")
Igor Sysoev <igor@sysoev.ru>
parents:
3299
diff
changeset
|
3606 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3607 len = sizeof(ngx_resolver_hdr_t) + nlen + sizeof(ngx_resolver_qs_t); |
| 1649 | 3608 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3609 #if (NGX_HAVE_INET6) |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3610 p = ngx_resolver_alloc(r, r->ipv6 ? len * 2 : len); |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3611 #else |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3612 p = ngx_resolver_alloc(r, len); |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3613 #endif |
| 1649 | 3614 if (p == NULL) { |
| 3615 return NGX_ERROR; | |
| 3616 } | |
| 3617 | |
| 3618 rn->qlen = (u_short) len; | |
| 3619 rn->query = p; | |
| 3620 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3621 #if (NGX_HAVE_INET6) |
|
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
3622 if (r->ipv6) { |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
3623 rn->query6 = p + len; |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
3624 } |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3625 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3626 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3627 query = (ngx_resolver_hdr_t *) p; |
| 1649 | 3628 |
| 3629 ident = ngx_random(); | |
| 3630 | |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3631 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
|
3632 "resolve: \"%V\" A %i", name, ident & 0xffff); |
| 1649 | 3633 |
| 3634 query->ident_hi = (u_char) ((ident >> 8) & 0xff); | |
| 3635 query->ident_lo = (u_char) (ident & 0xff); | |
| 3636 | |
| 3637 /* recursion query */ | |
| 3638 query->flags_hi = 1; query->flags_lo = 0; | |
| 3639 | |
| 3640 /* one question */ | |
| 3641 query->nqs_hi = 0; query->nqs_lo = 1; | |
| 3642 query->nan_hi = 0; query->nan_lo = 0; | |
| 3643 query->nns_hi = 0; query->nns_lo = 0; | |
| 3644 query->nar_hi = 0; query->nar_lo = 0; | |
| 3645 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3646 p += sizeof(ngx_resolver_hdr_t) + nlen; |
| 1649 | 3647 |
| 3648 qs = (ngx_resolver_qs_t *) p; | |
| 3649 | |
| 3650 /* query type */ | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3651 qs->type_hi = 0; qs->type_lo = NGX_RESOLVE_A; |
| 1649 | 3652 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3653 /* IN query class */ |
| 1649 | 3654 qs->class_hi = 0; qs->class_lo = 1; |
| 3655 | |
| 3656 /* convert "www.example.com" to "\3www\7example\3com\0" */ | |
| 3657 | |
| 3658 len = 0; | |
| 3659 p--; | |
| 3660 *p-- = '\0'; | |
| 3661 | |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3662 if (name->len == 0) { |
|
4610
778d2cc03e22
Fixed segmentation fault in ngx_resolver_create_name_query().
Ruslan Ermilov <ru@nginx.com>
parents:
4556
diff
changeset
|
3663 return NGX_DECLINED; |
|
778d2cc03e22
Fixed segmentation fault in ngx_resolver_create_name_query().
Ruslan Ermilov <ru@nginx.com>
parents:
4556
diff
changeset
|
3664 } |
|
778d2cc03e22
Fixed segmentation fault in ngx_resolver_create_name_query().
Ruslan Ermilov <ru@nginx.com>
parents:
4556
diff
changeset
|
3665 |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3666 for (s = name->data + name->len - 1; s >= name->data; s--) { |
| 1649 | 3667 if (*s != '.') { |
| 3668 *p = *s; | |
| 3669 len++; | |
| 3670 | |
| 3671 } else { | |
|
4556
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
3672 if (len == 0 || len > 255) { |
|
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
3673 return NGX_DECLINED; |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
3674 } |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
3675 |
| 1649 | 3676 *p = (u_char) len; |
| 3677 len = 0; | |
| 3678 } | |
| 3679 | |
| 3680 p--; | |
| 3681 } | |
| 3682 | |
|
4556
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
3683 if (len == 0 || len > 255) { |
|
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
3684 return NGX_DECLINED; |
|
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
3685 } |
|
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
3686 |
| 1649 | 3687 *p = (u_char) len; |
| 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) { |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
3691 return NGX_OK; |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
3692 } |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
3693 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3694 p = rn->query6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3695 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3696 ngx_memcpy(p, rn->query, rn->qlen); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3697 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3698 query = (ngx_resolver_hdr_t *) p; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3699 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3700 ident = ngx_random(); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3701 |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3702 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
|
3703 "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
|
3704 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3705 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
|
3706 query->ident_lo = (u_char) (ident & 0xff); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3707 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3708 p += sizeof(ngx_resolver_hdr_t) + nlen; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3709 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3710 qs = (ngx_resolver_qs_t *) p; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3711 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3712 qs->type_lo = NGX_RESOLVE_AAAA; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3713 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3714 |
| 1649 | 3715 return NGX_OK; |
| 3716 } | |
| 3717 | |
| 3718 | |
| 3719 static ngx_int_t | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3720 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
|
3721 ngx_str_t *name) |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3722 { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3723 u_char *p, *s; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3724 size_t len, nlen; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3725 ngx_uint_t ident; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3726 ngx_resolver_qs_t *qs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3727 ngx_resolver_hdr_t *query; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3728 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3729 nlen = name->len ? (1 + name->len + 1) : 1; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3730 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3731 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
|
3732 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3733 p = ngx_resolver_alloc(r, len); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3734 if (p == NULL) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3735 return NGX_ERROR; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3736 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3737 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3738 rn->qlen = (u_short) len; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3739 rn->query = p; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3740 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3741 query = (ngx_resolver_hdr_t *) p; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3742 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3743 ident = ngx_random(); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3744 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3745 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
|
3746 "resolve: \"%V\" SRV %i", name, ident & 0xffff); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3747 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3748 query->ident_hi = (u_char) ((ident >> 8) & 0xff); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3749 query->ident_lo = (u_char) (ident & 0xff); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3750 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3751 /* recursion query */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3752 query->flags_hi = 1; query->flags_lo = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3753 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3754 /* one question */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3755 query->nqs_hi = 0; query->nqs_lo = 1; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3756 query->nan_hi = 0; query->nan_lo = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3757 query->nns_hi = 0; query->nns_lo = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3758 query->nar_hi = 0; query->nar_lo = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3759 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3760 p += sizeof(ngx_resolver_hdr_t) + nlen; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3761 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3762 qs = (ngx_resolver_qs_t *) p; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3763 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3764 /* query type */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3765 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
|
3766 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3767 /* IN query class */ |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3768 qs->class_hi = 0; qs->class_lo = 1; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3769 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3770 /* 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
|
3771 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3772 len = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3773 p--; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3774 *p-- = '\0'; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3775 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3776 if (name->len == 0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3777 return NGX_DECLINED; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3778 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3779 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3780 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
|
3781 if (*s != '.') { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3782 *p = *s; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3783 len++; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3784 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3785 } else { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3786 if (len == 0 || len > 255) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3787 return NGX_DECLINED; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3788 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3789 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3790 *p = (u_char) len; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3791 len = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3792 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3793 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3794 p--; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3795 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3796 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3797 if (len == 0 || len > 255) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3798 return NGX_DECLINED; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3799 } |
|
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 *p = (u_char) len; |
|
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 return NGX_OK; |
|
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 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3806 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3807 static ngx_int_t |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3808 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
|
3809 ngx_resolver_addr_t *addr) |
| 1649 | 3810 { |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3811 u_char *p, *d; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3812 size_t len; |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3813 in_addr_t inaddr; |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3814 ngx_int_t n; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3815 ngx_uint_t ident; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3816 ngx_resolver_hdr_t *query; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3817 struct sockaddr_in *sin; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3818 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3819 struct sockaddr_in6 *sin6; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3820 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3821 |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3822 switch (addr->sockaddr->sa_family) { |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3823 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3824 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3825 case AF_INET6: |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3826 len = sizeof(ngx_resolver_hdr_t) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3827 + 64 + sizeof(".ip6.arpa.") - 1 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3828 + sizeof(ngx_resolver_qs_t); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3829 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3830 break; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3831 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3832 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3833 default: /* AF_INET */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3834 len = sizeof(ngx_resolver_hdr_t) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3835 + 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
|
3836 + sizeof(ngx_resolver_qs_t); |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
3837 } |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3838 |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3839 p = ngx_resolver_alloc(r, len); |
| 1649 | 3840 if (p == NULL) { |
| 3841 return NGX_ERROR; | |
| 3842 } | |
| 3843 | |
| 3844 rn->query = p; | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3845 query = (ngx_resolver_hdr_t *) p; |
| 1649 | 3846 |
| 3847 ident = ngx_random(); | |
| 3848 | |
| 3849 query->ident_hi = (u_char) ((ident >> 8) & 0xff); | |
| 3850 query->ident_lo = (u_char) (ident & 0xff); | |
| 3851 | |
| 3852 /* recursion query */ | |
| 3853 query->flags_hi = 1; query->flags_lo = 0; | |
| 3854 | |
| 3855 /* one question */ | |
| 3856 query->nqs_hi = 0; query->nqs_lo = 1; | |
| 3857 query->nan_hi = 0; query->nan_lo = 0; | |
| 3858 query->nns_hi = 0; query->nns_lo = 0; | |
| 3859 query->nar_hi = 0; query->nar_lo = 0; | |
| 3860 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3861 p += sizeof(ngx_resolver_hdr_t); |
| 1649 | 3862 |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3863 switch (addr->sockaddr->sa_family) { |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3864 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3865 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3866 case AF_INET6: |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3867 sin6 = (struct sockaddr_in6 *) addr->sockaddr; |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3868 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3869 for (n = 15; n >= 0; n--) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3870 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
|
3871 sin6->sin6_addr.s6_addr[n] & 0xf, |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3872 (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
|
3873 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3874 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3875 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
|
3876 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3877 break; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3878 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3879 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3880 default: /* AF_INET */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3881 |
|
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3882 sin = (struct sockaddr_in *) addr->sockaddr; |
|
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3883 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
|
3884 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3885 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
|
3886 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
|
3887 *p = (u_char) (d - &p[1]); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3888 p = d; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3889 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3890 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3891 p = ngx_cpymem(p, "\7in-addr\4arpa\0", 14); |
| 1649 | 3892 } |
| 3893 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3894 /* query type "PTR", IN query class */ |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3895 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
|
3896 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3897 rn->qlen = (u_short) (p - rn->query); |
| 1649 | 3898 |
| 3899 return NGX_OK; | |
| 3900 } | |
| 3901 | |
| 3902 | |
| 3903 static ngx_int_t | |
| 3904 ngx_resolver_copy(ngx_resolver_t *r, ngx_str_t *name, u_char *buf, u_char *src, | |
| 3905 u_char *last) | |
| 3906 { | |
| 3907 char *err; | |
| 3908 u_char *p, *dst; | |
| 3909 ssize_t len; | |
| 3910 ngx_uint_t i, n; | |
| 3911 | |
| 3912 p = src; | |
| 3913 len = -1; | |
| 3914 | |
| 3915 /* | |
| 3916 * compression pointers allow to create endless loop, so we set limit; | |
| 3917 * 128 pointers should be enough to store 255-byte name | |
| 3918 */ | |
| 3919 | |
| 3920 for (i = 0; i < 128; i++) { | |
| 3921 n = *p++; | |
| 3922 | |
| 3923 if (n == 0) { | |
| 3924 goto done; | |
| 3925 } | |
| 3926 | |
| 3927 if (n & 0xc0) { | |
|
2314
52987a023486
fix compression pointer for big (>255) DNS responses
Igor Sysoev <igor@sysoev.ru>
parents:
2282
diff
changeset
|
3928 n = ((n & 0x3f) << 8) + *p; |
| 1649 | 3929 p = &buf[n]; |
| 3930 | |
| 3931 } else { | |
| 3932 len += 1 + n; | |
| 3933 p = &p[n]; | |
| 3934 } | |
| 3935 | |
| 3936 if (p >= last) { | |
| 3937 err = "name is out of response"; | |
| 3938 goto invalid; | |
| 3939 } | |
| 3940 } | |
| 3941 | |
| 3942 err = "compression pointers loop"; | |
| 3943 | |
| 3944 invalid: | |
| 3945 | |
| 3946 ngx_log_error(r->log_level, r->log, 0, err); | |
| 3947 | |
| 3948 return NGX_ERROR; | |
| 3949 | |
| 3950 done: | |
| 3951 | |
| 3952 if (name == NULL) { | |
| 583 | 3953 return NGX_OK; |
| 3954 } | |
| 3955 | |
|
3298
847ab5a32307
fix "PTR ." case in address resolver
Igor Sysoev <igor@sysoev.ru>
parents:
3297
diff
changeset
|
3956 if (len == -1) { |
|
5764
f166c521b619
Style: use ngx_str_null().
Tatsuhiko Kubo <cubicdaiya@gmail.com>
parents:
5600
diff
changeset
|
3957 ngx_str_null(name); |
|
3298
847ab5a32307
fix "PTR ." case in address resolver
Igor Sysoev <igor@sysoev.ru>
parents:
3297
diff
changeset
|
3958 return NGX_OK; |
|
847ab5a32307
fix "PTR ." case in address resolver
Igor Sysoev <igor@sysoev.ru>
parents:
3297
diff
changeset
|
3959 } |
|
847ab5a32307
fix "PTR ." case in address resolver
Igor Sysoev <igor@sysoev.ru>
parents:
3297
diff
changeset
|
3960 |
| 1649 | 3961 dst = ngx_resolver_alloc(r, len); |
| 3962 if (dst == NULL) { | |
| 3963 return NGX_ERROR; | |
| 3964 } | |
| 3965 | |
| 3966 name->data = dst; | |
| 3967 | |
| 3968 n = *src++; | |
| 3969 | |
| 3970 for ( ;; ) { | |
|
4267
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
3971 if (n & 0xc0) { |
|
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
3972 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
|
3973 src = &buf[n]; |
|
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
3974 |
|
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
3975 n = *src++; |
|
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
3976 |
|
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
3977 } else { |
|
5479
c0d6eae5a1c5
Resolver: lookups are case-insensitive.
Ruslan Ermilov <ru@nginx.com>
parents:
5478
diff
changeset
|
3978 ngx_strlow(dst, src, n); |
| 1649 | 3979 dst += n; |
| 3980 src += n; | |
| 3981 | |
| 3982 n = *src++; | |
| 3983 | |
| 3984 if (n != 0) { | |
| 3985 *dst++ = '.'; | |
| 3986 } | |
| 3987 } | |
| 3988 | |
| 3989 if (n == 0) { | |
| 3990 name->len = dst - name->data; | |
| 3991 return NGX_OK; | |
| 3992 } | |
| 3993 } | |
| 3994 } | |
| 3995 | |
| 3996 | |
|
7051
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
3997 static ngx_int_t |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
3998 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
|
3999 { |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4000 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
|
4001 return NGX_OK; |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4002 } |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4003 |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4004 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
|
4005 if (ctx->event == NULL) { |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4006 return NGX_ERROR; |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4007 } |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4008 |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4009 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
|
4010 ctx->event->data = ctx; |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4011 ctx->event->log = r->log; |
|
7052
70e65bf8dfd7
Resolver: cancelable resend timer event.
Ruslan Ermilov <ru@nginx.com>
parents:
7051
diff
changeset
|
4012 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
|
4013 ctx->ident = -1; |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4014 |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4015 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
|
4016 |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4017 return NGX_OK; |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4018 } |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4019 |
|
137c5be7df09
Resolver: factored out setting a timer for resolver timeout.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7048
diff
changeset
|
4020 |
| 1649 | 4021 static void |
| 4022 ngx_resolver_timeout_handler(ngx_event_t *ev) | |
| 4023 { | |
|
6348
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
4024 ngx_resolver_ctx_t *ctx; |
|
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
4025 |
|
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
4026 ctx = ev->data; |
|
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
4027 |
|
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
4028 ctx->state = NGX_RESOLVE_TIMEDOUT; |
|
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
4029 |
|
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
4030 ctx->handler(ctx); |
| 1649 | 4031 } |
| 4032 | |
| 4033 | |
| 4034 static void | |
| 4035 ngx_resolver_free_node(ngx_resolver_t *r, ngx_resolver_node_t *rn) | |
| 4036 { | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4037 ngx_uint_t i; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4038 |
| 1649 | 4039 /* lock alloc mutex */ |
| 4040 | |
| 4041 if (rn->query) { | |
| 4042 ngx_resolver_free_locked(r, rn->query); | |
| 4043 } | |
| 4044 | |
| 4045 if (rn->name) { | |
| 4046 ngx_resolver_free_locked(r, rn->name); | |
| 4047 } | |
| 4048 | |
| 4049 if (rn->cnlen) { | |
| 4050 ngx_resolver_free_locked(r, rn->u.cname); | |
| 4051 } | |
| 4052 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4053 if (rn->naddrs > 1 && rn->naddrs != (u_short) -1) { |
| 1649 | 4054 ngx_resolver_free_locked(r, rn->u.addrs); |
| 4055 } | |
| 4056 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4057 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4058 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
|
4059 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
|
4060 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4061 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4062 |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4063 if (rn->nsrvs) { |
|
6860
f18c285c2e59
Win32: fixed some warnings reported by Borland C.
Maxim Dounin <mdounin@mdounin.ru>
parents:
6847
diff
changeset
|
4064 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
|
4065 if (rn->u.srvs[i].name.data) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4066 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
|
4067 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4068 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4069 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4070 ngx_resolver_free_locked(r, rn->u.srvs); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4071 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4072 |
| 1649 | 4073 ngx_resolver_free_locked(r, rn); |
| 4074 | |
| 4075 /* unlock alloc mutex */ | |
| 4076 } | |
| 4077 | |
| 4078 | |
| 4079 static void * | |
| 4080 ngx_resolver_alloc(ngx_resolver_t *r, size_t size) | |
| 4081 { | |
| 4082 u_char *p; | |
| 4083 | |
| 4084 /* lock alloc mutex */ | |
| 4085 | |
| 4086 p = ngx_alloc(size, r->log); | |
| 4087 | |
| 4088 /* unlock alloc mutex */ | |
| 4089 | |
| 4090 return p; | |
| 4091 } | |
| 4092 | |
| 4093 | |
| 1903 | 4094 static void * |
| 1649 | 4095 ngx_resolver_calloc(ngx_resolver_t *r, size_t size) |
| 4096 { | |
| 4097 u_char *p; | |
| 4098 | |
| 4099 p = ngx_resolver_alloc(r, size); | |
| 4100 | |
| 4101 if (p) { | |
| 4102 ngx_memzero(p, size); | |
| 4103 } | |
| 4104 | |
| 4105 return p; | |
| 4106 } | |
| 4107 | |
| 4108 | |
| 4109 static void | |
| 4110 ngx_resolver_free(ngx_resolver_t *r, void *p) | |
| 4111 { | |
| 4112 /* lock alloc mutex */ | |
| 4113 | |
| 4114 ngx_free(p); | |
| 4115 | |
| 4116 /* unlock alloc mutex */ | |
| 4117 } | |
| 4118 | |
| 4119 | |
| 4120 static void | |
| 4121 ngx_resolver_free_locked(ngx_resolver_t *r, void *p) | |
| 4122 { | |
| 4123 ngx_free(p); | |
| 4124 } | |
| 4125 | |
| 4126 | |
| 4127 static void * | |
| 4128 ngx_resolver_dup(ngx_resolver_t *r, void *src, size_t size) | |
| 4129 { | |
| 4130 void *dst; | |
| 4131 | |
| 4132 dst = ngx_resolver_alloc(r, size); | |
| 4133 | |
| 4134 if (dst == NULL) { | |
| 4135 return dst; | |
| 4136 } | |
| 4137 | |
| 4138 ngx_memcpy(dst, src, size); | |
| 4139 | |
| 4140 return dst; | |
| 4141 } | |
| 4142 | |
| 4143 | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4144 static ngx_resolver_addr_t * |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4145 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
|
4146 ngx_uint_t rotate) |
|
4871
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4147 { |
|
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4148 ngx_uint_t d, i, j, n; |
|
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4149 in_addr_t *addr; |
|
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4150 ngx_sockaddr_t *sockaddr; |
|
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4151 struct sockaddr_in *sin; |
|
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4152 ngx_resolver_addr_t *dst; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4153 #if (NGX_HAVE_INET6) |
|
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4154 struct in6_addr *addr6; |
|
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4155 struct sockaddr_in6 *sin6; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4156 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4157 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4158 n = rn->naddrs; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4159 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4160 n += rn->naddrs6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4161 #endif |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
4162 |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4163 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
|
4164 if (dst == NULL) { |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
4165 return NULL; |
|
4892
063ac68d89dc
Resolver: added missing memory allocation error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4871
diff
changeset
|
4166 } |
|
063ac68d89dc
Resolver: added missing memory allocation error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4871
diff
changeset
|
4167 |
|
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4168 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
|
4169 if (sockaddr == NULL) { |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
4170 ngx_resolver_free(r, dst); |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
4171 return NULL; |
|
4871
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4172 } |
|
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4173 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4174 i = 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4175 d = rotate ? ngx_random() % n : 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4176 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4177 if (rn->naddrs) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4178 j = rotate ? ngx_random() % rn->naddrs : 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4179 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4180 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
|
4181 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4182 do { |
|
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4183 sin = &sockaddr[d].sockaddr_in; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4184 sin->sin_family = AF_INET; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4185 sin->sin_addr.s_addr = addr[j++]; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4186 dst[d].sockaddr = (struct sockaddr *) sin; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4187 dst[d++].socklen = sizeof(struct sockaddr_in); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4188 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4189 if (d == n) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4190 d = 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4191 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4192 |
|
6860
f18c285c2e59
Win32: fixed some warnings reported by Borland C.
Maxim Dounin <mdounin@mdounin.ru>
parents:
6847
diff
changeset
|
4193 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
|
4194 j = 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4195 } |
|
6860
f18c285c2e59
Win32: fixed some warnings reported by Borland C.
Maxim Dounin <mdounin@mdounin.ru>
parents:
6847
diff
changeset
|
4196 } 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
|
4197 } |
|
4871
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4198 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4199 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4200 if (rn->naddrs6) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4201 j = rotate ? ngx_random() % rn->naddrs6 : 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4202 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4203 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
|
4204 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4205 do { |
|
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4206 sin6 = &sockaddr[d].sockaddr_in6; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4207 sin6->sin6_family = AF_INET6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4208 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
|
4209 dst[d].sockaddr = (struct sockaddr *) sin6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4210 dst[d++].socklen = sizeof(struct sockaddr_in6); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4211 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4212 if (d == n) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4213 d = 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4214 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4215 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4216 if (j == rn->naddrs6) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4217 j = 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4218 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4219 } while (++i < n); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4220 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4221 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4222 |
|
4871
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4223 return dst; |
|
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4224 } |
|
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4225 |
|
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4226 |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4227 static void |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4228 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
|
4229 { |
|
6460
034329824dd3
Win32: fixed build after 384154fc634f.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6458
diff
changeset
|
4230 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
|
4231 ngx_resolver_addr_t *addrs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4232 ngx_resolver_srv_name_t *srvs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4233 |
|
7048
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
4234 srvs = ctx->srvs; |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
4235 nsrvs = ctx->nsrvs; |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
4236 |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4237 naddrs = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4238 |
|
7048
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
4239 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
|
4240 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
|
4241 ctx->state = NGX_ERROR; |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
4242 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
|
4243 |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
4244 ctx->handler(ctx); |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
4245 return; |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
4246 } |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
4247 |
|
80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Roman Arutyunyan <arut@nginx.com>
parents:
7040
diff
changeset
|
4248 naddrs += srvs[i].naddrs; |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4249 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4250 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4251 if (naddrs == 0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4252 ctx->state = NGX_RESOLVE_NXDOMAIN; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4253 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
|
4254 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4255 ctx->handler(ctx); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4256 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4257 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4258 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4259 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
|
4260 if (addrs == NULL) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4261 ctx->state = NGX_ERROR; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4262 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
|
4263 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4264 ctx->handler(ctx); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4265 return; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4266 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4267 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4268 i = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4269 n = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4270 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4271 do { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4272 nw = 0; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4273 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4274 for (j = i; j < nsrvs; j++) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4275 if (srvs[j].priority != srvs[i].priority) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4276 break; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4277 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4278 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4279 nw += srvs[j].naddrs * srvs[j].weight; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4280 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4281 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4282 if (nw == 0) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4283 goto next_srv; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4284 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4285 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4286 w = ngx_random() % nw; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4287 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4288 for (k = i; k < j; k++) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4289 if (w < srvs[k].naddrs * srvs[k].weight) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4290 break; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4291 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4292 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4293 w -= srvs[k].naddrs * srvs[k].weight; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4294 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4295 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4296 for (l = i; l < j; l++) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4297 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4298 for (m = 0; m < srvs[k].naddrs; m++) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4299 addrs[n].socklen = srvs[k].addrs[m].socklen; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4300 addrs[n].sockaddr = srvs[k].addrs[m].sockaddr; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4301 addrs[n].name = srvs[k].name; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4302 addrs[n].priority = srvs[k].priority; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4303 addrs[n].weight = srvs[k].weight; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4304 n++; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4305 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4306 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4307 if (++k == j) { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4308 k = i; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4309 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4310 } |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4311 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4312 next_srv: |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4313 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4314 i = j; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4315 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4316 } while (i < ctx->nsrvs); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4317 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4318 ctx->state = NGX_OK; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4319 ctx->addrs = addrs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4320 ctx->naddrs = naddrs; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4321 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4322 ctx->handler(ctx); |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4323 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4324 ngx_resolver_free(r, addrs); |
|
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 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4327 |
| 1649 | 4328 char * |
| 4329 ngx_resolver_strerror(ngx_int_t err) | |
| 4330 { | |
| 4331 static char *errors[] = { | |
| 4332 "Format error", /* FORMERR */ | |
| 4333 "Server failure", /* SERVFAIL */ | |
| 4334 "Host not found", /* NXDOMAIN */ | |
| 4335 "Unimplemented", /* NOTIMP */ | |
| 4336 "Operation refused" /* REFUSED */ | |
| 4337 }; | |
| 4338 | |
| 4339 if (err > 0 && err < 6) { | |
| 4340 return errors[err - 1]; | |
| 4341 } | |
| 4342 | |
| 4343 if (err == NGX_RESOLVE_TIMEDOUT) { | |
| 4344 return "Operation timed out"; | |
| 4345 } | |
| 4346 | |
| 4347 return "Unknown error"; | |
| 4348 } | |
| 4349 | |
| 4350 | |
|
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4351 static u_char * |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4352 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
|
4353 { |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4354 u_char *p; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4355 ngx_resolver_connection_t *rec; |
|
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4356 |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4357 p = buf; |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4358 |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4359 if (log->action) { |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4360 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
|
4361 len -= p - buf; |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4362 } |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4363 |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4364 rec = log->data; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4365 |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4366 if (rec) { |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4367 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
|
4368 } |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4369 |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4370 return p; |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4371 } |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4372 |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4373 |
|
6922
a72886067bbb
Added missing static specifiers.
Eran Kornblau <erankor@gmail.com>
parents:
6860
diff
changeset
|
4374 static ngx_int_t |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4375 ngx_udp_connect(ngx_resolver_connection_t *rec) |
| 1649 | 4376 { |
| 4377 int rc; | |
| 4378 ngx_int_t event; | |
| 4379 ngx_event_t *rev, *wev; | |
| 4380 ngx_socket_t s; | |
| 4381 ngx_connection_t *c; | |
| 4382 | |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4383 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
|
4384 |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4385 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, &rec->log, 0, "UDP socket %d", s); |
| 583 | 4386 |
|
5360
3d2d3e1cf427
Win32: MinGW GCC compatibility.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4892
diff
changeset
|
4387 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
|
4388 ngx_log_error(NGX_LOG_ALERT, &rec->log, ngx_socket_errno, |
| 583 | 4389 ngx_socket_n " failed"); |
| 4390 return NGX_ERROR; | |
| 4391 } | |
| 4392 | |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4393 c = ngx_get_connection(s, &rec->log); |
| 583 | 4394 |
| 4395 if (c == NULL) { | |
| 4396 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
|
4397 ngx_log_error(NGX_LOG_ALERT, &rec->log, ngx_socket_errno, |
| 583 | 4398 ngx_close_socket_n "failed"); |
| 4399 } | |
| 4400 | |
| 4401 return NGX_ERROR; | |
| 4402 } | |
| 4403 | |
| 1649 | 4404 if (ngx_nonblocking(s) == -1) { |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4405 ngx_log_error(NGX_LOG_ALERT, &rec->log, ngx_socket_errno, |
| 1649 | 4406 ngx_nonblocking_n " failed"); |
| 4407 | |
|
5582
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4408 goto failed; |
| 1649 | 4409 } |
| 4410 | |
| 583 | 4411 rev = c->read; |
| 4412 wev = c->write; | |
| 4413 | |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4414 rev->log = &rec->log; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4415 wev->log = &rec->log; |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4416 |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4417 rec->udp = c; |
| 583 | 4418 |
| 4419 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1); | |
| 4420 | |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4421 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
|
4422 "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
|
4423 |
|
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4424 rc = connect(s, rec->sockaddr, rec->socklen); |
| 1649 | 4425 |
|
6125
4dc8e7b62216
Removed the obsolete aio module.
Ruslan Ermilov <ru@nginx.com>
parents:
5921
diff
changeset
|
4426 /* TODO: iocp */ |
| 583 | 4427 |
| 4428 if (rc == -1) { | |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4429 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
|
4430 "connect() failed"); |
| 583 | 4431 |
|
5582
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4432 goto failed; |
| 583 | 4433 } |
| 4434 | |
| 1649 | 4435 /* UDP sockets are always ready to write */ |
| 4436 wev->ready = 1; | |
| 4437 | |
|
6126
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
4438 event = (ngx_event_flags & NGX_USE_CLEAR_EVENT) ? |
|
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
4439 /* kqueue, epoll */ NGX_CLEAR_EVENT: |
|
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
4440 /* select, poll, /dev/poll */ NGX_LEVEL_EVENT; |
|
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
4441 /* eventport event type has no meaning: oneshot only */ |
|
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
4442 |
|
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
4443 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
|
4444 goto failed; |
| 583 | 4445 } |
| 4446 | |
| 4447 return NGX_OK; | |
|
5582
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4448 |
|
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4449 failed: |
|
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4450 |
|
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4451 ngx_close_connection(c); |
|
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4452 rec->udp = NULL; |
|
5582
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4453 |
|
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4454 return NGX_ERROR; |
| 583 | 4455 } |
| 6367 | 4456 |
| 4457 | |
|
6922
a72886067bbb
Added missing static specifiers.
Eran Kornblau <erankor@gmail.com>
parents:
6860
diff
changeset
|
4458 static ngx_int_t |
| 6367 | 4459 ngx_tcp_connect(ngx_resolver_connection_t *rec) |
| 4460 { | |
| 4461 int rc; | |
| 4462 ngx_int_t event; | |
| 4463 ngx_err_t err; | |
| 4464 ngx_uint_t level; | |
| 4465 ngx_socket_t s; | |
| 4466 ngx_event_t *rev, *wev; | |
| 4467 ngx_connection_t *c; | |
| 4468 | |
| 4469 s = ngx_socket(rec->sockaddr->sa_family, SOCK_STREAM, 0); | |
| 4470 | |
| 4471 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, &rec->log, 0, "TCP socket %d", s); | |
| 4472 | |
| 4473 if (s == (ngx_socket_t) -1) { | |
| 4474 ngx_log_error(NGX_LOG_ALERT, &rec->log, ngx_socket_errno, | |
| 4475 ngx_socket_n " failed"); | |
| 4476 return NGX_ERROR; | |
| 4477 } | |
| 4478 | |
| 4479 c = ngx_get_connection(s, &rec->log); | |
| 4480 | |
| 4481 if (c == NULL) { | |
| 4482 if (ngx_close_socket(s) == -1) { | |
| 4483 ngx_log_error(NGX_LOG_ALERT, &rec->log, ngx_socket_errno, | |
| 4484 ngx_close_socket_n "failed"); | |
| 4485 } | |
| 4486 | |
| 4487 return NGX_ERROR; | |
| 4488 } | |
| 4489 | |
| 4490 if (ngx_nonblocking(s) == -1) { | |
| 4491 ngx_log_error(NGX_LOG_ALERT, &rec->log, ngx_socket_errno, | |
| 4492 ngx_nonblocking_n " failed"); | |
| 4493 | |
| 4494 goto failed; | |
| 4495 } | |
| 4496 | |
| 4497 rev = c->read; | |
| 4498 wev = c->write; | |
| 4499 | |
| 4500 rev->log = &rec->log; | |
| 4501 wev->log = &rec->log; | |
| 4502 | |
| 4503 rec->tcp = c; | |
| 4504 | |
| 4505 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1); | |
| 4506 | |
| 4507 if (ngx_add_conn) { | |
| 4508 if (ngx_add_conn(c) == NGX_ERROR) { | |
| 4509 goto failed; | |
| 4510 } | |
| 4511 } | |
| 4512 | |
| 4513 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, &rec->log, 0, | |
| 4514 "connect to %V, fd:%d #%uA", &rec->server, s, c->number); | |
| 4515 | |
| 4516 rc = connect(s, rec->sockaddr, rec->socklen); | |
| 4517 | |
| 4518 if (rc == -1) { | |
| 4519 err = ngx_socket_errno; | |
| 4520 | |
| 4521 | |
| 4522 if (err != NGX_EINPROGRESS | |
| 4523 #if (NGX_WIN32) | |
| 4524 /* Winsock returns WSAEWOULDBLOCK (NGX_EAGAIN) */ | |
| 4525 && err != NGX_EAGAIN | |
| 4526 #endif | |
| 4527 ) | |
| 4528 { | |
| 4529 if (err == NGX_ECONNREFUSED | |
| 4530 #if (NGX_LINUX) | |
| 4531 /* | |
| 4532 * Linux returns EAGAIN instead of ECONNREFUSED | |
| 4533 * for unix sockets if listen queue is full | |
| 4534 */ | |
| 4535 || err == NGX_EAGAIN | |
| 4536 #endif | |
| 4537 || err == NGX_ECONNRESET | |
| 4538 || err == NGX_ENETDOWN | |
| 4539 || err == NGX_ENETUNREACH | |
| 4540 || err == NGX_EHOSTDOWN | |
| 4541 || err == NGX_EHOSTUNREACH) | |
| 4542 { | |
| 4543 level = NGX_LOG_ERR; | |
| 4544 | |
| 4545 } else { | |
| 4546 level = NGX_LOG_CRIT; | |
| 4547 } | |
| 4548 | |
| 4549 ngx_log_error(level, c->log, err, "connect() to %V failed", | |
| 4550 &rec->server); | |
| 4551 | |
| 4552 ngx_close_connection(c); | |
| 4553 rec->tcp = NULL; | |
| 4554 | |
| 4555 return NGX_ERROR; | |
| 4556 } | |
| 4557 } | |
| 4558 | |
| 4559 if (ngx_add_conn) { | |
| 4560 if (rc == -1) { | |
| 4561 | |
| 4562 /* NGX_EINPROGRESS */ | |
| 4563 | |
| 4564 return NGX_AGAIN; | |
| 4565 } | |
| 4566 | |
| 4567 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, &rec->log, 0, "connected"); | |
| 4568 | |
| 4569 wev->ready = 1; | |
| 4570 | |
| 4571 return NGX_OK; | |
| 4572 } | |
| 4573 | |
| 4574 if (ngx_event_flags & NGX_USE_IOCP_EVENT) { | |
| 4575 | |
| 4576 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, &rec->log, ngx_socket_errno, | |
| 4577 "connect(): %d", rc); | |
| 4578 | |
| 4579 if (ngx_blocking(s) == -1) { | |
| 4580 ngx_log_error(NGX_LOG_ALERT, &rec->log, ngx_socket_errno, | |
| 4581 ngx_blocking_n " failed"); | |
| 4582 goto failed; | |
| 4583 } | |
| 4584 | |
| 4585 /* | |
| 4586 * FreeBSD's aio allows to post an operation on non-connected socket. | |
| 4587 * NT does not support it. | |
| 4588 * | |
| 4589 * TODO: check in Win32, etc. As workaround we can use NGX_ONESHOT_EVENT | |
| 4590 */ | |
| 4591 | |
| 4592 rev->ready = 1; | |
| 4593 wev->ready = 1; | |
| 4594 | |
| 4595 return NGX_OK; | |
| 4596 } | |
| 4597 | |
| 4598 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) { | |
| 4599 | |
| 4600 /* kqueue */ | |
| 4601 | |
| 4602 event = NGX_CLEAR_EVENT; | |
| 4603 | |
| 4604 } else { | |
| 4605 | |
| 4606 /* select, poll, /dev/poll */ | |
| 4607 | |
| 4608 event = NGX_LEVEL_EVENT; | |
| 4609 } | |
| 4610 | |
| 4611 if (ngx_add_event(rev, NGX_READ_EVENT, event) != NGX_OK) { | |
| 4612 goto failed; | |
| 4613 } | |
| 4614 | |
| 4615 if (rc == -1) { | |
| 4616 | |
| 4617 /* NGX_EINPROGRESS */ | |
| 4618 | |
| 4619 if (ngx_add_event(wev, NGX_WRITE_EVENT, event) != NGX_OK) { | |
| 4620 goto failed; | |
| 4621 } | |
| 4622 | |
| 4623 return NGX_AGAIN; | |
| 4624 } | |
| 4625 | |
| 4626 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, &rec->log, 0, "connected"); | |
| 4627 | |
| 4628 wev->ready = 1; | |
| 4629 | |
| 4630 return NGX_OK; | |
| 4631 | |
| 4632 failed: | |
| 4633 | |
| 4634 ngx_close_connection(c); | |
| 4635 rec->tcp = NULL; | |
| 4636 | |
| 4637 return NGX_ERROR; | |
| 4638 } | |
|
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4639 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4640 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4641 static ngx_int_t |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4642 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
|
4643 { |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4644 ngx_int_t p1, p2; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4645 ngx_resolver_srv_t *first, *second; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4646 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4647 first = (ngx_resolver_srv_t *) one; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4648 second = (ngx_resolver_srv_t *) two; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4649 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4650 p1 = first->priority; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4651 p2 = second->priority; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4652 |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4653 return p1 - p2; |
|
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4654 } |