annotate src/core/ngx_resolver.c @ 644:ad25218fd14b NGINX_1_0_12

nginx 1.0.12 *) Feature: the "TLSv1.1" and "TLSv1.2" parameters of the "ssl_protocols" directive. *) Feature: the "if" SSI command supports captures in regular expressions. *) Bugfix: the "if" SSI command did not work inside the "block" command. *) Bugfix: in AIO error handling on FreeBSD. *) Bugfix: in the OpenSSL library initialization. *) Bugfix: the "worker_cpu_affinity" directive might not work. *) Bugfix: the "limit_conn_log_level" and "limit_req_log_level" directives might not work. *) Bugfix: the "read_ahead" directive might not work combined with "try_files" and "open_file_cache". *) Bugfix: the "proxy_cache_use_stale" directive with "error" parameter did not return answer from cache if there were no live upstreams. *) Bugfix: a segmentation fault might occur in a worker process if small time was used in the "inactive" parameter of the "proxy_cache_path" directive. *) Bugfix: responses from cache might hang. *) Bugfix: in error handling while connecting to a backend. Thanks to Piotr Sikora. *) Bugfix: in the "epoll" event method. Thanks to Yichun Zhang. *) Bugfix: the $sent_http_cache_control variable might contain a wrong value if the "expires" directive was used. Thanks to Yichun Zhang. *) Bugfix: the "limit_rate" directive did not allow to use full throughput, even if limit value was very high. *) Bugfix: the "sendfile_max_chunk" directive did not work, if the "limit_rate" directive was used. *) Bugfix: nginx could not be built on Solaris; the bug had appeared in 1.0.11. *) Bugfix: in the ngx_http_scgi_module. *) Bugfix: in the ngx_http_mp4_module.
author Igor Sysoev <http://sysoev.ru>
date Mon, 06 Feb 2012 00:00:00 +0400
parents 97a1e05203c2
children 09a689c5e494
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 * Copyright (C) Nginx, Inc.
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5 */
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7
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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10 #include <ngx_event.h>
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13 #define NGX_RESOLVER_UDP_SIZE 4096
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16 typedef struct {
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17 u_char ident_hi;
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18 u_char ident_lo;
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19 u_char flags_hi;
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20 u_char flags_lo;
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21 u_char nqs_hi;
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22 u_char nqs_lo;
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23 u_char nan_hi;
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24 u_char nan_lo;
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25 u_char nns_hi;
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26 u_char nns_lo;
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27 u_char nar_hi;
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28 u_char nar_lo;
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29 } ngx_resolver_query_t;
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32 typedef struct {
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33 u_char type_hi;
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34 u_char type_lo;
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35 u_char class_hi;
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36 u_char class_lo;
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37 } ngx_resolver_qs_t;
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40 typedef struct {
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41 u_char type_hi;
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42 u_char type_lo;
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43 u_char class_hi;
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44 u_char class_lo;
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45 u_char ttl[4];
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46 u_char len_hi;
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47 u_char len_lo;
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48 } ngx_resolver_an_t;
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49
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51 ngx_int_t ngx_udp_connect(ngx_udp_connection_t *uc);
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54 static void ngx_resolver_cleanup(void *data);
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55 static void ngx_resolver_cleanup_tree(ngx_resolver_t *r, ngx_rbtree_t *tree);
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56 static ngx_int_t ngx_resolve_name_locked(ngx_resolver_t *r,
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57 ngx_resolver_ctx_t *ctx);
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58 static void ngx_resolver_expire(ngx_resolver_t *r, ngx_rbtree_t *tree,
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59 ngx_queue_t *queue);
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60 static ngx_int_t ngx_resolver_send_query(ngx_resolver_t *r,
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61 ngx_resolver_node_t *rn);
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62 static ngx_int_t ngx_resolver_create_name_query(ngx_resolver_node_t *rn,
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63 ngx_resolver_ctx_t *ctx);
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64 static ngx_int_t ngx_resolver_create_addr_query(ngx_resolver_node_t *rn,
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65 ngx_resolver_ctx_t *ctx);
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66 static void ngx_resolver_resend_handler(ngx_event_t *ev);
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67 static time_t ngx_resolver_resend(ngx_resolver_t *r, ngx_rbtree_t *tree,
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68 ngx_queue_t *queue);
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69 static void ngx_resolver_read_response(ngx_event_t *rev);
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70 static void ngx_resolver_process_response(ngx_resolver_t *r, u_char *buf,
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71 size_t n);
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72 static void ngx_resolver_process_a(ngx_resolver_t *r, u_char *buf, size_t n,
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73 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan, ngx_uint_t ans);
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74 static void ngx_resolver_process_ptr(ngx_resolver_t *r, u_char *buf, size_t n,
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75 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan);
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76 static ngx_resolver_node_t *ngx_resolver_lookup_name(ngx_resolver_t *r,
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77 ngx_str_t *name, uint32_t hash);
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78 static ngx_resolver_node_t *ngx_resolver_lookup_addr(ngx_resolver_t *r,
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79 in_addr_t addr);
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80 static void ngx_resolver_rbtree_insert_value(ngx_rbtree_node_t *temp,
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81 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel);
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82 static ngx_int_t ngx_resolver_copy(ngx_resolver_t *r, ngx_str_t *name,
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83 u_char *buf, u_char *src, u_char *last);
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84 static void ngx_resolver_timeout_handler(ngx_event_t *ev);
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85 static void ngx_resolver_free_node(ngx_resolver_t *r, ngx_resolver_node_t *rn);
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86 static void *ngx_resolver_alloc(ngx_resolver_t *r, size_t size);
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87 static void *ngx_resolver_calloc(ngx_resolver_t *r, size_t size);
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88 static void ngx_resolver_free(ngx_resolver_t *r, void *p);
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89 static void ngx_resolver_free_locked(ngx_resolver_t *r, void *p);
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90 static void *ngx_resolver_dup(ngx_resolver_t *r, void *src, size_t size);
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91 static u_char *ngx_resolver_log_error(ngx_log_t *log, u_char *buf, size_t len);
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93
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94 ngx_resolver_t *
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95 ngx_resolver_create(ngx_conf_t *cf, ngx_addr_t *addr)
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96 {
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97 ngx_resolver_t *r;
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98 ngx_pool_cleanup_t *cln;
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99 ngx_udp_connection_t *uc;
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100
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101 cln = ngx_pool_cleanup_add(cf->pool, 0);
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102 if (cln == NULL) {
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103 return NULL;
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104 }
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105
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106 cln->handler = ngx_resolver_cleanup;
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107
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108 r = ngx_calloc(sizeof(ngx_resolver_t), cf->log);
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109 if (r == NULL) {
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110 return NULL;
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111 }
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112
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113 cln->data = r;
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114
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115 r->event = ngx_calloc(sizeof(ngx_event_t), cf->log);
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116 if (r->event == NULL) {
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117 return NULL;
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118 }
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119
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120 ngx_rbtree_init(&r->name_rbtree, &r->name_sentinel,
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121 ngx_resolver_rbtree_insert_value);
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122
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123 ngx_rbtree_init(&r->addr_rbtree, &r->addr_sentinel,
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124 ngx_rbtree_insert_value);
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125
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126 ngx_queue_init(&r->name_resend_queue);
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127 ngx_queue_init(&r->addr_resend_queue);
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128
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129 ngx_queue_init(&r->name_expire_queue);
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130 ngx_queue_init(&r->addr_expire_queue);
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131
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132 r->event->handler = ngx_resolver_resend_handler;
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diff changeset
133 r->event->data = r;
484
ed5e10fb40fc nginx 0.7.54
Igor Sysoev <http://sysoev.ru>
parents: 442
diff changeset
134 r->event->log = &cf->cycle->new_log;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
135 r->ident = -1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
136
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
137 r->resend_timeout = 5;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
138 r->expire = 30;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
139 r->valid = 300;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
140
484
ed5e10fb40fc nginx 0.7.54
Igor Sysoev <http://sysoev.ru>
parents: 442
diff changeset
141 r->log = &cf->cycle->new_log;
598
be70f83b184f nginx 0.8.51
Igor Sysoev <http://sysoev.ru>
parents: 582
diff changeset
142 r->log_level = NGX_LOG_ERR;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
143
354
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
144 if (addr) {
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
145 uc = ngx_calloc(sizeof(ngx_udp_connection_t), cf->log);
354
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
146 if (uc == NULL) {
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
147 return NULL;
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
148 }
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
149
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
150 r->udp_connection = uc;
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
151
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
152 uc->sockaddr = addr->sockaddr;
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
153 uc->socklen = addr->socklen;
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
154 uc->server = addr->name;
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
155
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
156 uc->log = cf->cycle->new_log;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
157 uc->log.handler = ngx_resolver_log_error;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
158 uc->log.data = uc;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
159 uc->log.action = "resolving";
354
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
160 }
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
161
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
162 return r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
163 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
164
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
165
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
166 static void
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
167 ngx_resolver_cleanup(void *data)
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
168 {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
169 ngx_resolver_t *r = data;
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
170
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
171 if (r) {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
172 ngx_log_debug0(NGX_LOG_DEBUG_CORE, ngx_cycle->log, 0,
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
173 "cleanup resolver");
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
174
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
175 ngx_resolver_cleanup_tree(r, &r->name_rbtree);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
176
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
177 ngx_resolver_cleanup_tree(r, &r->addr_rbtree);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
178
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
179 if (r->event) {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
180 ngx_free(r->event);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
181 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
182
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
183 if (r->udp_connection) {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
184 if (r->udp_connection->connection) {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
185 ngx_close_connection(r->udp_connection->connection);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
186 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
187
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
188 ngx_free(r->udp_connection);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
189 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
190
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
191 ngx_free(r);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
192 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
193 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
194
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
195
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
196 static void
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
197 ngx_resolver_cleanup_tree(ngx_resolver_t *r, ngx_rbtree_t *tree)
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
198 {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
199 ngx_resolver_ctx_t *ctx, *next;
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
200 ngx_resolver_node_t *rn;
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
201
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
202 while (tree->root != tree->sentinel) {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
203
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
204 rn = (ngx_resolver_node_t *) ngx_rbtree_min(tree->root, tree->sentinel);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
205
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
206 ngx_queue_remove(&rn->queue);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
207
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
208 for (ctx = rn->waiting; ctx; ctx = next) {
376
edf1cb6c328e nginx 0.7.0
Igor Sysoev <http://sysoev.ru>
parents: 372
diff changeset
209 next = ctx->next;
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
210
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
211 if (ctx->event) {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
212 ngx_resolver_free(r, ctx->event);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
213 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
214
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
215 ngx_resolver_free(r, ctx);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
216 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
217
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
218 ngx_rbtree_delete(tree, &rn->node);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
219
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
220 ngx_resolver_free_node(r, rn);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
221 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
222 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
223
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
224
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
225 ngx_resolver_ctx_t *
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
226 ngx_resolve_start(ngx_resolver_t *r, ngx_resolver_ctx_t *temp)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
227 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
228 in_addr_t addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
229 ngx_resolver_ctx_t *ctx;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
230
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
231 if (temp) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
232 addr = ngx_inet_addr(temp->name.data, temp->name.len);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
233
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
234 if (addr != INADDR_NONE) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
235 temp->resolver = r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
236 temp->state = NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
237 temp->naddrs = 1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
238 temp->addrs = &temp->addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
239 temp->addr = addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
240 temp->quick = 1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
241
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
242 return temp;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
243 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
244 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
245
354
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
246 if (r->udp_connection == NULL) {
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
247 return NGX_NO_RESOLVER;
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
248 }
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
249
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
250 ctx = ngx_resolver_calloc(r, sizeof(ngx_resolver_ctx_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
251
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
252 if (ctx) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
253 ctx->resolver = r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
254 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
255
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
256 return ctx;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
257 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
258
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
259
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
260 ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
261 ngx_resolve_name(ngx_resolver_ctx_t *ctx)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
262 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
263 ngx_int_t rc;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
264 ngx_resolver_t *r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
265
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
266 r = ctx->resolver;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
267
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
268 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
269 "resolve: \"%V\"", &ctx->name);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
270
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
271 if (ctx->quick) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
272 ctx->handler(ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
273 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
274 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
275
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
276 /* lock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
277
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
278 rc = ngx_resolve_name_locked(r, ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
279
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
280 if (rc == NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
281 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
282 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
283
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
284 /* unlock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
285
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
286 if (rc == NGX_AGAIN) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
287 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
288 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
289
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
290 /* NGX_ERROR */
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
291
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
292 if (ctx->event) {
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
293 ngx_resolver_free(r, ctx->event);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
294 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
295
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
296 ngx_resolver_free(r, ctx);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
297
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
298 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
299 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
300
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
301
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
302 void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
303 ngx_resolve_name_done(ngx_resolver_ctx_t *ctx)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
304 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
305 uint32_t hash;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
306 ngx_resolver_t *r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
307 ngx_resolver_ctx_t *w, **p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
308 ngx_resolver_node_t *rn;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
309
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
310 r = ctx->resolver;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
311
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
312 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
313 "resolve name done: %i", ctx->state);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
314
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
315 if (ctx->quick) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
316 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
317 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
318
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
319 if (ctx->event && ctx->event->timer_set) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
320 ngx_del_timer(ctx->event);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
321 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
322
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
323 /* lock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
324
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
325 if (ctx->state == NGX_AGAIN || ctx->state == NGX_RESOLVE_TIMEDOUT) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
326
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
327 hash = ngx_crc32_short(ctx->name.data, ctx->name.len);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
328
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
329 rn = ngx_resolver_lookup_name(r, &ctx->name, hash);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
330
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
331 if (rn) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
332 p = &rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
333 w = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
334
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
335 while (w) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
336 if (w == ctx) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
337 *p = w->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
338
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
339 goto done;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
340 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
341
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
342 p = &w->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
343 w = w->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
344 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
345 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
346
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
347 ngx_log_error(NGX_LOG_ALERT, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
348 "could not cancel %V resolving", &ctx->name);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
349 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
351 done:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
352
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
353 ngx_resolver_expire(r, &r->name_rbtree, &r->name_expire_queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
354
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
355 /* unlock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
356
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
357 /* lock alloc mutex */
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
358
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
359 if (ctx->event) {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
360 ngx_resolver_free_locked(r, ctx->event);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
361 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
362
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
363 ngx_resolver_free_locked(r, ctx);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
364
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
365 /* unlock alloc mutex */
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
366 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
367
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
368
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
369 /* NGX_RESOLVE_A only */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
370
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
371 static ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
372 ngx_resolve_name_locked(ngx_resolver_t *r, ngx_resolver_ctx_t *ctx)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
373 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
374 uint32_t hash;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
375 in_addr_t addr, *addrs;
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
376 ngx_int_t rc;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
377 ngx_uint_t naddrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
378 ngx_resolver_ctx_t *next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
379 ngx_resolver_node_t *rn;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
380
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
381 hash = ngx_crc32_short(ctx->name.data, ctx->name.len);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
382
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
383 rn = ngx_resolver_lookup_name(r, &ctx->name, hash);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
384
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
385 if (rn) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
386
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
387 if (rn->valid >= ngx_time()) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
388
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
389 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, "resolve cached");
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
390
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
391 ngx_queue_remove(&rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
392
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
393 rn->expire = ngx_time() + r->expire;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
394
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
395 ngx_queue_insert_head(&r->name_expire_queue, &rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
396
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
397 naddrs = rn->naddrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
398
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
399 if (naddrs) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
400
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
401 /* NGX_RESOLVE_A answer */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
402
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
403 if (naddrs != 1) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
404 addr = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
405 addrs = ngx_resolver_dup(r, rn->u.addrs,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
406 naddrs * sizeof(in_addr_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
407 if (addrs == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
408 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
409 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
410
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
411 } else {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
412 addr = rn->u.addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
413 addrs = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
414 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
415
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
416 ctx->next = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
417 rn->waiting = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
418
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
419 /* unlock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
420
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
421 do {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
422 ctx->state = NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
423 ctx->naddrs = naddrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
424 ctx->addrs = (naddrs == 1) ? &ctx->addr : addrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
425 ctx->addr = addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
426 next = ctx->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
427
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
428 ctx->handler(ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
429
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
430 ctx = next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
431 } while (ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
432
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
433 if (addrs) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
434 ngx_resolver_free(r, addrs);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
435 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
436
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
437 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
438 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
439
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
440 /* NGX_RESOLVE_CNAME */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
441
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
442 if (ctx->recursion++ < NGX_RESOLVER_MAX_RECURSION) {
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
443
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
444 ctx->name.len = rn->cnlen;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
445 ctx->name.data = rn->u.cname;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
446
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
447 return ngx_resolve_name_locked(r, ctx);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
448 }
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
449
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
450 ctx->next = rn->waiting;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
451 rn->waiting = NULL;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
452
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
453 /* unlock name mutex */
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
454
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
455 do {
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
456 ctx->state = NGX_RESOLVE_NXDOMAIN;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
457 next = ctx->next;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
458
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
459 ctx->handler(ctx);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
460
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
461 ctx = next;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
462 } while (ctx);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
463
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
464 return NGX_OK;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
465 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
466
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
467 if (rn->waiting) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
468
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
469 ctx->next = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
470 rn->waiting = ctx;
542
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
471 ctx->state = NGX_AGAIN;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
472
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
473 return NGX_AGAIN;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
474 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
475
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
476 ngx_queue_remove(&rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
477
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
478 /* lock alloc mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
479
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
480 ngx_resolver_free_locked(r, rn->query);
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
481 rn->query = NULL;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
482
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
483 if (rn->cnlen) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
484 ngx_resolver_free_locked(r, rn->u.cname);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
485 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
486
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
487 if (rn->naddrs > 1) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
488 ngx_resolver_free_locked(r, rn->u.addrs);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
489 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
490
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
491 /* unlock alloc mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
492
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
493 } else {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
494
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
495 rn = ngx_resolver_alloc(r, sizeof(ngx_resolver_node_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
496 if (rn == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
497 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
498 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
499
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
500 rn->name = ngx_resolver_dup(r, ctx->name.data, ctx->name.len);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
501 if (rn->name == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
502 ngx_resolver_free(r, rn);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
503 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
504 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
505
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
506 rn->node.key = hash;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
507 rn->nlen = (u_short) ctx->name.len;
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
508 rn->query = NULL;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
509
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
510 ngx_rbtree_insert(&r->name_rbtree, &rn->node);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
511 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
512
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
513 rc = ngx_resolver_create_name_query(rn, ctx);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
514
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
515 if (rc == NGX_ERROR) {
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
516 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
517 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
518
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
519 if (rc == NGX_DECLINED) {
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
520 ngx_rbtree_delete(&r->name_rbtree, &rn->node);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
521
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
522 ngx_resolver_free(r, rn->query);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
523 ngx_resolver_free(r, rn->name);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
524 ngx_resolver_free(r, rn);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
525
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
526 ctx->state = NGX_RESOLVE_NXDOMAIN;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
527 ctx->handler(ctx);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
528
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
529 return NGX_OK;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
530 }
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
531
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
532 if (ngx_resolver_send_query(r, rn) != NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
533 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
534 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
535
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
536 if (ctx->event == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
537 ctx->event = ngx_resolver_calloc(r, sizeof(ngx_event_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
538 if (ctx->event == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
539 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
540 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
541
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
542 ctx->event->handler = ngx_resolver_timeout_handler;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
543 ctx->event->data = ctx;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
544 ctx->event->log = r->log;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
545 ctx->ident = -1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
546
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
547 ngx_add_timer(ctx->event, ctx->timeout);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
548 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
549
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
550 if (ngx_queue_empty(&r->name_resend_queue)) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
551 ngx_add_timer(r->event, (ngx_msec_t) (r->resend_timeout * 1000));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
552 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
553
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
554 rn->expire = ngx_time() + r->resend_timeout;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
555
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
556 ngx_queue_insert_head(&r->name_resend_queue, &rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
557
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
558 rn->cnlen = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
559 rn->naddrs = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
560 rn->valid = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
561 rn->waiting = ctx;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
562
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
563 ctx->state = NGX_AGAIN;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
564
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
565 return NGX_AGAIN;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
566
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
567 failed:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
568
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
569 ngx_rbtree_delete(&r->name_rbtree, &rn->node);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
570
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
571 if (rn->query) {
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
572 ngx_resolver_free(r, rn->query);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
573 }
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
574
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
575 ngx_resolver_free(r, rn->name);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
576
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
577 ngx_resolver_free(r, rn);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
578
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
579 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
580 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
581
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
582
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
583 ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
584 ngx_resolve_addr(ngx_resolver_ctx_t *ctx)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
585 {
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
586 u_char *name;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
587 ngx_resolver_t *r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
588 ngx_resolver_node_t *rn;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
589
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
590 r = ctx->resolver;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
591
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
592 ctx->addr = ntohl(ctx->addr);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
593
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
594 /* lock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
595
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
596 rn = ngx_resolver_lookup_addr(r, ctx->addr);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
597
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
598 if (rn) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
599
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
600 if (rn->valid >= ngx_time()) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
601
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
602 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, "resolve cached");
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
603
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
604 ngx_queue_remove(&rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
605
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
606 rn->expire = ngx_time() + r->expire;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
607
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
608 ngx_queue_insert_head(&r->addr_expire_queue, &rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
609
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
610 name = ngx_resolver_dup(r, rn->name, rn->nlen);
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
611 if (name == NULL) {
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
612 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
613 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
614
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
615 ctx->name.len = rn->nlen;
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
616 ctx->name.data = name;
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
617
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
618 /* unlock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
619
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
620 ctx->state = NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
621
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
622 ctx->handler(ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
623
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
624 ngx_resolver_free(r, name);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
625
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
626 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
627 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
628
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
629 if (rn->waiting) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
630
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
631 ctx->next = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
632 rn->waiting = ctx;
542
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
633 ctx->state = NGX_AGAIN;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
634
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
635 /* unlock addr mutex */
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
636
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
637 return NGX_OK;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
638 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
639
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
640 ngx_queue_remove(&rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
641
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
642 ngx_resolver_free(r, rn->query);
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
643 rn->query = NULL;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
644
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
645 } else {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
646 rn = ngx_resolver_alloc(r, sizeof(ngx_resolver_node_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
647 if (rn == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
648 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
649 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
650
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
651 rn->node.key = ctx->addr;
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
652 rn->query = NULL;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
653
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
654 ngx_rbtree_insert(&r->addr_rbtree, &rn->node);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
655 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
656
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
657 if (ngx_resolver_create_addr_query(rn, ctx) != NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
658 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
659 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
660
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
661 if (ngx_resolver_send_query(r, rn) != NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
662 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
663 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
664
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
665 ctx->event = ngx_resolver_calloc(r, sizeof(ngx_event_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
666 if (ctx->event == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
667 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
668 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
669
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
670 ctx->event->handler = ngx_resolver_timeout_handler;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
671 ctx->event->data = ctx;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
672 ctx->event->log = r->log;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
673 ctx->ident = -1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
674
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
675 ngx_add_timer(ctx->event, ctx->timeout);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
676
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
677 if (ngx_queue_empty(&r->addr_resend_queue)) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
678 ngx_add_timer(r->event, (ngx_msec_t) (r->resend_timeout * 1000));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
679 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
680
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
681 rn->expire = ngx_time() + r->resend_timeout;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
682
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
683 ngx_queue_insert_head(&r->addr_resend_queue, &rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
684
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
685 rn->cnlen = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
686 rn->naddrs = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
687 rn->name = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
688 rn->nlen = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
689 rn->valid = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
690 rn->waiting = ctx;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
691
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
692 /* unlock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
693
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
694 ctx->state = NGX_AGAIN;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
695
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
696 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
697
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
698 failed:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
699
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
700 if (rn) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
701 ngx_rbtree_delete(&r->addr_rbtree, &rn->node);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
702
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
703 if (rn->query) {
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
704 ngx_resolver_free(r, rn->query);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
705 }
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
706
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
707 ngx_resolver_free(r, rn);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
708 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
709
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
710 /* unlock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
711
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
712 if (ctx->event) {
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
713 ngx_resolver_free(r, ctx->event);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
714 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
715
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
716 ngx_resolver_free(r, ctx);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
717
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
718 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
719 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
720
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
721
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
722 void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
723 ngx_resolve_addr_done(ngx_resolver_ctx_t *ctx)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
724 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
725 in_addr_t addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
726 ngx_resolver_t *r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
727 ngx_resolver_ctx_t *w, **p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
728 ngx_resolver_node_t *rn;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
729
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
730 r = ctx->resolver;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
731
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
732 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
733 "resolve addr done: %i", ctx->state);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
734
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
735 if (ctx->event && ctx->event->timer_set) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
736 ngx_del_timer(ctx->event);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
737 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
738
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
739 /* lock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
740
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
741 if (ctx->state == NGX_AGAIN || ctx->state == NGX_RESOLVE_TIMEDOUT) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
742
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
743 rn = ngx_resolver_lookup_addr(r, ctx->addr);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
744
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
745 if (rn) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
746 p = &rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
747 w = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
748
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
749 while (w) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
750 if (w == ctx) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
751 *p = w->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
752
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
753 goto done;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
754 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
755
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
756 p = &w->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
757 w = w->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
758 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
759 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
760
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
761 addr = ntohl(ctx->addr);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
762
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
763 ngx_log_error(NGX_LOG_ALERT, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
764 "could not cancel %ud.%ud.%ud.%ud resolving",
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
765 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
766 (addr >> 8) & 0xff, addr & 0xff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
767 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
768
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
769 done:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
770
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
771 ngx_resolver_expire(r, &r->addr_rbtree, &r->addr_expire_queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
772
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
773 /* unlock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
774
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
775 /* lock alloc mutex */
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
776
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
777 if (ctx->event) {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
778 ngx_resolver_free_locked(r, ctx->event);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
779 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
780
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
781 ngx_resolver_free_locked(r, ctx);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
782
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
783 /* unlock alloc mutex */
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
784 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
785
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
786
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
787 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
788 ngx_resolver_expire(ngx_resolver_t *r, ngx_rbtree_t *tree, ngx_queue_t *queue)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
789 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
790 time_t now;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
791 ngx_uint_t i;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
792 ngx_queue_t *q;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
793 ngx_resolver_node_t *rn;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
794
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
795 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver expire");
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
796
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
797 now = ngx_time();
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
798
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
799 for (i = 0; i < 2; i++) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
800 if (ngx_queue_empty(queue)) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
801 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
802 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
803
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
804 q = ngx_queue_last(queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
805
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
806 rn = ngx_queue_data(q, ngx_resolver_node_t, queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
807
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
808 if (now <= rn->expire) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
809 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
810 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
811
358
9121a0a91f47 nginx 0.6.23
Igor Sysoev <http://sysoev.ru>
parents: 356
diff changeset
812 ngx_log_debug2(NGX_LOG_DEBUG_CORE, r->log, 0,
9121a0a91f47 nginx 0.6.23
Igor Sysoev <http://sysoev.ru>
parents: 356
diff changeset
813 "resolver expire \"%*s\"", (size_t) rn->nlen, rn->name);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
814
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
815 ngx_queue_remove(q);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
816
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
817 ngx_rbtree_delete(tree, &rn->node);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
818
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
819 ngx_resolver_free_node(r, rn);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
820 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
821 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
822
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
823
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
824 static ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
825 ngx_resolver_send_query(ngx_resolver_t *r, ngx_resolver_node_t *rn)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
826 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
827 ssize_t n;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
828 ngx_udp_connection_t *uc;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
829
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
830 uc = r->udp_connection;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
831
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
832 if (uc->connection == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
833 if (ngx_udp_connect(uc) != NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
834 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
835 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
836
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
837 uc->connection->data = r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
838 uc->connection->read->handler = ngx_resolver_read_response;
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
839 uc->connection->read->resolver = 1;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
840 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
841
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
842 n = ngx_send(uc->connection, rn->query, rn->qlen);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
843
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
844 if (n == -1) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
845 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
846 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
847
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
848 if ((size_t) n != (size_t) rn->qlen) {
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
849 ngx_log_error(NGX_LOG_CRIT, &uc->log, 0, "send() incomplete");
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
850 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
851 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
852
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
853 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
854 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
855
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
856
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
857 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
858 ngx_resolver_resend_handler(ngx_event_t *ev)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
859 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
860 time_t timer, atimer, ntimer;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
861 ngx_resolver_t *r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
862
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
863 r = ev->data;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
864
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
865 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
866 "resolver resend handler");
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
867
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
868 /* lock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
869
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
870 ntimer = ngx_resolver_resend(r, &r->name_rbtree, &r->name_resend_queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
871
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
872 /* unlock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
873
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
874 /* lock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
875
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
876 atimer = ngx_resolver_resend(r, &r->addr_rbtree, &r->addr_resend_queue);
354
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
877
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
878 /* unlock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
879
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
880 if (ntimer == 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
881 timer = atimer;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
882
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
883 } else if (atimer == 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
884 timer = ntimer;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
885
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
886 } else {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
887 timer = (atimer < ntimer) ? atimer : ntimer;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
888 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
889
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
890 if (timer) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
891 ngx_add_timer(r->event, (ngx_msec_t) (timer * 1000));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
892 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
893 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
894
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
895
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
896 static time_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
897 ngx_resolver_resend(ngx_resolver_t *r, ngx_rbtree_t *tree, ngx_queue_t *queue)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
898 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
899 time_t now;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
900 ngx_queue_t *q;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
901 ngx_resolver_node_t *rn;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
902
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
903 now = ngx_time();
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
904
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
905 for ( ;; ) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
906 if (ngx_queue_empty(queue)) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
907 return 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
908 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
909
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
910 q = ngx_queue_last(queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
911
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
912 rn = ngx_queue_data(q, ngx_resolver_node_t, queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
913
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
914 if (now < rn->expire) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
915 return rn->expire - now;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
916 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
917
358
9121a0a91f47 nginx 0.6.23
Igor Sysoev <http://sysoev.ru>
parents: 356
diff changeset
918 ngx_log_debug3(NGX_LOG_DEBUG_CORE, r->log, 0,
9121a0a91f47 nginx 0.6.23
Igor Sysoev <http://sysoev.ru>
parents: 356
diff changeset
919 "resolver resend \"%*s\" %p",
9121a0a91f47 nginx 0.6.23
Igor Sysoev <http://sysoev.ru>
parents: 356
diff changeset
920 (size_t) rn->nlen, rn->name, rn->waiting);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
921
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
922 ngx_queue_remove(q);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
923
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
924 if (rn->waiting) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
925
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
926 if (ngx_resolver_send_query(r, rn) == NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
927
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
928 rn->expire = now + r->resend_timeout;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
929
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
930 ngx_queue_insert_head(queue, &rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
931 }
364
a39aab45a53f nginx 0.6.26
Igor Sysoev <http://sysoev.ru>
parents: 358
diff changeset
932
a39aab45a53f nginx 0.6.26
Igor Sysoev <http://sysoev.ru>
parents: 358
diff changeset
933 continue;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
934 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
935
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
936 ngx_rbtree_delete(tree, &rn->node);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
937
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
938 ngx_resolver_free_node(r, rn);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
939 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
940 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
941
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
942
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
943 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
944 ngx_resolver_read_response(ngx_event_t *rev)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
945 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
946 ssize_t n;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
947 ngx_connection_t *c;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
948 u_char buf[NGX_RESOLVER_UDP_SIZE];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
949
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
950 c = rev->data;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
951
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
952 do {
354
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
953 n = ngx_udp_recv(c, buf, NGX_RESOLVER_UDP_SIZE);
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
954
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
955 if (n < 0) {
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
956 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
957 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
958
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
959 ngx_resolver_process_response(c->data, buf, n);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
960
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
961 } while (rev->ready);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
962 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
963
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
964
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
965 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
966 ngx_resolver_process_response(ngx_resolver_t *r, u_char *buf, size_t n)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
967 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
968 char *err;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
969 size_t len;
416
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
970 ngx_uint_t i, times, ident, qident, flags, code, nqs, nan,
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
971 qtype, qclass;
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
972 ngx_queue_t *q;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
973 ngx_resolver_qs_t *qs;
416
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
974 ngx_resolver_node_t *rn;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
975 ngx_resolver_query_t *query;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
976
416
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
977 if ((size_t) n < sizeof(ngx_resolver_query_t)) {
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
978 goto short_response;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
979 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
980
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
981 query = (ngx_resolver_query_t *) buf;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
982
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
983 ident = (query->ident_hi << 8) + query->ident_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
984 flags = (query->flags_hi << 8) + query->flags_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
985 nqs = (query->nqs_hi << 8) + query->nqs_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
986 nan = (query->nan_hi << 8) + query->nan_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
987
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
988 ngx_log_debug6(NGX_LOG_DEBUG_CORE, r->log, 0,
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
989 "resolver DNS response %ui fl:%04Xui %ui/%ui/%ui/%ui",
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
990 ident, flags, nqs, nan,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
991 (query->nns_hi << 8) + query->nns_lo,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
992 (query->nar_hi << 8) + query->nar_lo);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
993
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
994 if (!(flags & 0x8000)) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
995 ngx_log_error(r->log_level, r->log, 0,
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
996 "invalid DNS response %ui fl:%04Xui", ident, flags);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
997 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
998 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
999
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1000 code = flags & 0x7f;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1001
416
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1002 if (code == NGX_RESOLVE_FORMERR) {
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1003
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1004 times = 0;
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1005
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1006 for (q = ngx_queue_head(&r->name_resend_queue);
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1007 q != ngx_queue_sentinel(&r->name_resend_queue) || times++ < 100;
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1008 q = ngx_queue_next(q))
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1009 {
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1010 rn = ngx_queue_data(q, ngx_resolver_node_t, queue);
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1011 qident = (rn->query[0] << 8) + rn->query[1];
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1012
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1013 if (qident == ident) {
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1014 ngx_log_error(r->log_level, r->log, 0,
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1015 "DNS error (%ui: %s), query id:%ui, name:\"%*s\"",
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1016 code, ngx_resolver_strerror(code), ident,
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1017 rn->nlen, rn->name);
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1018 return;
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1019 }
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1020 }
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1021
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1022 goto dns_error;
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1023 }
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1024
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1025 if (code > NGX_RESOLVE_REFUSED) {
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1026 goto dns_error;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1027 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1028
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1029 if (nqs != 1) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1030 err = "invalid number of questions in DNS response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1031 goto done;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1032 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1033
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1034 i = sizeof(ngx_resolver_query_t);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1035
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1036 while (i < (ngx_uint_t) n) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1037 if (buf[i] == '\0') {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1038 goto found;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1039 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1040
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1041 len = buf[i];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1042 i += 1 + len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1043 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1044
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1045 goto short_response;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1046
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1047 found:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1048
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1049 if (i++ == 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1050 err = "zero-length domain name in DNS response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1051 goto done;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1052 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1053
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1054 if (i + sizeof(ngx_resolver_qs_t) + nan * (2 + sizeof(ngx_resolver_an_t))
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1055 > (ngx_uint_t) n)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1056 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1057 goto short_response;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1058 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1059
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1060 qs = (ngx_resolver_qs_t *) &buf[i];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1061
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1062 qtype = (qs->type_hi << 8) + qs->type_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1063 qclass = (qs->class_hi << 8) + qs->class_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1064
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1065 ngx_log_debug2(NGX_LOG_DEBUG_CORE, r->log, 0,
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1066 "resolver DNS response qt:%ui cl:%ui", qtype, qclass);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1067
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1068 if (qclass != 1) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1069 ngx_log_error(r->log_level, r->log, 0,
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1070 "unknown query class %ui in DNS response", qclass);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1071 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1072 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1073
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1074 switch (qtype) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1075
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1076 case NGX_RESOLVE_A:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1077
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1078 ngx_resolver_process_a(r, buf, n, ident, code, nan,
356
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1079 i + sizeof(ngx_resolver_qs_t));
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1080
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1081 break;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1082
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1083 case NGX_RESOLVE_PTR:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1084
356
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1085 ngx_resolver_process_ptr(r, buf, n, ident, code, nan);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1086
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1087 break;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1088
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1089 default:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1090 ngx_log_error(r->log_level, r->log, 0,
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1091 "unknown query type %ui in DNS response", qtype);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1092 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1093 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1094
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1095 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1096
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1097 short_response:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1098
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1099 err = "short dns response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1100
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1101 done:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1102
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1103 ngx_log_error(r->log_level, r->log, 0, err);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1104
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1105 return;
416
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1106
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1107 dns_error:
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1108
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1109 ngx_log_error(r->log_level, r->log, 0,
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1110 "DNS error (%ui: %s), query id:%ui",
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1111 code, ngx_resolver_strerror(code), ident);
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1112 return;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1113 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1114
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1115
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1116 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1117 ngx_resolver_process_a(ngx_resolver_t *r, u_char *buf, size_t last,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1118 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan, ngx_uint_t ans)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1119 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1120 char *err;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1121 u_char *cname;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1122 size_t len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1123 uint32_t hash;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1124 in_addr_t addr, *addrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1125 ngx_str_t name;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1126 ngx_uint_t qtype, qident, naddrs, a, i, n, start;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1127 ngx_resolver_an_t *an;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1128 ngx_resolver_ctx_t *ctx, *next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1129 ngx_resolver_node_t *rn;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1130
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1131 if (ngx_resolver_copy(r, &name, buf, &buf[12], &buf[last]) != NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1132 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1133 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1134
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1135 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver qs:%V", &name);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1136
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1137 hash = ngx_crc32_short(name.data, name.len);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1138
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1139 /* lock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1140
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1141 rn = ngx_resolver_lookup_name(r, &name, hash);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1142
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1143 if (rn == NULL || rn->query == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1144 ngx_log_error(r->log_level, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1145 "unexpected response for %V", &name);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1146 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1147 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1148
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1149 qident = (rn->query[0] << 8) + rn->query[1];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1150
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1151 if (ident != qident) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1152 ngx_log_error(r->log_level, r->log, 0,
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1153 "wrong ident %ui response for %V, expect %ui",
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1154 ident, &name, qident);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1155 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1156 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1157
528
005a70f9573b nginx 0.8.16
Igor Sysoev <http://sysoev.ru>
parents: 484
diff changeset
1158 ngx_resolver_free(r, name.data);
005a70f9573b nginx 0.8.16
Igor Sysoev <http://sysoev.ru>
parents: 484
diff changeset
1159
356
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1160 if (code == 0 && nan == 0) {
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1161 code = 3; /* NXDOMAIN */
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1162 }
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1163
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1164 if (code) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1165 next = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1166 rn->waiting = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1167
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1168 ngx_queue_remove(&rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1169
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1170 ngx_rbtree_delete(&r->name_rbtree, &rn->node);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1171
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1172 ngx_resolver_free_node(r, rn);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1173
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1174 /* unlock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1175
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1176 while (next) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1177 ctx = next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1178 ctx->state = code;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1179 next = ctx->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1180
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1181 ctx->handler(ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1182 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1183
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1184 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1185 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1186
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1187 i = ans;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1188 naddrs = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1189 addr = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1190 addrs = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1191 cname = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1192 qtype = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1193
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1194 for (a = 0; a < nan; a++) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1195
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1196 start = i;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1197
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1198 while (i < last) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1199
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1200 if (buf[i] & 0xc0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1201 i += 2;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1202 goto found;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1203 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1204
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1205 if (buf[i] == 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1206 i++;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1207 goto test_length;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1208 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1209
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1210 i += 1 + buf[i];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1211 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1212
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1213 goto short_response;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1214
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1215 test_length:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1216
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1217 if (i - start < 2) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1218 err = "invalid name in dns response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1219 goto invalid;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1220 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1221
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1222 found:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1223
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1224 if (i + sizeof(ngx_resolver_an_t) >= last) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1225 goto short_response;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1226 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1227
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1228 an = (ngx_resolver_an_t *) &buf[i];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1229
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1230 qtype = (an->type_hi << 8) + an->type_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1231 len = (an->len_hi << 8) + an->len_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1232
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1233 if (qtype == NGX_RESOLVE_A) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1234
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1235 i += sizeof(ngx_resolver_an_t);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1236
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1237 if (i + len > last) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1238 goto short_response;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1239 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1240
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1241 addr = htonl((buf[i] << 24) + (buf[i + 1] << 16)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1242 + (buf[i + 2] << 8) + (buf[i + 3]));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1243
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1244 naddrs++;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1245
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1246 i += len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1247
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1248 } else if (qtype == NGX_RESOLVE_CNAME) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1249 cname = &buf[i] + sizeof(ngx_resolver_an_t);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1250 i += sizeof(ngx_resolver_an_t) + len;
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1251
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1252 } else if (qtype == NGX_RESOLVE_DNAME) {
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1253 i += sizeof(ngx_resolver_an_t) + len;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1254
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1255 } else {
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1256 ngx_log_error(r->log_level, r->log, 0,
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1257 "unexpected qtype %ui", qtype);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1258 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1259 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1260
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1261 ngx_log_debug2(NGX_LOG_DEBUG_CORE, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1262 "resolver naddrs:%ui cname:%p", naddrs, cname);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1263
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1264 if (naddrs) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1265
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1266 if (naddrs == 1) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1267 rn->u.addr = addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1268
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1269 } else {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1270
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1271 addrs = ngx_resolver_alloc(r, naddrs * sizeof(in_addr_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1272 if (addrs == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1273 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1274 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1275
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1276 n = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1277 i = ans;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1278
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1279 for (a = 0; a < nan; a++) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1280
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1281 for ( ;; ) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1282
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1283 if (buf[i] & 0xc0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1284 i += 2;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1285 goto ok;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1286 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1287
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1288 if (buf[i] == 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1289 i++;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1290 goto ok;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1291 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1292
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1293 i += 1 + buf[i];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1294 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1295
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1296 ok:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1297
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1298 an = (ngx_resolver_an_t *) &buf[i];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1299
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1300 qtype = (an->type_hi << 8) + an->type_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1301 len = (an->len_hi << 8) + an->len_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1302
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1303 i += sizeof(ngx_resolver_an_t);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1304
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1305 if (qtype == NGX_RESOLVE_A) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1306
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1307 addrs[n++] = htonl((buf[i] << 24) + (buf[i + 1] << 16)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1308 + (buf[i + 2] << 8) + (buf[i + 3]));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1309
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1310 if (n == naddrs) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1311 break;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1312 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1313 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1314
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1315 i += len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1316 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1317
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1318 rn->u.addrs = addrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1319
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1320 addrs = ngx_resolver_dup(r, rn->u.addrs,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1321 naddrs * sizeof(in_addr_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1322 if (addrs == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1323 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1324 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1325 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1326
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1327 rn->naddrs = (u_short) naddrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1328
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1329 ngx_queue_remove(&rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1330
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1331 rn->valid = ngx_time() + r->valid;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1332 rn->expire = ngx_time() + r->expire;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1333
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1334 ngx_queue_insert_head(&r->name_expire_queue, &rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1335
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1336 next = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1337 rn->waiting = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1338
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1339 /* unlock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1340
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1341 while (next) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1342 ctx = next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1343 ctx->state = NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1344 ctx->naddrs = naddrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1345 ctx->addrs = (naddrs == 1) ? &ctx->addr : addrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1346 ctx->addr = addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1347 next = ctx->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1348
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1349 ctx->handler(ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1350 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1351
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1352 if (naddrs > 1) {
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1353 ngx_resolver_free(r, addrs);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1354 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1355
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1356 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1357
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1358 } else if (cname) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1359
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1360 /* CNAME only */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1361
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1362 if (ngx_resolver_copy(r, &name, buf, cname, &buf[last]) != NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1363 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1364 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1365
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1366 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1367 "resolver cname:\"%V\"", &name);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1368
356
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1369 ngx_queue_remove(&rn->queue);
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1370
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1371 rn->cnlen = (u_short) name.len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1372 rn->u.cname = name.data;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1373 rn->valid = ngx_time() + r->valid;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1374 rn->expire = ngx_time() + r->expire;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1375
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1376 ngx_queue_insert_head(&r->name_expire_queue, &rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1377
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1378 ctx = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1379 rn->waiting = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1380
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1381 if (ctx) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1382 ctx->name = name;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1383
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1384 (void) ngx_resolve_name_locked(r, ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1385 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1386
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1387 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1388 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1389
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1390 ngx_log_error(r->log_level, r->log, 0,
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1391 "no A or CNAME types in DNS responses, unknown query type: %ui",
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1392 qtype);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1393 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1394
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1395 short_response:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1396
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1397 err = "short dns response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1398
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1399 invalid:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1400
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1401 /* unlock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1402
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1403 ngx_log_error(r->log_level, r->log, 0, err);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1404
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1405 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1406
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1407 failed:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1408
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1409 /* unlock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1410
528
005a70f9573b nginx 0.8.16
Igor Sysoev <http://sysoev.ru>
parents: 484
diff changeset
1411 ngx_resolver_free(r, name.data);
005a70f9573b nginx 0.8.16
Igor Sysoev <http://sysoev.ru>
parents: 484
diff changeset
1412
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1413 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1414 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1415
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1416
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1417 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1418 ngx_resolver_process_ptr(ngx_resolver_t *r, u_char *buf, size_t n,
356
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1419 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan)
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1420 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1421 char *err;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1422 size_t len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1423 in_addr_t addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1424 ngx_int_t digit;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1425 ngx_str_t name;
622
8dc007eddbcf nginx 1.0.1
Igor Sysoev <http://sysoev.ru>
parents: 598
diff changeset
1426 ngx_uint_t i, mask, qident;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1427 ngx_resolver_an_t *an;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1428 ngx_resolver_ctx_t *ctx, *next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1429 ngx_resolver_node_t *rn;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1430
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1431 if (ngx_resolver_copy(r, NULL, buf, &buf[12], &buf[n]) != NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1432 goto invalid_in_addr_arpa;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1433 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1434
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1435 addr = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1436 i = 12;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1437
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1438 for (mask = 0; mask < 32; mask += 8) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1439 len = buf[i++];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1440
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1441 digit = ngx_atoi(&buf[i], len);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1442 if (digit == NGX_ERROR || digit > 255) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1443 goto invalid_in_addr_arpa;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1444 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1445
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1446 addr += digit << mask;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1447 i += len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1448 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1449
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1450 if (ngx_strcmp(&buf[i], "\7in-addr\4arpa") != 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1451 goto invalid_in_addr_arpa;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1452 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1453
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1454 /* lock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1455
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1456 rn = ngx_resolver_lookup_addr(r, addr);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1457
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1458 if (rn == NULL || rn->query == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1459 ngx_log_error(r->log_level, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1460 "unexpected response for %ud.%ud.%ud.%ud",
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1461 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1462 (addr >> 8) & 0xff, addr & 0xff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1463 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1464 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1465
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1466 qident = (rn->query[0] << 8) + rn->query[1];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1467
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1468 if (ident != qident) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1469 ngx_log_error(r->log_level, r->log, 0,
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1470 "wrong ident %ui response for %ud.%ud.%ud.%ud, expect %ui",
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1471 ident, (addr >> 24) & 0xff, (addr >> 16) & 0xff,
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1472 (addr >> 8) & 0xff, addr & 0xff, qident);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1473 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1474 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1475
356
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1476 if (code == 0 && nan == 0) {
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1477 code = 3; /* NXDOMAIN */
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1478 }
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1479
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1480 if (code) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1481 next = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1482 rn->waiting = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1483
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1484 ngx_queue_remove(&rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1485
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1486 ngx_rbtree_delete(&r->addr_rbtree, &rn->node);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1487
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1488 ngx_resolver_free_node(r, rn);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1489
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1490 /* unlock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1491
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1492 while (next) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1493 ctx = next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1494 ctx->state = code;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1495 next = ctx->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1496
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1497 ctx->handler(ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1498 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1499
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1500 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1501 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1502
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1503 i += sizeof("\7in-addr\4arpa") + sizeof(ngx_resolver_qs_t);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1504
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1505 if (i + 2 + sizeof(ngx_resolver_an_t) > (ngx_uint_t) n) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1506 goto short_response;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1507 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1508
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1509 /* compression pointer to "XX.XX.XX.XX.in-addr.arpa */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1510
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1511 if (buf[i] != 0xc0 || buf[i + 1] != 0x0c) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1512 err = "invalid in-addr.arpa name in DNS response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1513 goto invalid;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1514 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1515
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1516 an = (ngx_resolver_an_t *) &buf[i + 2];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1517
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1518 len = (an->len_hi << 8) + an->len_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1519
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1520 ngx_log_debug3(NGX_LOG_DEBUG_CORE, r->log, 0,
622
8dc007eddbcf nginx 1.0.1
Igor Sysoev <http://sysoev.ru>
parents: 598
diff changeset
1521 "resolver qt:%ui cl:%ui len:%uz",
8dc007eddbcf nginx 1.0.1
Igor Sysoev <http://sysoev.ru>
parents: 598
diff changeset
1522 (an->type_hi << 8) + an->type_lo,
8dc007eddbcf nginx 1.0.1
Igor Sysoev <http://sysoev.ru>
parents: 598
diff changeset
1523 (an->class_hi << 8) + an->class_lo, len);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1524
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1525 i += 2 + sizeof(ngx_resolver_an_t);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1526
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1527 if (i + len > (ngx_uint_t) n) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1528 goto short_response;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1529 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1530
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1531 if (ngx_resolver_copy(r, &name, buf, &buf[i], &buf[n]) != NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1532 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1533 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1534
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1535 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver an:%V", &name);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1536
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1537 if (name.len != (size_t) rn->nlen
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1538 || ngx_strncmp(name.data, rn->name, name.len) != 0)
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1539 {
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1540 if (rn->nlen) {
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1541 ngx_resolver_free(r, rn->name);
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1542 }
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1543
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1544 rn->nlen = (u_short) name.len;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1545 rn->name = name.data;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1546
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1547 name.data = ngx_resolver_dup(r, rn->name, name.len);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1548 if (name.data == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1549 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1550 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1551 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1552
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1553 ngx_queue_remove(&rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1554
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1555 rn->valid = ngx_time() + r->valid;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1556 rn->expire = ngx_time() + r->expire;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1557
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1558 ngx_queue_insert_head(&r->addr_expire_queue, &rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1559
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1560 next = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1561 rn->waiting = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1562
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1563 /* unlock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1564
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1565 while (next) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1566 ctx = next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1567 ctx->state = NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1568 ctx->name = name;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1569 next = ctx->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1570
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1571 ctx->handler(ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1572 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1573
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1574 ngx_resolver_free(r, name.data);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1575
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1576 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1577
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1578 invalid_in_addr_arpa:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1579
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1580 ngx_log_error(r->log_level, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1581 "invalid in-addr.arpa name in DNS response");
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1582 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1583
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1584 short_response:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1585
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1586 err = "short DNS response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1587
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1588 invalid:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1589
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1590 /* unlock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1591
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1592 ngx_log_error(r->log_level, r->log, 0, err);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1593
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1594 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1595
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1596 failed:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1597
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1598 /* unlock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1599
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1600 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1601 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1602
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1603
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1604 static ngx_resolver_node_t *
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1605 ngx_resolver_lookup_name(ngx_resolver_t *r, ngx_str_t *name, uint32_t hash)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1606 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1607 ngx_int_t rc;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1608 ngx_rbtree_node_t *node, *sentinel;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1609 ngx_resolver_node_t *rn;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1610
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1611 node = r->name_rbtree.root;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1612 sentinel = r->name_rbtree.sentinel;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1613
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1614 while (node != sentinel) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1615
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1616 if (hash < node->key) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1617 node = node->left;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1618 continue;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1619 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1620
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1621 if (hash > node->key) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1622 node = node->right;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1623 continue;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1624 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1625
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1626 /* hash == node->key */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1627
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1628 do {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1629 rn = (ngx_resolver_node_t *) node;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1630
528
005a70f9573b nginx 0.8.16
Igor Sysoev <http://sysoev.ru>
parents: 484
diff changeset
1631 rc = ngx_memn2cmp(name->data, rn->name, name->len, rn->nlen);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1632
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1633 if (rc == 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1634 return rn;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1635 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1636
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1637 node = (rc < 0) ? node->left : node->right;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1638
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1639 } while (node != sentinel && hash == node->key);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1640
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1641 break;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1642 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1643
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1644 /* not found */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1645
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1646 return NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1647 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1648
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1649
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1650 static ngx_resolver_node_t *
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1651 ngx_resolver_lookup_addr(ngx_resolver_t *r, in_addr_t addr)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1652 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1653 ngx_rbtree_node_t *node, *sentinel;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1654
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1655 node = r->addr_rbtree.root;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1656 sentinel = r->addr_rbtree.sentinel;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1657
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1658 while (node != sentinel) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1659
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1660 if (addr < node->key) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1661 node = node->left;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1662 continue;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1663 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1664
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1665 if (addr > node->key) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1666 node = node->right;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1667 continue;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1668 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1669
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1670 /* addr == node->key */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1671
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1672 return (ngx_resolver_node_t *) node;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1673 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1674
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1675 /* not found */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1676
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1677 return NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1678 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1679
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1680
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1681 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1682 ngx_resolver_rbtree_insert_value(ngx_rbtree_node_t *temp,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1683 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1684 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1685 ngx_rbtree_node_t **p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1686 ngx_resolver_node_t *rn, *rn_temp;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1687
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1688 for ( ;; ) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1689
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1690 if (node->key < temp->key) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1691
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1692 p = &temp->left;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1693
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1694 } else if (node->key > temp->key) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1695
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1696 p = &temp->right;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1697
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1698 } else { /* node->key == temp->key */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1699
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1700 rn = (ngx_resolver_node_t *) node;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1701 rn_temp = (ngx_resolver_node_t *) temp;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1702
528
005a70f9573b nginx 0.8.16
Igor Sysoev <http://sysoev.ru>
parents: 484
diff changeset
1703 p = (ngx_memn2cmp(rn->name, rn_temp->name, rn->nlen, rn_temp->nlen)
005a70f9573b nginx 0.8.16
Igor Sysoev <http://sysoev.ru>
parents: 484
diff changeset
1704 < 0) ? &temp->left : &temp->right;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1705 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1706
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1707 if (*p == sentinel) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1708 break;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1709 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1710
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1711 temp = *p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1712 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1713
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1714 *p = node;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1715 node->parent = temp;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1716 node->left = sentinel;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1717 node->right = sentinel;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1718 ngx_rbt_red(node);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1719 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1720
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1721
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1722 static ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1723 ngx_resolver_create_name_query(ngx_resolver_node_t *rn, ngx_resolver_ctx_t *ctx)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1724 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1725 u_char *p, *s;
544
40c366b3535c nginx 0.8.24
Igor Sysoev <http://sysoev.ru>
parents: 542
diff changeset
1726 size_t len, nlen;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1727 ngx_uint_t ident;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1728 ngx_resolver_qs_t *qs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1729 ngx_resolver_query_t *query;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1730
544
40c366b3535c nginx 0.8.24
Igor Sysoev <http://sysoev.ru>
parents: 542
diff changeset
1731 nlen = ctx->name.len ? (1 + ctx->name.len + 1) : 1;
40c366b3535c nginx 0.8.24
Igor Sysoev <http://sysoev.ru>
parents: 542
diff changeset
1732
40c366b3535c nginx 0.8.24
Igor Sysoev <http://sysoev.ru>
parents: 542
diff changeset
1733 len = sizeof(ngx_resolver_query_t) + nlen + sizeof(ngx_resolver_qs_t);
40c366b3535c nginx 0.8.24
Igor Sysoev <http://sysoev.ru>
parents: 542
diff changeset
1734
40c366b3535c nginx 0.8.24
Igor Sysoev <http://sysoev.ru>
parents: 542
diff changeset
1735 p = ngx_resolver_alloc(ctx->resolver, len);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1736 if (p == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1737 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1738 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1739
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1740 rn->qlen = (u_short) len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1741 rn->query = p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1742
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1743 query = (ngx_resolver_query_t *) p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1744
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1745 ident = ngx_random();
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1746
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1747 ngx_log_debug2(NGX_LOG_DEBUG_CORE, ctx->resolver->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1748 "resolve: \"%V\" %i", &ctx->name, ident & 0xffff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1749
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1750 query->ident_hi = (u_char) ((ident >> 8) & 0xff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1751 query->ident_lo = (u_char) (ident & 0xff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1752
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1753 /* recursion query */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1754 query->flags_hi = 1; query->flags_lo = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1755
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1756 /* one question */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1757 query->nqs_hi = 0; query->nqs_lo = 1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1758 query->nan_hi = 0; query->nan_lo = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1759 query->nns_hi = 0; query->nns_lo = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1760 query->nar_hi = 0; query->nar_lo = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1761
544
40c366b3535c nginx 0.8.24
Igor Sysoev <http://sysoev.ru>
parents: 542
diff changeset
1762 p += sizeof(ngx_resolver_query_t) + nlen;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1763
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1764 qs = (ngx_resolver_qs_t *) p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1765
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1766 /* query type */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1767 qs->type_hi = 0; qs->type_lo = (u_char) ctx->type;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1768
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1769 /* IP query class */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1770 qs->class_hi = 0; qs->class_lo = 1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1771
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1772 /* convert "www.example.com" to "\3www\7example\3com\0" */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1773
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1774 len = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1775 p--;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1776 *p-- = '\0';
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1777
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1778 for (s = ctx->name.data + ctx->name.len - 1; s >= ctx->name.data; s--) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1779 if (*s != '.') {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1780 *p = *s;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1781 len++;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1782
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1783 } else {
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1784 if (len == 0) {
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1785 return NGX_DECLINED;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1786 }
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1787
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1788 *p = (u_char) len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1789 len = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1790 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1791
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1792 p--;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1793 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1794
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1795 *p = (u_char) len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1796
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1797 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1798 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1799
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1800
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1801 /* AF_INET only */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1802
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1803 static ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1804 ngx_resolver_create_addr_query(ngx_resolver_node_t *rn, ngx_resolver_ctx_t *ctx)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1805 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1806 u_char *p, *d;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1807 size_t len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1808 ngx_int_t n;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1809 ngx_uint_t ident;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1810 ngx_resolver_query_t *query;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1811
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1812 len = sizeof(ngx_resolver_query_t)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1813 + sizeof(".255.255.255.255.in-addr.arpa.") - 1
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1814 + sizeof(ngx_resolver_qs_t);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1815
544
40c366b3535c nginx 0.8.24
Igor Sysoev <http://sysoev.ru>
parents: 542
diff changeset
1816 p = ngx_resolver_alloc(ctx->resolver, len);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1817 if (p == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1818 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1819 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1820
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1821 rn->query = p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1822 query = (ngx_resolver_query_t *) p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1823
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1824 ident = ngx_random();
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1825
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1826 query->ident_hi = (u_char) ((ident >> 8) & 0xff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1827 query->ident_lo = (u_char) (ident & 0xff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1828
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1829 /* recursion query */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1830 query->flags_hi = 1; query->flags_lo = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1831
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1832 /* one question */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1833 query->nqs_hi = 0; query->nqs_lo = 1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1834 query->nan_hi = 0; query->nan_lo = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1835 query->nns_hi = 0; query->nns_lo = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1836 query->nar_hi = 0; query->nar_lo = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1837
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1838 p += sizeof(ngx_resolver_query_t);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1839
582
c456a023113c nginx 0.8.43
Igor Sysoev <http://sysoev.ru>
parents: 560
diff changeset
1840 for (n = 0; n < 32; n += 8) {
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1841 d = ngx_sprintf(&p[1], "%ud", (ctx->addr >> n) & 0xff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1842 *p = (u_char) (d - &p[1]);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1843 p = d;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1844 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1845
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1846 /* query type "PTR", IP query class */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1847 ngx_memcpy(p, "\7in-addr\4arpa\0\0\14\0\1", 18);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1848
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1849 rn->qlen = (u_short)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1850 (p + sizeof("\7in-addr\4arpa") + sizeof(ngx_resolver_qs_t)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1851 - rn->query);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1852
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1853 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1854 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1855
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1856
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1857 static ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1858 ngx_resolver_copy(ngx_resolver_t *r, ngx_str_t *name, u_char *buf, u_char *src,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1859 u_char *last)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1860 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1861 char *err;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1862 u_char *p, *dst;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1863 ssize_t len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1864 ngx_uint_t i, n;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1865
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1866 p = src;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1867 len = -1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1868
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1869 /*
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1870 * compression pointers allow to create endless loop, so we set limit;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1871 * 128 pointers should be enough to store 255-byte name
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1872 */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1873
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1874 for (i = 0; i < 128; i++) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1875 n = *p++;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1876
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1877 if (n == 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1878 goto done;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1879 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1880
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1881 if (n & 0xc0) {
420
ad0a34a8efa6 nginx 0.7.22
Igor Sysoev <http://sysoev.ru>
parents: 416
diff changeset
1882 n = ((n & 0x3f) << 8) + *p;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1883 p = &buf[n];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1884
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1885 } else {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1886 len += 1 + n;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1887 p = &p[n];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1888 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1889
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1890 if (p >= last) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1891 err = "name is out of response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1892 goto invalid;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1893 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1894 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1895
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1896 err = "compression pointers loop";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1897
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1898 invalid:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1899
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1900 ngx_log_error(r->log_level, r->log, 0, err);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1901
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1902 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1903
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1904 done:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1905
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1906 if (name == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1907 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1908 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1909
542
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
1910 if (len == -1) {
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
1911 name->len = 0;
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
1912 name->data = NULL;
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
1913 return NGX_OK;
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
1914 }
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
1915
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1916 dst = ngx_resolver_alloc(r, len);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1917 if (dst == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1918 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1919 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1920
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1921 name->data = dst;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1922
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1923 n = *src++;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1924
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1925 for ( ;; ) {
640
97a1e05203c2 nginx 1.0.10
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
1926 if (n & 0xc0) {
97a1e05203c2 nginx 1.0.10
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
1927 n = ((n & 0x3f) << 8) + *src;
97a1e05203c2 nginx 1.0.10
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
1928 src = &buf[n];
97a1e05203c2 nginx 1.0.10
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
1929
97a1e05203c2 nginx 1.0.10
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
1930 n = *src++;
97a1e05203c2 nginx 1.0.10
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
1931
97a1e05203c2 nginx 1.0.10
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
1932 } else {
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1933 ngx_memcpy(dst, src, n);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1934 dst += n;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1935 src += n;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1936
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1937 n = *src++;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1938
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1939 if (n != 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1940 *dst++ = '.';
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1941 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1942 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1943
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1944 if (n == 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1945 name->len = dst - name->data;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1946 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1947 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1948 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1949 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1950
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1951
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1952 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1953 ngx_resolver_timeout_handler(ngx_event_t *ev)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1954 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1955 ngx_resolver_ctx_t *ctx;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1956
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1957 ctx = ev->data;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1958
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1959 ctx->state = NGX_RESOLVE_TIMEDOUT;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1960
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1961 ctx->handler(ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1962 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1963
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1964
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1965 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1966 ngx_resolver_free_node(ngx_resolver_t *r, ngx_resolver_node_t *rn)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1967 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1968 /* lock alloc mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1969
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1970 if (rn->query) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1971 ngx_resolver_free_locked(r, rn->query);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1972 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1973
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1974 if (rn->name) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1975 ngx_resolver_free_locked(r, rn->name);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1976 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1977
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1978 if (rn->cnlen) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1979 ngx_resolver_free_locked(r, rn->u.cname);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1980 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1981
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1982 if (rn->naddrs > 1) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1983 ngx_resolver_free_locked(r, rn->u.addrs);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1984 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1985
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1986 ngx_resolver_free_locked(r, rn);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1987
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1988 /* unlock alloc mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1989 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1990
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1991
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1992 static void *
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1993 ngx_resolver_alloc(ngx_resolver_t *r, size_t size)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1994 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1995 u_char *p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1996
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1997 /* lock alloc mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1998
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1999 p = ngx_alloc(size, r->log);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2000
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2001 /* unlock alloc mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2002
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2003 return p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2004 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2005
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2006
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
2007 static void *
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2008 ngx_resolver_calloc(ngx_resolver_t *r, size_t size)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2009 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2010 u_char *p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2011
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2012 p = ngx_resolver_alloc(r, size);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2013
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2014 if (p) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2015 ngx_memzero(p, size);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2016 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2017
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2018 return p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2019 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2020
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2021
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2022 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2023 ngx_resolver_free(ngx_resolver_t *r, void *p)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2024 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2025 /* lock alloc mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2026
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2027 ngx_free(p);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2028
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2029 /* unlock alloc mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2030 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2031
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2032
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2033 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2034 ngx_resolver_free_locked(ngx_resolver_t *r, void *p)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2035 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2036 ngx_free(p);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2037 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2038
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2039
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2040 static void *
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2041 ngx_resolver_dup(ngx_resolver_t *r, void *src, size_t size)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2042 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2043 void *dst;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2044
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2045 dst = ngx_resolver_alloc(r, size);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2046
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2047 if (dst == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2048 return dst;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2049 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2050
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2051 ngx_memcpy(dst, src, size);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2052
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2053 return dst;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2054 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2055
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2056
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2057 char *
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2058 ngx_resolver_strerror(ngx_int_t err)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2059 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2060 static char *errors[] = {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2061 "Format error", /* FORMERR */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2062 "Server failure", /* SERVFAIL */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2063 "Host not found", /* NXDOMAIN */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2064 "Unimplemented", /* NOTIMP */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2065 "Operation refused" /* REFUSED */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2066 };
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2067
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2068 if (err > 0 && err < 6) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2069 return errors[err - 1];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2070 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2071
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2072 if (err == NGX_RESOLVE_TIMEDOUT) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2073 return "Operation timed out";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2074 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2075
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2076 return "Unknown error";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2077 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2078
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2079
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2080 static u_char *
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2081 ngx_resolver_log_error(ngx_log_t *log, u_char *buf, size_t len)
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2082 {
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2083 u_char *p;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2084 ngx_udp_connection_t *uc;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2085
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2086 p = buf;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2087
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2088 if (log->action) {
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2089 p = ngx_snprintf(buf, len, " while %s", log->action);
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2090 len -= p - buf;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2091 }
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2092
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2093 uc = log->data;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2094
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2095 if (uc) {
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2096 p = ngx_snprintf(p, len, ", resolver: %V", &uc->server);
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2097 }
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2098
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2099 return p;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2100 }
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2101
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2102
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2103 ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2104 ngx_udp_connect(ngx_udp_connection_t *uc)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2105 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2106 int rc;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2107 ngx_int_t event;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2108 ngx_event_t *rev, *wev;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2109 ngx_socket_t s;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2110 ngx_connection_t *c;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2111
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2112 s = ngx_socket(AF_INET, SOCK_DGRAM, 0);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2113
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2114 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, &uc->log, 0, "UDP socket %d", s);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2115
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2116 if (s == -1) {
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2117 ngx_log_error(NGX_LOG_ALERT, &uc->log, ngx_socket_errno,
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2118 ngx_socket_n " failed");
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2119 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2120 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2121
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2122 c = ngx_get_connection(s, &uc->log);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2123
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2124 if (c == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2125 if (ngx_close_socket(s) == -1) {
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2126 ngx_log_error(NGX_LOG_ALERT, &uc->log, ngx_socket_errno,
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2127 ngx_close_socket_n "failed");
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2128 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2129
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2130 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2131 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2132
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2133 if (ngx_nonblocking(s) == -1) {
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2134 ngx_log_error(NGX_LOG_ALERT, &uc->log, ngx_socket_errno,
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2135 ngx_nonblocking_n " failed");
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2136
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2137 ngx_free_connection(c);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2138
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2139 if (ngx_close_socket(s) == -1) {
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2140 ngx_log_error(NGX_LOG_ALERT, &uc->log, ngx_socket_errno,
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2141 ngx_close_socket_n " failed");
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2142 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2143
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2144 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2145 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2146
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2147 rev = c->read;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2148 wev = c->write;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2149
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2150 rev->log = &uc->log;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2151 wev->log = &uc->log;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2152
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2153 uc->connection = c;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2154
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2155 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2156
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2157 #if (NGX_THREADS)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2158
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2159 /* TODO: lock event when call completion handler */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2160
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2161 rev->lock = &c->lock;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2162 wev->lock = &c->lock;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2163 rev->own_lock = &c->lock;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2164 wev->own_lock = &c->lock;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2165
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2166 #endif
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2167
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2168 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, &uc->log, 0,
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2169 "connect to %V, fd:%d #%d", &uc->server, s, c->number);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2170
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2171 rc = connect(s, uc->sockaddr, uc->socklen);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2172
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2173 /* TODO: aio, iocp */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2174
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2175 if (rc == -1) {
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2176 ngx_log_error(NGX_LOG_CRIT, &uc->log, ngx_socket_errno,
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2177 "connect() failed");
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2178
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2179 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2180 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2181
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2182 /* UDP sockets are always ready to write */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2183 wev->ready = 1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2184
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2185 if (ngx_add_event) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2186
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2187 event = (ngx_event_flags & NGX_USE_CLEAR_EVENT) ?
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2188 /* kqueue, epoll */ NGX_CLEAR_EVENT:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2189 /* select, poll, /dev/poll */ NGX_LEVEL_EVENT;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2190 /* eventport event type has no meaning: oneshot only */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2191
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2192 if (ngx_add_event(rev, NGX_READ_EVENT, event) != NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2193 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2194 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2195
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2196 } else {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2197 /* rtsig */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2198
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2199 if (ngx_add_conn(c) == NGX_ERROR) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2200 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2201 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2202 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2203
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2204 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2205 }