annotate src/core/ngx_resolver.c @ 662:e5fa0a4a7d27 NGINX_1_1_15

nginx 1.1.15 *) Feature: the "disable_symlinks" directive. *) Feature: the "proxy_cookie_domain" and "proxy_cookie_path" directives. *) Bugfix: nginx might log incorrect error "upstream prematurely closed connection" instead of correct "upstream sent too big header" one. Thanks to Feibo Li. *) Bugfix: nginx could not be built with the ngx_http_perl_module if the --with-openssl option was used. *) Bugfix: internal redirects to named locations were not limited. *) Bugfix: calling $r->flush() multiple times might cause errors in the ngx_http_gzip_filter_module. *) Bugfix: temporary files might be not removed if the "proxy_store" directive were used with SSI includes. *) Bugfix: in some cases non-cacheable variables (such as the $args variable) returned old empty cached value. *) Bugfix: a segmentation fault might occur in a worker process if too many SSI subrequests were issued simultaneously; the bug had appeared in 0.7.25.
author Igor Sysoev <http://sysoev.ru>
date Wed, 15 Feb 2012 00:00:00 +0400
parents d0f7a625f27c
children f5b859b2f097
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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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15
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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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51 ngx_int_t ngx_udp_connect(ngx_udp_connection_t *uc);
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53
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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_str_t *names, ngx_uint_t n)
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96 {
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97 ngx_str_t s;
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98 ngx_url_t u;
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99 ngx_uint_t i;
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100 ngx_resolver_t *r;
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101 ngx_pool_cleanup_t *cln;
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102 ngx_udp_connection_t *uc;
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103
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104 cln = ngx_pool_cleanup_add(cf->pool, 0);
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105 if (cln == NULL) {
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106 return NULL;
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107 }
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108
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109 cln->handler = ngx_resolver_cleanup;
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110
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111 r = ngx_calloc(sizeof(ngx_resolver_t), cf->log);
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112 if (r == NULL) {
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113 return NULL;
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114 }
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115
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116 if (n) {
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117 if (ngx_array_init(&r->udp_connections, cf->pool, n,
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118 sizeof(ngx_udp_connection_t))
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119 != NGX_OK)
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120 {
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121 return NULL;
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122 }
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123 }
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124
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125 cln->data = r;
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126
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127 r->event = ngx_calloc(sizeof(ngx_event_t), cf->log);
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128 if (r->event == NULL) {
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129 return NULL;
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130 }
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131
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132 ngx_rbtree_init(&r->name_rbtree, &r->name_sentinel,
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133 ngx_resolver_rbtree_insert_value);
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134
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135 ngx_rbtree_init(&r->addr_rbtree, &r->addr_sentinel,
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136 ngx_rbtree_insert_value);
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137
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
138 ngx_queue_init(&r->name_resend_queue);
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
139 ngx_queue_init(&r->addr_resend_queue);
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
140
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
141 ngx_queue_init(&r->name_expire_queue);
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
142 ngx_queue_init(&r->addr_expire_queue);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
143
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
144 r->event->handler = ngx_resolver_resend_handler;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
145 r->event->data = r;
484
ed5e10fb40fc nginx 0.7.54
Igor Sysoev <http://sysoev.ru>
parents: 442
diff changeset
146 r->event->log = &cf->cycle->new_log;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
147 r->ident = -1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
148
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
149 r->resend_timeout = 5;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
150 r->expire = 30;
650
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
151 r->valid = 0;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
152
484
ed5e10fb40fc nginx 0.7.54
Igor Sysoev <http://sysoev.ru>
parents: 442
diff changeset
153 r->log = &cf->cycle->new_log;
598
be70f83b184f nginx 0.8.51
Igor Sysoev <http://sysoev.ru>
parents: 582
diff changeset
154 r->log_level = NGX_LOG_ERR;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
155
646
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
156 for (i = 0; i < n; i++) {
650
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
157 if (ngx_strncmp(names[i].data, "valid=", 6) == 0) {
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
158 s.len = names[i].len - 6;
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
159 s.data = names[i].data + 6;
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
160
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
161 r->valid = ngx_parse_time(&s, 1);
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
162
662
e5fa0a4a7d27 nginx 1.1.15
Igor Sysoev <http://sysoev.ru>
parents: 660
diff changeset
163 if (r->valid == (time_t) NGX_ERROR) {
650
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
164 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
165 "invalid parameter: %V", &names[i]);
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
166 return NULL;
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
167 }
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
168
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
169 continue;
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
170 }
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
171
646
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
172 ngx_memzero(&u, sizeof(ngx_url_t));
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
173
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
174 u.host = names[i];
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
175 u.port = 53;
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
176
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
177 if (ngx_inet_resolve_host(cf->pool, &u) != NGX_OK) {
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
178 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%V: %s", &u.host, u.err);
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
179 return NULL;
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
180 }
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
181
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
182 uc = ngx_array_push(&r->udp_connections);
354
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
183 if (uc == NULL) {
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
184 return NULL;
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
185 }
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
186
646
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
187 ngx_memzero(uc, sizeof(ngx_udp_connection_t));
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
188
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
189 uc->sockaddr = u.addrs->sockaddr;
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
190 uc->socklen = u.addrs->socklen;
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
191 uc->server = u.addrs->name;
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
192
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
193 uc->log = cf->cycle->new_log;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
194 uc->log.handler = ngx_resolver_log_error;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
195 uc->log.data = uc;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
196 uc->log.action = "resolving";
354
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
197 }
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
198
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
199 return r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
200 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
201
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
202
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
203 static void
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
204 ngx_resolver_cleanup(void *data)
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_resolver_t *r = data;
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
207
646
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
208 ngx_uint_t i;
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
209 ngx_udp_connection_t *uc;
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
210
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
211 if (r) {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
212 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
213 "cleanup resolver");
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_cleanup_tree(r, &r->name_rbtree);
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 ngx_resolver_cleanup_tree(r, &r->addr_rbtree);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
218
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
219 if (r->event) {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
220 ngx_free(r->event);
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
646
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
223
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
224 uc = r->udp_connections.elts;
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
225
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
226 for (i = 0; i < r->udp_connections.nelts; i++) {
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
227 if (uc[i].connection) {
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
228 ngx_close_connection(uc[i].connection);
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
229 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
230 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
231
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
232 ngx_free(r);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
233 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
234 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
235
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
236
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
237 static void
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
238 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
239 {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
240 ngx_resolver_ctx_t *ctx, *next;
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
241 ngx_resolver_node_t *rn;
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
242
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
243 while (tree->root != tree->sentinel) {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
244
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
245 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
246
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
247 ngx_queue_remove(&rn->queue);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
248
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
249 for (ctx = rn->waiting; ctx; ctx = next) {
376
edf1cb6c328e nginx 0.7.0
Igor Sysoev <http://sysoev.ru>
parents: 372
diff changeset
250 next = ctx->next;
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
251
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
252 if (ctx->event) {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
253 ngx_resolver_free(r, ctx->event);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
254 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
255
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
256 ngx_resolver_free(r, ctx);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
257 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
258
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
259 ngx_rbtree_delete(tree, &rn->node);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
260
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
261 ngx_resolver_free_node(r, rn);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
262 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
263 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
264
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
265
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
266 ngx_resolver_ctx_t *
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
267 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
268 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
269 in_addr_t addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
270 ngx_resolver_ctx_t *ctx;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
271
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
272 if (temp) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
273 addr = ngx_inet_addr(temp->name.data, temp->name.len);
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 if (addr != INADDR_NONE) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
276 temp->resolver = r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
277 temp->state = NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
278 temp->naddrs = 1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
279 temp->addrs = &temp->addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
280 temp->addr = addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
281 temp->quick = 1;
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 return temp;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
284 }
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
646
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
287 if (r->udp_connections.nelts == 0) {
354
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
288 return NGX_NO_RESOLVER;
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
289 }
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
290
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
291 ctx = ngx_resolver_calloc(r, sizeof(ngx_resolver_ctx_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
292
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
293 if (ctx) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
294 ctx->resolver = r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
295 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
296
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
297 return ctx;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
298 }
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 ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
302 ngx_resolve_name(ngx_resolver_ctx_t *ctx)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
303 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
304 ngx_int_t rc;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
305 ngx_resolver_t *r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
306
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
307 r = ctx->resolver;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
308
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
309 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
310 "resolve: \"%V\"", &ctx->name);
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 if (ctx->quick) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
313 ctx->handler(ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
314 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
315 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
316
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
317 /* lock name mutex */
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 rc = ngx_resolve_name_locked(r, ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
320
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
321 if (rc == NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
322 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
323 }
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 /* unlock name mutex */
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 if (rc == NGX_AGAIN) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
328 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
329 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
330
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
331 /* NGX_ERROR */
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
332
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
333 if (ctx->event) {
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
334 ngx_resolver_free(r, ctx->event);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
335 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
336
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
337 ngx_resolver_free(r, ctx);
350
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 return NGX_ERROR;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
343 void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
344 ngx_resolve_name_done(ngx_resolver_ctx_t *ctx)
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 uint32_t hash;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
347 ngx_resolver_t *r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
348 ngx_resolver_ctx_t *w, **p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
349 ngx_resolver_node_t *rn;
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 r = ctx->resolver;
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_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
354 "resolve name done: %i", ctx->state);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
355
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
356 if (ctx->quick) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
357 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
358 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
359
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
360 if (ctx->event && ctx->event->timer_set) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
361 ngx_del_timer(ctx->event);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
362 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
363
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
364 /* lock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
365
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
366 if (ctx->state == NGX_AGAIN || ctx->state == NGX_RESOLVE_TIMEDOUT) {
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 hash = ngx_crc32_short(ctx->name.data, ctx->name.len);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
369
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
370 rn = ngx_resolver_lookup_name(r, &ctx->name, hash);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
371
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
372 if (rn) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
373 p = &rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
374 w = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
375
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
376 while (w) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
377 if (w == ctx) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
378 *p = w->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
379
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
380 goto done;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
381 }
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 p = &w->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
384 w = w->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
385 }
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
388 ngx_log_error(NGX_LOG_ALERT, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
389 "could not cancel %V resolving", &ctx->name);
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
392 done:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
393
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
394 ngx_resolver_expire(r, &r->name_rbtree, &r->name_expire_queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
395
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
396 /* unlock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
397
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
398 /* lock alloc mutex */
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
399
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
400 if (ctx->event) {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
401 ngx_resolver_free_locked(r, ctx->event);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
402 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
403
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
404 ngx_resolver_free_locked(r, ctx);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
405
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
406 /* unlock alloc mutex */
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
407 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
408
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 /* NGX_RESOLVE_A only */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
411
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
412 static ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
413 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
414 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
415 uint32_t hash;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
416 in_addr_t addr, *addrs;
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
417 ngx_int_t rc;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
418 ngx_uint_t naddrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
419 ngx_resolver_ctx_t *next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
420 ngx_resolver_node_t *rn;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
421
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
422 hash = ngx_crc32_short(ctx->name.data, ctx->name.len);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
423
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
424 rn = ngx_resolver_lookup_name(r, &ctx->name, hash);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
425
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
426 if (rn) {
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 if (rn->valid >= ngx_time()) {
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 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
431
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
432 ngx_queue_remove(&rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
433
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
434 rn->expire = ngx_time() + r->expire;
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 ngx_queue_insert_head(&r->name_expire_queue, &rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
437
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
438 naddrs = rn->naddrs;
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 if (naddrs) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
441
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
442 /* NGX_RESOLVE_A answer */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
443
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
444 if (naddrs != 1) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
445 addr = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
446 addrs = ngx_resolver_dup(r, rn->u.addrs,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
447 naddrs * sizeof(in_addr_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
448 if (addrs == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
449 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
450 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
451
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
452 } else {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
453 addr = rn->u.addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
454 addrs = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
455 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
456
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
457 ctx->next = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
458 rn->waiting = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
459
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
460 /* unlock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
461
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
462 do {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
463 ctx->state = NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
464 ctx->naddrs = naddrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
465 ctx->addrs = (naddrs == 1) ? &ctx->addr : addrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
466 ctx->addr = addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
467 next = ctx->next;
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->handler(ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
470
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
471 ctx = next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
472 } while (ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
473
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
474 if (addrs) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
475 ngx_resolver_free(r, addrs);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
476 }
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 return NGX_OK;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
481 /* NGX_RESOLVE_CNAME */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
482
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
483 if (ctx->recursion++ < NGX_RESOLVER_MAX_RECURSION) {
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
484
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
485 ctx->name.len = rn->cnlen;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
486 ctx->name.data = rn->u.cname;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
487
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
488 return ngx_resolve_name_locked(r, ctx);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
489 }
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
490
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
491 ctx->next = rn->waiting;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
492 rn->waiting = NULL;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
493
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
494 /* unlock name mutex */
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
495
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
496 do {
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
497 ctx->state = NGX_RESOLVE_NXDOMAIN;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
498 next = ctx->next;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
499
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
500 ctx->handler(ctx);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
501
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
502 ctx = next;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
503 } while (ctx);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
504
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
505 return NGX_OK;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
506 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
507
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
508 if (rn->waiting) {
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 ctx->next = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
511 rn->waiting = ctx;
542
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
512 ctx->state = NGX_AGAIN;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
513
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
514 return NGX_AGAIN;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
515 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
516
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
517 ngx_queue_remove(&rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
518
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
519 /* lock alloc mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
520
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
521 ngx_resolver_free_locked(r, rn->query);
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
522 rn->query = NULL;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
523
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
524 if (rn->cnlen) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
525 ngx_resolver_free_locked(r, rn->u.cname);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
526 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
527
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
528 if (rn->naddrs > 1) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
529 ngx_resolver_free_locked(r, rn->u.addrs);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
530 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
531
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
532 /* unlock alloc mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
533
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
534 } else {
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 rn = ngx_resolver_alloc(r, sizeof(ngx_resolver_node_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
537 if (rn == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
538 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
539 }
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 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
542 if (rn->name == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
543 ngx_resolver_free(r, rn);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
544 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
545 }
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 rn->node.key = hash;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
548 rn->nlen = (u_short) ctx->name.len;
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
549 rn->query = NULL;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
550
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
551 ngx_rbtree_insert(&r->name_rbtree, &rn->node);
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
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
554 rc = ngx_resolver_create_name_query(rn, ctx);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
555
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
556 if (rc == NGX_ERROR) {
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
557 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
558 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
559
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
560 if (rc == NGX_DECLINED) {
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
561 ngx_rbtree_delete(&r->name_rbtree, &rn->node);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
562
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
563 ngx_resolver_free(r, rn->query);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
564 ngx_resolver_free(r, rn->name);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
565 ngx_resolver_free(r, rn);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
566
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
567 ctx->state = NGX_RESOLVE_NXDOMAIN;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
568 ctx->handler(ctx);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
569
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
570 return NGX_OK;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
571 }
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
572
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
573 if (ngx_resolver_send_query(r, rn) != NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
574 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
575 }
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 if (ctx->event == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
578 ctx->event = ngx_resolver_calloc(r, sizeof(ngx_event_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
579 if (ctx->event == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
580 goto failed;
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 ctx->event->handler = ngx_resolver_timeout_handler;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
584 ctx->event->data = ctx;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
585 ctx->event->log = r->log;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
586 ctx->ident = -1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
587
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
588 ngx_add_timer(ctx->event, ctx->timeout);
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
591 if (ngx_queue_empty(&r->name_resend_queue)) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
592 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
593 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
594
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
595 rn->expire = ngx_time() + r->resend_timeout;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
596
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
597 ngx_queue_insert_head(&r->name_resend_queue, &rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
598
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
599 rn->cnlen = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
600 rn->naddrs = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
601 rn->valid = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
602 rn->waiting = ctx;
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 ctx->state = NGX_AGAIN;
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 return NGX_AGAIN;
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 failed:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
609
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
610 ngx_rbtree_delete(&r->name_rbtree, &rn->node);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
611
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
612 if (rn->query) {
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
613 ngx_resolver_free(r, rn->query);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
614 }
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
615
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
616 ngx_resolver_free(r, rn->name);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
617
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
618 ngx_resolver_free(r, rn);
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 return NGX_ERROR;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
623
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
624 ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
625 ngx_resolve_addr(ngx_resolver_ctx_t *ctx)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
626 {
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
627 u_char *name;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
628 ngx_resolver_t *r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
629 ngx_resolver_node_t *rn;
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 r = ctx->resolver;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
632
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
633 ctx->addr = ntohl(ctx->addr);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
634
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
635 /* lock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
636
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
637 rn = ngx_resolver_lookup_addr(r, ctx->addr);
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 if (rn) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
640
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
641 if (rn->valid >= ngx_time()) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
642
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
643 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
644
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
645 ngx_queue_remove(&rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
646
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
647 rn->expire = ngx_time() + r->expire;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
648
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
649 ngx_queue_insert_head(&r->addr_expire_queue, &rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
650
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
651 name = ngx_resolver_dup(r, rn->name, rn->nlen);
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
652 if (name == NULL) {
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
653 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
654 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
655
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
656 ctx->name.len = rn->nlen;
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
657 ctx->name.data = name;
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
658
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
659 /* unlock addr mutex */
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 ctx->state = NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
662
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
663 ctx->handler(ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
664
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
665 ngx_resolver_free(r, name);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
666
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
667 return NGX_OK;
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 if (rn->waiting) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
671
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
672 ctx->next = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
673 rn->waiting = ctx;
542
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
674 ctx->state = NGX_AGAIN;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
675
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
676 /* unlock addr mutex */
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
677
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
678 return NGX_OK;
350
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 ngx_queue_remove(&rn->queue);
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_resolver_free(r, rn->query);
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
684 rn->query = NULL;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
685
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
686 } else {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
687 rn = ngx_resolver_alloc(r, sizeof(ngx_resolver_node_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
688 if (rn == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
689 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
690 }
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 rn->node.key = ctx->addr;
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
693 rn->query = NULL;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
694
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
695 ngx_rbtree_insert(&r->addr_rbtree, &rn->node);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
696 }
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 if (ngx_resolver_create_addr_query(rn, ctx) != NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
699 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
700 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
701
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
702 if (ngx_resolver_send_query(r, rn) != NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
703 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
704 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
705
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
706 ctx->event = ngx_resolver_calloc(r, sizeof(ngx_event_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
707 if (ctx->event == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
708 goto failed;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
711 ctx->event->handler = ngx_resolver_timeout_handler;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
712 ctx->event->data = ctx;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
713 ctx->event->log = r->log;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
714 ctx->ident = -1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
715
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
716 ngx_add_timer(ctx->event, ctx->timeout);
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 if (ngx_queue_empty(&r->addr_resend_queue)) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
719 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
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 rn->expire = ngx_time() + r->resend_timeout;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
723
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
724 ngx_queue_insert_head(&r->addr_resend_queue, &rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
725
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
726 rn->cnlen = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
727 rn->naddrs = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
728 rn->name = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
729 rn->nlen = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
730 rn->valid = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
731 rn->waiting = ctx;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
732
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
733 /* unlock addr mutex */
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 ctx->state = NGX_AGAIN;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
736
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
737 return NGX_OK;
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 failed:
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 (rn) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
742 ngx_rbtree_delete(&r->addr_rbtree, &rn->node);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
743
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
744 if (rn->query) {
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
745 ngx_resolver_free(r, rn->query);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
746 }
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
747
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
748 ngx_resolver_free(r, rn);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
749 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
750
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
751 /* unlock addr mutex */
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 if (ctx->event) {
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
754 ngx_resolver_free(r, ctx->event);
350
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
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
757 ngx_resolver_free(r, ctx);
350
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 return NGX_ERROR;
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
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 void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
764 ngx_resolve_addr_done(ngx_resolver_ctx_t *ctx)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
765 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
766 in_addr_t addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
767 ngx_resolver_t *r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
768 ngx_resolver_ctx_t *w, **p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
769 ngx_resolver_node_t *rn;
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 r = ctx->resolver;
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 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
774 "resolve addr done: %i", ctx->state);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
775
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
776 if (ctx->event && ctx->event->timer_set) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
777 ngx_del_timer(ctx->event);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
778 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
779
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
780 /* lock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
781
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
782 if (ctx->state == NGX_AGAIN || ctx->state == NGX_RESOLVE_TIMEDOUT) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
783
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
784 rn = ngx_resolver_lookup_addr(r, ctx->addr);
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 if (rn) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
787 p = &rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
788 w = rn->waiting;
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 while (w) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
791 if (w == ctx) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
792 *p = w->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
793
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
794 goto done;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
795 }
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 p = &w->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
798 w = w->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
799 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
800 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
801
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
802 addr = ntohl(ctx->addr);
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 ngx_log_error(NGX_LOG_ALERT, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
805 "could not cancel %ud.%ud.%ud.%ud resolving",
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
806 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
807 (addr >> 8) & 0xff, addr & 0xff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
808 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
809
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
810 done:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
811
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
812 ngx_resolver_expire(r, &r->addr_rbtree, &r->addr_expire_queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
813
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
814 /* unlock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
815
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
816 /* lock alloc mutex */
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
817
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
818 if (ctx->event) {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
819 ngx_resolver_free_locked(r, ctx->event);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
820 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
821
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
822 ngx_resolver_free_locked(r, ctx);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
823
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
824 /* unlock alloc mutex */
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
825 }
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
828 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
829 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
830 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
831 time_t now;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
832 ngx_uint_t i;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
833 ngx_queue_t *q;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
834 ngx_resolver_node_t *rn;
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 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
837
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
838 now = ngx_time();
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
839
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
840 for (i = 0; i < 2; i++) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
841 if (ngx_queue_empty(queue)) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
842 return;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
845 q = ngx_queue_last(queue);
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 rn = ngx_queue_data(q, ngx_resolver_node_t, queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
848
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
849 if (now <= rn->expire) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
850 return;
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
358
9121a0a91f47 nginx 0.6.23
Igor Sysoev <http://sysoev.ru>
parents: 356
diff changeset
853 ngx_log_debug2(NGX_LOG_DEBUG_CORE, r->log, 0,
9121a0a91f47 nginx 0.6.23
Igor Sysoev <http://sysoev.ru>
parents: 356
diff changeset
854 "resolver expire \"%*s\"", (size_t) rn->nlen, rn->name);
350
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 ngx_queue_remove(q);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
857
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
858 ngx_rbtree_delete(tree, &rn->node);
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 ngx_resolver_free_node(r, rn);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
861 }
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
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 static ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
866 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
867 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
868 ssize_t n;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
869 ngx_udp_connection_t *uc;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
870
646
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
871 uc = r->udp_connections.elts;
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
872
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
873 uc = &uc[r->last_connection++];
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
874 if (r->last_connection == r->udp_connections.nelts) {
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
875 r->last_connection = 0;
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
876 }
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
877
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
878 if (uc->connection == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
879 if (ngx_udp_connect(uc) != NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
880 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
881 }
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 uc->connection->data = r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
884 uc->connection->read->handler = ngx_resolver_read_response;
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
885 uc->connection->read->resolver = 1;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
886 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
887
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
888 n = ngx_send(uc->connection, rn->query, rn->qlen);
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 (n == -1) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
891 return NGX_ERROR;
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 if ((size_t) n != (size_t) rn->qlen) {
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
895 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
896 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
897 }
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 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
900 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
901
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 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
904 ngx_resolver_resend_handler(ngx_event_t *ev)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
905 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
906 time_t timer, atimer, ntimer;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
907 ngx_resolver_t *r;
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 r = ev->data;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
910
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
911 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
912 "resolver resend handler");
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 /* lock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
915
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
916 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
917
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
918 /* unlock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
919
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
920 /* lock addr mutex */
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 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
923
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
924 /* unlock addr mutex */
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 (ntimer == 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
927 timer = atimer;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
928
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
929 } else if (atimer == 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
930 timer = ntimer;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
931
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
932 } else {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
933 timer = (atimer < ntimer) ? atimer : ntimer;
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 if (timer) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
937 ngx_add_timer(r->event, (ngx_msec_t) (timer * 1000));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
938 }
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 static time_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
943 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
944 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
945 time_t now;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
946 ngx_queue_t *q;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
947 ngx_resolver_node_t *rn;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
948
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
949 now = ngx_time();
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
950
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
951 for ( ;; ) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
952 if (ngx_queue_empty(queue)) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
953 return 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
954 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
955
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
956 q = ngx_queue_last(queue);
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 rn = ngx_queue_data(q, ngx_resolver_node_t, queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
959
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
960 if (now < rn->expire) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
961 return rn->expire - now;
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
358
9121a0a91f47 nginx 0.6.23
Igor Sysoev <http://sysoev.ru>
parents: 356
diff changeset
964 ngx_log_debug3(NGX_LOG_DEBUG_CORE, r->log, 0,
9121a0a91f47 nginx 0.6.23
Igor Sysoev <http://sysoev.ru>
parents: 356
diff changeset
965 "resolver resend \"%*s\" %p",
9121a0a91f47 nginx 0.6.23
Igor Sysoev <http://sysoev.ru>
parents: 356
diff changeset
966 (size_t) rn->nlen, rn->name, rn->waiting);
350
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 ngx_queue_remove(q);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
969
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
970 if (rn->waiting) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
971
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
972 if (ngx_resolver_send_query(r, rn) == NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
973
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
974 rn->expire = now + r->resend_timeout;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
975
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
976 ngx_queue_insert_head(queue, &rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
977 }
364
a39aab45a53f nginx 0.6.26
Igor Sysoev <http://sysoev.ru>
parents: 358
diff changeset
978
a39aab45a53f nginx 0.6.26
Igor Sysoev <http://sysoev.ru>
parents: 358
diff changeset
979 continue;
350
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
982 ngx_rbtree_delete(tree, &rn->node);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
983
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
984 ngx_resolver_free_node(r, rn);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
985 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
986 }
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
989 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
990 ngx_resolver_read_response(ngx_event_t *rev)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
991 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
992 ssize_t n;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
993 ngx_connection_t *c;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
994 u_char buf[NGX_RESOLVER_UDP_SIZE];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
995
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
996 c = rev->data;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
997
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
998 do {
354
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
999 n = ngx_udp_recv(c, buf, NGX_RESOLVER_UDP_SIZE);
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
1000
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
1001 if (n < 0) {
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1002 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1003 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1004
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1005 ngx_resolver_process_response(c->data, buf, n);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1006
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1007 } while (rev->ready);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1008 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1009
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1010
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1011 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1012 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
1013 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1014 char *err;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1015 size_t len;
416
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1016 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
1017 qtype, qclass;
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1018 ngx_queue_t *q;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1019 ngx_resolver_qs_t *qs;
416
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1020 ngx_resolver_node_t *rn;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1021 ngx_resolver_query_t *query;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1022
416
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1023 if ((size_t) n < sizeof(ngx_resolver_query_t)) {
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1024 goto short_response;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1025 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1026
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1027 query = (ngx_resolver_query_t *) buf;
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 ident = (query->ident_hi << 8) + query->ident_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1030 flags = (query->flags_hi << 8) + query->flags_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1031 nqs = (query->nqs_hi << 8) + query->nqs_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1032 nan = (query->nan_hi << 8) + query->nan_lo;
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 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
1035 "resolver DNS response %ui fl:%04Xui %ui/%ui/%ui/%ui",
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1036 ident, flags, nqs, nan,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1037 (query->nns_hi << 8) + query->nns_lo,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1038 (query->nar_hi << 8) + query->nar_lo);
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 if (!(flags & 0x8000)) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1041 ngx_log_error(r->log_level, r->log, 0,
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1042 "invalid DNS response %ui fl:%04Xui", ident, flags);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1043 return;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1046 code = flags & 0x7f;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1047
416
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1048 if (code == NGX_RESOLVE_FORMERR) {
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1049
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1050 times = 0;
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1051
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1052 for (q = ngx_queue_head(&r->name_resend_queue);
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1053 q != ngx_queue_sentinel(&r->name_resend_queue) || times++ < 100;
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1054 q = ngx_queue_next(q))
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1055 {
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1056 rn = ngx_queue_data(q, ngx_resolver_node_t, queue);
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1057 qident = (rn->query[0] << 8) + rn->query[1];
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1058
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1059 if (qident == ident) {
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1060 ngx_log_error(r->log_level, r->log, 0,
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1061 "DNS error (%ui: %s), query id:%ui, name:\"%*s\"",
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1062 code, ngx_resolver_strerror(code), ident,
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1063 rn->nlen, rn->name);
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1064 return;
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1065 }
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1066 }
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1067
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1068 goto dns_error;
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1069 }
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1070
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1071 if (code > NGX_RESOLVE_REFUSED) {
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1072 goto dns_error;
350
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1075 if (nqs != 1) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1076 err = "invalid number of questions in DNS response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1077 goto done;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1078 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1079
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1080 i = sizeof(ngx_resolver_query_t);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1081
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1082 while (i < (ngx_uint_t) n) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1083 if (buf[i] == '\0') {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1084 goto found;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1085 }
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 len = buf[i];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1088 i += 1 + len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1089 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1090
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1091 goto short_response;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1092
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1093 found:
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 if (i++ == 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1096 err = "zero-length domain name in DNS response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1097 goto done;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1100 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
1101 > (ngx_uint_t) n)
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 goto short_response;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1106 qs = (ngx_resolver_qs_t *) &buf[i];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1107
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1108 qtype = (qs->type_hi << 8) + qs->type_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1109 qclass = (qs->class_hi << 8) + qs->class_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1110
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1111 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
1112 "resolver DNS response qt:%ui cl:%ui", qtype, qclass);
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 if (qclass != 1) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1115 ngx_log_error(r->log_level, r->log, 0,
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1116 "unknown query class %ui in DNS response", qclass);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1117 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1118 }
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 switch (qtype) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1121
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1122 case NGX_RESOLVE_A:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1123
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1124 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
1125 i + sizeof(ngx_resolver_qs_t));
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1126
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1127 break;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1128
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1129 case NGX_RESOLVE_PTR:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1130
356
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1131 ngx_resolver_process_ptr(r, buf, n, ident, code, nan);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1132
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1133 break;
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 default:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1136 ngx_log_error(r->log_level, r->log, 0,
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1137 "unknown query type %ui in DNS response", qtype);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1138 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1139 }
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 return;
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 short_response:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1144
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1145 err = "short dns response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1146
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1147 done:
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 ngx_log_error(r->log_level, r->log, 0, err);
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 return;
416
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1152
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1153 dns_error:
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1154
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1155 ngx_log_error(r->log_level, r->log, 0,
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1156 "DNS error (%ui: %s), query id:%ui",
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1157 code, ngx_resolver_strerror(code), ident);
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1158 return;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1159 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1160
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1161
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1162 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1163 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
1164 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
1165 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1166 char *err;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1167 u_char *cname;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1168 size_t len;
650
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1169 int32_t ttl;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1170 uint32_t hash;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1171 in_addr_t addr, *addrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1172 ngx_str_t name;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1173 ngx_uint_t qtype, qident, naddrs, a, i, n, start;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1174 ngx_resolver_an_t *an;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1175 ngx_resolver_ctx_t *ctx, *next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1176 ngx_resolver_node_t *rn;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1177
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1178 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
1179 return;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1182 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
1183
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1184 hash = ngx_crc32_short(name.data, name.len);
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 /* lock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1187
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1188 rn = ngx_resolver_lookup_name(r, &name, hash);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1189
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1190 if (rn == NULL || rn->query == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1191 ngx_log_error(r->log_level, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1192 "unexpected response for %V", &name);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1193 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1194 }
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 qident = (rn->query[0] << 8) + rn->query[1];
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 if (ident != qident) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1199 ngx_log_error(r->log_level, r->log, 0,
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1200 "wrong ident %ui response for %V, expect %ui",
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1201 ident, &name, qident);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1202 goto failed;
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
528
005a70f9573b nginx 0.8.16
Igor Sysoev <http://sysoev.ru>
parents: 484
diff changeset
1205 ngx_resolver_free(r, name.data);
005a70f9573b nginx 0.8.16
Igor Sysoev <http://sysoev.ru>
parents: 484
diff changeset
1206
356
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1207 if (code == 0 && nan == 0) {
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1208 code = 3; /* NXDOMAIN */
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1209 }
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1210
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1211 if (code) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1212 next = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1213 rn->waiting = NULL;
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 ngx_queue_remove(&rn->queue);
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 ngx_rbtree_delete(&r->name_rbtree, &rn->node);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1218
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1219 ngx_resolver_free_node(r, rn);
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 /* unlock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1222
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1223 while (next) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1224 ctx = next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1225 ctx->state = code;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1226 next = ctx->next;
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 ctx->handler(ctx);
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1231 return;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1234 i = ans;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1235 naddrs = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1236 addr = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1237 addrs = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1238 cname = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1239 qtype = 0;
650
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1240 ttl = 0;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1241
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1242 for (a = 0; a < nan; a++) {
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 start = i;
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 while (i < last) {
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 if (buf[i] & 0xc0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1249 i += 2;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1250 goto found;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1251 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1252
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1253 if (buf[i] == 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1254 i++;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1255 goto test_length;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1256 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1257
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1258 i += 1 + buf[i];
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 goto short_response;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1262
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1263 test_length:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1264
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1265 if (i - start < 2) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1266 err = "invalid name in dns response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1267 goto invalid;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1270 found:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1271
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1272 if (i + sizeof(ngx_resolver_an_t) >= last) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1273 goto short_response;
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 an = (ngx_resolver_an_t *) &buf[i];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1277
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1278 qtype = (an->type_hi << 8) + an->type_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1279 len = (an->len_hi << 8) + an->len_lo;
650
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1280 ttl = (an->ttl[0] << 24) + (an->ttl[1] << 16)
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1281 + (an->ttl[2] << 8) + (an->ttl[3]);
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1282
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1283 if (ttl < 0) {
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1284 ttl = 0;
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1285 }
350
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 if (qtype == NGX_RESOLVE_A) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1288
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1289 i += sizeof(ngx_resolver_an_t);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1290
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1291 if (i + len > last) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1292 goto short_response;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1293 }
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 addr = htonl((buf[i] << 24) + (buf[i + 1] << 16)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1296 + (buf[i + 2] << 8) + (buf[i + 3]));
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 naddrs++;
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 i += len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1301
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1302 } else if (qtype == NGX_RESOLVE_CNAME) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1303 cname = &buf[i] + sizeof(ngx_resolver_an_t);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1304 i += sizeof(ngx_resolver_an_t) + len;
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1305
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1306 } else if (qtype == NGX_RESOLVE_DNAME) {
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1307 i += sizeof(ngx_resolver_an_t) + len;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1308
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1309 } else {
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1310 ngx_log_error(r->log_level, r->log, 0,
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1311 "unexpected qtype %ui", qtype);
350
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
650
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1315 ngx_log_debug3(NGX_LOG_DEBUG_CORE, r->log, 0,
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1316 "resolver naddrs:%ui cname:%p ttl:%d",
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1317 naddrs, cname, ttl);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1318
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1319 if (naddrs) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1320
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1321 if (naddrs == 1) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1322 rn->u.addr = addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1323
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1324 } else {
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 addrs = ngx_resolver_alloc(r, naddrs * sizeof(in_addr_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1327 if (addrs == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1328 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1329 }
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 n = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1332 i = ans;
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 for (a = 0; a < nan; a++) {
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 for ( ;; ) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1337
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1338 if (buf[i] & 0xc0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1339 i += 2;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1340 goto ok;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1341 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1342
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1343 if (buf[i] == 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1344 i++;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1345 goto ok;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1346 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1347
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1348 i += 1 + buf[i];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1349 }
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 ok:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1352
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1353 an = (ngx_resolver_an_t *) &buf[i];
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 qtype = (an->type_hi << 8) + an->type_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1356 len = (an->len_hi << 8) + an->len_lo;
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 i += sizeof(ngx_resolver_an_t);
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 if (qtype == NGX_RESOLVE_A) {
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 addrs[n++] = htonl((buf[i] << 24) + (buf[i + 1] << 16)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1363 + (buf[i + 2] << 8) + (buf[i + 3]));
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 if (n == naddrs) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1366 break;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1367 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1368 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1369
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1370 i += len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1371 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1372
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1373 rn->u.addrs = addrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1374
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1375 addrs = ngx_resolver_dup(r, rn->u.addrs,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1376 naddrs * sizeof(in_addr_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1377 if (addrs == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1378 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1379 }
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1382 rn->naddrs = (u_short) naddrs;
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 ngx_queue_remove(&rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1385
650
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1386 rn->valid = ngx_time() + (r->valid ? r->valid : ttl);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1387 rn->expire = ngx_time() + r->expire;
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 ngx_queue_insert_head(&r->name_expire_queue, &rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1390
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1391 next = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1392 rn->waiting = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1393
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1394 /* unlock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1395
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1396 while (next) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1397 ctx = next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1398 ctx->state = NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1399 ctx->naddrs = naddrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1400 ctx->addrs = (naddrs == 1) ? &ctx->addr : addrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1401 ctx->addr = addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1402 next = ctx->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1403
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1404 ctx->handler(ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1405 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1406
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1407 if (naddrs > 1) {
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1408 ngx_resolver_free(r, addrs);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1409 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1410
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1411 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1412
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1413 } else if (cname) {
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 /* CNAME only */
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 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
1418 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1419 }
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 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1422 "resolver cname:\"%V\"", &name);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1423
356
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1424 ngx_queue_remove(&rn->queue);
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1425
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1426 rn->cnlen = (u_short) name.len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1427 rn->u.cname = name.data;
650
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1428
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1429 rn->valid = ngx_time() + (r->valid ? r->valid : ttl);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1430 rn->expire = ngx_time() + r->expire;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1431
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1432 ngx_queue_insert_head(&r->name_expire_queue, &rn->queue);
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 ctx = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1435 rn->waiting = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1436
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1437 if (ctx) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1438 ctx->name = name;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1439
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1440 (void) ngx_resolve_name_locked(r, ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1441 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1442
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1443 return;
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 ngx_log_error(r->log_level, r->log, 0,
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1447 "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
1448 qtype);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1449 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1450
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1451 short_response:
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 err = "short dns response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1454
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1455 invalid:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1456
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1457 /* unlock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1458
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1459 ngx_log_error(r->log_level, r->log, 0, err);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1460
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1461 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1462
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1463 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 /* unlock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1466
528
005a70f9573b nginx 0.8.16
Igor Sysoev <http://sysoev.ru>
parents: 484
diff changeset
1467 ngx_resolver_free(r, name.data);
005a70f9573b nginx 0.8.16
Igor Sysoev <http://sysoev.ru>
parents: 484
diff changeset
1468
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1469 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1470 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1471
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1472
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1473 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1474 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
1475 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
1476 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1477 char *err;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1478 size_t len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1479 in_addr_t addr;
650
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1480 int32_t ttl;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1481 ngx_int_t digit;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1482 ngx_str_t name;
622
8dc007eddbcf nginx 1.0.1
Igor Sysoev <http://sysoev.ru>
parents: 598
diff changeset
1483 ngx_uint_t i, mask, qident;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1484 ngx_resolver_an_t *an;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1485 ngx_resolver_ctx_t *ctx, *next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1486 ngx_resolver_node_t *rn;
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 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
1489 goto invalid_in_addr_arpa;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1490 }
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 addr = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1493 i = 12;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1494
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1495 for (mask = 0; mask < 32; mask += 8) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1496 len = buf[i++];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1497
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1498 digit = ngx_atoi(&buf[i], len);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1499 if (digit == NGX_ERROR || digit > 255) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1500 goto invalid_in_addr_arpa;
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 addr += digit << mask;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1504 i += len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1505 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1506
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1507 if (ngx_strcmp(&buf[i], "\7in-addr\4arpa") != 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1508 goto invalid_in_addr_arpa;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1509 }
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 /* lock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1512
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1513 rn = ngx_resolver_lookup_addr(r, addr);
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 if (rn == NULL || rn->query == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1516 ngx_log_error(r->log_level, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1517 "unexpected response for %ud.%ud.%ud.%ud",
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1518 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1519 (addr >> 8) & 0xff, addr & 0xff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1520 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1521 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1522
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1523 qident = (rn->query[0] << 8) + rn->query[1];
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 if (ident != qident) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1526 ngx_log_error(r->log_level, r->log, 0,
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1527 "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
1528 ident, (addr >> 24) & 0xff, (addr >> 16) & 0xff,
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1529 (addr >> 8) & 0xff, addr & 0xff, qident);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1530 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1531 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1532
356
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1533 if (code == 0 && nan == 0) {
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1534 code = 3; /* NXDOMAIN */
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1535 }
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1536
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1537 if (code) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1538 next = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1539 rn->waiting = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1540
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1541 ngx_queue_remove(&rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1542
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1543 ngx_rbtree_delete(&r->addr_rbtree, &rn->node);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1544
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1545 ngx_resolver_free_node(r, rn);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1546
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1547 /* unlock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1548
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1549 while (next) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1550 ctx = next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1551 ctx->state = code;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1552 next = ctx->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1553
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1554 ctx->handler(ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1555 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1556
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1557 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1558 }
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 i += sizeof("\7in-addr\4arpa") + sizeof(ngx_resolver_qs_t);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1561
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1562 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
1563 goto short_response;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1566 /* compression pointer to "XX.XX.XX.XX.in-addr.arpa */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1567
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1568 if (buf[i] != 0xc0 || buf[i + 1] != 0x0c) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1569 err = "invalid in-addr.arpa name in DNS response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1570 goto invalid;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1571 }
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 an = (ngx_resolver_an_t *) &buf[i + 2];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1574
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1575 len = (an->len_hi << 8) + an->len_lo;
650
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1576 ttl = (an->ttl[0] << 24) + (an->ttl[1] << 16)
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1577 + (an->ttl[2] << 8) + (an->ttl[3]);
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1578
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1579 if (ttl < 0) {
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1580 ttl = 0;
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1581 }
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1582
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1583 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
1584 "resolver qt:%ui cl:%ui len:%uz",
8dc007eddbcf nginx 1.0.1
Igor Sysoev <http://sysoev.ru>
parents: 598
diff changeset
1585 (an->type_hi << 8) + an->type_lo,
8dc007eddbcf nginx 1.0.1
Igor Sysoev <http://sysoev.ru>
parents: 598
diff changeset
1586 (an->class_hi << 8) + an->class_lo, len);
350
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 i += 2 + sizeof(ngx_resolver_an_t);
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 if (i + len > (ngx_uint_t) n) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1591 goto short_response;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1592 }
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 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
1595 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1596 }
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 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
1599
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1600 if (name.len != (size_t) rn->nlen
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1601 || ngx_strncmp(name.data, rn->name, name.len) != 0)
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1602 {
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1603 if (rn->nlen) {
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1604 ngx_resolver_free(r, rn->name);
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1605 }
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1606
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1607 rn->nlen = (u_short) name.len;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1608 rn->name = name.data;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1609
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1610 name.data = ngx_resolver_dup(r, rn->name, name.len);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1611 if (name.data == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1612 goto failed;
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 }
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 ngx_queue_remove(&rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1617
650
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1618 rn->valid = ngx_time() + (r->valid ? r->valid : ttl);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1619 rn->expire = ngx_time() + r->expire;
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 ngx_queue_insert_head(&r->addr_expire_queue, &rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1622
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1623 next = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1624 rn->waiting = NULL;
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 /* unlock addr mutex */
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 while (next) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1629 ctx = next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1630 ctx->state = NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1631 ctx->name = name;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1632 next = ctx->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1633
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1634 ctx->handler(ctx);
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 ngx_resolver_free(r, name.data);
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 return;
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 invalid_in_addr_arpa:
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 ngx_log_error(r->log_level, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1644 "invalid in-addr.arpa name in DNS response");
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1645 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1646
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1647 short_response:
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 err = "short DNS response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1650
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1651 invalid:
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 /* unlock addr mutex */
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 ngx_log_error(r->log_level, r->log, 0, err);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1656
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1657 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1658
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1659 failed:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1660
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1661 /* unlock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1662
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1663 return;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1666
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1667 static ngx_resolver_node_t *
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1668 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
1669 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1670 ngx_int_t rc;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1671 ngx_rbtree_node_t *node, *sentinel;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1672 ngx_resolver_node_t *rn;
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 node = r->name_rbtree.root;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1675 sentinel = r->name_rbtree.sentinel;
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 while (node != sentinel) {
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 if (hash < node->key) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1680 node = node->left;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1681 continue;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1682 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1683
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1684 if (hash > node->key) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1685 node = node->right;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1686 continue;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1689 /* hash == node->key */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1690
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1691 do {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1692 rn = (ngx_resolver_node_t *) node;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1693
528
005a70f9573b nginx 0.8.16
Igor Sysoev <http://sysoev.ru>
parents: 484
diff changeset
1694 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
1695
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1696 if (rc == 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1697 return rn;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1698 }
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 node = (rc < 0) ? node->left : node->right;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1701
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1702 } while (node != sentinel && hash == node->key);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1703
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1704 break;
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 /* not found */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1708
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1709 return NULL;
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
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 static ngx_resolver_node_t *
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1714 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
1715 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1716 ngx_rbtree_node_t *node, *sentinel;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1717
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1718 node = r->addr_rbtree.root;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1719 sentinel = r->addr_rbtree.sentinel;
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 while (node != sentinel) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1722
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1723 if (addr < node->key) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1724 node = node->left;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1725 continue;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1726 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1727
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1728 if (addr > node->key) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1729 node = node->right;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1730 continue;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1731 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1732
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1733 /* addr == node->key */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1734
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1735 return (ngx_resolver_node_t *) node;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1736 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1737
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1738 /* not found */
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 return NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1741 }
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1744 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1745 ngx_resolver_rbtree_insert_value(ngx_rbtree_node_t *temp,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1746 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1747 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1748 ngx_rbtree_node_t **p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1749 ngx_resolver_node_t *rn, *rn_temp;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1750
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1751 for ( ;; ) {
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 if (node->key < temp->key) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1754
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1755 p = &temp->left;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1756
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1757 } else if (node->key > temp->key) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1758
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1759 p = &temp->right;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1760
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1761 } else { /* node->key == temp->key */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1762
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1763 rn = (ngx_resolver_node_t *) node;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1764 rn_temp = (ngx_resolver_node_t *) temp;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1765
528
005a70f9573b nginx 0.8.16
Igor Sysoev <http://sysoev.ru>
parents: 484
diff changeset
1766 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
1767 < 0) ? &temp->left : &temp->right;
350
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1770 if (*p == sentinel) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1771 break;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1772 }
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 temp = *p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1775 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1776
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1777 *p = node;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1778 node->parent = temp;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1779 node->left = sentinel;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1780 node->right = sentinel;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1781 ngx_rbt_red(node);
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1784
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1785 static ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1786 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
1787 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1788 u_char *p, *s;
544
40c366b3535c nginx 0.8.24
Igor Sysoev <http://sysoev.ru>
parents: 542
diff changeset
1789 size_t len, nlen;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1790 ngx_uint_t ident;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1791 ngx_resolver_qs_t *qs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1792 ngx_resolver_query_t *query;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1793
544
40c366b3535c nginx 0.8.24
Igor Sysoev <http://sysoev.ru>
parents: 542
diff changeset
1794 nlen = ctx->name.len ? (1 + ctx->name.len + 1) : 1;
40c366b3535c nginx 0.8.24
Igor Sysoev <http://sysoev.ru>
parents: 542
diff changeset
1795
40c366b3535c nginx 0.8.24
Igor Sysoev <http://sysoev.ru>
parents: 542
diff changeset
1796 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
1797
40c366b3535c nginx 0.8.24
Igor Sysoev <http://sysoev.ru>
parents: 542
diff changeset
1798 p = ngx_resolver_alloc(ctx->resolver, len);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1799 if (p == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1800 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1801 }
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 rn->qlen = (u_short) len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1804 rn->query = p;
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 query = (ngx_resolver_query_t *) p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1807
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1808 ident = ngx_random();
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1809
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1810 ngx_log_debug2(NGX_LOG_DEBUG_CORE, ctx->resolver->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1811 "resolve: \"%V\" %i", &ctx->name, ident & 0xffff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1812
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1813 query->ident_hi = (u_char) ((ident >> 8) & 0xff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1814 query->ident_lo = (u_char) (ident & 0xff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1815
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1816 /* recursion query */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1817 query->flags_hi = 1; query->flags_lo = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1818
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1819 /* one question */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1820 query->nqs_hi = 0; query->nqs_lo = 1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1821 query->nan_hi = 0; query->nan_lo = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1822 query->nns_hi = 0; query->nns_lo = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1823 query->nar_hi = 0; query->nar_lo = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1824
544
40c366b3535c nginx 0.8.24
Igor Sysoev <http://sysoev.ru>
parents: 542
diff changeset
1825 p += sizeof(ngx_resolver_query_t) + nlen;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1826
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1827 qs = (ngx_resolver_qs_t *) p;
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 /* query type */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1830 qs->type_hi = 0; qs->type_lo = (u_char) ctx->type;
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 /* IP query class */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1833 qs->class_hi = 0; qs->class_lo = 1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1834
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1835 /* convert "www.example.com" to "\3www\7example\3com\0" */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1836
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1837 len = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1838 p--;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1839 *p-- = '\0';
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1840
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1841 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
1842 if (*s != '.') {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1843 *p = *s;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1844 len++;
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 } else {
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1847 if (len == 0) {
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1848 return NGX_DECLINED;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1849 }
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1850
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1851 *p = (u_char) len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1852 len = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1853 }
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 p--;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1858 *p = (u_char) len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1859
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1860 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1861 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1862
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1863
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1864 /* AF_INET only */
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 static ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1867 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
1868 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1869 u_char *p, *d;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1870 size_t len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1871 ngx_int_t n;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1872 ngx_uint_t ident;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1873 ngx_resolver_query_t *query;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1874
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1875 len = sizeof(ngx_resolver_query_t)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1876 + sizeof(".255.255.255.255.in-addr.arpa.") - 1
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1877 + sizeof(ngx_resolver_qs_t);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1878
544
40c366b3535c nginx 0.8.24
Igor Sysoev <http://sysoev.ru>
parents: 542
diff changeset
1879 p = ngx_resolver_alloc(ctx->resolver, len);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1880 if (p == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1881 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1882 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1883
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1884 rn->query = p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1885 query = (ngx_resolver_query_t *) p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1886
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1887 ident = ngx_random();
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 query->ident_hi = (u_char) ((ident >> 8) & 0xff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1890 query->ident_lo = (u_char) (ident & 0xff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1891
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1892 /* recursion query */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1893 query->flags_hi = 1; query->flags_lo = 0;
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 /* one question */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1896 query->nqs_hi = 0; query->nqs_lo = 1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1897 query->nan_hi = 0; query->nan_lo = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1898 query->nns_hi = 0; query->nns_lo = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1899 query->nar_hi = 0; query->nar_lo = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1900
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1901 p += sizeof(ngx_resolver_query_t);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1902
582
c456a023113c nginx 0.8.43
Igor Sysoev <http://sysoev.ru>
parents: 560
diff changeset
1903 for (n = 0; n < 32; n += 8) {
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1904 d = ngx_sprintf(&p[1], "%ud", (ctx->addr >> n) & 0xff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1905 *p = (u_char) (d - &p[1]);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1906 p = d;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1907 }
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 /* query type "PTR", IP query class */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1910 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
1911
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1912 rn->qlen = (u_short)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1913 (p + sizeof("\7in-addr\4arpa") + sizeof(ngx_resolver_qs_t)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1914 - rn->query);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1915
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1916 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1917 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1918
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 static ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1921 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
1922 u_char *last)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1923 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1924 char *err;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1925 u_char *p, *dst;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1926 ssize_t len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1927 ngx_uint_t i, n;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1928
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1929 p = src;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1930 len = -1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1931
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1932 /*
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1933 * compression pointers allow to create endless loop, so we set limit;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1934 * 128 pointers should be enough to store 255-byte name
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1935 */
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 for (i = 0; i < 128; i++) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1938 n = *p++;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1939
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1940 if (n == 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1941 goto done;
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 & 0xc0) {
420
ad0a34a8efa6 nginx 0.7.22
Igor Sysoev <http://sysoev.ru>
parents: 416
diff changeset
1945 n = ((n & 0x3f) << 8) + *p;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1946 p = &buf[n];
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 } else {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1949 len += 1 + n;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1950 p = &p[n];
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1953 if (p >= last) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1954 err = "name is out of response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1955 goto invalid;
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 }
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 err = "compression pointers loop";
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 invalid:
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 ngx_log_error(r->log_level, r->log, 0, err);
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 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1966
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1967 done:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1968
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1969 if (name == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1970 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1971 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1972
542
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
1973 if (len == -1) {
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
1974 name->len = 0;
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
1975 name->data = NULL;
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
1976 return NGX_OK;
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
1977 }
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
1978
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1979 dst = ngx_resolver_alloc(r, len);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1980 if (dst == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1981 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1982 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1983
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1984 name->data = dst;
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 n = *src++;
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 for ( ;; ) {
648
f200748c0ac8 nginx 1.1.8
Igor Sysoev <http://sysoev.ru>
parents: 646
diff changeset
1989 if (n & 0xc0) {
f200748c0ac8 nginx 1.1.8
Igor Sysoev <http://sysoev.ru>
parents: 646
diff changeset
1990 n = ((n & 0x3f) << 8) + *src;
f200748c0ac8 nginx 1.1.8
Igor Sysoev <http://sysoev.ru>
parents: 646
diff changeset
1991 src = &buf[n];
f200748c0ac8 nginx 1.1.8
Igor Sysoev <http://sysoev.ru>
parents: 646
diff changeset
1992
f200748c0ac8 nginx 1.1.8
Igor Sysoev <http://sysoev.ru>
parents: 646
diff changeset
1993 n = *src++;
f200748c0ac8 nginx 1.1.8
Igor Sysoev <http://sysoev.ru>
parents: 646
diff changeset
1994
f200748c0ac8 nginx 1.1.8
Igor Sysoev <http://sysoev.ru>
parents: 646
diff changeset
1995 } else {
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1996 ngx_memcpy(dst, src, n);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1997 dst += n;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1998 src += n;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1999
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2000 n = *src++;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2001
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2002 if (n != 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2003 *dst++ = '.';
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2007 if (n == 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2008 name->len = dst - name->data;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2009 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2010 }
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 }
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2015 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2016 ngx_resolver_timeout_handler(ngx_event_t *ev)
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 ngx_resolver_ctx_t *ctx;
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 ctx = ev->data;
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 ctx->state = NGX_RESOLVE_TIMEDOUT;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2023
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2024 ctx->handler(ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2025 }
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2028 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2029 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
2030 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2031 /* lock alloc mutex */
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 if (rn->query) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2034 ngx_resolver_free_locked(r, rn->query);
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2037 if (rn->name) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2038 ngx_resolver_free_locked(r, rn->name);
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2041 if (rn->cnlen) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2042 ngx_resolver_free_locked(r, rn->u.cname);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2043 }
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 if (rn->naddrs > 1) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2046 ngx_resolver_free_locked(r, rn->u.addrs);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2047 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2048
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2049 ngx_resolver_free_locked(r, rn);
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 /* unlock alloc mutex */
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
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 static void *
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2056 ngx_resolver_alloc(ngx_resolver_t *r, size_t size)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2057 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2058 u_char *p;
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 /* lock alloc mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2061
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2062 p = ngx_alloc(size, r->log);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2063
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2064 /* unlock alloc mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2065
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2066 return p;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2069
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
2070 static void *
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2071 ngx_resolver_calloc(ngx_resolver_t *r, size_t size)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2072 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2073 u_char *p;
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 p = ngx_resolver_alloc(r, size);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2076
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2077 if (p) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2078 ngx_memzero(p, size);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2079 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2080
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2081 return p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2082 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2083
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2084
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2085 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2086 ngx_resolver_free(ngx_resolver_t *r, void *p)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2087 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2088 /* lock alloc mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2089
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2090 ngx_free(p);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2091
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2092 /* unlock alloc mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2093 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2094
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2095
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2096 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2097 ngx_resolver_free_locked(ngx_resolver_t *r, void *p)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2098 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2099 ngx_free(p);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2100 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2101
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2102
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2103 static void *
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2104 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
2105 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2106 void *dst;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2107
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2108 dst = ngx_resolver_alloc(r, size);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2109
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2110 if (dst == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2111 return dst;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2112 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2113
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2114 ngx_memcpy(dst, src, size);
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 return dst;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2117 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2118
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2119
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2120 char *
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2121 ngx_resolver_strerror(ngx_int_t err)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2122 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2123 static char *errors[] = {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2124 "Format error", /* FORMERR */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2125 "Server failure", /* SERVFAIL */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2126 "Host not found", /* NXDOMAIN */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2127 "Unimplemented", /* NOTIMP */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2128 "Operation refused" /* REFUSED */
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2131 if (err > 0 && err < 6) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2132 return errors[err - 1];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2133 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2134
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2135 if (err == NGX_RESOLVE_TIMEDOUT) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2136 return "Operation timed out";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2137 }
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 return "Unknown error";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2140 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2141
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2142
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2143 static u_char *
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2144 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
2145 {
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2146 u_char *p;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2147 ngx_udp_connection_t *uc;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2148
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2149 p = buf;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2150
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2151 if (log->action) {
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2152 p = ngx_snprintf(buf, len, " while %s", log->action);
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2153 len -= p - buf;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2154 }
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2155
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2156 uc = log->data;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2157
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2158 if (uc) {
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2159 p = ngx_snprintf(p, len, ", resolver: %V", &uc->server);
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2160 }
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2161
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2162 return p;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2163 }
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2164
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2165
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2166 ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2167 ngx_udp_connect(ngx_udp_connection_t *uc)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2168 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2169 int rc;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2170 ngx_int_t event;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2171 ngx_event_t *rev, *wev;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2172 ngx_socket_t s;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2173 ngx_connection_t *c;
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 s = ngx_socket(AF_INET, SOCK_DGRAM, 0);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2176
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2177 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
2178
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2179 if (s == -1) {
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2180 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
2181 ngx_socket_n " failed");
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2182 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2183 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2184
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2185 c = ngx_get_connection(s, &uc->log);
350
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 if (c == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2188 if (ngx_close_socket(s) == -1) {
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2189 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
2190 ngx_close_socket_n "failed");
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
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 if (ngx_nonblocking(s) == -1) {
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2197 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
2198 ngx_nonblocking_n " failed");
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2199
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2200 ngx_free_connection(c);
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 if (ngx_close_socket(s) == -1) {
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2203 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
2204 ngx_close_socket_n " failed");
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2205 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2206
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2207 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2208 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2209
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2210 rev = c->read;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2211 wev = c->write;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2212
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2213 rev->log = &uc->log;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2214 wev->log = &uc->log;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2215
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2216 uc->connection = c;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2217
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2218 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2219
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2220 #if (NGX_THREADS)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2221
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2222 /* TODO: lock event when call completion handler */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2223
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2224 rev->lock = &c->lock;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2225 wev->lock = &c->lock;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2226 rev->own_lock = &c->lock;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2227 wev->own_lock = &c->lock;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2228
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2229 #endif
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2230
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2231 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, &uc->log, 0,
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2232 "connect to %V, fd:%d #%d", &uc->server, s, c->number);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2233
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2234 rc = connect(s, uc->sockaddr, uc->socklen);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2235
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2236 /* TODO: aio, iocp */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2237
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2238 if (rc == -1) {
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2239 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
2240 "connect() failed");
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2241
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2242 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2243 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2244
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2245 /* UDP sockets are always ready to write */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2246 wev->ready = 1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2247
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2248 if (ngx_add_event) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2249
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2250 event = (ngx_event_flags & NGX_USE_CLEAR_EVENT) ?
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2251 /* kqueue, epoll */ NGX_CLEAR_EVENT:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2252 /* select, poll, /dev/poll */ NGX_LEVEL_EVENT;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2253 /* eventport event type has no meaning: oneshot only */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2254
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2255 if (ngx_add_event(rev, NGX_READ_EVENT, event) != NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2256 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2257 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2258
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2259 } else {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2260 /* rtsig */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2261
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2262 if (ngx_add_conn(c) == NGX_ERROR) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2263 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2264 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2265 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2266
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2267 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2268 }