annotate src/core/ngx_resolver.c @ 674:4dcaf40cc702 NGINX_1_3_0

nginx 1.3.0 *) Feature: the "debug_connection" directive now supports IPv6 addresses and the "unix:" parameter. *) Feature: the "set_real_ip_from" directive and the "proxy" parameter of the "geo" directive now support IPv6 addresses. *) Feature: the "real_ip_recursive", "geoip_proxy", and "geoip_proxy_recursive" directives. *) Feature: the "proxy_recursive" parameter of the "geo" directive. *) Bugfix: a segmentation fault might occur in a worker process if the "resolver" directive was used. *) Bugfix: a segmentation fault might occur in a worker process if the "fastcgi_pass", "scgi_pass", or "uwsgi_pass" directives were used and backend returned incorrect response. *) Bugfix: a segmentation fault might occur in a worker process if the "rewrite" directive was used and new request arguments in a replacement used variables. *) Bugfix: nginx might hog CPU if the open file resource limit was reached. *) Bugfix: nginx might loop infinitely over backends if the "proxy_next_upstream" directive with the "http_404" parameter was used and there were backup servers specified in an upstream block. *) Bugfix: adding the "down" parameter of the "server" directive might cause unneeded client redistribution among backend servers if the "ip_hash" directive was used. *) Bugfix: socket leak. Thanks to Yichun Zhang. *) Bugfix: in the ngx_http_fastcgi_module.
author Igor Sysoev <http://sysoev.ru>
date Tue, 15 May 2012 00:00:00 +0400
parents 9fbf3ad94cbf
children bfa81a0490a2
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 * Copyright (C) Nginx, Inc.
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5 */
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7
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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10 #include <ngx_event.h>
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13 #define NGX_RESOLVER_UDP_SIZE 4096
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16 typedef struct {
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17 u_char ident_hi;
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18 u_char ident_lo;
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19 u_char flags_hi;
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20 u_char flags_lo;
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21 u_char nqs_hi;
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22 u_char nqs_lo;
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23 u_char nan_hi;
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24 u_char nan_lo;
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25 u_char nns_hi;
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26 u_char nns_lo;
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27 u_char nar_hi;
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28 u_char nar_lo;
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29 } ngx_resolver_query_t;
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32 typedef struct {
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33 u_char type_hi;
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34 u_char type_lo;
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35 u_char class_hi;
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36 u_char class_lo;
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37 } ngx_resolver_qs_t;
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40 typedef struct {
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41 u_char type_hi;
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42 u_char type_lo;
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43 u_char class_hi;
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44 u_char class_lo;
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45 u_char ttl[4];
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46 u_char len_hi;
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47 u_char len_lo;
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48 } ngx_resolver_an_t;
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51 ngx_int_t ngx_udp_connect(ngx_udp_connection_t *uc);
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54 static void ngx_resolver_cleanup(void *data);
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55 static void ngx_resolver_cleanup_tree(ngx_resolver_t *r, ngx_rbtree_t *tree);
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56 static ngx_int_t ngx_resolve_name_locked(ngx_resolver_t *r,
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57 ngx_resolver_ctx_t *ctx);
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58 static void ngx_resolver_expire(ngx_resolver_t *r, ngx_rbtree_t *tree,
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59 ngx_queue_t *queue);
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60 static ngx_int_t ngx_resolver_send_query(ngx_resolver_t *r,
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61 ngx_resolver_node_t *rn);
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62 static ngx_int_t ngx_resolver_create_name_query(ngx_resolver_node_t *rn,
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63 ngx_resolver_ctx_t *ctx);
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64 static ngx_int_t ngx_resolver_create_addr_query(ngx_resolver_node_t *rn,
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65 ngx_resolver_ctx_t *ctx);
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66 static void ngx_resolver_resend_handler(ngx_event_t *ev);
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67 static time_t ngx_resolver_resend(ngx_resolver_t *r, ngx_rbtree_t *tree,
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68 ngx_queue_t *queue);
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69 static void ngx_resolver_read_response(ngx_event_t *rev);
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70 static void ngx_resolver_process_response(ngx_resolver_t *r, u_char *buf,
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71 size_t n);
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72 static void ngx_resolver_process_a(ngx_resolver_t *r, u_char *buf, size_t n,
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73 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan, ngx_uint_t ans);
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74 static void ngx_resolver_process_ptr(ngx_resolver_t *r, u_char *buf, size_t n,
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75 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan);
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76 static ngx_resolver_node_t *ngx_resolver_lookup_name(ngx_resolver_t *r,
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77 ngx_str_t *name, uint32_t hash);
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78 static ngx_resolver_node_t *ngx_resolver_lookup_addr(ngx_resolver_t *r,
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79 in_addr_t addr);
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80 static void ngx_resolver_rbtree_insert_value(ngx_rbtree_node_t *temp,
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81 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel);
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82 static ngx_int_t ngx_resolver_copy(ngx_resolver_t *r, ngx_str_t *name,
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83 u_char *buf, u_char *src, u_char *last);
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84 static void ngx_resolver_timeout_handler(ngx_event_t *ev);
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85 static void ngx_resolver_free_node(ngx_resolver_t *r, ngx_resolver_node_t *rn);
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86 static void *ngx_resolver_alloc(ngx_resolver_t *r, size_t size);
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87 static void *ngx_resolver_calloc(ngx_resolver_t *r, size_t size);
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88 static void ngx_resolver_free(ngx_resolver_t *r, void *p);
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89 static void ngx_resolver_free_locked(ngx_resolver_t *r, void *p);
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90 static void *ngx_resolver_dup(ngx_resolver_t *r, void *src, size_t size);
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91 static u_char *ngx_resolver_log_error(ngx_log_t *log, u_char *buf, size_t len);
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93
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94 ngx_resolver_t *
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95 ngx_resolver_create(ngx_conf_t *cf, ngx_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,
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
136 ngx_rbtree_insert_value);
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
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;
354
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
192 }
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
193
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
194 return r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
195 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
196
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
197
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
198 static void
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
199 ngx_resolver_cleanup(void *data)
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
200 {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
201 ngx_resolver_t *r = data;
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
202
646
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
203 ngx_uint_t i;
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
204 ngx_udp_connection_t *uc;
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
205
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
206 if (r) {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
207 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
208 "cleanup resolver");
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
209
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
210 ngx_resolver_cleanup_tree(r, &r->name_rbtree);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
211
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
212 ngx_resolver_cleanup_tree(r, &r->addr_rbtree);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
213
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
214 if (r->event) {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
215 ngx_free(r->event);
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
646
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
218
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
219 uc = r->udp_connections.elts;
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
220
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
221 for (i = 0; i < r->udp_connections.nelts; i++) {
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
222 if (uc[i].connection) {
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
223 ngx_close_connection(uc[i].connection);
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
224 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
225 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
226
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
227 ngx_free(r);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
228 }
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 static void
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
233 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
234 {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
235 ngx_resolver_ctx_t *ctx, *next;
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
236 ngx_resolver_node_t *rn;
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
237
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
238 while (tree->root != tree->sentinel) {
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 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
241
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
242 ngx_queue_remove(&rn->queue);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
243
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
244 for (ctx = rn->waiting; ctx; ctx = next) {
376
edf1cb6c328e nginx 0.7.0
Igor Sysoev <http://sysoev.ru>
parents: 372
diff changeset
245 next = ctx->next;
366
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 if (ctx->event) {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
248 ngx_resolver_free(r, ctx->event);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
249 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
250
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
251 ngx_resolver_free(r, ctx);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
252 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
253
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
254 ngx_rbtree_delete(tree, &rn->node);
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_node(r, rn);
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
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
260
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
261 ngx_resolver_ctx_t *
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
262 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
263 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
264 in_addr_t addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
265 ngx_resolver_ctx_t *ctx;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
266
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
267 if (temp) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
268 addr = ngx_inet_addr(temp->name.data, temp->name.len);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
269
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
270 if (addr != INADDR_NONE) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
271 temp->resolver = r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
272 temp->state = NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
273 temp->naddrs = 1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
274 temp->addrs = &temp->addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
275 temp->addr = addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
276 temp->quick = 1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
277
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
278 return temp;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
279 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
280 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
281
646
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
282 if (r->udp_connections.nelts == 0) {
354
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
283 return NGX_NO_RESOLVER;
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
284 }
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
285
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
286 ctx = ngx_resolver_calloc(r, sizeof(ngx_resolver_ctx_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
287
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
288 if (ctx) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
289 ctx->resolver = r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
290 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
291
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
292 return ctx;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
293 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
294
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
295
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
296 ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
297 ngx_resolve_name(ngx_resolver_ctx_t *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 ngx_int_t rc;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
300 ngx_resolver_t *r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
301
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
302 r = ctx->resolver;
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_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
305 "resolve: \"%V\"", &ctx->name);
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 if (ctx->quick) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
308 ctx->handler(ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
309 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
310 }
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 /* lock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
313
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
314 rc = ngx_resolve_name_locked(r, ctx);
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 if (rc == NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
317 return NGX_OK;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
320 /* unlock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
321
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
322 if (rc == NGX_AGAIN) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
323 return NGX_OK;
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
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
326 /* NGX_ERROR */
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
327
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
328 if (ctx->event) {
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
329 ngx_resolver_free(r, ctx->event);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
330 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
331
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
332 ngx_resolver_free(r, ctx);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
333
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
334 return NGX_ERROR;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
337
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
338 void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
339 ngx_resolve_name_done(ngx_resolver_ctx_t *ctx)
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 uint32_t hash;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
342 ngx_resolver_t *r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
343 ngx_resolver_ctx_t *w, **p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
344 ngx_resolver_node_t *rn;
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 r = ctx->resolver;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
347
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
348 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
349 "resolve name done: %i", ctx->state);
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 if (ctx->quick) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
352 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
353 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
354
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
355 if (ctx->event && ctx->event->timer_set) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
356 ngx_del_timer(ctx->event);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
357 }
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 /* lock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
360
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
361 if (ctx->state == NGX_AGAIN || ctx->state == NGX_RESOLVE_TIMEDOUT) {
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 hash = ngx_crc32_short(ctx->name.data, ctx->name.len);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
364
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
365 rn = ngx_resolver_lookup_name(r, &ctx->name, hash);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
366
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
367 if (rn) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
368 p = &rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
369 w = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
370
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
371 while (w) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
372 if (w == ctx) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
373 *p = w->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
374
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
375 goto done;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
376 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
377
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 w = w->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
380 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
381 }
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 ngx_log_error(NGX_LOG_ALERT, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
384 "could not cancel %V resolving", &ctx->name);
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 done:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
388
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
389 ngx_resolver_expire(r, &r->name_rbtree, &r->name_expire_queue);
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 /* unlock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
392
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
393 /* lock alloc mutex */
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
394
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
395 if (ctx->event) {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
396 ngx_resolver_free_locked(r, ctx->event);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
397 }
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
398
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
399 ngx_resolver_free_locked(r, ctx);
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
400
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
401 /* unlock alloc mutex */
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
402 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
403
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
404
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
405 /* NGX_RESOLVE_A only */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
406
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
407 static ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
408 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
409 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
410 uint32_t hash;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
411 in_addr_t addr, *addrs;
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
412 ngx_int_t rc;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
413 ngx_uint_t naddrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
414 ngx_resolver_ctx_t *next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
415 ngx_resolver_node_t *rn;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
416
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
417 hash = ngx_crc32_short(ctx->name.data, ctx->name.len);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
418
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
419 rn = ngx_resolver_lookup_name(r, &ctx->name, hash);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
420
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
421 if (rn) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
422
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
423 if (rn->valid >= ngx_time()) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
424
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
425 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
426
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
427 ngx_queue_remove(&rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
428
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
429 rn->expire = ngx_time() + r->expire;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
430
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
431 ngx_queue_insert_head(&r->name_expire_queue, &rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
432
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
433 naddrs = rn->naddrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
434
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
435 if (naddrs) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
436
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
437 /* NGX_RESOLVE_A answer */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
438
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
439 if (naddrs != 1) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
440 addr = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
441 addrs = ngx_resolver_dup(r, rn->u.addrs,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
442 naddrs * sizeof(in_addr_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
443 if (addrs == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
444 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
445 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
446
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
447 } else {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
448 addr = rn->u.addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
449 addrs = NULL;
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 ctx->next = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
453 rn->waiting = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
454
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
455 /* unlock name mutex */
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 do {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
458 ctx->state = NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
459 ctx->naddrs = naddrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
460 ctx->addrs = (naddrs == 1) ? &ctx->addr : addrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
461 ctx->addr = addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
462 next = ctx->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
463
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
464 ctx->handler(ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
465
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
466 ctx = next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
467 } while (ctx);
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 if (addrs) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
470 ngx_resolver_free(r, addrs);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
471 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
472
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
473 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
474 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
475
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
476 /* NGX_RESOLVE_CNAME */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
477
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
478 if (ctx->recursion++ < NGX_RESOLVER_MAX_RECURSION) {
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
479
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
480 ctx->name.len = rn->cnlen;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
481 ctx->name.data = rn->u.cname;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
482
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
483 return ngx_resolve_name_locked(r, ctx);
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
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
486 ctx->next = rn->waiting;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
487 rn->waiting = NULL;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
488
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
489 /* unlock name mutex */
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 do {
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
492 ctx->state = NGX_RESOLVE_NXDOMAIN;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
493 next = ctx->next;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
494
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
495 ctx->handler(ctx);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
496
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
497 ctx = next;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
498 } while (ctx);
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 return NGX_OK;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
501 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
502
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
503 if (rn->waiting) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
504
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
505 ctx->next = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
506 rn->waiting = ctx;
542
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
507 ctx->state = NGX_AGAIN;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
508
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
509 return NGX_AGAIN;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
510 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
511
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
512 ngx_queue_remove(&rn->queue);
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 /* lock alloc mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
515
674
4dcaf40cc702 nginx 1.3.0
Igor Sysoev <http://sysoev.ru>
parents: 668
diff changeset
516 if (rn->query) {
4dcaf40cc702 nginx 1.3.0
Igor Sysoev <http://sysoev.ru>
parents: 668
diff changeset
517 ngx_resolver_free_locked(r, rn->query);
4dcaf40cc702 nginx 1.3.0
Igor Sysoev <http://sysoev.ru>
parents: 668
diff changeset
518 rn->query = NULL;
4dcaf40cc702 nginx 1.3.0
Igor Sysoev <http://sysoev.ru>
parents: 668
diff changeset
519 }
350
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 if (rn->cnlen) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
522 ngx_resolver_free_locked(r, rn->u.cname);
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
525 if (rn->naddrs > 1) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
526 ngx_resolver_free_locked(r, rn->u.addrs);
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
529 /* unlock alloc mutex */
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 } else {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
532
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
533 rn = ngx_resolver_alloc(r, sizeof(ngx_resolver_node_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
534 if (rn == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
535 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
536 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
537
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
538 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
539 if (rn->name == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
540 ngx_resolver_free(r, rn);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
541 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
542 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
543
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
544 rn->node.key = hash;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
545 rn->nlen = (u_short) ctx->name.len;
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
546 rn->query = NULL;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
547
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
548 ngx_rbtree_insert(&r->name_rbtree, &rn->node);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
549 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
550
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
551 rc = ngx_resolver_create_name_query(rn, ctx);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
552
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
553 if (rc == NGX_ERROR) {
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
554 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
555 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
556
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
557 if (rc == NGX_DECLINED) {
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
558 ngx_rbtree_delete(&r->name_rbtree, &rn->node);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
559
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
560 ngx_resolver_free(r, rn->query);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
561 ngx_resolver_free(r, rn->name);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
562 ngx_resolver_free(r, rn);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
563
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
564 ctx->state = NGX_RESOLVE_NXDOMAIN;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
565 ctx->handler(ctx);
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 return NGX_OK;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
568 }
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
569
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
570 if (ngx_resolver_send_query(r, rn) != NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
571 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
572 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
573
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
574 if (ctx->event == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
575 ctx->event = ngx_resolver_calloc(r, sizeof(ngx_event_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
576 if (ctx->event == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
577 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
578 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
579
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
580 ctx->event->handler = ngx_resolver_timeout_handler;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
581 ctx->event->data = ctx;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
582 ctx->event->log = r->log;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
583 ctx->ident = -1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
584
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
585 ngx_add_timer(ctx->event, ctx->timeout);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
586 }
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 if (ngx_queue_empty(&r->name_resend_queue)) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
589 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
590 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
591
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
592 rn->expire = ngx_time() + r->resend_timeout;
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 ngx_queue_insert_head(&r->name_resend_queue, &rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
595
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
596 rn->cnlen = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
597 rn->naddrs = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
598 rn->valid = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
599 rn->waiting = ctx;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
600
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
601 ctx->state = NGX_AGAIN;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
602
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
603 return NGX_AGAIN;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
604
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
605 failed:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
606
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
607 ngx_rbtree_delete(&r->name_rbtree, &rn->node);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
608
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
609 if (rn->query) {
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
610 ngx_resolver_free(r, rn->query);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
611 }
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
612
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
613 ngx_resolver_free(r, rn->name);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
614
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
615 ngx_resolver_free(r, rn);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
616
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
617 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
618 }
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
621 ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
622 ngx_resolve_addr(ngx_resolver_ctx_t *ctx)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
623 {
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
624 u_char *name;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
625 ngx_resolver_t *r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
626 ngx_resolver_node_t *rn;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
627
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
628 r = ctx->resolver;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
629
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
630 ctx->addr = ntohl(ctx->addr);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
631
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
632 /* lock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
633
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
634 rn = ngx_resolver_lookup_addr(r, ctx->addr);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
635
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
636 if (rn) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
637
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
638 if (rn->valid >= ngx_time()) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
639
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
640 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, "resolve cached");
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
641
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
642 ngx_queue_remove(&rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
643
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
644 rn->expire = ngx_time() + r->expire;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
645
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
646 ngx_queue_insert_head(&r->addr_expire_queue, &rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
647
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
648 name = ngx_resolver_dup(r, rn->name, rn->nlen);
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
649 if (name == NULL) {
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
650 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
651 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
652
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
653 ctx->name.len = rn->nlen;
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
654 ctx->name.data = name;
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
655
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
656 /* unlock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
657
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
658 ctx->state = NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
659
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
660 ctx->handler(ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
661
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
662 ngx_resolver_free(r, name);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
663
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
664 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
665 }
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 if (rn->waiting) {
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 ctx->next = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
670 rn->waiting = ctx;
542
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
671 ctx->state = NGX_AGAIN;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
672
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
673 /* unlock addr mutex */
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
674
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
675 return NGX_OK;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
676 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
677
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
678 ngx_queue_remove(&rn->queue);
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 ngx_resolver_free(r, rn->query);
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
681 rn->query = NULL;
350
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 } else {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
684 rn = ngx_resolver_alloc(r, sizeof(ngx_resolver_node_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
685 if (rn == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
686 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
687 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
688
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
689 rn->node.key = ctx->addr;
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
690 rn->query = NULL;
350
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 ngx_rbtree_insert(&r->addr_rbtree, &rn->node);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
693 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
694
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
695 if (ngx_resolver_create_addr_query(rn, ctx) != NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
696 goto failed;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
699 if (ngx_resolver_send_query(r, rn) != NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
700 goto failed;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
703 ctx->event = ngx_resolver_calloc(r, sizeof(ngx_event_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
704 if (ctx->event == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
705 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
706 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
707
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
708 ctx->event->handler = ngx_resolver_timeout_handler;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
709 ctx->event->data = ctx;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
710 ctx->event->log = r->log;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
711 ctx->ident = -1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
712
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
713 ngx_add_timer(ctx->event, ctx->timeout);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
714
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
715 if (ngx_queue_empty(&r->addr_resend_queue)) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
716 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
717 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
718
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
719 rn->expire = ngx_time() + r->resend_timeout;
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 ngx_queue_insert_head(&r->addr_resend_queue, &rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
722
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
723 rn->cnlen = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
724 rn->naddrs = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
725 rn->name = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
726 rn->nlen = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
727 rn->valid = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
728 rn->waiting = ctx;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
729
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
730 /* unlock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
731
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
732 ctx->state = NGX_AGAIN;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
733
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
734 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
735
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
736 failed:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
737
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
738 if (rn) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
739 ngx_rbtree_delete(&r->addr_rbtree, &rn->node);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
740
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
741 if (rn->query) {
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
742 ngx_resolver_free(r, rn->query);
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
743 }
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
744
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
745 ngx_resolver_free(r, rn);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
746 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
747
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
748 /* unlock addr mutex */
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 if (ctx->event) {
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
751 ngx_resolver_free(r, ctx->event);
350
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
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
754 ngx_resolver_free(r, ctx);
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 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
757 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
758
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
759
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
760 void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
761 ngx_resolve_addr_done(ngx_resolver_ctx_t *ctx)
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 in_addr_t addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
764 ngx_resolver_t *r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
765 ngx_resolver_ctx_t *w, **p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
766 ngx_resolver_node_t *rn;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
767
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
768 r = ctx->resolver;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
769
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
770 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
771 "resolve addr done: %i", ctx->state);
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 if (ctx->event && ctx->event->timer_set) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
774 ngx_del_timer(ctx->event);
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
777 /* lock addr mutex */
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 if (ctx->state == NGX_AGAIN || ctx->state == NGX_RESOLVE_TIMEDOUT) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
780
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
781 rn = ngx_resolver_lookup_addr(r, ctx->addr);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
782
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
783 if (rn) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
784 p = &rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
785 w = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
786
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
787 while (w) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
788 if (w == ctx) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
789 *p = w->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
790
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
791 goto done;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
792 }
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 p = &w->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
795 w = w->next;
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 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
798
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
799 addr = ntohl(ctx->addr);
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 ngx_log_error(NGX_LOG_ALERT, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
802 "could not cancel %ud.%ud.%ud.%ud resolving",
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
803 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
804 (addr >> 8) & 0xff, addr & 0xff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
805 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
806
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
807 done:
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 ngx_resolver_expire(r, &r->addr_rbtree, &r->addr_expire_queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
810
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
811 /* unlock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
812
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
813 /* lock alloc mutex */
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
814
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
815 if (ctx->event) {
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
816 ngx_resolver_free_locked(r, ctx->event);
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
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
819 ngx_resolver_free_locked(r, ctx);
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 /* unlock alloc mutex */
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
822 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
823
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
824
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
825 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
826 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
827 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
828 time_t now;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
829 ngx_uint_t i;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
830 ngx_queue_t *q;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
831 ngx_resolver_node_t *rn;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
832
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
833 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
834
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
835 now = ngx_time();
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
836
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
837 for (i = 0; i < 2; i++) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
838 if (ngx_queue_empty(queue)) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
839 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
840 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
841
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
842 q = ngx_queue_last(queue);
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 rn = ngx_queue_data(q, ngx_resolver_node_t, queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
845
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
846 if (now <= rn->expire) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
847 return;
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
358
9121a0a91f47 nginx 0.6.23
Igor Sysoev <http://sysoev.ru>
parents: 356
diff changeset
850 ngx_log_debug2(NGX_LOG_DEBUG_CORE, r->log, 0,
9121a0a91f47 nginx 0.6.23
Igor Sysoev <http://sysoev.ru>
parents: 356
diff changeset
851 "resolver expire \"%*s\"", (size_t) rn->nlen, rn->name);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
852
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
853 ngx_queue_remove(q);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
854
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
855 ngx_rbtree_delete(tree, &rn->node);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
856
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
857 ngx_resolver_free_node(r, rn);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
858 }
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
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 static ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
863 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
864 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
865 ssize_t n;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
866 ngx_udp_connection_t *uc;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
867
646
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
868 uc = r->udp_connections.elts;
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
869
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
870 uc = &uc[r->last_connection++];
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
871 if (r->last_connection == r->udp_connections.nelts) {
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
872 r->last_connection = 0;
615b5ea36fc0 nginx 1.1.7
Igor Sysoev <http://sysoev.ru>
parents: 622
diff changeset
873 }
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
874
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
875 if (uc->connection == NULL) {
664
f5b859b2f097 nginx 1.1.16
Igor Sysoev <http://sysoev.ru>
parents: 662
diff changeset
876
f5b859b2f097 nginx 1.1.16
Igor Sysoev <http://sysoev.ru>
parents: 662
diff changeset
877 uc->log = *r->log;
f5b859b2f097 nginx 1.1.16
Igor Sysoev <http://sysoev.ru>
parents: 662
diff changeset
878 uc->log.handler = ngx_resolver_log_error;
f5b859b2f097 nginx 1.1.16
Igor Sysoev <http://sysoev.ru>
parents: 662
diff changeset
879 uc->log.data = uc;
f5b859b2f097 nginx 1.1.16
Igor Sysoev <http://sysoev.ru>
parents: 662
diff changeset
880 uc->log.action = "resolving";
f5b859b2f097 nginx 1.1.16
Igor Sysoev <http://sysoev.ru>
parents: 662
diff changeset
881
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
882 if (ngx_udp_connect(uc) != NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
883 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
884 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
885
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
886 uc->connection->data = r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
887 uc->connection->read->handler = ngx_resolver_read_response;
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
888 uc->connection->read->resolver = 1;
350
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
891 n = ngx_send(uc->connection, rn->query, rn->qlen);
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 if (n == -1) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
894 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
895 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
896
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
897 if ((size_t) n != (size_t) rn->qlen) {
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
898 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
899 return NGX_ERROR;
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 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
903 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
904
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
905
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
906 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
907 ngx_resolver_resend_handler(ngx_event_t *ev)
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 time_t timer, atimer, ntimer;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
910 ngx_resolver_t *r;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
911
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
912 r = ev->data;
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 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
915 "resolver resend handler");
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
916
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
917 /* lock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
918
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
919 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
920
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
921 /* unlock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
922
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
923 /* lock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
924
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
925 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
926
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
927 /* unlock addr mutex */
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 if (ntimer == 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
930 timer = atimer;
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 if (atimer == 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
933 timer = 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 } else {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
936 timer = (atimer < ntimer) ? atimer : ntimer;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
937 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
938
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
939 if (timer) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
940 ngx_add_timer(r->event, (ngx_msec_t) (timer * 1000));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
941 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
942 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
943
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 static time_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
946 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
947 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
948 time_t now;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
949 ngx_queue_t *q;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
950 ngx_resolver_node_t *rn;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
951
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
952 now = ngx_time();
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
953
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
954 for ( ;; ) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
955 if (ngx_queue_empty(queue)) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
956 return 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
957 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
958
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
959 q = ngx_queue_last(queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
960
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
961 rn = ngx_queue_data(q, ngx_resolver_node_t, queue);
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 if (now < rn->expire) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
964 return rn->expire - now;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
965 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
966
358
9121a0a91f47 nginx 0.6.23
Igor Sysoev <http://sysoev.ru>
parents: 356
diff changeset
967 ngx_log_debug3(NGX_LOG_DEBUG_CORE, r->log, 0,
9121a0a91f47 nginx 0.6.23
Igor Sysoev <http://sysoev.ru>
parents: 356
diff changeset
968 "resolver resend \"%*s\" %p",
9121a0a91f47 nginx 0.6.23
Igor Sysoev <http://sysoev.ru>
parents: 356
diff changeset
969 (size_t) rn->nlen, rn->name, rn->waiting);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
970
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
971 ngx_queue_remove(q);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
972
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
973 if (rn->waiting) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
974
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
975 if (ngx_resolver_send_query(r, rn) == NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
976
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
977 rn->expire = now + r->resend_timeout;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
978
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
979 ngx_queue_insert_head(queue, &rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
980 }
364
a39aab45a53f nginx 0.6.26
Igor Sysoev <http://sysoev.ru>
parents: 358
diff changeset
981
a39aab45a53f nginx 0.6.26
Igor Sysoev <http://sysoev.ru>
parents: 358
diff changeset
982 continue;
350
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
985 ngx_rbtree_delete(tree, &rn->node);
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 ngx_resolver_free_node(r, rn);
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 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
990
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 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
993 ngx_resolver_read_response(ngx_event_t *rev)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
994 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
995 ssize_t n;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
996 ngx_connection_t *c;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
997 u_char buf[NGX_RESOLVER_UDP_SIZE];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
998
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
999 c = rev->data;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1000
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1001 do {
354
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
1002 n = ngx_udp_recv(c, buf, NGX_RESOLVER_UDP_SIZE);
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
1003
583decdb82a4 nginx 0.6.21
Igor Sysoev <http://sysoev.ru>
parents: 350
diff changeset
1004 if (n < 0) {
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1005 return;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1008 ngx_resolver_process_response(c->data, buf, n);
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 } while (rev->ready);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1011 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1012
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 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1015 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
1016 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1017 char *err;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1018 size_t len;
416
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1019 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
1020 qtype, qclass;
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1021 ngx_queue_t *q;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1022 ngx_resolver_qs_t *qs;
416
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1023 ngx_resolver_node_t *rn;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1024 ngx_resolver_query_t *query;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1025
416
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1026 if ((size_t) n < sizeof(ngx_resolver_query_t)) {
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1027 goto short_response;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1030 query = (ngx_resolver_query_t *) buf;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1031
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1032 ident = (query->ident_hi << 8) + query->ident_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1033 flags = (query->flags_hi << 8) + query->flags_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1034 nqs = (query->nqs_hi << 8) + query->nqs_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1035 nan = (query->nan_hi << 8) + query->nan_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1036
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1037 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
1038 "resolver DNS response %ui fl:%04Xui %ui/%ui/%ui/%ui",
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1039 ident, flags, nqs, nan,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1040 (query->nns_hi << 8) + query->nns_lo,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1041 (query->nar_hi << 8) + query->nar_lo);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1042
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1043 if (!(flags & 0x8000)) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1044 ngx_log_error(r->log_level, r->log, 0,
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1045 "invalid DNS response %ui fl:%04Xui", ident, flags);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1046 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1047 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1048
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1049 code = flags & 0x7f;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1050
416
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1051 if (code == NGX_RESOLVE_FORMERR) {
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1052
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1053 times = 0;
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1054
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1055 for (q = ngx_queue_head(&r->name_resend_queue);
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1056 q != ngx_queue_sentinel(&r->name_resend_queue) || times++ < 100;
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1057 q = ngx_queue_next(q))
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 rn = ngx_queue_data(q, ngx_resolver_node_t, queue);
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1060 qident = (rn->query[0] << 8) + rn->query[1];
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1061
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1062 if (qident == ident) {
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1063 ngx_log_error(r->log_level, r->log, 0,
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1064 "DNS error (%ui: %s), query id:%ui, name:\"%*s\"",
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1065 code, ngx_resolver_strerror(code), ident,
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1066 rn->nlen, rn->name);
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1067 return;
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1068 }
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 goto dns_error;
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1072 }
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1073
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1074 if (code > NGX_RESOLVE_REFUSED) {
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1075 goto dns_error;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1076 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1077
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1078 if (nqs != 1) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1079 err = "invalid number of questions in DNS response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1080 goto done;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1083 i = sizeof(ngx_resolver_query_t);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1084
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1085 while (i < (ngx_uint_t) n) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1086 if (buf[i] == '\0') {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1087 goto found;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1088 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1089
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1090 len = buf[i];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1091 i += 1 + len;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1094 goto short_response;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1095
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1096 found:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1097
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1098 if (i++ == 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1099 err = "zero-length domain name in DNS response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1100 goto done;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1101 }
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 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
1104 > (ngx_uint_t) n)
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 goto short_response;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1109 qs = (ngx_resolver_qs_t *) &buf[i];
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 qtype = (qs->type_hi << 8) + qs->type_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1112 qclass = (qs->class_hi << 8) + qs->class_lo;
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 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
1115 "resolver DNS response qt:%ui cl:%ui", qtype, qclass);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1116
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1117 if (qclass != 1) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1118 ngx_log_error(r->log_level, r->log, 0,
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1119 "unknown query class %ui in DNS response", qclass);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1120 return;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1123 switch (qtype) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1124
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1125 case NGX_RESOLVE_A:
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 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
1128 i + sizeof(ngx_resolver_qs_t));
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1129
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1130 break;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1131
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1132 case NGX_RESOLVE_PTR:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1133
356
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1134 ngx_resolver_process_ptr(r, buf, n, ident, code, nan);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1135
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1136 break;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1137
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1138 default:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1139 ngx_log_error(r->log_level, r->log, 0,
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1140 "unknown query type %ui in DNS response", qtype);
350
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1144 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1145
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1146 short_response:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1147
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1148 err = "short dns response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1149
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1150 done:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1151
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1152 ngx_log_error(r->log_level, r->log, 0, err);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1153
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1154 return;
416
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1155
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1156 dns_error:
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1157
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1158 ngx_log_error(r->log_level, r->log, 0,
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1159 "DNS error (%ui: %s), query id:%ui",
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1160 code, ngx_resolver_strerror(code), ident);
b4f69f2ef02c nginx 0.7.20
Igor Sysoev <http://sysoev.ru>
parents: 376
diff changeset
1161 return;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1162 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1163
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1164
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1165 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1166 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
1167 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
1168 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1169 char *err;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1170 u_char *cname;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1171 size_t len;
650
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1172 int32_t ttl;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1173 uint32_t hash;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1174 in_addr_t addr, *addrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1175 ngx_str_t name;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1176 ngx_uint_t qtype, qident, naddrs, a, i, n, start;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1177 ngx_resolver_an_t *an;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1178 ngx_resolver_ctx_t *ctx, *next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1179 ngx_resolver_node_t *rn;
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 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
1182 return;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1185 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
1186
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1187 hash = ngx_crc32_short(name.data, name.len);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1188
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1189 /* lock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1190
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1191 rn = ngx_resolver_lookup_name(r, &name, hash);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1192
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1193 if (rn == NULL || rn->query == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1194 ngx_log_error(r->log_level, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1195 "unexpected response for %V", &name);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1196 goto failed;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1199 qident = (rn->query[0] << 8) + rn->query[1];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1200
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1201 if (ident != qident) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1202 ngx_log_error(r->log_level, r->log, 0,
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1203 "wrong ident %ui response for %V, expect %ui",
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1204 ident, &name, qident);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1205 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1206 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1207
528
005a70f9573b nginx 0.8.16
Igor Sysoev <http://sysoev.ru>
parents: 484
diff changeset
1208 ngx_resolver_free(r, name.data);
005a70f9573b nginx 0.8.16
Igor Sysoev <http://sysoev.ru>
parents: 484
diff changeset
1209
356
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1210 if (code == 0 && nan == 0) {
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1211 code = 3; /* NXDOMAIN */
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1212 }
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1213
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1214 if (code) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1215 next = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1216 rn->waiting = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1217
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1218 ngx_queue_remove(&rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1219
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1220 ngx_rbtree_delete(&r->name_rbtree, &rn->node);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1221
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1222 ngx_resolver_free_node(r, rn);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1223
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1224 /* unlock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1225
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1226 while (next) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1227 ctx = next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1228 ctx->state = code;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1229 next = ctx->next;
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 ctx->handler(ctx);
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 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1235 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1236
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1237 i = ans;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1238 naddrs = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1239 addr = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1240 addrs = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1241 cname = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1242 qtype = 0;
650
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1243 ttl = 0;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1244
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1245 for (a = 0; a < nan; a++) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1246
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1247 start = i;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1248
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1249 while (i < last) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1250
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1251 if (buf[i] & 0xc0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1252 i += 2;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1253 goto found;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1254 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1255
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1256 if (buf[i] == 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1257 i++;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1258 goto test_length;
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 i += 1 + buf[i];
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1264 goto short_response;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1265
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1266 test_length:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1267
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1268 if (i - start < 2) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1269 err = "invalid name in dns response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1270 goto invalid;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1273 found:
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 if (i + sizeof(ngx_resolver_an_t) >= last) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1276 goto short_response;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1279 an = (ngx_resolver_an_t *) &buf[i];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1280
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1281 qtype = (an->type_hi << 8) + an->type_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1282 len = (an->len_hi << 8) + an->len_lo;
650
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1283 ttl = (an->ttl[0] << 24) + (an->ttl[1] << 16)
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1284 + (an->ttl[2] << 8) + (an->ttl[3]);
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1285
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1286 if (ttl < 0) {
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1287 ttl = 0;
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1288 }
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1289
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1290 if (qtype == NGX_RESOLVE_A) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1291
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1292 i += sizeof(ngx_resolver_an_t);
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 if (i + len > last) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1295 goto short_response;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1296 }
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 addr = htonl((buf[i] << 24) + (buf[i + 1] << 16)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1299 + (buf[i + 2] << 8) + (buf[i + 3]));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1300
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1301 naddrs++;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1302
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1303 i += len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1304
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1305 } else if (qtype == NGX_RESOLVE_CNAME) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1306 cname = &buf[i] + sizeof(ngx_resolver_an_t);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1307 i += sizeof(ngx_resolver_an_t) + len;
372
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 if (qtype == NGX_RESOLVE_DNAME) {
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1310 i += sizeof(ngx_resolver_an_t) + len;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1311
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1312 } else {
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1313 ngx_log_error(r->log_level, r->log, 0,
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1314 "unexpected qtype %ui", qtype);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1315 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1316 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1317
650
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1318 ngx_log_debug3(NGX_LOG_DEBUG_CORE, r->log, 0,
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1319 "resolver naddrs:%ui cname:%p ttl:%d",
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1320 naddrs, cname, ttl);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1321
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1322 if (naddrs) {
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 if (naddrs == 1) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1325 rn->u.addr = addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1326
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1327 } else {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1328
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1329 addrs = ngx_resolver_alloc(r, naddrs * sizeof(in_addr_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1330 if (addrs == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1331 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1332 }
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 n = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1335 i = ans;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1336
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1337 for (a = 0; a < nan; a++) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1338
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1339 for ( ;; ) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1340
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1341 if (buf[i] & 0xc0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1342 i += 2;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1343 goto ok;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1344 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1345
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1346 if (buf[i] == 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1347 i++;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1348 goto ok;
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 i += 1 + buf[i];
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1354 ok:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1355
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1356 an = (ngx_resolver_an_t *) &buf[i];
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 qtype = (an->type_hi << 8) + an->type_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1359 len = (an->len_hi << 8) + an->len_lo;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1360
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1361 i += sizeof(ngx_resolver_an_t);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1362
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1363 if (qtype == NGX_RESOLVE_A) {
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 addrs[n++] = htonl((buf[i] << 24) + (buf[i + 1] << 16)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1366 + (buf[i + 2] << 8) + (buf[i + 3]));
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 if (n == naddrs) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1369 break;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1370 }
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 i += len;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1376 rn->u.addrs = addrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1377
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1378 addrs = ngx_resolver_dup(r, rn->u.addrs,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1379 naddrs * sizeof(in_addr_t));
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1380 if (addrs == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1381 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1382 }
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1385 rn->naddrs = (u_short) naddrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1386
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1387 ngx_queue_remove(&rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1388
650
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1389 rn->valid = ngx_time() + (r->valid ? r->valid : ttl);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1390 rn->expire = ngx_time() + r->expire;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1391
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1392 ngx_queue_insert_head(&r->name_expire_queue, &rn->queue);
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 next = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1395 rn->waiting = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1396
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1397 /* unlock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1398
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1399 while (next) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1400 ctx = next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1401 ctx->state = NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1402 ctx->naddrs = naddrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1403 ctx->addrs = (naddrs == 1) ? &ctx->addr : addrs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1404 ctx->addr = addr;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1405 next = ctx->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1406
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1407 ctx->handler(ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1408 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1409
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1410 if (naddrs > 1) {
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1411 ngx_resolver_free(r, addrs);
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
674
4dcaf40cc702 nginx 1.3.0
Igor Sysoev <http://sysoev.ru>
parents: 668
diff changeset
1414 ngx_resolver_free(r, rn->query);
4dcaf40cc702 nginx 1.3.0
Igor Sysoev <http://sysoev.ru>
parents: 668
diff changeset
1415 rn->query = NULL;
4dcaf40cc702 nginx 1.3.0
Igor Sysoev <http://sysoev.ru>
parents: 668
diff changeset
1416
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1417 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1418
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1419 } else if (cname) {
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 /* CNAME only */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1422
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1423 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
1424 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1425 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1426
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1427 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1428 "resolver cname:\"%V\"", &name);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1429
356
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1430 ngx_queue_remove(&rn->queue);
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1431
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1432 rn->cnlen = (u_short) name.len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1433 rn->u.cname = name.data;
650
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1434
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1435 rn->valid = ngx_time() + (r->valid ? r->valid : ttl);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1436 rn->expire = ngx_time() + r->expire;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1437
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1438 ngx_queue_insert_head(&r->name_expire_queue, &rn->queue);
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 ctx = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1441 rn->waiting = NULL;
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 if (ctx) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1444 ctx->name = name;
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 (void) ngx_resolve_name_locked(r, ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1447 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1448
674
4dcaf40cc702 nginx 1.3.0
Igor Sysoev <http://sysoev.ru>
parents: 668
diff changeset
1449 ngx_resolver_free(r, rn->query);
4dcaf40cc702 nginx 1.3.0
Igor Sysoev <http://sysoev.ru>
parents: 668
diff changeset
1450 rn->query = NULL;
4dcaf40cc702 nginx 1.3.0
Igor Sysoev <http://sysoev.ru>
parents: 668
diff changeset
1451
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1452 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1453 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1454
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1455 ngx_log_error(r->log_level, r->log, 0,
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1456 "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
1457 qtype);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1458 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1459
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1460 short_response:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1461
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1462 err = "short dns response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1463
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1464 invalid:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1465
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1466 /* unlock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1467
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1468 ngx_log_error(r->log_level, r->log, 0, err);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1469
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1470 return;
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 failed:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1473
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1474 /* unlock name mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1475
528
005a70f9573b nginx 0.8.16
Igor Sysoev <http://sysoev.ru>
parents: 484
diff changeset
1476 ngx_resolver_free(r, name.data);
005a70f9573b nginx 0.8.16
Igor Sysoev <http://sysoev.ru>
parents: 484
diff changeset
1477
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1478 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1479 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1480
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1481
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1482 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1483 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
1484 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
1485 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1486 char *err;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1487 size_t len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1488 in_addr_t addr;
650
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1489 int32_t ttl;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1490 ngx_int_t digit;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1491 ngx_str_t name;
622
8dc007eddbcf nginx 1.0.1
Igor Sysoev <http://sysoev.ru>
parents: 598
diff changeset
1492 ngx_uint_t i, mask, qident;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1493 ngx_resolver_an_t *an;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1494 ngx_resolver_ctx_t *ctx, *next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1495 ngx_resolver_node_t *rn;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1496
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1497 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
1498 goto invalid_in_addr_arpa;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1499 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1500
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1501 addr = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1502 i = 12;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1503
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1504 for (mask = 0; mask < 32; mask += 8) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1505 len = buf[i++];
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 digit = ngx_atoi(&buf[i], len);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1508 if (digit == NGX_ERROR || digit > 255) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1509 goto invalid_in_addr_arpa;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1510 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1511
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1512 addr += digit << mask;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1513 i += len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1514 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1515
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1516 if (ngx_strcmp(&buf[i], "\7in-addr\4arpa") != 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1517 goto invalid_in_addr_arpa;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1518 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1519
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1520 /* lock addr mutex */
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 rn = ngx_resolver_lookup_addr(r, addr);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1523
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1524 if (rn == NULL || rn->query == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1525 ngx_log_error(r->log_level, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1526 "unexpected response for %ud.%ud.%ud.%ud",
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1527 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1528 (addr >> 8) & 0xff, addr & 0xff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1529 goto failed;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1530 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1531
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1532 qident = (rn->query[0] << 8) + rn->query[1];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1533
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1534 if (ident != qident) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1535 ngx_log_error(r->log_level, r->log, 0,
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1536 "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
1537 ident, (addr >> 24) & 0xff, (addr >> 16) & 0xff,
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1538 (addr >> 8) & 0xff, addr & 0xff, qident);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1539 goto failed;
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
356
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1542 if (code == 0 && nan == 0) {
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1543 code = 3; /* NXDOMAIN */
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1544 }
b743d290eb3b nginx 0.6.22
Igor Sysoev <http://sysoev.ru>
parents: 354
diff changeset
1545
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1546 if (code) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1547 next = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1548 rn->waiting = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1549
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1550 ngx_queue_remove(&rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1551
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1552 ngx_rbtree_delete(&r->addr_rbtree, &rn->node);
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 ngx_resolver_free_node(r, rn);
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 /* unlock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1557
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1558 while (next) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1559 ctx = next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1560 ctx->state = code;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1561 next = ctx->next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1562
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1563 ctx->handler(ctx);
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 return;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1569 i += sizeof("\7in-addr\4arpa") + sizeof(ngx_resolver_qs_t);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1570
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1571 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
1572 goto short_response;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1573 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1574
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1575 /* compression pointer to "XX.XX.XX.XX.in-addr.arpa */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1576
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1577 if (buf[i] != 0xc0 || buf[i + 1] != 0x0c) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1578 err = "invalid in-addr.arpa name in DNS response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1579 goto invalid;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1580 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1581
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1582 an = (ngx_resolver_an_t *) &buf[i + 2];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1583
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1584 len = (an->len_hi << 8) + an->len_lo;
650
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1585 ttl = (an->ttl[0] << 24) + (an->ttl[1] << 16)
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1586 + (an->ttl[2] << 8) + (an->ttl[3]);
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1587
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1588 if (ttl < 0) {
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1589 ttl = 0;
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1590 }
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1591
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1592 ngx_log_debug3(NGX_LOG_DEBUG_CORE, r->log, 0,
622
8dc007eddbcf nginx 1.0.1
Igor Sysoev <http://sysoev.ru>
parents: 598
diff changeset
1593 "resolver qt:%ui cl:%ui len:%uz",
8dc007eddbcf nginx 1.0.1
Igor Sysoev <http://sysoev.ru>
parents: 598
diff changeset
1594 (an->type_hi << 8) + an->type_lo,
8dc007eddbcf nginx 1.0.1
Igor Sysoev <http://sysoev.ru>
parents: 598
diff changeset
1595 (an->class_hi << 8) + an->class_lo, len);
350
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 i += 2 + sizeof(ngx_resolver_an_t);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1598
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1599 if (i + len > (ngx_uint_t) n) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1600 goto short_response;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1601 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1602
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1603 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
1604 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1605 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1606
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1607 ngx_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
1608
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1609 if (name.len != (size_t) rn->nlen
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1610 || ngx_strncmp(name.data, rn->name, name.len) != 0)
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1611 {
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1612 if (rn->nlen) {
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1613 ngx_resolver_free(r, rn->name);
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1614 }
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1615
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1616 rn->nlen = (u_short) name.len;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1617 rn->name = name.data;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1618
442
670af56a1158 nginx 0.7.33
Igor Sysoev <http://sysoev.ru>
parents: 420
diff changeset
1619 name.data = ngx_resolver_dup(r, rn->name, name.len);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1620 if (name.data == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1621 goto failed;
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 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1624
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1625 ngx_queue_remove(&rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1626
650
4d05413aebad nginx 1.1.9
Igor Sysoev <http://sysoev.ru>
parents: 648
diff changeset
1627 rn->valid = ngx_time() + (r->valid ? r->valid : ttl);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1628 rn->expire = ngx_time() + r->expire;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1629
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1630 ngx_queue_insert_head(&r->addr_expire_queue, &rn->queue);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1631
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1632 next = rn->waiting;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1633 rn->waiting = NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1634
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1635 /* unlock addr mutex */
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 while (next) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1638 ctx = next;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1639 ctx->state = NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1640 ctx->name = name;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1641 next = ctx->next;
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 ctx->handler(ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1644 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1645
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1646 ngx_resolver_free(r, name.data);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1647
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1648 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1649
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1650 invalid_in_addr_arpa:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1651
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1652 ngx_log_error(r->log_level, r->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1653 "invalid in-addr.arpa name in DNS response");
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1654 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1655
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1656 short_response:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1657
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1658 err = "short DNS response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1659
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1660 invalid:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1661
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1662 /* unlock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1663
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1664 ngx_log_error(r->log_level, r->log, 0, err);
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 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1667
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1668 failed:
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 /* unlock addr mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1671
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1672 return;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1673 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1674
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1675
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1676 static ngx_resolver_node_t *
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1677 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
1678 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1679 ngx_int_t rc;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1680 ngx_rbtree_node_t *node, *sentinel;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1681 ngx_resolver_node_t *rn;
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 node = r->name_rbtree.root;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1684 sentinel = r->name_rbtree.sentinel;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1685
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1686 while (node != sentinel) {
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 if (hash < node->key) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1689 node = node->left;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1690 continue;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1691 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1692
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1693 if (hash > node->key) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1694 node = node->right;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1695 continue;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1696 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1697
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1698 /* hash == node->key */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1699
664
f5b859b2f097 nginx 1.1.16
Igor Sysoev <http://sysoev.ru>
parents: 662
diff changeset
1700 rn = (ngx_resolver_node_t *) node;
f5b859b2f097 nginx 1.1.16
Igor Sysoev <http://sysoev.ru>
parents: 662
diff changeset
1701
f5b859b2f097 nginx 1.1.16
Igor Sysoev <http://sysoev.ru>
parents: 662
diff changeset
1702 rc = ngx_memn2cmp(name->data, rn->name, name->len, rn->nlen);
f5b859b2f097 nginx 1.1.16
Igor Sysoev <http://sysoev.ru>
parents: 662
diff changeset
1703
f5b859b2f097 nginx 1.1.16
Igor Sysoev <http://sysoev.ru>
parents: 662
diff changeset
1704 if (rc == 0) {
f5b859b2f097 nginx 1.1.16
Igor Sysoev <http://sysoev.ru>
parents: 662
diff changeset
1705 return rn;
f5b859b2f097 nginx 1.1.16
Igor Sysoev <http://sysoev.ru>
parents: 662
diff changeset
1706 }
f5b859b2f097 nginx 1.1.16
Igor Sysoev <http://sysoev.ru>
parents: 662
diff changeset
1707
f5b859b2f097 nginx 1.1.16
Igor Sysoev <http://sysoev.ru>
parents: 662
diff changeset
1708 node = (rc < 0) ? node->left : node->right;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1709 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1710
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1711 /* not found */
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 return NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1714 }
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1717 static ngx_resolver_node_t *
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1718 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
1719 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1720 ngx_rbtree_node_t *node, *sentinel;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1721
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1722 node = r->addr_rbtree.root;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1723 sentinel = r->addr_rbtree.sentinel;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1724
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1725 while (node != sentinel) {
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 if (addr < node->key) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1728 node = node->left;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1729 continue;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1730 }
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 if (addr > node->key) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1733 node = node->right;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1734 continue;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1735 }
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 /* addr == node->key */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1738
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1739 return (ngx_resolver_node_t *) node;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1740 }
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 /* not found */
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 return NULL;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1745 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1746
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1747
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1748 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1749 ngx_resolver_rbtree_insert_value(ngx_rbtree_node_t *temp,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1750 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1751 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1752 ngx_rbtree_node_t **p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1753 ngx_resolver_node_t *rn, *rn_temp;
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 for ( ;; ) {
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 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->left;
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 if (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 p = &temp->right;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1764
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1765 } else { /* node->key == temp->key */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1766
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1767 rn = (ngx_resolver_node_t *) node;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1768 rn_temp = (ngx_resolver_node_t *) temp;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1769
528
005a70f9573b nginx 0.8.16
Igor Sysoev <http://sysoev.ru>
parents: 484
diff changeset
1770 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
1771 < 0) ? &temp->left : &temp->right;
350
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 if (*p == sentinel) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1775 break;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1778 temp = *p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1779 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1780
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1781 *p = node;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1782 node->parent = temp;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1783 node->left = sentinel;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1784 node->right = sentinel;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1785 ngx_rbt_red(node);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1786 }
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1789 static ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1790 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
1791 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1792 u_char *p, *s;
544
40c366b3535c nginx 0.8.24
Igor Sysoev <http://sysoev.ru>
parents: 542
diff changeset
1793 size_t len, nlen;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1794 ngx_uint_t ident;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1795 ngx_resolver_qs_t *qs;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1796 ngx_resolver_query_t *query;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1797
544
40c366b3535c nginx 0.8.24
Igor Sysoev <http://sysoev.ru>
parents: 542
diff changeset
1798 nlen = ctx->name.len ? (1 + ctx->name.len + 1) : 1;
40c366b3535c nginx 0.8.24
Igor Sysoev <http://sysoev.ru>
parents: 542
diff changeset
1799
40c366b3535c nginx 0.8.24
Igor Sysoev <http://sysoev.ru>
parents: 542
diff changeset
1800 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
1801
40c366b3535c nginx 0.8.24
Igor Sysoev <http://sysoev.ru>
parents: 542
diff changeset
1802 p = ngx_resolver_alloc(ctx->resolver, len);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1803 if (p == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1804 return NGX_ERROR;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1807 rn->qlen = (u_short) len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1808 rn->query = p;
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 query = (ngx_resolver_query_t *) p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1811
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1812 ident = ngx_random();
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1813
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1814 ngx_log_debug2(NGX_LOG_DEBUG_CORE, ctx->resolver->log, 0,
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1815 "resolve: \"%V\" %i", &ctx->name, ident & 0xffff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1816
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1817 query->ident_hi = (u_char) ((ident >> 8) & 0xff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1818 query->ident_lo = (u_char) (ident & 0xff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1819
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1820 /* recursion query */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1821 query->flags_hi = 1; query->flags_lo = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1822
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1823 /* one question */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1824 query->nqs_hi = 0; query->nqs_lo = 1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1825 query->nan_hi = 0; query->nan_lo = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1826 query->nns_hi = 0; query->nns_lo = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1827 query->nar_hi = 0; query->nar_lo = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1828
544
40c366b3535c nginx 0.8.24
Igor Sysoev <http://sysoev.ru>
parents: 542
diff changeset
1829 p += sizeof(ngx_resolver_query_t) + nlen;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1830
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1831 qs = (ngx_resolver_qs_t *) p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1832
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1833 /* query type */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1834 qs->type_hi = 0; qs->type_lo = (u_char) ctx->type;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1835
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1836 /* IP query class */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1837 qs->class_hi = 0; qs->class_lo = 1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1838
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1839 /* convert "www.example.com" to "\3www\7example\3com\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 len = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1842 p--;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1843 *p-- = '\0';
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1844
674
4dcaf40cc702 nginx 1.3.0
Igor Sysoev <http://sysoev.ru>
parents: 668
diff changeset
1845 if (ctx->name.len == 0) {
4dcaf40cc702 nginx 1.3.0
Igor Sysoev <http://sysoev.ru>
parents: 668
diff changeset
1846 return NGX_DECLINED;
4dcaf40cc702 nginx 1.3.0
Igor Sysoev <http://sysoev.ru>
parents: 668
diff changeset
1847 }
4dcaf40cc702 nginx 1.3.0
Igor Sysoev <http://sysoev.ru>
parents: 668
diff changeset
1848
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1849 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
1850 if (*s != '.') {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1851 *p = *s;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1852 len++;
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 } else {
668
9fbf3ad94cbf nginx 1.1.18
Igor Sysoev <http://sysoev.ru>
parents: 664
diff changeset
1855 if (len == 0 || len > 255) {
372
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1856 return NGX_DECLINED;
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1857 }
6639b93e81b2 nginx 0.6.30
Igor Sysoev <http://sysoev.ru>
parents: 366
diff changeset
1858
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1859 *p = (u_char) len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1860 len = 0;
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 p--;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1864 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1865
668
9fbf3ad94cbf nginx 1.1.18
Igor Sysoev <http://sysoev.ru>
parents: 664
diff changeset
1866 if (len == 0 || len > 255) {
9fbf3ad94cbf nginx 1.1.18
Igor Sysoev <http://sysoev.ru>
parents: 664
diff changeset
1867 return NGX_DECLINED;
9fbf3ad94cbf nginx 1.1.18
Igor Sysoev <http://sysoev.ru>
parents: 664
diff changeset
1868 }
9fbf3ad94cbf nginx 1.1.18
Igor Sysoev <http://sysoev.ru>
parents: 664
diff changeset
1869
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1870 *p = (u_char) len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1871
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1872 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1873 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1874
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1875
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1876 /* AF_INET only */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1877
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1878 static ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1879 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
1880 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1881 u_char *p, *d;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1882 size_t len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1883 ngx_int_t n;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1884 ngx_uint_t ident;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1885 ngx_resolver_query_t *query;
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 len = sizeof(ngx_resolver_query_t)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1888 + sizeof(".255.255.255.255.in-addr.arpa.") - 1
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1889 + sizeof(ngx_resolver_qs_t);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1890
544
40c366b3535c nginx 0.8.24
Igor Sysoev <http://sysoev.ru>
parents: 542
diff changeset
1891 p = ngx_resolver_alloc(ctx->resolver, len);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1892 if (p == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1893 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1894 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1895
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1896 rn->query = p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1897 query = (ngx_resolver_query_t *) p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1898
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1899 ident = ngx_random();
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 query->ident_hi = (u_char) ((ident >> 8) & 0xff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1902 query->ident_lo = (u_char) (ident & 0xff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1903
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1904 /* recursion query */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1905 query->flags_hi = 1; query->flags_lo = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1906
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1907 /* one question */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1908 query->nqs_hi = 0; query->nqs_lo = 1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1909 query->nan_hi = 0; query->nan_lo = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1910 query->nns_hi = 0; query->nns_lo = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1911 query->nar_hi = 0; query->nar_lo = 0;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1912
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1913 p += sizeof(ngx_resolver_query_t);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1914
582
c456a023113c nginx 0.8.43
Igor Sysoev <http://sysoev.ru>
parents: 560
diff changeset
1915 for (n = 0; n < 32; n += 8) {
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1916 d = ngx_sprintf(&p[1], "%ud", (ctx->addr >> n) & 0xff);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1917 *p = (u_char) (d - &p[1]);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1918 p = d;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1919 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1920
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1921 /* query type "PTR", IP query class */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1922 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
1923
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1924 rn->qlen = (u_short)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1925 (p + sizeof("\7in-addr\4arpa") + sizeof(ngx_resolver_qs_t)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1926 - rn->query);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1927
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1928 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1929 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1930
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 static ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1933 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
1934 u_char *last)
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 char *err;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1937 u_char *p, *dst;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1938 ssize_t len;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1939 ngx_uint_t i, n;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1940
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1941 p = src;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1942 len = -1;
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 /*
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1945 * compression pointers allow to create endless loop, so we set limit;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1946 * 128 pointers should be enough to store 255-byte name
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1947 */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1948
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1949 for (i = 0; i < 128; i++) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1950 n = *p++;
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 if (n == 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1953 goto done;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1954 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1955
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1956 if (n & 0xc0) {
420
ad0a34a8efa6 nginx 0.7.22
Igor Sysoev <http://sysoev.ru>
parents: 416
diff changeset
1957 n = ((n & 0x3f) << 8) + *p;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1958 p = &buf[n];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1959
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1960 } else {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1961 len += 1 + n;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1962 p = &p[n];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1963 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1964
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1965 if (p >= last) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1966 err = "name is out of response";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1967 goto invalid;
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 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1970
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1971 err = "compression pointers loop";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1972
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1973 invalid:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1974
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1975 ngx_log_error(r->log_level, r->log, 0, err);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1976
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1977 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1978
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1979 done:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1980
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1981 if (name == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1982 return NGX_OK;
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
542
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
1985 if (len == -1) {
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
1986 name->len = 0;
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
1987 name->data = NULL;
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
1988 return NGX_OK;
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
1989 }
2b9e388c61f1 nginx 0.8.23
Igor Sysoev <http://sysoev.ru>
parents: 540
diff changeset
1990
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1991 dst = ngx_resolver_alloc(r, len);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1992 if (dst == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1993 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1994 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1995
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1996 name->data = dst;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1997
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1998 n = *src++;
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 for ( ;; ) {
648
f200748c0ac8 nginx 1.1.8
Igor Sysoev <http://sysoev.ru>
parents: 646
diff changeset
2001 if (n & 0xc0) {
f200748c0ac8 nginx 1.1.8
Igor Sysoev <http://sysoev.ru>
parents: 646
diff changeset
2002 n = ((n & 0x3f) << 8) + *src;
f200748c0ac8 nginx 1.1.8
Igor Sysoev <http://sysoev.ru>
parents: 646
diff changeset
2003 src = &buf[n];
f200748c0ac8 nginx 1.1.8
Igor Sysoev <http://sysoev.ru>
parents: 646
diff changeset
2004
f200748c0ac8 nginx 1.1.8
Igor Sysoev <http://sysoev.ru>
parents: 646
diff changeset
2005 n = *src++;
f200748c0ac8 nginx 1.1.8
Igor Sysoev <http://sysoev.ru>
parents: 646
diff changeset
2006
f200748c0ac8 nginx 1.1.8
Igor Sysoev <http://sysoev.ru>
parents: 646
diff changeset
2007 } else {
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2008 ngx_memcpy(dst, src, n);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2009 dst += n;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2010 src += n;
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 n = *src++;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2013
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2014 if (n != 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2015 *dst++ = '.';
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2016 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2017 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2018
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2019 if (n == 0) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2020 name->len = dst - name->data;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2021 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2022 }
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 }
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 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2028 ngx_resolver_timeout_handler(ngx_event_t *ev)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2029 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2030 ngx_resolver_ctx_t *ctx;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2031
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2032 ctx = ev->data;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2033
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2034 ctx->state = NGX_RESOLVE_TIMEDOUT;
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 ctx->handler(ctx);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2037 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2038
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2039
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2040 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2041 ngx_resolver_free_node(ngx_resolver_t *r, ngx_resolver_node_t *rn)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2042 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2043 /* lock alloc mutex */
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->query) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2046 ngx_resolver_free_locked(r, rn->query);
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 if (rn->name) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2050 ngx_resolver_free_locked(r, rn->name);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2051 }
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 if (rn->cnlen) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2054 ngx_resolver_free_locked(r, rn->u.cname);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2055 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2056
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2057 if (rn->naddrs > 1) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2058 ngx_resolver_free_locked(r, rn->u.addrs);
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2061 ngx_resolver_free_locked(r, rn);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2062
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2063 /* unlock alloc mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2064 }
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2067 static void *
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2068 ngx_resolver_alloc(ngx_resolver_t *r, size_t size)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2069 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2070 u_char *p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2071
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2072 /* lock alloc mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2073
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2074 p = ngx_alloc(size, r->log);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2075
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2076 /* unlock alloc mutex */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2077
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2078 return p;
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
366
babd3d9efb62 nginx 0.6.27
Igor Sysoev <http://sysoev.ru>
parents: 364
diff changeset
2082 static void *
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2083 ngx_resolver_calloc(ngx_resolver_t *r, size_t size)
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 u_char *p;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2086
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2087 p = ngx_resolver_alloc(r, size);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2088
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2089 if (p) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2090 ngx_memzero(p, size);
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2093 return p;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2097 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2098 ngx_resolver_free(ngx_resolver_t *r, void *p)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2099 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2100 /* lock alloc mutex */
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 ngx_free(p);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2103
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2104 /* unlock alloc mutex */
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
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 static void
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2109 ngx_resolver_free_locked(ngx_resolver_t *r, void *p)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2110 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2111 ngx_free(p);
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2115 static void *
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2116 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
2117 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2118 void *dst;
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 dst = ngx_resolver_alloc(r, size);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2121
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2122 if (dst == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2123 return dst;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2124 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2125
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2126 ngx_memcpy(dst, src, size);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2127
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2128 return dst;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2132 char *
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2133 ngx_resolver_strerror(ngx_int_t err)
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 static char *errors[] = {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2136 "Format error", /* FORMERR */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2137 "Server failure", /* SERVFAIL */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2138 "Host not found", /* NXDOMAIN */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2139 "Unimplemented", /* NOTIMP */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2140 "Operation refused" /* REFUSED */
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2143 if (err > 0 && err < 6) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2144 return errors[err - 1];
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2145 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2146
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2147 if (err == NGX_RESOLVE_TIMEDOUT) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2148 return "Operation timed out";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2149 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2150
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2151 return "Unknown error";
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2152 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2153
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2154
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2155 static u_char *
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2156 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
2157 {
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2158 u_char *p;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2159 ngx_udp_connection_t *uc;
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 p = buf;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2162
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2163 if (log->action) {
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2164 p = ngx_snprintf(buf, len, " while %s", log->action);
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2165 len -= p - buf;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2166 }
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2167
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2168 uc = log->data;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2169
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2170 if (uc) {
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2171 p = ngx_snprintf(p, len, ", resolver: %V", &uc->server);
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2172 }
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2173
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2174 return p;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2175 }
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2176
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2177
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2178 ngx_int_t
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2179 ngx_udp_connect(ngx_udp_connection_t *uc)
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2180 {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2181 int rc;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2182 ngx_int_t event;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2183 ngx_event_t *rev, *wev;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2184 ngx_socket_t s;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2185 ngx_connection_t *c;
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 s = ngx_socket(AF_INET, SOCK_DGRAM, 0);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2188
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2189 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
2190
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2191 if (s == -1) {
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2192 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
2193 ngx_socket_n " failed");
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2194 return NGX_ERROR;
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
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2197 c = ngx_get_connection(s, &uc->log);
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2198
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2199 if (c == NULL) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2200 if (ngx_close_socket(s) == -1) {
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2201 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
2202 ngx_close_socket_n "failed");
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2203 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2204
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2205 return NGX_ERROR;
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2208 if (ngx_nonblocking(s) == -1) {
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2209 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
2210 ngx_nonblocking_n " failed");
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2211
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2212 ngx_free_connection(c);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2213
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2214 if (ngx_close_socket(s) == -1) {
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2215 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
2216 ngx_close_socket_n " failed");
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
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2219 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2220 }
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 rev = c->read;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2223 wev = c->write;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2224
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2225 rev->log = &uc->log;
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2226 wev->log = &uc->log;
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2227
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2228 uc->connection = c;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2229
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2230 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2231
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2232 #if (NGX_THREADS)
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 /* TODO: lock event when call completion handler */
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 rev->lock = &c->lock;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2237 wev->lock = &c->lock;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2238 rev->own_lock = &c->lock;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2239 wev->own_lock = &c->lock;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2240
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2241 #endif
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2242
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2243 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, &uc->log, 0,
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2244 "connect to %V, fd:%d #%d", &uc->server, s, c->number);
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2245
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2246 rc = connect(s, uc->sockaddr, uc->socklen);
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 /* TODO: aio, iocp */
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 if (rc == -1) {
560
daf4847b43ff nginx 0.8.32
Igor Sysoev <http://sysoev.ru>
parents: 556
diff changeset
2251 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
2252 "connect() failed");
350
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2253
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2254 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2255 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2256
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2257 /* UDP sockets are always ready to write */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2258 wev->ready = 1;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2259
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2260 if (ngx_add_event) {
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 event = (ngx_event_flags & NGX_USE_CLEAR_EVENT) ?
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2263 /* kqueue, epoll */ NGX_CLEAR_EVENT:
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2264 /* select, poll, /dev/poll */ NGX_LEVEL_EVENT;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2265 /* eventport event type has no meaning: oneshot only */
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 if (ngx_add_event(rev, NGX_READ_EVENT, event) != NGX_OK) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2268 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2269 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2270
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2271 } else {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2272 /* rtsig */
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2273
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2274 if (ngx_add_conn(c) == NGX_ERROR) {
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2275 return NGX_ERROR;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2276 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2277 }
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2278
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2279 return NGX_OK;
5a1bb0129dff nginx 0.6.19
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2280 }