Mercurial > hg > nginx-quic
annotate src/core/ngx_resolver.c @ 6603:9eefb38f0005
Internal md5 and sha1 implementations are now always used.
This reduces the number of moving parts in ABI compatibility checks.
Additionally, it also allows to use OpenSSL in FIPS mode while still
using md5 for non-security tasks.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Thu, 30 Jun 2016 18:57:39 +0300 |
parents | b3b7e33083ac |
children | c3e3de6d2672 |
rev | line source |
---|---|
583 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4412 | 4 * Copyright (C) Nginx, Inc. |
583 | 5 */ |
6 | |
7 | |
8 #include <ngx_config.h> | |
9 #include <ngx_core.h> | |
10 #include <ngx_event.h> | |
11 | |
12 | |
1649 | 13 #define NGX_RESOLVER_UDP_SIZE 4096 |
14 | |
6367 | 15 #define NGX_RESOLVER_TCP_RSIZE (2 + 65535) |
16 #define NGX_RESOLVER_TCP_WSIZE 8192 | |
17 | |
1649 | 18 |
583 | 19 typedef struct { |
1649 | 20 u_char ident_hi; |
21 u_char ident_lo; | |
22 u_char flags_hi; | |
23 u_char flags_lo; | |
24 u_char nqs_hi; | |
25 u_char nqs_lo; | |
26 u_char nan_hi; | |
27 u_char nan_lo; | |
28 u_char nns_hi; | |
29 u_char nns_lo; | |
30 u_char nar_hi; | |
31 u_char nar_lo; | |
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32 } ngx_resolver_hdr_t; |
1649 | 33 |
34 | |
35 typedef struct { | |
36 u_char type_hi; | |
37 u_char type_lo; | |
38 u_char class_hi; | |
39 u_char class_lo; | |
40 } ngx_resolver_qs_t; | |
41 | |
42 | |
43 typedef struct { | |
44 u_char type_hi; | |
45 u_char type_lo; | |
46 u_char class_hi; | |
47 u_char class_lo; | |
48 u_char ttl[4]; | |
49 u_char len_hi; | |
50 u_char len_lo; | |
51 } ngx_resolver_an_t; | |
52 | |
53 | |
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54 #define ngx_resolver_node(n) \ |
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55 (ngx_resolver_node_t *) \ |
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56 ((u_char *) (n) - offsetof(ngx_resolver_node_t, node)) |
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57 |
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58 |
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59 ngx_int_t ngx_udp_connect(ngx_resolver_connection_t *rec); |
6367 | 60 ngx_int_t ngx_tcp_connect(ngx_resolver_connection_t *rec); |
1649 | 61 |
62 | |
1906 | 63 static void ngx_resolver_cleanup(void *data); |
64 static void ngx_resolver_cleanup_tree(ngx_resolver_t *r, ngx_rbtree_t *tree); | |
1649 | 65 static ngx_int_t ngx_resolve_name_locked(ngx_resolver_t *r, |
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66 ngx_resolver_ctx_t *ctx, ngx_str_t *name); |
1649 | 67 static void ngx_resolver_expire(ngx_resolver_t *r, ngx_rbtree_t *tree, |
68 ngx_queue_t *queue); | |
69 static ngx_int_t ngx_resolver_send_query(ngx_resolver_t *r, | |
70 ngx_resolver_node_t *rn); | |
6367 | 71 static ngx_int_t ngx_resolver_send_udp_query(ngx_resolver_t *r, |
72 ngx_resolver_connection_t *rec, u_char *query, u_short qlen); | |
73 static ngx_int_t ngx_resolver_send_tcp_query(ngx_resolver_t *r, | |
74 ngx_resolver_connection_t *rec, u_char *query, u_short qlen); | |
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75 static ngx_int_t ngx_resolver_create_name_query(ngx_resolver_t *r, |
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76 ngx_resolver_node_t *rn, ngx_str_t *name); |
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77 static ngx_int_t ngx_resolver_create_srv_query(ngx_resolver_t *r, |
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78 ngx_resolver_node_t *rn, ngx_str_t *name); |
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79 static ngx_int_t ngx_resolver_create_addr_query(ngx_resolver_t *r, |
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80 ngx_resolver_node_t *rn, ngx_resolver_addr_t *addr); |
1649 | 81 static void ngx_resolver_resend_handler(ngx_event_t *ev); |
82 static time_t ngx_resolver_resend(ngx_resolver_t *r, ngx_rbtree_t *tree, | |
83 ngx_queue_t *queue); | |
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84 static ngx_uint_t ngx_resolver_resend_empty(ngx_resolver_t *r); |
6367 | 85 static void ngx_resolver_udp_read(ngx_event_t *rev); |
86 static void ngx_resolver_tcp_write(ngx_event_t *wev); | |
87 static void ngx_resolver_tcp_read(ngx_event_t *rev); | |
1649 | 88 static void ngx_resolver_process_response(ngx_resolver_t *r, u_char *buf, |
6367 | 89 size_t n, ngx_uint_t tcp); |
1649 | 90 static void ngx_resolver_process_a(ngx_resolver_t *r, u_char *buf, size_t n, |
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91 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t qtype, |
6367 | 92 ngx_uint_t nan, ngx_uint_t trunc, ngx_uint_t ans); |
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93 static void ngx_resolver_process_srv(ngx_resolver_t *r, u_char *buf, size_t n, |
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94 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan, |
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95 ngx_uint_t trunc, ngx_uint_t ans); |
1649 | 96 static void ngx_resolver_process_ptr(ngx_resolver_t *r, u_char *buf, size_t n, |
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97 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan); |
1649 | 98 static ngx_resolver_node_t *ngx_resolver_lookup_name(ngx_resolver_t *r, |
99 ngx_str_t *name, uint32_t hash); | |
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100 static ngx_resolver_node_t *ngx_resolver_lookup_srv(ngx_resolver_t *r, |
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101 ngx_str_t *name, uint32_t hash); |
1649 | 102 static ngx_resolver_node_t *ngx_resolver_lookup_addr(ngx_resolver_t *r, |
103 in_addr_t addr); | |
104 static void ngx_resolver_rbtree_insert_value(ngx_rbtree_node_t *temp, | |
105 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel); | |
106 static ngx_int_t ngx_resolver_copy(ngx_resolver_t *r, ngx_str_t *name, | |
107 u_char *buf, u_char *src, u_char *last); | |
108 static void ngx_resolver_timeout_handler(ngx_event_t *ev); | |
109 static void ngx_resolver_free_node(ngx_resolver_t *r, ngx_resolver_node_t *rn); | |
110 static void *ngx_resolver_alloc(ngx_resolver_t *r, size_t size); | |
1903 | 111 static void *ngx_resolver_calloc(ngx_resolver_t *r, size_t size); |
1649 | 112 static void ngx_resolver_free(ngx_resolver_t *r, void *p); |
113 static void ngx_resolver_free_locked(ngx_resolver_t *r, void *p); | |
114 static void *ngx_resolver_dup(ngx_resolver_t *r, void *src, size_t size); | |
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115 static ngx_resolver_addr_t *ngx_resolver_export(ngx_resolver_t *r, |
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116 ngx_resolver_node_t *rn, ngx_uint_t rotate); |
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117 static void ngx_resolver_report_srv(ngx_resolver_t *r, ngx_resolver_ctx_t *ctx); |
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118 static u_char *ngx_resolver_log_error(ngx_log_t *log, u_char *buf, size_t len); |
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119 static void ngx_resolver_resolve_srv_names(ngx_resolver_ctx_t *ctx, |
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120 ngx_resolver_node_t *rn); |
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121 static void ngx_resolver_srv_names_handler(ngx_resolver_ctx_t *ctx); |
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122 static ngx_int_t ngx_resolver_cmp_srvs(const void *one, const void *two); |
1649 | 123 |
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124 #if (NGX_HAVE_INET6) |
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125 static void ngx_resolver_rbtree_insert_addr6_value(ngx_rbtree_node_t *temp, |
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126 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel); |
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127 static ngx_resolver_node_t *ngx_resolver_lookup_addr6(ngx_resolver_t *r, |
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128 struct in6_addr *addr, uint32_t hash); |
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129 #endif |
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130 |
1649 | 131 |
132 ngx_resolver_t * | |
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133 ngx_resolver_create(ngx_conf_t *cf, ngx_str_t *names, ngx_uint_t n) |
1649 | 134 { |
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135 ngx_str_t s; |
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136 ngx_url_t u; |
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137 ngx_uint_t i, j; |
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138 ngx_resolver_t *r; |
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139 ngx_pool_cleanup_t *cln; |
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140 ngx_resolver_connection_t *rec; |
1649 | 141 |
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142 cln = ngx_pool_cleanup_add(cf->pool, 0); |
1906 | 143 if (cln == NULL) { |
144 return NULL; | |
145 } | |
146 | |
147 cln->handler = ngx_resolver_cleanup; | |
148 | |
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149 r = ngx_calloc(sizeof(ngx_resolver_t), cf->log); |
1649 | 150 if (r == NULL) { |
151 return NULL; | |
152 } | |
153 | |
1906 | 154 cln->data = r; |
155 | |
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156 r->event = ngx_calloc(sizeof(ngx_event_t), cf->log); |
1649 | 157 if (r->event == NULL) { |
158 return NULL; | |
159 } | |
160 | |
1687 | 161 ngx_rbtree_init(&r->name_rbtree, &r->name_sentinel, |
162 ngx_resolver_rbtree_insert_value); | |
163 | |
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164 ngx_rbtree_init(&r->srv_rbtree, &r->srv_sentinel, |
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165 ngx_resolver_rbtree_insert_value); |
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166 |
1687 | 167 ngx_rbtree_init(&r->addr_rbtree, &r->addr_sentinel, |
168 ngx_rbtree_insert_value); | |
1649 | 169 |
1685 | 170 ngx_queue_init(&r->name_resend_queue); |
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171 ngx_queue_init(&r->srv_resend_queue); |
1685 | 172 ngx_queue_init(&r->addr_resend_queue); |
173 | |
174 ngx_queue_init(&r->name_expire_queue); | |
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175 ngx_queue_init(&r->srv_expire_queue); |
1685 | 176 ngx_queue_init(&r->addr_expire_queue); |
1649 | 177 |
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178 #if (NGX_HAVE_INET6) |
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179 r->ipv6 = 1; |
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180 |
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181 ngx_rbtree_init(&r->addr6_rbtree, &r->addr6_sentinel, |
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182 ngx_resolver_rbtree_insert_addr6_value); |
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183 |
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184 ngx_queue_init(&r->addr6_resend_queue); |
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185 |
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186 ngx_queue_init(&r->addr6_expire_queue); |
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187 #endif |
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188 |
1649 | 189 r->event->handler = ngx_resolver_resend_handler; |
190 r->event->data = r; | |
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191 r->event->log = &cf->cycle->new_log; |
1649 | 192 r->ident = -1; |
193 | |
194 r->resend_timeout = 5; | |
6367 | 195 r->tcp_timeout = 5; |
1649 | 196 r->expire = 30; |
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197 r->valid = 0; |
1649 | 198 |
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199 r->log = &cf->cycle->new_log; |
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200 r->log_level = NGX_LOG_ERR; |
1649 | 201 |
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202 if (n) { |
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203 if (ngx_array_init(&r->connections, cf->pool, n, |
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204 sizeof(ngx_resolver_connection_t)) |
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205 != NGX_OK) |
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206 { |
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207 return NULL; |
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208 } |
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209 } |
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210 |
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211 for (i = 0; i < n; i++) { |
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212 if (ngx_strncmp(names[i].data, "valid=", 6) == 0) { |
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213 s.len = names[i].len - 6; |
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214 s.data = names[i].data + 6; |
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215 |
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216 r->valid = ngx_parse_time(&s, 1); |
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217 |
4474 | 218 if (r->valid == (time_t) NGX_ERROR) { |
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219 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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|
220 "invalid parameter: %V", &names[i]); |
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221 return NULL; |
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222 } |
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223 |
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224 continue; |
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225 } |
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226 |
5478
3cb3175a6fef
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|
227 #if (NGX_HAVE_INET6) |
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228 if (ngx_strncmp(names[i].data, "ipv6=", 5) == 0) { |
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229 |
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230 if (ngx_strcmp(&names[i].data[5], "on") == 0) { |
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231 r->ipv6 = 1; |
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232 |
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233 } else if (ngx_strcmp(&names[i].data[5], "off") == 0) { |
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234 r->ipv6 = 0; |
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235 |
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|
236 } else { |
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|
237 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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|
238 "invalid parameter: %V", &names[i]); |
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239 return NULL; |
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240 } |
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241 |
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242 continue; |
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243 } |
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The "ipv6=" boolean parameter of the "resolver" directive.
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244 #endif |
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245 |
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246 ngx_memzero(&u, sizeof(ngx_url_t)); |
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247 |
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248 u.url = names[i]; |
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249 u.default_port = 53; |
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250 |
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|
251 if (ngx_parse_url(cf->pool, &u) != NGX_OK) { |
4643
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252 if (u.err) { |
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Fixed potential null pointer dereference in ngx_resolver_create().
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253 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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Fixed potential null pointer dereference in ngx_resolver_create().
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254 "%s in resolver \"%V\"", |
4671
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|
255 u.err, &u.url); |
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256 } |
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Fixed potential null pointer dereference in ngx_resolver_create().
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|
257 |
4225
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258 return NULL; |
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259 } |
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260 |
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261 rec = ngx_array_push_n(&r->connections, u.naddrs); |
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262 if (rec == NULL) { |
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263 return NULL; |
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|
264 } |
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265 |
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|
266 ngx_memzero(rec, u.naddrs * sizeof(ngx_resolver_connection_t)); |
4684
f5c2c9d656f9
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|
267 |
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parents:
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diff
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|
268 for (j = 0; j < u.naddrs; j++) { |
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269 rec[j].sockaddr = u.addrs[j].sockaddr; |
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270 rec[j].socklen = u.addrs[j].socklen; |
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271 rec[j].server = u.addrs[j].name; |
6367 | 272 rec[j].resolver = r; |
4684
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|
273 } |
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|
274 } |
1649 | 275 |
276 return r; | |
277 } | |
278 | |
279 | |
1906 | 280 static void |
281 ngx_resolver_cleanup(void *data) | |
282 { | |
283 ngx_resolver_t *r = data; | |
284 | |
6365
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|
285 ngx_uint_t i; |
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|
286 ngx_resolver_connection_t *rec; |
4225
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287 |
1906 | 288 if (r) { |
289 ngx_log_debug0(NGX_LOG_DEBUG_CORE, ngx_cycle->log, 0, | |
290 "cleanup resolver"); | |
291 | |
292 ngx_resolver_cleanup_tree(r, &r->name_rbtree); | |
293 | |
6458
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Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
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|
294 ngx_resolver_cleanup_tree(r, &r->srv_rbtree); |
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Resolver: added support for SRV records.
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diff
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|
295 |
1906 | 296 ngx_resolver_cleanup_tree(r, &r->addr_rbtree); |
297 | |
5476
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Resolver: implemented IPv6 address to name resolving.
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|
298 #if (NGX_HAVE_INET6) |
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|
299 ngx_resolver_cleanup_tree(r, &r->addr6_rbtree); |
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|
300 #endif |
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|
301 |
1906 | 302 if (r->event) { |
303 ngx_free(r->event); | |
304 } | |
305 | |
4225
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|
306 |
6365
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|
307 rec = r->connections.elts; |
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|
308 |
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
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diff
changeset
|
309 for (i = 0; i < r->connections.nelts; i++) { |
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diff
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|
310 if (rec[i].udp) { |
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6352
diff
changeset
|
311 ngx_close_connection(rec[i].udp); |
1906 | 312 } |
6367 | 313 |
314 if (rec[i].tcp) { | |
315 ngx_close_connection(rec[i].tcp); | |
316 } | |
6369
06459bc8b92f
Resolver: free TCP buffers on resolver cleanup.
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diff
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|
317 |
06459bc8b92f
Resolver: free TCP buffers on resolver cleanup.
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diff
changeset
|
318 if (rec[i].read_buf) { |
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Resolver: free TCP buffers on resolver cleanup.
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diff
changeset
|
319 ngx_resolver_free(r, rec[i].read_buf->start); |
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Resolver: free TCP buffers on resolver cleanup.
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diff
changeset
|
320 ngx_resolver_free(r, rec[i].read_buf); |
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Resolver: free TCP buffers on resolver cleanup.
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diff
changeset
|
321 } |
06459bc8b92f
Resolver: free TCP buffers on resolver cleanup.
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diff
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|
322 |
06459bc8b92f
Resolver: free TCP buffers on resolver cleanup.
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diff
changeset
|
323 if (rec[i].write_buf) { |
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Resolver: free TCP buffers on resolver cleanup.
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diff
changeset
|
324 ngx_resolver_free(r, rec[i].write_buf->start); |
06459bc8b92f
Resolver: free TCP buffers on resolver cleanup.
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diff
changeset
|
325 ngx_resolver_free(r, rec[i].write_buf); |
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diff
changeset
|
326 } |
1906 | 327 } |
328 | |
329 ngx_free(r); | |
330 } | |
331 } | |
332 | |
333 | |
334 static void | |
335 ngx_resolver_cleanup_tree(ngx_resolver_t *r, ngx_rbtree_t *tree) | |
336 { | |
337 ngx_resolver_ctx_t *ctx, *next; | |
338 ngx_resolver_node_t *rn; | |
339 | |
340 while (tree->root != tree->sentinel) { | |
341 | |
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
342 rn = ngx_resolver_node(ngx_rbtree_min(tree->root, tree->sentinel)); |
1906 | 343 |
344 ngx_queue_remove(&rn->queue); | |
345 | |
346 for (ctx = rn->waiting; ctx; ctx = next) { | |
2006
b52cb9bf2064
style fix: remove tabs and trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
1969
diff
changeset
|
347 next = ctx->next; |
1906 | 348 |
349 if (ctx->event) { | |
350 ngx_resolver_free(r, ctx->event); | |
351 } | |
352 | |
353 ngx_resolver_free(r, ctx); | |
354 } | |
355 | |
356 ngx_rbtree_delete(tree, &rn->node); | |
357 | |
358 ngx_resolver_free_node(r, rn); | |
359 } | |
360 } | |
361 | |
362 | |
1649 | 363 ngx_resolver_ctx_t * |
364 ngx_resolve_start(ngx_resolver_t *r, ngx_resolver_ctx_t *temp) | |
365 { | |
366 in_addr_t addr; | |
367 ngx_resolver_ctx_t *ctx; | |
368 | |
369 if (temp) { | |
370 addr = ngx_inet_addr(temp->name.data, temp->name.len); | |
371 | |
372 if (addr != INADDR_NONE) { | |
373 temp->resolver = r; | |
374 temp->state = NGX_OK; | |
375 temp->naddrs = 1; | |
376 temp->addrs = &temp->addr; | |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
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parents:
5474
diff
changeset
|
377 temp->addr.sockaddr = (struct sockaddr *) &temp->sin; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
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parents:
5474
diff
changeset
|
378 temp->addr.socklen = sizeof(struct sockaddr_in); |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
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parents:
5474
diff
changeset
|
379 ngx_memzero(&temp->sin, sizeof(struct sockaddr_in)); |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
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parents:
5474
diff
changeset
|
380 temp->sin.sin_family = AF_INET; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
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5474
diff
changeset
|
381 temp->sin.sin_addr.s_addr = addr; |
1649 | 382 temp->quick = 1; |
383 | |
384 return temp; | |
385 } | |
386 } | |
387 | |
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
388 if (r->connections.nelts == 0) { |
1683
1e0b028055ec
allow to use IP addresses without defined resolver
Igor Sysoev <igor@sysoev.ru>
parents:
1679
diff
changeset
|
389 return NGX_NO_RESOLVER; |
1e0b028055ec
allow to use IP addresses without defined resolver
Igor Sysoev <igor@sysoev.ru>
parents:
1679
diff
changeset
|
390 } |
1e0b028055ec
allow to use IP addresses without defined resolver
Igor Sysoev <igor@sysoev.ru>
parents:
1679
diff
changeset
|
391 |
1649 | 392 ctx = ngx_resolver_calloc(r, sizeof(ngx_resolver_ctx_t)); |
393 | |
394 if (ctx) { | |
395 ctx->resolver = r; | |
396 } | |
397 | |
398 return ctx; | |
399 } | |
400 | |
401 | |
402 ngx_int_t | |
403 ngx_resolve_name(ngx_resolver_ctx_t *ctx) | |
404 { | |
6458
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Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
405 size_t slen; |
1649 | 406 ngx_int_t rc; |
6458
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Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
407 ngx_str_t name; |
1649 | 408 ngx_resolver_t *r; |
409 | |
410 r = ctx->resolver; | |
411 | |
5505
d091d16ed398
Resolver: added support for domain names with a trailing dot.
Yichun Zhang <agentzh@gmail.com>
parents:
5485
diff
changeset
|
412 if (ctx->name.len > 0 && ctx->name.data[ctx->name.len - 1] == '.') { |
d091d16ed398
Resolver: added support for domain names with a trailing dot.
Yichun Zhang <agentzh@gmail.com>
parents:
5485
diff
changeset
|
413 ctx->name.len--; |
d091d16ed398
Resolver: added support for domain names with a trailing dot.
Yichun Zhang <agentzh@gmail.com>
parents:
5485
diff
changeset
|
414 } |
d091d16ed398
Resolver: added support for domain names with a trailing dot.
Yichun Zhang <agentzh@gmail.com>
parents:
5485
diff
changeset
|
415 |
1649 | 416 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, |
417 "resolve: \"%V\"", &ctx->name); | |
418 | |
419 if (ctx->quick) { | |
420 ctx->handler(ctx); | |
421 return NGX_OK; | |
422 } | |
423 | |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
424 if (ctx->service.len) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
425 slen = ctx->service.len; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
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diff
changeset
|
426 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
427 if (ngx_strlchr(ctx->service.data, |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
428 ctx->service.data + ctx->service.len, '.') |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
429 == NULL) |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
430 { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
431 slen += sizeof("_._tcp") - 1; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
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diff
changeset
|
432 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
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diff
changeset
|
433 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
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6457
diff
changeset
|
434 name.len = slen + 1 + ctx->name.len; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
435 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
436 name.data = ngx_resolver_alloc(r, name.len); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
437 if (name.data == NULL) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
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diff
changeset
|
438 return NGX_ERROR; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
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diff
changeset
|
439 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
440 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
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diff
changeset
|
441 if (slen == ctx->service.len) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
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diff
changeset
|
442 ngx_sprintf(name.data, "%V.%V", &ctx->service, &ctx->name); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
443 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
444 } else { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
445 ngx_sprintf(name.data, "_%V._tcp.%V", &ctx->service, &ctx->name); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
446 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
447 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
448 /* lock name mutex */ |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
449 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
450 rc = ngx_resolve_name_locked(r, ctx, &name); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
451 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
452 ngx_resolver_free(r, name.data); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
453 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
454 } else { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
455 /* lock name mutex */ |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
456 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
457 rc = ngx_resolve_name_locked(r, ctx, &ctx->name); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
458 } |
1649 | 459 |
460 if (rc == NGX_OK) { | |
461 return NGX_OK; | |
462 } | |
463 | |
464 /* unlock name mutex */ | |
465 | |
466 if (rc == NGX_AGAIN) { | |
467 return NGX_OK; | |
468 } | |
469 | |
1904
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
470 /* NGX_ERROR */ |
1649 | 471 |
472 if (ctx->event) { | |
1904
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
473 ngx_resolver_free(r, ctx->event); |
1649 | 474 } |
475 | |
1904
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
476 ngx_resolver_free(r, ctx); |
1649 | 477 |
478 return NGX_ERROR; | |
479 } | |
480 | |
481 | |
482 void | |
483 ngx_resolve_name_done(ngx_resolver_ctx_t *ctx) | |
484 { | |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
485 ngx_uint_t i; |
1649 | 486 ngx_resolver_t *r; |
487 ngx_resolver_ctx_t *w, **p; | |
488 ngx_resolver_node_t *rn; | |
489 | |
490 r = ctx->resolver; | |
491 | |
492 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, | |
493 "resolve name done: %i", ctx->state); | |
494 | |
495 if (ctx->quick) { | |
496 return; | |
497 } | |
498 | |
499 if (ctx->event && ctx->event->timer_set) { | |
500 ngx_del_timer(ctx->event); | |
501 } | |
502 | |
503 /* lock name mutex */ | |
504 | |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
505 if (ctx->nsrvs) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
506 for (i = 0; i < ctx->nsrvs; i++) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
507 if (ctx->srvs[i].ctx) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
508 ngx_resolve_name_done(ctx->srvs[i].ctx); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
509 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
510 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
511 if (ctx->srvs[i].addrs) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
512 ngx_resolver_free(r, ctx->srvs[i].addrs->sockaddr); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
513 ngx_resolver_free(r, ctx->srvs[i].addrs); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
514 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
515 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
516 ngx_resolver_free(r, ctx->srvs[i].name.data); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
517 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
518 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
519 ngx_resolver_free(r, ctx->srvs); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
520 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
521 |
6348
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
522 if (ctx->state == NGX_AGAIN || ctx->state == NGX_RESOLVE_TIMEDOUT) { |
1649 | 523 |
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
524 rn = ctx->node; |
1649 | 525 |
526 if (rn) { | |
527 p = &rn->waiting; | |
528 w = rn->waiting; | |
529 | |
530 while (w) { | |
531 if (w == ctx) { | |
532 *p = w->next; | |
533 | |
534 goto done; | |
535 } | |
536 | |
537 p = &w->next; | |
538 w = w->next; | |
539 } | |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
540 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
541 ngx_log_error(NGX_LOG_ALERT, r->log, 0, |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
542 "could not cancel %V resolving", &ctx->name); |
1649 | 543 } |
544 } | |
545 | |
546 done: | |
547 | |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
548 if (ctx->service.len) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
549 ngx_resolver_expire(r, &r->srv_rbtree, &r->srv_expire_queue); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
550 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
551 } else { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
552 ngx_resolver_expire(r, &r->name_rbtree, &r->name_expire_queue); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
553 } |
1649 | 554 |
555 /* unlock name mutex */ | |
556 | |
1904
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
557 /* lock alloc mutex */ |
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
558 |
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
559 if (ctx->event) { |
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
560 ngx_resolver_free_locked(r, ctx->event); |
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
561 } |
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
562 |
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
563 ngx_resolver_free_locked(r, ctx); |
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
564 |
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
565 /* unlock alloc mutex */ |
6196
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
566 |
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
567 if (r->event->timer_set && ngx_resolver_resend_empty(r)) { |
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
568 ngx_del_timer(r->event); |
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
569 } |
1649 | 570 } |
571 | |
572 | |
573 static ngx_int_t | |
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
574 ngx_resolve_name_locked(ngx_resolver_t *r, ngx_resolver_ctx_t *ctx, |
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
575 ngx_str_t *name) |
1649 | 576 { |
577 uint32_t hash; | |
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
578 ngx_int_t rc; |
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
579 ngx_str_t cname; |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
580 ngx_uint_t i, naddrs; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
581 ngx_queue_t *resend_queue, *expire_queue; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
582 ngx_rbtree_t *tree; |
6349
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
583 ngx_resolver_ctx_t *next, *last; |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
584 ngx_resolver_addr_t *addrs; |
1649 | 585 ngx_resolver_node_t *rn; |
586 | |
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
587 ngx_strlow(name->data, name->data, name->len); |
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
588 |
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
589 hash = ngx_crc32_short(name->data, name->len); |
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
590 |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
591 if (ctx->service.len) { |
384154fc634f
Resolver: added support for SRV records.
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parents:
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diff
changeset
|
592 rn = ngx_resolver_lookup_srv(r, name, hash); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
593 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
594 tree = &r->srv_rbtree; |
384154fc634f
Resolver: added support for SRV records.
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parents:
6457
diff
changeset
|
595 resend_queue = &r->srv_resend_queue; |
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Resolver: added support for SRV records.
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parents:
6457
diff
changeset
|
596 expire_queue = &r->srv_expire_queue; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
597 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
598 } else { |
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Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
599 rn = ngx_resolver_lookup_name(r, name, hash); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
600 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
601 tree = &r->name_rbtree; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
602 resend_queue = &r->name_resend_queue; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
603 expire_queue = &r->name_expire_queue; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
604 } |
1649 | 605 |
606 if (rn) { | |
607 | |
6349
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
608 /* ctx can be a list after NGX_RESOLVE_CNAME */ |
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
609 for (last = ctx; last->next; last = last->next); |
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
610 |
1649 | 611 if (rn->valid >= ngx_time()) { |
612 | |
613 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, "resolve cached"); | |
614 | |
615 ngx_queue_remove(&rn->queue); | |
616 | |
617 rn->expire = ngx_time() + r->expire; | |
618 | |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
619 ngx_queue_insert_head(expire_queue, &rn->queue); |
1649 | 620 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
621 naddrs = (rn->naddrs == (u_short) -1) ? 0 : rn->naddrs; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
622 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
623 naddrs += (rn->naddrs6 == (u_short) -1) ? 0 : rn->naddrs6; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
624 #endif |
1649 | 625 |
626 if (naddrs) { | |
627 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
628 if (naddrs == 1 && rn->naddrs == 1) { |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
629 addrs = NULL; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
630 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
631 } else { |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
632 addrs = ngx_resolver_export(r, rn, 1); |
1649 | 633 if (addrs == NULL) { |
634 return NGX_ERROR; | |
635 } | |
636 } | |
637 | |
6349
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
638 last->next = rn->waiting; |
1649 | 639 rn->waiting = NULL; |
640 | |
641 /* unlock name mutex */ | |
642 | |
643 do { | |
644 ctx->state = NGX_OK; | |
6456
c94aba230a5a
Resolver: introduced valid field in resolver responses.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6372
diff
changeset
|
645 ctx->valid = rn->valid; |
1649 | 646 ctx->naddrs = naddrs; |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
647 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
648 if (addrs == NULL) { |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
649 ctx->addrs = &ctx->addr; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
650 ctx->addr.sockaddr = (struct sockaddr *) &ctx->sin; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
651 ctx->addr.socklen = sizeof(struct sockaddr_in); |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
652 ngx_memzero(&ctx->sin, sizeof(struct sockaddr_in)); |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
653 ctx->sin.sin_family = AF_INET; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
654 ctx->sin.sin_addr.s_addr = rn->u.addr; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
655 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
656 } else { |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
657 ctx->addrs = addrs; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
658 } |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
659 |
1649 | 660 next = ctx->next; |
661 | |
662 ctx->handler(ctx); | |
663 | |
664 ctx = next; | |
665 } while (ctx); | |
666 | |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
667 if (addrs != NULL) { |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
668 ngx_resolver_free(r, addrs->sockaddr); |
1649 | 669 ngx_resolver_free(r, addrs); |
670 } | |
671 | |
672 return NGX_OK; | |
673 } | |
674 | |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
675 if (rn->nsrvs) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
676 last->next = rn->waiting; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
677 rn->waiting = NULL; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
678 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
679 /* unlock name mutex */ |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
680 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
681 do { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
682 next = ctx->next; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
683 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
684 ngx_resolver_resolve_srv_names(ctx, rn); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
685 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
686 ctx = next; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
687 } while (ctx); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
688 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
689 return NGX_OK; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
690 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
691 |
1649 | 692 /* NGX_RESOLVE_CNAME */ |
693 | |
1969 | 694 if (ctx->recursion++ < NGX_RESOLVER_MAX_RECURSION) { |
695 | |
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
696 cname.len = rn->cnlen; |
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
697 cname.data = rn->u.cname; |
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
698 |
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
699 return ngx_resolve_name_locked(r, ctx, &cname); |
1969 | 700 } |
701 | |
6349
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
702 last->next = rn->waiting; |
1969 | 703 rn->waiting = NULL; |
704 | |
705 /* unlock name mutex */ | |
706 | |
707 do { | |
708 ctx->state = NGX_RESOLVE_NXDOMAIN; | |
6456
c94aba230a5a
Resolver: introduced valid field in resolver responses.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6372
diff
changeset
|
709 ctx->valid = ngx_time() + (r->valid ? r->valid : 10); |
1969 | 710 next = ctx->next; |
711 | |
712 ctx->handler(ctx); | |
713 | |
714 ctx = next; | |
715 } while (ctx); | |
716 | |
717 return NGX_OK; | |
1649 | 718 } |
719 | |
720 if (rn->waiting) { | |
721 | |
6457
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
722 if (ctx->event == NULL && ctx->timeout) { |
6348
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
723 ctx->event = ngx_resolver_calloc(r, sizeof(ngx_event_t)); |
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
724 if (ctx->event == NULL) { |
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
725 return NGX_ERROR; |
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
726 } |
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
727 |
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
728 ctx->event->handler = ngx_resolver_timeout_handler; |
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
729 ctx->event->data = ctx; |
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
730 ctx->event->log = r->log; |
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
731 ctx->ident = -1; |
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
732 |
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
733 ngx_add_timer(ctx->event, ctx->timeout); |
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
734 } |
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
735 |
6349
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
736 last->next = rn->waiting; |
1649 | 737 rn->waiting = ctx; |
3297 | 738 ctx->state = NGX_AGAIN; |
1649 | 739 |
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
740 do { |
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
741 ctx->node = rn; |
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
742 ctx = ctx->next; |
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
743 } while (ctx); |
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
744 |
1649 | 745 return NGX_AGAIN; |
746 } | |
747 | |
748 ngx_queue_remove(&rn->queue); | |
749 | |
750 /* lock alloc mutex */ | |
751 | |
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
752 if (rn->query) { |
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
753 ngx_resolver_free_locked(r, rn->query); |
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
754 rn->query = NULL; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
755 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
756 rn->query6 = NULL; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
757 #endif |
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
758 } |
1649 | 759 |
760 if (rn->cnlen) { | |
761 ngx_resolver_free_locked(r, rn->u.cname); | |
762 } | |
763 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
764 if (rn->naddrs > 1 && rn->naddrs != (u_short) -1) { |
1649 | 765 ngx_resolver_free_locked(r, rn->u.addrs); |
766 } | |
767 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
768 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
769 if (rn->naddrs6 > 1 && rn->naddrs6 != (u_short) -1) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
770 ngx_resolver_free_locked(r, rn->u6.addrs6); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
771 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
772 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
773 |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
774 if (rn->nsrvs) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
775 for (i = 0; i < rn->nsrvs; i++) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
776 if (rn->u.srvs[i].name.data) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
777 ngx_resolver_free_locked(r, rn->u.srvs[i].name.data); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
778 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
779 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
780 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
781 ngx_resolver_free_locked(r, rn->u.srvs); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
782 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
783 |
1649 | 784 /* unlock alloc mutex */ |
785 | |
786 } else { | |
787 | |
788 rn = ngx_resolver_alloc(r, sizeof(ngx_resolver_node_t)); | |
789 if (rn == NULL) { | |
790 return NGX_ERROR; | |
791 } | |
792 | |
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
793 rn->name = ngx_resolver_dup(r, name->data, name->len); |
1649 | 794 if (rn->name == NULL) { |
795 ngx_resolver_free(r, rn); | |
796 return NGX_ERROR; | |
797 } | |
798 | |
799 rn->node.key = hash; | |
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
800 rn->nlen = (u_short) name->len; |
1960
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
801 rn->query = NULL; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
802 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
803 rn->query6 = NULL; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
804 #endif |
1649 | 805 |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
806 ngx_rbtree_insert(tree, &rn->node); |
1649 | 807 } |
808 | |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
809 if (ctx->service.len) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
810 rc = ngx_resolver_create_srv_query(r, rn, name); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
811 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
812 } else { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
813 rc = ngx_resolver_create_name_query(r, rn, name); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
814 } |
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
815 |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
816 if (rc == NGX_ERROR) { |
1649 | 817 goto failed; |
818 } | |
819 | |
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
820 if (rc == NGX_DECLINED) { |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
821 ngx_rbtree_delete(tree, &rn->node); |
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
822 |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
823 ngx_resolver_free(r, rn->query); |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
824 ngx_resolver_free(r, rn->name); |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
825 ngx_resolver_free(r, rn); |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
826 |
6349
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
827 do { |
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
828 ctx->state = NGX_RESOLVE_NXDOMAIN; |
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
829 next = ctx->next; |
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
830 |
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
831 ctx->handler(ctx); |
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
832 |
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
833 ctx = next; |
978e79b95c9f
Resolver: fixed CNAME processing for several requests.
Ruslan Ermilov <ru@nginx.com>
parents:
6348
diff
changeset
|
834 } while (ctx); |
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
835 |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
836 return NGX_OK; |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
837 } |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
838 |
6366
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
839 rn->last_connection = r->last_connection++; |
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
840 if (r->last_connection == r->connections.nelts) { |
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
841 r->last_connection = 0; |
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
842 } |
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
843 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
844 rn->naddrs = (u_short) -1; |
6367 | 845 rn->tcp = 0; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
846 #if (NGX_HAVE_INET6) |
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
847 rn->naddrs6 = r->ipv6 ? (u_short) -1 : 0; |
6367 | 848 rn->tcp6 = 0; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
849 #endif |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
850 rn->nsrvs = 0; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
851 |
1649 | 852 if (ngx_resolver_send_query(r, rn) != NGX_OK) { |
853 goto failed; | |
854 } | |
855 | |
6457
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
856 if (ctx->event == NULL && ctx->timeout) { |
1649 | 857 ctx->event = ngx_resolver_calloc(r, sizeof(ngx_event_t)); |
858 if (ctx->event == NULL) { | |
859 goto failed; | |
860 } | |
861 | |
862 ctx->event->handler = ngx_resolver_timeout_handler; | |
6348
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
863 ctx->event->data = ctx; |
1649 | 864 ctx->event->log = r->log; |
6348
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
865 ctx->ident = -1; |
1649 | 866 |
867 ngx_add_timer(ctx->event, ctx->timeout); | |
868 } | |
869 | |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
870 if (ngx_queue_empty(resend_queue)) { |
1649 | 871 ngx_add_timer(r->event, (ngx_msec_t) (r->resend_timeout * 1000)); |
872 } | |
873 | |
874 rn->expire = ngx_time() + r->resend_timeout; | |
875 | |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
876 ngx_queue_insert_head(resend_queue, &rn->queue); |
1649 | 877 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
878 rn->code = 0; |
1649 | 879 rn->cnlen = 0; |
880 rn->valid = 0; | |
5485
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
881 rn->ttl = NGX_MAX_UINT32_VALUE; |
1649 | 882 rn->waiting = ctx; |
883 | |
884 ctx->state = NGX_AGAIN; | |
885 | |
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
886 do { |
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
887 ctx->node = rn; |
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
888 ctx = ctx->next; |
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
889 } while (ctx); |
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
890 |
1649 | 891 return NGX_AGAIN; |
892 | |
893 failed: | |
894 | |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
895 ngx_rbtree_delete(tree, &rn->node); |
1649 | 896 |
1960
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
897 if (rn->query) { |
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
898 ngx_resolver_free(r, rn->query); |
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
899 } |
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
900 |
1649 | 901 ngx_resolver_free(r, rn->name); |
902 | |
903 ngx_resolver_free(r, rn); | |
904 | |
905 return NGX_ERROR; | |
906 } | |
583 | 907 |
908 | |
909 ngx_int_t | |
1649 | 910 ngx_resolve_addr(ngx_resolver_ctx_t *ctx) |
911 { | |
2484
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
912 u_char *name; |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
913 in_addr_t addr; |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
914 ngx_queue_t *resend_queue, *expire_queue; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
915 ngx_rbtree_t *tree; |
1649 | 916 ngx_resolver_t *r; |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
917 struct sockaddr_in *sin; |
1649 | 918 ngx_resolver_node_t *rn; |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
919 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
920 uint32_t hash; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
921 struct sockaddr_in6 *sin6; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
922 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
923 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
924 #if (NGX_SUPPRESS_WARN) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
925 addr = 0; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
926 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
927 hash = 0; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
928 sin6 = NULL; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
929 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
930 #endif |
1649 | 931 |
932 r = ctx->resolver; | |
933 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
934 switch (ctx->addr.sockaddr->sa_family) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
935 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
936 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
937 case AF_INET6: |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
938 sin6 = (struct sockaddr_in6 *) ctx->addr.sockaddr; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
939 hash = ngx_crc32_short(sin6->sin6_addr.s6_addr, 16); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
940 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
941 /* lock addr mutex */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
942 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
943 rn = ngx_resolver_lookup_addr6(r, &sin6->sin6_addr, hash); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
944 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
945 tree = &r->addr6_rbtree; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
946 resend_queue = &r->addr6_resend_queue; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
947 expire_queue = &r->addr6_expire_queue; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
948 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
949 break; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
950 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
951 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
952 default: /* AF_INET */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
953 sin = (struct sockaddr_in *) ctx->addr.sockaddr; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
954 addr = ntohl(sin->sin_addr.s_addr); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
955 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
956 /* lock addr mutex */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
957 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
958 rn = ngx_resolver_lookup_addr(r, addr); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
959 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
960 tree = &r->addr_rbtree; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
961 resend_queue = &r->addr_resend_queue; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
962 expire_queue = &r->addr_expire_queue; |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
963 } |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
964 |
1649 | 965 if (rn) { |
966 | |
967 if (rn->valid >= ngx_time()) { | |
968 | |
969 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, "resolve cached"); | |
970 | |
971 ngx_queue_remove(&rn->queue); | |
972 | |
973 rn->expire = ngx_time() + r->expire; | |
974 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
975 ngx_queue_insert_head(expire_queue, &rn->queue); |
1649 | 976 |
2484
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
977 name = ngx_resolver_dup(r, rn->name, rn->nlen); |
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
978 if (name == NULL) { |
1649 | 979 goto failed; |
980 } | |
981 | |
2484
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
982 ctx->name.len = rn->nlen; |
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
983 ctx->name.data = name; |
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
984 |
1649 | 985 /* unlock addr mutex */ |
986 | |
987 ctx->state = NGX_OK; | |
6456
c94aba230a5a
Resolver: introduced valid field in resolver responses.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6372
diff
changeset
|
988 ctx->valid = rn->valid; |
1649 | 989 |
990 ctx->handler(ctx); | |
991 | |
2484
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
992 ngx_resolver_free(r, name); |
1649 | 993 |
994 return NGX_OK; | |
995 } | |
996 | |
997 if (rn->waiting) { | |
998 | |
6457
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
999 if (ctx->event == NULL && ctx->timeout) { |
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
1000 ctx->event = ngx_resolver_calloc(r, sizeof(ngx_event_t)); |
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
1001 if (ctx->event == NULL) { |
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
1002 return NGX_ERROR; |
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
1003 } |
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
1004 |
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
1005 ctx->event->handler = ngx_resolver_timeout_handler; |
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
1006 ctx->event->data = ctx; |
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
1007 ctx->event->log = r->log; |
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
1008 ctx->ident = -1; |
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
1009 |
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
1010 ngx_add_timer(ctx->event, ctx->timeout); |
6348
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
1011 } |
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
1012 |
1649 | 1013 ctx->next = rn->waiting; |
1014 rn->waiting = ctx; | |
3297 | 1015 ctx->state = NGX_AGAIN; |
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
1016 ctx->node = rn; |
1649 | 1017 |
2487
9b4dce95c744
fix return code, this fixes segfault when two or more
Igor Sysoev <igor@sysoev.ru>
parents:
2486
diff
changeset
|
1018 /* unlock addr mutex */ |
9b4dce95c744
fix return code, this fixes segfault when two or more
Igor Sysoev <igor@sysoev.ru>
parents:
2486
diff
changeset
|
1019 |
9b4dce95c744
fix return code, this fixes segfault when two or more
Igor Sysoev <igor@sysoev.ru>
parents:
2486
diff
changeset
|
1020 return NGX_OK; |
1649 | 1021 } |
1022 | |
1023 ngx_queue_remove(&rn->queue); | |
1024 | |
1025 ngx_resolver_free(r, rn->query); | |
1960
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
1026 rn->query = NULL; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1027 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1028 rn->query6 = NULL; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1029 #endif |
1649 | 1030 |
1031 } else { | |
1032 rn = ngx_resolver_alloc(r, sizeof(ngx_resolver_node_t)); | |
1033 if (rn == NULL) { | |
1034 goto failed; | |
1035 } | |
1036 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1037 switch (ctx->addr.sockaddr->sa_family) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1038 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1039 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1040 case AF_INET6: |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1041 rn->addr6 = sin6->sin6_addr; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1042 rn->node.key = hash; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1043 break; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1044 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1045 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1046 default: /* AF_INET */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1047 rn->node.key = addr; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1048 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1049 |
1960
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
1050 rn->query = NULL; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1051 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1052 rn->query6 = NULL; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1053 #endif |
1649 | 1054 |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1055 ngx_rbtree_insert(tree, &rn->node); |
1649 | 1056 } |
1057 | |
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
1058 if (ngx_resolver_create_addr_query(r, rn, &ctx->addr) != NGX_OK) { |
1649 | 1059 goto failed; |
1060 } | |
1061 | |
6366
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1062 rn->last_connection = r->last_connection++; |
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1063 if (r->last_connection == r->connections.nelts) { |
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1064 r->last_connection = 0; |
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1065 } |
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1066 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1067 rn->naddrs = (u_short) -1; |
6367 | 1068 rn->tcp = 0; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1069 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1070 rn->naddrs6 = (u_short) -1; |
6367 | 1071 rn->tcp6 = 0; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1072 #endif |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1073 rn->nsrvs = 0; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1074 |
1649 | 1075 if (ngx_resolver_send_query(r, rn) != NGX_OK) { |
1076 goto failed; | |
1077 } | |
1078 | |
6457
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
1079 if (ctx->event == NULL && ctx->timeout) { |
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
1080 ctx->event = ngx_resolver_calloc(r, sizeof(ngx_event_t)); |
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
1081 if (ctx->event == NULL) { |
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
1082 goto failed; |
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
1083 } |
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
1084 |
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
1085 ctx->event->handler = ngx_resolver_timeout_handler; |
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
1086 ctx->event->data = ctx; |
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
1087 ctx->event->log = r->log; |
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
1088 ctx->ident = -1; |
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
1089 |
a6711b85da83
Resolver: do not enable resolve timer if provided timeout is zero.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6456
diff
changeset
|
1090 ngx_add_timer(ctx->event, ctx->timeout); |
1649 | 1091 } |
1092 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1093 if (ngx_queue_empty(resend_queue)) { |
1649 | 1094 ngx_add_timer(r->event, (ngx_msec_t) (r->resend_timeout * 1000)); |
1095 } | |
1096 | |
1097 rn->expire = ngx_time() + r->resend_timeout; | |
1098 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1099 ngx_queue_insert_head(resend_queue, &rn->queue); |
1649 | 1100 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1101 rn->code = 0; |
1649 | 1102 rn->cnlen = 0; |
1103 rn->name = NULL; | |
1104 rn->nlen = 0; | |
1105 rn->valid = 0; | |
5485
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
1106 rn->ttl = NGX_MAX_UINT32_VALUE; |
1649 | 1107 rn->waiting = ctx; |
1108 | |
1109 /* unlock addr mutex */ | |
1110 | |
1111 ctx->state = NGX_AGAIN; | |
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
1112 ctx->node = rn; |
1649 | 1113 |
1114 return NGX_OK; | |
1115 | |
1116 failed: | |
1117 | |
1118 if (rn) { | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1119 ngx_rbtree_delete(tree, &rn->node); |
1649 | 1120 |
1960
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
1121 if (rn->query) { |
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
1122 ngx_resolver_free(r, rn->query); |
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
1123 } |
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
1124 |
1649 | 1125 ngx_resolver_free(r, rn); |
1126 } | |
1127 | |
1128 /* unlock addr mutex */ | |
1129 | |
1130 if (ctx->event) { | |
1904
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1131 ngx_resolver_free(r, ctx->event); |
1649 | 1132 } |
1133 | |
1904
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1134 ngx_resolver_free(r, ctx); |
1649 | 1135 |
1136 return NGX_ERROR; | |
1137 } | |
1138 | |
1139 | |
1140 void | |
1141 ngx_resolve_addr_done(ngx_resolver_ctx_t *ctx) | |
1142 { | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1143 ngx_queue_t *expire_queue; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1144 ngx_rbtree_t *tree; |
1649 | 1145 ngx_resolver_t *r; |
1146 ngx_resolver_ctx_t *w, **p; | |
1147 ngx_resolver_node_t *rn; | |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1148 |
1649 | 1149 r = ctx->resolver; |
1150 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1151 switch (ctx->addr.sockaddr->sa_family) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1152 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1153 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1154 case AF_INET6: |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1155 tree = &r->addr6_rbtree; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1156 expire_queue = &r->addr6_expire_queue; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1157 break; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1158 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1159 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1160 default: /* AF_INET */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1161 tree = &r->addr_rbtree; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1162 expire_queue = &r->addr_expire_queue; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1163 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1164 |
1649 | 1165 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, |
1166 "resolve addr done: %i", ctx->state); | |
1167 | |
1168 if (ctx->event && ctx->event->timer_set) { | |
1169 ngx_del_timer(ctx->event); | |
1170 } | |
1171 | |
1172 /* lock addr mutex */ | |
1173 | |
6348
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
1174 if (ctx->state == NGX_AGAIN || ctx->state == NGX_RESOLVE_TIMEDOUT) { |
1649 | 1175 |
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
1176 rn = ctx->node; |
1649 | 1177 |
1178 if (rn) { | |
1179 p = &rn->waiting; | |
1180 w = rn->waiting; | |
1181 | |
1182 while (w) { | |
1183 if (w == ctx) { | |
1184 *p = w->next; | |
1185 | |
1186 goto done; | |
1187 } | |
1188 | |
1189 p = &w->next; | |
1190 w = w->next; | |
1191 } | |
1192 } | |
1193 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1194 { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1195 u_char text[NGX_SOCKADDR_STRLEN]; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1196 ngx_str_t addrtext; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1197 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1198 addrtext.data = text; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1199 addrtext.len = ngx_sock_ntop(ctx->addr.sockaddr, ctx->addr.socklen, |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1200 text, NGX_SOCKADDR_STRLEN, 0); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
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5475
diff
changeset
|
1201 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1202 ngx_log_error(NGX_LOG_ALERT, r->log, 0, |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1203 "could not cancel %V resolving", &addrtext); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1204 } |
1649 | 1205 } |
1206 | |
1207 done: | |
1208 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1209 ngx_resolver_expire(r, tree, expire_queue); |
1649 | 1210 |
1211 /* unlock addr mutex */ | |
1212 | |
1904
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1213 /* lock alloc mutex */ |
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1214 |
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1215 if (ctx->event) { |
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1216 ngx_resolver_free_locked(r, ctx->event); |
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1217 } |
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1218 |
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1219 ngx_resolver_free_locked(r, ctx); |
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1220 |
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1221 /* unlock alloc mutex */ |
6196
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1222 |
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1223 if (r->event->timer_set && ngx_resolver_resend_empty(r)) { |
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1224 ngx_del_timer(r->event); |
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1225 } |
1649 | 1226 } |
1227 | |
1228 | |
1229 static void | |
1230 ngx_resolver_expire(ngx_resolver_t *r, ngx_rbtree_t *tree, ngx_queue_t *queue) | |
1231 { | |
1232 time_t now; | |
1233 ngx_uint_t i; | |
1234 ngx_queue_t *q; | |
1235 ngx_resolver_node_t *rn; | |
1236 | |
1237 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver expire"); | |
1238 | |
1239 now = ngx_time(); | |
1240 | |
1241 for (i = 0; i < 2; i++) { | |
1242 if (ngx_queue_empty(queue)) { | |
1243 return; | |
1244 } | |
1245 | |
1246 q = ngx_queue_last(queue); | |
1247 | |
1248 rn = ngx_queue_data(q, ngx_resolver_node_t, queue); | |
1249 | |
1250 if (now <= rn->expire) { | |
1251 return; | |
1252 } | |
1253 | |
1774 | 1254 ngx_log_debug2(NGX_LOG_DEBUG_CORE, r->log, 0, |
1255 "resolver expire \"%*s\"", (size_t) rn->nlen, rn->name); | |
1649 | 1256 |
1257 ngx_queue_remove(q); | |
1258 | |
1259 ngx_rbtree_delete(tree, &rn->node); | |
1260 | |
1261 ngx_resolver_free_node(r, rn); | |
1262 } | |
1263 } | |
1264 | |
1265 | |
1266 static ngx_int_t | |
1267 ngx_resolver_send_query(ngx_resolver_t *r, ngx_resolver_node_t *rn) | |
1268 { | |
6367 | 1269 ngx_int_t rc; |
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
1270 ngx_resolver_connection_t *rec; |
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
1271 |
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
1272 rec = r->connections.elts; |
6366
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1273 rec = &rec[rn->last_connection]; |
1649 | 1274 |
6367 | 1275 if (rec->log.handler == NULL) { |
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
1276 rec->log = *r->log; |
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
1277 rec->log.handler = ngx_resolver_log_error; |
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
1278 rec->log.data = rec; |
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
1279 rec->log.action = "resolving"; |
1649 | 1280 } |
1281 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1282 if (rn->naddrs == (u_short) -1) { |
6367 | 1283 rc = rn->tcp ? ngx_resolver_send_tcp_query(r, rec, rn->query, rn->qlen) |
1284 : ngx_resolver_send_udp_query(r, rec, rn->query, rn->qlen); | |
1285 | |
1286 if (rc != NGX_OK) { | |
1287 return rc; | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1288 } |
1649 | 1289 } |
1290 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1291 #if (NGX_HAVE_INET6) |
6367 | 1292 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1293 if (rn->query6 && rn->naddrs6 == (u_short) -1) { |
6367 | 1294 rc = rn->tcp6 |
1295 ? ngx_resolver_send_tcp_query(r, rec, rn->query6, rn->qlen) | |
1296 : ngx_resolver_send_udp_query(r, rec, rn->query6, rn->qlen); | |
1297 | |
1298 if (rc != NGX_OK) { | |
1299 return rc; | |
1300 } | |
1301 } | |
1302 | |
1303 #endif | |
1304 | |
1305 return NGX_OK; | |
1306 } | |
1307 | |
1308 | |
1309 static ngx_int_t | |
1310 ngx_resolver_send_udp_query(ngx_resolver_t *r, ngx_resolver_connection_t *rec, | |
1311 u_char *query, u_short qlen) | |
1312 { | |
1313 ssize_t n; | |
1314 | |
1315 if (rec->udp == NULL) { | |
1316 if (ngx_udp_connect(rec) != NGX_OK) { | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1317 return NGX_ERROR; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1318 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1319 |
6367 | 1320 rec->udp->data = rec; |
1321 rec->udp->read->handler = ngx_resolver_udp_read; | |
1322 rec->udp->read->resolver = 1; | |
1323 } | |
1324 | |
1325 n = ngx_send(rec->udp, query, qlen); | |
1326 | |
1327 if (n == -1) { | |
1328 return NGX_ERROR; | |
1329 } | |
1330 | |
1331 if ((size_t) n != (size_t) qlen) { | |
1332 ngx_log_error(NGX_LOG_CRIT, &rec->log, 0, "send() incomplete"); | |
1333 return NGX_ERROR; | |
1334 } | |
1335 | |
1336 return NGX_OK; | |
1337 } | |
1338 | |
1339 | |
1340 static ngx_int_t | |
1341 ngx_resolver_send_tcp_query(ngx_resolver_t *r, ngx_resolver_connection_t *rec, | |
1342 u_char *query, u_short qlen) | |
1343 { | |
1344 ngx_buf_t *b; | |
1345 ngx_int_t rc; | |
1346 | |
1347 rc = NGX_OK; | |
1348 | |
1349 if (rec->tcp == NULL) { | |
1350 b = rec->read_buf; | |
1351 | |
1352 if (b == NULL) { | |
1353 b = ngx_resolver_calloc(r, sizeof(ngx_buf_t)); | |
1354 if (b == NULL) { | |
1355 return NGX_ERROR; | |
1356 } | |
1357 | |
1358 b->start = ngx_resolver_alloc(r, NGX_RESOLVER_TCP_RSIZE); | |
1359 if (b->start == NULL) { | |
6368
d73f77bb5caf
Resolver: fixed possible resource leak introduced in 5a16d40c63de.
Ruslan Ermilov <ru@nginx.com>
parents:
6367
diff
changeset
|
1360 ngx_resolver_free(r, b); |
6367 | 1361 return NGX_ERROR; |
1362 } | |
1363 | |
1364 b->end = b->start + NGX_RESOLVER_TCP_RSIZE; | |
1365 | |
1366 rec->read_buf = b; | |
1367 } | |
1368 | |
1369 b->pos = b->start; | |
1370 b->last = b->start; | |
1371 | |
1372 b = rec->write_buf; | |
1373 | |
1374 if (b == NULL) { | |
1375 b = ngx_resolver_calloc(r, sizeof(ngx_buf_t)); | |
1376 if (b == NULL) { | |
1377 return NGX_ERROR; | |
1378 } | |
1379 | |
1380 b->start = ngx_resolver_alloc(r, NGX_RESOLVER_TCP_WSIZE); | |
1381 if (b->start == NULL) { | |
6368
d73f77bb5caf
Resolver: fixed possible resource leak introduced in 5a16d40c63de.
Ruslan Ermilov <ru@nginx.com>
parents:
6367
diff
changeset
|
1382 ngx_resolver_free(r, b); |
6367 | 1383 return NGX_ERROR; |
1384 } | |
1385 | |
1386 b->end = b->start + NGX_RESOLVER_TCP_WSIZE; | |
1387 | |
1388 rec->write_buf = b; | |
1389 } | |
1390 | |
1391 b->pos = b->start; | |
1392 b->last = b->start; | |
1393 | |
1394 rc = ngx_tcp_connect(rec); | |
1395 if (rc == NGX_ERROR) { | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1396 return NGX_ERROR; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1397 } |
6367 | 1398 |
1399 rec->tcp->data = rec; | |
1400 rec->tcp->write->handler = ngx_resolver_tcp_write; | |
1401 rec->tcp->read->handler = ngx_resolver_tcp_read; | |
1402 rec->tcp->read->resolver = 1; | |
1403 | |
1404 ngx_add_timer(rec->tcp->write, (ngx_msec_t) (r->tcp_timeout * 1000)); | |
1649 | 1405 } |
6367 | 1406 |
1407 b = rec->write_buf; | |
1408 | |
1409 if (b->end - b->last < 2 + qlen) { | |
1410 ngx_log_error(NGX_LOG_CRIT, &rec->log, 0, "buffer overflow"); | |
1411 return NGX_ERROR; | |
1412 } | |
1413 | |
1414 *b->last++ = (u_char) (qlen >> 8); | |
1415 *b->last++ = (u_char) qlen; | |
1416 b->last = ngx_cpymem(b->last, query, qlen); | |
1417 | |
1418 if (rc == NGX_OK) { | |
1419 ngx_resolver_tcp_write(rec->tcp->write); | |
1420 } | |
1649 | 1421 |
1422 return NGX_OK; | |
1423 } | |
1424 | |
1425 | |
1426 static void | |
1427 ngx_resolver_resend_handler(ngx_event_t *ev) | |
1428 { | |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1429 time_t timer, atimer, stimer, ntimer; |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1430 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1431 time_t a6timer; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1432 #endif |
1649 | 1433 ngx_resolver_t *r; |
1434 | |
1435 r = ev->data; | |
1436 | |
1437 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, | |
1438 "resolver resend handler"); | |
1439 | |
1440 /* lock name mutex */ | |
1441 | |
1442 ntimer = ngx_resolver_resend(r, &r->name_rbtree, &r->name_resend_queue); | |
1443 | |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1444 stimer = ngx_resolver_resend(r, &r->srv_rbtree, &r->srv_resend_queue); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1445 |
1649 | 1446 /* unlock name mutex */ |
1447 | |
1448 /* lock addr mutex */ | |
1449 | |
1450 atimer = ngx_resolver_resend(r, &r->addr_rbtree, &r->addr_resend_queue); | |
1679
ca317d9b5c09
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
1649
diff
changeset
|
1451 |
1649 | 1452 /* unlock addr mutex */ |
1453 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1454 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1455 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1456 /* lock addr6 mutex */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1457 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1458 a6timer = ngx_resolver_resend(r, &r->addr6_rbtree, &r->addr6_resend_queue); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1459 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1460 /* unlock addr6 mutex */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1461 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1462 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1463 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1464 timer = ntimer; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1465 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1466 if (timer == 0) { |
1649 | 1467 timer = atimer; |
1468 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1469 } else if (atimer) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1470 timer = ngx_min(timer, atimer); |
1649 | 1471 } |
1472 | |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1473 if (timer == 0) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1474 timer = stimer; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1475 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1476 } else if (stimer) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1477 timer = ngx_min(timer, stimer); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1478 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1479 |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1480 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1481 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1482 if (timer == 0) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1483 timer = a6timer; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1484 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1485 } else if (a6timer) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1486 timer = ngx_min(timer, a6timer); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1487 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1488 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1489 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1490 |
1649 | 1491 if (timer) { |
1492 ngx_add_timer(r->event, (ngx_msec_t) (timer * 1000)); | |
1493 } | |
1494 } | |
1495 | |
1496 | |
1497 static time_t | |
1498 ngx_resolver_resend(ngx_resolver_t *r, ngx_rbtree_t *tree, ngx_queue_t *queue) | |
1499 { | |
1500 time_t now; | |
1501 ngx_queue_t *q; | |
1502 ngx_resolver_node_t *rn; | |
1503 | |
1504 now = ngx_time(); | |
1505 | |
1506 for ( ;; ) { | |
1507 if (ngx_queue_empty(queue)) { | |
1508 return 0; | |
1509 } | |
1510 | |
1511 q = ngx_queue_last(queue); | |
1512 | |
1513 rn = ngx_queue_data(q, ngx_resolver_node_t, queue); | |
1514 | |
1515 if (now < rn->expire) { | |
1516 return rn->expire - now; | |
1517 } | |
1518 | |
1774 | 1519 ngx_log_debug3(NGX_LOG_DEBUG_CORE, r->log, 0, |
1520 "resolver resend \"%*s\" %p", | |
1521 (size_t) rn->nlen, rn->name, rn->waiting); | |
1649 | 1522 |
1523 ngx_queue_remove(q); | |
1524 | |
1525 if (rn->waiting) { | |
1526 | |
6366
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1527 if (++rn->last_connection == r->connections.nelts) { |
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1528 rn->last_connection = 0; |
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1529 } |
2e5c027f2a98
Resolver: per-request DNS server balancer.
Roman Arutyunyan <arut@nginx.com>
parents:
6365
diff
changeset
|
1530 |
4683
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1531 (void) ngx_resolver_send_query(r, rn); |
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1532 |
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1533 rn->expire = now + r->resend_timeout; |
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1534 |
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1535 ngx_queue_insert_head(queue, q); |
1879
cf4ee321d195
do not delete failed DNS request if there are waiting clients
Igor Sysoev <igor@sysoev.ru>
parents:
1878
diff
changeset
|
1536 |
cf4ee321d195
do not delete failed DNS request if there are waiting clients
Igor Sysoev <igor@sysoev.ru>
parents:
1878
diff
changeset
|
1537 continue; |
1649 | 1538 } |
1539 | |
1540 ngx_rbtree_delete(tree, &rn->node); | |
1541 | |
1542 ngx_resolver_free_node(r, rn); | |
1543 } | |
1544 } | |
1545 | |
1546 | |
6196
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1547 static ngx_uint_t |
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1548 ngx_resolver_resend_empty(ngx_resolver_t *r) |
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1549 { |
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1550 return ngx_queue_empty(&r->name_resend_queue) |
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1551 #if (NGX_HAVE_INET6) |
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1552 && ngx_queue_empty(&r->addr6_resend_queue) |
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1553 #endif |
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1554 && ngx_queue_empty(&r->addr_resend_queue); |
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1555 } |
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1556 |
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1557 |
1649 | 1558 static void |
6367 | 1559 ngx_resolver_udp_read(ngx_event_t *rev) |
1649 | 1560 { |
6367 | 1561 ssize_t n; |
1562 ngx_connection_t *c; | |
1563 ngx_resolver_connection_t *rec; | |
1564 u_char buf[NGX_RESOLVER_UDP_SIZE]; | |
1649 | 1565 |
1566 c = rev->data; | |
6367 | 1567 rec = c->data; |
1649 | 1568 |
1569 do { | |
1689 | 1570 n = ngx_udp_recv(c, buf, NGX_RESOLVER_UDP_SIZE); |
1571 | |
1572 if (n < 0) { | |
1649 | 1573 return; |
1574 } | |
1575 | |
6367 | 1576 ngx_resolver_process_response(rec->resolver, buf, n, 0); |
1649 | 1577 |
1578 } while (rev->ready); | |
1579 } | |
1580 | |
1581 | |
1582 static void | |
6367 | 1583 ngx_resolver_tcp_write(ngx_event_t *wev) |
1584 { | |
1585 off_t sent; | |
1586 ssize_t n; | |
1587 ngx_buf_t *b; | |
1588 ngx_resolver_t *r; | |
1589 ngx_connection_t *c; | |
1590 ngx_resolver_connection_t *rec; | |
1591 | |
1592 c = wev->data; | |
1593 rec = c->data; | |
1594 b = rec->write_buf; | |
1595 r = rec->resolver; | |
1596 | |
1597 if (wev->timedout) { | |
1598 goto failed; | |
1599 } | |
1600 | |
1601 sent = c->sent; | |
1602 | |
1603 while (wev->ready && b->pos < b->last) { | |
1604 n = ngx_send(c, b->pos, b->last - b->pos); | |
1605 | |
1606 if (n == NGX_AGAIN) { | |
1607 break; | |
1608 } | |
1609 | |
1610 if (n == NGX_ERROR) { | |
1611 goto failed; | |
1612 } | |
1613 | |
1614 b->pos += n; | |
1615 } | |
1616 | |
1617 if (b->pos != b->start) { | |
1618 b->last = ngx_movemem(b->start, b->pos, b->last - b->pos); | |
1619 b->pos = b->start; | |
1620 } | |
1621 | |
1622 if (c->sent != sent) { | |
1623 ngx_add_timer(wev, (ngx_msec_t) (r->tcp_timeout * 1000)); | |
1624 } | |
1625 | |
1626 if (ngx_handle_write_event(wev, 0) != NGX_OK) { | |
1627 goto failed; | |
1628 } | |
1629 | |
1630 return; | |
1631 | |
1632 failed: | |
1633 | |
1634 ngx_close_connection(c); | |
1635 rec->tcp = NULL; | |
1636 } | |
1637 | |
1638 | |
1639 static void | |
1640 ngx_resolver_tcp_read(ngx_event_t *rev) | |
1641 { | |
1642 u_char *p; | |
1643 size_t size; | |
1644 ssize_t n; | |
1645 u_short qlen; | |
1646 ngx_buf_t *b; | |
1647 ngx_resolver_t *r; | |
1648 ngx_connection_t *c; | |
1649 ngx_resolver_connection_t *rec; | |
1650 | |
1651 c = rev->data; | |
1652 rec = c->data; | |
1653 b = rec->read_buf; | |
1654 r = rec->resolver; | |
1655 | |
1656 while (rev->ready) { | |
1657 n = ngx_recv(c, b->last, b->end - b->last); | |
1658 | |
1659 if (n == NGX_AGAIN) { | |
1660 break; | |
1661 } | |
1662 | |
1663 if (n == NGX_ERROR || n == 0) { | |
1664 goto failed; | |
1665 } | |
1666 | |
1667 b->last += n; | |
1668 | |
1669 for ( ;; ) { | |
1670 p = b->pos; | |
1671 size = b->last - p; | |
1672 | |
1673 if (size < 2) { | |
1674 break; | |
1675 } | |
1676 | |
1677 qlen = (u_short) *p++ << 8; | |
1678 qlen += *p++; | |
1679 | |
1680 if (size < (size_t) (2 + qlen)) { | |
1681 break; | |
1682 } | |
1683 | |
1684 ngx_resolver_process_response(r, p, qlen, 1); | |
1685 | |
1686 b->pos += 2 + qlen; | |
1687 } | |
1688 | |
1689 if (b->pos != b->start) { | |
1690 b->last = ngx_movemem(b->start, b->pos, b->last - b->pos); | |
1691 b->pos = b->start; | |
1692 } | |
1693 } | |
1694 | |
1695 if (ngx_handle_read_event(rev, 0) != NGX_OK) { | |
1696 goto failed; | |
1697 } | |
1698 | |
1699 return; | |
1700 | |
1701 failed: | |
1702 | |
1703 ngx_close_connection(c); | |
1704 rec->tcp = NULL; | |
1705 } | |
1706 | |
1707 | |
1708 static void | |
1709 ngx_resolver_process_response(ngx_resolver_t *r, u_char *buf, size_t n, | |
1710 ngx_uint_t tcp) | |
1649 | 1711 { |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1712 char *err; |
6367 | 1713 ngx_uint_t i, times, ident, qident, flags, code, nqs, nan, trunc, |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1714 qtype, qclass; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1715 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1716 ngx_uint_t qident6; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1717 #endif |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1718 ngx_queue_t *q; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1719 ngx_resolver_qs_t *qs; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1720 ngx_resolver_hdr_t *response; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1721 ngx_resolver_node_t *rn; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1722 |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1723 if (n < sizeof(ngx_resolver_hdr_t)) { |
1649 | 1724 goto short_response; |
1725 } | |
1726 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1727 response = (ngx_resolver_hdr_t *) buf; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1728 |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1729 ident = (response->ident_hi << 8) + response->ident_lo; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1730 flags = (response->flags_hi << 8) + response->flags_lo; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1731 nqs = (response->nqs_hi << 8) + response->nqs_lo; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1732 nan = (response->nan_hi << 8) + response->nan_lo; |
6367 | 1733 trunc = flags & 0x0200; |
1649 | 1734 |
1735 ngx_log_debug6(NGX_LOG_DEBUG_CORE, r->log, 0, | |
6509
7640d6c213e1
Removed redundant "u" format specifier.
Ruslan Ermilov <ru@nginx.com>
parents:
6478
diff
changeset
|
1736 "resolver DNS response %ui fl:%04Xi %ui/%ui/%ud/%ud", |
1649 | 1737 ident, flags, nqs, nan, |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1738 (response->nns_hi << 8) + response->nns_lo, |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1739 (response->nar_hi << 8) + response->nar_lo); |
1649 | 1740 |
5470
aebdca7e8f8f
Resolver: fixed response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5469
diff
changeset
|
1741 /* response to a standard query */ |
6367 | 1742 if ((flags & 0xf870) != 0x8000 || (trunc && tcp)) { |
1649 | 1743 ngx_log_error(r->log_level, r->log, 0, |
6509
7640d6c213e1
Removed redundant "u" format specifier.
Ruslan Ermilov <ru@nginx.com>
parents:
6478
diff
changeset
|
1744 "invalid %s DNS response %ui fl:%04Xi", |
6367 | 1745 tcp ? "TCP" : "UDP", ident, flags); |
1649 | 1746 return; |
1747 } | |
1748 | |
5470
aebdca7e8f8f
Resolver: fixed response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5469
diff
changeset
|
1749 code = flags & 0xf; |
1649 | 1750 |
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1751 if (code == NGX_RESOLVE_FORMERR) { |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1752 |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1753 times = 0; |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1754 |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1755 for (q = ngx_queue_head(&r->name_resend_queue); |
6347
81d44cd4044e
Resolver: fixed possible segmentation fault on DNS format error.
Roman Arutyunyan <arut@nginx.com>
parents:
6196
diff
changeset
|
1756 q != ngx_queue_sentinel(&r->name_resend_queue) && times++ < 100; |
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1757 q = ngx_queue_next(q)) |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1758 { |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1759 rn = ngx_queue_data(q, ngx_resolver_node_t, queue); |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1760 qident = (rn->query[0] << 8) + rn->query[1]; |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1761 |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1762 if (qident == ident) { |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1763 goto dns_error_name; |
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1764 } |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1765 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1766 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1767 if (rn->query6) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1768 qident6 = (rn->query6[0] << 8) + rn->query6[1]; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1769 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1770 if (qident6 == ident) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1771 goto dns_error_name; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1772 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1773 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1774 #endif |
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1775 } |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1776 |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1777 goto dns_error; |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1778 } |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1779 |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1780 if (code > NGX_RESOLVE_REFUSED) { |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1781 goto dns_error; |
1649 | 1782 } |
1783 | |
1784 if (nqs != 1) { | |
1785 err = "invalid number of questions in DNS response"; | |
1786 goto done; | |
1787 } | |
1788 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1789 i = sizeof(ngx_resolver_hdr_t); |
1649 | 1790 |
1791 while (i < (ngx_uint_t) n) { | |
1792 if (buf[i] == '\0') { | |
1793 goto found; | |
1794 } | |
1795 | |
5470
aebdca7e8f8f
Resolver: fixed response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5469
diff
changeset
|
1796 i += 1 + buf[i]; |
1649 | 1797 } |
1798 | |
1799 goto short_response; | |
1800 | |
1801 found: | |
1802 | |
5470
aebdca7e8f8f
Resolver: fixed response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5469
diff
changeset
|
1803 if (i++ == sizeof(ngx_resolver_hdr_t)) { |
1649 | 1804 err = "zero-length domain name in DNS response"; |
1805 goto done; | |
1806 } | |
1807 | |
1808 if (i + sizeof(ngx_resolver_qs_t) + nan * (2 + sizeof(ngx_resolver_an_t)) | |
1809 > (ngx_uint_t) n) | |
1810 { | |
1811 goto short_response; | |
1812 } | |
1813 | |
1814 qs = (ngx_resolver_qs_t *) &buf[i]; | |
1815 | |
1816 qtype = (qs->type_hi << 8) + qs->type_lo; | |
1817 qclass = (qs->class_hi << 8) + qs->class_lo; | |
1818 | |
1819 ngx_log_debug2(NGX_LOG_DEBUG_CORE, r->log, 0, | |
1967
4a4b15c9c474
use correct ngx_sprintf() formats
Igor Sysoev <igor@sysoev.ru>
parents:
1966
diff
changeset
|
1820 "resolver DNS response qt:%ui cl:%ui", qtype, qclass); |
1649 | 1821 |
1822 if (qclass != 1) { | |
1823 ngx_log_error(r->log_level, r->log, 0, | |
1967
4a4b15c9c474
use correct ngx_sprintf() formats
Igor Sysoev <igor@sysoev.ru>
parents:
1966
diff
changeset
|
1824 "unknown query class %ui in DNS response", qclass); |
1649 | 1825 return; |
1826 } | |
1827 | |
1828 switch (qtype) { | |
1829 | |
1830 case NGX_RESOLVE_A: | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1831 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1832 case NGX_RESOLVE_AAAA: |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1833 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1834 |
6367 | 1835 ngx_resolver_process_a(r, buf, n, ident, code, qtype, nan, trunc, |
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
1836 i + sizeof(ngx_resolver_qs_t)); |
1649 | 1837 |
1838 break; | |
1839 | |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1840 case NGX_RESOLVE_SRV: |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1841 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1842 ngx_resolver_process_srv(r, buf, n, ident, code, nan, trunc, |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1843 i + sizeof(ngx_resolver_qs_t)); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1844 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1845 break; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1846 |
1649 | 1847 case NGX_RESOLVE_PTR: |
1848 | |
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
1849 ngx_resolver_process_ptr(r, buf, n, ident, code, nan); |
1649 | 1850 |
1851 break; | |
1852 | |
1853 default: | |
1854 ngx_log_error(r->log_level, r->log, 0, | |
1967
4a4b15c9c474
use correct ngx_sprintf() formats
Igor Sysoev <igor@sysoev.ru>
parents:
1966
diff
changeset
|
1855 "unknown query type %ui in DNS response", qtype); |
1649 | 1856 return; |
1857 } | |
1858 | |
1859 return; | |
1860 | |
1861 short_response: | |
1862 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1863 err = "short DNS response"; |
1649 | 1864 |
1865 done: | |
1866 | |
1867 ngx_log_error(r->log_level, r->log, 0, err); | |
1868 | |
1869 return; | |
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1870 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1871 dns_error_name: |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1872 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1873 ngx_log_error(r->log_level, r->log, 0, |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1874 "DNS error (%ui: %s), query id:%ui, name:\"%*s\"", |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1875 code, ngx_resolver_strerror(code), ident, |
6478
3ef7bb882ad4
Fixed logging with variable field width.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6460
diff
changeset
|
1876 (size_t) rn->nlen, rn->name); |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1877 return; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1878 |
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1879 dns_error: |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1880 |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1881 ngx_log_error(r->log_level, r->log, 0, |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1882 "DNS error (%ui: %s), query id:%ui", |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1883 code, ngx_resolver_strerror(code), ident); |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1884 return; |
1649 | 1885 } |
1886 | |
1887 | |
1888 static void | |
6370 | 1889 ngx_resolver_process_a(ngx_resolver_t *r, u_char *buf, size_t n, |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1890 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t qtype, |
6367 | 1891 ngx_uint_t nan, ngx_uint_t trunc, ngx_uint_t ans) |
583 | 1892 { |
6367 | 1893 char *err; |
1894 u_char *cname; | |
1895 size_t len; | |
1896 int32_t ttl; | |
1897 uint32_t hash; | |
1898 in_addr_t *addr; | |
1899 ngx_str_t name; | |
6370 | 1900 ngx_uint_t type, class, qident, naddrs, a, i, j, start; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1901 #if (NGX_HAVE_INET6) |
6367 | 1902 struct in6_addr *addr6; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1903 #endif |
6367 | 1904 ngx_resolver_an_t *an; |
1905 ngx_resolver_ctx_t *ctx, *next; | |
1906 ngx_resolver_node_t *rn; | |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
1907 ngx_resolver_addr_t *addrs; |
6367 | 1908 ngx_resolver_connection_t *rec; |
1649 | 1909 |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1910 if (ngx_resolver_copy(r, &name, buf, |
6370 | 1911 buf + sizeof(ngx_resolver_hdr_t), buf + n) |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1912 != NGX_OK) |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1913 { |
1649 | 1914 return; |
1915 } | |
1916 | |
1917 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver qs:%V", &name); | |
1918 | |
1919 hash = ngx_crc32_short(name.data, name.len); | |
1920 | |
1921 /* lock name mutex */ | |
1922 | |
1923 rn = ngx_resolver_lookup_name(r, &name, hash); | |
1924 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1925 if (rn == NULL) { |
1649 | 1926 ngx_log_error(r->log_level, r->log, 0, |
1927 "unexpected response for %V", &name); | |
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1928 ngx_resolver_free(r, name.data); |
1649 | 1929 goto failed; |
1930 } | |
1931 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1932 switch (qtype) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1933 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1934 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1935 case NGX_RESOLVE_AAAA: |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1936 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1937 if (rn->query6 == NULL || rn->naddrs6 != (u_short) -1) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1938 ngx_log_error(r->log_level, r->log, 0, |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1939 "unexpected response for %V", &name); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1940 ngx_resolver_free(r, name.data); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1941 goto failed; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1942 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1943 |
6367 | 1944 if (trunc && rn->tcp6) { |
1945 ngx_resolver_free(r, name.data); | |
1946 goto failed; | |
1947 } | |
1948 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1949 qident = (rn->query6[0] << 8) + rn->query6[1]; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1950 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1951 break; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1952 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1953 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1954 default: /* NGX_RESOLVE_A */ |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1955 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1956 if (rn->query == NULL || rn->naddrs != (u_short) -1) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1957 ngx_log_error(r->log_level, r->log, 0, |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1958 "unexpected response for %V", &name); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1959 ngx_resolver_free(r, name.data); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1960 goto failed; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1961 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1962 |
6367 | 1963 if (trunc && rn->tcp) { |
1964 ngx_resolver_free(r, name.data); | |
1965 goto failed; | |
1966 } | |
1967 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1968 qident = (rn->query[0] << 8) + rn->query[1]; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1969 } |
1649 | 1970 |
1971 if (ident != qident) { | |
1972 ngx_log_error(r->log_level, r->log, 0, | |
1967
4a4b15c9c474
use correct ngx_sprintf() formats
Igor Sysoev <igor@sysoev.ru>
parents:
1966
diff
changeset
|
1973 "wrong ident %ui response for %V, expect %ui", |
1649 | 1974 ident, &name, qident); |
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1975 ngx_resolver_free(r, name.data); |
1649 | 1976 goto failed; |
1977 } | |
1978 | |
3139 | 1979 ngx_resolver_free(r, name.data); |
1980 | |
6367 | 1981 if (trunc) { |
1982 | |
1983 ngx_queue_remove(&rn->queue); | |
1984 | |
1985 if (rn->waiting == NULL) { | |
1986 ngx_rbtree_delete(&r->name_rbtree, &rn->node); | |
1987 ngx_resolver_free_node(r, rn); | |
1988 goto next; | |
1989 } | |
1990 | |
1991 rec = r->connections.elts; | |
1992 rec = &rec[rn->last_connection]; | |
1993 | |
1994 switch (qtype) { | |
1995 | |
1996 #if (NGX_HAVE_INET6) | |
1997 case NGX_RESOLVE_AAAA: | |
1998 | |
1999 rn->tcp6 = 1; | |
2000 | |
2001 (void) ngx_resolver_send_tcp_query(r, rec, rn->query6, rn->qlen); | |
2002 | |
2003 break; | |
2004 #endif | |
2005 | |
2006 default: /* NGX_RESOLVE_A */ | |
2007 | |
2008 rn->tcp = 1; | |
2009 | |
2010 (void) ngx_resolver_send_tcp_query(r, rec, rn->query, rn->qlen); | |
2011 } | |
2012 | |
2013 rn->expire = ngx_time() + r->resend_timeout; | |
2014 | |
2015 ngx_queue_insert_head(&r->name_resend_queue, &rn->queue); | |
2016 | |
2017 goto next; | |
2018 } | |
2019 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2020 if (code == 0 && rn->code) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2021 code = rn->code; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2022 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2023 |
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
2024 if (code == 0 && nan == 0) { |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2025 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2026 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2027 switch (qtype) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2028 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2029 case NGX_RESOLVE_AAAA: |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2030 |
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2031 rn->naddrs6 = 0; |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2032 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2033 if (rn->naddrs == (u_short) -1) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2034 goto next; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2035 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2036 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2037 if (rn->naddrs) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2038 goto export; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2039 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2040 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2041 break; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2042 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2043 default: /* NGX_RESOLVE_A */ |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2044 |
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2045 rn->naddrs = 0; |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2046 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2047 if (rn->naddrs6 == (u_short) -1) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2048 goto next; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2049 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2050 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2051 if (rn->naddrs6) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2052 goto export; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2053 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2054 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2055 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2056 |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2057 code = NGX_RESOLVE_NXDOMAIN; |
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
2058 } |
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
2059 |
1649 | 2060 if (code) { |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2061 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2062 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2063 switch (qtype) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2064 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2065 case NGX_RESOLVE_AAAA: |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2066 |
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2067 rn->naddrs6 = 0; |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2068 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2069 if (rn->naddrs == (u_short) -1) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2070 rn->code = (u_char) code; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2071 goto next; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2072 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2073 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2074 break; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2075 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2076 default: /* NGX_RESOLVE_A */ |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2077 |
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2078 rn->naddrs = 0; |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2079 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2080 if (rn->naddrs6 == (u_short) -1) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2081 rn->code = (u_char) code; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2082 goto next; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2083 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2084 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2085 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2086 |
1649 | 2087 next = rn->waiting; |
2088 rn->waiting = NULL; | |
2089 | |
2090 ngx_queue_remove(&rn->queue); | |
2091 | |
2092 ngx_rbtree_delete(&r->name_rbtree, &rn->node); | |
2093 | |
2094 /* unlock name mutex */ | |
2095 | |
2096 while (next) { | |
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2097 ctx = next; |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2098 ctx->state = code; |
6456
c94aba230a5a
Resolver: introduced valid field in resolver responses.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6372
diff
changeset
|
2099 ctx->valid = ngx_time() + (r->valid ? r->valid : 10); |
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2100 next = ctx->next; |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2101 |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2102 ctx->handler(ctx); |
1649 | 2103 } |
2104 | |
5920
7420068c4d4b
Resolver: fixed use-after-free memory access.
Ruslan Ermilov <ru@nginx.com>
parents:
5820
diff
changeset
|
2105 ngx_resolver_free_node(r, rn); |
7420068c4d4b
Resolver: fixed use-after-free memory access.
Ruslan Ermilov <ru@nginx.com>
parents:
5820
diff
changeset
|
2106 |
1649 | 2107 return; |
2108 } | |
2109 | |
2110 i = ans; | |
2111 naddrs = 0; | |
2112 cname = NULL; | |
2113 | |
2114 for (a = 0; a < nan; a++) { | |
2115 | |
2116 start = i; | |
2117 | |
6370 | 2118 while (i < n) { |
1649 | 2119 |
2120 if (buf[i] & 0xc0) { | |
2121 i += 2; | |
2122 goto found; | |
2123 } | |
2124 | |
2125 if (buf[i] == 0) { | |
2126 i++; | |
2127 goto test_length; | |
2128 } | |
2129 | |
2130 i += 1 + buf[i]; | |
2131 } | |
2132 | |
2133 goto short_response; | |
2134 | |
2135 test_length: | |
2136 | |
2137 if (i - start < 2) { | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2138 err = "invalid name in DNS response"; |
1649 | 2139 goto invalid; |
2140 } | |
2141 | |
2142 found: | |
2143 | |
6370 | 2144 if (i + sizeof(ngx_resolver_an_t) >= n) { |
1649 | 2145 goto short_response; |
2146 } | |
2147 | |
2148 an = (ngx_resolver_an_t *) &buf[i]; | |
2149 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2150 type = (an->type_hi << 8) + an->type_lo; |
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2151 class = (an->class_hi << 8) + an->class_lo; |
1649 | 2152 len = (an->len_hi << 8) + an->len_lo; |
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2153 ttl = (an->ttl[0] << 24) + (an->ttl[1] << 16) |
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2154 + (an->ttl[2] << 8) + (an->ttl[3]); |
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2155 |
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2156 if (class != 1) { |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2157 ngx_log_error(r->log_level, r->log, 0, |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2158 "unexpected RR class %ui", class); |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2159 goto failed; |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2160 } |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2161 |
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2162 if (ttl < 0) { |
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2163 ttl = 0; |
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2164 } |
1649 | 2165 |
5485
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
2166 rn->ttl = ngx_min(rn->ttl, (uint32_t) ttl); |
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
2167 |
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2168 i += sizeof(ngx_resolver_an_t); |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2169 |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2170 switch (type) { |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2171 |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2172 case NGX_RESOLVE_A: |
1649 | 2173 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2174 if (qtype != NGX_RESOLVE_A) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2175 err = "unexpected A record in DNS response"; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2176 goto invalid; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2177 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2178 |
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2179 if (len != 4) { |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2180 err = "invalid A record in DNS response"; |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2181 goto invalid; |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2182 } |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2183 |
6370 | 2184 if (i + 4 > n) { |
1649 | 2185 goto short_response; |
2186 } | |
2187 | |
2188 naddrs++; | |
2189 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2190 break; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2191 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2192 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2193 case NGX_RESOLVE_AAAA: |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2194 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2195 if (qtype != NGX_RESOLVE_AAAA) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2196 err = "unexpected AAAA record in DNS response"; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2197 goto invalid; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2198 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2199 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2200 if (len != 16) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2201 err = "invalid AAAA record in DNS response"; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2202 goto invalid; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2203 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2204 |
6370 | 2205 if (i + 16 > n) { |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2206 goto short_response; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2207 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2208 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2209 naddrs++; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2210 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2211 break; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2212 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2213 |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2214 case NGX_RESOLVE_CNAME: |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2215 |
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2216 cname = &buf[i]; |
1965 | 2217 |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2218 break; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2219 |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2220 case NGX_RESOLVE_DNAME: |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2221 |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2222 break; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2223 |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2224 default: |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2225 |
1966 | 2226 ngx_log_error(r->log_level, r->log, 0, |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2227 "unexpected RR type %ui", type); |
1649 | 2228 } |
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2229 |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2230 i += len; |
1649 | 2231 } |
2232 | |
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2233 ngx_log_debug3(NGX_LOG_DEBUG_CORE, r->log, 0, |
5485
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
2234 "resolver naddrs:%ui cname:%p ttl:%uD", |
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
2235 naddrs, cname, rn->ttl); |
1649 | 2236 |
2237 if (naddrs) { | |
2238 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2239 switch (qtype) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2240 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2241 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2242 case NGX_RESOLVE_AAAA: |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2243 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2244 if (naddrs == 1) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2245 addr6 = &rn->u6.addr6; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2246 rn->naddrs6 = 1; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2247 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2248 } else { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2249 addr6 = ngx_resolver_alloc(r, naddrs * sizeof(struct in6_addr)); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2250 if (addr6 == NULL) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2251 goto failed; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2252 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2253 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2254 rn->u6.addrs6 = addr6; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2255 rn->naddrs6 = (u_short) naddrs; |
1649 | 2256 } |
2257 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2258 #if (NGX_SUPPRESS_WARN) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2259 addr = NULL; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2260 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2261 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2262 break; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2263 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2264 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2265 default: /* NGX_RESOLVE_A */ |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2266 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2267 if (naddrs == 1) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2268 addr = &rn->u.addr; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2269 rn->naddrs = 1; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2270 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2271 } else { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2272 addr = ngx_resolver_alloc(r, naddrs * sizeof(in_addr_t)); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2273 if (addr == NULL) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2274 goto failed; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2275 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2276 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2277 rn->u.addrs = addr; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2278 rn->naddrs = (u_short) naddrs; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2279 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2280 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2281 #if (NGX_HAVE_INET6 && NGX_SUPPRESS_WARN) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2282 addr6 = NULL; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2283 #endif |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2284 } |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2285 |
6370 | 2286 j = 0; |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2287 i = ans; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2288 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2289 for (a = 0; a < nan; a++) { |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2290 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2291 for ( ;; ) { |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2292 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2293 if (buf[i] & 0xc0) { |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2294 i += 2; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2295 break; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2296 } |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2297 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2298 if (buf[i] == 0) { |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2299 i++; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2300 break; |
1649 | 2301 } |
2302 | |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2303 i += 1 + buf[i]; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2304 } |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2305 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2306 an = (ngx_resolver_an_t *) &buf[i]; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2307 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2308 type = (an->type_hi << 8) + an->type_lo; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2309 len = (an->len_hi << 8) + an->len_lo; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2310 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2311 i += sizeof(ngx_resolver_an_t); |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2312 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2313 if (type == NGX_RESOLVE_A) { |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2314 |
6370 | 2315 addr[j] = htonl((buf[i] << 24) + (buf[i + 1] << 16) |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2316 + (buf[i + 2] << 8) + (buf[i + 3])); |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2317 |
6370 | 2318 if (++j == naddrs) { |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2319 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2320 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2321 if (rn->naddrs6 == (u_short) -1) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2322 goto next; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2323 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2324 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2325 |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2326 break; |
1649 | 2327 } |
2328 } | |
2329 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2330 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2331 else if (type == NGX_RESOLVE_AAAA) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2332 |
6370 | 2333 ngx_memcpy(addr6[j].s6_addr, &buf[i], 16); |
2334 | |
2335 if (++j == naddrs) { | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2336 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2337 if (rn->naddrs == (u_short) -1) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2338 goto next; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2339 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2340 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2341 break; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2342 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2343 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2344 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2345 |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2346 i += len; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2347 } |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2348 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2349 |
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2350 switch (qtype) { |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2351 |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2352 #if (NGX_HAVE_INET6) |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2353 case NGX_RESOLVE_AAAA: |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2354 |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2355 if (rn->naddrs6 == (u_short) -1) { |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2356 rn->naddrs6 = 0; |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2357 } |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2358 |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2359 break; |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2360 #endif |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2361 |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2362 default: /* NGX_RESOLVE_A */ |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2363 |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2364 if (rn->naddrs == (u_short) -1) { |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2365 rn->naddrs = 0; |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2366 } |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2367 } |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
2368 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2369 if (rn->naddrs != (u_short) -1 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2370 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2371 && rn->naddrs6 != (u_short) -1 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2372 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2373 && rn->naddrs |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2374 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2375 + rn->naddrs6 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2376 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2377 > 0) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2378 { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2379 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2380 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2381 export: |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2382 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2383 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2384 naddrs = rn->naddrs; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2385 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2386 naddrs += rn->naddrs6; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2387 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2388 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2389 if (naddrs == 1 && rn->naddrs == 1) { |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2390 addrs = NULL; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2391 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2392 } else { |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2393 addrs = ngx_resolver_export(r, rn, 0); |
1649 | 2394 if (addrs == NULL) { |
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2395 goto failed; |
1649 | 2396 } |
2397 } | |
2398 | |
2399 ngx_queue_remove(&rn->queue); | |
2400 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2401 rn->valid = ngx_time() + (r->valid ? r->valid : (time_t) rn->ttl); |
1649 | 2402 rn->expire = ngx_time() + r->expire; |
2403 | |
2404 ngx_queue_insert_head(&r->name_expire_queue, &rn->queue); | |
2405 | |
2406 next = rn->waiting; | |
2407 rn->waiting = NULL; | |
2408 | |
2409 /* unlock name mutex */ | |
2410 | |
2411 while (next) { | |
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2412 ctx = next; |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2413 ctx->state = NGX_OK; |
6456
c94aba230a5a
Resolver: introduced valid field in resolver responses.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6372
diff
changeset
|
2414 ctx->valid = rn->valid; |
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2415 ctx->naddrs = naddrs; |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2416 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2417 if (addrs == NULL) { |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2418 ctx->addrs = &ctx->addr; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2419 ctx->addr.sockaddr = (struct sockaddr *) &ctx->sin; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2420 ctx->addr.socklen = sizeof(struct sockaddr_in); |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2421 ngx_memzero(&ctx->sin, sizeof(struct sockaddr_in)); |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2422 ctx->sin.sin_family = AF_INET; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2423 ctx->sin.sin_addr.s_addr = rn->u.addr; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2424 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2425 } else { |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2426 ctx->addrs = addrs; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2427 } |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2428 |
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2429 next = ctx->next; |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2430 |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2431 ctx->handler(ctx); |
1649 | 2432 } |
2433 | |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2434 if (addrs != NULL) { |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2435 ngx_resolver_free(r, addrs->sockaddr); |
1649 | 2436 ngx_resolver_free(r, addrs); |
2437 } | |
2438 | |
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
2439 ngx_resolver_free(r, rn->query); |
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
2440 rn->query = NULL; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2441 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2442 rn->query6 = NULL; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2443 #endif |
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
2444 |
1649 | 2445 return; |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2446 } |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2447 |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2448 if (cname) { |
1649 | 2449 |
2450 /* CNAME only */ | |
2451 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2452 if (rn->naddrs == (u_short) -1 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2453 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2454 || rn->naddrs6 == (u_short) -1 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2455 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2456 ) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2457 { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2458 goto next; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2459 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2460 |
6370 | 2461 if (ngx_resolver_copy(r, &name, buf, cname, buf + n) != NGX_OK) { |
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2462 goto failed; |
1649 | 2463 } |
2464 | |
2465 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, | |
2466 "resolver cname:\"%V\"", &name); | |
2467 | |
1741
0829024c924d
fix segfault if response will have CNAME only
Igor Sysoev <igor@sysoev.ru>
parents:
1689
diff
changeset
|
2468 ngx_queue_remove(&rn->queue); |
0829024c924d
fix segfault if response will have CNAME only
Igor Sysoev <igor@sysoev.ru>
parents:
1689
diff
changeset
|
2469 |
1649 | 2470 rn->cnlen = (u_short) name.len; |
2471 rn->u.cname = name.data; | |
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2472 |
5485
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
2473 rn->valid = ngx_time() + (r->valid ? r->valid : (time_t) rn->ttl); |
1649 | 2474 rn->expire = ngx_time() + r->expire; |
2475 | |
2476 ngx_queue_insert_head(&r->name_expire_queue, &rn->queue); | |
2477 | |
6352
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2478 ngx_resolver_free(r, rn->query); |
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2479 rn->query = NULL; |
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2480 #if (NGX_HAVE_INET6) |
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2481 rn->query6 = NULL; |
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2482 #endif |
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2483 |
1649 | 2484 ctx = rn->waiting; |
2485 rn->waiting = NULL; | |
2486 | |
2487 if (ctx) { | |
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
2488 |
6352
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2489 if (ctx->recursion++ >= NGX_RESOLVER_MAX_RECURSION) { |
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2490 |
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2491 /* unlock name mutex */ |
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2492 |
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2493 do { |
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2494 ctx->state = NGX_RESOLVE_NXDOMAIN; |
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2495 next = ctx->next; |
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2496 |
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2497 ctx->handler(ctx); |
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2498 |
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2499 ctx = next; |
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2500 } while (ctx); |
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2501 |
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2502 return; |
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2503 } |
ff9b32c0e141
Resolver: limited CNAME recursion.
Ruslan Ermilov <ru@nginx.com>
parents:
6351
diff
changeset
|
2504 |
6351
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
2505 for (next = ctx; next; next = next->next) { |
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
2506 next->node = NULL; |
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
2507 } |
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
2508 |
497d0cff8ace
Resolver: fixed use-after-free memory accesses with CNAME.
Roman Arutyunyan <arut@nginx.com>
parents:
6350
diff
changeset
|
2509 (void) ngx_resolve_name_locked(r, ctx, &name); |
1649 | 2510 } |
2511 | |
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2512 /* unlock name mutex */ |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
2513 |
1649 | 2514 return; |
2515 } | |
2516 | |
2517 ngx_log_error(r->log_level, r->log, 0, | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2518 "no A or CNAME types in DNS response"); |
1649 | 2519 return; |
2520 | |
2521 short_response: | |
2522 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2523 err = "short DNS response"; |
1649 | 2524 |
2525 invalid: | |
2526 | |
2527 /* unlock name mutex */ | |
2528 | |
2529 ngx_log_error(r->log_level, r->log, 0, err); | |
2530 | |
2531 return; | |
2532 | |
2533 failed: | |
2534 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2535 next: |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2536 |
1649 | 2537 /* unlock name mutex */ |
2538 | |
2539 return; | |
2540 } | |
2541 | |
2542 | |
2543 static void | |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2544 ngx_resolver_process_srv(ngx_resolver_t *r, u_char *buf, size_t n, |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2545 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan, |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2546 ngx_uint_t trunc, ngx_uint_t ans) |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2547 { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2548 char *err; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2549 u_char *cname; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2550 size_t len; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2551 int32_t ttl; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2552 uint32_t hash; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2553 ngx_str_t name; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2554 ngx_uint_t type, qident, class, start, nsrvs, a, i, j; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2555 ngx_resolver_an_t *an; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2556 ngx_resolver_ctx_t *ctx, *next; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2557 ngx_resolver_srv_t *srvs; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2558 ngx_resolver_node_t *rn; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2559 ngx_resolver_connection_t *rec; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2560 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2561 if (ngx_resolver_copy(r, &name, buf, |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2562 buf + sizeof(ngx_resolver_hdr_t), buf + n) |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2563 != NGX_OK) |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2564 { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2565 return; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2566 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2567 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2568 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver qs:%V", &name); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2569 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2570 hash = ngx_crc32_short(name.data, name.len); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2571 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2572 rn = ngx_resolver_lookup_srv(r, &name, hash); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2573 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2574 if (rn == NULL || rn->query == NULL) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2575 ngx_log_error(r->log_level, r->log, 0, |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2576 "unexpected response for %V", &name); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2577 ngx_resolver_free(r, name.data); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2578 goto failed; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2579 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2580 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2581 if (trunc && rn->tcp) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2582 ngx_resolver_free(r, name.data); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2583 goto failed; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2584 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2585 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2586 qident = (rn->query[0] << 8) + rn->query[1]; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2587 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2588 if (ident != qident) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2589 ngx_log_error(r->log_level, r->log, 0, |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2590 "wrong ident %ui response for %V, expect %ui", |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2591 ident, &name, qident); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2592 ngx_resolver_free(r, name.data); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2593 goto failed; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2594 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2595 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2596 ngx_resolver_free(r, name.data); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2597 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2598 if (trunc) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2599 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2600 ngx_queue_remove(&rn->queue); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2601 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2602 if (rn->waiting == NULL) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2603 ngx_rbtree_delete(&r->srv_rbtree, &rn->node); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2604 ngx_resolver_free_node(r, rn); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2605 return; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2606 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2607 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2608 rec = r->connections.elts; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2609 rec = &rec[rn->last_connection]; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2610 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2611 rn->tcp = 1; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2612 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2613 (void) ngx_resolver_send_tcp_query(r, rec, rn->query, rn->qlen); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2614 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2615 rn->expire = ngx_time() + r->resend_timeout; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2616 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2617 ngx_queue_insert_head(&r->srv_resend_queue, &rn->queue); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2618 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2619 return; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2620 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2621 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2622 if (code == 0 && rn->code) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2623 code = rn->code; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2624 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2625 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2626 if (code == 0 && nan == 0) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2627 code = NGX_RESOLVE_NXDOMAIN; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2628 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2629 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2630 if (code) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2631 next = rn->waiting; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2632 rn->waiting = NULL; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2633 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2634 ngx_queue_remove(&rn->queue); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2635 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2636 ngx_rbtree_delete(&r->srv_rbtree, &rn->node); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2637 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2638 while (next) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2639 ctx = next; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2640 ctx->state = code; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2641 ctx->valid = ngx_time() + (r->valid ? r->valid : 10); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2642 next = ctx->next; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2643 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2644 ctx->handler(ctx); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2645 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2646 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2647 ngx_resolver_free_node(r, rn); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2648 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2649 return; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2650 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2651 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2652 i = ans; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2653 nsrvs = 0; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2654 cname = NULL; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2655 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2656 for (a = 0; a < nan; a++) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2657 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2658 start = i; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2659 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2660 while (i < n) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2661 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2662 if (buf[i] & 0xc0) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2663 i += 2; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2664 goto found; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2665 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2666 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2667 if (buf[i] == 0) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2668 i++; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2669 goto test_length; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2670 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2671 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2672 i += 1 + buf[i]; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2673 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2674 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2675 goto short_response; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2676 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2677 test_length: |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2678 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2679 if (i - start < 2) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2680 err = "invalid name DNS response"; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2681 goto invalid; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2682 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2683 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2684 found: |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2685 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2686 if (i + sizeof(ngx_resolver_an_t) >= n) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2687 goto short_response; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2688 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2689 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2690 an = (ngx_resolver_an_t *) &buf[i]; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2691 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2692 type = (an->type_hi << 8) + an->type_lo; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2693 class = (an->class_hi << 8) + an->class_lo; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2694 len = (an->len_hi << 8) + an->len_lo; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2695 ttl = (an->ttl[0] << 24) + (an->ttl[1] << 16) |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2696 + (an->ttl[2] << 8) + (an->ttl[3]); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2697 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2698 if (class != 1) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2699 ngx_log_error(r->log_level, r->log, 0, |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2700 "unexpected RR class %ui", class); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2701 goto failed; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2702 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2703 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2704 if (ttl < 0) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2705 ttl = 0; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2706 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2707 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2708 rn->ttl = ngx_min(rn->ttl, (uint32_t) ttl); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2709 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2710 i += sizeof(ngx_resolver_an_t); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2711 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2712 switch (type) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2713 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2714 case NGX_RESOLVE_SRV: |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2715 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2716 if (i + 6 > n) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2717 goto short_response; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2718 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2719 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2720 if (ngx_resolver_copy(r, NULL, buf, &buf[i + 6], buf + n) |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2721 != NGX_OK) |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2722 { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2723 goto failed; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2724 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2725 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2726 nsrvs++; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2727 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2728 break; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2729 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2730 case NGX_RESOLVE_CNAME: |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2731 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2732 cname = &buf[i]; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2733 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2734 break; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2735 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2736 case NGX_RESOLVE_DNAME: |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2737 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2738 break; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2739 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2740 default: |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2741 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2742 ngx_log_error(r->log_level, r->log, 0, |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2743 "unexpected RR type %ui", type); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2744 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2745 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2746 i += len; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2747 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2748 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2749 ngx_log_debug3(NGX_LOG_DEBUG_CORE, r->log, 0, |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2750 "resolver nsrvs:%ui cname:%p ttl:%uD", |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2751 nsrvs, cname, rn->ttl); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2752 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2753 if (nsrvs) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2754 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2755 srvs = ngx_resolver_calloc(r, nsrvs * sizeof(ngx_resolver_srv_t)); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2756 if (srvs == NULL) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2757 goto failed; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2758 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2759 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2760 rn->u.srvs = srvs; |
6460
034329824dd3
Win32: fixed build after 384154fc634f.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6458
diff
changeset
|
2761 rn->nsrvs = (u_short) nsrvs; |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2762 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2763 j = 0; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2764 i = ans; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2765 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2766 for (a = 0; a < nan; a++) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2767 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2768 for ( ;; ) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2769 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2770 if (buf[i] & 0xc0) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2771 i += 2; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2772 break; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2773 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2774 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2775 if (buf[i] == 0) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2776 i++; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2777 break; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2778 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2779 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2780 i += 1 + buf[i]; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2781 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2782 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2783 an = (ngx_resolver_an_t *) &buf[i]; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2784 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2785 type = (an->type_hi << 8) + an->type_lo; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2786 len = (an->len_hi << 8) + an->len_lo; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2787 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2788 i += sizeof(ngx_resolver_an_t); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2789 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2790 if (type == NGX_RESOLVE_SRV) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2791 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2792 srvs[j].priority = (buf[i] << 8) + buf[i + 1]; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2793 srvs[j].weight = (buf[i + 2] << 8) + buf[i + 3]; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2794 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2795 if (srvs[j].weight == 0) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2796 srvs[j].weight = 1; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2797 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2798 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2799 srvs[j].port = (buf[i + 4] << 8) + buf[i + 5]; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2800 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2801 if (ngx_resolver_copy(r, &srvs[j].name, buf, &buf[i + 6], |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2802 buf + n) |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2803 != NGX_OK) |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2804 { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2805 goto failed; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2806 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2807 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2808 j++; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2809 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2810 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2811 i += len; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2812 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2813 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2814 ngx_sort(srvs, nsrvs, sizeof(ngx_resolver_srv_t), |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2815 ngx_resolver_cmp_srvs); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2816 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2817 ngx_resolver_free(r, rn->query); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2818 rn->query = NULL; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2819 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2820 ngx_queue_remove(&rn->queue); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2821 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2822 rn->valid = ngx_time() + (r->valid ? r->valid : (time_t) rn->ttl); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2823 rn->expire = ngx_time() + r->expire; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2824 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2825 ngx_queue_insert_head(&r->srv_expire_queue, &rn->queue); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2826 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2827 next = rn->waiting; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2828 rn->waiting = NULL; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2829 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2830 while (next) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2831 ctx = next; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2832 next = ctx->next; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2833 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2834 ngx_resolver_resolve_srv_names(ctx, rn); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2835 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2836 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2837 return; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2838 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2839 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2840 rn->nsrvs = 0; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2841 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2842 if (cname) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2843 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2844 /* CNAME only */ |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2845 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2846 if (ngx_resolver_copy(r, &name, buf, cname, buf + n) != NGX_OK) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2847 goto failed; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2848 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2849 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2850 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2851 "resolver cname:\"%V\"", &name); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2852 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2853 ngx_queue_remove(&rn->queue); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2854 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2855 rn->cnlen = (u_short) name.len; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2856 rn->u.cname = name.data; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2857 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2858 rn->valid = ngx_time() + (r->valid ? r->valid : (time_t) rn->ttl); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2859 rn->expire = ngx_time() + r->expire; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2860 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2861 ngx_queue_insert_head(&r->srv_expire_queue, &rn->queue); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2862 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2863 ngx_resolver_free(r, rn->query); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2864 rn->query = NULL; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2865 #if (NGX_HAVE_INET6) |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2866 rn->query6 = NULL; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2867 #endif |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2868 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2869 ctx = rn->waiting; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2870 rn->waiting = NULL; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2871 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2872 if (ctx) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2873 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2874 if (ctx->recursion++ >= NGX_RESOLVER_MAX_RECURSION) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2875 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2876 /* unlock name mutex */ |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2877 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2878 do { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2879 ctx->state = NGX_RESOLVE_NXDOMAIN; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2880 next = ctx->next; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2881 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2882 ctx->handler(ctx); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2883 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2884 ctx = next; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2885 } while (ctx); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2886 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2887 return; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2888 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2889 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2890 for (next = ctx; next; next = next->next) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2891 next->node = NULL; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2892 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2893 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2894 (void) ngx_resolve_name_locked(r, ctx, &name); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2895 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2896 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2897 /* unlock name mutex */ |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2898 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2899 return; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2900 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2901 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2902 ngx_log_error(r->log_level, r->log, 0, "no SRV type in DNS response"); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2903 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2904 return; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2905 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2906 short_response: |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2907 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2908 err = "short DNS response"; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2909 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2910 invalid: |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2911 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2912 /* unlock name mutex */ |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2913 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2914 ngx_log_error(r->log_level, r->log, 0, err); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2915 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2916 return; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2917 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2918 failed: |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2919 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2920 /* unlock name mutex */ |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2921 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2922 return; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2923 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2924 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2925 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2926 static void |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2927 ngx_resolver_resolve_srv_names(ngx_resolver_ctx_t *ctx, ngx_resolver_node_t *rn) |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2928 { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2929 ngx_uint_t i; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2930 ngx_resolver_t *r; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2931 ngx_resolver_ctx_t *cctx; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2932 ngx_resolver_srv_name_t *srvs; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2933 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2934 r = ctx->resolver; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2935 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2936 ctx->node = NULL; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2937 ctx->state = NGX_OK; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2938 ctx->valid = rn->valid; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2939 ctx->count = rn->nsrvs; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2940 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2941 srvs = ngx_resolver_calloc(r, rn->nsrvs * sizeof(ngx_resolver_srv_name_t)); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2942 if (srvs == NULL) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2943 goto failed; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2944 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2945 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2946 ctx->srvs = srvs; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2947 ctx->nsrvs = rn->nsrvs; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2948 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2949 for (i = 0; i < rn->nsrvs; i++) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2950 srvs[i].name.data = ngx_resolver_alloc(r, rn->u.srvs[i].name.len); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2951 if (srvs[i].name.data == NULL) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2952 goto failed; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2953 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2954 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2955 srvs[i].name.len = rn->u.srvs[i].name.len; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2956 ngx_memcpy(srvs[i].name.data, rn->u.srvs[i].name.data, |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2957 srvs[i].name.len); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2958 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2959 cctx = ngx_resolve_start(r, NULL); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2960 if (cctx == NULL) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2961 goto failed; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2962 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2963 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2964 cctx->name = srvs[i].name; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2965 cctx->handler = ngx_resolver_srv_names_handler; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2966 cctx->data = ctx; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2967 cctx->srvs = &srvs[i]; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2968 cctx->timeout = 0; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2969 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2970 srvs[i].priority = rn->u.srvs[i].priority; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2971 srvs[i].weight = rn->u.srvs[i].weight; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2972 srvs[i].port = rn->u.srvs[i].port; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2973 srvs[i].ctx = cctx; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2974 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2975 if (ngx_resolve_name(cctx) == NGX_ERROR) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2976 srvs[i].ctx = NULL; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2977 goto failed; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2978 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2979 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2980 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2981 return; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2982 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2983 failed: |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2984 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2985 ctx->state = NGX_ERROR; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2986 ctx->valid = ngx_time() + (r->valid ? r->valid : 10); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2987 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2988 ctx->handler(ctx); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2989 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2990 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2991 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2992 static void |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2993 ngx_resolver_srv_names_handler(ngx_resolver_ctx_t *cctx) |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
2994 { |
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
2995 ngx_uint_t i; |
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
2996 ngx_addr_t *addrs; |
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
2997 ngx_resolver_t *r; |
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
2998 ngx_sockaddr_t *sockaddr; |
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
2999 ngx_resolver_ctx_t *ctx; |
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
3000 ngx_resolver_srv_name_t *srv; |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3001 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3002 r = cctx->resolver; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3003 ctx = cctx->data; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3004 srv = cctx->srvs; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3005 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3006 ctx->count--; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3007 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3008 srv->ctx = NULL; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3009 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3010 if (cctx->naddrs) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3011 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3012 ctx->valid = ngx_min(ctx->valid, cctx->valid); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3013 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3014 addrs = ngx_resolver_calloc(r, cctx->naddrs * sizeof(ngx_addr_t)); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3015 if (addrs == NULL) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3016 ngx_resolve_name_done(cctx); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3017 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3018 ctx->state = NGX_ERROR; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3019 ctx->valid = ngx_time() + (r->valid ? r->valid : 10); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3020 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3021 ctx->handler(ctx); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3022 return; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3023 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3024 |
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
3025 sockaddr = ngx_resolver_alloc(r, cctx->naddrs * sizeof(ngx_sockaddr_t)); |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3026 if (sockaddr == NULL) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3027 ngx_resolver_free(r, addrs); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3028 ngx_resolve_name_done(cctx); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3029 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3030 ctx->state = NGX_ERROR; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3031 ctx->valid = ngx_time() + (r->valid ? r->valid : 10); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3032 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3033 ctx->handler(ctx); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3034 return; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3035 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3036 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3037 for (i = 0; i < cctx->naddrs; i++) { |
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
3038 addrs[i].sockaddr = &sockaddr[i].sockaddr; |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3039 addrs[i].socklen = cctx->addrs[i].socklen; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3040 |
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
3041 ngx_memcpy(&sockaddr[i], cctx->addrs[i].sockaddr, |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3042 addrs[i].socklen); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3043 |
6593
b3b7e33083ac
Introduced ngx_inet_get_port() and ngx_inet_set_port() functions.
Roman Arutyunyan <arut@nginx.com>
parents:
6559
diff
changeset
|
3044 ngx_inet_set_port(addrs[i].sockaddr, srv->port); |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3045 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3046 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3047 srv->addrs = addrs; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3048 srv->naddrs = cctx->naddrs; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3049 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3050 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3051 ngx_resolve_name_done(cctx); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3052 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3053 if (ctx->count == 0) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3054 ngx_resolver_report_srv(r, ctx); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3055 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3056 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3057 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3058 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3059 static void |
1649 | 3060 ngx_resolver_process_ptr(ngx_resolver_t *r, u_char *buf, size_t n, |
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
3061 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan) |
1649 | 3062 { |
3063 char *err; | |
3064 size_t len; | |
3065 in_addr_t addr; | |
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
3066 int32_t ttl; |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3067 ngx_int_t octet; |
1649 | 3068 ngx_str_t name; |
6371
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3069 ngx_uint_t mask, type, class, qident, a, i, start; |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3070 ngx_queue_t *expire_queue; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3071 ngx_rbtree_t *tree; |
1649 | 3072 ngx_resolver_an_t *an; |
3073 ngx_resolver_ctx_t *ctx, *next; | |
3074 ngx_resolver_node_t *rn; | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3075 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3076 uint32_t hash; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3077 ngx_int_t digit; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3078 struct in6_addr addr6; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3079 #endif |
1649 | 3080 |
6372 | 3081 if (ngx_resolver_copy(r, &name, buf, |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3082 buf + sizeof(ngx_resolver_hdr_t), buf + n) |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3083 != NGX_OK) |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3084 { |
5472
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
3085 return; |
1649 | 3086 } |
3087 | |
6372 | 3088 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver qs:%V", &name); |
3089 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3090 /* AF_INET */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3091 |
1649 | 3092 addr = 0; |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3093 i = sizeof(ngx_resolver_hdr_t); |
1649 | 3094 |
3095 for (mask = 0; mask < 32; mask += 8) { | |
3096 len = buf[i++]; | |
3097 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3098 octet = ngx_atoi(&buf[i], len); |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3099 if (octet == NGX_ERROR || octet > 255) { |
1649 | 3100 goto invalid_in_addr_arpa; |
3101 } | |
3102 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3103 addr += octet << mask; |
1649 | 3104 i += len; |
3105 } | |
3106 | |
5479
c0d6eae5a1c5
Resolver: lookups are case-insensitive.
Ruslan Ermilov <ru@nginx.com>
parents:
5478
diff
changeset
|
3107 if (ngx_strcasecmp(&buf[i], (u_char *) "\7in-addr\4arpa") == 0) { |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3108 i += sizeof("\7in-addr\4arpa"); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3109 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3110 /* lock addr mutex */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3111 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3112 rn = ngx_resolver_lookup_addr(r, addr); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3113 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3114 tree = &r->addr_rbtree; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3115 expire_queue = &r->addr_expire_queue; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3116 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3117 goto valid; |
1649 | 3118 } |
3119 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3120 invalid_in_addr_arpa: |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3121 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3122 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3123 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3124 i = sizeof(ngx_resolver_hdr_t); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3125 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3126 for (octet = 15; octet >= 0; octet--) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3127 if (buf[i++] != '\1') { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3128 goto invalid_ip6_arpa; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3129 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3130 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3131 digit = ngx_hextoi(&buf[i++], 1); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3132 if (digit == NGX_ERROR) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3133 goto invalid_ip6_arpa; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3134 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3135 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3136 addr6.s6_addr[octet] = (u_char) digit; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3137 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3138 if (buf[i++] != '\1') { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3139 goto invalid_ip6_arpa; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3140 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3141 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3142 digit = ngx_hextoi(&buf[i++], 1); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3143 if (digit == NGX_ERROR) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3144 goto invalid_ip6_arpa; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3145 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3146 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3147 addr6.s6_addr[octet] += (u_char) (digit * 16); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3148 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3149 |
5479
c0d6eae5a1c5
Resolver: lookups are case-insensitive.
Ruslan Ermilov <ru@nginx.com>
parents:
5478
diff
changeset
|
3150 if (ngx_strcasecmp(&buf[i], (u_char *) "\3ip6\4arpa") == 0) { |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3151 i += sizeof("\3ip6\4arpa"); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3152 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3153 /* lock addr mutex */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3154 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3155 hash = ngx_crc32_short(addr6.s6_addr, 16); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3156 rn = ngx_resolver_lookup_addr6(r, &addr6, hash); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3157 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3158 tree = &r->addr6_rbtree; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3159 expire_queue = &r->addr6_expire_queue; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3160 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3161 goto valid; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3162 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3163 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3164 invalid_ip6_arpa: |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3165 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3166 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3167 ngx_log_error(r->log_level, r->log, 0, |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3168 "invalid in-addr.arpa or ip6.arpa name in DNS response"); |
6372 | 3169 ngx_resolver_free(r, name.data); |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3170 return; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3171 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3172 valid: |
1649 | 3173 |
3174 if (rn == NULL || rn->query == NULL) { | |
3175 ngx_log_error(r->log_level, r->log, 0, | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3176 "unexpected response for %V", &name); |
6372 | 3177 ngx_resolver_free(r, name.data); |
1649 | 3178 goto failed; |
3179 } | |
3180 | |
3181 qident = (rn->query[0] << 8) + rn->query[1]; | |
3182 | |
3183 if (ident != qident) { | |
3184 ngx_log_error(r->log_level, r->log, 0, | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3185 "wrong ident %ui response for %V, expect %ui", |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3186 ident, &name, qident); |
6372 | 3187 ngx_resolver_free(r, name.data); |
1649 | 3188 goto failed; |
3189 } | |
3190 | |
6372 | 3191 ngx_resolver_free(r, name.data); |
3192 | |
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
3193 if (code == 0 && nan == 0) { |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3194 code = NGX_RESOLVE_NXDOMAIN; |
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
3195 } |
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
3196 |
1649 | 3197 if (code) { |
3198 next = rn->waiting; | |
3199 rn->waiting = NULL; | |
3200 | |
3201 ngx_queue_remove(&rn->queue); | |
3202 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3203 ngx_rbtree_delete(tree, &rn->node); |
1649 | 3204 |
3205 /* unlock addr mutex */ | |
3206 | |
3207 while (next) { | |
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3208 ctx = next; |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3209 ctx->state = code; |
6456
c94aba230a5a
Resolver: introduced valid field in resolver responses.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6372
diff
changeset
|
3210 ctx->valid = ngx_time() + (r->valid ? r->valid : 10); |
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3211 next = ctx->next; |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3212 |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3213 ctx->handler(ctx); |
1649 | 3214 } |
3215 | |
5920
7420068c4d4b
Resolver: fixed use-after-free memory access.
Ruslan Ermilov <ru@nginx.com>
parents:
5820
diff
changeset
|
3216 ngx_resolver_free_node(r, rn); |
7420068c4d4b
Resolver: fixed use-after-free memory access.
Ruslan Ermilov <ru@nginx.com>
parents:
5820
diff
changeset
|
3217 |
1649 | 3218 return; |
3219 } | |
3220 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3221 i += sizeof(ngx_resolver_qs_t); |
1649 | 3222 |
6371
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3223 for (a = 0; a < nan; a++) { |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3224 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3225 start = i; |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3226 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3227 while (i < n) { |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3228 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3229 if (buf[i] & 0xc0) { |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3230 i += 2; |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3231 goto found; |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3232 } |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3233 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3234 if (buf[i] == 0) { |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3235 i++; |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3236 goto test_length; |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3237 } |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3238 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3239 i += 1 + buf[i]; |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3240 } |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3241 |
1649 | 3242 goto short_response; |
6371
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3243 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3244 test_length: |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3245 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3246 if (i - start < 2) { |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3247 err = "invalid name in DNS response"; |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3248 goto invalid; |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3249 } |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3250 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3251 found: |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3252 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3253 if (i + sizeof(ngx_resolver_an_t) >= n) { |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3254 goto short_response; |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3255 } |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3256 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3257 an = (ngx_resolver_an_t *) &buf[i]; |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3258 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3259 type = (an->type_hi << 8) + an->type_lo; |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3260 class = (an->class_hi << 8) + an->class_lo; |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3261 len = (an->len_hi << 8) + an->len_lo; |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3262 ttl = (an->ttl[0] << 24) + (an->ttl[1] << 16) |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3263 + (an->ttl[2] << 8) + (an->ttl[3]); |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3264 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3265 if (class != 1) { |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3266 ngx_log_error(r->log_level, r->log, 0, |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3267 "unexpected RR class %ui", class); |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3268 goto failed; |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3269 } |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3270 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3271 if (ttl < 0) { |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3272 ttl = 0; |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3273 } |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3274 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3275 ngx_log_debug3(NGX_LOG_DEBUG_CORE, r->log, 0, |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3276 "resolver qt:%ui cl:%ui len:%uz", |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3277 type, class, len); |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3278 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3279 i += sizeof(ngx_resolver_an_t); |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3280 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3281 switch (type) { |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3282 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3283 case NGX_RESOLVE_PTR: |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3284 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3285 goto ptr; |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3286 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3287 case NGX_RESOLVE_CNAME: |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3288 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3289 break; |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3290 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3291 default: |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3292 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3293 ngx_log_error(r->log_level, r->log, 0, |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3294 "unexpected RR type %ui", type); |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3295 } |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3296 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3297 i += len; |
1649 | 3298 } |
3299 | |
6371
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3300 /* unlock addr mutex */ |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3301 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3302 ngx_log_error(r->log_level, r->log, 0, |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3303 "no PTR type in DNS response"); |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3304 return; |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3305 |
33c4d319f08f
Resolver: improved PTR response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
6370
diff
changeset
|
3306 ptr: |
1649 | 3307 |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3308 if (ngx_resolver_copy(r, &name, buf, buf + i, buf + n) != NGX_OK) { |
5472
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
3309 goto failed; |
1649 | 3310 } |
3311 | |
3312 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver an:%V", &name); | |
3313 | |
2486
8de5dc3e7001
use length of uncompressed name
Igor Sysoev <igor@sysoev.ru>
parents:
2484
diff
changeset
|
3314 if (name.len != (size_t) rn->nlen |
8de5dc3e7001
use length of uncompressed name
Igor Sysoev <igor@sysoev.ru>
parents:
2484
diff
changeset
|
3315 || ngx_strncmp(name.data, rn->name, name.len) != 0) |
1649 | 3316 { |
2482
30ec8c5ac75b
fix reverse resolving cache: it stored zero length names
Igor Sysoev <igor@sysoev.ru>
parents:
2314
diff
changeset
|
3317 if (rn->nlen) { |
30ec8c5ac75b
fix reverse resolving cache: it stored zero length names
Igor Sysoev <igor@sysoev.ru>
parents:
2314
diff
changeset
|
3318 ngx_resolver_free(r, rn->name); |
30ec8c5ac75b
fix reverse resolving cache: it stored zero length names
Igor Sysoev <igor@sysoev.ru>
parents:
2314
diff
changeset
|
3319 } |
30ec8c5ac75b
fix reverse resolving cache: it stored zero length names
Igor Sysoev <igor@sysoev.ru>
parents:
2314
diff
changeset
|
3320 |
2490
1c87647b7ca5
fix building by msvc, introduced in r2487
Igor Sysoev <igor@sysoev.ru>
parents:
2487
diff
changeset
|
3321 rn->nlen = (u_short) name.len; |
1649 | 3322 rn->name = name.data; |
3323 | |
2486
8de5dc3e7001
use length of uncompressed name
Igor Sysoev <igor@sysoev.ru>
parents:
2484
diff
changeset
|
3324 name.data = ngx_resolver_dup(r, rn->name, name.len); |
1649 | 3325 if (name.data == NULL) { |
3326 goto failed; | |
3327 } | |
3328 } | |
3329 | |
3330 ngx_queue_remove(&rn->queue); | |
3331 | |
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
3332 rn->valid = ngx_time() + (r->valid ? r->valid : ttl); |
1649 | 3333 rn->expire = ngx_time() + r->expire; |
3334 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3335 ngx_queue_insert_head(expire_queue, &rn->queue); |
1649 | 3336 |
3337 next = rn->waiting; | |
3338 rn->waiting = NULL; | |
3339 | |
3340 /* unlock addr mutex */ | |
3341 | |
3342 while (next) { | |
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3343 ctx = next; |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3344 ctx->state = NGX_OK; |
6456
c94aba230a5a
Resolver: introduced valid field in resolver responses.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6372
diff
changeset
|
3345 ctx->valid = rn->valid; |
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3346 ctx->name = name; |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3347 next = ctx->next; |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3348 |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
3349 ctx->handler(ctx); |
1649 | 3350 } |
3351 | |
3352 ngx_resolver_free(r, name.data); | |
3353 | |
3354 return; | |
3355 | |
3356 short_response: | |
3357 | |
3358 err = "short DNS response"; | |
3359 | |
3360 invalid: | |
3361 | |
3362 /* unlock addr mutex */ | |
3363 | |
3364 ngx_log_error(r->log_level, r->log, 0, err); | |
3365 | |
3366 return; | |
3367 | |
3368 failed: | |
3369 | |
3370 /* unlock addr mutex */ | |
3371 | |
3372 return; | |
3373 } | |
3374 | |
3375 | |
3376 static ngx_resolver_node_t * | |
3377 ngx_resolver_lookup_name(ngx_resolver_t *r, ngx_str_t *name, uint32_t hash) | |
3378 { | |
3379 ngx_int_t rc; | |
3380 ngx_rbtree_node_t *node, *sentinel; | |
3381 ngx_resolver_node_t *rn; | |
3382 | |
3383 node = r->name_rbtree.root; | |
3384 sentinel = r->name_rbtree.sentinel; | |
3385 | |
3386 while (node != sentinel) { | |
3387 | |
3388 if (hash < node->key) { | |
3389 node = node->left; | |
3390 continue; | |
3391 } | |
3392 | |
3393 if (hash > node->key) { | |
3394 node = node->right; | |
3395 continue; | |
3396 } | |
3397 | |
3398 /* hash == node->key */ | |
3399 | |
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
3400 rn = ngx_resolver_node(node); |
4497
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
3401 |
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
3402 rc = ngx_memn2cmp(name->data, rn->name, name->len, rn->nlen); |
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
3403 |
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
3404 if (rc == 0) { |
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
3405 return rn; |
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
3406 } |
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
3407 |
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
3408 node = (rc < 0) ? node->left : node->right; |
1649 | 3409 } |
3410 | |
3411 /* not found */ | |
3412 | |
3413 return NULL; | |
3414 } | |
3415 | |
3416 | |
3417 static ngx_resolver_node_t * | |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3418 ngx_resolver_lookup_srv(ngx_resolver_t *r, ngx_str_t *name, uint32_t hash) |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3419 { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3420 ngx_int_t rc; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3421 ngx_rbtree_node_t *node, *sentinel; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3422 ngx_resolver_node_t *rn; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3423 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3424 node = r->srv_rbtree.root; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3425 sentinel = r->srv_rbtree.sentinel; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3426 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3427 while (node != sentinel) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3428 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3429 if (hash < node->key) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3430 node = node->left; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3431 continue; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3432 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3433 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3434 if (hash > node->key) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3435 node = node->right; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3436 continue; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3437 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3438 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3439 /* hash == node->key */ |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3440 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3441 rn = ngx_resolver_node(node); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3442 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3443 rc = ngx_memn2cmp(name->data, rn->name, name->len, rn->nlen); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3444 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3445 if (rc == 0) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3446 return rn; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3447 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3448 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3449 node = (rc < 0) ? node->left : node->right; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3450 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3451 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3452 /* not found */ |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3453 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3454 return NULL; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3455 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3456 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3457 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3458 static ngx_resolver_node_t * |
1649 | 3459 ngx_resolver_lookup_addr(ngx_resolver_t *r, in_addr_t addr) |
3460 { | |
3461 ngx_rbtree_node_t *node, *sentinel; | |
3462 | |
3463 node = r->addr_rbtree.root; | |
3464 sentinel = r->addr_rbtree.sentinel; | |
3465 | |
3466 while (node != sentinel) { | |
3467 | |
3468 if (addr < node->key) { | |
3469 node = node->left; | |
3470 continue; | |
3471 } | |
3472 | |
3473 if (addr > node->key) { | |
3474 node = node->right; | |
3475 continue; | |
3476 } | |
3477 | |
3478 /* addr == node->key */ | |
3479 | |
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
3480 return ngx_resolver_node(node); |
1649 | 3481 } |
3482 | |
3483 /* not found */ | |
3484 | |
3485 return NULL; | |
3486 } | |
3487 | |
3488 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3489 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3490 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3491 static ngx_resolver_node_t * |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3492 ngx_resolver_lookup_addr6(ngx_resolver_t *r, struct in6_addr *addr, |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3493 uint32_t hash) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3494 { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3495 ngx_int_t rc; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3496 ngx_rbtree_node_t *node, *sentinel; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3497 ngx_resolver_node_t *rn; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3498 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3499 node = r->addr6_rbtree.root; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3500 sentinel = r->addr6_rbtree.sentinel; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3501 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3502 while (node != sentinel) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3503 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3504 if (hash < node->key) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3505 node = node->left; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3506 continue; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3507 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3508 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3509 if (hash > node->key) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3510 node = node->right; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3511 continue; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3512 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3513 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3514 /* hash == node->key */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3515 |
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
3516 rn = ngx_resolver_node(node); |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3517 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3518 rc = ngx_memcmp(addr, &rn->addr6, 16); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3519 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3520 if (rc == 0) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3521 return rn; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3522 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3523 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3524 node = (rc < 0) ? node->left : node->right; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3525 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3526 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3527 /* not found */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3528 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3529 return NULL; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3530 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3531 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3532 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3533 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3534 |
1649 | 3535 static void |
3536 ngx_resolver_rbtree_insert_value(ngx_rbtree_node_t *temp, | |
3537 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel) | |
3538 { | |
3539 ngx_rbtree_node_t **p; | |
3540 ngx_resolver_node_t *rn, *rn_temp; | |
3541 | |
3542 for ( ;; ) { | |
3543 | |
3544 if (node->key < temp->key) { | |
3545 | |
3546 p = &temp->left; | |
3547 | |
3548 } else if (node->key > temp->key) { | |
3549 | |
3550 p = &temp->right; | |
3551 | |
3552 } else { /* node->key == temp->key */ | |
3553 | |
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
3554 rn = ngx_resolver_node(node); |
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
3555 rn_temp = ngx_resolver_node(temp); |
1649 | 3556 |
3143
ab6258e18099
fix resolver cache rbtree comparison
Igor Sysoev <igor@sysoev.ru>
parents:
3139
diff
changeset
|
3557 p = (ngx_memn2cmp(rn->name, rn_temp->name, rn->nlen, rn_temp->nlen) |
ab6258e18099
fix resolver cache rbtree comparison
Igor Sysoev <igor@sysoev.ru>
parents:
3139
diff
changeset
|
3558 < 0) ? &temp->left : &temp->right; |
1649 | 3559 } |
3560 | |
3561 if (*p == sentinel) { | |
3562 break; | |
3563 } | |
3564 | |
3565 temp = *p; | |
3566 } | |
3567 | |
3568 *p = node; | |
3569 node->parent = temp; | |
3570 node->left = sentinel; | |
3571 node->right = sentinel; | |
3572 ngx_rbt_red(node); | |
3573 } | |
3574 | |
3575 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3576 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3577 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3578 static void |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3579 ngx_resolver_rbtree_insert_addr6_value(ngx_rbtree_node_t *temp, |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3580 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3581 { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3582 ngx_rbtree_node_t **p; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3583 ngx_resolver_node_t *rn, *rn_temp; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3584 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3585 for ( ;; ) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3586 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3587 if (node->key < temp->key) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3588 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3589 p = &temp->left; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3590 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3591 } else if (node->key > temp->key) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3592 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3593 p = &temp->right; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3594 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3595 } else { /* node->key == temp->key */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3596 |
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
3597 rn = ngx_resolver_node(node); |
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
3598 rn_temp = ngx_resolver_node(temp); |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3599 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3600 p = (ngx_memcmp(&rn->addr6, &rn_temp->addr6, 16) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3601 < 0) ? &temp->left : &temp->right; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3602 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3603 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3604 if (*p == sentinel) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3605 break; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3606 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3607 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3608 temp = *p; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3609 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3610 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3611 *p = node; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3612 node->parent = temp; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3613 node->left = sentinel; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3614 node->right = sentinel; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3615 ngx_rbt_red(node); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3616 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3617 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3618 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3619 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3620 |
1649 | 3621 static ngx_int_t |
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3622 ngx_resolver_create_name_query(ngx_resolver_t *r, ngx_resolver_node_t *rn, |
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3623 ngx_str_t *name) |
1649 | 3624 { |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3625 u_char *p, *s; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3626 size_t len, nlen; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3627 ngx_uint_t ident; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3628 ngx_resolver_qs_t *qs; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3629 ngx_resolver_hdr_t *query; |
1649 | 3630 |
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3631 nlen = name->len ? (1 + name->len + 1) : 1; |
3306
61bdaac6c668
fix resolving an empty name (".")
Igor Sysoev <igor@sysoev.ru>
parents:
3299
diff
changeset
|
3632 |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3633 len = sizeof(ngx_resolver_hdr_t) + nlen + sizeof(ngx_resolver_qs_t); |
1649 | 3634 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3635 #if (NGX_HAVE_INET6) |
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3636 p = ngx_resolver_alloc(r, r->ipv6 ? len * 2 : len); |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3637 #else |
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3638 p = ngx_resolver_alloc(r, len); |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3639 #endif |
1649 | 3640 if (p == NULL) { |
3641 return NGX_ERROR; | |
3642 } | |
3643 | |
3644 rn->qlen = (u_short) len; | |
3645 rn->query = p; | |
3646 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3647 #if (NGX_HAVE_INET6) |
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
3648 if (r->ipv6) { |
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
3649 rn->query6 = p + len; |
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
3650 } |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3651 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3652 |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3653 query = (ngx_resolver_hdr_t *) p; |
1649 | 3654 |
3655 ident = ngx_random(); | |
3656 | |
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3657 ngx_log_debug2(NGX_LOG_DEBUG_CORE, r->log, 0, |
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3658 "resolve: \"%V\" A %i", name, ident & 0xffff); |
1649 | 3659 |
3660 query->ident_hi = (u_char) ((ident >> 8) & 0xff); | |
3661 query->ident_lo = (u_char) (ident & 0xff); | |
3662 | |
3663 /* recursion query */ | |
3664 query->flags_hi = 1; query->flags_lo = 0; | |
3665 | |
3666 /* one question */ | |
3667 query->nqs_hi = 0; query->nqs_lo = 1; | |
3668 query->nan_hi = 0; query->nan_lo = 0; | |
3669 query->nns_hi = 0; query->nns_lo = 0; | |
3670 query->nar_hi = 0; query->nar_lo = 0; | |
3671 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3672 p += sizeof(ngx_resolver_hdr_t) + nlen; |
1649 | 3673 |
3674 qs = (ngx_resolver_qs_t *) p; | |
3675 | |
3676 /* query type */ | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3677 qs->type_hi = 0; qs->type_lo = NGX_RESOLVE_A; |
1649 | 3678 |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3679 /* IN query class */ |
1649 | 3680 qs->class_hi = 0; qs->class_lo = 1; |
3681 | |
3682 /* convert "www.example.com" to "\3www\7example\3com\0" */ | |
3683 | |
3684 len = 0; | |
3685 p--; | |
3686 *p-- = '\0'; | |
3687 | |
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3688 if (name->len == 0) { |
4610
778d2cc03e22
Fixed segmentation fault in ngx_resolver_create_name_query().
Ruslan Ermilov <ru@nginx.com>
parents:
4556
diff
changeset
|
3689 return NGX_DECLINED; |
778d2cc03e22
Fixed segmentation fault in ngx_resolver_create_name_query().
Ruslan Ermilov <ru@nginx.com>
parents:
4556
diff
changeset
|
3690 } |
778d2cc03e22
Fixed segmentation fault in ngx_resolver_create_name_query().
Ruslan Ermilov <ru@nginx.com>
parents:
4556
diff
changeset
|
3691 |
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3692 for (s = name->data + name->len - 1; s >= name->data; s--) { |
1649 | 3693 if (*s != '.') { |
3694 *p = *s; | |
3695 len++; | |
3696 | |
3697 } else { | |
4556
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
3698 if (len == 0 || len > 255) { |
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
3699 return NGX_DECLINED; |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
3700 } |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
3701 |
1649 | 3702 *p = (u_char) len; |
3703 len = 0; | |
3704 } | |
3705 | |
3706 p--; | |
3707 } | |
3708 | |
4556
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
3709 if (len == 0 || len > 255) { |
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
3710 return NGX_DECLINED; |
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
3711 } |
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
3712 |
1649 | 3713 *p = (u_char) len; |
3714 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3715 #if (NGX_HAVE_INET6) |
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
3716 if (!r->ipv6) { |
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
3717 return NGX_OK; |
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
3718 } |
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
3719 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3720 p = rn->query6; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3721 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3722 ngx_memcpy(p, rn->query, rn->qlen); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3723 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3724 query = (ngx_resolver_hdr_t *) p; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3725 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3726 ident = ngx_random(); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3727 |
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3728 ngx_log_debug2(NGX_LOG_DEBUG_CORE, r->log, 0, |
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3729 "resolve: \"%V\" AAAA %i", name, ident & 0xffff); |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3730 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3731 query->ident_hi = (u_char) ((ident >> 8) & 0xff); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3732 query->ident_lo = (u_char) (ident & 0xff); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3733 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3734 p += sizeof(ngx_resolver_hdr_t) + nlen; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3735 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3736 qs = (ngx_resolver_qs_t *) p; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3737 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3738 qs->type_lo = NGX_RESOLVE_AAAA; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3739 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3740 |
1649 | 3741 return NGX_OK; |
3742 } | |
3743 | |
3744 | |
3745 static ngx_int_t | |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3746 ngx_resolver_create_srv_query(ngx_resolver_t *r, ngx_resolver_node_t *rn, |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3747 ngx_str_t *name) |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3748 { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3749 u_char *p, *s; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3750 size_t len, nlen; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3751 ngx_uint_t ident; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3752 ngx_resolver_qs_t *qs; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3753 ngx_resolver_hdr_t *query; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3754 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3755 nlen = name->len ? (1 + name->len + 1) : 1; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3756 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3757 len = sizeof(ngx_resolver_hdr_t) + nlen + sizeof(ngx_resolver_qs_t); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3758 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3759 p = ngx_resolver_alloc(r, len); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3760 if (p == NULL) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3761 return NGX_ERROR; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3762 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3763 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3764 rn->qlen = (u_short) len; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3765 rn->query = p; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3766 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3767 query = (ngx_resolver_hdr_t *) p; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3768 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3769 ident = ngx_random(); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3770 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3771 ngx_log_debug2(NGX_LOG_DEBUG_CORE, r->log, 0, |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3772 "resolve: \"%V\" SRV %i", name, ident & 0xffff); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3773 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3774 query->ident_hi = (u_char) ((ident >> 8) & 0xff); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3775 query->ident_lo = (u_char) (ident & 0xff); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3776 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3777 /* recursion query */ |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3778 query->flags_hi = 1; query->flags_lo = 0; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3779 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3780 /* one question */ |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3781 query->nqs_hi = 0; query->nqs_lo = 1; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3782 query->nan_hi = 0; query->nan_lo = 0; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3783 query->nns_hi = 0; query->nns_lo = 0; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3784 query->nar_hi = 0; query->nar_lo = 0; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3785 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3786 p += sizeof(ngx_resolver_hdr_t) + nlen; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3787 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3788 qs = (ngx_resolver_qs_t *) p; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3789 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3790 /* query type */ |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3791 qs->type_hi = 0; qs->type_lo = NGX_RESOLVE_SRV; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3792 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3793 /* IN query class */ |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3794 qs->class_hi = 0; qs->class_lo = 1; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3795 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3796 /* converts "www.example.com" to "\3www\7example\3com\0" */ |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3797 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3798 len = 0; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3799 p--; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3800 *p-- = '\0'; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3801 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3802 if (name->len == 0) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3803 return NGX_DECLINED; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3804 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3805 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3806 for (s = name->data + name->len - 1; s >= name->data; s--) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3807 if (*s != '.') { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3808 *p = *s; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3809 len++; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3810 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3811 } else { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3812 if (len == 0 || len > 255) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3813 return NGX_DECLINED; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3814 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3815 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3816 *p = (u_char) len; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3817 len = 0; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3818 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3819 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3820 p--; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3821 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3822 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3823 if (len == 0 || len > 255) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3824 return NGX_DECLINED; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3825 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3826 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3827 *p = (u_char) len; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3828 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3829 return NGX_OK; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3830 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3831 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3832 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3833 static ngx_int_t |
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3834 ngx_resolver_create_addr_query(ngx_resolver_t *r, ngx_resolver_node_t *rn, |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
3835 ngx_resolver_addr_t *addr) |
1649 | 3836 { |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3837 u_char *p, *d; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3838 size_t len; |
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3839 in_addr_t inaddr; |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3840 ngx_int_t n; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3841 ngx_uint_t ident; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3842 ngx_resolver_hdr_t *query; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3843 struct sockaddr_in *sin; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3844 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3845 struct sockaddr_in6 *sin6; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3846 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3847 |
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3848 switch (addr->sockaddr->sa_family) { |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3849 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3850 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3851 case AF_INET6: |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3852 len = sizeof(ngx_resolver_hdr_t) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3853 + 64 + sizeof(".ip6.arpa.") - 1 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3854 + sizeof(ngx_resolver_qs_t); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3855 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3856 break; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3857 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3858 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3859 default: /* AF_INET */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3860 len = sizeof(ngx_resolver_hdr_t) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3861 + sizeof(".255.255.255.255.in-addr.arpa.") - 1 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3862 + sizeof(ngx_resolver_qs_t); |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
3863 } |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3864 |
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3865 p = ngx_resolver_alloc(r, len); |
1649 | 3866 if (p == NULL) { |
3867 return NGX_ERROR; | |
3868 } | |
3869 | |
3870 rn->query = p; | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3871 query = (ngx_resolver_hdr_t *) p; |
1649 | 3872 |
3873 ident = ngx_random(); | |
3874 | |
3875 query->ident_hi = (u_char) ((ident >> 8) & 0xff); | |
3876 query->ident_lo = (u_char) (ident & 0xff); | |
3877 | |
3878 /* recursion query */ | |
3879 query->flags_hi = 1; query->flags_lo = 0; | |
3880 | |
3881 /* one question */ | |
3882 query->nqs_hi = 0; query->nqs_lo = 1; | |
3883 query->nan_hi = 0; query->nan_lo = 0; | |
3884 query->nns_hi = 0; query->nns_lo = 0; | |
3885 query->nar_hi = 0; query->nar_lo = 0; | |
3886 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3887 p += sizeof(ngx_resolver_hdr_t); |
1649 | 3888 |
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3889 switch (addr->sockaddr->sa_family) { |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3890 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3891 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3892 case AF_INET6: |
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3893 sin6 = (struct sockaddr_in6 *) addr->sockaddr; |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3894 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3895 for (n = 15; n >= 0; n--) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3896 p = ngx_sprintf(p, "\1%xd\1%xd", |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3897 sin6->sin6_addr.s6_addr[n] & 0xf, |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3898 (sin6->sin6_addr.s6_addr[n] >> 4) & 0xf); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3899 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3900 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3901 p = ngx_cpymem(p, "\3ip6\4arpa\0", 10); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3902 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3903 break; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3904 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3905 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3906 default: /* AF_INET */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3907 |
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3908 sin = (struct sockaddr_in *) addr->sockaddr; |
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3909 inaddr = ntohl(sin->sin_addr.s_addr); |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3910 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3911 for (n = 0; n < 32; n += 8) { |
6350
a5767988c022
Resolver: changed the ngx_resolver_create_*_query() arguments.
Roman Arutyunyan <arut@nginx.com>
parents:
6349
diff
changeset
|
3912 d = ngx_sprintf(&p[1], "%ud", (inaddr >> n) & 0xff); |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3913 *p = (u_char) (d - &p[1]); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3914 p = d; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3915 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3916 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3917 p = ngx_cpymem(p, "\7in-addr\4arpa\0", 14); |
1649 | 3918 } |
3919 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
3920 /* query type "PTR", IN query class */ |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3921 p = ngx_cpymem(p, "\0\14\0\1", 4); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3922 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
3923 rn->qlen = (u_short) (p - rn->query); |
1649 | 3924 |
3925 return NGX_OK; | |
3926 } | |
3927 | |
3928 | |
3929 static ngx_int_t | |
3930 ngx_resolver_copy(ngx_resolver_t *r, ngx_str_t *name, u_char *buf, u_char *src, | |
3931 u_char *last) | |
3932 { | |
3933 char *err; | |
3934 u_char *p, *dst; | |
3935 ssize_t len; | |
3936 ngx_uint_t i, n; | |
3937 | |
3938 p = src; | |
3939 len = -1; | |
3940 | |
3941 /* | |
3942 * compression pointers allow to create endless loop, so we set limit; | |
3943 * 128 pointers should be enough to store 255-byte name | |
3944 */ | |
3945 | |
3946 for (i = 0; i < 128; i++) { | |
3947 n = *p++; | |
3948 | |
3949 if (n == 0) { | |
3950 goto done; | |
3951 } | |
3952 | |
3953 if (n & 0xc0) { | |
2314
52987a023486
fix compression pointer for big (>255) DNS responses
Igor Sysoev <igor@sysoev.ru>
parents:
2282
diff
changeset
|
3954 n = ((n & 0x3f) << 8) + *p; |
1649 | 3955 p = &buf[n]; |
3956 | |
3957 } else { | |
3958 len += 1 + n; | |
3959 p = &p[n]; | |
3960 } | |
3961 | |
3962 if (p >= last) { | |
3963 err = "name is out of response"; | |
3964 goto invalid; | |
3965 } | |
3966 } | |
3967 | |
3968 err = "compression pointers loop"; | |
3969 | |
3970 invalid: | |
3971 | |
3972 ngx_log_error(r->log_level, r->log, 0, err); | |
3973 | |
3974 return NGX_ERROR; | |
3975 | |
3976 done: | |
3977 | |
3978 if (name == NULL) { | |
583 | 3979 return NGX_OK; |
3980 } | |
3981 | |
3298
847ab5a32307
fix "PTR ." case in address resolver
Igor Sysoev <igor@sysoev.ru>
parents:
3297
diff
changeset
|
3982 if (len == -1) { |
5764
f166c521b619
Style: use ngx_str_null().
Tatsuhiko Kubo <cubicdaiya@gmail.com>
parents:
5600
diff
changeset
|
3983 ngx_str_null(name); |
3298
847ab5a32307
fix "PTR ." case in address resolver
Igor Sysoev <igor@sysoev.ru>
parents:
3297
diff
changeset
|
3984 return NGX_OK; |
847ab5a32307
fix "PTR ." case in address resolver
Igor Sysoev <igor@sysoev.ru>
parents:
3297
diff
changeset
|
3985 } |
847ab5a32307
fix "PTR ." case in address resolver
Igor Sysoev <igor@sysoev.ru>
parents:
3297
diff
changeset
|
3986 |
1649 | 3987 dst = ngx_resolver_alloc(r, len); |
3988 if (dst == NULL) { | |
3989 return NGX_ERROR; | |
3990 } | |
3991 | |
3992 name->data = dst; | |
3993 | |
3994 n = *src++; | |
3995 | |
3996 for ( ;; ) { | |
4267
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
3997 if (n & 0xc0) { |
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
3998 n = ((n & 0x3f) << 8) + *src; |
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
3999 src = &buf[n]; |
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
4000 |
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
4001 n = *src++; |
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
4002 |
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
4003 } else { |
5479
c0d6eae5a1c5
Resolver: lookups are case-insensitive.
Ruslan Ermilov <ru@nginx.com>
parents:
5478
diff
changeset
|
4004 ngx_strlow(dst, src, n); |
1649 | 4005 dst += n; |
4006 src += n; | |
4007 | |
4008 n = *src++; | |
4009 | |
4010 if (n != 0) { | |
4011 *dst++ = '.'; | |
4012 } | |
4013 } | |
4014 | |
4015 if (n == 0) { | |
4016 name->len = dst - name->data; | |
4017 return NGX_OK; | |
4018 } | |
4019 } | |
4020 } | |
4021 | |
4022 | |
4023 static void | |
4024 ngx_resolver_timeout_handler(ngx_event_t *ev) | |
4025 { | |
6348
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
4026 ngx_resolver_ctx_t *ctx; |
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
4027 |
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
4028 ctx = ev->data; |
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
4029 |
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
4030 ctx->state = NGX_RESOLVE_TIMEDOUT; |
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
4031 |
7316c57e4fe7
Resolver: fixed crashes in timeout handler.
Ruslan Ermilov <ru@nginx.com>
parents:
6347
diff
changeset
|
4032 ctx->handler(ctx); |
1649 | 4033 } |
4034 | |
4035 | |
4036 static void | |
4037 ngx_resolver_free_node(ngx_resolver_t *r, ngx_resolver_node_t *rn) | |
4038 { | |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4039 ngx_uint_t i; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4040 |
1649 | 4041 /* lock alloc mutex */ |
4042 | |
4043 if (rn->query) { | |
4044 ngx_resolver_free_locked(r, rn->query); | |
4045 } | |
4046 | |
4047 if (rn->name) { | |
4048 ngx_resolver_free_locked(r, rn->name); | |
4049 } | |
4050 | |
4051 if (rn->cnlen) { | |
4052 ngx_resolver_free_locked(r, rn->u.cname); | |
4053 } | |
4054 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4055 if (rn->naddrs > 1 && rn->naddrs != (u_short) -1) { |
1649 | 4056 ngx_resolver_free_locked(r, rn->u.addrs); |
4057 } | |
4058 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4059 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4060 if (rn->naddrs6 > 1 && rn->naddrs6 != (u_short) -1) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4061 ngx_resolver_free_locked(r, rn->u6.addrs6); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4062 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4063 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4064 |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4065 if (rn->nsrvs) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4066 for (i = 0; i < rn->nsrvs; i++) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4067 if (rn->u.srvs[i].name.data) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4068 ngx_resolver_free_locked(r, rn->u.srvs[i].name.data); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4069 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4070 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4071 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4072 ngx_resolver_free_locked(r, rn->u.srvs); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4073 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4074 |
1649 | 4075 ngx_resolver_free_locked(r, rn); |
4076 | |
4077 /* unlock alloc mutex */ | |
4078 } | |
4079 | |
4080 | |
4081 static void * | |
4082 ngx_resolver_alloc(ngx_resolver_t *r, size_t size) | |
4083 { | |
4084 u_char *p; | |
4085 | |
4086 /* lock alloc mutex */ | |
4087 | |
4088 p = ngx_alloc(size, r->log); | |
4089 | |
4090 /* unlock alloc mutex */ | |
4091 | |
4092 return p; | |
4093 } | |
4094 | |
4095 | |
1903 | 4096 static void * |
1649 | 4097 ngx_resolver_calloc(ngx_resolver_t *r, size_t size) |
4098 { | |
4099 u_char *p; | |
4100 | |
4101 p = ngx_resolver_alloc(r, size); | |
4102 | |
4103 if (p) { | |
4104 ngx_memzero(p, size); | |
4105 } | |
4106 | |
4107 return p; | |
4108 } | |
4109 | |
4110 | |
4111 static void | |
4112 ngx_resolver_free(ngx_resolver_t *r, void *p) | |
4113 { | |
4114 /* lock alloc mutex */ | |
4115 | |
4116 ngx_free(p); | |
4117 | |
4118 /* unlock alloc mutex */ | |
4119 } | |
4120 | |
4121 | |
4122 static void | |
4123 ngx_resolver_free_locked(ngx_resolver_t *r, void *p) | |
4124 { | |
4125 ngx_free(p); | |
4126 } | |
4127 | |
4128 | |
4129 static void * | |
4130 ngx_resolver_dup(ngx_resolver_t *r, void *src, size_t size) | |
4131 { | |
4132 void *dst; | |
4133 | |
4134 dst = ngx_resolver_alloc(r, size); | |
4135 | |
4136 if (dst == NULL) { | |
4137 return dst; | |
4138 } | |
4139 | |
4140 ngx_memcpy(dst, src, size); | |
4141 | |
4142 return dst; | |
4143 } | |
4144 | |
4145 | |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4146 static ngx_resolver_addr_t * |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4147 ngx_resolver_export(ngx_resolver_t *r, ngx_resolver_node_t *rn, |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
4148 ngx_uint_t rotate) |
4871
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4149 { |
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4150 ngx_uint_t d, i, j, n; |
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4151 in_addr_t *addr; |
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4152 ngx_sockaddr_t *sockaddr; |
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4153 struct sockaddr_in *sin; |
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4154 ngx_resolver_addr_t *dst; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4155 #if (NGX_HAVE_INET6) |
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4156 struct in6_addr *addr6; |
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4157 struct sockaddr_in6 *sin6; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4158 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4159 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4160 n = rn->naddrs; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4161 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4162 n += rn->naddrs6; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4163 #endif |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
4164 |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4165 dst = ngx_resolver_calloc(r, n * sizeof(ngx_resolver_addr_t)); |
4892
063ac68d89dc
Resolver: added missing memory allocation error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4871
diff
changeset
|
4166 if (dst == NULL) { |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
4167 return NULL; |
4892
063ac68d89dc
Resolver: added missing memory allocation error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4871
diff
changeset
|
4168 } |
063ac68d89dc
Resolver: added missing memory allocation error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4871
diff
changeset
|
4169 |
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4170 sockaddr = ngx_resolver_calloc(r, n * sizeof(ngx_sockaddr_t)); |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4171 if (sockaddr == NULL) { |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
4172 ngx_resolver_free(r, dst); |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
4173 return NULL; |
4871
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4174 } |
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4175 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4176 i = 0; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4177 d = rotate ? ngx_random() % n : 0; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4178 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4179 if (rn->naddrs) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4180 j = rotate ? ngx_random() % rn->naddrs : 0; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4181 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4182 addr = (rn->naddrs == 1) ? &rn->u.addr : rn->u.addrs; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4183 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4184 do { |
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4185 sin = &sockaddr[d].sockaddr_in; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4186 sin->sin_family = AF_INET; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4187 sin->sin_addr.s_addr = addr[j++]; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4188 dst[d].sockaddr = (struct sockaddr *) sin; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4189 dst[d++].socklen = sizeof(struct sockaddr_in); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4190 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4191 if (d == n) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4192 d = 0; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4193 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4194 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4195 if (j == rn->naddrs) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4196 j = 0; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4197 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4198 } while (++i < rn->naddrs); |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
4199 } |
4871
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4200 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4201 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4202 if (rn->naddrs6) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4203 j = rotate ? ngx_random() % rn->naddrs6 : 0; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4204 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4205 addr6 = (rn->naddrs6 == 1) ? &rn->u6.addr6 : rn->u6.addrs6; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4206 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4207 do { |
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6509
diff
changeset
|
4208 sin6 = &sockaddr[d].sockaddr_in6; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4209 sin6->sin6_family = AF_INET6; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4210 ngx_memcpy(sin6->sin6_addr.s6_addr, addr6[j++].s6_addr, 16); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4211 dst[d].sockaddr = (struct sockaddr *) sin6; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4212 dst[d++].socklen = sizeof(struct sockaddr_in6); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4213 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4214 if (d == n) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4215 d = 0; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4216 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4217 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4218 if (j == rn->naddrs6) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4219 j = 0; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4220 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4221 } while (++i < n); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4222 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4223 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
4224 |
4871
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4225 return dst; |
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4226 } |
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4227 |
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
4228 |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4229 static void |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4230 ngx_resolver_report_srv(ngx_resolver_t *r, ngx_resolver_ctx_t *ctx) |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4231 { |
6460
034329824dd3
Win32: fixed build after 384154fc634f.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6458
diff
changeset
|
4232 ngx_uint_t naddrs, nsrvs, nw, i, j, k, l, m, n, w; |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4233 ngx_resolver_addr_t *addrs; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4234 ngx_resolver_srv_name_t *srvs; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4235 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4236 naddrs = 0; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4237 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4238 for (i = 0; i < ctx->nsrvs; i++) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4239 naddrs += ctx->srvs[i].naddrs; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4240 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4241 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4242 if (naddrs == 0) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4243 ctx->state = NGX_RESOLVE_NXDOMAIN; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4244 ctx->valid = ngx_time() + (r->valid ? r->valid : 10); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4245 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4246 ctx->handler(ctx); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4247 return; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4248 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4249 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4250 addrs = ngx_resolver_calloc(r, naddrs * sizeof(ngx_resolver_addr_t)); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4251 if (addrs == NULL) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4252 ctx->state = NGX_ERROR; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4253 ctx->valid = ngx_time() + (r->valid ? r->valid : 10); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4254 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4255 ctx->handler(ctx); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4256 return; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4257 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4258 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4259 srvs = ctx->srvs; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4260 nsrvs = ctx->nsrvs; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4261 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4262 i = 0; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4263 n = 0; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4264 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4265 do { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4266 nw = 0; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4267 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4268 for (j = i; j < nsrvs; j++) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4269 if (srvs[j].priority != srvs[i].priority) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4270 break; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4271 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4272 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4273 nw += srvs[j].naddrs * srvs[j].weight; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4274 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4275 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4276 if (nw == 0) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4277 goto next_srv; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4278 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4279 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4280 w = ngx_random() % nw; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4281 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4282 for (k = i; k < j; k++) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4283 if (w < srvs[k].naddrs * srvs[k].weight) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4284 break; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4285 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4286 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4287 w -= srvs[k].naddrs * srvs[k].weight; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4288 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4289 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4290 for (l = i; l < j; l++) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4291 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4292 for (m = 0; m < srvs[k].naddrs; m++) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4293 addrs[n].socklen = srvs[k].addrs[m].socklen; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4294 addrs[n].sockaddr = srvs[k].addrs[m].sockaddr; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4295 addrs[n].name = srvs[k].name; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4296 addrs[n].priority = srvs[k].priority; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4297 addrs[n].weight = srvs[k].weight; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4298 n++; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4299 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4300 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4301 if (++k == j) { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4302 k = i; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4303 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4304 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4305 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4306 next_srv: |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4307 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4308 i = j; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4309 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4310 } while (i < ctx->nsrvs); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4311 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4312 ctx->state = NGX_OK; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4313 ctx->addrs = addrs; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4314 ctx->naddrs = naddrs; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4315 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4316 ctx->handler(ctx); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4317 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4318 ngx_resolver_free(r, addrs); |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4319 } |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4320 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4321 |
1649 | 4322 char * |
4323 ngx_resolver_strerror(ngx_int_t err) | |
4324 { | |
4325 static char *errors[] = { | |
4326 "Format error", /* FORMERR */ | |
4327 "Server failure", /* SERVFAIL */ | |
4328 "Host not found", /* NXDOMAIN */ | |
4329 "Unimplemented", /* NOTIMP */ | |
4330 "Operation refused" /* REFUSED */ | |
4331 }; | |
4332 | |
4333 if (err > 0 && err < 6) { | |
4334 return errors[err - 1]; | |
4335 } | |
4336 | |
4337 if (err == NGX_RESOLVE_TIMEDOUT) { | |
4338 return "Operation timed out"; | |
4339 } | |
4340 | |
4341 return "Unknown error"; | |
4342 } | |
4343 | |
4344 | |
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4345 static u_char * |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4346 ngx_resolver_log_error(ngx_log_t *log, u_char *buf, size_t len) |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4347 { |
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4348 u_char *p; |
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4349 ngx_resolver_connection_t *rec; |
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4350 |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4351 p = buf; |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4352 |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4353 if (log->action) { |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4354 p = ngx_snprintf(buf, len, " while %s", log->action); |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4355 len -= p - buf; |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4356 } |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4357 |
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4358 rec = log->data; |
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4359 |
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4360 if (rec) { |
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4361 p = ngx_snprintf(p, len, ", resolver: %V", &rec->server); |
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4362 } |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4363 |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4364 return p; |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4365 } |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4366 |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4367 |
1649 | 4368 ngx_int_t |
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4369 ngx_udp_connect(ngx_resolver_connection_t *rec) |
1649 | 4370 { |
4371 int rc; | |
4372 ngx_int_t event; | |
4373 ngx_event_t *rev, *wev; | |
4374 ngx_socket_t s; | |
4375 ngx_connection_t *c; | |
4376 | |
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4377 s = ngx_socket(rec->sockaddr->sa_family, SOCK_DGRAM, 0); |
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4378 |
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4379 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, &rec->log, 0, "UDP socket %d", s); |
583 | 4380 |
5360
3d2d3e1cf427
Win32: MinGW GCC compatibility.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4892
diff
changeset
|
4381 if (s == (ngx_socket_t) -1) { |
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4382 ngx_log_error(NGX_LOG_ALERT, &rec->log, ngx_socket_errno, |
583 | 4383 ngx_socket_n " failed"); |
4384 return NGX_ERROR; | |
4385 } | |
4386 | |
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4387 c = ngx_get_connection(s, &rec->log); |
583 | 4388 |
4389 if (c == NULL) { | |
4390 if (ngx_close_socket(s) == -1) { | |
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4391 ngx_log_error(NGX_LOG_ALERT, &rec->log, ngx_socket_errno, |
583 | 4392 ngx_close_socket_n "failed"); |
4393 } | |
4394 | |
4395 return NGX_ERROR; | |
4396 } | |
4397 | |
1649 | 4398 if (ngx_nonblocking(s) == -1) { |
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4399 ngx_log_error(NGX_LOG_ALERT, &rec->log, ngx_socket_errno, |
1649 | 4400 ngx_nonblocking_n " failed"); |
4401 | |
5582
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4402 goto failed; |
1649 | 4403 } |
4404 | |
583 | 4405 rev = c->read; |
4406 wev = c->write; | |
4407 | |
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4408 rev->log = &rec->log; |
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4409 wev->log = &rec->log; |
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4410 |
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4411 rec->udp = c; |
583 | 4412 |
4413 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1); | |
4414 | |
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4415 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, &rec->log, 0, |
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4416 "connect to %V, fd:%d #%uA", &rec->server, s, c->number); |
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4417 |
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4418 rc = connect(s, rec->sockaddr, rec->socklen); |
1649 | 4419 |
6125
4dc8e7b62216
Removed the obsolete aio module.
Ruslan Ermilov <ru@nginx.com>
parents:
5921
diff
changeset
|
4420 /* TODO: iocp */ |
583 | 4421 |
4422 if (rc == -1) { | |
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4423 ngx_log_error(NGX_LOG_CRIT, &rec->log, ngx_socket_errno, |
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
4424 "connect() failed"); |
583 | 4425 |
5582
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4426 goto failed; |
583 | 4427 } |
4428 | |
1649 | 4429 /* UDP sockets are always ready to write */ |
4430 wev->ready = 1; | |
4431 | |
6126
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
4432 event = (ngx_event_flags & NGX_USE_CLEAR_EVENT) ? |
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
4433 /* kqueue, epoll */ NGX_CLEAR_EVENT: |
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
4434 /* select, poll, /dev/poll */ NGX_LEVEL_EVENT; |
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
4435 /* eventport event type has no meaning: oneshot only */ |
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
4436 |
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
4437 if (ngx_add_event(rev, NGX_READ_EVENT, event) != NGX_OK) { |
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
4438 goto failed; |
583 | 4439 } |
4440 | |
4441 return NGX_OK; | |
5582
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4442 |
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4443 failed: |
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4444 |
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4445 ngx_close_connection(c); |
6365
d35b4d590b2d
Resolver: renamed UDP-specific structures, fields and variables.
Roman Arutyunyan <arut@nginx.com>
parents:
6352
diff
changeset
|
4446 rec->udp = NULL; |
5582
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4447 |
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
4448 return NGX_ERROR; |
583 | 4449 } |
6367 | 4450 |
4451 | |
4452 ngx_int_t | |
4453 ngx_tcp_connect(ngx_resolver_connection_t *rec) | |
4454 { | |
4455 int rc; | |
4456 ngx_int_t event; | |
4457 ngx_err_t err; | |
4458 ngx_uint_t level; | |
4459 ngx_socket_t s; | |
4460 ngx_event_t *rev, *wev; | |
4461 ngx_connection_t *c; | |
4462 | |
4463 s = ngx_socket(rec->sockaddr->sa_family, SOCK_STREAM, 0); | |
4464 | |
4465 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, &rec->log, 0, "TCP socket %d", s); | |
4466 | |
4467 if (s == (ngx_socket_t) -1) { | |
4468 ngx_log_error(NGX_LOG_ALERT, &rec->log, ngx_socket_errno, | |
4469 ngx_socket_n " failed"); | |
4470 return NGX_ERROR; | |
4471 } | |
4472 | |
4473 c = ngx_get_connection(s, &rec->log); | |
4474 | |
4475 if (c == NULL) { | |
4476 if (ngx_close_socket(s) == -1) { | |
4477 ngx_log_error(NGX_LOG_ALERT, &rec->log, ngx_socket_errno, | |
4478 ngx_close_socket_n "failed"); | |
4479 } | |
4480 | |
4481 return NGX_ERROR; | |
4482 } | |
4483 | |
4484 if (ngx_nonblocking(s) == -1) { | |
4485 ngx_log_error(NGX_LOG_ALERT, &rec->log, ngx_socket_errno, | |
4486 ngx_nonblocking_n " failed"); | |
4487 | |
4488 goto failed; | |
4489 } | |
4490 | |
4491 rev = c->read; | |
4492 wev = c->write; | |
4493 | |
4494 rev->log = &rec->log; | |
4495 wev->log = &rec->log; | |
4496 | |
4497 rec->tcp = c; | |
4498 | |
4499 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1); | |
4500 | |
4501 if (ngx_add_conn) { | |
4502 if (ngx_add_conn(c) == NGX_ERROR) { | |
4503 goto failed; | |
4504 } | |
4505 } | |
4506 | |
4507 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, &rec->log, 0, | |
4508 "connect to %V, fd:%d #%uA", &rec->server, s, c->number); | |
4509 | |
4510 rc = connect(s, rec->sockaddr, rec->socklen); | |
4511 | |
4512 if (rc == -1) { | |
4513 err = ngx_socket_errno; | |
4514 | |
4515 | |
4516 if (err != NGX_EINPROGRESS | |
4517 #if (NGX_WIN32) | |
4518 /* Winsock returns WSAEWOULDBLOCK (NGX_EAGAIN) */ | |
4519 && err != NGX_EAGAIN | |
4520 #endif | |
4521 ) | |
4522 { | |
4523 if (err == NGX_ECONNREFUSED | |
4524 #if (NGX_LINUX) | |
4525 /* | |
4526 * Linux returns EAGAIN instead of ECONNREFUSED | |
4527 * for unix sockets if listen queue is full | |
4528 */ | |
4529 || err == NGX_EAGAIN | |
4530 #endif | |
4531 || err == NGX_ECONNRESET | |
4532 || err == NGX_ENETDOWN | |
4533 || err == NGX_ENETUNREACH | |
4534 || err == NGX_EHOSTDOWN | |
4535 || err == NGX_EHOSTUNREACH) | |
4536 { | |
4537 level = NGX_LOG_ERR; | |
4538 | |
4539 } else { | |
4540 level = NGX_LOG_CRIT; | |
4541 } | |
4542 | |
4543 ngx_log_error(level, c->log, err, "connect() to %V failed", | |
4544 &rec->server); | |
4545 | |
4546 ngx_close_connection(c); | |
4547 rec->tcp = NULL; | |
4548 | |
4549 return NGX_ERROR; | |
4550 } | |
4551 } | |
4552 | |
4553 if (ngx_add_conn) { | |
4554 if (rc == -1) { | |
4555 | |
4556 /* NGX_EINPROGRESS */ | |
4557 | |
4558 return NGX_AGAIN; | |
4559 } | |
4560 | |
4561 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, &rec->log, 0, "connected"); | |
4562 | |
4563 wev->ready = 1; | |
4564 | |
4565 return NGX_OK; | |
4566 } | |
4567 | |
4568 if (ngx_event_flags & NGX_USE_IOCP_EVENT) { | |
4569 | |
4570 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, &rec->log, ngx_socket_errno, | |
4571 "connect(): %d", rc); | |
4572 | |
4573 if (ngx_blocking(s) == -1) { | |
4574 ngx_log_error(NGX_LOG_ALERT, &rec->log, ngx_socket_errno, | |
4575 ngx_blocking_n " failed"); | |
4576 goto failed; | |
4577 } | |
4578 | |
4579 /* | |
4580 * FreeBSD's aio allows to post an operation on non-connected socket. | |
4581 * NT does not support it. | |
4582 * | |
4583 * TODO: check in Win32, etc. As workaround we can use NGX_ONESHOT_EVENT | |
4584 */ | |
4585 | |
4586 rev->ready = 1; | |
4587 wev->ready = 1; | |
4588 | |
4589 return NGX_OK; | |
4590 } | |
4591 | |
4592 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) { | |
4593 | |
4594 /* kqueue */ | |
4595 | |
4596 event = NGX_CLEAR_EVENT; | |
4597 | |
4598 } else { | |
4599 | |
4600 /* select, poll, /dev/poll */ | |
4601 | |
4602 event = NGX_LEVEL_EVENT; | |
4603 } | |
4604 | |
4605 if (ngx_add_event(rev, NGX_READ_EVENT, event) != NGX_OK) { | |
4606 goto failed; | |
4607 } | |
4608 | |
4609 if (rc == -1) { | |
4610 | |
4611 /* NGX_EINPROGRESS */ | |
4612 | |
4613 if (ngx_add_event(wev, NGX_WRITE_EVENT, event) != NGX_OK) { | |
4614 goto failed; | |
4615 } | |
4616 | |
4617 return NGX_AGAIN; | |
4618 } | |
4619 | |
4620 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, &rec->log, 0, "connected"); | |
4621 | |
4622 wev->ready = 1; | |
4623 | |
4624 return NGX_OK; | |
4625 | |
4626 failed: | |
4627 | |
4628 ngx_close_connection(c); | |
4629 rec->tcp = NULL; | |
4630 | |
4631 return NGX_ERROR; | |
4632 } | |
6458
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4633 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4634 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4635 static ngx_int_t |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4636 ngx_resolver_cmp_srvs(const void *one, const void *two) |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4637 { |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4638 ngx_int_t p1, p2; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4639 ngx_resolver_srv_t *first, *second; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4640 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4641 first = (ngx_resolver_srv_t *) one; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4642 second = (ngx_resolver_srv_t *) two; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4643 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4644 p1 = first->priority; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4645 p2 = second->priority; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4646 |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4647 return p1 - p2; |
384154fc634f
Resolver: added support for SRV records.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6457
diff
changeset
|
4648 } |