Mercurial > hg > nginx
annotate src/core/ngx_resolver.c @ 6347:81d44cd4044e
Resolver: fixed possible segmentation fault on DNS format error.
| author | Roman Arutyunyan <arut@nginx.com> |
|---|---|
| date | Tue, 26 Jan 2016 16:46:18 +0300 |
| parents | c3ec43580a48 |
| children | 7316c57e4fe7 |
| 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 | |
| 15 | |
| 583 | 16 typedef struct { |
| 1649 | 17 u_char ident_hi; |
| 18 u_char ident_lo; | |
| 19 u_char flags_hi; | |
| 20 u_char flags_lo; | |
| 21 u_char nqs_hi; | |
| 22 u_char nqs_lo; | |
| 23 u_char nan_hi; | |
| 24 u_char nan_lo; | |
| 25 u_char nns_hi; | |
| 26 u_char nns_lo; | |
| 27 u_char nar_hi; | |
| 28 u_char nar_lo; | |
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29 } ngx_resolver_hdr_t; |
| 1649 | 30 |
| 31 | |
| 32 typedef struct { | |
| 33 u_char type_hi; | |
| 34 u_char type_lo; | |
| 35 u_char class_hi; | |
| 36 u_char class_lo; | |
| 37 } ngx_resolver_qs_t; | |
| 38 | |
| 39 | |
| 40 typedef struct { | |
| 41 u_char type_hi; | |
| 42 u_char type_lo; | |
| 43 u_char class_hi; | |
| 44 u_char class_lo; | |
| 45 u_char ttl[4]; | |
| 46 u_char len_hi; | |
| 47 u_char len_lo; | |
| 48 } ngx_resolver_an_t; | |
| 49 | |
| 50 | |
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51 #define ngx_resolver_node(n) \ |
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52 (ngx_resolver_node_t *) \ |
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53 ((u_char *) (n) - offsetof(ngx_resolver_node_t, node)) |
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54 |
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55 |
| 1649 | 56 ngx_int_t ngx_udp_connect(ngx_udp_connection_t *uc); |
| 57 | |
| 58 | |
| 1906 | 59 static void ngx_resolver_cleanup(void *data); |
| 60 static void ngx_resolver_cleanup_tree(ngx_resolver_t *r, ngx_rbtree_t *tree); | |
| 1649 | 61 static ngx_int_t ngx_resolve_name_locked(ngx_resolver_t *r, |
| 62 ngx_resolver_ctx_t *ctx); | |
| 63 static void ngx_resolver_expire(ngx_resolver_t *r, ngx_rbtree_t *tree, | |
| 64 ngx_queue_t *queue); | |
| 65 static ngx_int_t ngx_resolver_send_query(ngx_resolver_t *r, | |
| 66 ngx_resolver_node_t *rn); | |
| 67 static ngx_int_t ngx_resolver_create_name_query(ngx_resolver_node_t *rn, | |
| 68 ngx_resolver_ctx_t *ctx); | |
| 69 static ngx_int_t ngx_resolver_create_addr_query(ngx_resolver_node_t *rn, | |
| 70 ngx_resolver_ctx_t *ctx); | |
| 71 static void ngx_resolver_resend_handler(ngx_event_t *ev); | |
| 72 static time_t ngx_resolver_resend(ngx_resolver_t *r, ngx_rbtree_t *tree, | |
| 73 ngx_queue_t *queue); | |
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74 static ngx_uint_t ngx_resolver_resend_empty(ngx_resolver_t *r); |
| 1649 | 75 static void ngx_resolver_read_response(ngx_event_t *rev); |
| 76 static void ngx_resolver_process_response(ngx_resolver_t *r, u_char *buf, | |
| 77 size_t n); | |
| 78 static void ngx_resolver_process_a(ngx_resolver_t *r, u_char *buf, size_t n, | |
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79 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t qtype, |
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80 ngx_uint_t nan, ngx_uint_t ans); |
| 1649 | 81 static void ngx_resolver_process_ptr(ngx_resolver_t *r, u_char *buf, size_t n, |
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82 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan); |
| 1649 | 83 static ngx_resolver_node_t *ngx_resolver_lookup_name(ngx_resolver_t *r, |
| 84 ngx_str_t *name, uint32_t hash); | |
| 85 static ngx_resolver_node_t *ngx_resolver_lookup_addr(ngx_resolver_t *r, | |
| 86 in_addr_t addr); | |
| 87 static void ngx_resolver_rbtree_insert_value(ngx_rbtree_node_t *temp, | |
| 88 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel); | |
| 89 static ngx_int_t ngx_resolver_copy(ngx_resolver_t *r, ngx_str_t *name, | |
| 90 u_char *buf, u_char *src, u_char *last); | |
| 91 static void ngx_resolver_timeout_handler(ngx_event_t *ev); | |
| 92 static void ngx_resolver_free_node(ngx_resolver_t *r, ngx_resolver_node_t *rn); | |
| 93 static void *ngx_resolver_alloc(ngx_resolver_t *r, size_t size); | |
| 1903 | 94 static void *ngx_resolver_calloc(ngx_resolver_t *r, size_t size); |
| 1649 | 95 static void ngx_resolver_free(ngx_resolver_t *r, void *p); |
| 96 static void ngx_resolver_free_locked(ngx_resolver_t *r, void *p); | |
| 97 static void *ngx_resolver_dup(ngx_resolver_t *r, void *src, size_t size); | |
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98 static ngx_addr_t *ngx_resolver_export(ngx_resolver_t *r, |
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99 ngx_resolver_node_t *rn, ngx_uint_t rotate); |
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100 static u_char *ngx_resolver_log_error(ngx_log_t *log, u_char *buf, size_t len); |
| 1649 | 101 |
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102 #if (NGX_HAVE_INET6) |
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103 static void ngx_resolver_rbtree_insert_addr6_value(ngx_rbtree_node_t *temp, |
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104 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel); |
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105 static ngx_resolver_node_t *ngx_resolver_lookup_addr6(ngx_resolver_t *r, |
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106 struct in6_addr *addr, uint32_t hash); |
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107 #endif |
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108 |
| 1649 | 109 |
| 110 ngx_resolver_t * | |
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111 ngx_resolver_create(ngx_conf_t *cf, ngx_str_t *names, ngx_uint_t n) |
| 1649 | 112 { |
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113 ngx_str_t s; |
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114 ngx_url_t u; |
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115 ngx_uint_t i, j; |
| 1649 | 116 ngx_resolver_t *r; |
| 1906 | 117 ngx_pool_cleanup_t *cln; |
| 1649 | 118 ngx_udp_connection_t *uc; |
| 119 | |
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120 cln = ngx_pool_cleanup_add(cf->pool, 0); |
| 1906 | 121 if (cln == NULL) { |
| 122 return NULL; | |
| 123 } | |
| 124 | |
| 125 cln->handler = ngx_resolver_cleanup; | |
| 126 | |
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127 r = ngx_calloc(sizeof(ngx_resolver_t), cf->log); |
| 1649 | 128 if (r == NULL) { |
| 129 return NULL; | |
| 130 } | |
| 131 | |
| 1906 | 132 cln->data = r; |
| 133 | |
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134 r->event = ngx_calloc(sizeof(ngx_event_t), cf->log); |
| 1649 | 135 if (r->event == NULL) { |
| 136 return NULL; | |
| 137 } | |
| 138 | |
| 1687 | 139 ngx_rbtree_init(&r->name_rbtree, &r->name_sentinel, |
| 140 ngx_resolver_rbtree_insert_value); | |
| 141 | |
| 142 ngx_rbtree_init(&r->addr_rbtree, &r->addr_sentinel, | |
| 143 ngx_rbtree_insert_value); | |
| 1649 | 144 |
| 1685 | 145 ngx_queue_init(&r->name_resend_queue); |
| 146 ngx_queue_init(&r->addr_resend_queue); | |
| 147 | |
| 148 ngx_queue_init(&r->name_expire_queue); | |
| 149 ngx_queue_init(&r->addr_expire_queue); | |
| 1649 | 150 |
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151 #if (NGX_HAVE_INET6) |
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152 r->ipv6 = 1; |
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153 |
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154 ngx_rbtree_init(&r->addr6_rbtree, &r->addr6_sentinel, |
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155 ngx_resolver_rbtree_insert_addr6_value); |
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156 |
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157 ngx_queue_init(&r->addr6_resend_queue); |
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158 |
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159 ngx_queue_init(&r->addr6_expire_queue); |
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160 #endif |
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161 |
| 1649 | 162 r->event->handler = ngx_resolver_resend_handler; |
| 163 r->event->data = r; | |
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164 r->event->log = &cf->cycle->new_log; |
| 1649 | 165 r->ident = -1; |
| 166 | |
| 167 r->resend_timeout = 5; | |
| 168 r->expire = 30; | |
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169 r->valid = 0; |
| 1649 | 170 |
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171 r->log = &cf->cycle->new_log; |
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172 r->log_level = NGX_LOG_ERR; |
| 1649 | 173 |
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174 if (n) { |
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175 if (ngx_array_init(&r->udp_connections, cf->pool, n, |
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176 sizeof(ngx_udp_connection_t)) |
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177 != NGX_OK) |
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178 { |
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179 return NULL; |
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180 } |
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181 } |
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182 |
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183 for (i = 0; i < n; i++) { |
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184 if (ngx_strncmp(names[i].data, "valid=", 6) == 0) { |
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185 s.len = names[i].len - 6; |
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186 s.data = names[i].data + 6; |
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187 |
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188 r->valid = ngx_parse_time(&s, 1); |
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189 |
| 4474 | 190 if (r->valid == (time_t) NGX_ERROR) { |
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191 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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192 "invalid parameter: %V", &names[i]); |
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193 return NULL; |
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194 } |
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195 |
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196 continue; |
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197 } |
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198 |
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199 #if (NGX_HAVE_INET6) |
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200 if (ngx_strncmp(names[i].data, "ipv6=", 5) == 0) { |
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201 |
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202 if (ngx_strcmp(&names[i].data[5], "on") == 0) { |
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203 r->ipv6 = 1; |
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204 |
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205 } else if (ngx_strcmp(&names[i].data[5], "off") == 0) { |
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206 r->ipv6 = 0; |
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207 |
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208 } else { |
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209 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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210 "invalid parameter: %V", &names[i]); |
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211 return NULL; |
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212 } |
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213 |
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214 continue; |
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215 } |
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216 #endif |
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217 |
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218 ngx_memzero(&u, sizeof(ngx_url_t)); |
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219 |
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220 u.url = names[i]; |
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221 u.default_port = 53; |
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222 |
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223 if (ngx_parse_url(cf->pool, &u) != NGX_OK) { |
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224 if (u.err) { |
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225 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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226 "%s in resolver \"%V\"", |
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227 u.err, &u.url); |
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228 } |
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229 |
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230 return NULL; |
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231 } |
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232 |
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233 uc = ngx_array_push_n(&r->udp_connections, u.naddrs); |
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234 if (uc == NULL) { |
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235 return NULL; |
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236 } |
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237 |
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238 ngx_memzero(uc, u.naddrs * sizeof(ngx_udp_connection_t)); |
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239 |
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240 for (j = 0; j < u.naddrs; j++) { |
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241 uc[j].sockaddr = u.addrs[j].sockaddr; |
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242 uc[j].socklen = u.addrs[j].socklen; |
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243 uc[j].server = u.addrs[j].name; |
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244 } |
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245 } |
| 1649 | 246 |
| 247 return r; | |
| 248 } | |
| 249 | |
| 250 | |
| 1906 | 251 static void |
| 252 ngx_resolver_cleanup(void *data) | |
| 253 { | |
| 254 ngx_resolver_t *r = data; | |
| 255 | |
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256 ngx_uint_t i; |
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257 ngx_udp_connection_t *uc; |
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258 |
| 1906 | 259 if (r) { |
| 260 ngx_log_debug0(NGX_LOG_DEBUG_CORE, ngx_cycle->log, 0, | |
| 261 "cleanup resolver"); | |
| 262 | |
| 263 ngx_resolver_cleanup_tree(r, &r->name_rbtree); | |
| 264 | |
| 265 ngx_resolver_cleanup_tree(r, &r->addr_rbtree); | |
| 266 | |
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267 #if (NGX_HAVE_INET6) |
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268 ngx_resolver_cleanup_tree(r, &r->addr6_rbtree); |
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269 #endif |
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270 |
| 1906 | 271 if (r->event) { |
| 272 ngx_free(r->event); | |
| 273 } | |
| 274 | |
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275 |
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276 uc = r->udp_connections.elts; |
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277 |
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278 for (i = 0; i < r->udp_connections.nelts; i++) { |
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279 if (uc[i].connection) { |
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280 ngx_close_connection(uc[i].connection); |
| 1906 | 281 } |
| 282 } | |
| 283 | |
| 284 ngx_free(r); | |
| 285 } | |
| 286 } | |
| 287 | |
| 288 | |
| 289 static void | |
| 290 ngx_resolver_cleanup_tree(ngx_resolver_t *r, ngx_rbtree_t *tree) | |
| 291 { | |
| 292 ngx_resolver_ctx_t *ctx, *next; | |
| 293 ngx_resolver_node_t *rn; | |
| 294 | |
| 295 while (tree->root != tree->sentinel) { | |
| 296 | |
|
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297 rn = ngx_resolver_node(ngx_rbtree_min(tree->root, tree->sentinel)); |
| 1906 | 298 |
| 299 ngx_queue_remove(&rn->queue); | |
| 300 | |
| 301 for (ctx = rn->waiting; ctx; ctx = next) { | |
|
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302 next = ctx->next; |
| 1906 | 303 |
| 304 if (ctx->event) { | |
| 305 ngx_resolver_free(r, ctx->event); | |
| 306 } | |
| 307 | |
| 308 ngx_resolver_free(r, ctx); | |
| 309 } | |
| 310 | |
| 311 ngx_rbtree_delete(tree, &rn->node); | |
| 312 | |
| 313 ngx_resolver_free_node(r, rn); | |
| 314 } | |
| 315 } | |
| 316 | |
| 317 | |
| 1649 | 318 ngx_resolver_ctx_t * |
| 319 ngx_resolve_start(ngx_resolver_t *r, ngx_resolver_ctx_t *temp) | |
| 320 { | |
| 321 in_addr_t addr; | |
| 322 ngx_resolver_ctx_t *ctx; | |
| 323 | |
| 324 if (temp) { | |
| 325 addr = ngx_inet_addr(temp->name.data, temp->name.len); | |
| 326 | |
| 327 if (addr != INADDR_NONE) { | |
| 328 temp->resolver = r; | |
| 329 temp->state = NGX_OK; | |
| 330 temp->naddrs = 1; | |
| 331 temp->addrs = &temp->addr; | |
|
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332 temp->addr.sockaddr = (struct sockaddr *) &temp->sin; |
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333 temp->addr.socklen = sizeof(struct sockaddr_in); |
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334 ngx_memzero(&temp->sin, sizeof(struct sockaddr_in)); |
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335 temp->sin.sin_family = AF_INET; |
|
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336 temp->sin.sin_addr.s_addr = addr; |
| 1649 | 337 temp->quick = 1; |
| 338 | |
| 339 return temp; | |
| 340 } | |
| 341 } | |
| 342 | |
|
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343 if (r->udp_connections.nelts == 0) { |
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344 return NGX_NO_RESOLVER; |
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345 } |
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346 |
| 1649 | 347 ctx = ngx_resolver_calloc(r, sizeof(ngx_resolver_ctx_t)); |
| 348 | |
| 349 if (ctx) { | |
| 350 ctx->resolver = r; | |
| 351 } | |
| 352 | |
| 353 return ctx; | |
| 354 } | |
| 355 | |
| 356 | |
| 357 ngx_int_t | |
| 358 ngx_resolve_name(ngx_resolver_ctx_t *ctx) | |
| 359 { | |
| 360 ngx_int_t rc; | |
| 361 ngx_resolver_t *r; | |
| 362 | |
| 363 r = ctx->resolver; | |
| 364 | |
|
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Yichun Zhang <agentzh@gmail.com>
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|
365 if (ctx->name.len > 0 && ctx->name.data[ctx->name.len - 1] == '.') { |
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366 ctx->name.len--; |
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367 } |
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|
368 |
| 1649 | 369 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, |
| 370 "resolve: \"%V\"", &ctx->name); | |
| 371 | |
| 372 if (ctx->quick) { | |
| 373 ctx->handler(ctx); | |
| 374 return NGX_OK; | |
| 375 } | |
| 376 | |
| 377 /* lock name mutex */ | |
| 378 | |
| 379 rc = ngx_resolve_name_locked(r, ctx); | |
| 380 | |
| 381 if (rc == NGX_OK) { | |
| 382 return NGX_OK; | |
| 383 } | |
| 384 | |
| 385 /* unlock name mutex */ | |
| 386 | |
| 387 if (rc == NGX_AGAIN) { | |
| 388 return NGX_OK; | |
| 389 } | |
| 390 | |
|
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|
391 /* NGX_ERROR */ |
| 1649 | 392 |
| 393 if (ctx->event) { | |
|
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|
394 ngx_resolver_free(r, ctx->event); |
| 1649 | 395 } |
| 396 | |
|
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|
397 ngx_resolver_free(r, ctx); |
| 1649 | 398 |
| 399 return NGX_ERROR; | |
| 400 } | |
| 401 | |
| 402 | |
| 403 void | |
| 404 ngx_resolve_name_done(ngx_resolver_ctx_t *ctx) | |
| 405 { | |
| 406 uint32_t hash; | |
| 407 ngx_resolver_t *r; | |
| 408 ngx_resolver_ctx_t *w, **p; | |
| 409 ngx_resolver_node_t *rn; | |
| 410 | |
| 411 r = ctx->resolver; | |
| 412 | |
| 413 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, | |
| 414 "resolve name done: %i", ctx->state); | |
| 415 | |
| 416 if (ctx->quick) { | |
| 417 return; | |
| 418 } | |
| 419 | |
| 420 if (ctx->event && ctx->event->timer_set) { | |
| 421 ngx_del_timer(ctx->event); | |
| 422 } | |
| 423 | |
| 424 /* lock name mutex */ | |
| 425 | |
|
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|
426 if (ctx->state == NGX_AGAIN) { |
| 1649 | 427 |
| 428 hash = ngx_crc32_short(ctx->name.data, ctx->name.len); | |
| 429 | |
| 430 rn = ngx_resolver_lookup_name(r, &ctx->name, hash); | |
| 431 | |
| 432 if (rn) { | |
| 433 p = &rn->waiting; | |
| 434 w = rn->waiting; | |
| 435 | |
| 436 while (w) { | |
| 437 if (w == ctx) { | |
| 438 *p = w->next; | |
| 439 | |
| 440 goto done; | |
| 441 } | |
| 442 | |
| 443 p = &w->next; | |
| 444 w = w->next; | |
| 445 } | |
| 446 } | |
| 447 | |
| 448 ngx_log_error(NGX_LOG_ALERT, r->log, 0, | |
| 449 "could not cancel %V resolving", &ctx->name); | |
| 450 } | |
| 451 | |
| 452 done: | |
| 453 | |
| 454 ngx_resolver_expire(r, &r->name_rbtree, &r->name_expire_queue); | |
| 455 | |
| 456 /* unlock name mutex */ | |
| 457 | |
|
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diff
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|
458 /* lock alloc mutex */ |
|
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|
459 |
|
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460 if (ctx->event) { |
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461 ngx_resolver_free_locked(r, ctx->event); |
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462 } |
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463 |
|
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changeset
|
464 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
|
465 |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
466 /* unlock alloc mutex */ |
|
6196
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
467 |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
468 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
|
469 ngx_del_timer(r->event); |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
470 } |
| 1649 | 471 } |
| 472 | |
| 473 | |
| 474 static ngx_int_t | |
| 475 ngx_resolve_name_locked(ngx_resolver_t *r, ngx_resolver_ctx_t *ctx) | |
| 476 { | |
| 477 uint32_t hash; | |
|
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
478 ngx_int_t rc; |
| 1649 | 479 ngx_uint_t naddrs; |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
480 ngx_addr_t *addrs; |
| 1649 | 481 ngx_resolver_ctx_t *next; |
| 482 ngx_resolver_node_t *rn; | |
| 483 | |
|
5479
c0d6eae5a1c5
Resolver: lookups are case-insensitive.
Ruslan Ermilov <ru@nginx.com>
parents:
5478
diff
changeset
|
484 ngx_strlow(ctx->name.data, ctx->name.data, ctx->name.len); |
|
c0d6eae5a1c5
Resolver: lookups are case-insensitive.
Ruslan Ermilov <ru@nginx.com>
parents:
5478
diff
changeset
|
485 |
| 1649 | 486 hash = ngx_crc32_short(ctx->name.data, ctx->name.len); |
| 487 | |
| 488 rn = ngx_resolver_lookup_name(r, &ctx->name, hash); | |
| 489 | |
| 490 if (rn) { | |
| 491 | |
| 492 if (rn->valid >= ngx_time()) { | |
| 493 | |
| 494 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, "resolve cached"); | |
| 495 | |
| 496 ngx_queue_remove(&rn->queue); | |
| 497 | |
| 498 rn->expire = ngx_time() + r->expire; | |
| 499 | |
| 500 ngx_queue_insert_head(&r->name_expire_queue, &rn->queue); | |
| 501 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
502 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
|
503 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
504 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
|
505 #endif |
| 1649 | 506 |
| 507 if (naddrs) { | |
| 508 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
509 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
|
510 addrs = NULL; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
511 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
512 } else { |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
513 addrs = ngx_resolver_export(r, rn, 1); |
| 1649 | 514 if (addrs == NULL) { |
| 515 return NGX_ERROR; | |
| 516 } | |
| 517 } | |
| 518 | |
| 519 ctx->next = rn->waiting; | |
| 520 rn->waiting = NULL; | |
| 521 | |
| 522 /* unlock name mutex */ | |
| 523 | |
| 524 do { | |
| 525 ctx->state = NGX_OK; | |
| 526 ctx->naddrs = naddrs; | |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
527 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
528 if (addrs == NULL) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
529 ctx->addrs = &ctx->addr; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
530 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
|
531 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
|
532 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
|
533 ctx->sin.sin_family = AF_INET; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
534 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
|
535 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
536 } else { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
537 ctx->addrs = addrs; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
538 } |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
539 |
| 1649 | 540 next = ctx->next; |
| 541 | |
| 542 ctx->handler(ctx); | |
| 543 | |
| 544 ctx = next; | |
| 545 } while (ctx); | |
| 546 | |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
547 if (addrs != NULL) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
548 ngx_resolver_free(r, addrs->sockaddr); |
| 1649 | 549 ngx_resolver_free(r, addrs); |
| 550 } | |
| 551 | |
| 552 return NGX_OK; | |
| 553 } | |
| 554 | |
| 555 /* NGX_RESOLVE_CNAME */ | |
| 556 | |
| 1969 | 557 if (ctx->recursion++ < NGX_RESOLVER_MAX_RECURSION) { |
| 558 | |
| 559 ctx->name.len = rn->cnlen; | |
| 560 ctx->name.data = rn->u.cname; | |
| 561 | |
| 562 return ngx_resolve_name_locked(r, ctx); | |
| 563 } | |
| 564 | |
| 565 ctx->next = rn->waiting; | |
| 566 rn->waiting = NULL; | |
| 567 | |
| 568 /* unlock name mutex */ | |
| 569 | |
| 570 do { | |
| 571 ctx->state = NGX_RESOLVE_NXDOMAIN; | |
| 572 next = ctx->next; | |
| 573 | |
| 574 ctx->handler(ctx); | |
| 575 | |
| 576 ctx = next; | |
| 577 } while (ctx); | |
| 578 | |
| 579 return NGX_OK; | |
| 1649 | 580 } |
| 581 | |
| 582 if (rn->waiting) { | |
| 583 | |
| 584 ctx->next = rn->waiting; | |
| 585 rn->waiting = ctx; | |
| 3297 | 586 ctx->state = NGX_AGAIN; |
| 1649 | 587 |
| 588 return NGX_AGAIN; | |
| 589 } | |
| 590 | |
| 591 ngx_queue_remove(&rn->queue); | |
| 592 | |
| 593 /* lock alloc mutex */ | |
| 594 | |
|
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
595 if (rn->query) { |
|
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
596 ngx_resolver_free_locked(r, rn->query); |
|
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
597 rn->query = NULL; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
598 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
599 rn->query6 = NULL; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
600 #endif |
|
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
601 } |
| 1649 | 602 |
| 603 if (rn->cnlen) { | |
| 604 ngx_resolver_free_locked(r, rn->u.cname); | |
| 605 } | |
| 606 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
607 if (rn->naddrs > 1 && rn->naddrs != (u_short) -1) { |
| 1649 | 608 ngx_resolver_free_locked(r, rn->u.addrs); |
| 609 } | |
| 610 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
611 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
612 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
|
613 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
|
614 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
615 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
616 |
| 1649 | 617 /* unlock alloc mutex */ |
| 618 | |
| 619 } else { | |
| 620 | |
| 621 rn = ngx_resolver_alloc(r, sizeof(ngx_resolver_node_t)); | |
| 622 if (rn == NULL) { | |
| 623 return NGX_ERROR; | |
| 624 } | |
| 625 | |
| 626 rn->name = ngx_resolver_dup(r, ctx->name.data, ctx->name.len); | |
| 627 if (rn->name == NULL) { | |
| 628 ngx_resolver_free(r, rn); | |
| 629 return NGX_ERROR; | |
| 630 } | |
| 631 | |
| 632 rn->node.key = hash; | |
| 633 rn->nlen = (u_short) ctx->name.len; | |
|
1960
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
634 rn->query = NULL; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
635 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
636 rn->query6 = NULL; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
637 #endif |
| 1649 | 638 |
| 639 ngx_rbtree_insert(&r->name_rbtree, &rn->node); | |
| 640 } | |
| 641 | |
|
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
642 rc = ngx_resolver_create_name_query(rn, ctx); |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
643 |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
644 if (rc == NGX_ERROR) { |
| 1649 | 645 goto failed; |
| 646 } | |
| 647 | |
|
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
648 if (rc == NGX_DECLINED) { |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
649 ngx_rbtree_delete(&r->name_rbtree, &rn->node); |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
650 |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
651 ngx_resolver_free(r, rn->query); |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
652 ngx_resolver_free(r, rn->name); |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
653 ngx_resolver_free(r, rn); |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
654 |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
655 ctx->state = NGX_RESOLVE_NXDOMAIN; |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
656 ctx->handler(ctx); |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
657 |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
658 return NGX_OK; |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
659 } |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
660 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
661 rn->naddrs = (u_short) -1; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
662 #if (NGX_HAVE_INET6) |
|
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
663 rn->naddrs6 = r->ipv6 ? (u_short) -1 : 0; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
664 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
665 |
| 1649 | 666 if (ngx_resolver_send_query(r, rn) != NGX_OK) { |
| 667 goto failed; | |
| 668 } | |
| 669 | |
| 670 if (ctx->event == NULL) { | |
| 671 ctx->event = ngx_resolver_calloc(r, sizeof(ngx_event_t)); | |
| 672 if (ctx->event == NULL) { | |
| 673 goto failed; | |
| 674 } | |
| 675 | |
| 676 ctx->event->handler = ngx_resolver_timeout_handler; | |
|
5812
954867a2f0a6
Resolver: notify all waiting requests on timeout.
Ruslan Ermilov <ru@nginx.com>
parents:
5768
diff
changeset
|
677 ctx->event->data = rn; |
| 1649 | 678 ctx->event->log = r->log; |
|
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
679 rn->ident = -1; |
| 1649 | 680 |
| 681 ngx_add_timer(ctx->event, ctx->timeout); | |
| 682 } | |
| 683 | |
| 684 if (ngx_queue_empty(&r->name_resend_queue)) { | |
| 685 ngx_add_timer(r->event, (ngx_msec_t) (r->resend_timeout * 1000)); | |
| 686 } | |
| 687 | |
| 688 rn->expire = ngx_time() + r->resend_timeout; | |
| 689 | |
| 690 ngx_queue_insert_head(&r->name_resend_queue, &rn->queue); | |
| 691 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
692 rn->code = 0; |
| 1649 | 693 rn->cnlen = 0; |
| 694 rn->valid = 0; | |
|
5485
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
695 rn->ttl = NGX_MAX_UINT32_VALUE; |
| 1649 | 696 rn->waiting = ctx; |
| 697 | |
| 698 ctx->state = NGX_AGAIN; | |
| 699 | |
| 700 return NGX_AGAIN; | |
| 701 | |
| 702 failed: | |
| 703 | |
| 704 ngx_rbtree_delete(&r->name_rbtree, &rn->node); | |
| 705 | |
|
1960
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
706 if (rn->query) { |
|
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
707 ngx_resolver_free(r, rn->query); |
|
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
708 } |
|
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
709 |
| 1649 | 710 ngx_resolver_free(r, rn->name); |
| 711 | |
| 712 ngx_resolver_free(r, rn); | |
| 713 | |
| 714 return NGX_ERROR; | |
| 715 } | |
| 583 | 716 |
| 717 | |
| 718 ngx_int_t | |
| 1649 | 719 ngx_resolve_addr(ngx_resolver_ctx_t *ctx) |
| 720 { | |
|
2484
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
721 u_char *name; |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
722 in_addr_t addr; |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
723 ngx_queue_t *resend_queue, *expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
724 ngx_rbtree_t *tree; |
| 1649 | 725 ngx_resolver_t *r; |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
726 struct sockaddr_in *sin; |
| 1649 | 727 ngx_resolver_node_t *rn; |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
728 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
729 uint32_t hash; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
730 struct sockaddr_in6 *sin6; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
731 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
732 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
733 #if (NGX_SUPPRESS_WARN) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
734 addr = 0; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
735 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
736 hash = 0; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
737 sin6 = NULL; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
738 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
739 #endif |
| 1649 | 740 |
| 741 r = ctx->resolver; | |
| 742 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
743 switch (ctx->addr.sockaddr->sa_family) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
744 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
745 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
746 case AF_INET6: |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
747 sin6 = (struct sockaddr_in6 *) ctx->addr.sockaddr; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
748 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
|
749 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
750 /* lock addr mutex */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
751 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
752 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
|
753 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
754 tree = &r->addr6_rbtree; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
755 resend_queue = &r->addr6_resend_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
756 expire_queue = &r->addr6_expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
757 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
758 break; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
759 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
760 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
761 default: /* AF_INET */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
762 sin = (struct sockaddr_in *) ctx->addr.sockaddr; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
763 addr = ntohl(sin->sin_addr.s_addr); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
764 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
765 /* lock addr mutex */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
766 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
767 rn = ngx_resolver_lookup_addr(r, addr); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
768 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
769 tree = &r->addr_rbtree; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
770 resend_queue = &r->addr_resend_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
771 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
|
772 } |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
773 |
| 1649 | 774 if (rn) { |
| 775 | |
| 776 if (rn->valid >= ngx_time()) { | |
| 777 | |
| 778 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, "resolve cached"); | |
| 779 | |
| 780 ngx_queue_remove(&rn->queue); | |
| 781 | |
| 782 rn->expire = ngx_time() + r->expire; | |
| 783 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
784 ngx_queue_insert_head(expire_queue, &rn->queue); |
| 1649 | 785 |
|
2484
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
786 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
|
787 if (name == NULL) { |
| 1649 | 788 goto failed; |
| 789 } | |
| 790 | |
|
2484
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
791 ctx->name.len = rn->nlen; |
|
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
792 ctx->name.data = name; |
|
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
793 |
| 1649 | 794 /* unlock addr mutex */ |
| 795 | |
| 796 ctx->state = NGX_OK; | |
| 797 | |
| 798 ctx->handler(ctx); | |
| 799 | |
|
2484
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
800 ngx_resolver_free(r, name); |
| 1649 | 801 |
| 802 return NGX_OK; | |
| 803 } | |
| 804 | |
| 805 if (rn->waiting) { | |
| 806 | |
| 807 ctx->next = rn->waiting; | |
| 808 rn->waiting = ctx; | |
| 3297 | 809 ctx->state = NGX_AGAIN; |
| 1649 | 810 |
|
2487
9b4dce95c744
fix return code, this fixes segfault when two or more
Igor Sysoev <igor@sysoev.ru>
parents:
2486
diff
changeset
|
811 /* unlock addr mutex */ |
|
9b4dce95c744
fix return code, this fixes segfault when two or more
Igor Sysoev <igor@sysoev.ru>
parents:
2486
diff
changeset
|
812 |
|
9b4dce95c744
fix return code, this fixes segfault when two or more
Igor Sysoev <igor@sysoev.ru>
parents:
2486
diff
changeset
|
813 return NGX_OK; |
| 1649 | 814 } |
| 815 | |
| 816 ngx_queue_remove(&rn->queue); | |
| 817 | |
| 818 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
|
819 rn->query = NULL; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
820 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
821 rn->query6 = NULL; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
822 #endif |
| 1649 | 823 |
| 824 } else { | |
| 825 rn = ngx_resolver_alloc(r, sizeof(ngx_resolver_node_t)); | |
| 826 if (rn == NULL) { | |
| 827 goto failed; | |
| 828 } | |
| 829 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
830 switch (ctx->addr.sockaddr->sa_family) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
831 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
832 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
833 case AF_INET6: |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
834 rn->addr6 = sin6->sin6_addr; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
835 rn->node.key = hash; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
836 break; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
837 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
838 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
839 default: /* AF_INET */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
840 rn->node.key = addr; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
841 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
842 |
|
1960
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
843 rn->query = NULL; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
844 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
845 rn->query6 = NULL; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
846 #endif |
| 1649 | 847 |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
848 ngx_rbtree_insert(tree, &rn->node); |
| 1649 | 849 } |
| 850 | |
| 851 if (ngx_resolver_create_addr_query(rn, ctx) != NGX_OK) { | |
| 852 goto failed; | |
| 853 } | |
| 854 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
855 rn->naddrs = (u_short) -1; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
856 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
857 rn->naddrs6 = (u_short) -1; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
858 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
859 |
| 1649 | 860 if (ngx_resolver_send_query(r, rn) != NGX_OK) { |
| 861 goto failed; | |
| 862 } | |
| 863 | |
| 864 ctx->event = ngx_resolver_calloc(r, sizeof(ngx_event_t)); | |
| 865 if (ctx->event == NULL) { | |
| 866 goto failed; | |
| 867 } | |
| 868 | |
| 869 ctx->event->handler = ngx_resolver_timeout_handler; | |
|
5812
954867a2f0a6
Resolver: notify all waiting requests on timeout.
Ruslan Ermilov <ru@nginx.com>
parents:
5768
diff
changeset
|
870 ctx->event->data = rn; |
| 1649 | 871 ctx->event->log = r->log; |
|
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
872 rn->ident = -1; |
| 1649 | 873 |
| 874 ngx_add_timer(ctx->event, ctx->timeout); | |
| 875 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
876 if (ngx_queue_empty(resend_queue)) { |
| 1649 | 877 ngx_add_timer(r->event, (ngx_msec_t) (r->resend_timeout * 1000)); |
| 878 } | |
| 879 | |
| 880 rn->expire = ngx_time() + r->resend_timeout; | |
| 881 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
882 ngx_queue_insert_head(resend_queue, &rn->queue); |
| 1649 | 883 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
884 rn->code = 0; |
| 1649 | 885 rn->cnlen = 0; |
| 886 rn->name = NULL; | |
| 887 rn->nlen = 0; | |
| 888 rn->valid = 0; | |
|
5485
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
889 rn->ttl = NGX_MAX_UINT32_VALUE; |
| 1649 | 890 rn->waiting = ctx; |
| 891 | |
| 892 /* unlock addr mutex */ | |
| 893 | |
| 894 ctx->state = NGX_AGAIN; | |
| 895 | |
| 896 return NGX_OK; | |
| 897 | |
| 898 failed: | |
| 899 | |
| 900 if (rn) { | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
901 ngx_rbtree_delete(tree, &rn->node); |
| 1649 | 902 |
|
1960
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
903 if (rn->query) { |
|
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
904 ngx_resolver_free(r, rn->query); |
|
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
905 } |
|
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
906 |
| 1649 | 907 ngx_resolver_free(r, rn); |
| 908 } | |
| 909 | |
| 910 /* unlock addr mutex */ | |
| 911 | |
| 912 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
|
913 ngx_resolver_free(r, ctx->event); |
| 1649 | 914 } |
| 915 | |
|
1904
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
916 ngx_resolver_free(r, ctx); |
| 1649 | 917 |
| 918 return NGX_ERROR; | |
| 919 } | |
| 920 | |
| 921 | |
| 922 void | |
| 923 ngx_resolve_addr_done(ngx_resolver_ctx_t *ctx) | |
| 924 { | |
| 925 in_addr_t addr; | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
926 ngx_queue_t *expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
927 ngx_rbtree_t *tree; |
| 1649 | 928 ngx_resolver_t *r; |
| 929 ngx_resolver_ctx_t *w, **p; | |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
930 struct sockaddr_in *sin; |
| 1649 | 931 ngx_resolver_node_t *rn; |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
932 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
933 uint32_t hash; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
934 struct sockaddr_in6 *sin6; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
935 #endif |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
936 |
| 1649 | 937 r = ctx->resolver; |
| 938 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
939 switch (ctx->addr.sockaddr->sa_family) { |
|
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 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
942 case AF_INET6: |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
943 tree = &r->addr6_rbtree; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
944 expire_queue = &r->addr6_expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
945 break; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
946 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
947 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
948 default: /* AF_INET */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
949 tree = &r->addr_rbtree; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
950 expire_queue = &r->addr_expire_queue; |
|
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 |
| 1649 | 953 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, |
| 954 "resolve addr done: %i", ctx->state); | |
| 955 | |
| 956 if (ctx->event && ctx->event->timer_set) { | |
| 957 ngx_del_timer(ctx->event); | |
| 958 } | |
| 959 | |
| 960 /* lock addr mutex */ | |
| 961 | |
|
5812
954867a2f0a6
Resolver: notify all waiting requests on timeout.
Ruslan Ermilov <ru@nginx.com>
parents:
5768
diff
changeset
|
962 if (ctx->state == NGX_AGAIN) { |
| 1649 | 963 |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
964 switch (ctx->addr.sockaddr->sa_family) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
965 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
966 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
967 case AF_INET6: |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
968 sin6 = (struct sockaddr_in6 *) ctx->addr.sockaddr; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
969 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
|
970 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
|
971 break; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
972 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
973 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
974 default: /* AF_INET */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
975 sin = (struct sockaddr_in *) ctx->addr.sockaddr; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
976 addr = ntohl(sin->sin_addr.s_addr); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
977 rn = ngx_resolver_lookup_addr(r, addr); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
978 } |
| 1649 | 979 |
| 980 if (rn) { | |
| 981 p = &rn->waiting; | |
| 982 w = rn->waiting; | |
| 983 | |
| 984 while (w) { | |
| 985 if (w == ctx) { | |
| 986 *p = w->next; | |
| 987 | |
| 988 goto done; | |
| 989 } | |
| 990 | |
| 991 p = &w->next; | |
| 992 w = w->next; | |
| 993 } | |
| 994 } | |
| 995 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
996 { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
997 u_char text[NGX_SOCKADDR_STRLEN]; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
998 ngx_str_t addrtext; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
999 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1000 addrtext.data = text; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1001 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
|
1002 text, NGX_SOCKADDR_STRLEN, 0); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1003 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1004 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
|
1005 "could not cancel %V resolving", &addrtext); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1006 } |
| 1649 | 1007 } |
| 1008 | |
| 1009 done: | |
| 1010 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1011 ngx_resolver_expire(r, tree, expire_queue); |
| 1649 | 1012 |
| 1013 /* unlock addr mutex */ | |
| 1014 | |
|
1904
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1015 /* 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
|
1016 |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1017 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
|
1018 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
|
1019 } |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1020 |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1021 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
|
1022 |
|
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1023 /* unlock alloc mutex */ |
|
6196
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1024 |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1025 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
|
1026 ngx_del_timer(r->event); |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1027 } |
| 1649 | 1028 } |
| 1029 | |
| 1030 | |
| 1031 static void | |
| 1032 ngx_resolver_expire(ngx_resolver_t *r, ngx_rbtree_t *tree, ngx_queue_t *queue) | |
| 1033 { | |
| 1034 time_t now; | |
| 1035 ngx_uint_t i; | |
| 1036 ngx_queue_t *q; | |
| 1037 ngx_resolver_node_t *rn; | |
| 1038 | |
| 1039 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver expire"); | |
| 1040 | |
| 1041 now = ngx_time(); | |
| 1042 | |
| 1043 for (i = 0; i < 2; i++) { | |
| 1044 if (ngx_queue_empty(queue)) { | |
| 1045 return; | |
| 1046 } | |
| 1047 | |
| 1048 q = ngx_queue_last(queue); | |
| 1049 | |
| 1050 rn = ngx_queue_data(q, ngx_resolver_node_t, queue); | |
| 1051 | |
| 1052 if (now <= rn->expire) { | |
| 1053 return; | |
| 1054 } | |
| 1055 | |
| 1774 | 1056 ngx_log_debug2(NGX_LOG_DEBUG_CORE, r->log, 0, |
| 1057 "resolver expire \"%*s\"", (size_t) rn->nlen, rn->name); | |
| 1649 | 1058 |
| 1059 ngx_queue_remove(q); | |
| 1060 | |
| 1061 ngx_rbtree_delete(tree, &rn->node); | |
| 1062 | |
| 1063 ngx_resolver_free_node(r, rn); | |
| 1064 } | |
| 1065 } | |
| 1066 | |
| 1067 | |
| 1068 static ngx_int_t | |
| 1069 ngx_resolver_send_query(ngx_resolver_t *r, ngx_resolver_node_t *rn) | |
| 1070 { | |
| 1071 ssize_t n; | |
| 1072 ngx_udp_connection_t *uc; | |
| 1073 | |
|
4225
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
1074 uc = r->udp_connections.elts; |
|
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
1075 |
|
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
1076 uc = &uc[r->last_connection++]; |
|
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
1077 if (r->last_connection == r->udp_connections.nelts) { |
|
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
1078 r->last_connection = 0; |
|
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
1079 } |
| 1649 | 1080 |
| 1081 if (uc->connection == NULL) { | |
|
4496
be6c250b827b
Fixed null pointer dereference in resolver (ticket #91).
Maxim Dounin <mdounin@mdounin.ru>
parents:
4474
diff
changeset
|
1082 |
|
be6c250b827b
Fixed null pointer dereference in resolver (ticket #91).
Maxim Dounin <mdounin@mdounin.ru>
parents:
4474
diff
changeset
|
1083 uc->log = *r->log; |
|
be6c250b827b
Fixed null pointer dereference in resolver (ticket #91).
Maxim Dounin <mdounin@mdounin.ru>
parents:
4474
diff
changeset
|
1084 uc->log.handler = ngx_resolver_log_error; |
|
be6c250b827b
Fixed null pointer dereference in resolver (ticket #91).
Maxim Dounin <mdounin@mdounin.ru>
parents:
4474
diff
changeset
|
1085 uc->log.data = uc; |
|
be6c250b827b
Fixed null pointer dereference in resolver (ticket #91).
Maxim Dounin <mdounin@mdounin.ru>
parents:
4474
diff
changeset
|
1086 uc->log.action = "resolving"; |
|
be6c250b827b
Fixed null pointer dereference in resolver (ticket #91).
Maxim Dounin <mdounin@mdounin.ru>
parents:
4474
diff
changeset
|
1087 |
| 1649 | 1088 if (ngx_udp_connect(uc) != NGX_OK) { |
| 1089 return NGX_ERROR; | |
| 1090 } | |
| 1091 | |
| 1092 uc->connection->data = r; | |
| 1093 uc->connection->read->handler = ngx_resolver_read_response; | |
| 1906 | 1094 uc->connection->read->resolver = 1; |
| 1649 | 1095 } |
| 1096 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1097 if (rn->naddrs == (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1098 n = ngx_send(uc->connection, rn->query, rn->qlen); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1099 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1100 if (n == -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1101 return NGX_ERROR; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1102 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1103 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1104 if ((size_t) n != (size_t) rn->qlen) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1105 ngx_log_error(NGX_LOG_CRIT, &uc->log, 0, "send() incomplete"); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1106 return NGX_ERROR; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1107 } |
| 1649 | 1108 } |
| 1109 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1110 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1111 if (rn->query6 && rn->naddrs6 == (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1112 n = ngx_send(uc->connection, rn->query6, rn->qlen); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1113 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1114 if (n == -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1115 return NGX_ERROR; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1116 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1117 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1118 if ((size_t) n != (size_t) rn->qlen) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1119 ngx_log_error(NGX_LOG_CRIT, &uc->log, 0, "send() incomplete"); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1120 return NGX_ERROR; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1121 } |
| 1649 | 1122 } |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1123 #endif |
| 1649 | 1124 |
| 1125 return NGX_OK; | |
| 1126 } | |
| 1127 | |
| 1128 | |
| 1129 static void | |
| 1130 ngx_resolver_resend_handler(ngx_event_t *ev) | |
| 1131 { | |
| 1132 time_t timer, atimer, ntimer; | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1133 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1134 time_t a6timer; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1135 #endif |
| 1649 | 1136 ngx_resolver_t *r; |
| 1137 | |
| 1138 r = ev->data; | |
| 1139 | |
| 1140 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, | |
| 1141 "resolver resend handler"); | |
| 1142 | |
| 1143 /* lock name mutex */ | |
| 1144 | |
| 1145 ntimer = ngx_resolver_resend(r, &r->name_rbtree, &r->name_resend_queue); | |
| 1146 | |
| 1147 /* unlock name mutex */ | |
| 1148 | |
| 1149 /* lock addr mutex */ | |
| 1150 | |
| 1151 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
|
1152 |
| 1649 | 1153 /* unlock addr mutex */ |
| 1154 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1155 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1156 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1157 /* lock addr6 mutex */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1158 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1159 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
|
1160 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1161 /* unlock addr6 mutex */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1162 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1163 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1164 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1165 timer = ntimer; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1166 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1167 if (timer == 0) { |
| 1649 | 1168 timer = atimer; |
| 1169 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1170 } else if (atimer) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1171 timer = ngx_min(timer, atimer); |
| 1649 | 1172 } |
| 1173 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1174 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1175 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1176 if (timer == 0) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1177 timer = a6timer; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1178 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1179 } else if (a6timer) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1180 timer = ngx_min(timer, a6timer); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1181 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1182 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1183 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1184 |
| 1649 | 1185 if (timer) { |
| 1186 ngx_add_timer(r->event, (ngx_msec_t) (timer * 1000)); | |
| 1187 } | |
| 1188 } | |
| 1189 | |
| 1190 | |
| 1191 static time_t | |
| 1192 ngx_resolver_resend(ngx_resolver_t *r, ngx_rbtree_t *tree, ngx_queue_t *queue) | |
| 1193 { | |
| 1194 time_t now; | |
| 1195 ngx_queue_t *q; | |
| 1196 ngx_resolver_node_t *rn; | |
| 1197 | |
| 1198 now = ngx_time(); | |
| 1199 | |
| 1200 for ( ;; ) { | |
| 1201 if (ngx_queue_empty(queue)) { | |
| 1202 return 0; | |
| 1203 } | |
| 1204 | |
| 1205 q = ngx_queue_last(queue); | |
| 1206 | |
| 1207 rn = ngx_queue_data(q, ngx_resolver_node_t, queue); | |
| 1208 | |
| 1209 if (now < rn->expire) { | |
| 1210 return rn->expire - now; | |
| 1211 } | |
| 1212 | |
| 1774 | 1213 ngx_log_debug3(NGX_LOG_DEBUG_CORE, r->log, 0, |
| 1214 "resolver resend \"%*s\" %p", | |
| 1215 (size_t) rn->nlen, rn->name, rn->waiting); | |
| 1649 | 1216 |
| 1217 ngx_queue_remove(q); | |
| 1218 | |
| 1219 if (rn->waiting) { | |
| 1220 | |
|
4683
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1221 (void) ngx_resolver_send_query(r, rn); |
|
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1222 |
|
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1223 rn->expire = now + r->resend_timeout; |
|
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1224 |
|
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1225 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
|
1226 |
|
cf4ee321d195
do not delete failed DNS request if there are waiting clients
Igor Sysoev <igor@sysoev.ru>
parents:
1878
diff
changeset
|
1227 continue; |
| 1649 | 1228 } |
| 1229 | |
| 1230 ngx_rbtree_delete(tree, &rn->node); | |
| 1231 | |
| 1232 ngx_resolver_free_node(r, rn); | |
| 1233 } | |
| 1234 } | |
| 1235 | |
| 1236 | |
|
6196
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1237 static ngx_uint_t |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1238 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
|
1239 { |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1240 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
|
1241 #if (NGX_HAVE_INET6) |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1242 && 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
|
1243 #endif |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1244 && 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
|
1245 } |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1246 |
|
c3ec43580a48
Resolver: canceled resend timer on empty resend queues.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6126
diff
changeset
|
1247 |
| 1649 | 1248 static void |
| 1249 ngx_resolver_read_response(ngx_event_t *rev) | |
| 1250 { | |
| 1251 ssize_t n; | |
| 1252 ngx_connection_t *c; | |
| 1253 u_char buf[NGX_RESOLVER_UDP_SIZE]; | |
| 1254 | |
| 1255 c = rev->data; | |
| 1256 | |
| 1257 do { | |
| 1689 | 1258 n = ngx_udp_recv(c, buf, NGX_RESOLVER_UDP_SIZE); |
| 1259 | |
| 1260 if (n < 0) { | |
| 1649 | 1261 return; |
| 1262 } | |
| 1263 | |
| 1264 ngx_resolver_process_response(c->data, buf, n); | |
| 1265 | |
| 1266 } while (rev->ready); | |
| 1267 } | |
| 1268 | |
| 1269 | |
| 1270 static void | |
| 1271 ngx_resolver_process_response(ngx_resolver_t *r, u_char *buf, size_t n) | |
| 1272 { | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1273 char *err; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1274 ngx_uint_t i, times, ident, qident, flags, code, nqs, nan, |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1275 qtype, qclass; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1276 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1277 ngx_uint_t qident6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1278 #endif |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1279 ngx_queue_t *q; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1280 ngx_resolver_qs_t *qs; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1281 ngx_resolver_hdr_t *response; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1282 ngx_resolver_node_t *rn; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1283 |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1284 if (n < sizeof(ngx_resolver_hdr_t)) { |
| 1649 | 1285 goto short_response; |
| 1286 } | |
| 1287 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1288 response = (ngx_resolver_hdr_t *) buf; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1289 |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1290 ident = (response->ident_hi << 8) + response->ident_lo; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1291 flags = (response->flags_hi << 8) + response->flags_lo; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1292 nqs = (response->nqs_hi << 8) + response->nqs_lo; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1293 nan = (response->nan_hi << 8) + response->nan_lo; |
| 1649 | 1294 |
| 1295 ngx_log_debug6(NGX_LOG_DEBUG_CORE, r->log, 0, | |
|
4653
134ccdf44647
Resolver: fixed format specification.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4643
diff
changeset
|
1296 "resolver DNS response %ui fl:%04Xui %ui/%ui/%ud/%ud", |
| 1649 | 1297 ident, flags, nqs, nan, |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1298 (response->nns_hi << 8) + response->nns_lo, |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1299 (response->nar_hi << 8) + response->nar_lo); |
| 1649 | 1300 |
|
5470
aebdca7e8f8f
Resolver: fixed response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5469
diff
changeset
|
1301 /* response to a standard query */ |
|
aebdca7e8f8f
Resolver: fixed response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5469
diff
changeset
|
1302 if ((flags & 0xf870) != 0x8000) { |
| 1649 | 1303 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
|
1304 "invalid DNS response %ui fl:%04Xui", ident, flags); |
| 1649 | 1305 return; |
| 1306 } | |
| 1307 | |
|
5470
aebdca7e8f8f
Resolver: fixed response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5469
diff
changeset
|
1308 code = flags & 0xf; |
| 1649 | 1309 |
|
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1310 if (code == NGX_RESOLVE_FORMERR) { |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1311 |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1312 times = 0; |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1313 |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1314 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
|
1315 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
|
1316 q = ngx_queue_next(q)) |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1317 { |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1318 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
|
1319 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
|
1320 |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1321 if (qident == ident) { |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1322 goto dns_error_name; |
|
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1323 } |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1324 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1325 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1326 if (rn->query6) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1327 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
|
1328 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1329 if (qident6 == ident) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1330 goto dns_error_name; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1331 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1332 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1333 #endif |
|
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1334 } |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1335 |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1336 goto dns_error; |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1337 } |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1338 |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1339 if (code > NGX_RESOLVE_REFUSED) { |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1340 goto dns_error; |
| 1649 | 1341 } |
| 1342 | |
| 1343 if (nqs != 1) { | |
| 1344 err = "invalid number of questions in DNS response"; | |
| 1345 goto done; | |
| 1346 } | |
| 1347 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1348 i = sizeof(ngx_resolver_hdr_t); |
| 1649 | 1349 |
| 1350 while (i < (ngx_uint_t) n) { | |
| 1351 if (buf[i] == '\0') { | |
| 1352 goto found; | |
| 1353 } | |
| 1354 | |
|
5470
aebdca7e8f8f
Resolver: fixed response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5469
diff
changeset
|
1355 i += 1 + buf[i]; |
| 1649 | 1356 } |
| 1357 | |
| 1358 goto short_response; | |
| 1359 | |
| 1360 found: | |
| 1361 | |
|
5470
aebdca7e8f8f
Resolver: fixed response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5469
diff
changeset
|
1362 if (i++ == sizeof(ngx_resolver_hdr_t)) { |
| 1649 | 1363 err = "zero-length domain name in DNS response"; |
| 1364 goto done; | |
| 1365 } | |
| 1366 | |
| 1367 if (i + sizeof(ngx_resolver_qs_t) + nan * (2 + sizeof(ngx_resolver_an_t)) | |
| 1368 > (ngx_uint_t) n) | |
| 1369 { | |
| 1370 goto short_response; | |
| 1371 } | |
| 1372 | |
| 1373 qs = (ngx_resolver_qs_t *) &buf[i]; | |
| 1374 | |
| 1375 qtype = (qs->type_hi << 8) + qs->type_lo; | |
| 1376 qclass = (qs->class_hi << 8) + qs->class_lo; | |
| 1377 | |
| 1378 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
|
1379 "resolver DNS response qt:%ui cl:%ui", qtype, qclass); |
| 1649 | 1380 |
| 1381 if (qclass != 1) { | |
| 1382 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
|
1383 "unknown query class %ui in DNS response", qclass); |
| 1649 | 1384 return; |
| 1385 } | |
| 1386 | |
| 1387 switch (qtype) { | |
| 1388 | |
| 1389 case NGX_RESOLVE_A: | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1390 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1391 case NGX_RESOLVE_AAAA: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1392 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1393 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1394 ngx_resolver_process_a(r, buf, n, ident, code, qtype, nan, |
|
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
1395 i + sizeof(ngx_resolver_qs_t)); |
| 1649 | 1396 |
| 1397 break; | |
| 1398 | |
| 1399 case NGX_RESOLVE_PTR: | |
| 1400 | |
|
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
1401 ngx_resolver_process_ptr(r, buf, n, ident, code, nan); |
| 1649 | 1402 |
| 1403 break; | |
| 1404 | |
| 1405 default: | |
| 1406 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
|
1407 "unknown query type %ui in DNS response", qtype); |
| 1649 | 1408 return; |
| 1409 } | |
| 1410 | |
| 1411 return; | |
| 1412 | |
| 1413 short_response: | |
| 1414 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1415 err = "short DNS response"; |
| 1649 | 1416 |
| 1417 done: | |
| 1418 | |
| 1419 ngx_log_error(r->log_level, r->log, 0, err); | |
| 1420 | |
| 1421 return; | |
|
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1422 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1423 dns_error_name: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1424 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1425 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
|
1426 "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
|
1427 code, ngx_resolver_strerror(code), ident, |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1428 rn->nlen, rn->name); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1429 return; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1430 |
|
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1431 dns_error: |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1432 |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1433 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
|
1434 "DNS error (%ui: %s), query id:%ui", |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1435 code, ngx_resolver_strerror(code), ident); |
|
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1436 return; |
| 1649 | 1437 } |
| 1438 | |
| 1439 | |
| 1440 static void | |
| 1441 ngx_resolver_process_a(ngx_resolver_t *r, u_char *buf, size_t last, | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1442 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t qtype, |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1443 ngx_uint_t nan, ngx_uint_t ans) |
| 583 | 1444 { |
| 1649 | 1445 char *err; |
| 1446 u_char *cname; | |
| 1447 size_t len; | |
|
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
1448 int32_t ttl; |
| 1649 | 1449 uint32_t hash; |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1450 in_addr_t *addr; |
| 1649 | 1451 ngx_str_t name; |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1452 ngx_addr_t *addrs; |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1453 ngx_uint_t type, class, qident, naddrs, a, i, n, start; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1454 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1455 struct in6_addr *addr6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1456 #endif |
| 1649 | 1457 ngx_resolver_an_t *an; |
| 1458 ngx_resolver_ctx_t *ctx, *next; | |
| 1459 ngx_resolver_node_t *rn; | |
| 1460 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1461 if (ngx_resolver_copy(r, &name, buf, |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1462 buf + sizeof(ngx_resolver_hdr_t), buf + last) |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1463 != NGX_OK) |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1464 { |
| 1649 | 1465 return; |
| 1466 } | |
| 1467 | |
| 1468 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver qs:%V", &name); | |
| 1469 | |
| 1470 hash = ngx_crc32_short(name.data, name.len); | |
| 1471 | |
| 1472 /* lock name mutex */ | |
| 1473 | |
| 1474 rn = ngx_resolver_lookup_name(r, &name, hash); | |
| 1475 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1476 if (rn == NULL) { |
| 1649 | 1477 ngx_log_error(r->log_level, r->log, 0, |
| 1478 "unexpected response for %V", &name); | |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1479 ngx_resolver_free(r, name.data); |
| 1649 | 1480 goto failed; |
| 1481 } | |
| 1482 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1483 switch (qtype) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1484 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1485 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1486 case NGX_RESOLVE_AAAA: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1487 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1488 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
|
1489 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
|
1490 "unexpected response for %V", &name); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1491 ngx_resolver_free(r, name.data); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1492 goto failed; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1493 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1494 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1495 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
|
1496 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1497 break; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1498 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1499 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1500 default: /* NGX_RESOLVE_A */ |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1501 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1502 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
|
1503 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
|
1504 "unexpected response for %V", &name); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1505 ngx_resolver_free(r, name.data); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1506 goto failed; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1507 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1508 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1509 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
|
1510 } |
| 1649 | 1511 |
| 1512 if (ident != qident) { | |
| 1513 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
|
1514 "wrong ident %ui response for %V, expect %ui", |
| 1649 | 1515 ident, &name, qident); |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1516 ngx_resolver_free(r, name.data); |
| 1649 | 1517 goto failed; |
| 1518 } | |
| 1519 | |
| 3139 | 1520 ngx_resolver_free(r, name.data); |
| 1521 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1522 if (code == 0 && rn->code) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1523 code = rn->code; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1524 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1525 |
|
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
1526 if (code == 0 && nan == 0) { |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1527 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1528 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1529 switch (qtype) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1530 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1531 case NGX_RESOLVE_AAAA: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1532 |
|
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1533 rn->naddrs6 = 0; |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1534 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1535 if (rn->naddrs == (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1536 goto next; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1537 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1538 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1539 if (rn->naddrs) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1540 goto export; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1541 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1542 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1543 break; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1544 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1545 default: /* NGX_RESOLVE_A */ |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1546 |
|
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1547 rn->naddrs = 0; |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1548 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1549 if (rn->naddrs6 == (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1550 goto next; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1551 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1552 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1553 if (rn->naddrs6) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1554 goto export; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1555 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1556 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1557 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1558 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1559 code = NGX_RESOLVE_NXDOMAIN; |
|
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
1560 } |
|
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
1561 |
| 1649 | 1562 if (code) { |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1563 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1564 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1565 switch (qtype) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1566 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1567 case NGX_RESOLVE_AAAA: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1568 |
|
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1569 rn->naddrs6 = 0; |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1570 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1571 if (rn->naddrs == (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1572 rn->code = (u_char) code; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1573 goto next; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1574 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1575 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1576 break; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1577 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1578 default: /* NGX_RESOLVE_A */ |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1579 |
|
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1580 rn->naddrs = 0; |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1581 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1582 if (rn->naddrs6 == (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1583 rn->code = (u_char) code; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1584 goto next; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1585 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1586 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1587 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1588 |
| 1649 | 1589 next = rn->waiting; |
| 1590 rn->waiting = NULL; | |
| 1591 | |
| 1592 ngx_queue_remove(&rn->queue); | |
| 1593 | |
| 1594 ngx_rbtree_delete(&r->name_rbtree, &rn->node); | |
| 1595 | |
| 1596 /* unlock name mutex */ | |
| 1597 | |
| 1598 while (next) { | |
|
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
1599 ctx = next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
1600 ctx->state = code; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
1601 next = ctx->next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
1602 |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
1603 ctx->handler(ctx); |
| 1649 | 1604 } |
| 1605 | |
|
5920
7420068c4d4b
Resolver: fixed use-after-free memory access.
Ruslan Ermilov <ru@nginx.com>
parents:
5820
diff
changeset
|
1606 ngx_resolver_free_node(r, rn); |
|
7420068c4d4b
Resolver: fixed use-after-free memory access.
Ruslan Ermilov <ru@nginx.com>
parents:
5820
diff
changeset
|
1607 |
| 1649 | 1608 return; |
| 1609 } | |
| 1610 | |
| 1611 i = ans; | |
| 1612 naddrs = 0; | |
| 1613 cname = NULL; | |
| 1614 | |
| 1615 for (a = 0; a < nan; a++) { | |
| 1616 | |
| 1617 start = i; | |
| 1618 | |
| 1619 while (i < last) { | |
| 1620 | |
| 1621 if (buf[i] & 0xc0) { | |
| 1622 i += 2; | |
| 1623 goto found; | |
| 1624 } | |
| 1625 | |
| 1626 if (buf[i] == 0) { | |
| 1627 i++; | |
| 1628 goto test_length; | |
| 1629 } | |
| 1630 | |
| 1631 i += 1 + buf[i]; | |
| 1632 } | |
| 1633 | |
| 1634 goto short_response; | |
| 1635 | |
| 1636 test_length: | |
| 1637 | |
| 1638 if (i - start < 2) { | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1639 err = "invalid name in DNS response"; |
| 1649 | 1640 goto invalid; |
| 1641 } | |
| 1642 | |
| 1643 found: | |
| 1644 | |
| 1645 if (i + sizeof(ngx_resolver_an_t) >= last) { | |
| 1646 goto short_response; | |
| 1647 } | |
| 1648 | |
| 1649 an = (ngx_resolver_an_t *) &buf[i]; | |
| 1650 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1651 type = (an->type_hi << 8) + an->type_lo; |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1652 class = (an->class_hi << 8) + an->class_lo; |
| 1649 | 1653 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
|
1654 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
|
1655 + (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
|
1656 |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1657 if (class != 1) { |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1658 ngx_log_error(r->log_level, r->log, 0, |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1659 "unexpected RR class %ui", class); |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1660 goto failed; |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1661 } |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1662 |
|
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
1663 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
|
1664 ttl = 0; |
|
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
1665 } |
| 1649 | 1666 |
|
5485
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
1667 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
|
1668 |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1669 i += sizeof(ngx_resolver_an_t); |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1670 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1671 switch (type) { |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1672 |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1673 case NGX_RESOLVE_A: |
| 1649 | 1674 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1675 if (qtype != NGX_RESOLVE_A) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1676 err = "unexpected A record in DNS response"; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1677 goto invalid; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1678 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1679 |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1680 if (len != 4) { |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1681 err = "invalid A record in DNS response"; |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1682 goto invalid; |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1683 } |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1684 |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1685 if (i + 4 > last) { |
| 1649 | 1686 goto short_response; |
| 1687 } | |
| 1688 | |
| 1689 naddrs++; | |
| 1690 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1691 break; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1692 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1693 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1694 case NGX_RESOLVE_AAAA: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1695 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1696 if (qtype != NGX_RESOLVE_AAAA) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1697 err = "unexpected AAAA record in DNS response"; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1698 goto invalid; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1699 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1700 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1701 if (len != 16) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1702 err = "invalid AAAA record in DNS response"; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1703 goto invalid; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1704 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1705 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1706 if (i + 16 > last) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1707 goto short_response; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1708 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1709 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1710 naddrs++; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1711 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1712 break; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1713 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1714 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1715 case NGX_RESOLVE_CNAME: |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1716 |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1717 cname = &buf[i]; |
| 1965 | 1718 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1719 break; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1720 |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1721 case NGX_RESOLVE_DNAME: |
|
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 break; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1724 |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1725 default: |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1726 |
| 1966 | 1727 ngx_log_error(r->log_level, r->log, 0, |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1728 "unexpected RR type %ui", type); |
| 1649 | 1729 } |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1730 |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1731 i += len; |
| 1649 | 1732 } |
| 1733 | |
|
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
1734 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
|
1735 "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
|
1736 naddrs, cname, rn->ttl); |
| 1649 | 1737 |
| 1738 if (naddrs) { | |
| 1739 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1740 switch (qtype) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1741 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1742 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1743 case NGX_RESOLVE_AAAA: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1744 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1745 if (naddrs == 1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1746 addr6 = &rn->u6.addr6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1747 rn->naddrs6 = 1; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1748 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1749 } else { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1750 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
|
1751 if (addr6 == NULL) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1752 goto failed; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1753 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1754 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1755 rn->u6.addrs6 = addr6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1756 rn->naddrs6 = (u_short) naddrs; |
| 1649 | 1757 } |
| 1758 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1759 #if (NGX_SUPPRESS_WARN) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1760 addr = NULL; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1761 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1762 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1763 break; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1764 #endif |
|
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 default: /* NGX_RESOLVE_A */ |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1767 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1768 if (naddrs == 1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1769 addr = &rn->u.addr; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1770 rn->naddrs = 1; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1771 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1772 } else { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1773 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
|
1774 if (addr == NULL) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1775 goto failed; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1776 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1777 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1778 rn->u.addrs = addr; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1779 rn->naddrs = (u_short) naddrs; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1780 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1781 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1782 #if (NGX_HAVE_INET6 && NGX_SUPPRESS_WARN) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1783 addr6 = NULL; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1784 #endif |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1785 } |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1786 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1787 n = 0; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1788 i = ans; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1789 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1790 for (a = 0; a < nan; a++) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1791 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1792 for ( ;; ) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1793 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1794 if (buf[i] & 0xc0) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1795 i += 2; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1796 break; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1797 } |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1798 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1799 if (buf[i] == 0) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1800 i++; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1801 break; |
| 1649 | 1802 } |
| 1803 | |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1804 i += 1 + buf[i]; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1805 } |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1806 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1807 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
|
1808 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1809 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
|
1810 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
|
1811 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1812 i += sizeof(ngx_resolver_an_t); |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1813 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1814 if (type == NGX_RESOLVE_A) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1815 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1816 addr[n] = htonl((buf[i] << 24) + (buf[i + 1] << 16) |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1817 + (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
|
1818 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1819 if (++n == naddrs) { |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1820 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1821 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1822 if (rn->naddrs6 == (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1823 goto next; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1824 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1825 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1826 |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1827 break; |
| 1649 | 1828 } |
| 1829 } | |
| 1830 | |
|
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 else if (type == NGX_RESOLVE_AAAA) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1833 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1834 ngx_memcpy(addr6[n].s6_addr, &buf[i], 16); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1835 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1836 if (++n == naddrs) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1837 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1838 if (rn->naddrs == (u_short) -1) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1839 goto next; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1840 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1841 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1842 break; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1843 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1844 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1845 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1846 |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1847 i += len; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1848 } |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1849 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1850 |
|
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1851 switch (qtype) { |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1852 |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1853 #if (NGX_HAVE_INET6) |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1854 case NGX_RESOLVE_AAAA: |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1855 |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1856 if (rn->naddrs6 == (u_short) -1) { |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1857 rn->naddrs6 = 0; |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1858 } |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1859 |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1860 break; |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1861 #endif |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1862 |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1863 default: /* NGX_RESOLVE_A */ |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1864 |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1865 if (rn->naddrs == (u_short) -1) { |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1866 rn->naddrs = 0; |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1867 } |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1868 } |
|
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1869 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1870 if (rn->naddrs != (u_short) -1 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1871 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1872 && rn->naddrs6 != (u_short) -1 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1873 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1874 && rn->naddrs |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1875 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1876 + rn->naddrs6 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1877 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1878 > 0) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1879 { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1880 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1881 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1882 export: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1883 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1884 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1885 naddrs = rn->naddrs; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1886 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1887 naddrs += rn->naddrs6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1888 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1889 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1890 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
|
1891 addrs = NULL; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1892 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1893 } else { |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1894 addrs = ngx_resolver_export(r, rn, 0); |
| 1649 | 1895 if (addrs == NULL) { |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1896 goto failed; |
| 1649 | 1897 } |
| 1898 } | |
| 1899 | |
| 1900 ngx_queue_remove(&rn->queue); | |
| 1901 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1902 rn->valid = ngx_time() + (r->valid ? r->valid : (time_t) rn->ttl); |
| 1649 | 1903 rn->expire = ngx_time() + r->expire; |
| 1904 | |
| 1905 ngx_queue_insert_head(&r->name_expire_queue, &rn->queue); | |
| 1906 | |
| 1907 next = rn->waiting; | |
| 1908 rn->waiting = NULL; | |
| 1909 | |
| 1910 /* unlock name mutex */ | |
| 1911 | |
| 1912 while (next) { | |
|
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
1913 ctx = next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
1914 ctx->state = NGX_OK; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
1915 ctx->naddrs = naddrs; |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1916 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1917 if (addrs == NULL) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1918 ctx->addrs = &ctx->addr; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1919 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
|
1920 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
|
1921 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
|
1922 ctx->sin.sin_family = AF_INET; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1923 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
|
1924 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1925 } else { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1926 ctx->addrs = addrs; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1927 } |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1928 |
|
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
1929 next = ctx->next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
1930 |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
1931 ctx->handler(ctx); |
| 1649 | 1932 } |
| 1933 | |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1934 if (addrs != NULL) { |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1935 ngx_resolver_free(r, addrs->sockaddr); |
| 1649 | 1936 ngx_resolver_free(r, addrs); |
| 1937 } | |
| 1938 | |
|
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
1939 ngx_resolver_free(r, rn->query); |
|
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
1940 rn->query = NULL; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1941 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1942 rn->query6 = NULL; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1943 #endif |
|
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
1944 |
| 1649 | 1945 return; |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1946 } |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1947 |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1948 if (cname) { |
| 1649 | 1949 |
| 1950 /* CNAME only */ | |
| 1951 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1952 if (rn->naddrs == (u_short) -1 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1953 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1954 || rn->naddrs6 == (u_short) -1 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1955 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1956 ) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1957 { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1958 goto next; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1959 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1960 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1961 if (ngx_resolver_copy(r, &name, buf, cname, buf + last) != NGX_OK) { |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1962 goto failed; |
| 1649 | 1963 } |
| 1964 | |
| 1965 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, | |
| 1966 "resolver cname:\"%V\"", &name); | |
| 1967 | |
|
1741
0829024c924d
fix segfault if response will have CNAME only
Igor Sysoev <igor@sysoev.ru>
parents:
1689
diff
changeset
|
1968 ngx_queue_remove(&rn->queue); |
|
0829024c924d
fix segfault if response will have CNAME only
Igor Sysoev <igor@sysoev.ru>
parents:
1689
diff
changeset
|
1969 |
| 1649 | 1970 rn->cnlen = (u_short) name.len; |
| 1971 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
|
1972 |
|
5485
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
1973 rn->valid = ngx_time() + (r->valid ? r->valid : (time_t) rn->ttl); |
| 1649 | 1974 rn->expire = ngx_time() + r->expire; |
| 1975 | |
| 1976 ngx_queue_insert_head(&r->name_expire_queue, &rn->queue); | |
| 1977 | |
| 1978 ctx = rn->waiting; | |
| 1979 rn->waiting = NULL; | |
| 1980 | |
| 1981 if (ctx) { | |
| 1982 ctx->name = name; | |
| 1983 | |
| 1984 (void) ngx_resolve_name_locked(r, ctx); | |
| 1985 } | |
| 1986 | |
|
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
1987 ngx_resolver_free(r, rn->query); |
|
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
1988 rn->query = NULL; |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1989 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1990 rn->query6 = NULL; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1991 #endif |
|
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
1992 |
|
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1993 /* unlock name mutex */ |
|
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1994 |
| 1649 | 1995 return; |
| 1996 } | |
| 1997 | |
| 1998 ngx_log_error(r->log_level, r->log, 0, | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1999 "no A or CNAME types in DNS response"); |
| 1649 | 2000 return; |
| 2001 | |
| 2002 short_response: | |
| 2003 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2004 err = "short DNS response"; |
| 1649 | 2005 |
| 2006 invalid: | |
| 2007 | |
| 2008 /* unlock name mutex */ | |
| 2009 | |
| 2010 ngx_log_error(r->log_level, r->log, 0, err); | |
| 2011 | |
| 2012 return; | |
| 2013 | |
| 2014 failed: | |
| 2015 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2016 next: |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2017 |
| 1649 | 2018 /* unlock name mutex */ |
| 2019 | |
| 2020 return; | |
| 2021 } | |
| 2022 | |
| 2023 | |
| 2024 static void | |
| 2025 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
|
2026 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan) |
| 1649 | 2027 { |
| 2028 char *err; | |
| 2029 size_t len; | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2030 u_char text[NGX_SOCKADDR_STRLEN]; |
| 1649 | 2031 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
|
2032 int32_t ttl; |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2033 ngx_int_t octet; |
| 1649 | 2034 ngx_str_t name; |
|
5472
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
2035 ngx_uint_t i, mask, qident, class; |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2036 ngx_queue_t *expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2037 ngx_rbtree_t *tree; |
| 1649 | 2038 ngx_resolver_an_t *an; |
| 2039 ngx_resolver_ctx_t *ctx, *next; | |
| 2040 ngx_resolver_node_t *rn; | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2041 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2042 uint32_t hash; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2043 ngx_int_t digit; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2044 struct in6_addr addr6; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2045 #endif |
| 1649 | 2046 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2047 if (ngx_resolver_copy(r, NULL, buf, |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2048 buf + sizeof(ngx_resolver_hdr_t), buf + n) |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2049 != NGX_OK) |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2050 { |
|
5472
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
2051 return; |
| 1649 | 2052 } |
| 2053 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2054 /* AF_INET */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2055 |
| 1649 | 2056 addr = 0; |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2057 i = sizeof(ngx_resolver_hdr_t); |
| 1649 | 2058 |
| 2059 for (mask = 0; mask < 32; mask += 8) { | |
| 2060 len = buf[i++]; | |
| 2061 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2062 octet = ngx_atoi(&buf[i], len); |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2063 if (octet == NGX_ERROR || octet > 255) { |
| 1649 | 2064 goto invalid_in_addr_arpa; |
| 2065 } | |
| 2066 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2067 addr += octet << mask; |
| 1649 | 2068 i += len; |
| 2069 } | |
| 2070 | |
|
5479
c0d6eae5a1c5
Resolver: lookups are case-insensitive.
Ruslan Ermilov <ru@nginx.com>
parents:
5478
diff
changeset
|
2071 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
|
2072 i += sizeof("\7in-addr\4arpa"); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2073 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2074 /* lock addr mutex */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2075 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2076 rn = ngx_resolver_lookup_addr(r, addr); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2077 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2078 tree = &r->addr_rbtree; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2079 expire_queue = &r->addr_expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2080 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2081 addr = htonl(addr); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2082 name.len = ngx_inet_ntop(AF_INET, &addr, text, NGX_SOCKADDR_STRLEN); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2083 name.data = text; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2084 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2085 goto valid; |
| 1649 | 2086 } |
| 2087 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2088 invalid_in_addr_arpa: |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2089 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2090 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2091 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2092 i = sizeof(ngx_resolver_hdr_t); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2093 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2094 for (octet = 15; octet >= 0; octet--) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2095 if (buf[i++] != '\1') { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2096 goto invalid_ip6_arpa; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2097 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2098 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2099 digit = ngx_hextoi(&buf[i++], 1); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2100 if (digit == NGX_ERROR) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2101 goto invalid_ip6_arpa; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2102 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2103 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2104 addr6.s6_addr[octet] = (u_char) digit; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2105 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2106 if (buf[i++] != '\1') { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2107 goto invalid_ip6_arpa; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2108 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2109 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2110 digit = ngx_hextoi(&buf[i++], 1); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2111 if (digit == NGX_ERROR) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2112 goto invalid_ip6_arpa; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2113 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2114 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2115 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
|
2116 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2117 |
|
5479
c0d6eae5a1c5
Resolver: lookups are case-insensitive.
Ruslan Ermilov <ru@nginx.com>
parents:
5478
diff
changeset
|
2118 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
|
2119 i += sizeof("\3ip6\4arpa"); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2120 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2121 /* lock addr mutex */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2122 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2123 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
|
2124 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
|
2125 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2126 tree = &r->addr6_rbtree; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2127 expire_queue = &r->addr6_expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2128 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2129 name.len = ngx_inet6_ntop(addr6.s6_addr, text, NGX_SOCKADDR_STRLEN); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2130 name.data = text; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2131 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2132 goto valid; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2133 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2134 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2135 invalid_ip6_arpa: |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2136 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2137 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2138 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
|
2139 "invalid in-addr.arpa or ip6.arpa name in DNS response"); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2140 return; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2141 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2142 valid: |
| 1649 | 2143 |
| 2144 if (rn == NULL || rn->query == NULL) { | |
| 2145 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
|
2146 "unexpected response for %V", &name); |
| 1649 | 2147 goto failed; |
| 2148 } | |
| 2149 | |
| 2150 qident = (rn->query[0] << 8) + rn->query[1]; | |
| 2151 | |
| 2152 if (ident != qident) { | |
| 2153 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
|
2154 "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
|
2155 ident, &name, qident); |
| 1649 | 2156 goto failed; |
| 2157 } | |
| 2158 | |
|
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
2159 if (code == 0 && nan == 0) { |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2160 code = NGX_RESOLVE_NXDOMAIN; |
|
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
2161 } |
|
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
2162 |
| 1649 | 2163 if (code) { |
| 2164 next = rn->waiting; | |
| 2165 rn->waiting = NULL; | |
| 2166 | |
| 2167 ngx_queue_remove(&rn->queue); | |
| 2168 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2169 ngx_rbtree_delete(tree, &rn->node); |
| 1649 | 2170 |
| 2171 /* unlock addr mutex */ | |
| 2172 | |
| 2173 while (next) { | |
|
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2174 ctx = next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2175 ctx->state = code; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2176 next = ctx->next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2177 |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2178 ctx->handler(ctx); |
| 1649 | 2179 } |
| 2180 | |
|
5920
7420068c4d4b
Resolver: fixed use-after-free memory access.
Ruslan Ermilov <ru@nginx.com>
parents:
5820
diff
changeset
|
2181 ngx_resolver_free_node(r, rn); |
|
7420068c4d4b
Resolver: fixed use-after-free memory access.
Ruslan Ermilov <ru@nginx.com>
parents:
5820
diff
changeset
|
2182 |
| 1649 | 2183 return; |
| 2184 } | |
| 2185 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2186 i += sizeof(ngx_resolver_qs_t); |
| 1649 | 2187 |
|
5472
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
2188 if (i + 2 + sizeof(ngx_resolver_an_t) >= n) { |
| 1649 | 2189 goto short_response; |
| 2190 } | |
| 2191 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2192 /* compression pointer to *.arpa */ |
| 1649 | 2193 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2194 if (buf[i] != 0xc0 || buf[i + 1] != sizeof(ngx_resolver_hdr_t)) { |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2195 err = "invalid in-addr.arpa or ip6.arpa name in DNS response"; |
| 1649 | 2196 goto invalid; |
| 2197 } | |
| 2198 | |
| 2199 an = (ngx_resolver_an_t *) &buf[i + 2]; | |
| 2200 | |
|
5472
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
2201 class = (an->class_hi << 8) + an->class_lo; |
| 1649 | 2202 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
|
2203 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
|
2204 + (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
|
2205 |
|
5472
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
2206 if (class != 1) { |
|
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
2207 ngx_log_error(r->log_level, r->log, 0, |
|
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
2208 "unexpected RR class %ui", class); |
|
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
2209 goto failed; |
|
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
2210 } |
|
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
2211 |
|
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2212 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
|
2213 ttl = 0; |
|
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2214 } |
| 1649 | 2215 |
| 2216 ngx_log_debug3(NGX_LOG_DEBUG_CORE, r->log, 0, | |
|
3902
159b58f9c0bd
fix building by gcc 4.6 without --with-debug
Igor Sysoev <igor@sysoev.ru>
parents:
3763
diff
changeset
|
2217 "resolver qt:%ui cl:%ui len:%uz", |
|
159b58f9c0bd
fix building by gcc 4.6 without --with-debug
Igor Sysoev <igor@sysoev.ru>
parents:
3763
diff
changeset
|
2218 (an->type_hi << 8) + an->type_lo, |
|
5472
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
2219 class, len); |
| 1649 | 2220 |
| 2221 i += 2 + sizeof(ngx_resolver_an_t); | |
| 2222 | |
|
5469
b2fc466a11a7
Resolver: removed unnecessary casts.
Ruslan Ermilov <ru@nginx.com>
parents:
5468
diff
changeset
|
2223 if (i + len > n) { |
| 1649 | 2224 goto short_response; |
| 2225 } | |
| 2226 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2227 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
|
2228 goto failed; |
| 1649 | 2229 } |
| 2230 | |
| 2231 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver an:%V", &name); | |
| 2232 | |
|
2486
8de5dc3e7001
use length of uncompressed name
Igor Sysoev <igor@sysoev.ru>
parents:
2484
diff
changeset
|
2233 if (name.len != (size_t) rn->nlen |
|
8de5dc3e7001
use length of uncompressed name
Igor Sysoev <igor@sysoev.ru>
parents:
2484
diff
changeset
|
2234 || ngx_strncmp(name.data, rn->name, name.len) != 0) |
| 1649 | 2235 { |
|
2482
30ec8c5ac75b
fix reverse resolving cache: it stored zero length names
Igor Sysoev <igor@sysoev.ru>
parents:
2314
diff
changeset
|
2236 if (rn->nlen) { |
|
30ec8c5ac75b
fix reverse resolving cache: it stored zero length names
Igor Sysoev <igor@sysoev.ru>
parents:
2314
diff
changeset
|
2237 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
|
2238 } |
|
30ec8c5ac75b
fix reverse resolving cache: it stored zero length names
Igor Sysoev <igor@sysoev.ru>
parents:
2314
diff
changeset
|
2239 |
|
2490
1c87647b7ca5
fix building by msvc, introduced in r2487
Igor Sysoev <igor@sysoev.ru>
parents:
2487
diff
changeset
|
2240 rn->nlen = (u_short) name.len; |
| 1649 | 2241 rn->name = name.data; |
| 2242 | |
|
2486
8de5dc3e7001
use length of uncompressed name
Igor Sysoev <igor@sysoev.ru>
parents:
2484
diff
changeset
|
2243 name.data = ngx_resolver_dup(r, rn->name, name.len); |
| 1649 | 2244 if (name.data == NULL) { |
| 2245 goto failed; | |
| 2246 } | |
| 2247 } | |
| 2248 | |
| 2249 ngx_queue_remove(&rn->queue); | |
| 2250 | |
|
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2251 rn->valid = ngx_time() + (r->valid ? r->valid : ttl); |
| 1649 | 2252 rn->expire = ngx_time() + r->expire; |
| 2253 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2254 ngx_queue_insert_head(expire_queue, &rn->queue); |
| 1649 | 2255 |
| 2256 next = rn->waiting; | |
| 2257 rn->waiting = NULL; | |
| 2258 | |
| 2259 /* unlock addr mutex */ | |
| 2260 | |
| 2261 while (next) { | |
|
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2262 ctx = next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2263 ctx->state = NGX_OK; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2264 ctx->name = name; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2265 next = ctx->next; |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2266 |
|
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2267 ctx->handler(ctx); |
| 1649 | 2268 } |
| 2269 | |
| 2270 ngx_resolver_free(r, name.data); | |
| 2271 | |
| 2272 return; | |
| 2273 | |
| 2274 short_response: | |
| 2275 | |
| 2276 err = "short DNS response"; | |
| 2277 | |
| 2278 invalid: | |
| 2279 | |
| 2280 /* unlock addr mutex */ | |
| 2281 | |
| 2282 ngx_log_error(r->log_level, r->log, 0, err); | |
| 2283 | |
| 2284 return; | |
| 2285 | |
| 2286 failed: | |
| 2287 | |
| 2288 /* unlock addr mutex */ | |
| 2289 | |
| 2290 return; | |
| 2291 } | |
| 2292 | |
| 2293 | |
| 2294 static ngx_resolver_node_t * | |
| 2295 ngx_resolver_lookup_name(ngx_resolver_t *r, ngx_str_t *name, uint32_t hash) | |
| 2296 { | |
| 2297 ngx_int_t rc; | |
| 2298 ngx_rbtree_node_t *node, *sentinel; | |
| 2299 ngx_resolver_node_t *rn; | |
| 2300 | |
| 2301 node = r->name_rbtree.root; | |
| 2302 sentinel = r->name_rbtree.sentinel; | |
| 2303 | |
| 2304 while (node != sentinel) { | |
| 2305 | |
| 2306 if (hash < node->key) { | |
| 2307 node = node->left; | |
| 2308 continue; | |
| 2309 } | |
| 2310 | |
| 2311 if (hash > node->key) { | |
| 2312 node = node->right; | |
| 2313 continue; | |
| 2314 } | |
| 2315 | |
| 2316 /* hash == node->key */ | |
| 2317 | |
|
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
2318 rn = ngx_resolver_node(node); |
|
4497
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
2319 |
|
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
2320 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
|
2321 |
|
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
2322 if (rc == 0) { |
|
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
2323 return rn; |
|
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
2324 } |
|
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
2325 |
|
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
2326 node = (rc < 0) ? node->left : node->right; |
| 1649 | 2327 } |
| 2328 | |
| 2329 /* not found */ | |
| 2330 | |
| 2331 return NULL; | |
| 2332 } | |
| 2333 | |
| 2334 | |
| 2335 static ngx_resolver_node_t * | |
| 2336 ngx_resolver_lookup_addr(ngx_resolver_t *r, in_addr_t addr) | |
| 2337 { | |
| 2338 ngx_rbtree_node_t *node, *sentinel; | |
| 2339 | |
| 2340 node = r->addr_rbtree.root; | |
| 2341 sentinel = r->addr_rbtree.sentinel; | |
| 2342 | |
| 2343 while (node != sentinel) { | |
| 2344 | |
| 2345 if (addr < node->key) { | |
| 2346 node = node->left; | |
| 2347 continue; | |
| 2348 } | |
| 2349 | |
| 2350 if (addr > node->key) { | |
| 2351 node = node->right; | |
| 2352 continue; | |
| 2353 } | |
| 2354 | |
| 2355 /* addr == node->key */ | |
| 2356 | |
|
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
2357 return ngx_resolver_node(node); |
| 1649 | 2358 } |
| 2359 | |
| 2360 /* not found */ | |
| 2361 | |
| 2362 return NULL; | |
| 2363 } | |
| 2364 | |
| 2365 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2366 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2367 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2368 static ngx_resolver_node_t * |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2369 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
|
2370 uint32_t hash) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2371 { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2372 ngx_int_t rc; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2373 ngx_rbtree_node_t *node, *sentinel; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2374 ngx_resolver_node_t *rn; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2375 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2376 node = r->addr6_rbtree.root; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2377 sentinel = r->addr6_rbtree.sentinel; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2378 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2379 while (node != sentinel) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2380 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2381 if (hash < node->key) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2382 node = node->left; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2383 continue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2384 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2385 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2386 if (hash > node->key) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2387 node = node->right; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2388 continue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2389 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2390 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2391 /* hash == node->key */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2392 |
|
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
2393 rn = ngx_resolver_node(node); |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2394 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2395 rc = ngx_memcmp(addr, &rn->addr6, 16); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2396 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2397 if (rc == 0) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2398 return rn; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2399 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2400 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2401 node = (rc < 0) ? node->left : node->right; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2402 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2403 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2404 /* not found */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2405 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2406 return NULL; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2407 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2408 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2409 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2410 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2411 |
| 1649 | 2412 static void |
| 2413 ngx_resolver_rbtree_insert_value(ngx_rbtree_node_t *temp, | |
| 2414 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel) | |
| 2415 { | |
| 2416 ngx_rbtree_node_t **p; | |
| 2417 ngx_resolver_node_t *rn, *rn_temp; | |
| 2418 | |
| 2419 for ( ;; ) { | |
| 2420 | |
| 2421 if (node->key < temp->key) { | |
| 2422 | |
| 2423 p = &temp->left; | |
| 2424 | |
| 2425 } else if (node->key > temp->key) { | |
| 2426 | |
| 2427 p = &temp->right; | |
| 2428 | |
| 2429 } else { /* node->key == temp->key */ | |
| 2430 | |
|
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
2431 rn = ngx_resolver_node(node); |
|
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
2432 rn_temp = ngx_resolver_node(temp); |
| 1649 | 2433 |
|
3143
ab6258e18099
fix resolver cache rbtree comparison
Igor Sysoev <igor@sysoev.ru>
parents:
3139
diff
changeset
|
2434 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
|
2435 < 0) ? &temp->left : &temp->right; |
| 1649 | 2436 } |
| 2437 | |
| 2438 if (*p == sentinel) { | |
| 2439 break; | |
| 2440 } | |
| 2441 | |
| 2442 temp = *p; | |
| 2443 } | |
| 2444 | |
| 2445 *p = node; | |
| 2446 node->parent = temp; | |
| 2447 node->left = sentinel; | |
| 2448 node->right = sentinel; | |
| 2449 ngx_rbt_red(node); | |
| 2450 } | |
| 2451 | |
| 2452 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2453 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2454 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2455 static void |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2456 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
|
2457 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
|
2458 { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2459 ngx_rbtree_node_t **p; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2460 ngx_resolver_node_t *rn, *rn_temp; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2461 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2462 for ( ;; ) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2463 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2464 if (node->key < temp->key) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2465 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2466 p = &temp->left; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2467 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2468 } else if (node->key > temp->key) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2469 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2470 p = &temp->right; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2471 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2472 } else { /* node->key == temp->key */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2473 |
|
5921
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
2474 rn = ngx_resolver_node(node); |
|
5004210e8c78
Resolver: fixed debug event logging.
Ruslan Ermilov <ru@nginx.com>
parents:
5920
diff
changeset
|
2475 rn_temp = ngx_resolver_node(temp); |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2476 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2477 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
|
2478 < 0) ? &temp->left : &temp->right; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2479 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2480 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2481 if (*p == sentinel) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2482 break; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2483 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2484 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2485 temp = *p; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2486 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2487 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2488 *p = node; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2489 node->parent = temp; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2490 node->left = sentinel; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2491 node->right = sentinel; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2492 ngx_rbt_red(node); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2493 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2494 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2495 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2496 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2497 |
| 1649 | 2498 static ngx_int_t |
| 2499 ngx_resolver_create_name_query(ngx_resolver_node_t *rn, ngx_resolver_ctx_t *ctx) | |
| 2500 { | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2501 u_char *p, *s; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2502 size_t len, nlen; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2503 ngx_uint_t ident; |
|
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2504 #if (NGX_HAVE_INET6) |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2505 ngx_resolver_t *r; |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2506 #endif |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2507 ngx_resolver_qs_t *qs; |
|
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2508 ngx_resolver_hdr_t *query; |
| 1649 | 2509 |
|
3306
61bdaac6c668
fix resolving an empty name (".")
Igor Sysoev <igor@sysoev.ru>
parents:
3299
diff
changeset
|
2510 nlen = ctx->name.len ? (1 + ctx->name.len + 1) : 1; |
|
61bdaac6c668
fix resolving an empty name (".")
Igor Sysoev <igor@sysoev.ru>
parents:
3299
diff
changeset
|
2511 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2512 len = sizeof(ngx_resolver_hdr_t) + nlen + sizeof(ngx_resolver_qs_t); |
| 1649 | 2513 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2514 #if (NGX_HAVE_INET6) |
|
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2515 r = ctx->resolver; |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2516 |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2517 p = ngx_resolver_alloc(ctx->resolver, r->ipv6 ? len * 2 : len); |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2518 #else |
|
3307
34e99a97fbd6
use ngx_resolver_alloc() instead of ngx_resolver_calloc()
Igor Sysoev <igor@sysoev.ru>
parents:
3306
diff
changeset
|
2519 p = ngx_resolver_alloc(ctx->resolver, len); |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2520 #endif |
| 1649 | 2521 if (p == NULL) { |
| 2522 return NGX_ERROR; | |
| 2523 } | |
| 2524 | |
| 2525 rn->qlen = (u_short) len; | |
| 2526 rn->query = p; | |
| 2527 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2528 #if (NGX_HAVE_INET6) |
|
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2529 if (r->ipv6) { |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2530 rn->query6 = p + len; |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2531 } |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2532 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2533 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2534 query = (ngx_resolver_hdr_t *) p; |
| 1649 | 2535 |
| 2536 ident = ngx_random(); | |
| 2537 | |
| 2538 ngx_log_debug2(NGX_LOG_DEBUG_CORE, ctx->resolver->log, 0, | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2539 "resolve: \"%V\" A %i", &ctx->name, ident & 0xffff); |
| 1649 | 2540 |
| 2541 query->ident_hi = (u_char) ((ident >> 8) & 0xff); | |
| 2542 query->ident_lo = (u_char) (ident & 0xff); | |
| 2543 | |
| 2544 /* recursion query */ | |
| 2545 query->flags_hi = 1; query->flags_lo = 0; | |
| 2546 | |
| 2547 /* one question */ | |
| 2548 query->nqs_hi = 0; query->nqs_lo = 1; | |
| 2549 query->nan_hi = 0; query->nan_lo = 0; | |
| 2550 query->nns_hi = 0; query->nns_lo = 0; | |
| 2551 query->nar_hi = 0; query->nar_lo = 0; | |
| 2552 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2553 p += sizeof(ngx_resolver_hdr_t) + nlen; |
| 1649 | 2554 |
| 2555 qs = (ngx_resolver_qs_t *) p; | |
| 2556 | |
| 2557 /* query type */ | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2558 qs->type_hi = 0; qs->type_lo = NGX_RESOLVE_A; |
| 1649 | 2559 |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2560 /* IN query class */ |
| 1649 | 2561 qs->class_hi = 0; qs->class_lo = 1; |
| 2562 | |
| 2563 /* convert "www.example.com" to "\3www\7example\3com\0" */ | |
| 2564 | |
| 2565 len = 0; | |
| 2566 p--; | |
| 2567 *p-- = '\0'; | |
| 2568 | |
|
4610
778d2cc03e22
Fixed segmentation fault in ngx_resolver_create_name_query().
Ruslan Ermilov <ru@nginx.com>
parents:
4556
diff
changeset
|
2569 if (ctx->name.len == 0) { |
|
778d2cc03e22
Fixed segmentation fault in ngx_resolver_create_name_query().
Ruslan Ermilov <ru@nginx.com>
parents:
4556
diff
changeset
|
2570 return NGX_DECLINED; |
|
778d2cc03e22
Fixed segmentation fault in ngx_resolver_create_name_query().
Ruslan Ermilov <ru@nginx.com>
parents:
4556
diff
changeset
|
2571 } |
|
778d2cc03e22
Fixed segmentation fault in ngx_resolver_create_name_query().
Ruslan Ermilov <ru@nginx.com>
parents:
4556
diff
changeset
|
2572 |
| 1649 | 2573 for (s = ctx->name.data + ctx->name.len - 1; s >= ctx->name.data; s--) { |
| 2574 if (*s != '.') { | |
| 2575 *p = *s; | |
| 2576 len++; | |
| 2577 | |
| 2578 } else { | |
|
4556
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
2579 if (len == 0 || len > 255) { |
|
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
2580 return NGX_DECLINED; |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
2581 } |
|
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
2582 |
| 1649 | 2583 *p = (u_char) len; |
| 2584 len = 0; | |
| 2585 } | |
| 2586 | |
| 2587 p--; | |
| 2588 } | |
| 2589 | |
|
4556
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
2590 if (len == 0 || len > 255) { |
|
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
2591 return NGX_DECLINED; |
|
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
2592 } |
|
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
2593 |
| 1649 | 2594 *p = (u_char) len; |
| 2595 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2596 #if (NGX_HAVE_INET6) |
|
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2597 if (!r->ipv6) { |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2598 return NGX_OK; |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2599 } |
|
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2600 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2601 p = rn->query6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2602 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2603 ngx_memcpy(p, rn->query, rn->qlen); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2604 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2605 query = (ngx_resolver_hdr_t *) p; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2606 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2607 ident = ngx_random(); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2608 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2609 ngx_log_debug2(NGX_LOG_DEBUG_CORE, ctx->resolver->log, 0, |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2610 "resolve: \"%V\" AAAA %i", &ctx->name, ident & 0xffff); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2611 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2612 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
|
2613 query->ident_lo = (u_char) (ident & 0xff); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2614 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2615 p += sizeof(ngx_resolver_hdr_t) + nlen; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2616 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2617 qs = (ngx_resolver_qs_t *) p; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2618 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2619 qs->type_lo = NGX_RESOLVE_AAAA; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2620 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2621 |
| 1649 | 2622 return NGX_OK; |
| 2623 } | |
| 2624 | |
| 2625 | |
| 2626 static ngx_int_t | |
| 2627 ngx_resolver_create_addr_query(ngx_resolver_node_t *rn, ngx_resolver_ctx_t *ctx) | |
| 2628 { | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2629 u_char *p, *d; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2630 size_t len; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2631 in_addr_t addr; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2632 ngx_int_t n; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2633 ngx_uint_t ident; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2634 ngx_resolver_hdr_t *query; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2635 struct sockaddr_in *sin; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2636 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2637 struct sockaddr_in6 *sin6; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2638 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2639 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2640 switch (ctx->addr.sockaddr->sa_family) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2641 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2642 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2643 case AF_INET6: |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2644 len = sizeof(ngx_resolver_hdr_t) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2645 + 64 + sizeof(".ip6.arpa.") - 1 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2646 + sizeof(ngx_resolver_qs_t); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2647 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2648 break; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2649 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2650 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2651 default: /* AF_INET */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2652 len = sizeof(ngx_resolver_hdr_t) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2653 + 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
|
2654 + sizeof(ngx_resolver_qs_t); |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2655 } |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2656 |
|
3307
34e99a97fbd6
use ngx_resolver_alloc() instead of ngx_resolver_calloc()
Igor Sysoev <igor@sysoev.ru>
parents:
3306
diff
changeset
|
2657 p = ngx_resolver_alloc(ctx->resolver, len); |
| 1649 | 2658 if (p == NULL) { |
| 2659 return NGX_ERROR; | |
| 2660 } | |
| 2661 | |
| 2662 rn->query = p; | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2663 query = (ngx_resolver_hdr_t *) p; |
| 1649 | 2664 |
| 2665 ident = ngx_random(); | |
| 2666 | |
| 2667 query->ident_hi = (u_char) ((ident >> 8) & 0xff); | |
| 2668 query->ident_lo = (u_char) (ident & 0xff); | |
| 2669 | |
| 2670 /* recursion query */ | |
| 2671 query->flags_hi = 1; query->flags_lo = 0; | |
| 2672 | |
| 2673 /* one question */ | |
| 2674 query->nqs_hi = 0; query->nqs_lo = 1; | |
| 2675 query->nan_hi = 0; query->nan_lo = 0; | |
| 2676 query->nns_hi = 0; query->nns_lo = 0; | |
| 2677 query->nar_hi = 0; query->nar_lo = 0; | |
| 2678 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2679 p += sizeof(ngx_resolver_hdr_t); |
| 1649 | 2680 |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2681 switch (ctx->addr.sockaddr->sa_family) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2682 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2683 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2684 case AF_INET6: |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2685 sin6 = (struct sockaddr_in6 *) ctx->addr.sockaddr; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2686 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2687 for (n = 15; n >= 0; n--) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2688 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
|
2689 sin6->sin6_addr.s6_addr[n] & 0xf, |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2690 (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
|
2691 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2692 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2693 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
|
2694 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2695 break; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2696 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2697 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2698 default: /* AF_INET */ |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2699 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2700 sin = (struct sockaddr_in *) ctx->addr.sockaddr; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2701 addr = ntohl(sin->sin_addr.s_addr); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2702 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2703 for (n = 0; n < 32; n += 8) { |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2704 d = ngx_sprintf(&p[1], "%ud", (addr >> n) & 0xff); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2705 *p = (u_char) (d - &p[1]); |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2706 p = d; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2707 } |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2708 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2709 p = ngx_cpymem(p, "\7in-addr\4arpa\0", 14); |
| 1649 | 2710 } |
| 2711 | |
|
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2712 /* query type "PTR", IN query class */ |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2713 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
|
2714 |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2715 rn->qlen = (u_short) (p - rn->query); |
| 1649 | 2716 |
| 2717 return NGX_OK; | |
| 2718 } | |
| 2719 | |
| 2720 | |
| 2721 static ngx_int_t | |
| 2722 ngx_resolver_copy(ngx_resolver_t *r, ngx_str_t *name, u_char *buf, u_char *src, | |
| 2723 u_char *last) | |
| 2724 { | |
| 2725 char *err; | |
| 2726 u_char *p, *dst; | |
| 2727 ssize_t len; | |
| 2728 ngx_uint_t i, n; | |
| 2729 | |
| 2730 p = src; | |
| 2731 len = -1; | |
| 2732 | |
| 2733 /* | |
| 2734 * compression pointers allow to create endless loop, so we set limit; | |
| 2735 * 128 pointers should be enough to store 255-byte name | |
| 2736 */ | |
| 2737 | |
| 2738 for (i = 0; i < 128; i++) { | |
| 2739 n = *p++; | |
| 2740 | |
| 2741 if (n == 0) { | |
| 2742 goto done; | |
| 2743 } | |
| 2744 | |
| 2745 if (n & 0xc0) { | |
|
2314
52987a023486
fix compression pointer for big (>255) DNS responses
Igor Sysoev <igor@sysoev.ru>
parents:
2282
diff
changeset
|
2746 n = ((n & 0x3f) << 8) + *p; |
| 1649 | 2747 p = &buf[n]; |
| 2748 | |
| 2749 } else { | |
| 2750 len += 1 + n; | |
| 2751 p = &p[n]; | |
| 2752 } | |
| 2753 | |
| 2754 if (p >= last) { | |
| 2755 err = "name is out of response"; | |
| 2756 goto invalid; | |
| 2757 } | |
| 2758 } | |
| 2759 | |
| 2760 err = "compression pointers loop"; | |
| 2761 | |
| 2762 invalid: | |
| 2763 | |
| 2764 ngx_log_error(r->log_level, r->log, 0, err); | |
| 2765 | |
| 2766 return NGX_ERROR; | |
| 2767 | |
| 2768 done: | |
| 2769 | |
| 2770 if (name == NULL) { | |
| 583 | 2771 return NGX_OK; |
| 2772 } | |
| 2773 | |
|
3298
847ab5a32307
fix "PTR ." case in address resolver
Igor Sysoev <igor@sysoev.ru>
parents:
3297
diff
changeset
|
2774 if (len == -1) { |
|
5764
f166c521b619
Style: use ngx_str_null().
Tatsuhiko Kubo <cubicdaiya@gmail.com>
parents:
5600
diff
changeset
|
2775 ngx_str_null(name); |
|
3298
847ab5a32307
fix "PTR ." case in address resolver
Igor Sysoev <igor@sysoev.ru>
parents:
3297
diff
changeset
|
2776 return NGX_OK; |
|
847ab5a32307
fix "PTR ." case in address resolver
Igor Sysoev <igor@sysoev.ru>
parents:
3297
diff
changeset
|
2777 } |
|
847ab5a32307
fix "PTR ." case in address resolver
Igor Sysoev <igor@sysoev.ru>
parents:
3297
diff
changeset
|
2778 |
| 1649 | 2779 dst = ngx_resolver_alloc(r, len); |
| 2780 if (dst == NULL) { | |
| 2781 return NGX_ERROR; | |
| 2782 } | |
| 2783 | |
| 2784 name->data = dst; | |
| 2785 | |
| 2786 n = *src++; | |
| 2787 | |
| 2788 for ( ;; ) { | |
|
4267
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
2789 if (n & 0xc0) { |
|
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
2790 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
|
2791 src = &buf[n]; |
|
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
2792 |
|
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
2793 n = *src++; |
|
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
2794 |
|
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
2795 } else { |
|
5479
c0d6eae5a1c5
Resolver: lookups are case-insensitive.
Ruslan Ermilov <ru@nginx.com>
parents:
5478
diff
changeset
|
2796 ngx_strlow(dst, src, n); |
| 1649 | 2797 dst += n; |
| 2798 src += n; | |
| 2799 | |
| 2800 n = *src++; | |
| 2801 | |
| 2802 if (n != 0) { | |
| 2803 *dst++ = '.'; | |
| 2804 } | |
| 2805 } | |
| 2806 | |
| 2807 if (n == 0) { | |
| 2808 name->len = dst - name->data; | |
| 2809 return NGX_OK; | |
| 2810 } | |
| 2811 } | |
| 2812 } | |
| 2813 | |
| 2814 | |
| 2815 static void | |
| 2816 ngx_resolver_timeout_handler(ngx_event_t *ev) | |
| 2817 { | |
|
5812
954867a2f0a6
Resolver: notify all waiting requests on timeout.
Ruslan Ermilov <ru@nginx.com>
parents:
5768
diff
changeset
|
2818 ngx_resolver_ctx_t *ctx, *next; |
|
954867a2f0a6
Resolver: notify all waiting requests on timeout.
Ruslan Ermilov <ru@nginx.com>
parents:
5768
diff
changeset
|
2819 ngx_resolver_node_t *rn; |
|
954867a2f0a6
Resolver: notify all waiting requests on timeout.
Ruslan Ermilov <ru@nginx.com>
parents:
5768
diff
changeset
|
2820 |
|
954867a2f0a6
Resolver: notify all waiting requests on timeout.
Ruslan Ermilov <ru@nginx.com>
parents:
5768
diff
changeset
|
2821 rn = ev->data; |
|
954867a2f0a6
Resolver: notify all waiting requests on timeout.
Ruslan Ermilov <ru@nginx.com>
parents:
5768
diff
changeset
|
2822 ctx = rn->waiting; |
|
954867a2f0a6
Resolver: notify all waiting requests on timeout.
Ruslan Ermilov <ru@nginx.com>
parents:
5768
diff
changeset
|
2823 rn->waiting = NULL; |
|
954867a2f0a6
Resolver: notify all waiting requests on timeout.
Ruslan Ermilov <ru@nginx.com>
parents:
5768
diff
changeset
|
2824 |
|
954867a2f0a6
Resolver: notify all waiting requests on timeout.
Ruslan Ermilov <ru@nginx.com>
parents:
5768
diff
changeset
|
2825 do { |
|
954867a2f0a6
Resolver: notify all waiting requests on timeout.
Ruslan Ermilov <ru@nginx.com>
parents:
5768
diff
changeset
|
2826 ctx->state = NGX_RESOLVE_TIMEDOUT; |
|
954867a2f0a6
Resolver: notify all waiting requests on timeout.
Ruslan Ermilov <ru@nginx.com>
parents:
5768
diff
changeset
|
2827 next = ctx->next; |
|
954867a2f0a6
Resolver: notify all waiting requests on timeout.
Ruslan Ermilov <ru@nginx.com>
parents:
5768
diff
changeset
|
2828 |
|
954867a2f0a6
Resolver: notify all waiting requests on timeout.
Ruslan Ermilov <ru@nginx.com>
parents:
5768
diff
changeset
|
2829 ctx->handler(ctx); |
|
954867a2f0a6
Resolver: notify all waiting requests on timeout.
Ruslan Ermilov <ru@nginx.com>
parents:
5768
diff
changeset
|
2830 |
|
954867a2f0a6
Resolver: notify all waiting requests on timeout.
Ruslan Ermilov <ru@nginx.com>
parents:
5768
diff
changeset
|
2831 ctx = next; |
|
954867a2f0a6
Resolver: notify all waiting requests on timeout.
Ruslan Ermilov <ru@nginx.com>
parents:
5768
diff
changeset
|
2832 } while (ctx); |
| 1649 | 2833 } |
| 2834 | |
| 2835 | |
| 2836 static void | |
| 2837 ngx_resolver_free_node(ngx_resolver_t *r, ngx_resolver_node_t *rn) | |
| 2838 { | |
| 2839 /* lock alloc mutex */ | |
| 2840 | |
| 2841 if (rn->query) { | |
| 2842 ngx_resolver_free_locked(r, rn->query); | |
| 2843 } | |
| 2844 | |
| 2845 if (rn->name) { | |
| 2846 ngx_resolver_free_locked(r, rn->name); | |
| 2847 } | |
| 2848 | |
| 2849 if (rn->cnlen) { | |
| 2850 ngx_resolver_free_locked(r, rn->u.cname); | |
| 2851 } | |
| 2852 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2853 if (rn->naddrs > 1 && rn->naddrs != (u_short) -1) { |
| 1649 | 2854 ngx_resolver_free_locked(r, rn->u.addrs); |
| 2855 } | |
| 2856 | |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2857 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2858 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
|
2859 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
|
2860 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2861 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2862 |
| 1649 | 2863 ngx_resolver_free_locked(r, rn); |
| 2864 | |
| 2865 /* unlock alloc mutex */ | |
| 2866 } | |
| 2867 | |
| 2868 | |
| 2869 static void * | |
| 2870 ngx_resolver_alloc(ngx_resolver_t *r, size_t size) | |
| 2871 { | |
| 2872 u_char *p; | |
| 2873 | |
| 2874 /* lock alloc mutex */ | |
| 2875 | |
| 2876 p = ngx_alloc(size, r->log); | |
| 2877 | |
| 2878 /* unlock alloc mutex */ | |
| 2879 | |
| 2880 return p; | |
| 2881 } | |
| 2882 | |
| 2883 | |
| 1903 | 2884 static void * |
| 1649 | 2885 ngx_resolver_calloc(ngx_resolver_t *r, size_t size) |
| 2886 { | |
| 2887 u_char *p; | |
| 2888 | |
| 2889 p = ngx_resolver_alloc(r, size); | |
| 2890 | |
| 2891 if (p) { | |
| 2892 ngx_memzero(p, size); | |
| 2893 } | |
| 2894 | |
| 2895 return p; | |
| 2896 } | |
| 2897 | |
| 2898 | |
| 2899 static void | |
| 2900 ngx_resolver_free(ngx_resolver_t *r, void *p) | |
| 2901 { | |
| 2902 /* lock alloc mutex */ | |
| 2903 | |
| 2904 ngx_free(p); | |
| 2905 | |
| 2906 /* unlock alloc mutex */ | |
| 2907 } | |
| 2908 | |
| 2909 | |
| 2910 static void | |
| 2911 ngx_resolver_free_locked(ngx_resolver_t *r, void *p) | |
| 2912 { | |
| 2913 ngx_free(p); | |
| 2914 } | |
| 2915 | |
| 2916 | |
| 2917 static void * | |
| 2918 ngx_resolver_dup(ngx_resolver_t *r, void *src, size_t size) | |
| 2919 { | |
| 2920 void *dst; | |
| 2921 | |
| 2922 dst = ngx_resolver_alloc(r, size); | |
| 2923 | |
| 2924 if (dst == NULL) { | |
| 2925 return dst; | |
| 2926 } | |
| 2927 | |
| 2928 ngx_memcpy(dst, src, size); | |
| 2929 | |
| 2930 return dst; | |
| 2931 } | |
| 2932 | |
| 2933 | |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2934 static ngx_addr_t * |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2935 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
|
2936 ngx_uint_t rotate) |
|
4871
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
2937 { |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2938 ngx_addr_t *dst; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2939 ngx_uint_t d, i, j, n; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2940 u_char (*sockaddr)[NGX_SOCKADDRLEN]; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2941 in_addr_t *addr; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2942 struct sockaddr_in *sin; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2943 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2944 struct in6_addr *addr6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2945 struct sockaddr_in6 *sin6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2946 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2947 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2948 n = rn->naddrs; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2949 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2950 n += rn->naddrs6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2951 #endif |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2952 |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2953 dst = ngx_resolver_calloc(r, n * sizeof(ngx_addr_t)); |
|
4892
063ac68d89dc
Resolver: added missing memory allocation error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4871
diff
changeset
|
2954 if (dst == NULL) { |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2955 return NULL; |
|
4892
063ac68d89dc
Resolver: added missing memory allocation error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4871
diff
changeset
|
2956 } |
|
063ac68d89dc
Resolver: added missing memory allocation error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4871
diff
changeset
|
2957 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2958 sockaddr = ngx_resolver_calloc(r, n * NGX_SOCKADDRLEN); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2959 if (sockaddr == NULL) { |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2960 ngx_resolver_free(r, dst); |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2961 return NULL; |
|
4871
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
2962 } |
|
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
2963 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2964 i = 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2965 d = rotate ? ngx_random() % n : 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2966 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2967 if (rn->naddrs) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2968 j = rotate ? ngx_random() % rn->naddrs : 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2969 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2970 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
|
2971 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2972 do { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2973 sin = (struct sockaddr_in *) sockaddr[d]; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2974 sin->sin_family = AF_INET; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2975 sin->sin_addr.s_addr = addr[j++]; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2976 dst[d].sockaddr = (struct sockaddr *) sin; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2977 dst[d++].socklen = sizeof(struct sockaddr_in); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2978 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2979 if (d == n) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2980 d = 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2981 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2982 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2983 if (j == rn->naddrs) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2984 j = 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2985 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2986 } while (++i < rn->naddrs); |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2987 } |
|
4871
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
2988 |
|
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2989 #if (NGX_HAVE_INET6) |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2990 if (rn->naddrs6) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2991 j = rotate ? ngx_random() % rn->naddrs6 : 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2992 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2993 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
|
2994 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2995 do { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2996 sin6 = (struct sockaddr_in6 *) sockaddr[d]; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2997 sin6->sin6_family = AF_INET6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2998 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
|
2999 dst[d].sockaddr = (struct sockaddr *) sin6; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3000 dst[d++].socklen = sizeof(struct sockaddr_in6); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3001 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3002 if (d == n) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3003 d = 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3004 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3005 |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3006 if (j == rn->naddrs6) { |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3007 j = 0; |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3008 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3009 } while (++i < n); |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3010 } |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3011 #endif |
|
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
3012 |
|
4871
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
3013 return dst; |
|
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
3014 } |
|
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
3015 |
|
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
3016 |
| 1649 | 3017 char * |
| 3018 ngx_resolver_strerror(ngx_int_t err) | |
| 3019 { | |
| 3020 static char *errors[] = { | |
| 3021 "Format error", /* FORMERR */ | |
| 3022 "Server failure", /* SERVFAIL */ | |
| 3023 "Host not found", /* NXDOMAIN */ | |
| 3024 "Unimplemented", /* NOTIMP */ | |
| 3025 "Operation refused" /* REFUSED */ | |
| 3026 }; | |
| 3027 | |
| 3028 if (err > 0 && err < 6) { | |
| 3029 return errors[err - 1]; | |
| 3030 } | |
| 3031 | |
| 3032 if (err == NGX_RESOLVE_TIMEDOUT) { | |
| 3033 return "Operation timed out"; | |
| 3034 } | |
| 3035 | |
| 3036 return "Unknown error"; | |
| 3037 } | |
| 3038 | |
| 3039 | |
|
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3040 static u_char * |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3041 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
|
3042 { |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3043 u_char *p; |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3044 ngx_udp_connection_t *uc; |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3045 |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3046 p = buf; |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3047 |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3048 if (log->action) { |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3049 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
|
3050 len -= p - buf; |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3051 } |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3052 |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3053 uc = log->data; |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3054 |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3055 if (uc) { |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3056 p = ngx_snprintf(p, len, ", resolver: %V", &uc->server); |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3057 } |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3058 |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3059 return p; |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3060 } |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3061 |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3062 |
| 1649 | 3063 ngx_int_t |
| 3064 ngx_udp_connect(ngx_udp_connection_t *uc) | |
| 3065 { | |
| 3066 int rc; | |
| 3067 ngx_int_t event; | |
| 3068 ngx_event_t *rev, *wev; | |
| 3069 ngx_socket_t s; | |
| 3070 ngx_connection_t *c; | |
| 3071 | |
|
4671
af9342747669
Support for IPv6 literals and an optional port in resolver.
Ruslan Ermilov <ru@nginx.com>
parents:
4653
diff
changeset
|
3072 s = ngx_socket(uc->sockaddr->sa_family, SOCK_DGRAM, 0); |
| 583 | 3073 |
|
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3074 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, &uc->log, 0, "UDP socket %d", s); |
| 583 | 3075 |
|
5360
3d2d3e1cf427
Win32: MinGW GCC compatibility.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4892
diff
changeset
|
3076 if (s == (ngx_socket_t) -1) { |
|
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3077 ngx_log_error(NGX_LOG_ALERT, &uc->log, ngx_socket_errno, |
| 583 | 3078 ngx_socket_n " failed"); |
| 3079 return NGX_ERROR; | |
| 3080 } | |
| 3081 | |
|
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3082 c = ngx_get_connection(s, &uc->log); |
| 583 | 3083 |
| 3084 if (c == NULL) { | |
| 3085 if (ngx_close_socket(s) == -1) { | |
|
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3086 ngx_log_error(NGX_LOG_ALERT, &uc->log, ngx_socket_errno, |
| 583 | 3087 ngx_close_socket_n "failed"); |
| 3088 } | |
| 3089 | |
| 3090 return NGX_ERROR; | |
| 3091 } | |
| 3092 | |
| 1649 | 3093 if (ngx_nonblocking(s) == -1) { |
|
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3094 ngx_log_error(NGX_LOG_ALERT, &uc->log, ngx_socket_errno, |
| 1649 | 3095 ngx_nonblocking_n " failed"); |
| 3096 | |
|
5582
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
3097 goto failed; |
| 1649 | 3098 } |
| 3099 | |
| 583 | 3100 rev = c->read; |
| 3101 wev = c->write; | |
| 3102 | |
|
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3103 rev->log = &uc->log; |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3104 wev->log = &uc->log; |
| 1649 | 3105 |
| 3106 uc->connection = c; | |
| 583 | 3107 |
| 3108 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1); | |
| 3109 | |
|
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3110 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, &uc->log, 0, |
|
5600
957d734362ed
Fixed format specifier in logging of "c->number".
Sergey Kandaurov <pluknet@nginx.com>
parents:
5582
diff
changeset
|
3111 "connect to %V, fd:%d #%uA", &uc->server, s, c->number); |
| 1649 | 3112 |
| 3113 rc = connect(s, uc->sockaddr, uc->socklen); | |
| 3114 | |
|
6125
4dc8e7b62216
Removed the obsolete aio module.
Ruslan Ermilov <ru@nginx.com>
parents:
5921
diff
changeset
|
3115 /* TODO: iocp */ |
| 583 | 3116 |
| 3117 if (rc == -1) { | |
|
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3118 ngx_log_error(NGX_LOG_CRIT, &uc->log, ngx_socket_errno, |
|
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3119 "connect() failed"); |
| 583 | 3120 |
|
5582
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
3121 goto failed; |
| 583 | 3122 } |
| 3123 | |
| 1649 | 3124 /* UDP sockets are always ready to write */ |
| 3125 wev->ready = 1; | |
| 3126 | |
|
6126
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
3127 event = (ngx_event_flags & NGX_USE_CLEAR_EVENT) ? |
|
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
3128 /* kqueue, epoll */ NGX_CLEAR_EVENT: |
|
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
3129 /* select, poll, /dev/poll */ NGX_LEVEL_EVENT; |
|
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
3130 /* eventport event type has no meaning: oneshot only */ |
|
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
3131 |
|
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
3132 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
|
3133 goto failed; |
| 583 | 3134 } |
| 3135 | |
| 3136 return NGX_OK; | |
|
5582
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
3137 |
|
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
3138 failed: |
|
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
3139 |
|
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
3140 ngx_close_connection(c); |
|
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
3141 uc->connection = NULL; |
|
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
3142 |
|
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
3143 return NGX_ERROR; |
| 583 | 3144 } |