Mercurial > hg > nginx-quic
annotate src/core/ngx_resolver.c @ 5803:ecfc601f1225
Events: format specifier fixes.
author | Yves Crespin <yves.crespin@e-quartz.fr> |
---|---|
date | Thu, 07 Aug 2014 15:04:43 +0200 |
parents | 70a0408cca7b |
children | 954867a2f0a6 |
rev | line source |
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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 | |
51 ngx_int_t ngx_udp_connect(ngx_udp_connection_t *uc); | |
52 | |
53 | |
1906 | 54 static void ngx_resolver_cleanup(void *data); |
55 static void ngx_resolver_cleanup_tree(ngx_resolver_t *r, ngx_rbtree_t *tree); | |
1649 | 56 static ngx_int_t ngx_resolve_name_locked(ngx_resolver_t *r, |
57 ngx_resolver_ctx_t *ctx); | |
58 static void ngx_resolver_expire(ngx_resolver_t *r, ngx_rbtree_t *tree, | |
59 ngx_queue_t *queue); | |
60 static ngx_int_t ngx_resolver_send_query(ngx_resolver_t *r, | |
61 ngx_resolver_node_t *rn); | |
62 static ngx_int_t ngx_resolver_create_name_query(ngx_resolver_node_t *rn, | |
63 ngx_resolver_ctx_t *ctx); | |
64 static ngx_int_t ngx_resolver_create_addr_query(ngx_resolver_node_t *rn, | |
65 ngx_resolver_ctx_t *ctx); | |
66 static void ngx_resolver_resend_handler(ngx_event_t *ev); | |
67 static time_t ngx_resolver_resend(ngx_resolver_t *r, ngx_rbtree_t *tree, | |
68 ngx_queue_t *queue); | |
69 static void ngx_resolver_read_response(ngx_event_t *rev); | |
70 static void ngx_resolver_process_response(ngx_resolver_t *r, u_char *buf, | |
71 size_t n); | |
72 static void ngx_resolver_process_a(ngx_resolver_t *r, u_char *buf, size_t n, | |
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73 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t qtype, |
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74 ngx_uint_t nan, ngx_uint_t ans); |
1649 | 75 static void ngx_resolver_process_ptr(ngx_resolver_t *r, u_char *buf, size_t n, |
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76 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan); |
1649 | 77 static ngx_resolver_node_t *ngx_resolver_lookup_name(ngx_resolver_t *r, |
78 ngx_str_t *name, uint32_t hash); | |
79 static ngx_resolver_node_t *ngx_resolver_lookup_addr(ngx_resolver_t *r, | |
80 in_addr_t addr); | |
81 static void ngx_resolver_rbtree_insert_value(ngx_rbtree_node_t *temp, | |
82 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel); | |
83 static ngx_int_t ngx_resolver_copy(ngx_resolver_t *r, ngx_str_t *name, | |
84 u_char *buf, u_char *src, u_char *last); | |
85 static void ngx_resolver_timeout_handler(ngx_event_t *ev); | |
86 static void ngx_resolver_free_node(ngx_resolver_t *r, ngx_resolver_node_t *rn); | |
87 static void *ngx_resolver_alloc(ngx_resolver_t *r, size_t size); | |
1903 | 88 static void *ngx_resolver_calloc(ngx_resolver_t *r, size_t size); |
1649 | 89 static void ngx_resolver_free(ngx_resolver_t *r, void *p); |
90 static void ngx_resolver_free_locked(ngx_resolver_t *r, void *p); | |
91 static void *ngx_resolver_dup(ngx_resolver_t *r, void *src, size_t size); | |
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92 static ngx_addr_t *ngx_resolver_export(ngx_resolver_t *r, |
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93 ngx_resolver_node_t *rn, ngx_uint_t rotate); |
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94 static u_char *ngx_resolver_log_error(ngx_log_t *log, u_char *buf, size_t len); |
1649 | 95 |
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96 #if (NGX_HAVE_INET6) |
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97 static void ngx_resolver_rbtree_insert_addr6_value(ngx_rbtree_node_t *temp, |
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98 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel); |
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99 static ngx_resolver_node_t *ngx_resolver_lookup_addr6(ngx_resolver_t *r, |
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100 struct in6_addr *addr, uint32_t hash); |
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101 #endif |
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102 |
1649 | 103 |
104 ngx_resolver_t * | |
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105 ngx_resolver_create(ngx_conf_t *cf, ngx_str_t *names, ngx_uint_t n) |
1649 | 106 { |
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107 ngx_str_t s; |
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108 ngx_url_t u; |
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109 ngx_uint_t i, j; |
1649 | 110 ngx_resolver_t *r; |
1906 | 111 ngx_pool_cleanup_t *cln; |
1649 | 112 ngx_udp_connection_t *uc; |
113 | |
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114 cln = ngx_pool_cleanup_add(cf->pool, 0); |
1906 | 115 if (cln == NULL) { |
116 return NULL; | |
117 } | |
118 | |
119 cln->handler = ngx_resolver_cleanup; | |
120 | |
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121 r = ngx_calloc(sizeof(ngx_resolver_t), cf->log); |
1649 | 122 if (r == NULL) { |
123 return NULL; | |
124 } | |
125 | |
1906 | 126 cln->data = r; |
127 | |
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128 r->event = ngx_calloc(sizeof(ngx_event_t), cf->log); |
1649 | 129 if (r->event == NULL) { |
130 return NULL; | |
131 } | |
132 | |
1687 | 133 ngx_rbtree_init(&r->name_rbtree, &r->name_sentinel, |
134 ngx_resolver_rbtree_insert_value); | |
135 | |
136 ngx_rbtree_init(&r->addr_rbtree, &r->addr_sentinel, | |
137 ngx_rbtree_insert_value); | |
1649 | 138 |
1685 | 139 ngx_queue_init(&r->name_resend_queue); |
140 ngx_queue_init(&r->addr_resend_queue); | |
141 | |
142 ngx_queue_init(&r->name_expire_queue); | |
143 ngx_queue_init(&r->addr_expire_queue); | |
1649 | 144 |
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145 #if (NGX_HAVE_INET6) |
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146 r->ipv6 = 1; |
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147 |
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148 ngx_rbtree_init(&r->addr6_rbtree, &r->addr6_sentinel, |
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149 ngx_resolver_rbtree_insert_addr6_value); |
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150 |
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151 ngx_queue_init(&r->addr6_resend_queue); |
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152 |
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153 ngx_queue_init(&r->addr6_expire_queue); |
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154 #endif |
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155 |
1649 | 156 r->event->handler = ngx_resolver_resend_handler; |
157 r->event->data = r; | |
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158 r->event->log = &cf->cycle->new_log; |
1649 | 159 r->ident = -1; |
160 | |
161 r->resend_timeout = 5; | |
162 r->expire = 30; | |
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163 r->valid = 0; |
1649 | 164 |
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165 r->log = &cf->cycle->new_log; |
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166 r->log_level = NGX_LOG_ERR; |
1649 | 167 |
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168 if (n) { |
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169 if (ngx_array_init(&r->udp_connections, cf->pool, n, |
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170 sizeof(ngx_udp_connection_t)) |
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171 != NGX_OK) |
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172 { |
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173 return NULL; |
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174 } |
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175 } |
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176 |
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177 for (i = 0; i < n; i++) { |
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178 if (ngx_strncmp(names[i].data, "valid=", 6) == 0) { |
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179 s.len = names[i].len - 6; |
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180 s.data = names[i].data + 6; |
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181 |
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182 r->valid = ngx_parse_time(&s, 1); |
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183 |
4474 | 184 if (r->valid == (time_t) NGX_ERROR) { |
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185 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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186 "invalid parameter: %V", &names[i]); |
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187 return NULL; |
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188 } |
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189 |
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190 continue; |
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191 } |
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192 |
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193 #if (NGX_HAVE_INET6) |
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194 if (ngx_strncmp(names[i].data, "ipv6=", 5) == 0) { |
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195 |
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196 if (ngx_strcmp(&names[i].data[5], "on") == 0) { |
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197 r->ipv6 = 1; |
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198 |
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199 } else if (ngx_strcmp(&names[i].data[5], "off") == 0) { |
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200 r->ipv6 = 0; |
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201 |
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202 } else { |
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203 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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204 "invalid parameter: %V", &names[i]); |
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205 return NULL; |
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206 } |
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207 |
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208 continue; |
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209 } |
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210 #endif |
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211 |
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212 ngx_memzero(&u, sizeof(ngx_url_t)); |
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213 |
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214 u.url = names[i]; |
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215 u.default_port = 53; |
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216 |
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217 if (ngx_parse_url(cf->pool, &u) != NGX_OK) { |
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218 if (u.err) { |
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219 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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220 "%s in resolver \"%V\"", |
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221 u.err, &u.url); |
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222 } |
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223 |
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224 return NULL; |
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225 } |
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226 |
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227 uc = ngx_array_push_n(&r->udp_connections, u.naddrs); |
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228 if (uc == NULL) { |
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229 return NULL; |
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230 } |
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231 |
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232 ngx_memzero(uc, u.naddrs * sizeof(ngx_udp_connection_t)); |
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233 |
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234 for (j = 0; j < u.naddrs; j++) { |
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235 uc[j].sockaddr = u.addrs[j].sockaddr; |
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236 uc[j].socklen = u.addrs[j].socklen; |
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237 uc[j].server = u.addrs[j].name; |
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238 } |
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239 } |
1649 | 240 |
241 return r; | |
242 } | |
243 | |
244 | |
1906 | 245 static void |
246 ngx_resolver_cleanup(void *data) | |
247 { | |
248 ngx_resolver_t *r = data; | |
249 | |
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250 ngx_uint_t i; |
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251 ngx_udp_connection_t *uc; |
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252 |
1906 | 253 if (r) { |
254 ngx_log_debug0(NGX_LOG_DEBUG_CORE, ngx_cycle->log, 0, | |
255 "cleanup resolver"); | |
256 | |
257 ngx_resolver_cleanup_tree(r, &r->name_rbtree); | |
258 | |
259 ngx_resolver_cleanup_tree(r, &r->addr_rbtree); | |
260 | |
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261 #if (NGX_HAVE_INET6) |
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262 ngx_resolver_cleanup_tree(r, &r->addr6_rbtree); |
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263 #endif |
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264 |
1906 | 265 if (r->event) { |
266 ngx_free(r->event); | |
267 } | |
268 | |
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269 |
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270 uc = r->udp_connections.elts; |
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271 |
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272 for (i = 0; i < r->udp_connections.nelts; i++) { |
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273 if (uc[i].connection) { |
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274 ngx_close_connection(uc[i].connection); |
1906 | 275 } |
276 } | |
277 | |
278 ngx_free(r); | |
279 } | |
280 } | |
281 | |
282 | |
283 static void | |
284 ngx_resolver_cleanup_tree(ngx_resolver_t *r, ngx_rbtree_t *tree) | |
285 { | |
286 ngx_resolver_ctx_t *ctx, *next; | |
287 ngx_resolver_node_t *rn; | |
288 | |
289 while (tree->root != tree->sentinel) { | |
290 | |
291 rn = (ngx_resolver_node_t *) ngx_rbtree_min(tree->root, tree->sentinel); | |
292 | |
293 ngx_queue_remove(&rn->queue); | |
294 | |
295 for (ctx = rn->waiting; ctx; ctx = next) { | |
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296 next = ctx->next; |
1906 | 297 |
298 if (ctx->event) { | |
299 ngx_resolver_free(r, ctx->event); | |
300 } | |
301 | |
302 ngx_resolver_free(r, ctx); | |
303 } | |
304 | |
305 ngx_rbtree_delete(tree, &rn->node); | |
306 | |
307 ngx_resolver_free_node(r, rn); | |
308 } | |
309 } | |
310 | |
311 | |
1649 | 312 ngx_resolver_ctx_t * |
313 ngx_resolve_start(ngx_resolver_t *r, ngx_resolver_ctx_t *temp) | |
314 { | |
315 in_addr_t addr; | |
316 ngx_resolver_ctx_t *ctx; | |
317 | |
318 if (temp) { | |
319 addr = ngx_inet_addr(temp->name.data, temp->name.len); | |
320 | |
321 if (addr != INADDR_NONE) { | |
322 temp->resolver = r; | |
323 temp->state = NGX_OK; | |
324 temp->naddrs = 1; | |
325 temp->addrs = &temp->addr; | |
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326 temp->addr.sockaddr = (struct sockaddr *) &temp->sin; |
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327 temp->addr.socklen = sizeof(struct sockaddr_in); |
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328 ngx_memzero(&temp->sin, sizeof(struct sockaddr_in)); |
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329 temp->sin.sin_family = AF_INET; |
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330 temp->sin.sin_addr.s_addr = addr; |
1649 | 331 temp->quick = 1; |
332 | |
333 return temp; | |
334 } | |
335 } | |
336 | |
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337 if (r->udp_connections.nelts == 0) { |
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338 return NGX_NO_RESOLVER; |
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339 } |
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340 |
1649 | 341 ctx = ngx_resolver_calloc(r, sizeof(ngx_resolver_ctx_t)); |
342 | |
343 if (ctx) { | |
344 ctx->resolver = r; | |
345 } | |
346 | |
347 return ctx; | |
348 } | |
349 | |
350 | |
351 ngx_int_t | |
352 ngx_resolve_name(ngx_resolver_ctx_t *ctx) | |
353 { | |
354 ngx_int_t rc; | |
355 ngx_resolver_t *r; | |
356 | |
357 r = ctx->resolver; | |
358 | |
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359 if (ctx->name.len > 0 && ctx->name.data[ctx->name.len - 1] == '.') { |
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360 ctx->name.len--; |
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361 } |
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362 |
1649 | 363 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, |
364 "resolve: \"%V\"", &ctx->name); | |
365 | |
366 if (ctx->quick) { | |
367 ctx->handler(ctx); | |
368 return NGX_OK; | |
369 } | |
370 | |
371 /* lock name mutex */ | |
372 | |
373 rc = ngx_resolve_name_locked(r, ctx); | |
374 | |
375 if (rc == NGX_OK) { | |
376 return NGX_OK; | |
377 } | |
378 | |
379 /* unlock name mutex */ | |
380 | |
381 if (rc == NGX_AGAIN) { | |
382 return NGX_OK; | |
383 } | |
384 | |
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385 /* NGX_ERROR */ |
1649 | 386 |
387 if (ctx->event) { | |
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388 ngx_resolver_free(r, ctx->event); |
1649 | 389 } |
390 | |
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391 ngx_resolver_free(r, ctx); |
1649 | 392 |
393 return NGX_ERROR; | |
394 } | |
395 | |
396 | |
397 void | |
398 ngx_resolve_name_done(ngx_resolver_ctx_t *ctx) | |
399 { | |
400 uint32_t hash; | |
401 ngx_resolver_t *r; | |
402 ngx_resolver_ctx_t *w, **p; | |
403 ngx_resolver_node_t *rn; | |
404 | |
405 r = ctx->resolver; | |
406 | |
407 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, | |
408 "resolve name done: %i", ctx->state); | |
409 | |
410 if (ctx->quick) { | |
411 return; | |
412 } | |
413 | |
414 if (ctx->event && ctx->event->timer_set) { | |
415 ngx_del_timer(ctx->event); | |
416 } | |
417 | |
418 /* lock name mutex */ | |
419 | |
420 if (ctx->state == NGX_AGAIN || ctx->state == NGX_RESOLVE_TIMEDOUT) { | |
421 | |
422 hash = ngx_crc32_short(ctx->name.data, ctx->name.len); | |
423 | |
424 rn = ngx_resolver_lookup_name(r, &ctx->name, hash); | |
425 | |
426 if (rn) { | |
427 p = &rn->waiting; | |
428 w = rn->waiting; | |
429 | |
430 while (w) { | |
431 if (w == ctx) { | |
432 *p = w->next; | |
433 | |
434 goto done; | |
435 } | |
436 | |
437 p = &w->next; | |
438 w = w->next; | |
439 } | |
440 } | |
441 | |
442 ngx_log_error(NGX_LOG_ALERT, r->log, 0, | |
443 "could not cancel %V resolving", &ctx->name); | |
444 } | |
445 | |
446 done: | |
447 | |
448 ngx_resolver_expire(r, &r->name_rbtree, &r->name_expire_queue); | |
449 | |
450 /* unlock name mutex */ | |
451 | |
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452 /* lock alloc mutex */ |
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453 |
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454 if (ctx->event) { |
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455 ngx_resolver_free_locked(r, ctx->event); |
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456 } |
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457 |
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458 ngx_resolver_free_locked(r, ctx); |
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459 |
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460 /* unlock alloc mutex */ |
1649 | 461 } |
462 | |
463 | |
464 static ngx_int_t | |
465 ngx_resolve_name_locked(ngx_resolver_t *r, ngx_resolver_ctx_t *ctx) | |
466 { | |
467 uint32_t hash; | |
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468 ngx_int_t rc; |
1649 | 469 ngx_uint_t naddrs; |
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470 ngx_addr_t *addrs; |
1649 | 471 ngx_resolver_ctx_t *next; |
472 ngx_resolver_node_t *rn; | |
473 | |
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474 ngx_strlow(ctx->name.data, ctx->name.data, ctx->name.len); |
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475 |
1649 | 476 hash = ngx_crc32_short(ctx->name.data, ctx->name.len); |
477 | |
478 rn = ngx_resolver_lookup_name(r, &ctx->name, hash); | |
479 | |
480 if (rn) { | |
481 | |
482 if (rn->valid >= ngx_time()) { | |
483 | |
484 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, "resolve cached"); | |
485 | |
486 ngx_queue_remove(&rn->queue); | |
487 | |
488 rn->expire = ngx_time() + r->expire; | |
489 | |
490 ngx_queue_insert_head(&r->name_expire_queue, &rn->queue); | |
491 | |
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492 naddrs = (rn->naddrs == (u_short) -1) ? 0 : rn->naddrs; |
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493 #if (NGX_HAVE_INET6) |
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494 naddrs += (rn->naddrs6 == (u_short) -1) ? 0 : rn->naddrs6; |
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495 #endif |
1649 | 496 |
497 if (naddrs) { | |
498 | |
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499 if (naddrs == 1 && rn->naddrs == 1) { |
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500 addrs = NULL; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
501 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
502 } else { |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
503 addrs = ngx_resolver_export(r, rn, 1); |
1649 | 504 if (addrs == NULL) { |
505 return NGX_ERROR; | |
506 } | |
507 } | |
508 | |
509 ctx->next = rn->waiting; | |
510 rn->waiting = NULL; | |
511 | |
512 /* unlock name mutex */ | |
513 | |
514 do { | |
515 ctx->state = NGX_OK; | |
516 ctx->naddrs = naddrs; | |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
517 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
518 if (addrs == NULL) { |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
519 ctx->addrs = &ctx->addr; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
520 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
|
521 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
|
522 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
|
523 ctx->sin.sin_family = AF_INET; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
524 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
|
525 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
526 } else { |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
527 ctx->addrs = addrs; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
528 } |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
529 |
1649 | 530 next = ctx->next; |
531 | |
532 ctx->handler(ctx); | |
533 | |
534 ctx = next; | |
535 } while (ctx); | |
536 | |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
537 if (addrs != NULL) { |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
538 ngx_resolver_free(r, addrs->sockaddr); |
1649 | 539 ngx_resolver_free(r, addrs); |
540 } | |
541 | |
542 return NGX_OK; | |
543 } | |
544 | |
545 /* NGX_RESOLVE_CNAME */ | |
546 | |
1969 | 547 if (ctx->recursion++ < NGX_RESOLVER_MAX_RECURSION) { |
548 | |
549 ctx->name.len = rn->cnlen; | |
550 ctx->name.data = rn->u.cname; | |
551 | |
552 return ngx_resolve_name_locked(r, ctx); | |
553 } | |
554 | |
555 ctx->next = rn->waiting; | |
556 rn->waiting = NULL; | |
557 | |
558 /* unlock name mutex */ | |
559 | |
560 do { | |
561 ctx->state = NGX_RESOLVE_NXDOMAIN; | |
562 next = ctx->next; | |
563 | |
564 ctx->handler(ctx); | |
565 | |
566 ctx = next; | |
567 } while (ctx); | |
568 | |
569 return NGX_OK; | |
1649 | 570 } |
571 | |
572 if (rn->waiting) { | |
573 | |
574 ctx->next = rn->waiting; | |
575 rn->waiting = ctx; | |
3297 | 576 ctx->state = NGX_AGAIN; |
1649 | 577 |
578 return NGX_AGAIN; | |
579 } | |
580 | |
581 ngx_queue_remove(&rn->queue); | |
582 | |
583 /* lock alloc mutex */ | |
584 | |
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
585 if (rn->query) { |
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
586 ngx_resolver_free_locked(r, rn->query); |
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
587 rn->query = NULL; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
588 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
589 rn->query6 = NULL; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
590 #endif |
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
591 } |
1649 | 592 |
593 if (rn->cnlen) { | |
594 ngx_resolver_free_locked(r, rn->u.cname); | |
595 } | |
596 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
597 if (rn->naddrs > 1 && rn->naddrs != (u_short) -1) { |
1649 | 598 ngx_resolver_free_locked(r, rn->u.addrs); |
599 } | |
600 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
601 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
602 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
|
603 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
|
604 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
605 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
606 |
1649 | 607 /* unlock alloc mutex */ |
608 | |
609 } else { | |
610 | |
611 rn = ngx_resolver_alloc(r, sizeof(ngx_resolver_node_t)); | |
612 if (rn == NULL) { | |
613 return NGX_ERROR; | |
614 } | |
615 | |
616 rn->name = ngx_resolver_dup(r, ctx->name.data, ctx->name.len); | |
617 if (rn->name == NULL) { | |
618 ngx_resolver_free(r, rn); | |
619 return NGX_ERROR; | |
620 } | |
621 | |
622 rn->node.key = hash; | |
623 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
|
624 rn->query = NULL; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
625 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
626 rn->query6 = NULL; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
627 #endif |
1649 | 628 |
629 ngx_rbtree_insert(&r->name_rbtree, &rn->node); | |
630 } | |
631 | |
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
632 rc = ngx_resolver_create_name_query(rn, ctx); |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
633 |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
634 if (rc == NGX_ERROR) { |
1649 | 635 goto failed; |
636 } | |
637 | |
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
638 if (rc == NGX_DECLINED) { |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
639 ngx_rbtree_delete(&r->name_rbtree, &rn->node); |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
640 |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
641 ngx_resolver_free(r, rn->query); |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
642 ngx_resolver_free(r, rn->name); |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
643 ngx_resolver_free(r, rn); |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
644 |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
645 ctx->state = NGX_RESOLVE_NXDOMAIN; |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
646 ctx->handler(ctx); |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
647 |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
648 return NGX_OK; |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
649 } |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
650 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
651 rn->naddrs = (u_short) -1; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
652 #if (NGX_HAVE_INET6) |
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
653 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
|
654 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
655 |
1649 | 656 if (ngx_resolver_send_query(r, rn) != NGX_OK) { |
657 goto failed; | |
658 } | |
659 | |
660 if (ctx->event == NULL) { | |
661 ctx->event = ngx_resolver_calloc(r, sizeof(ngx_event_t)); | |
662 if (ctx->event == NULL) { | |
663 goto failed; | |
664 } | |
665 | |
666 ctx->event->handler = ngx_resolver_timeout_handler; | |
667 ctx->event->data = ctx; | |
668 ctx->event->log = r->log; | |
669 ctx->ident = -1; | |
670 | |
671 ngx_add_timer(ctx->event, ctx->timeout); | |
672 } | |
673 | |
674 if (ngx_queue_empty(&r->name_resend_queue)) { | |
675 ngx_add_timer(r->event, (ngx_msec_t) (r->resend_timeout * 1000)); | |
676 } | |
677 | |
678 rn->expire = ngx_time() + r->resend_timeout; | |
679 | |
680 ngx_queue_insert_head(&r->name_resend_queue, &rn->queue); | |
681 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
682 rn->code = 0; |
1649 | 683 rn->cnlen = 0; |
684 rn->valid = 0; | |
5485
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
685 rn->ttl = NGX_MAX_UINT32_VALUE; |
1649 | 686 rn->waiting = ctx; |
687 | |
688 ctx->state = NGX_AGAIN; | |
689 | |
690 return NGX_AGAIN; | |
691 | |
692 failed: | |
693 | |
694 ngx_rbtree_delete(&r->name_rbtree, &rn->node); | |
695 | |
1960
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
696 if (rn->query) { |
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
697 ngx_resolver_free(r, rn->query); |
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
698 } |
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
699 |
1649 | 700 ngx_resolver_free(r, rn->name); |
701 | |
702 ngx_resolver_free(r, rn); | |
703 | |
704 return NGX_ERROR; | |
705 } | |
583 | 706 |
707 | |
708 ngx_int_t | |
1649 | 709 ngx_resolve_addr(ngx_resolver_ctx_t *ctx) |
710 { | |
2484
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
711 u_char *name; |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
712 in_addr_t addr; |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
713 ngx_queue_t *resend_queue, *expire_queue; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
714 ngx_rbtree_t *tree; |
1649 | 715 ngx_resolver_t *r; |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
716 struct sockaddr_in *sin; |
1649 | 717 ngx_resolver_node_t *rn; |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
718 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
719 uint32_t hash; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
720 struct sockaddr_in6 *sin6; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
721 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
722 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
723 #if (NGX_SUPPRESS_WARN) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
724 addr = 0; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
725 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
726 hash = 0; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
727 sin6 = NULL; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
728 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
729 #endif |
1649 | 730 |
731 r = ctx->resolver; | |
732 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
733 switch (ctx->addr.sockaddr->sa_family) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
734 |
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 case AF_INET6: |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
737 sin6 = (struct sockaddr_in6 *) ctx->addr.sockaddr; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
738 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
|
739 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
740 /* lock addr mutex */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
741 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
742 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
|
743 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
744 tree = &r->addr6_rbtree; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
745 resend_queue = &r->addr6_resend_queue; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
746 expire_queue = &r->addr6_expire_queue; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
747 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
748 break; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
749 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
750 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
751 default: /* AF_INET */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
752 sin = (struct sockaddr_in *) ctx->addr.sockaddr; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
753 addr = ntohl(sin->sin_addr.s_addr); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
754 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
755 /* lock addr mutex */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
756 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
757 rn = ngx_resolver_lookup_addr(r, addr); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
758 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
759 tree = &r->addr_rbtree; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
760 resend_queue = &r->addr_resend_queue; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
761 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
|
762 } |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
763 |
1649 | 764 if (rn) { |
765 | |
766 if (rn->valid >= ngx_time()) { | |
767 | |
768 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, "resolve cached"); | |
769 | |
770 ngx_queue_remove(&rn->queue); | |
771 | |
772 rn->expire = ngx_time() + r->expire; | |
773 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
774 ngx_queue_insert_head(expire_queue, &rn->queue); |
1649 | 775 |
2484
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
776 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
|
777 if (name == NULL) { |
1649 | 778 goto failed; |
779 } | |
780 | |
2484
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
781 ctx->name.len = rn->nlen; |
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
782 ctx->name.data = name; |
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
783 |
1649 | 784 /* unlock addr mutex */ |
785 | |
786 ctx->state = NGX_OK; | |
787 | |
788 ctx->handler(ctx); | |
789 | |
2484
cf3cd450049c
store name pointer in variable allocated on stack
Igor Sysoev <igor@sysoev.ru>
parents:
2483
diff
changeset
|
790 ngx_resolver_free(r, name); |
1649 | 791 |
792 return NGX_OK; | |
793 } | |
794 | |
795 if (rn->waiting) { | |
796 | |
797 ctx->next = rn->waiting; | |
798 rn->waiting = ctx; | |
3297 | 799 ctx->state = NGX_AGAIN; |
1649 | 800 |
2487
9b4dce95c744
fix return code, this fixes segfault when two or more
Igor Sysoev <igor@sysoev.ru>
parents:
2486
diff
changeset
|
801 /* unlock addr mutex */ |
9b4dce95c744
fix return code, this fixes segfault when two or more
Igor Sysoev <igor@sysoev.ru>
parents:
2486
diff
changeset
|
802 |
9b4dce95c744
fix return code, this fixes segfault when two or more
Igor Sysoev <igor@sysoev.ru>
parents:
2486
diff
changeset
|
803 return NGX_OK; |
1649 | 804 } |
805 | |
806 ngx_queue_remove(&rn->queue); | |
807 | |
808 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
|
809 rn->query = NULL; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
810 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
811 rn->query6 = NULL; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
812 #endif |
1649 | 813 |
814 } else { | |
815 rn = ngx_resolver_alloc(r, sizeof(ngx_resolver_node_t)); | |
816 if (rn == NULL) { | |
817 goto failed; | |
818 } | |
819 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
820 switch (ctx->addr.sockaddr->sa_family) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
821 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
822 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
823 case AF_INET6: |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
824 rn->addr6 = sin6->sin6_addr; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
825 rn->node.key = hash; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
826 break; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
827 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
828 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
829 default: /* AF_INET */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
830 rn->node.key = addr; |
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 |
1960
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
833 rn->query = NULL; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
834 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
835 rn->query6 = NULL; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
836 #endif |
1649 | 837 |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
838 ngx_rbtree_insert(tree, &rn->node); |
1649 | 839 } |
840 | |
841 if (ngx_resolver_create_addr_query(rn, ctx) != NGX_OK) { | |
842 goto failed; | |
843 } | |
844 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
845 rn->naddrs = (u_short) -1; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
846 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
847 rn->naddrs6 = (u_short) -1; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
848 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
849 |
1649 | 850 if (ngx_resolver_send_query(r, rn) != NGX_OK) { |
851 goto failed; | |
852 } | |
853 | |
854 ctx->event = ngx_resolver_calloc(r, sizeof(ngx_event_t)); | |
855 if (ctx->event == NULL) { | |
856 goto failed; | |
857 } | |
858 | |
859 ctx->event->handler = ngx_resolver_timeout_handler; | |
860 ctx->event->data = ctx; | |
861 ctx->event->log = r->log; | |
862 ctx->ident = -1; | |
863 | |
864 ngx_add_timer(ctx->event, ctx->timeout); | |
865 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
866 if (ngx_queue_empty(resend_queue)) { |
1649 | 867 ngx_add_timer(r->event, (ngx_msec_t) (r->resend_timeout * 1000)); |
868 } | |
869 | |
870 rn->expire = ngx_time() + r->resend_timeout; | |
871 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
872 ngx_queue_insert_head(resend_queue, &rn->queue); |
1649 | 873 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
874 rn->code = 0; |
1649 | 875 rn->cnlen = 0; |
876 rn->name = NULL; | |
877 rn->nlen = 0; | |
878 rn->valid = 0; | |
5485
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
879 rn->ttl = NGX_MAX_UINT32_VALUE; |
1649 | 880 rn->waiting = ctx; |
881 | |
882 /* unlock addr mutex */ | |
883 | |
884 ctx->state = NGX_AGAIN; | |
885 | |
886 return NGX_OK; | |
887 | |
888 failed: | |
889 | |
890 if (rn) { | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
891 ngx_rbtree_delete(tree, &rn->node); |
1649 | 892 |
1960
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
893 if (rn->query) { |
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
894 ngx_resolver_free(r, rn->query); |
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
895 } |
1609b3c3d604
fix memory leak on resolver query send failure
Igor Sysoev <igor@sysoev.ru>
parents:
1914
diff
changeset
|
896 |
1649 | 897 ngx_resolver_free(r, rn); |
898 } | |
899 | |
900 /* unlock addr mutex */ | |
901 | |
902 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
|
903 ngx_resolver_free(r, ctx->event); |
1649 | 904 } |
905 | |
1904
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
906 ngx_resolver_free(r, ctx); |
1649 | 907 |
908 return NGX_ERROR; | |
909 } | |
910 | |
911 | |
912 void | |
913 ngx_resolve_addr_done(ngx_resolver_ctx_t *ctx) | |
914 { | |
915 in_addr_t addr; | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
916 ngx_queue_t *expire_queue; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
917 ngx_rbtree_t *tree; |
1649 | 918 ngx_resolver_t *r; |
919 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
|
920 struct sockaddr_in *sin; |
1649 | 921 ngx_resolver_node_t *rn; |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
922 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
923 uint32_t hash; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
924 struct sockaddr_in6 *sin6; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
925 #endif |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
926 |
1649 | 927 r = ctx->resolver; |
928 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
929 switch (ctx->addr.sockaddr->sa_family) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
930 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
931 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
932 case AF_INET6: |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
933 tree = &r->addr6_rbtree; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
934 expire_queue = &r->addr6_expire_queue; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
935 break; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
936 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
937 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
938 default: /* AF_INET */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
939 tree = &r->addr_rbtree; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
940 expire_queue = &r->addr_expire_queue; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
941 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
942 |
1649 | 943 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, |
944 "resolve addr done: %i", ctx->state); | |
945 | |
946 if (ctx->event && ctx->event->timer_set) { | |
947 ngx_del_timer(ctx->event); | |
948 } | |
949 | |
950 /* lock addr mutex */ | |
951 | |
952 if (ctx->state == NGX_AGAIN || ctx->state == NGX_RESOLVE_TIMEDOUT) { | |
953 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
954 switch (ctx->addr.sockaddr->sa_family) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
955 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
956 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
957 case AF_INET6: |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
958 sin6 = (struct sockaddr_in6 *) ctx->addr.sockaddr; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
959 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
|
960 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
|
961 break; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
962 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
963 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
964 default: /* AF_INET */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
965 sin = (struct sockaddr_in *) ctx->addr.sockaddr; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
966 addr = ntohl(sin->sin_addr.s_addr); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
967 rn = ngx_resolver_lookup_addr(r, addr); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
968 } |
1649 | 969 |
970 if (rn) { | |
971 p = &rn->waiting; | |
972 w = rn->waiting; | |
973 | |
974 while (w) { | |
975 if (w == ctx) { | |
976 *p = w->next; | |
977 | |
978 goto done; | |
979 } | |
980 | |
981 p = &w->next; | |
982 w = w->next; | |
983 } | |
984 } | |
985 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
986 { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
987 u_char text[NGX_SOCKADDR_STRLEN]; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
988 ngx_str_t addrtext; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
989 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
990 addrtext.data = text; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
991 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
|
992 text, NGX_SOCKADDR_STRLEN, 0); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
993 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
994 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
|
995 "could not cancel %V resolving", &addrtext); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
996 } |
1649 | 997 } |
998 | |
999 done: | |
1000 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1001 ngx_resolver_expire(r, tree, expire_queue); |
1649 | 1002 |
1003 /* unlock addr mutex */ | |
1004 | |
1904
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1005 /* 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
|
1006 |
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1007 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
|
1008 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
|
1009 } |
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1010 |
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1011 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
|
1012 |
538f06aa8118
fix memory leaks, use unlocked ngx_resolver_free() for seldom failed cases
Igor Sysoev <igor@sysoev.ru>
parents:
1903
diff
changeset
|
1013 /* unlock alloc mutex */ |
1649 | 1014 } |
1015 | |
1016 | |
1017 static void | |
1018 ngx_resolver_expire(ngx_resolver_t *r, ngx_rbtree_t *tree, ngx_queue_t *queue) | |
1019 { | |
1020 time_t now; | |
1021 ngx_uint_t i; | |
1022 ngx_queue_t *q; | |
1023 ngx_resolver_node_t *rn; | |
1024 | |
1025 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver expire"); | |
1026 | |
1027 now = ngx_time(); | |
1028 | |
1029 for (i = 0; i < 2; i++) { | |
1030 if (ngx_queue_empty(queue)) { | |
1031 return; | |
1032 } | |
1033 | |
1034 q = ngx_queue_last(queue); | |
1035 | |
1036 rn = ngx_queue_data(q, ngx_resolver_node_t, queue); | |
1037 | |
1038 if (now <= rn->expire) { | |
1039 return; | |
1040 } | |
1041 | |
1774 | 1042 ngx_log_debug2(NGX_LOG_DEBUG_CORE, r->log, 0, |
1043 "resolver expire \"%*s\"", (size_t) rn->nlen, rn->name); | |
1649 | 1044 |
1045 ngx_queue_remove(q); | |
1046 | |
1047 ngx_rbtree_delete(tree, &rn->node); | |
1048 | |
1049 ngx_resolver_free_node(r, rn); | |
1050 } | |
1051 } | |
1052 | |
1053 | |
1054 static ngx_int_t | |
1055 ngx_resolver_send_query(ngx_resolver_t *r, ngx_resolver_node_t *rn) | |
1056 { | |
1057 ssize_t n; | |
1058 ngx_udp_connection_t *uc; | |
1059 | |
4225
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
1060 uc = r->udp_connections.elts; |
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
1061 |
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
1062 uc = &uc[r->last_connection++]; |
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
1063 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
|
1064 r->last_connection = 0; |
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3902
diff
changeset
|
1065 } |
1649 | 1066 |
1067 if (uc->connection == NULL) { | |
4496
be6c250b827b
Fixed null pointer dereference in resolver (ticket #91).
Maxim Dounin <mdounin@mdounin.ru>
parents:
4474
diff
changeset
|
1068 |
be6c250b827b
Fixed null pointer dereference in resolver (ticket #91).
Maxim Dounin <mdounin@mdounin.ru>
parents:
4474
diff
changeset
|
1069 uc->log = *r->log; |
be6c250b827b
Fixed null pointer dereference in resolver (ticket #91).
Maxim Dounin <mdounin@mdounin.ru>
parents:
4474
diff
changeset
|
1070 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
|
1071 uc->log.data = uc; |
be6c250b827b
Fixed null pointer dereference in resolver (ticket #91).
Maxim Dounin <mdounin@mdounin.ru>
parents:
4474
diff
changeset
|
1072 uc->log.action = "resolving"; |
be6c250b827b
Fixed null pointer dereference in resolver (ticket #91).
Maxim Dounin <mdounin@mdounin.ru>
parents:
4474
diff
changeset
|
1073 |
1649 | 1074 if (ngx_udp_connect(uc) != NGX_OK) { |
1075 return NGX_ERROR; | |
1076 } | |
1077 | |
1078 uc->connection->data = r; | |
1079 uc->connection->read->handler = ngx_resolver_read_response; | |
1906 | 1080 uc->connection->read->resolver = 1; |
1649 | 1081 } |
1082 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1083 if (rn->naddrs == (u_short) -1) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1084 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
|
1085 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1086 if (n == -1) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1087 return NGX_ERROR; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1088 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1089 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1090 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
|
1091 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
|
1092 return NGX_ERROR; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1093 } |
1649 | 1094 } |
1095 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1096 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1097 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
|
1098 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
|
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 } |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1109 #endif |
1649 | 1110 |
1111 return NGX_OK; | |
1112 } | |
1113 | |
1114 | |
1115 static void | |
1116 ngx_resolver_resend_handler(ngx_event_t *ev) | |
1117 { | |
1118 time_t timer, atimer, ntimer; | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1119 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1120 time_t a6timer; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1121 #endif |
1649 | 1122 ngx_resolver_t *r; |
1123 | |
1124 r = ev->data; | |
1125 | |
1126 ngx_log_debug0(NGX_LOG_DEBUG_CORE, r->log, 0, | |
1127 "resolver resend handler"); | |
1128 | |
1129 /* lock name mutex */ | |
1130 | |
1131 ntimer = ngx_resolver_resend(r, &r->name_rbtree, &r->name_resend_queue); | |
1132 | |
1133 /* unlock name mutex */ | |
1134 | |
1135 /* lock addr mutex */ | |
1136 | |
1137 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
|
1138 |
1649 | 1139 /* unlock addr mutex */ |
1140 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1141 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1142 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1143 /* lock addr6 mutex */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1144 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1145 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
|
1146 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1147 /* unlock addr6 mutex */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1148 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1149 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1150 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1151 timer = ntimer; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1152 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1153 if (timer == 0) { |
1649 | 1154 timer = atimer; |
1155 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1156 } else if (atimer) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1157 timer = ngx_min(timer, atimer); |
1649 | 1158 } |
1159 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1160 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1161 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1162 if (timer == 0) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1163 timer = a6timer; |
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 } else if (a6timer) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1166 timer = ngx_min(timer, a6timer); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1167 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1168 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1169 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
1170 |
1649 | 1171 if (timer) { |
1172 ngx_add_timer(r->event, (ngx_msec_t) (timer * 1000)); | |
1173 } | |
1174 } | |
1175 | |
1176 | |
1177 static time_t | |
1178 ngx_resolver_resend(ngx_resolver_t *r, ngx_rbtree_t *tree, ngx_queue_t *queue) | |
1179 { | |
1180 time_t now; | |
1181 ngx_queue_t *q; | |
1182 ngx_resolver_node_t *rn; | |
1183 | |
1184 now = ngx_time(); | |
1185 | |
1186 for ( ;; ) { | |
1187 if (ngx_queue_empty(queue)) { | |
1188 return 0; | |
1189 } | |
1190 | |
1191 q = ngx_queue_last(queue); | |
1192 | |
1193 rn = ngx_queue_data(q, ngx_resolver_node_t, queue); | |
1194 | |
1195 if (now < rn->expire) { | |
1196 return rn->expire - now; | |
1197 } | |
1198 | |
1774 | 1199 ngx_log_debug3(NGX_LOG_DEBUG_CORE, r->log, 0, |
1200 "resolver resend \"%*s\" %p", | |
1201 (size_t) rn->nlen, rn->name, rn->waiting); | |
1649 | 1202 |
1203 ngx_queue_remove(q); | |
1204 | |
1205 if (rn->waiting) { | |
1206 | |
4683
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1207 (void) ngx_resolver_send_query(r, rn); |
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1208 |
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1209 rn->expire = now + r->resend_timeout; |
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1210 |
84d8e60b65f0
Fixed crash in ngx_resolver_cleanup_tree().
Ruslan Ermilov <ru@nginx.com>
parents:
4671
diff
changeset
|
1211 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
|
1212 |
cf4ee321d195
do not delete failed DNS request if there are waiting clients
Igor Sysoev <igor@sysoev.ru>
parents:
1878
diff
changeset
|
1213 continue; |
1649 | 1214 } |
1215 | |
1216 ngx_rbtree_delete(tree, &rn->node); | |
1217 | |
1218 ngx_resolver_free_node(r, rn); | |
1219 } | |
1220 } | |
1221 | |
1222 | |
1223 static void | |
1224 ngx_resolver_read_response(ngx_event_t *rev) | |
1225 { | |
1226 ssize_t n; | |
1227 ngx_connection_t *c; | |
1228 u_char buf[NGX_RESOLVER_UDP_SIZE]; | |
1229 | |
1230 c = rev->data; | |
1231 | |
1232 do { | |
1689 | 1233 n = ngx_udp_recv(c, buf, NGX_RESOLVER_UDP_SIZE); |
1234 | |
1235 if (n < 0) { | |
1649 | 1236 return; |
1237 } | |
1238 | |
1239 ngx_resolver_process_response(c->data, buf, n); | |
1240 | |
1241 } while (rev->ready); | |
1242 } | |
1243 | |
1244 | |
1245 static void | |
1246 ngx_resolver_process_response(ngx_resolver_t *r, u_char *buf, size_t n) | |
1247 { | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1248 char *err; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1249 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
|
1250 qtype, qclass; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1251 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1252 ngx_uint_t qident6; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1253 #endif |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1254 ngx_queue_t *q; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1255 ngx_resolver_qs_t *qs; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1256 ngx_resolver_hdr_t *response; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1257 ngx_resolver_node_t *rn; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1258 |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1259 if (n < sizeof(ngx_resolver_hdr_t)) { |
1649 | 1260 goto short_response; |
1261 } | |
1262 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1263 response = (ngx_resolver_hdr_t *) buf; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1264 |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1265 ident = (response->ident_hi << 8) + response->ident_lo; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1266 flags = (response->flags_hi << 8) + response->flags_lo; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1267 nqs = (response->nqs_hi << 8) + response->nqs_lo; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1268 nan = (response->nan_hi << 8) + response->nan_lo; |
1649 | 1269 |
1270 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
|
1271 "resolver DNS response %ui fl:%04Xui %ui/%ui/%ud/%ud", |
1649 | 1272 ident, flags, nqs, nan, |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1273 (response->nns_hi << 8) + response->nns_lo, |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1274 (response->nar_hi << 8) + response->nar_lo); |
1649 | 1275 |
5470
aebdca7e8f8f
Resolver: fixed response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5469
diff
changeset
|
1276 /* response to a standard query */ |
aebdca7e8f8f
Resolver: fixed response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5469
diff
changeset
|
1277 if ((flags & 0xf870) != 0x8000) { |
1649 | 1278 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
|
1279 "invalid DNS response %ui fl:%04Xui", ident, flags); |
1649 | 1280 return; |
1281 } | |
1282 | |
5470
aebdca7e8f8f
Resolver: fixed response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5469
diff
changeset
|
1283 code = flags & 0xf; |
1649 | 1284 |
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1285 if (code == NGX_RESOLVE_FORMERR) { |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1286 |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1287 times = 0; |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1288 |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1289 for (q = ngx_queue_head(&r->name_resend_queue); |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1290 q != ngx_queue_sentinel(&r->name_resend_queue) || times++ < 100; |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1291 q = ngx_queue_next(q)) |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1292 { |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1293 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
|
1294 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
|
1295 |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1296 if (qident == ident) { |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1297 goto dns_error_name; |
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1298 } |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1299 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1300 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1301 if (rn->query6) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1302 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
|
1303 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1304 if (qident6 == ident) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1305 goto dns_error_name; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1306 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1307 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1308 #endif |
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1309 } |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1310 |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1311 goto dns_error; |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1312 } |
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 if (code > NGX_RESOLVE_REFUSED) { |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1315 goto dns_error; |
1649 | 1316 } |
1317 | |
1318 if (nqs != 1) { | |
1319 err = "invalid number of questions in DNS response"; | |
1320 goto done; | |
1321 } | |
1322 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1323 i = sizeof(ngx_resolver_hdr_t); |
1649 | 1324 |
1325 while (i < (ngx_uint_t) n) { | |
1326 if (buf[i] == '\0') { | |
1327 goto found; | |
1328 } | |
1329 | |
5470
aebdca7e8f8f
Resolver: fixed response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5469
diff
changeset
|
1330 i += 1 + buf[i]; |
1649 | 1331 } |
1332 | |
1333 goto short_response; | |
1334 | |
1335 found: | |
1336 | |
5470
aebdca7e8f8f
Resolver: fixed response processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5469
diff
changeset
|
1337 if (i++ == sizeof(ngx_resolver_hdr_t)) { |
1649 | 1338 err = "zero-length domain name in DNS response"; |
1339 goto done; | |
1340 } | |
1341 | |
1342 if (i + sizeof(ngx_resolver_qs_t) + nan * (2 + sizeof(ngx_resolver_an_t)) | |
1343 > (ngx_uint_t) n) | |
1344 { | |
1345 goto short_response; | |
1346 } | |
1347 | |
1348 qs = (ngx_resolver_qs_t *) &buf[i]; | |
1349 | |
1350 qtype = (qs->type_hi << 8) + qs->type_lo; | |
1351 qclass = (qs->class_hi << 8) + qs->class_lo; | |
1352 | |
1353 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
|
1354 "resolver DNS response qt:%ui cl:%ui", qtype, qclass); |
1649 | 1355 |
1356 if (qclass != 1) { | |
1357 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
|
1358 "unknown query class %ui in DNS response", qclass); |
1649 | 1359 return; |
1360 } | |
1361 | |
1362 switch (qtype) { | |
1363 | |
1364 case NGX_RESOLVE_A: | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1365 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1366 case NGX_RESOLVE_AAAA: |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1367 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1368 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1369 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
|
1370 i + sizeof(ngx_resolver_qs_t)); |
1649 | 1371 |
1372 break; | |
1373 | |
1374 case NGX_RESOLVE_PTR: | |
1375 | |
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
1376 ngx_resolver_process_ptr(r, buf, n, ident, code, nan); |
1649 | 1377 |
1378 break; | |
1379 | |
1380 default: | |
1381 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
|
1382 "unknown query type %ui in DNS response", qtype); |
1649 | 1383 return; |
1384 } | |
1385 | |
1386 return; | |
1387 | |
1388 short_response: | |
1389 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1390 err = "short DNS response"; |
1649 | 1391 |
1392 done: | |
1393 | |
1394 ngx_log_error(r->log_level, r->log, 0, err); | |
1395 | |
1396 return; | |
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1397 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1398 dns_error_name: |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1399 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1400 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
|
1401 "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
|
1402 code, ngx_resolver_strerror(code), ident, |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1403 rn->nlen, rn->name); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1404 return; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1405 |
2282
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1406 dns_error: |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1407 |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1408 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
|
1409 "DNS error (%ui: %s), query id:%ui", |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1410 code, ngx_resolver_strerror(code), ident); |
ec97eb9a8038
show name for a FORMERR DNS response
Igor Sysoev <igor@sysoev.ru>
parents:
2281
diff
changeset
|
1411 return; |
1649 | 1412 } |
1413 | |
1414 | |
1415 static void | |
1416 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
|
1417 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
|
1418 ngx_uint_t nan, ngx_uint_t ans) |
583 | 1419 { |
1649 | 1420 char *err; |
1421 u_char *cname; | |
1422 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
|
1423 int32_t ttl; |
1649 | 1424 uint32_t hash; |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1425 in_addr_t *addr; |
1649 | 1426 ngx_str_t name; |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1427 ngx_addr_t *addrs; |
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1428 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
|
1429 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1430 struct in6_addr *addr6; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1431 #endif |
1649 | 1432 ngx_resolver_an_t *an; |
1433 ngx_resolver_ctx_t *ctx, *next; | |
1434 ngx_resolver_node_t *rn; | |
1435 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1436 if (ngx_resolver_copy(r, &name, buf, |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1437 buf + sizeof(ngx_resolver_hdr_t), buf + last) |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1438 != NGX_OK) |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1439 { |
1649 | 1440 return; |
1441 } | |
1442 | |
1443 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver qs:%V", &name); | |
1444 | |
1445 hash = ngx_crc32_short(name.data, name.len); | |
1446 | |
1447 /* lock name mutex */ | |
1448 | |
1449 rn = ngx_resolver_lookup_name(r, &name, hash); | |
1450 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1451 if (rn == NULL) { |
1649 | 1452 ngx_log_error(r->log_level, r->log, 0, |
1453 "unexpected response for %V", &name); | |
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1454 ngx_resolver_free(r, name.data); |
1649 | 1455 goto failed; |
1456 } | |
1457 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1458 switch (qtype) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1459 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1460 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1461 case NGX_RESOLVE_AAAA: |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1462 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1463 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
|
1464 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
|
1465 "unexpected response for %V", &name); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1466 ngx_resolver_free(r, name.data); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1467 goto failed; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1468 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1469 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1470 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
|
1471 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1472 break; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1473 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1474 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1475 default: /* NGX_RESOLVE_A */ |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1476 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1477 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
|
1478 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
|
1479 "unexpected response for %V", &name); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1480 ngx_resolver_free(r, name.data); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1481 goto failed; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1482 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1483 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1484 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
|
1485 } |
1649 | 1486 |
1487 if (ident != qident) { | |
1488 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
|
1489 "wrong ident %ui response for %V, expect %ui", |
1649 | 1490 ident, &name, qident); |
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1491 ngx_resolver_free(r, name.data); |
1649 | 1492 goto failed; |
1493 } | |
1494 | |
3139 | 1495 ngx_resolver_free(r, name.data); |
1496 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1497 if (code == 0 && rn->code) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1498 code = rn->code; |
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 |
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
1501 if (code == 0 && nan == 0) { |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1502 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1503 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1504 switch (qtype) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1505 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1506 case NGX_RESOLVE_AAAA: |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1507 |
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1508 rn->naddrs6 = 0; |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1509 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1510 if (rn->naddrs == (u_short) -1) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1511 goto next; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1512 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1513 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1514 if (rn->naddrs) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1515 goto export; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1516 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1517 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1518 break; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1519 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1520 default: /* NGX_RESOLVE_A */ |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1521 |
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1522 rn->naddrs = 0; |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1523 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1524 if (rn->naddrs6 == (u_short) -1) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1525 goto next; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1526 } |
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 (rn->naddrs6) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1529 goto export; |
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 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1532 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1533 |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1534 code = NGX_RESOLVE_NXDOMAIN; |
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
1535 } |
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
1536 |
1649 | 1537 if (code) { |
5477
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 (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1540 switch (qtype) { |
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 case NGX_RESOLVE_AAAA: |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1543 |
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1544 rn->naddrs6 = 0; |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1545 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1546 if (rn->naddrs == (u_short) -1) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1547 rn->code = (u_char) code; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1548 goto next; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1549 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1550 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1551 break; |
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 default: /* NGX_RESOLVE_A */ |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1554 |
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1555 rn->naddrs = 0; |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1556 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1557 if (rn->naddrs6 == (u_short) -1) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1558 rn->code = (u_char) code; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1559 goto next; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1560 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1561 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1562 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1563 |
1649 | 1564 next = rn->waiting; |
1565 rn->waiting = NULL; | |
1566 | |
1567 ngx_queue_remove(&rn->queue); | |
1568 | |
1569 ngx_rbtree_delete(&r->name_rbtree, &rn->node); | |
1570 | |
1571 ngx_resolver_free_node(r, rn); | |
1572 | |
1573 /* unlock name mutex */ | |
1574 | |
1575 while (next) { | |
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
1576 ctx = next; |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
1577 ctx->state = code; |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
1578 next = ctx->next; |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
1579 |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
1580 ctx->handler(ctx); |
1649 | 1581 } |
1582 | |
1583 return; | |
1584 } | |
1585 | |
1586 i = ans; | |
1587 naddrs = 0; | |
1588 cname = NULL; | |
1589 | |
1590 for (a = 0; a < nan; a++) { | |
1591 | |
1592 start = i; | |
1593 | |
1594 while (i < last) { | |
1595 | |
1596 if (buf[i] & 0xc0) { | |
1597 i += 2; | |
1598 goto found; | |
1599 } | |
1600 | |
1601 if (buf[i] == 0) { | |
1602 i++; | |
1603 goto test_length; | |
1604 } | |
1605 | |
1606 i += 1 + buf[i]; | |
1607 } | |
1608 | |
1609 goto short_response; | |
1610 | |
1611 test_length: | |
1612 | |
1613 if (i - start < 2) { | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1614 err = "invalid name in DNS response"; |
1649 | 1615 goto invalid; |
1616 } | |
1617 | |
1618 found: | |
1619 | |
1620 if (i + sizeof(ngx_resolver_an_t) >= last) { | |
1621 goto short_response; | |
1622 } | |
1623 | |
1624 an = (ngx_resolver_an_t *) &buf[i]; | |
1625 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1626 type = (an->type_hi << 8) + an->type_lo; |
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1627 class = (an->class_hi << 8) + an->class_lo; |
1649 | 1628 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
|
1629 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
|
1630 + (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
|
1631 |
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1632 if (class != 1) { |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1633 ngx_log_error(r->log_level, r->log, 0, |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1634 "unexpected RR class %ui", class); |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1635 goto failed; |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1636 } |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1637 |
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
1638 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
|
1639 ttl = 0; |
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
1640 } |
1649 | 1641 |
5485
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
1642 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
|
1643 |
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1644 i += sizeof(ngx_resolver_an_t); |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1645 |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1646 switch (type) { |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1647 |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1648 case NGX_RESOLVE_A: |
1649 | 1649 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1650 if (qtype != NGX_RESOLVE_A) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1651 err = "unexpected A record in DNS response"; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1652 goto invalid; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1653 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1654 |
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1655 if (len != 4) { |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1656 err = "invalid A record in DNS response"; |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1657 goto invalid; |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1658 } |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1659 |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1660 if (i + 4 > last) { |
1649 | 1661 goto short_response; |
1662 } | |
1663 | |
1664 naddrs++; | |
1665 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1666 break; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1667 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1668 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1669 case NGX_RESOLVE_AAAA: |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1670 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1671 if (qtype != NGX_RESOLVE_AAAA) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1672 err = "unexpected AAAA record in DNS response"; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1673 goto invalid; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1674 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1675 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1676 if (len != 16) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1677 err = "invalid AAAA record in DNS response"; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1678 goto invalid; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1679 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1680 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1681 if (i + 16 > last) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1682 goto short_response; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1683 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1684 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1685 naddrs++; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1686 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1687 break; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1688 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1689 |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1690 case NGX_RESOLVE_CNAME: |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1691 |
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1692 cname = &buf[i]; |
1965 | 1693 |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1694 break; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1695 |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1696 case NGX_RESOLVE_DNAME: |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1697 |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1698 break; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1699 |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1700 default: |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1701 |
1966 | 1702 ngx_log_error(r->log_level, r->log, 0, |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1703 "unexpected RR type %ui", type); |
1649 | 1704 } |
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1705 |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1706 i += len; |
1649 | 1707 } |
1708 | |
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
1709 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
|
1710 "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
|
1711 naddrs, cname, rn->ttl); |
1649 | 1712 |
1713 if (naddrs) { | |
1714 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1715 switch (qtype) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1716 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1717 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1718 case NGX_RESOLVE_AAAA: |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1719 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1720 if (naddrs == 1) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1721 addr6 = &rn->u6.addr6; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1722 rn->naddrs6 = 1; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1723 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1724 } else { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1725 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
|
1726 if (addr6 == NULL) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1727 goto failed; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1728 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1729 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1730 rn->u6.addrs6 = addr6; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1731 rn->naddrs6 = (u_short) naddrs; |
1649 | 1732 } |
1733 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1734 #if (NGX_SUPPRESS_WARN) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1735 addr = NULL; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1736 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1737 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1738 break; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1739 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1740 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1741 default: /* NGX_RESOLVE_A */ |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1742 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1743 if (naddrs == 1) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1744 addr = &rn->u.addr; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1745 rn->naddrs = 1; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1746 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1747 } else { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1748 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
|
1749 if (addr == NULL) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1750 goto failed; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1751 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1752 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1753 rn->u.addrs = addr; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1754 rn->naddrs = (u_short) naddrs; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1755 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1756 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1757 #if (NGX_HAVE_INET6 && NGX_SUPPRESS_WARN) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1758 addr6 = NULL; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1759 #endif |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1760 } |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1761 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1762 n = 0; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1763 i = ans; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1764 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1765 for (a = 0; a < nan; a++) { |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1766 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1767 for ( ;; ) { |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1768 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1769 if (buf[i] & 0xc0) { |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1770 i += 2; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1771 break; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1772 } |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1773 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1774 if (buf[i] == 0) { |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1775 i++; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1776 break; |
1649 | 1777 } |
1778 | |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1779 i += 1 + buf[i]; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1780 } |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1781 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1782 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
|
1783 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1784 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
|
1785 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
|
1786 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1787 i += sizeof(ngx_resolver_an_t); |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1788 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1789 if (type == NGX_RESOLVE_A) { |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1790 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1791 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
|
1792 + (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
|
1793 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1794 if (++n == naddrs) { |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1795 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1796 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1797 if (rn->naddrs6 == (u_short) -1) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1798 goto next; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1799 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1800 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1801 |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1802 break; |
1649 | 1803 } |
1804 } | |
1805 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1806 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1807 else if (type == NGX_RESOLVE_AAAA) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1808 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1809 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
|
1810 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1811 if (++n == naddrs) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1812 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1813 if (rn->naddrs == (u_short) -1) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1814 goto next; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1815 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1816 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1817 break; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1818 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1819 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1820 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1821 |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1822 i += len; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1823 } |
5477
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 |
5768
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1826 switch (qtype) { |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1827 |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1828 #if (NGX_HAVE_INET6) |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1829 case NGX_RESOLVE_AAAA: |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1830 |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1831 if (rn->naddrs6 == (u_short) -1) { |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1832 rn->naddrs6 = 0; |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1833 } |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1834 |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1835 break; |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1836 #endif |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1837 |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1838 default: /* NGX_RESOLVE_A */ |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1839 |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1840 if (rn->naddrs == (u_short) -1) { |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1841 rn->naddrs = 0; |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1842 } |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1843 } |
70a0408cca7b
Resolver: fixed resend on malformed responses.
Ruslan Ermilov <ru@nginx.com>
parents:
5764
diff
changeset
|
1844 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1845 if (rn->naddrs != (u_short) -1 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1846 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1847 && rn->naddrs6 != (u_short) -1 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1848 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1849 && rn->naddrs |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1850 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1851 + rn->naddrs6 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1852 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1853 > 0) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1854 { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1855 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1856 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1857 export: |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1858 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1859 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1860 naddrs = rn->naddrs; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1861 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1862 naddrs += rn->naddrs6; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1863 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1864 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1865 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
|
1866 addrs = NULL; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1867 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1868 } else { |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1869 addrs = ngx_resolver_export(r, rn, 0); |
1649 | 1870 if (addrs == NULL) { |
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1871 goto failed; |
1649 | 1872 } |
1873 } | |
1874 | |
1875 ngx_queue_remove(&rn->queue); | |
1876 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1877 rn->valid = ngx_time() + (r->valid ? r->valid : (time_t) rn->ttl); |
1649 | 1878 rn->expire = ngx_time() + r->expire; |
1879 | |
1880 ngx_queue_insert_head(&r->name_expire_queue, &rn->queue); | |
1881 | |
1882 next = rn->waiting; | |
1883 rn->waiting = NULL; | |
1884 | |
1885 /* unlock name mutex */ | |
1886 | |
1887 while (next) { | |
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
1888 ctx = next; |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
1889 ctx->state = NGX_OK; |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
1890 ctx->naddrs = naddrs; |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1891 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1892 if (addrs == NULL) { |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1893 ctx->addrs = &ctx->addr; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1894 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
|
1895 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
|
1896 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
|
1897 ctx->sin.sin_family = AF_INET; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1898 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
|
1899 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1900 } else { |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1901 ctx->addrs = addrs; |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1902 } |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1903 |
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
1904 next = ctx->next; |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
1905 |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
1906 ctx->handler(ctx); |
1649 | 1907 } |
1908 | |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1909 if (addrs != NULL) { |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
1910 ngx_resolver_free(r, addrs->sockaddr); |
1649 | 1911 ngx_resolver_free(r, addrs); |
1912 } | |
1913 | |
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
1914 ngx_resolver_free(r, rn->query); |
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
1915 rn->query = NULL; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1916 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1917 rn->query6 = NULL; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1918 #endif |
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
1919 |
1649 | 1920 return; |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1921 } |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1922 |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1923 if (cname) { |
1649 | 1924 |
1925 /* CNAME only */ | |
1926 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1927 if (rn->naddrs == (u_short) -1 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1928 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1929 || rn->naddrs6 == (u_short) -1 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1930 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1931 ) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1932 { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1933 goto next; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1934 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1935 |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1936 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
|
1937 goto failed; |
1649 | 1938 } |
1939 | |
1940 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, | |
1941 "resolver cname:\"%V\"", &name); | |
1942 | |
1741
0829024c924d
fix segfault if response will have CNAME only
Igor Sysoev <igor@sysoev.ru>
parents:
1689
diff
changeset
|
1943 ngx_queue_remove(&rn->queue); |
0829024c924d
fix segfault if response will have CNAME only
Igor Sysoev <igor@sysoev.ru>
parents:
1689
diff
changeset
|
1944 |
1649 | 1945 rn->cnlen = (u_short) name.len; |
1946 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
|
1947 |
5485
8958656a8060
Resolver: use minimum TTL for caching (ticket #329).
Ruslan Ermilov <ru@nginx.com>
parents:
5479
diff
changeset
|
1948 rn->valid = ngx_time() + (r->valid ? r->valid : (time_t) rn->ttl); |
1649 | 1949 rn->expire = ngx_time() + r->expire; |
1950 | |
1951 ngx_queue_insert_head(&r->name_expire_queue, &rn->queue); | |
1952 | |
1953 ctx = rn->waiting; | |
1954 rn->waiting = NULL; | |
1955 | |
1956 if (ctx) { | |
1957 ctx->name = name; | |
1958 | |
1959 (void) ngx_resolve_name_locked(r, ctx); | |
1960 } | |
1961 | |
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
1962 ngx_resolver_free(r, rn->query); |
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
1963 rn->query = NULL; |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1964 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1965 rn->query6 = NULL; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1966 #endif |
4619
3171ec7d0d05
Resolver: protection from duplicate responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4610
diff
changeset
|
1967 |
5471
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1968 /* unlock name mutex */ |
9c96782d9d05
Resolver: fixes in A processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5470
diff
changeset
|
1969 |
1649 | 1970 return; |
1971 } | |
1972 | |
1973 ngx_log_error(r->log_level, r->log, 0, | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1974 "no A or CNAME types in DNS response"); |
1649 | 1975 return; |
1976 | |
1977 short_response: | |
1978 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
1979 err = "short DNS response"; |
1649 | 1980 |
1981 invalid: | |
1982 | |
1983 /* unlock name mutex */ | |
1984 | |
1985 ngx_log_error(r->log_level, r->log, 0, err); | |
1986 | |
1987 return; | |
1988 | |
1989 failed: | |
1990 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1991 next: |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
1992 |
1649 | 1993 /* unlock name mutex */ |
1994 | |
1995 return; | |
1996 } | |
1997 | |
1998 | |
1999 static void | |
2000 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
|
2001 ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan) |
1649 | 2002 { |
2003 char *err; | |
2004 size_t len; | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2005 u_char text[NGX_SOCKADDR_STRLEN]; |
1649 | 2006 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
|
2007 int32_t ttl; |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2008 ngx_int_t octet; |
1649 | 2009 ngx_str_t name; |
5472
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
2010 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
|
2011 ngx_queue_t *expire_queue; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2012 ngx_rbtree_t *tree; |
1649 | 2013 ngx_resolver_an_t *an; |
2014 ngx_resolver_ctx_t *ctx, *next; | |
2015 ngx_resolver_node_t *rn; | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2016 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2017 uint32_t hash; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2018 ngx_int_t digit; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2019 struct in6_addr addr6; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2020 #endif |
1649 | 2021 |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2022 if (ngx_resolver_copy(r, NULL, buf, |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2023 buf + sizeof(ngx_resolver_hdr_t), buf + n) |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2024 != NGX_OK) |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2025 { |
5472
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
2026 return; |
1649 | 2027 } |
2028 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2029 /* AF_INET */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2030 |
1649 | 2031 addr = 0; |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2032 i = sizeof(ngx_resolver_hdr_t); |
1649 | 2033 |
2034 for (mask = 0; mask < 32; mask += 8) { | |
2035 len = buf[i++]; | |
2036 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2037 octet = ngx_atoi(&buf[i], len); |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2038 if (octet == NGX_ERROR || octet > 255) { |
1649 | 2039 goto invalid_in_addr_arpa; |
2040 } | |
2041 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2042 addr += octet << mask; |
1649 | 2043 i += len; |
2044 } | |
2045 | |
5479
c0d6eae5a1c5
Resolver: lookups are case-insensitive.
Ruslan Ermilov <ru@nginx.com>
parents:
5478
diff
changeset
|
2046 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
|
2047 i += sizeof("\7in-addr\4arpa"); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2048 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2049 /* lock addr mutex */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2050 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2051 rn = ngx_resolver_lookup_addr(r, addr); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2052 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2053 tree = &r->addr_rbtree; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2054 expire_queue = &r->addr_expire_queue; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2055 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2056 addr = htonl(addr); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2057 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
|
2058 name.data = text; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2059 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2060 goto valid; |
1649 | 2061 } |
2062 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2063 invalid_in_addr_arpa: |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2064 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2065 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2066 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2067 i = sizeof(ngx_resolver_hdr_t); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2068 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2069 for (octet = 15; octet >= 0; octet--) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2070 if (buf[i++] != '\1') { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2071 goto invalid_ip6_arpa; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2072 } |
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 digit = ngx_hextoi(&buf[i++], 1); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2075 if (digit == NGX_ERROR) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2076 goto invalid_ip6_arpa; |
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 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2079 addr6.s6_addr[octet] = (u_char) digit; |
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 if (buf[i++] != '\1') { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2082 goto invalid_ip6_arpa; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2083 } |
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 digit = ngx_hextoi(&buf[i++], 1); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2086 if (digit == NGX_ERROR) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2087 goto invalid_ip6_arpa; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2088 } |
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 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
|
2091 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2092 |
5479
c0d6eae5a1c5
Resolver: lookups are case-insensitive.
Ruslan Ermilov <ru@nginx.com>
parents:
5478
diff
changeset
|
2093 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
|
2094 i += sizeof("\3ip6\4arpa"); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2095 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2096 /* lock addr mutex */ |
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 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
|
2099 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
|
2100 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2101 tree = &r->addr6_rbtree; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2102 expire_queue = &r->addr6_expire_queue; |
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 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
|
2105 name.data = text; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2106 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2107 goto valid; |
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 invalid_ip6_arpa: |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2111 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2112 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2113 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
|
2114 "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
|
2115 return; |
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 valid: |
1649 | 2118 |
2119 if (rn == NULL || rn->query == NULL) { | |
2120 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
|
2121 "unexpected response for %V", &name); |
1649 | 2122 goto failed; |
2123 } | |
2124 | |
2125 qident = (rn->query[0] << 8) + rn->query[1]; | |
2126 | |
2127 if (ident != qident) { | |
2128 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
|
2129 "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
|
2130 ident, &name, qident); |
1649 | 2131 goto failed; |
2132 } | |
2133 | |
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
2134 if (code == 0 && nan == 0) { |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2135 code = NGX_RESOLVE_NXDOMAIN; |
1742
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
2136 } |
268b81386fe4
no answers in DNS response should be NXDOMAIN
Igor Sysoev <igor@sysoev.ru>
parents:
1741
diff
changeset
|
2137 |
1649 | 2138 if (code) { |
2139 next = rn->waiting; | |
2140 rn->waiting = NULL; | |
2141 | |
2142 ngx_queue_remove(&rn->queue); | |
2143 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2144 ngx_rbtree_delete(tree, &rn->node); |
1649 | 2145 |
2146 ngx_resolver_free_node(r, rn); | |
2147 | |
2148 /* unlock addr mutex */ | |
2149 | |
2150 while (next) { | |
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2151 ctx = next; |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2152 ctx->state = code; |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2153 next = ctx->next; |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2154 |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2155 ctx->handler(ctx); |
1649 | 2156 } |
2157 | |
2158 return; | |
2159 } | |
2160 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2161 i += sizeof(ngx_resolver_qs_t); |
1649 | 2162 |
5472
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
2163 if (i + 2 + sizeof(ngx_resolver_an_t) >= n) { |
1649 | 2164 goto short_response; |
2165 } | |
2166 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2167 /* compression pointer to *.arpa */ |
1649 | 2168 |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2169 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
|
2170 err = "invalid in-addr.arpa or ip6.arpa name in DNS response"; |
1649 | 2171 goto invalid; |
2172 } | |
2173 | |
2174 an = (ngx_resolver_an_t *) &buf[i + 2]; | |
2175 | |
5472
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
2176 class = (an->class_hi << 8) + an->class_lo; |
1649 | 2177 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
|
2178 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
|
2179 + (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
|
2180 |
5472
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
2181 if (class != 1) { |
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
2182 ngx_log_error(r->log_level, r->log, 0, |
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
2183 "unexpected RR class %ui", class); |
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
2184 goto failed; |
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
2185 } |
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
2186 |
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2187 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
|
2188 ttl = 0; |
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2189 } |
1649 | 2190 |
2191 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
|
2192 "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
|
2193 (an->type_hi << 8) + an->type_lo, |
5472
ab493c60d9ff
Resolver: fixes in PTR processing.
Ruslan Ermilov <ru@nginx.com>
parents:
5471
diff
changeset
|
2194 class, len); |
1649 | 2195 |
2196 i += 2 + sizeof(ngx_resolver_an_t); | |
2197 | |
5469
b2fc466a11a7
Resolver: removed unnecessary casts.
Ruslan Ermilov <ru@nginx.com>
parents:
5468
diff
changeset
|
2198 if (i + len > n) { |
1649 | 2199 goto short_response; |
2200 } | |
2201 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2202 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
|
2203 goto failed; |
1649 | 2204 } |
2205 | |
2206 ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver an:%V", &name); | |
2207 | |
2486
8de5dc3e7001
use length of uncompressed name
Igor Sysoev <igor@sysoev.ru>
parents:
2484
diff
changeset
|
2208 if (name.len != (size_t) rn->nlen |
8de5dc3e7001
use length of uncompressed name
Igor Sysoev <igor@sysoev.ru>
parents:
2484
diff
changeset
|
2209 || ngx_strncmp(name.data, rn->name, name.len) != 0) |
1649 | 2210 { |
2482
30ec8c5ac75b
fix reverse resolving cache: it stored zero length names
Igor Sysoev <igor@sysoev.ru>
parents:
2314
diff
changeset
|
2211 if (rn->nlen) { |
30ec8c5ac75b
fix reverse resolving cache: it stored zero length names
Igor Sysoev <igor@sysoev.ru>
parents:
2314
diff
changeset
|
2212 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
|
2213 } |
30ec8c5ac75b
fix reverse resolving cache: it stored zero length names
Igor Sysoev <igor@sysoev.ru>
parents:
2314
diff
changeset
|
2214 |
2490
1c87647b7ca5
fix building by msvc, introduced in r2487
Igor Sysoev <igor@sysoev.ru>
parents:
2487
diff
changeset
|
2215 rn->nlen = (u_short) name.len; |
1649 | 2216 rn->name = name.data; |
2217 | |
2486
8de5dc3e7001
use length of uncompressed name
Igor Sysoev <igor@sysoev.ru>
parents:
2484
diff
changeset
|
2218 name.data = ngx_resolver_dup(r, rn->name, name.len); |
1649 | 2219 if (name.data == NULL) { |
2220 goto failed; | |
2221 } | |
2222 } | |
2223 | |
2224 ngx_queue_remove(&rn->queue); | |
2225 | |
4295
05031fce7ce8
Now nginx uses TTL of a DNS response when calculating cache validity.
Ruslan Ermilov <ru@nginx.com>
parents:
4267
diff
changeset
|
2226 rn->valid = ngx_time() + (r->valid ? r->valid : ttl); |
1649 | 2227 rn->expire = ngx_time() + r->expire; |
2228 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2229 ngx_queue_insert_head(expire_queue, &rn->queue); |
1649 | 2230 |
2231 next = rn->waiting; | |
2232 rn->waiting = NULL; | |
2233 | |
2234 /* unlock addr mutex */ | |
2235 | |
2236 while (next) { | |
5474
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2237 ctx = next; |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2238 ctx->state = NGX_OK; |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2239 ctx->name = name; |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2240 next = ctx->next; |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2241 |
b43b02bb54db
Resolver: fixed indentation.
Ruslan Ermilov <ru@nginx.com>
parents:
5472
diff
changeset
|
2242 ctx->handler(ctx); |
1649 | 2243 } |
2244 | |
2245 ngx_resolver_free(r, name.data); | |
2246 | |
2247 return; | |
2248 | |
2249 short_response: | |
2250 | |
2251 err = "short DNS response"; | |
2252 | |
2253 invalid: | |
2254 | |
2255 /* unlock addr mutex */ | |
2256 | |
2257 ngx_log_error(r->log_level, r->log, 0, err); | |
2258 | |
2259 return; | |
2260 | |
2261 failed: | |
2262 | |
2263 /* unlock addr mutex */ | |
2264 | |
2265 return; | |
2266 } | |
2267 | |
2268 | |
2269 static ngx_resolver_node_t * | |
2270 ngx_resolver_lookup_name(ngx_resolver_t *r, ngx_str_t *name, uint32_t hash) | |
2271 { | |
2272 ngx_int_t rc; | |
2273 ngx_rbtree_node_t *node, *sentinel; | |
2274 ngx_resolver_node_t *rn; | |
2275 | |
2276 node = r->name_rbtree.root; | |
2277 sentinel = r->name_rbtree.sentinel; | |
2278 | |
2279 while (node != sentinel) { | |
2280 | |
2281 if (hash < node->key) { | |
2282 node = node->left; | |
2283 continue; | |
2284 } | |
2285 | |
2286 if (hash > node->key) { | |
2287 node = node->right; | |
2288 continue; | |
2289 } | |
2290 | |
2291 /* hash == node->key */ | |
2292 | |
4497
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
2293 rn = (ngx_resolver_node_t *) node; |
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
2294 |
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
2295 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
|
2296 |
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
2297 if (rc == 0) { |
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
2298 return rn; |
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
2299 } |
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
2300 |
95ab6658654a
Fix of rbtree lookup on hash collisions.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4496
diff
changeset
|
2301 node = (rc < 0) ? node->left : node->right; |
1649 | 2302 } |
2303 | |
2304 /* not found */ | |
2305 | |
2306 return NULL; | |
2307 } | |
2308 | |
2309 | |
2310 static ngx_resolver_node_t * | |
2311 ngx_resolver_lookup_addr(ngx_resolver_t *r, in_addr_t addr) | |
2312 { | |
2313 ngx_rbtree_node_t *node, *sentinel; | |
2314 | |
2315 node = r->addr_rbtree.root; | |
2316 sentinel = r->addr_rbtree.sentinel; | |
2317 | |
2318 while (node != sentinel) { | |
2319 | |
2320 if (addr < node->key) { | |
2321 node = node->left; | |
2322 continue; | |
2323 } | |
2324 | |
2325 if (addr > node->key) { | |
2326 node = node->right; | |
2327 continue; | |
2328 } | |
2329 | |
2330 /* addr == node->key */ | |
2331 | |
2332 return (ngx_resolver_node_t *) node; | |
2333 } | |
2334 | |
2335 /* not found */ | |
2336 | |
2337 return NULL; | |
2338 } | |
2339 | |
2340 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2341 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2342 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2343 static ngx_resolver_node_t * |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2344 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
|
2345 uint32_t hash) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2346 { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2347 ngx_int_t rc; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2348 ngx_rbtree_node_t *node, *sentinel; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2349 ngx_resolver_node_t *rn; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2350 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2351 node = r->addr6_rbtree.root; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2352 sentinel = r->addr6_rbtree.sentinel; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2353 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2354 while (node != sentinel) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2355 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2356 if (hash < node->key) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2357 node = node->left; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2358 continue; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2359 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2360 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2361 if (hash > node->key) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2362 node = node->right; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2363 continue; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2364 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2365 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2366 /* hash == node->key */ |
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 rn = (ngx_resolver_node_t *) node; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2369 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2370 rc = ngx_memcmp(addr, &rn->addr6, 16); |
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 if (rc == 0) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2373 return rn; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2374 } |
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 = (rc < 0) ? node->left : node->right; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2377 } |
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 /* not found */ |
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 return NULL; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2382 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2383 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2384 #endif |
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 |
1649 | 2387 static void |
2388 ngx_resolver_rbtree_insert_value(ngx_rbtree_node_t *temp, | |
2389 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel) | |
2390 { | |
2391 ngx_rbtree_node_t **p; | |
2392 ngx_resolver_node_t *rn, *rn_temp; | |
2393 | |
2394 for ( ;; ) { | |
2395 | |
2396 if (node->key < temp->key) { | |
2397 | |
2398 p = &temp->left; | |
2399 | |
2400 } else if (node->key > temp->key) { | |
2401 | |
2402 p = &temp->right; | |
2403 | |
2404 } else { /* node->key == temp->key */ | |
2405 | |
2406 rn = (ngx_resolver_node_t *) node; | |
2407 rn_temp = (ngx_resolver_node_t *) temp; | |
2408 | |
3143
ab6258e18099
fix resolver cache rbtree comparison
Igor Sysoev <igor@sysoev.ru>
parents:
3139
diff
changeset
|
2409 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
|
2410 < 0) ? &temp->left : &temp->right; |
1649 | 2411 } |
2412 | |
2413 if (*p == sentinel) { | |
2414 break; | |
2415 } | |
2416 | |
2417 temp = *p; | |
2418 } | |
2419 | |
2420 *p = node; | |
2421 node->parent = temp; | |
2422 node->left = sentinel; | |
2423 node->right = sentinel; | |
2424 ngx_rbt_red(node); | |
2425 } | |
2426 | |
2427 | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2428 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2429 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2430 static void |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2431 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
|
2432 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
|
2433 { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2434 ngx_rbtree_node_t **p; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2435 ngx_resolver_node_t *rn, *rn_temp; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2436 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2437 for ( ;; ) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2438 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2439 if (node->key < temp->key) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2440 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2441 p = &temp->left; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2442 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2443 } else if (node->key > temp->key) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2444 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2445 p = &temp->right; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2446 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2447 } else { /* node->key == temp->key */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2448 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2449 rn = (ngx_resolver_node_t *) node; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2450 rn_temp = (ngx_resolver_node_t *) temp; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2451 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2452 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
|
2453 < 0) ? &temp->left : &temp->right; |
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 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2456 if (*p == sentinel) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2457 break; |
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 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2460 temp = *p; |
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 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2463 *p = node; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2464 node->parent = temp; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2465 node->left = sentinel; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2466 node->right = sentinel; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2467 ngx_rbt_red(node); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2468 } |
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 #endif |
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 |
1649 | 2473 static ngx_int_t |
2474 ngx_resolver_create_name_query(ngx_resolver_node_t *rn, ngx_resolver_ctx_t *ctx) | |
2475 { | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2476 u_char *p, *s; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2477 size_t len, nlen; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2478 ngx_uint_t ident; |
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2479 #if (NGX_HAVE_INET6) |
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2480 ngx_resolver_t *r; |
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2481 #endif |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2482 ngx_resolver_qs_t *qs; |
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2483 ngx_resolver_hdr_t *query; |
1649 | 2484 |
3306
61bdaac6c668
fix resolving an empty name (".")
Igor Sysoev <igor@sysoev.ru>
parents:
3299
diff
changeset
|
2485 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
|
2486 |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2487 len = sizeof(ngx_resolver_hdr_t) + nlen + sizeof(ngx_resolver_qs_t); |
1649 | 2488 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2489 #if (NGX_HAVE_INET6) |
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2490 r = ctx->resolver; |
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2491 |
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2492 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
|
2493 #else |
3307
34e99a97fbd6
use ngx_resolver_alloc() instead of ngx_resolver_calloc()
Igor Sysoev <igor@sysoev.ru>
parents:
3306
diff
changeset
|
2494 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
|
2495 #endif |
1649 | 2496 if (p == NULL) { |
2497 return NGX_ERROR; | |
2498 } | |
2499 | |
2500 rn->qlen = (u_short) len; | |
2501 rn->query = p; | |
2502 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2503 #if (NGX_HAVE_INET6) |
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2504 if (r->ipv6) { |
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2505 rn->query6 = p + len; |
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2506 } |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2507 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2508 |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2509 query = (ngx_resolver_hdr_t *) p; |
1649 | 2510 |
2511 ident = ngx_random(); | |
2512 | |
2513 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
|
2514 "resolve: \"%V\" A %i", &ctx->name, ident & 0xffff); |
1649 | 2515 |
2516 query->ident_hi = (u_char) ((ident >> 8) & 0xff); | |
2517 query->ident_lo = (u_char) (ident & 0xff); | |
2518 | |
2519 /* recursion query */ | |
2520 query->flags_hi = 1; query->flags_lo = 0; | |
2521 | |
2522 /* one question */ | |
2523 query->nqs_hi = 0; query->nqs_lo = 1; | |
2524 query->nan_hi = 0; query->nan_lo = 0; | |
2525 query->nns_hi = 0; query->nns_lo = 0; | |
2526 query->nar_hi = 0; query->nar_lo = 0; | |
2527 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2528 p += sizeof(ngx_resolver_hdr_t) + nlen; |
1649 | 2529 |
2530 qs = (ngx_resolver_qs_t *) p; | |
2531 | |
2532 /* query type */ | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2533 qs->type_hi = 0; qs->type_lo = NGX_RESOLVE_A; |
1649 | 2534 |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2535 /* IN query class */ |
1649 | 2536 qs->class_hi = 0; qs->class_lo = 1; |
2537 | |
2538 /* convert "www.example.com" to "\3www\7example\3com\0" */ | |
2539 | |
2540 len = 0; | |
2541 p--; | |
2542 *p-- = '\0'; | |
2543 | |
4610
778d2cc03e22
Fixed segmentation fault in ngx_resolver_create_name_query().
Ruslan Ermilov <ru@nginx.com>
parents:
4556
diff
changeset
|
2544 if (ctx->name.len == 0) { |
778d2cc03e22
Fixed segmentation fault in ngx_resolver_create_name_query().
Ruslan Ermilov <ru@nginx.com>
parents:
4556
diff
changeset
|
2545 return NGX_DECLINED; |
778d2cc03e22
Fixed segmentation fault in ngx_resolver_create_name_query().
Ruslan Ermilov <ru@nginx.com>
parents:
4556
diff
changeset
|
2546 } |
778d2cc03e22
Fixed segmentation fault in ngx_resolver_create_name_query().
Ruslan Ermilov <ru@nginx.com>
parents:
4556
diff
changeset
|
2547 |
1649 | 2548 for (s = ctx->name.data + ctx->name.len - 1; s >= ctx->name.data; s--) { |
2549 if (*s != '.') { | |
2550 *p = *s; | |
2551 len++; | |
2552 | |
2553 } else { | |
4556
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
2554 if (len == 0 || len > 255) { |
1961
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
2555 return NGX_DECLINED; |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
2556 } |
99b9feacccb4
return NXDOMAIN for ".." in host name
Igor Sysoev <igor@sysoev.ru>
parents:
1960
diff
changeset
|
2557 |
1649 | 2558 *p = (u_char) len; |
2559 len = 0; | |
2560 } | |
2561 | |
2562 p--; | |
2563 } | |
2564 | |
4556
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
2565 if (len == 0 || len > 255) { |
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
2566 return NGX_DECLINED; |
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
2567 } |
1bddc91e78d6
Resolver: added missing sanity checking when creating name queries.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4497
diff
changeset
|
2568 |
1649 | 2569 *p = (u_char) len; |
2570 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2571 #if (NGX_HAVE_INET6) |
5478
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2572 if (!r->ipv6) { |
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2573 return NGX_OK; |
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2574 } |
3cb3175a6fef
The "ipv6=" boolean parameter of the "resolver" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
5477
diff
changeset
|
2575 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2576 p = rn->query6; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2577 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2578 ngx_memcpy(p, rn->query, rn->qlen); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2579 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2580 query = (ngx_resolver_hdr_t *) p; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2581 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2582 ident = ngx_random(); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2583 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2584 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
|
2585 "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
|
2586 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2587 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
|
2588 query->ident_lo = (u_char) (ident & 0xff); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2589 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2590 p += sizeof(ngx_resolver_hdr_t) + nlen; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2591 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2592 qs = (ngx_resolver_qs_t *) p; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2593 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2594 qs->type_lo = NGX_RESOLVE_AAAA; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2595 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2596 |
1649 | 2597 return NGX_OK; |
2598 } | |
2599 | |
2600 | |
2601 static ngx_int_t | |
2602 ngx_resolver_create_addr_query(ngx_resolver_node_t *rn, ngx_resolver_ctx_t *ctx) | |
2603 { | |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2604 u_char *p, *d; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2605 size_t len; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2606 in_addr_t addr; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2607 ngx_int_t n; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2608 ngx_uint_t ident; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2609 ngx_resolver_hdr_t *query; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2610 struct sockaddr_in *sin; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2611 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2612 struct sockaddr_in6 *sin6; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2613 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2614 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2615 switch (ctx->addr.sockaddr->sa_family) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2616 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2617 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2618 case AF_INET6: |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2619 len = sizeof(ngx_resolver_hdr_t) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2620 + 64 + sizeof(".ip6.arpa.") - 1 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2621 + sizeof(ngx_resolver_qs_t); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2622 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2623 break; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2624 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2625 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2626 default: /* AF_INET */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2627 len = sizeof(ngx_resolver_hdr_t) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2628 + 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
|
2629 + sizeof(ngx_resolver_qs_t); |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2630 } |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2631 |
3307
34e99a97fbd6
use ngx_resolver_alloc() instead of ngx_resolver_calloc()
Igor Sysoev <igor@sysoev.ru>
parents:
3306
diff
changeset
|
2632 p = ngx_resolver_alloc(ctx->resolver, len); |
1649 | 2633 if (p == NULL) { |
2634 return NGX_ERROR; | |
2635 } | |
2636 | |
2637 rn->query = p; | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2638 query = (ngx_resolver_hdr_t *) p; |
1649 | 2639 |
2640 ident = ngx_random(); | |
2641 | |
2642 query->ident_hi = (u_char) ((ident >> 8) & 0xff); | |
2643 query->ident_lo = (u_char) (ident & 0xff); | |
2644 | |
2645 /* recursion query */ | |
2646 query->flags_hi = 1; query->flags_lo = 0; | |
2647 | |
2648 /* one question */ | |
2649 query->nqs_hi = 0; query->nqs_lo = 1; | |
2650 query->nan_hi = 0; query->nan_lo = 0; | |
2651 query->nns_hi = 0; query->nns_lo = 0; | |
2652 query->nar_hi = 0; query->nar_lo = 0; | |
2653 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2654 p += sizeof(ngx_resolver_hdr_t); |
1649 | 2655 |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2656 switch (ctx->addr.sockaddr->sa_family) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2657 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2658 #if (NGX_HAVE_INET6) |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2659 case AF_INET6: |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2660 sin6 = (struct sockaddr_in6 *) ctx->addr.sockaddr; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2661 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2662 for (n = 15; n >= 0; n--) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2663 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
|
2664 sin6->sin6_addr.s6_addr[n] & 0xf, |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2665 (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
|
2666 } |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2667 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2668 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
|
2669 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2670 break; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2671 #endif |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2672 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2673 default: /* AF_INET */ |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2674 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2675 sin = (struct sockaddr_in *) ctx->addr.sockaddr; |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2676 addr = ntohl(sin->sin_addr.s_addr); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2677 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2678 for (n = 0; n < 32; n += 8) { |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2679 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
|
2680 *p = (u_char) (d - &p[1]); |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2681 p = d; |
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 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2684 p = ngx_cpymem(p, "\7in-addr\4arpa\0", 14); |
1649 | 2685 } |
2686 | |
5468
5c410d6ca7dd
Resolver: improved code readability.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
2687 /* query type "PTR", IN query class */ |
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2688 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
|
2689 |
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
2690 rn->qlen = (u_short) (p - rn->query); |
1649 | 2691 |
2692 return NGX_OK; | |
2693 } | |
2694 | |
2695 | |
2696 static ngx_int_t | |
2697 ngx_resolver_copy(ngx_resolver_t *r, ngx_str_t *name, u_char *buf, u_char *src, | |
2698 u_char *last) | |
2699 { | |
2700 char *err; | |
2701 u_char *p, *dst; | |
2702 ssize_t len; | |
2703 ngx_uint_t i, n; | |
2704 | |
2705 p = src; | |
2706 len = -1; | |
2707 | |
2708 /* | |
2709 * compression pointers allow to create endless loop, so we set limit; | |
2710 * 128 pointers should be enough to store 255-byte name | |
2711 */ | |
2712 | |
2713 for (i = 0; i < 128; i++) { | |
2714 n = *p++; | |
2715 | |
2716 if (n == 0) { | |
2717 goto done; | |
2718 } | |
2719 | |
2720 if (n & 0xc0) { | |
2314
52987a023486
fix compression pointer for big (>255) DNS responses
Igor Sysoev <igor@sysoev.ru>
parents:
2282
diff
changeset
|
2721 n = ((n & 0x3f) << 8) + *p; |
1649 | 2722 p = &buf[n]; |
2723 | |
2724 } else { | |
2725 len += 1 + n; | |
2726 p = &p[n]; | |
2727 } | |
2728 | |
2729 if (p >= last) { | |
2730 err = "name is out of response"; | |
2731 goto invalid; | |
2732 } | |
2733 } | |
2734 | |
2735 err = "compression pointers loop"; | |
2736 | |
2737 invalid: | |
2738 | |
2739 ngx_log_error(r->log_level, r->log, 0, err); | |
2740 | |
2741 return NGX_ERROR; | |
2742 | |
2743 done: | |
2744 | |
2745 if (name == NULL) { | |
583 | 2746 return NGX_OK; |
2747 } | |
2748 | |
3298
847ab5a32307
fix "PTR ." case in address resolver
Igor Sysoev <igor@sysoev.ru>
parents:
3297
diff
changeset
|
2749 if (len == -1) { |
5764
f166c521b619
Style: use ngx_str_null().
Tatsuhiko Kubo <cubicdaiya@gmail.com>
parents:
5600
diff
changeset
|
2750 ngx_str_null(name); |
3298
847ab5a32307
fix "PTR ." case in address resolver
Igor Sysoev <igor@sysoev.ru>
parents:
3297
diff
changeset
|
2751 return NGX_OK; |
847ab5a32307
fix "PTR ." case in address resolver
Igor Sysoev <igor@sysoev.ru>
parents:
3297
diff
changeset
|
2752 } |
847ab5a32307
fix "PTR ." case in address resolver
Igor Sysoev <igor@sysoev.ru>
parents:
3297
diff
changeset
|
2753 |
1649 | 2754 dst = ngx_resolver_alloc(r, len); |
2755 if (dst == NULL) { | |
2756 return NGX_ERROR; | |
2757 } | |
2758 | |
2759 name->data = dst; | |
2760 | |
2761 n = *src++; | |
2762 | |
2763 for ( ;; ) { | |
4267
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
2764 if (n & 0xc0) { |
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
2765 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
|
2766 src = &buf[n]; |
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
2767 |
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
2768 n = *src++; |
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
2769 |
768212ca0745
Fixed compression pointer processing in DNS response greater than 255 bytes.
Igor Sysoev <igor@sysoev.ru>
parents:
4225
diff
changeset
|
2770 } else { |
5479
c0d6eae5a1c5
Resolver: lookups are case-insensitive.
Ruslan Ermilov <ru@nginx.com>
parents:
5478
diff
changeset
|
2771 ngx_strlow(dst, src, n); |
1649 | 2772 dst += n; |
2773 src += n; | |
2774 | |
2775 n = *src++; | |
2776 | |
2777 if (n != 0) { | |
2778 *dst++ = '.'; | |
2779 } | |
2780 } | |
2781 | |
2782 if (n == 0) { | |
2783 name->len = dst - name->data; | |
2784 return NGX_OK; | |
2785 } | |
2786 } | |
2787 } | |
2788 | |
2789 | |
2790 static void | |
2791 ngx_resolver_timeout_handler(ngx_event_t *ev) | |
2792 { | |
2793 ngx_resolver_ctx_t *ctx; | |
2794 | |
2795 ctx = ev->data; | |
2796 | |
2797 ctx->state = NGX_RESOLVE_TIMEDOUT; | |
2798 | |
2799 ctx->handler(ctx); | |
2800 } | |
2801 | |
2802 | |
2803 static void | |
2804 ngx_resolver_free_node(ngx_resolver_t *r, ngx_resolver_node_t *rn) | |
2805 { | |
2806 /* lock alloc mutex */ | |
2807 | |
2808 if (rn->query) { | |
2809 ngx_resolver_free_locked(r, rn->query); | |
2810 } | |
2811 | |
2812 if (rn->name) { | |
2813 ngx_resolver_free_locked(r, rn->name); | |
2814 } | |
2815 | |
2816 if (rn->cnlen) { | |
2817 ngx_resolver_free_locked(r, rn->u.cname); | |
2818 } | |
2819 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2820 if (rn->naddrs > 1 && rn->naddrs != (u_short) -1) { |
1649 | 2821 ngx_resolver_free_locked(r, rn->u.addrs); |
2822 } | |
2823 | |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2824 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2825 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
|
2826 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
|
2827 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2828 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2829 |
1649 | 2830 ngx_resolver_free_locked(r, rn); |
2831 | |
2832 /* unlock alloc mutex */ | |
2833 } | |
2834 | |
2835 | |
2836 static void * | |
2837 ngx_resolver_alloc(ngx_resolver_t *r, size_t size) | |
2838 { | |
2839 u_char *p; | |
2840 | |
2841 /* lock alloc mutex */ | |
2842 | |
2843 p = ngx_alloc(size, r->log); | |
2844 | |
2845 /* unlock alloc mutex */ | |
2846 | |
2847 return p; | |
2848 } | |
2849 | |
2850 | |
1903 | 2851 static void * |
1649 | 2852 ngx_resolver_calloc(ngx_resolver_t *r, size_t size) |
2853 { | |
2854 u_char *p; | |
2855 | |
2856 p = ngx_resolver_alloc(r, size); | |
2857 | |
2858 if (p) { | |
2859 ngx_memzero(p, size); | |
2860 } | |
2861 | |
2862 return p; | |
2863 } | |
2864 | |
2865 | |
2866 static void | |
2867 ngx_resolver_free(ngx_resolver_t *r, void *p) | |
2868 { | |
2869 /* lock alloc mutex */ | |
2870 | |
2871 ngx_free(p); | |
2872 | |
2873 /* unlock alloc mutex */ | |
2874 } | |
2875 | |
2876 | |
2877 static void | |
2878 ngx_resolver_free_locked(ngx_resolver_t *r, void *p) | |
2879 { | |
2880 ngx_free(p); | |
2881 } | |
2882 | |
2883 | |
2884 static void * | |
2885 ngx_resolver_dup(ngx_resolver_t *r, void *src, size_t size) | |
2886 { | |
2887 void *dst; | |
2888 | |
2889 dst = ngx_resolver_alloc(r, size); | |
2890 | |
2891 if (dst == NULL) { | |
2892 return dst; | |
2893 } | |
2894 | |
2895 ngx_memcpy(dst, src, size); | |
2896 | |
2897 return dst; | |
2898 } | |
2899 | |
2900 | |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2901 static ngx_addr_t * |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2902 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
|
2903 ngx_uint_t rotate) |
4871
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
2904 { |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2905 ngx_addr_t *dst; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2906 ngx_uint_t d, i, j, n; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2907 u_char (*sockaddr)[NGX_SOCKADDRLEN]; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2908 in_addr_t *addr; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2909 struct sockaddr_in *sin; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2910 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2911 struct in6_addr *addr6; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2912 struct sockaddr_in6 *sin6; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2913 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2914 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2915 n = rn->naddrs; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2916 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2917 n += rn->naddrs6; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2918 #endif |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2919 |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2920 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
|
2921 if (dst == NULL) { |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2922 return NULL; |
4892
063ac68d89dc
Resolver: added missing memory allocation error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4871
diff
changeset
|
2923 } |
063ac68d89dc
Resolver: added missing memory allocation error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4871
diff
changeset
|
2924 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2925 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
|
2926 if (sockaddr == NULL) { |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2927 ngx_resolver_free(r, dst); |
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2928 return NULL; |
4871
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
2929 } |
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
2930 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2931 i = 0; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2932 d = rotate ? ngx_random() % n : 0; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2933 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2934 if (rn->naddrs) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2935 j = rotate ? ngx_random() % rn->naddrs : 0; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2936 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2937 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
|
2938 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2939 do { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2940 sin = (struct sockaddr_in *) sockaddr[d]; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2941 sin->sin_family = AF_INET; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2942 sin->sin_addr.s_addr = addr[j++]; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2943 dst[d].sockaddr = (struct sockaddr *) sin; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2944 dst[d++].socklen = sizeof(struct sockaddr_in); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2945 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2946 if (d == n) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2947 d = 0; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2948 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2949 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2950 if (j == rn->naddrs) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2951 j = 0; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2952 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2953 } while (++i < rn->naddrs); |
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
5474
diff
changeset
|
2954 } |
4871
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
2955 |
5477
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2956 #if (NGX_HAVE_INET6) |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2957 if (rn->naddrs6) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2958 j = rotate ? ngx_random() % rn->naddrs6 : 0; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2959 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2960 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
|
2961 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2962 do { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2963 sin6 = (struct sockaddr_in6 *) sockaddr[d]; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2964 sin6->sin6_family = AF_INET6; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2965 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
|
2966 dst[d].sockaddr = (struct sockaddr *) sin6; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2967 dst[d++].socklen = sizeof(struct sockaddr_in6); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2968 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2969 if (d == n) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2970 d = 0; |
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 |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2973 if (j == rn->naddrs6) { |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2974 j = 0; |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2975 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2976 } while (++i < n); |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2977 } |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2978 #endif |
98876ce2a7fd
Resolver: implemented IPv6 name to address resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5476
diff
changeset
|
2979 |
4871
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
2980 return dst; |
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
2981 } |
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
2982 |
c85cefbdaafe
Resolver: cached addresses are returned with random rotation now.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4784
diff
changeset
|
2983 |
1649 | 2984 char * |
2985 ngx_resolver_strerror(ngx_int_t err) | |
2986 { | |
2987 static char *errors[] = { | |
2988 "Format error", /* FORMERR */ | |
2989 "Server failure", /* SERVFAIL */ | |
2990 "Host not found", /* NXDOMAIN */ | |
2991 "Unimplemented", /* NOTIMP */ | |
2992 "Operation refused" /* REFUSED */ | |
2993 }; | |
2994 | |
2995 if (err > 0 && err < 6) { | |
2996 return errors[err - 1]; | |
2997 } | |
2998 | |
2999 if (err == NGX_RESOLVE_TIMEDOUT) { | |
3000 return "Operation timed out"; | |
3001 } | |
3002 | |
3003 return "Unknown error"; | |
3004 } | |
3005 | |
3006 | |
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3007 static u_char * |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3008 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
|
3009 { |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3010 u_char *p; |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3011 ngx_udp_connection_t *uc; |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3012 |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3013 p = buf; |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3014 |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3015 if (log->action) { |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3016 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
|
3017 len -= p - buf; |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3018 } |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3019 |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3020 uc = log->data; |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3021 |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3022 if (uc) { |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3023 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
|
3024 } |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3025 |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3026 return p; |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3027 } |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3028 |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3029 |
1649 | 3030 ngx_int_t |
3031 ngx_udp_connect(ngx_udp_connection_t *uc) | |
3032 { | |
3033 int rc; | |
3034 ngx_int_t event; | |
3035 ngx_event_t *rev, *wev; | |
3036 ngx_socket_t s; | |
3037 ngx_connection_t *c; | |
3038 | |
4671
af9342747669
Support for IPv6 literals and an optional port in resolver.
Ruslan Ermilov <ru@nginx.com>
parents:
4653
diff
changeset
|
3039 s = ngx_socket(uc->sockaddr->sa_family, SOCK_DGRAM, 0); |
583 | 3040 |
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3041 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, &uc->log, 0, "UDP socket %d", s); |
583 | 3042 |
5360
3d2d3e1cf427
Win32: MinGW GCC compatibility.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4892
diff
changeset
|
3043 if (s == (ngx_socket_t) -1) { |
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3044 ngx_log_error(NGX_LOG_ALERT, &uc->log, ngx_socket_errno, |
583 | 3045 ngx_socket_n " failed"); |
3046 return NGX_ERROR; | |
3047 } | |
3048 | |
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3049 c = ngx_get_connection(s, &uc->log); |
583 | 3050 |
3051 if (c == NULL) { | |
3052 if (ngx_close_socket(s) == -1) { | |
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3053 ngx_log_error(NGX_LOG_ALERT, &uc->log, ngx_socket_errno, |
583 | 3054 ngx_close_socket_n "failed"); |
3055 } | |
3056 | |
3057 return NGX_ERROR; | |
3058 } | |
3059 | |
1649 | 3060 if (ngx_nonblocking(s) == -1) { |
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3061 ngx_log_error(NGX_LOG_ALERT, &uc->log, ngx_socket_errno, |
1649 | 3062 ngx_nonblocking_n " failed"); |
3063 | |
5582
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
3064 goto failed; |
1649 | 3065 } |
3066 | |
583 | 3067 rev = c->read; |
3068 wev = c->write; | |
3069 | |
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3070 rev->log = &uc->log; |
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3071 wev->log = &uc->log; |
1649 | 3072 |
3073 uc->connection = c; | |
583 | 3074 |
3075 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1); | |
3076 | |
3077 #if (NGX_THREADS) | |
1649 | 3078 |
3079 /* TODO: lock event when call completion handler */ | |
3080 | |
3081 rev->lock = &c->lock; | |
3082 wev->lock = &c->lock; | |
583 | 3083 rev->own_lock = &c->lock; |
3084 wev->own_lock = &c->lock; | |
1649 | 3085 |
583 | 3086 #endif |
3087 | |
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3088 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
|
3089 "connect to %V, fd:%d #%uA", &uc->server, s, c->number); |
1649 | 3090 |
3091 rc = connect(s, uc->sockaddr, uc->socklen); | |
3092 | |
3093 /* TODO: aio, iocp */ | |
583 | 3094 |
3095 if (rc == -1) { | |
3408
71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3376
diff
changeset
|
3096 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
|
3097 "connect() failed"); |
583 | 3098 |
5582
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
3099 goto failed; |
583 | 3100 } |
3101 | |
1649 | 3102 /* UDP sockets are always ready to write */ |
3103 wev->ready = 1; | |
3104 | |
3105 if (ngx_add_event) { | |
3106 | |
3107 event = (ngx_event_flags & NGX_USE_CLEAR_EVENT) ? | |
3108 /* kqueue, epoll */ NGX_CLEAR_EVENT: | |
3109 /* select, poll, /dev/poll */ NGX_LEVEL_EVENT; | |
3110 /* eventport event type has no meaning: oneshot only */ | |
3111 | |
3112 if (ngx_add_event(rev, NGX_READ_EVENT, event) != NGX_OK) { | |
5582
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
3113 goto failed; |
1649 | 3114 } |
3115 | |
3116 } else { | |
3117 /* rtsig */ | |
3118 | |
583 | 3119 if (ngx_add_conn(c) == NGX_ERROR) { |
5582
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
3120 goto failed; |
583 | 3121 } |
3122 } | |
3123 | |
3124 return NGX_OK; | |
5582
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
3125 |
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
3126 failed: |
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
3127 |
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
3128 ngx_close_connection(c); |
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
3129 uc->connection = NULL; |
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
3130 |
545a4d393e2f
Resolver: properly handle connect() failures.
Ruslan Ermilov <ru@nginx.com>
parents:
5505
diff
changeset
|
3131 return NGX_ERROR; |
583 | 3132 } |