Mercurial > hg > nginx
annotate src/mail/ngx_mail_core_module.c @ 1918:a47516c7065b
check duplicate resolver
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Thu, 06 Mar 2008 08:48:25 +0000 |
parents | c0f873458e2b |
children | b56d4b1ebac7 |
rev | line source |
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521 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4 */ | |
5 | |
6 | |
7 #include <ngx_config.h> | |
8 #include <ngx_core.h> | |
9 #include <ngx_event.h> | |
1136 | 10 #include <ngx_mail.h> |
521 | 11 |
12 | |
1136 | 13 static void *ngx_mail_core_create_main_conf(ngx_conf_t *cf); |
14 static void *ngx_mail_core_create_srv_conf(ngx_conf_t *cf); | |
15 static char *ngx_mail_core_merge_srv_conf(ngx_conf_t *cf, void *parent, | |
521 | 16 void *child); |
1136 | 17 static char *ngx_mail_core_server(ngx_conf_t *cf, ngx_command_t *cmd, |
521 | 18 void *conf); |
1136 | 19 static char *ngx_mail_core_listen(ngx_conf_t *cf, ngx_command_t *cmd, |
521 | 20 void *conf); |
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21 static char *ngx_mail_core_protocol(ngx_conf_t *cf, ngx_command_t *cmd, |
527 | 22 void *conf); |
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23 static char *ngx_mail_core_resolver(ngx_conf_t *cf, ngx_command_t *cmd, |
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24 void *conf); |
521 | 25 |
26 | |
1136 | 27 static ngx_command_t ngx_mail_core_commands[] = { |
521 | 28 |
29 { ngx_string("server"), | |
1136 | 30 NGX_MAIL_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS, |
31 ngx_mail_core_server, | |
521 | 32 0, |
33 0, | |
34 NULL }, | |
35 | |
36 { ngx_string("listen"), | |
1136 | 37 NGX_MAIL_SRV_CONF|NGX_CONF_TAKE12, |
38 ngx_mail_core_listen, | |
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39 NGX_MAIL_SRV_CONF_OFFSET, |
521 | 40 0, |
41 NULL }, | |
42 | |
43 { ngx_string("protocol"), | |
1136 | 44 NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1, |
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45 ngx_mail_core_protocol, |
1136 | 46 NGX_MAIL_SRV_CONF_OFFSET, |
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47 0, |
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48 NULL }, |
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49 |
587 | 50 { ngx_string("so_keepalive"), |
1136 | 51 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_FLAG, |
587 | 52 ngx_conf_set_flag_slot, |
1136 | 53 NGX_MAIL_SRV_CONF_OFFSET, |
54 offsetof(ngx_mail_core_srv_conf_t, so_keepalive), | |
587 | 55 NULL }, |
56 | |
521 | 57 { ngx_string("timeout"), |
1136 | 58 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1, |
521 | 59 ngx_conf_set_msec_slot, |
1136 | 60 NGX_MAIL_SRV_CONF_OFFSET, |
61 offsetof(ngx_mail_core_srv_conf_t, timeout), | |
521 | 62 NULL }, |
63 | |
800 | 64 { ngx_string("server_name"), |
1136 | 65 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1, |
800 | 66 ngx_conf_set_str_slot, |
1136 | 67 NGX_MAIL_SRV_CONF_OFFSET, |
68 offsetof(ngx_mail_core_srv_conf_t, server_name), | |
800 | 69 NULL }, |
70 | |
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71 { ngx_string("resolver"), |
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72 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1, |
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73 ngx_mail_core_resolver, |
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74 NGX_MAIL_SRV_CONF_OFFSET, |
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75 0, |
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76 NULL }, |
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77 |
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78 { ngx_string("resolver_timeout"), |
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79 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1, |
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80 ngx_conf_set_msec_slot, |
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81 NGX_MAIL_SRV_CONF_OFFSET, |
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82 offsetof(ngx_mail_core_srv_conf_t, resolver_timeout), |
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83 NULL }, |
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84 |
521 | 85 ngx_null_command |
86 }; | |
87 | |
88 | |
1136 | 89 static ngx_mail_module_t ngx_mail_core_module_ctx = { |
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90 NULL, /* protocol */ |
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91 |
1136 | 92 ngx_mail_core_create_main_conf, /* create main configuration */ |
521 | 93 NULL, /* init main configuration */ |
94 | |
1136 | 95 ngx_mail_core_create_srv_conf, /* create server configuration */ |
96 ngx_mail_core_merge_srv_conf /* merge server configuration */ | |
521 | 97 }; |
98 | |
99 | |
1136 | 100 ngx_module_t ngx_mail_core_module = { |
521 | 101 NGX_MODULE_V1, |
1136 | 102 &ngx_mail_core_module_ctx, /* module context */ |
103 ngx_mail_core_commands, /* module directives */ | |
104 NGX_MAIL_MODULE, /* module type */ | |
541 | 105 NULL, /* init master */ |
521 | 106 NULL, /* init module */ |
541 | 107 NULL, /* init process */ |
108 NULL, /* init thread */ | |
109 NULL, /* exit thread */ | |
110 NULL, /* exit process */ | |
111 NULL, /* exit master */ | |
112 NGX_MODULE_V1_PADDING | |
521 | 113 }; |
114 | |
115 | |
116 static void * | |
1136 | 117 ngx_mail_core_create_main_conf(ngx_conf_t *cf) |
577 | 118 { |
1136 | 119 ngx_mail_core_main_conf_t *cmcf; |
521 | 120 |
1136 | 121 cmcf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_core_main_conf_t)); |
521 | 122 if (cmcf == NULL) { |
123 return NGX_CONF_ERROR; | |
124 } | |
125 | |
126 if (ngx_array_init(&cmcf->servers, cf->pool, 4, | |
1136 | 127 sizeof(ngx_mail_core_srv_conf_t *)) |
641 | 128 != NGX_OK) |
129 { | |
130 return NGX_CONF_ERROR; | |
131 } | |
132 | |
1136 | 133 if (ngx_array_init(&cmcf->listen, cf->pool, 4, sizeof(ngx_mail_listen_t)) |
641 | 134 != NGX_OK) |
521 | 135 { |
136 return NGX_CONF_ERROR; | |
137 } | |
138 | |
139 return cmcf; | |
140 } | |
141 | |
142 | |
143 static void * | |
1136 | 144 ngx_mail_core_create_srv_conf(ngx_conf_t *cf) |
577 | 145 { |
1136 | 146 ngx_mail_core_srv_conf_t *cscf; |
577 | 147 |
1136 | 148 cscf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_core_srv_conf_t)); |
521 | 149 if (cscf == NULL) { |
527 | 150 return NULL; |
521 | 151 } |
152 | |
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153 /* |
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154 * set by ngx_pcalloc(): |
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155 * |
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156 * cscf->protocol = NULL; |
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157 */ |
521 | 158 |
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159 cscf->timeout = NGX_CONF_UNSET_MSEC; |
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160 cscf->resolver_timeout = NGX_CONF_UNSET_MSEC; |
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161 cscf->so_keepalive = NGX_CONF_UNSET; |
1136 | 162 |
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163 cscf->resolver = NGX_CONF_UNSET_PTR; |
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164 |
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165 cscf->file_name = cf->conf_file->file.name.data; |
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166 cscf->line = cf->conf_file->line; |
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167 |
521 | 168 return cscf; |
169 } | |
170 | |
171 | |
172 static char * | |
1136 | 173 ngx_mail_core_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) |
521 | 174 { |
1136 | 175 ngx_mail_core_srv_conf_t *prev = parent; |
176 ngx_mail_core_srv_conf_t *conf = child; | |
521 | 177 |
178 ngx_conf_merge_msec_value(conf->timeout, prev->timeout, 60000); | |
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179 ngx_conf_merge_msec_value(conf->resolver_timeout, prev->resolver_timeout, |
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180 30000); |
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181 |
587 | 182 ngx_conf_merge_value(conf->so_keepalive, prev->so_keepalive, 0); |
521 | 183 |
800 | 184 |
185 ngx_conf_merge_str_value(conf->server_name, prev->server_name, ""); | |
186 | |
187 if (conf->server_name.len == 0) { | |
188 conf->server_name.data = ngx_palloc(cf->pool, NGX_MAXHOSTNAMELEN); | |
189 if (conf->server_name.data == NULL) { | |
190 return NGX_CONF_ERROR; | |
191 } | |
192 | |
193 if (gethostname((char *) conf->server_name.data, NGX_MAXHOSTNAMELEN) | |
194 == -1) | |
195 { | |
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196 ngx_log_error(NGX_LOG_EMERG, cf->log, ngx_errno, |
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197 "gethostname() failed"); |
800 | 198 return NGX_CONF_ERROR; |
199 } | |
200 | |
201 conf->server_name.len = ngx_strlen(conf->server_name.data); | |
202 } | |
203 | |
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204 if (conf->protocol == NULL) { |
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205 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, |
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206 "unknown mail protocol for server in %s:%ui", |
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207 conf->file_name, conf->line); |
583 | 208 return NGX_CONF_ERROR; |
209 } | |
210 | |
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211 ngx_conf_merge_ptr_value(conf->resolver, prev->resolver, NULL); |
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212 |
521 | 213 return NGX_CONF_OK; |
214 } | |
215 | |
216 | |
217 static char * | |
1136 | 218 ngx_mail_core_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
521 | 219 { |
220 char *rv; | |
221 void *mconf; | |
222 ngx_uint_t m; | |
223 ngx_conf_t pcf; | |
1136 | 224 ngx_mail_module_t *module; |
225 ngx_mail_conf_ctx_t *ctx, *mail_ctx; | |
226 ngx_mail_core_srv_conf_t *cscf, **cscfp; | |
227 ngx_mail_core_main_conf_t *cmcf; | |
521 | 228 |
1136 | 229 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_mail_conf_ctx_t)); |
521 | 230 if (ctx == NULL) { |
231 return NGX_CONF_ERROR; | |
232 } | |
233 | |
1136 | 234 mail_ctx = cf->ctx; |
235 ctx->main_conf = mail_ctx->main_conf; | |
577 | 236 |
521 | 237 /* the server{}'s srv_conf */ |
238 | |
1136 | 239 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_mail_max_module); |
521 | 240 if (ctx->srv_conf == NULL) { |
241 return NGX_CONF_ERROR; | |
242 } | |
243 | |
244 for (m = 0; ngx_modules[m]; m++) { | |
1136 | 245 if (ngx_modules[m]->type != NGX_MAIL_MODULE) { |
521 | 246 continue; |
247 } | |
248 | |
249 module = ngx_modules[m]->ctx; | |
250 | |
251 if (module->create_srv_conf) { | |
252 mconf = module->create_srv_conf(cf); | |
253 if (mconf == NULL) { | |
254 return NGX_CONF_ERROR; | |
255 } | |
256 | |
257 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf; | |
258 } | |
259 } | |
260 | |
261 /* the server configuration context */ | |
262 | |
1136 | 263 cscf = ctx->srv_conf[ngx_mail_core_module.ctx_index]; |
521 | 264 cscf->ctx = ctx; |
265 | |
1136 | 266 cmcf = ctx->main_conf[ngx_mail_core_module.ctx_index]; |
521 | 267 |
268 cscfp = ngx_array_push(&cmcf->servers); | |
269 if (cscfp == NULL) { | |
270 return NGX_CONF_ERROR; | |
271 } | |
272 | |
273 *cscfp = cscf; | |
274 | |
275 | |
276 /* parse inside server{} */ | |
277 | |
278 pcf = *cf; | |
279 cf->ctx = ctx; | |
1136 | 280 cf->cmd_type = NGX_MAIL_SRV_CONF; |
521 | 281 |
282 rv = ngx_conf_parse(cf, NULL); | |
283 | |
284 *cf = pcf; | |
285 | |
286 return rv; | |
287 } | |
288 | |
289 | |
290 /* AF_INET only */ | |
291 | |
292 static char * | |
1136 | 293 ngx_mail_core_listen(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
521 | 294 { |
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295 ngx_mail_core_srv_conf_t *cscf = conf; |
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296 |
641 | 297 ngx_str_t *value; |
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298 ngx_url_t u; |
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299 ngx_uint_t i, m; |
1136 | 300 ngx_mail_listen_t *imls; |
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301 ngx_mail_module_t *module; |
1136 | 302 ngx_mail_core_main_conf_t *cmcf; |
521 | 303 |
304 value = cf->args->elts; | |
305 | |
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306 ngx_memzero(&u, sizeof(ngx_url_t)); |
521 | 307 |
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308 u.url = value[1]; |
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309 u.listen = 1; |
619 | 310 |
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311 if (ngx_parse_url(cf->pool, &u) != NGX_OK) { |
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312 if (u.err) { |
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313 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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314 "%s in \"%V\" of the \"listen\" directive", |
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315 u.err, &u.url); |
521 | 316 } |
317 | |
804
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318 return NGX_CONF_ERROR; |
521 | 319 } |
320 | |
1136 | 321 cmcf = ngx_mail_conf_get_module_main_conf(cf, ngx_mail_core_module); |
521 | 322 |
641 | 323 imls = cmcf->listen.elts; |
324 | |
325 for (i = 0; i < cmcf->listen.nelts; i++) { | |
326 | |
906 | 327 if (imls[i].addr != u.addr.in_addr || imls[i].port != u.port) { |
641 | 328 continue; |
329 } | |
330 | |
331 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
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332 "duplicate \"%V\" address and port pair", &u.url); |
577 | 333 return NGX_CONF_ERROR; |
521 | 334 } |
335 | |
641 | 336 imls = ngx_array_push(&cmcf->listen); |
337 if (imls == NULL) { | |
338 return NGX_CONF_ERROR; | |
339 } | |
563 | 340 |
1136 | 341 ngx_memzero(imls, sizeof(ngx_mail_listen_t)); |
641 | 342 |
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343 imls->addr = u.addr.in_addr; |
906 | 344 imls->port = u.port; |
641 | 345 imls->family = AF_INET; |
346 imls->ctx = cf->ctx; | |
521 | 347 |
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348 for (m = 0; ngx_modules[m]; m++) { |
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349 if (ngx_modules[m]->type != NGX_MAIL_MODULE) { |
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350 continue; |
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351 } |
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352 |
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353 module = ngx_modules[m]->ctx; |
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354 |
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355 if (module->protocol == NULL) { |
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356 continue; |
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357 } |
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358 |
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359 for (i = 0; module->protocol->port[i]; i++) { |
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360 if (module->protocol->port[i] == u.port) { |
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361 cscf->protocol = module->protocol; |
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362 break; |
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363 } |
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364 } |
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365 } |
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366 |
641 | 367 if (cf->args->nelts == 2) { |
368 return NGX_CONF_OK; | |
369 } | |
521 | 370 |
641 | 371 if (ngx_strcmp(value[2].data, "bind") == 0) { |
372 imls->bind = 1; | |
373 return NGX_CONF_OK; | |
374 } | |
521 | 375 |
641 | 376 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
377 "the invalid \"%V\" parameter", &value[2]); | |
378 return NGX_CONF_ERROR; | |
521 | 379 } |
527 | 380 |
381 | |
382 static char * | |
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383 ngx_mail_core_protocol(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
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384 { |
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385 ngx_mail_core_srv_conf_t *cscf = conf; |
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386 |
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387 ngx_str_t *value; |
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388 ngx_uint_t m; |
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389 ngx_mail_module_t *module; |
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390 |
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391 value = cf->args->elts; |
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392 |
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393 for (m = 0; ngx_modules[m]; m++) { |
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394 if (ngx_modules[m]->type != NGX_MAIL_MODULE) { |
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395 continue; |
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396 } |
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397 |
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398 module = ngx_modules[m]->ctx; |
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399 |
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400 if (module->protocol |
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401 && ngx_strcmp(module->protocol->name.data, value[1].data) == 0) |
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402 { |
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403 cscf->protocol = module->protocol; |
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404 |
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405 return NGX_CONF_OK; |
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406 } |
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407 } |
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408 |
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409 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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410 "unknown protocol \"%V\"", &value[1]); |
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411 return NGX_CONF_ERROR; |
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412 } |
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413 |
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414 |
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415 static char * |
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416 ngx_mail_core_resolver(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
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417 { |
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418 ngx_mail_core_srv_conf_t *cscf = conf; |
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419 |
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420 ngx_url_t u; |
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421 ngx_str_t *value; |
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422 |
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423 value = cf->args->elts; |
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424 |
1918 | 425 if (cscf->resolver != NGX_CONF_UNSET_PTR) { |
426 return "is duplicate"; | |
427 } | |
428 | |
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429 if (ngx_strcmp(value[1].data, "off") == 0) { |
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430 cscf->resolver = NULL; |
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431 return NGX_CONF_OK; |
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432 } |
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433 |
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434 ngx_memzero(&u, sizeof(ngx_url_t)); |
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435 |
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436 u.host = value[1]; |
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437 u.port = 53; |
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438 |
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439 if (ngx_inet_resolve_host(cf->pool, &u) != NGX_OK) { |
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440 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%V: %s", &u.host, u.err); |
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441 return NGX_CONF_ERROR; |
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442 } |
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443 |
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444 cscf->resolver = ngx_resolver_create(cf, &u.addrs[0]); |
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445 if (cscf->resolver == NULL) { |
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446 return NGX_CONF_OK; |
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447 } |
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448 |
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449 return NGX_CONF_OK; |
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450 } |
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451 |
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452 |
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453 char * |
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454 ngx_mail_capabilities(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
527 | 455 { |
456 char *p = conf; | |
457 | |
458 ngx_str_t *c, *value; | |
459 ngx_uint_t i; | |
460 ngx_array_t *a; | |
461 | |
462 a = (ngx_array_t *) (p + cmd->offset); | |
463 | |
464 value = cf->args->elts; | |
465 | |
466 for (i = 1; i < cf->args->nelts; i++) { | |
467 c = ngx_array_push(a); | |
468 if (c == NULL) { | |
469 return NGX_CONF_ERROR; | |
470 } | |
471 | |
472 *c = value[i]; | |
473 } | |
474 | |
475 return NGX_CONF_OK; | |
476 } |