Mercurial > hg > nginx
annotate src/mail/ngx_mail.c @ 2806:a445bd4eb571
ngx_create_listening()
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Tue, 05 May 2009 17:33:26 +0000 |
| parents | 8b54548fef6e |
| children | a96a8c916b0c |
| rev | line source |
|---|---|
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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6 |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 #include <ngx_event.h> |
| 1136 | 10 #include <ngx_mail.h> |
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11 |
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12 |
| 1136 | 13 static char *ngx_mail_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); |
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14 static ngx_int_t ngx_mail_cmp_conf_in_addrs(const void *one, const void *two); |
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15 |
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16 |
| 1136 | 17 ngx_uint_t ngx_mail_max_module; |
| 521 | 18 |
| 19 | |
| 1136 | 20 static ngx_command_t ngx_mail_commands[] = { |
| 21 | |
| 22 { ngx_string("mail"), | |
| 23 NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS, | |
| 24 ngx_mail_block, | |
| 25 0, | |
| 26 0, | |
| 27 NULL }, | |
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28 |
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29 { ngx_string("imap"), |
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30 NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS, |
| 1136 | 31 ngx_mail_block, |
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413
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32 0, |
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33 0, |
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34 NULL }, |
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35 |
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36 ngx_null_command |
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37 }; |
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38 |
| 577 | 39 |
| 1136 | 40 static ngx_core_module_t ngx_mail_module_ctx = { |
| 41 ngx_string("mail"), | |
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42 NULL, |
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43 NULL |
| 577 | 44 }; |
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45 |
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46 |
| 1136 | 47 ngx_module_t ngx_mail_module = { |
| 509 | 48 NGX_MODULE_V1, |
| 1136 | 49 &ngx_mail_module_ctx, /* module context */ |
| 50 ngx_mail_commands, /* module directives */ | |
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51 NGX_CORE_MODULE, /* module type */ |
| 541 | 52 NULL, /* init master */ |
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53 NULL, /* init module */ |
| 541 | 54 NULL, /* init process */ |
| 55 NULL, /* init thread */ | |
| 56 NULL, /* exit thread */ | |
| 57 NULL, /* exit process */ | |
| 58 NULL, /* exit master */ | |
| 59 NGX_MODULE_V1_PADDING | |
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60 }; |
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61 |
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62 |
| 521 | 63 static char * |
| 1136 | 64 ngx_mail_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
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65 { |
| 521 | 66 char *rv; |
| 641 | 67 u_char *text; |
| 68 size_t len; | |
| 69 ngx_uint_t i, a, l, m, mi, s, p, last, bind_all, done; | |
| 521 | 70 ngx_conf_t pcf; |
| 641 | 71 ngx_array_t in_ports; |
| 72 ngx_listening_t *ls; | |
| 2798 | 73 ngx_mail_listen_t *mls; |
| 1136 | 74 ngx_mail_module_t *module; |
| 2806 | 75 struct sockaddr_in sin; |
| 2798 | 76 ngx_mail_in_port_t *mip; |
| 1136 | 77 ngx_mail_conf_ctx_t *ctx; |
| 78 ngx_mail_conf_in_port_t *in_port; | |
| 79 ngx_mail_conf_in_addr_t *in_addr; | |
| 80 ngx_mail_core_srv_conf_t **cscfp; | |
| 81 ngx_mail_core_main_conf_t *cmcf; | |
| 521 | 82 |
| 1136 | 83 if (cmd->name.data[0] == 'i') { |
| 84 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, | |
| 85 "the \"imap\" directive is deprecated, " | |
| 86 "use the \"mail\" directive instead"); | |
| 87 } | |
| 521 | 88 |
| 1136 | 89 /* the main mail context */ |
| 90 | |
| 91 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_mail_conf_ctx_t)); | |
| 521 | 92 if (ctx == NULL) { |
| 93 return NGX_CONF_ERROR; | |
| 94 } | |
| 95 | |
| 1136 | 96 *(ngx_mail_conf_ctx_t **) conf = ctx; |
| 521 | 97 |
| 98 /* count the number of the http modules and set up their indices */ | |
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99 |
| 1136 | 100 ngx_mail_max_module = 0; |
| 521 | 101 for (m = 0; ngx_modules[m]; m++) { |
| 1136 | 102 if (ngx_modules[m]->type != NGX_MAIL_MODULE) { |
| 521 | 103 continue; |
| 104 } | |
| 105 | |
| 1136 | 106 ngx_modules[m]->ctx_index = ngx_mail_max_module++; |
| 521 | 107 } |
| 108 | |
| 109 | |
| 1136 | 110 /* the mail main_conf context, it is the same in the all mail contexts */ |
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111 |
| 521 | 112 ctx->main_conf = ngx_pcalloc(cf->pool, |
| 1136 | 113 sizeof(void *) * ngx_mail_max_module); |
| 521 | 114 if (ctx->main_conf == NULL) { |
| 115 return NGX_CONF_ERROR; | |
| 116 } | |
| 117 | |
| 118 | |
| 119 /* | |
| 1136 | 120 * the mail null srv_conf context, it is used to merge |
| 521 | 121 * the server{}s' srv_conf's |
| 122 */ | |
| 123 | |
| 1136 | 124 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_mail_max_module); |
| 521 | 125 if (ctx->srv_conf == NULL) { |
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126 return NGX_CONF_ERROR; |
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127 } |
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128 |
| 521 | 129 |
| 130 /* | |
| 131 * create the main_conf's, the null srv_conf's, and the null loc_conf's | |
| 1136 | 132 * of the all mail modules |
| 521 | 133 */ |
| 134 | |
| 135 for (m = 0; ngx_modules[m]; m++) { | |
| 1136 | 136 if (ngx_modules[m]->type != NGX_MAIL_MODULE) { |
| 521 | 137 continue; |
| 138 } | |
| 139 | |
| 140 module = ngx_modules[m]->ctx; | |
| 141 mi = ngx_modules[m]->ctx_index; | |
| 142 | |
| 143 if (module->create_main_conf) { | |
| 144 ctx->main_conf[mi] = module->create_main_conf(cf); | |
| 145 if (ctx->main_conf[mi] == NULL) { | |
| 146 return NGX_CONF_ERROR; | |
| 147 } | |
| 148 } | |
| 149 | |
| 150 if (module->create_srv_conf) { | |
| 151 ctx->srv_conf[mi] = module->create_srv_conf(cf); | |
| 152 if (ctx->srv_conf[mi] == NULL) { | |
| 153 return NGX_CONF_ERROR; | |
| 154 } | |
| 155 } | |
| 156 } | |
| 157 | |
| 158 | |
| 1136 | 159 /* parse inside the mail{} block */ |
| 521 | 160 |
| 161 pcf = *cf; | |
| 162 cf->ctx = ctx; | |
| 163 | |
| 1136 | 164 cf->module_type = NGX_MAIL_MODULE; |
| 165 cf->cmd_type = NGX_MAIL_MAIN_CONF; | |
| 521 | 166 rv = ngx_conf_parse(cf, NULL); |
| 167 | |
| 168 if (rv != NGX_CONF_OK) { | |
| 169 *cf = pcf; | |
| 170 return rv; | |
| 171 } | |
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172 |
| 521 | 173 |
| 1136 | 174 /* init mail{} main_conf's, merge the server{}s' srv_conf's */ |
| 521 | 175 |
| 1136 | 176 cmcf = ctx->main_conf[ngx_mail_core_module.ctx_index]; |
| 521 | 177 cscfp = cmcf->servers.elts; |
| 178 | |
| 179 for (m = 0; ngx_modules[m]; m++) { | |
| 1136 | 180 if (ngx_modules[m]->type != NGX_MAIL_MODULE) { |
| 521 | 181 continue; |
| 182 } | |
| 183 | |
| 184 module = ngx_modules[m]->ctx; | |
| 185 mi = ngx_modules[m]->ctx_index; | |
| 186 | |
| 1136 | 187 /* init mail{} main_conf's */ |
| 521 | 188 |
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189 cf->ctx = ctx; |
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190 |
| 521 | 191 if (module->init_main_conf) { |
| 577 | 192 rv = module->init_main_conf(cf, ctx->main_conf[mi]); |
| 521 | 193 if (rv != NGX_CONF_OK) { |
| 194 *cf = pcf; | |
| 195 return rv; | |
| 196 } | |
| 197 } | |
| 198 | |
| 199 for (s = 0; s < cmcf->servers.nelts; s++) { | |
| 577 | 200 |
| 521 | 201 /* merge the server{}s' srv_conf's */ |
| 577 | 202 |
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203 cf->ctx = cscfp[s]->ctx; |
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204 |
| 521 | 205 if (module->merge_srv_conf) { |
| 206 rv = module->merge_srv_conf(cf, | |
| 207 ctx->srv_conf[mi], | |
| 208 cscfp[s]->ctx->srv_conf[mi]); | |
| 209 if (rv != NGX_CONF_OK) { | |
| 210 *cf = pcf; | |
| 211 return rv; | |
| 212 } | |
| 213 } | |
| 214 } | |
| 215 } | |
| 216 | |
| 577 | 217 *cf = pcf; |
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218 |
| 641 | 219 |
| 220 if (ngx_array_init(&in_ports, cf->temp_pool, 4, | |
| 1136 | 221 sizeof(ngx_mail_conf_in_port_t)) |
| 641 | 222 != NGX_OK) |
| 223 { | |
| 224 return NGX_CONF_ERROR; | |
| 225 } | |
| 226 | |
| 2798 | 227 mls = cmcf->listen.elts; |
| 641 | 228 |
| 229 for (l = 0; l < cmcf->listen.nelts; l++) { | |
| 230 | |
| 231 /* AF_INET only */ | |
| 232 | |
| 233 in_port = in_ports.elts; | |
| 234 for (p = 0; p < in_ports.nelts; p++) { | |
| 2798 | 235 if (in_port[p].port == mls[l].port) { |
| 641 | 236 in_port = &in_port[p]; |
| 237 goto found; | |
| 238 } | |
| 239 } | |
| 240 | |
| 241 in_port = ngx_array_push(&in_ports); | |
| 242 if (in_port == NULL) { | |
| 243 return NGX_CONF_ERROR; | |
| 244 } | |
| 245 | |
| 2798 | 246 in_port->port = mls[l].port; |
| 641 | 247 |
| 248 if (ngx_array_init(&in_port->addrs, cf->temp_pool, 2, | |
| 1136 | 249 sizeof(ngx_mail_conf_in_addr_t)) |
| 641 | 250 != NGX_OK) |
| 251 { | |
| 252 return NGX_CONF_ERROR; | |
| 253 } | |
| 254 | |
| 255 found: | |
| 256 | |
| 257 in_addr = ngx_array_push(&in_port->addrs); | |
| 258 if (in_addr == NULL) { | |
| 259 return NGX_CONF_ERROR; | |
| 260 } | |
| 261 | |
| 2798 | 262 in_addr->addr = mls[l].addr; |
| 263 in_addr->ctx = mls[l].ctx; | |
| 264 in_addr->bind = mls[l].bind; | |
| 2224 | 265 #if (NGX_MAIL_SSL) |
| 2798 | 266 in_addr->ssl = mls[l].ssl; |
| 2224 | 267 #endif |
| 641 | 268 } |
| 269 | |
| 270 /* optimize the lists of ports and addresses */ | |
| 271 | |
| 272 /* AF_INET only */ | |
| 273 | |
| 274 in_port = in_ports.elts; | |
| 275 for (p = 0; p < in_ports.nelts; p++) { | |
| 276 | |
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277 ngx_sort(in_port[p].addrs.elts, (size_t) in_port[p].addrs.nelts, |
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278 sizeof(ngx_mail_conf_in_addr_t), ngx_mail_cmp_conf_in_addrs); |
| 641 | 279 |
| 280 in_addr = in_port[p].addrs.elts; | |
| 281 last = in_port[p].addrs.nelts; | |
| 282 | |
| 283 /* | |
| 284 * if there is the binding to the "*:port" then we need to bind() | |
| 285 * to the "*:port" only and ignore the other bindings | |
| 286 */ | |
| 287 | |
| 288 if (in_addr[last - 1].addr == INADDR_ANY) { | |
| 289 in_addr[last - 1].bind = 1; | |
| 290 bind_all = 0; | |
| 291 | |
| 292 } else { | |
| 293 bind_all = 1; | |
| 294 } | |
| 295 | |
| 296 for (a = 0; a < last; /* void */ ) { | |
| 297 | |
| 298 if (!bind_all && !in_addr[a].bind) { | |
| 299 a++; | |
| 300 continue; | |
| 301 } | |
| 302 | |
| 2806 | 303 ngx_memzero(&sin, sizeof(struct sockaddr_in)); |
| 304 | |
| 305 sin.sin_family = AF_INET; | |
| 306 sin.sin_addr.s_addr = in_addr[a].addr; | |
| 307 sin.sin_port = htons(in_port[p].port); | |
| 308 | |
| 309 ls = ngx_create_listening(cf, &sin, sizeof(struct sockaddr_in)); | |
| 641 | 310 if (ls == NULL) { |
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311 return NULL; |
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312 } |
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313 |
| 641 | 314 ls->addr_ntop = 1; |
| 1136 | 315 ls->handler = ngx_mail_init_connection; |
| 641 | 316 ls->pool_size = 256; |
| 317 | |
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318 /* TODO: error_log directive */ |
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319 ls->logp = &cf->cycle->new_log; |
| 641 | 320 ls->log.data = &ls->addr_text; |
| 321 ls->log.handler = ngx_accept_log_error; | |
| 322 | |
| 2798 | 323 mip = ngx_palloc(cf->pool, sizeof(ngx_mail_in_port_t)); |
| 324 if (mip == NULL) { | |
| 641 | 325 return NGX_CONF_ERROR; |
| 326 } | |
| 327 | |
| 2798 | 328 ls->servers = mip; |
| 641 | 329 |
| 330 in_addr = in_port[p].addrs.elts; | |
| 331 | |
| 332 if (in_addr[a].bind && in_addr[a].addr != INADDR_ANY) { | |
| 2798 | 333 mip->naddrs = 1; |
| 641 | 334 done = 0; |
| 335 | |
| 336 } else if (in_port[p].addrs.nelts > 1 | |
| 337 && in_addr[last - 1].addr == INADDR_ANY) | |
| 338 { | |
| 2798 | 339 mip->naddrs = last; |
| 641 | 340 done = 1; |
| 341 | |
| 342 } else { | |
| 2798 | 343 mip->naddrs = 1; |
| 641 | 344 done = 0; |
| 345 } | |
| 346 | |
| 347 #if 0 | |
| 348 ngx_log_error(NGX_LOG_ALERT, cf->log, 0, | |
| 349 "%ui: %V %d %ui %ui", | |
| 350 a, &ls->addr_text, in_addr[a].bind, | |
| 2798 | 351 mip->naddrs, last); |
| 641 | 352 #endif |
| 353 | |
| 2798 | 354 mip->addrs = ngx_pcalloc(cf->pool, |
| 355 mip->naddrs * sizeof(ngx_mail_in_addr_t)); | |
| 356 if (mip->addrs == NULL) { | |
| 641 | 357 return NGX_CONF_ERROR; |
| 358 } | |
| 359 | |
| 2798 | 360 for (i = 0; i < mip->naddrs; i++) { |
| 361 mip->addrs[i].addr = in_addr[i].addr; | |
| 362 mip->addrs[i].ctx = in_addr[i].ctx; | |
| 641 | 363 |
| 2049 | 364 text = ngx_pnalloc(cf->pool, |
|
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365 NGX_INET_ADDRSTRLEN + sizeof(":65535") - 1); |
| 641 | 366 if (text == NULL) { |
| 367 return NGX_CONF_ERROR; | |
| 368 } | |
| 369 | |
| 370 len = ngx_inet_ntop(AF_INET, &in_addr[i].addr, text, | |
|
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371 NGX_INET_ADDRSTRLEN); |
| 641 | 372 |
| 373 len = ngx_sprintf(text + len, ":%d", in_port[p].port) - text; | |
| 374 | |
| 2798 | 375 mip->addrs[i].addr_text.len = len; |
| 376 mip->addrs[i].addr_text.data = text; | |
| 2224 | 377 |
| 378 #if (NGX_MAIL_SSL) | |
| 2798 | 379 mip->addrs[i].ssl = in_addr[i].ssl; |
| 2224 | 380 #endif |
| 641 | 381 } |
| 382 | |
| 383 if (done) { | |
| 384 break; | |
| 385 } | |
| 386 | |
| 387 in_addr++; | |
| 388 in_port[p].addrs.elts = in_addr; | |
| 389 last--; | |
| 390 | |
| 391 a = 0; | |
| 392 } | |
| 393 } | |
| 394 | |
|
417
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395 return NGX_CONF_OK; |
|
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396 } |
| 641 | 397 |
| 398 | |
|
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399 static ngx_int_t |
| 1136 | 400 ngx_mail_cmp_conf_in_addrs(const void *one, const void *two) |
| 641 | 401 { |
| 1136 | 402 ngx_mail_conf_in_addr_t *first, *second; |
| 641 | 403 |
| 1136 | 404 first = (ngx_mail_conf_in_addr_t *) one; |
| 405 second = (ngx_mail_conf_in_addr_t *) two; | |
| 641 | 406 |
| 407 if (first->addr == INADDR_ANY) { | |
| 408 /* the INADDR_ANY must be the last resort, shift it to the end */ | |
| 409 return 1; | |
| 410 } | |
| 411 | |
| 412 if (first->bind && !second->bind) { | |
| 413 /* shift explicit bind()ed addresses to the start */ | |
| 414 return -1; | |
| 415 } | |
| 416 | |
| 417 if (!first->bind && second->bind) { | |
| 418 /* shift explicit bind()ed addresses to the start */ | |
| 419 return 1; | |
| 420 } | |
| 421 | |
| 422 /* do not sort by default */ | |
| 423 | |
| 424 return 0; | |
| 425 } |