Mercurial > hg > nginx
annotate src/mail/ngx_mail.c @ 3083:ffe8bfb38184
clean cache updating state if a response has uncacheable code or
cache prohibitive headers
author | Igor Sysoev <igor@sysoev.ru> |
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date | Fri, 04 Sep 2009 09:57:38 +0000 |
parents | a96a8c916b0c |
children | c4513d4dd024 4919fb357a5d |
rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
441
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4 */ |
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5 |
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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> |
417
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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_add_ports(ngx_conf_t *cf, ngx_array_t *ports, |
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15 ngx_mail_listen_t *listen); |
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16 static char *ngx_mail_optimize_servers(ngx_conf_t *cf, ngx_array_t *ports); |
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17 static ngx_int_t ngx_mail_add_addrs(ngx_conf_t *cf, ngx_mail_port_t *mport, |
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18 ngx_mail_conf_addr_t *addr); |
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19 #if (NGX_HAVE_INET6) |
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20 static ngx_int_t ngx_mail_add_addrs6(ngx_conf_t *cf, ngx_mail_port_t *mport, |
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21 ngx_mail_conf_addr_t *addr); |
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22 #endif |
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23 static ngx_int_t ngx_mail_cmp_conf_addrs(const void *one, const void *two); |
413
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24 |
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25 |
1136 | 26 ngx_uint_t ngx_mail_max_module; |
521 | 27 |
28 | |
1136 | 29 static ngx_command_t ngx_mail_commands[] = { |
30 | |
31 { ngx_string("mail"), | |
32 NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS, | |
33 ngx_mail_block, | |
34 0, | |
35 0, | |
36 NULL }, | |
413
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37 |
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38 { ngx_string("imap"), |
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39 NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS, |
1136 | 40 ngx_mail_block, |
413
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41 0, |
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42 0, |
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43 NULL }, |
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44 |
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45 ngx_null_command |
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46 }; |
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47 |
577 | 48 |
1136 | 49 static ngx_core_module_t ngx_mail_module_ctx = { |
50 ngx_string("mail"), | |
413
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51 NULL, |
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52 NULL |
577 | 53 }; |
413
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54 |
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55 |
1136 | 56 ngx_module_t ngx_mail_module = { |
509 | 57 NGX_MODULE_V1, |
1136 | 58 &ngx_mail_module_ctx, /* module context */ |
59 ngx_mail_commands, /* module directives */ | |
413
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60 NGX_CORE_MODULE, /* module type */ |
541 | 61 NULL, /* init master */ |
413
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62 NULL, /* init module */ |
541 | 63 NULL, /* init process */ |
64 NULL, /* init thread */ | |
65 NULL, /* exit thread */ | |
66 NULL, /* exit process */ | |
67 NULL, /* exit master */ | |
68 NGX_MODULE_V1_PADDING | |
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69 }; |
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70 |
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71 |
521 | 72 static char * |
1136 | 73 ngx_mail_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
417
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74 { |
521 | 75 char *rv; |
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76 ngx_uint_t i, m, mi, s; |
521 | 77 ngx_conf_t pcf; |
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78 ngx_array_t ports; |
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79 ngx_mail_listen_t *listen; |
1136 | 80 ngx_mail_module_t *module; |
81 ngx_mail_conf_ctx_t *ctx; | |
82 ngx_mail_core_srv_conf_t **cscfp; | |
83 ngx_mail_core_main_conf_t *cmcf; | |
521 | 84 |
1136 | 85 if (cmd->name.data[0] == 'i') { |
86 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, | |
87 "the \"imap\" directive is deprecated, " | |
88 "use the \"mail\" directive instead"); | |
89 } | |
521 | 90 |
1136 | 91 /* the main mail context */ |
92 | |
93 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_mail_conf_ctx_t)); | |
521 | 94 if (ctx == NULL) { |
95 return NGX_CONF_ERROR; | |
96 } | |
97 | |
1136 | 98 *(ngx_mail_conf_ctx_t **) conf = ctx; |
521 | 99 |
100 /* count the number of the http modules and set up their indices */ | |
417
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101 |
1136 | 102 ngx_mail_max_module = 0; |
521 | 103 for (m = 0; ngx_modules[m]; m++) { |
1136 | 104 if (ngx_modules[m]->type != NGX_MAIL_MODULE) { |
521 | 105 continue; |
106 } | |
107 | |
1136 | 108 ngx_modules[m]->ctx_index = ngx_mail_max_module++; |
521 | 109 } |
110 | |
111 | |
1136 | 112 /* the mail main_conf context, it is the same in the all mail contexts */ |
417
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113 |
521 | 114 ctx->main_conf = ngx_pcalloc(cf->pool, |
1136 | 115 sizeof(void *) * ngx_mail_max_module); |
521 | 116 if (ctx->main_conf == NULL) { |
117 return NGX_CONF_ERROR; | |
118 } | |
119 | |
120 | |
121 /* | |
1136 | 122 * the mail null srv_conf context, it is used to merge |
521 | 123 * the server{}s' srv_conf's |
124 */ | |
125 | |
1136 | 126 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_mail_max_module); |
521 | 127 if (ctx->srv_conf == NULL) { |
417
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128 return NGX_CONF_ERROR; |
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129 } |
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130 |
521 | 131 |
132 /* | |
133 * create the main_conf's, the null srv_conf's, and the null loc_conf's | |
1136 | 134 * of the all mail modules |
521 | 135 */ |
136 | |
137 for (m = 0; ngx_modules[m]; m++) { | |
1136 | 138 if (ngx_modules[m]->type != NGX_MAIL_MODULE) { |
521 | 139 continue; |
140 } | |
141 | |
142 module = ngx_modules[m]->ctx; | |
143 mi = ngx_modules[m]->ctx_index; | |
144 | |
145 if (module->create_main_conf) { | |
146 ctx->main_conf[mi] = module->create_main_conf(cf); | |
147 if (ctx->main_conf[mi] == NULL) { | |
148 return NGX_CONF_ERROR; | |
149 } | |
150 } | |
151 | |
152 if (module->create_srv_conf) { | |
153 ctx->srv_conf[mi] = module->create_srv_conf(cf); | |
154 if (ctx->srv_conf[mi] == NULL) { | |
155 return NGX_CONF_ERROR; | |
156 } | |
157 } | |
158 } | |
159 | |
160 | |
1136 | 161 /* parse inside the mail{} block */ |
521 | 162 |
163 pcf = *cf; | |
164 cf->ctx = ctx; | |
165 | |
1136 | 166 cf->module_type = NGX_MAIL_MODULE; |
167 cf->cmd_type = NGX_MAIL_MAIN_CONF; | |
521 | 168 rv = ngx_conf_parse(cf, NULL); |
169 | |
170 if (rv != NGX_CONF_OK) { | |
171 *cf = pcf; | |
172 return rv; | |
173 } | |
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174 |
521 | 175 |
1136 | 176 /* init mail{} main_conf's, merge the server{}s' srv_conf's */ |
521 | 177 |
1136 | 178 cmcf = ctx->main_conf[ngx_mail_core_module.ctx_index]; |
521 | 179 cscfp = cmcf->servers.elts; |
180 | |
181 for (m = 0; ngx_modules[m]; m++) { | |
1136 | 182 if (ngx_modules[m]->type != NGX_MAIL_MODULE) { |
521 | 183 continue; |
184 } | |
185 | |
186 module = ngx_modules[m]->ctx; | |
187 mi = ngx_modules[m]->ctx_index; | |
188 | |
1136 | 189 /* init mail{} main_conf's */ |
521 | 190 |
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191 cf->ctx = ctx; |
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192 |
521 | 193 if (module->init_main_conf) { |
577 | 194 rv = module->init_main_conf(cf, ctx->main_conf[mi]); |
521 | 195 if (rv != NGX_CONF_OK) { |
196 *cf = pcf; | |
197 return rv; | |
198 } | |
199 } | |
200 | |
201 for (s = 0; s < cmcf->servers.nelts; s++) { | |
577 | 202 |
521 | 203 /* merge the server{}s' srv_conf's */ |
577 | 204 |
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205 cf->ctx = cscfp[s]->ctx; |
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206 |
521 | 207 if (module->merge_srv_conf) { |
208 rv = module->merge_srv_conf(cf, | |
209 ctx->srv_conf[mi], | |
210 cscfp[s]->ctx->srv_conf[mi]); | |
211 if (rv != NGX_CONF_OK) { | |
212 *cf = pcf; | |
213 return rv; | |
214 } | |
215 } | |
216 } | |
217 } | |
218 | |
577 | 219 *cf = pcf; |
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220 |
641 | 221 |
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222 if (ngx_array_init(&ports, cf->temp_pool, 4, sizeof(ngx_mail_conf_port_t)) |
641 | 223 != NGX_OK) |
224 { | |
225 return NGX_CONF_ERROR; | |
226 } | |
227 | |
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228 listen = cmcf->listen.elts; |
641 | 229 |
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230 for (i = 0; i < cmcf->listen.nelts; i++) { |
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231 if (ngx_mail_add_ports(cf, &ports, &listen[i]) != NGX_OK) { |
641 | 232 return NGX_CONF_ERROR; |
233 } | |
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234 } |
641 | 235 |
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236 return ngx_mail_optimize_servers(cf, &ports); |
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237 } |
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238 |
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239 |
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240 static ngx_int_t |
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241 ngx_mail_add_ports(ngx_conf_t *cf, ngx_array_t *ports, |
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242 ngx_mail_listen_t *listen) |
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243 { |
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244 in_port_t p; |
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245 ngx_uint_t i; |
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246 struct sockaddr *sa; |
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247 struct sockaddr_in *sin; |
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248 ngx_mail_conf_port_t *port; |
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249 ngx_mail_conf_addr_t *addr; |
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250 #if (NGX_HAVE_INET6) |
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251 struct sockaddr_in6 *sin6; |
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252 #endif |
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253 |
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254 sa = (struct sockaddr *) &listen->sockaddr; |
641 | 255 |
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256 switch (sa->sa_family) { |
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257 |
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258 #if (NGX_HAVE_INET6) |
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259 case AF_INET6: |
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260 sin6 = (struct sockaddr_in6 *) sa; |
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261 p = sin6->sin6_port; |
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262 break; |
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263 #endif |
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264 |
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265 default: /* AF_INET */ |
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266 sin = (struct sockaddr_in *) sa; |
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267 p = sin->sin_port; |
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268 break; |
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269 } |
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270 |
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271 port = ports->elts; |
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272 for (i = 0; i < ports->nelts; i++) { |
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273 if (p == port[i].port && sa->sa_family == port[i].family) { |
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274 |
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275 /* a port is already in the port list */ |
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276 |
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277 port = &port[i]; |
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278 goto found; |
641 | 279 } |
280 } | |
281 | |
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282 /* add a port to the port list */ |
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283 |
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284 port = ngx_array_push(ports); |
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285 if (port == NULL) { |
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286 return NGX_ERROR; |
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287 } |
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288 |
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289 port->family = sa->sa_family; |
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290 port->port = p; |
641 | 291 |
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292 if (ngx_array_init(&port->addrs, cf->temp_pool, 2, |
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293 sizeof(ngx_mail_conf_addr_t)) |
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294 != NGX_OK) |
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295 { |
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296 return NGX_ERROR; |
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297 } |
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298 |
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299 found: |
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300 |
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301 addr = ngx_array_push(&port->addrs); |
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302 if (addr == NULL) { |
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303 return NGX_ERROR; |
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304 } |
641 | 305 |
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306 addr->sockaddr = (struct sockaddr *) &listen->sockaddr; |
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307 addr->socklen = listen->socklen; |
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308 addr->ctx = listen->ctx; |
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309 addr->bind = listen->bind; |
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310 addr->wildcard = listen->wildcard; |
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311 #if (NGX_MAIL_SSL) |
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312 addr->ssl = listen->ssl; |
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313 #endif |
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314 #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY) |
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315 addr->ipv6only = listen->ipv6only; |
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316 #endif |
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317 |
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318 return NGX_OK; |
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319 } |
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320 |
641 | 321 |
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322 static char * |
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323 ngx_mail_optimize_servers(ngx_conf_t *cf, ngx_array_t *ports) |
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324 { |
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325 ngx_uint_t i, p, last, bind_wildcard; |
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326 ngx_listening_t *ls; |
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327 ngx_mail_port_t *mport; |
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328 ngx_mail_conf_port_t *port; |
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329 ngx_mail_conf_addr_t *addr; |
641 | 330 |
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331 port = ports->elts; |
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332 for (p = 0; p < ports->nelts; p++) { |
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333 |
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334 ngx_sort(port[p].addrs.elts, (size_t) port[p].addrs.nelts, |
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335 sizeof(ngx_mail_conf_addr_t), ngx_mail_cmp_conf_addrs); |
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336 |
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337 addr = port[p].addrs.elts; |
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338 last = port[p].addrs.nelts; |
641 | 339 |
340 /* | |
341 * if there is the binding to the "*:port" then we need to bind() | |
342 * to the "*:port" only and ignore the other bindings | |
343 */ | |
344 | |
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345 if (addr[last - 1].wildcard) { |
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346 addr[last - 1].bind = 1; |
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347 bind_wildcard = 1; |
641 | 348 |
349 } else { | |
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350 bind_wildcard = 0; |
641 | 351 } |
352 | |
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353 i = 0; |
641 | 354 |
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355 while (i < last) { |
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356 |
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357 if (bind_wildcard && !addr[i].bind) { |
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358 i++; |
641 | 359 continue; |
360 } | |
361 | |
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362 ls = ngx_create_listening(cf, addr[i].sockaddr, addr[i].socklen); |
641 | 363 if (ls == NULL) { |
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364 return NGX_CONF_ERROR; |
2799
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365 } |
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366 |
641 | 367 ls->addr_ntop = 1; |
1136 | 368 ls->handler = ngx_mail_init_connection; |
641 | 369 ls->pool_size = 256; |
370 | |
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371 /* TODO: error_log directive */ |
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372 ls->logp = &cf->cycle->new_log; |
641 | 373 ls->log.data = &ls->addr_text; |
374 ls->log.handler = ngx_accept_log_error; | |
375 | |
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376 #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY) |
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377 ls->ipv6only = addr[i].ipv6only; |
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378 #endif |
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379 |
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380 mport = ngx_palloc(cf->pool, sizeof(ngx_mail_port_t)); |
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381 if (mport == NULL) { |
641 | 382 return NGX_CONF_ERROR; |
383 } | |
384 | |
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385 ls->servers = mport; |
641 | 386 |
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387 if (i == last - 1) { |
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388 mport->naddrs = last; |
641 | 389 |
390 } else { | |
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391 mport->naddrs = 1; |
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392 i = 0; |
641 | 393 } |
394 | |
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395 switch (ls->sockaddr->sa_family) { |
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396 #if (NGX_HAVE_INET6) |
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397 case AF_INET6: |
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398 if (ngx_mail_add_addrs6(cf, mport, addr) != NGX_OK) { |
641 | 399 return NGX_CONF_ERROR; |
400 } | |
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401 break; |
2224 | 402 #endif |
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403 default: /* AF_INET */ |
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404 if (ngx_mail_add_addrs(cf, mport, addr) != NGX_OK) { |
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405 return NGX_CONF_ERROR; |
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406 } |
641 | 407 break; |
408 } | |
409 | |
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410 addr++; |
641 | 411 last--; |
412 } | |
413 } | |
414 | |
417
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415 return NGX_CONF_OK; |
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416 } |
641 | 417 |
418 | |
1956
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419 static ngx_int_t |
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420 ngx_mail_add_addrs(ngx_conf_t *cf, ngx_mail_port_t *mport, |
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421 ngx_mail_conf_addr_t *addr) |
641 | 422 { |
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423 u_char *p; |
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424 size_t len; |
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425 ngx_uint_t i; |
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426 ngx_mail_in_addr_t *addrs; |
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427 struct sockaddr_in *sin; |
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428 u_char buf[NGX_SOCKADDR_STRLEN]; |
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429 |
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430 mport->addrs = ngx_pcalloc(cf->pool, |
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431 mport->naddrs * sizeof(ngx_mail_in_addr_t)); |
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432 if (mport->addrs == NULL) { |
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433 return NGX_ERROR; |
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434 } |
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435 |
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436 addrs = mport->addrs; |
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437 |
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438 for (i = 0; i < mport->naddrs; i++) { |
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439 |
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440 sin = (struct sockaddr_in *) addr[i].sockaddr; |
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441 addrs[i].addr = sin->sin_addr.s_addr; |
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442 |
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443 addrs[i].conf.ctx = addr[i].ctx; |
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444 #if (NGX_MAIL_SSL) |
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445 addrs[i].conf.ssl = addr[i].ssl; |
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446 #endif |
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447 |
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448 len = ngx_sock_ntop(addr[i].sockaddr, buf, NGX_SOCKADDR_STRLEN, 1); |
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449 |
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450 p = ngx_pnalloc(cf->pool, len); |
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451 if (p == NULL) { |
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452 return NGX_ERROR; |
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453 } |
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454 |
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455 ngx_memcpy(p, buf, len); |
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456 |
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457 addrs[i].conf.addr_text.len = len; |
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458 addrs[i].conf.addr_text.data = p; |
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459 } |
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460 |
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461 return NGX_OK; |
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462 } |
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|
463 |
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464 |
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465 #if (NGX_HAVE_INET6) |
641 | 466 |
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467 static ngx_int_t |
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468 ngx_mail_add_addrs6(ngx_conf_t *cf, ngx_mail_port_t *mport, |
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469 ngx_mail_conf_addr_t *addr) |
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470 { |
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471 u_char *p; |
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472 size_t len; |
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473 ngx_uint_t i; |
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474 ngx_mail_in6_addr_t *addrs6; |
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475 struct sockaddr_in6 *sin6; |
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476 u_char buf[NGX_SOCKADDR_STRLEN]; |
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477 |
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478 mport->addrs = ngx_pcalloc(cf->pool, |
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479 mport->naddrs * sizeof(ngx_mail_in6_addr_t)); |
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480 if (mport->addrs == NULL) { |
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481 return NGX_ERROR; |
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482 } |
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483 |
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484 addrs6 = mport->addrs; |
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485 |
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486 for (i = 0; i < mport->naddrs; i++) { |
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487 |
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488 sin6 = (struct sockaddr_in6 *) addr[i].sockaddr; |
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489 addrs6[i].addr6 = sin6->sin6_addr; |
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490 |
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491 addrs6[i].conf.ctx = addr[i].ctx; |
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492 #if (NGX_MAIL_SSL) |
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493 addrs6[i].conf.ssl = addr[i].ssl; |
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494 #endif |
641 | 495 |
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496 len = ngx_sock_ntop(addr[i].sockaddr, buf, NGX_SOCKADDR_STRLEN, 1); |
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497 |
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498 p = ngx_pnalloc(cf->pool, len); |
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499 if (p == NULL) { |
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500 return NGX_ERROR; |
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501 } |
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502 |
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503 ngx_memcpy(p, buf, len); |
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504 |
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505 addrs6[i].conf.addr_text.len = len; |
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506 addrs6[i].conf.addr_text.data = p; |
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|
507 } |
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|
508 |
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|
509 return NGX_OK; |
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510 } |
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|
511 |
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512 #endif |
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|
513 |
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|
514 |
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|
515 static ngx_int_t |
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516 ngx_mail_cmp_conf_addrs(const void *one, const void *two) |
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517 { |
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|
518 ngx_mail_conf_addr_t *first, *second; |
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|
519 |
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|
520 first = (ngx_mail_conf_addr_t *) one; |
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|
521 second = (ngx_mail_conf_addr_t *) two; |
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|
522 |
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|
523 if (first->wildcard) { |
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|
524 /* a wildcard must be the last resort, shift it to the end */ |
641 | 525 return 1; |
526 } | |
527 | |
528 if (first->bind && !second->bind) { | |
529 /* shift explicit bind()ed addresses to the start */ | |
530 return -1; | |
531 } | |
532 | |
533 if (!first->bind && second->bind) { | |
534 /* shift explicit bind()ed addresses to the start */ | |
535 return 1; | |
536 } | |
537 | |
538 /* do not sort by default */ | |
539 | |
540 return 0; | |
541 } |