Mercurial > hg > nginx-quic
annotate src/mail/ngx_mail.c @ 6982:ac9b1df5b246
SSL: disabled renegotiation detection in client mode.
CVE-2009-3555 is no longer relevant and mitigated by the renegotiation
info extension (secure renegotiation). On the other hand, unexpected
renegotiation still introduces potential security risks, and hence we do
not allow renegotiation on the server side, as we never request renegotiation.
On the client side the situation is different though. There are backends
which explicitly request renegotiation, and disabled renegotiation
introduces interoperability problems. This change allows renegotiation
on the client side, and fixes interoperability problems as observed with
such backends (ticket #872).
Additionally, with TLSv1.3 the SSL_CB_HANDSHAKE_START flag is currently set
by OpenSSL when receiving a NewSessionTicket message, and was detected by
nginx as a renegotiation attempt. This looks like a bug in OpenSSL, though
this change also allows better interoperability till the problem is fixed.
author | Sergey Kandaurov <pluknet@nginx.com> |
---|---|
date | Tue, 18 Apr 2017 16:08:44 +0300 |
parents | 6c13008ad503 |
children | 4f9b72a229c1 |
rev | line source |
---|---|
441
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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6 |
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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 #include <ngx_event.h> |
1136 | 11 #include <ngx_mail.h> |
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12 |
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13 |
1136 | 14 static char *ngx_mail_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); |
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15 static ngx_int_t ngx_mail_add_ports(ngx_conf_t *cf, ngx_array_t *ports, |
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16 ngx_mail_listen_t *listen); |
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17 static char *ngx_mail_optimize_servers(ngx_conf_t *cf, ngx_array_t *ports); |
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18 static ngx_int_t ngx_mail_add_addrs(ngx_conf_t *cf, ngx_mail_port_t *mport, |
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19 ngx_mail_conf_addr_t *addr); |
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20 #if (NGX_HAVE_INET6) |
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21 static ngx_int_t ngx_mail_add_addrs6(ngx_conf_t *cf, ngx_mail_port_t *mport, |
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22 ngx_mail_conf_addr_t *addr); |
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23 #endif |
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24 static ngx_int_t ngx_mail_cmp_conf_addrs(const void *one, const void *two); |
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25 |
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26 |
1136 | 27 ngx_uint_t ngx_mail_max_module; |
521 | 28 |
29 | |
1136 | 30 static ngx_command_t ngx_mail_commands[] = { |
31 | |
32 { ngx_string("mail"), | |
33 NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS, | |
34 ngx_mail_block, | |
35 0, | |
36 0, | |
37 NULL }, | |
413
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38 |
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39 ngx_null_command |
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40 }; |
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41 |
577 | 42 |
1136 | 43 static ngx_core_module_t ngx_mail_module_ctx = { |
44 ngx_string("mail"), | |
413
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45 NULL, |
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46 NULL |
577 | 47 }; |
413
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48 |
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49 |
1136 | 50 ngx_module_t ngx_mail_module = { |
509 | 51 NGX_MODULE_V1, |
1136 | 52 &ngx_mail_module_ctx, /* module context */ |
53 ngx_mail_commands, /* module directives */ | |
413
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54 NGX_CORE_MODULE, /* module type */ |
541 | 55 NULL, /* init master */ |
413
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56 NULL, /* init module */ |
541 | 57 NULL, /* init process */ |
58 NULL, /* init thread */ | |
59 NULL, /* exit thread */ | |
60 NULL, /* exit process */ | |
61 NULL, /* exit master */ | |
62 NGX_MODULE_V1_PADDING | |
413
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63 }; |
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64 |
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65 |
521 | 66 static char * |
1136 | 67 ngx_mail_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
417
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68 { |
521 | 69 char *rv; |
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70 ngx_uint_t i, m, mi, s; |
521 | 71 ngx_conf_t pcf; |
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72 ngx_array_t ports; |
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73 ngx_mail_listen_t *listen; |
1136 | 74 ngx_mail_module_t *module; |
75 ngx_mail_conf_ctx_t *ctx; | |
76 ngx_mail_core_srv_conf_t **cscfp; | |
77 ngx_mail_core_main_conf_t *cmcf; | |
521 | 78 |
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79 if (*(ngx_mail_conf_ctx_t **) conf) { |
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80 return "is duplicate"; |
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81 } |
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82 |
1136 | 83 /* the main mail context */ |
84 | |
85 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_mail_conf_ctx_t)); | |
521 | 86 if (ctx == NULL) { |
87 return NGX_CONF_ERROR; | |
88 } | |
89 | |
1136 | 90 *(ngx_mail_conf_ctx_t **) conf = ctx; |
521 | 91 |
5978 | 92 /* count the number of the mail modules and set up their indices */ |
417
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93 |
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94 ngx_mail_max_module = ngx_count_modules(cf->cycle, NGX_MAIL_MODULE); |
521 | 95 |
96 | |
1136 | 97 /* the mail main_conf context, it is the same in the all mail contexts */ |
417
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98 |
521 | 99 ctx->main_conf = ngx_pcalloc(cf->pool, |
1136 | 100 sizeof(void *) * ngx_mail_max_module); |
521 | 101 if (ctx->main_conf == NULL) { |
102 return NGX_CONF_ERROR; | |
103 } | |
104 | |
105 | |
106 /* | |
1136 | 107 * the mail null srv_conf context, it is used to merge |
521 | 108 * the server{}s' srv_conf's |
109 */ | |
110 | |
1136 | 111 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_mail_max_module); |
521 | 112 if (ctx->srv_conf == NULL) { |
417
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113 return NGX_CONF_ERROR; |
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114 } |
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115 |
521 | 116 |
117 /* | |
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118 * create the main_conf's and the null srv_conf's of the all mail modules |
521 | 119 */ |
120 | |
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121 for (m = 0; cf->cycle->modules[m]; m++) { |
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122 if (cf->cycle->modules[m]->type != NGX_MAIL_MODULE) { |
521 | 123 continue; |
124 } | |
125 | |
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126 module = cf->cycle->modules[m]->ctx; |
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127 mi = cf->cycle->modules[m]->ctx_index; |
521 | 128 |
129 if (module->create_main_conf) { | |
130 ctx->main_conf[mi] = module->create_main_conf(cf); | |
131 if (ctx->main_conf[mi] == NULL) { | |
132 return NGX_CONF_ERROR; | |
133 } | |
134 } | |
135 | |
136 if (module->create_srv_conf) { | |
137 ctx->srv_conf[mi] = module->create_srv_conf(cf); | |
138 if (ctx->srv_conf[mi] == NULL) { | |
139 return NGX_CONF_ERROR; | |
140 } | |
141 } | |
142 } | |
143 | |
144 | |
1136 | 145 /* parse inside the mail{} block */ |
521 | 146 |
147 pcf = *cf; | |
148 cf->ctx = ctx; | |
149 | |
1136 | 150 cf->module_type = NGX_MAIL_MODULE; |
151 cf->cmd_type = NGX_MAIL_MAIN_CONF; | |
521 | 152 rv = ngx_conf_parse(cf, NULL); |
153 | |
154 if (rv != NGX_CONF_OK) { | |
155 *cf = pcf; | |
156 return rv; | |
157 } | |
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158 |
521 | 159 |
1136 | 160 /* init mail{} main_conf's, merge the server{}s' srv_conf's */ |
521 | 161 |
1136 | 162 cmcf = ctx->main_conf[ngx_mail_core_module.ctx_index]; |
521 | 163 cscfp = cmcf->servers.elts; |
164 | |
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165 for (m = 0; cf->cycle->modules[m]; m++) { |
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166 if (cf->cycle->modules[m]->type != NGX_MAIL_MODULE) { |
521 | 167 continue; |
168 } | |
169 | |
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170 module = cf->cycle->modules[m]->ctx; |
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171 mi = cf->cycle->modules[m]->ctx_index; |
521 | 172 |
1136 | 173 /* init mail{} main_conf's */ |
521 | 174 |
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175 cf->ctx = ctx; |
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176 |
521 | 177 if (module->init_main_conf) { |
577 | 178 rv = module->init_main_conf(cf, ctx->main_conf[mi]); |
521 | 179 if (rv != NGX_CONF_OK) { |
180 *cf = pcf; | |
181 return rv; | |
182 } | |
183 } | |
184 | |
185 for (s = 0; s < cmcf->servers.nelts; s++) { | |
577 | 186 |
521 | 187 /* merge the server{}s' srv_conf's */ |
577 | 188 |
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189 cf->ctx = cscfp[s]->ctx; |
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190 |
521 | 191 if (module->merge_srv_conf) { |
192 rv = module->merge_srv_conf(cf, | |
193 ctx->srv_conf[mi], | |
194 cscfp[s]->ctx->srv_conf[mi]); | |
195 if (rv != NGX_CONF_OK) { | |
196 *cf = pcf; | |
197 return rv; | |
198 } | |
199 } | |
200 } | |
201 } | |
202 | |
577 | 203 *cf = pcf; |
417
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204 |
641 | 205 |
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206 if (ngx_array_init(&ports, cf->temp_pool, 4, sizeof(ngx_mail_conf_port_t)) |
641 | 207 != NGX_OK) |
208 { | |
209 return NGX_CONF_ERROR; | |
210 } | |
211 | |
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212 listen = cmcf->listen.elts; |
641 | 213 |
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214 for (i = 0; i < cmcf->listen.nelts; i++) { |
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215 if (ngx_mail_add_ports(cf, &ports, &listen[i]) != NGX_OK) { |
641 | 216 return NGX_CONF_ERROR; |
217 } | |
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218 } |
641 | 219 |
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220 return ngx_mail_optimize_servers(cf, &ports); |
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221 } |
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222 |
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223 |
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224 static ngx_int_t |
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225 ngx_mail_add_ports(ngx_conf_t *cf, ngx_array_t *ports, |
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226 ngx_mail_listen_t *listen) |
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227 { |
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228 in_port_t p; |
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229 ngx_uint_t i; |
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230 struct sockaddr *sa; |
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231 ngx_mail_conf_port_t *port; |
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232 ngx_mail_conf_addr_t *addr; |
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233 |
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234 sa = &listen->sockaddr.sockaddr; |
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235 p = ngx_inet_get_port(sa); |
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236 |
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237 port = ports->elts; |
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238 for (i = 0; i < ports->nelts; i++) { |
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239 if (p == port[i].port && sa->sa_family == port[i].family) { |
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240 |
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241 /* a port is already in the port list */ |
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242 |
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243 port = &port[i]; |
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244 goto found; |
641 | 245 } |
246 } | |
247 | |
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248 /* add a port to the port list */ |
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249 |
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250 port = ngx_array_push(ports); |
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251 if (port == NULL) { |
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252 return NGX_ERROR; |
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253 } |
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254 |
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255 port->family = sa->sa_family; |
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256 port->port = p; |
641 | 257 |
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258 if (ngx_array_init(&port->addrs, cf->temp_pool, 2, |
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259 sizeof(ngx_mail_conf_addr_t)) |
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260 != NGX_OK) |
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261 { |
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262 return NGX_ERROR; |
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263 } |
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264 |
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265 found: |
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266 |
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267 addr = ngx_array_push(&port->addrs); |
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268 if (addr == NULL) { |
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269 return NGX_ERROR; |
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270 } |
641 | 271 |
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272 addr->opt = *listen; |
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273 |
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274 return NGX_OK; |
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275 } |
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276 |
641 | 277 |
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278 static char * |
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279 ngx_mail_optimize_servers(ngx_conf_t *cf, ngx_array_t *ports) |
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280 { |
6130 | 281 ngx_uint_t i, p, last, bind_wildcard; |
282 ngx_listening_t *ls; | |
283 ngx_mail_port_t *mport; | |
284 ngx_mail_conf_port_t *port; | |
285 ngx_mail_conf_addr_t *addr; | |
286 ngx_mail_core_srv_conf_t *cscf; | |
641 | 287 |
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288 port = ports->elts; |
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289 for (p = 0; p < ports->nelts; p++) { |
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290 |
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291 ngx_sort(port[p].addrs.elts, (size_t) port[p].addrs.nelts, |
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292 sizeof(ngx_mail_conf_addr_t), ngx_mail_cmp_conf_addrs); |
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293 |
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294 addr = port[p].addrs.elts; |
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295 last = port[p].addrs.nelts; |
641 | 296 |
297 /* | |
298 * if there is the binding to the "*:port" then we need to bind() | |
299 * to the "*:port" only and ignore the other bindings | |
300 */ | |
301 | |
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302 if (addr[last - 1].opt.wildcard) { |
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303 addr[last - 1].opt.bind = 1; |
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304 bind_wildcard = 1; |
641 | 305 |
306 } else { | |
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307 bind_wildcard = 0; |
641 | 308 } |
309 | |
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310 i = 0; |
641 | 311 |
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312 while (i < last) { |
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313 |
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314 if (bind_wildcard && !addr[i].opt.bind) { |
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315 i++; |
641 | 316 continue; |
317 } | |
318 | |
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319 ls = ngx_create_listening(cf, &addr[i].opt.sockaddr.sockaddr, |
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320 addr[i].opt.socklen); |
641 | 321 if (ls == NULL) { |
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322 return NGX_CONF_ERROR; |
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323 } |
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324 |
641 | 325 ls->addr_ntop = 1; |
1136 | 326 ls->handler = ngx_mail_init_connection; |
641 | 327 ls->pool_size = 256; |
328 | |
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329 cscf = addr->opt.ctx->srv_conf[ngx_mail_core_module.ctx_index]; |
6130 | 330 |
331 ls->logp = cscf->error_log; | |
641 | 332 ls->log.data = &ls->addr_text; |
333 ls->log.handler = ngx_accept_log_error; | |
334 | |
6173 | 335 ls->backlog = addr[i].opt.backlog; |
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336 ls->rcvbuf = addr[i].opt.rcvbuf; |
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337 ls->sndbuf = addr[i].opt.sndbuf; |
6173 | 338 |
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339 ls->keepalive = addr[i].opt.so_keepalive; |
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340 #if (NGX_HAVE_KEEPALIVE_TUNABLE) |
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341 ls->keepidle = addr[i].opt.tcp_keepidle; |
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342 ls->keepintvl = addr[i].opt.tcp_keepintvl; |
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343 ls->keepcnt = addr[i].opt.tcp_keepcnt; |
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344 #endif |
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345 |
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346 #if (NGX_HAVE_INET6) |
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347 ls->ipv6only = addr[i].opt.ipv6only; |
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348 #endif |
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349 |
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350 mport = ngx_palloc(cf->pool, sizeof(ngx_mail_port_t)); |
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351 if (mport == NULL) { |
641 | 352 return NGX_CONF_ERROR; |
353 } | |
354 | |
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355 ls->servers = mport; |
641 | 356 |
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357 mport->naddrs = i + 1; |
641 | 358 |
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359 switch (ls->sockaddr->sa_family) { |
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360 #if (NGX_HAVE_INET6) |
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361 case AF_INET6: |
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362 if (ngx_mail_add_addrs6(cf, mport, addr) != NGX_OK) { |
641 | 363 return NGX_CONF_ERROR; |
364 } | |
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365 break; |
2224 | 366 #endif |
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367 default: /* AF_INET */ |
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368 if (ngx_mail_add_addrs(cf, mport, addr) != NGX_OK) { |
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369 return NGX_CONF_ERROR; |
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370 } |
641 | 371 break; |
372 } | |
373 | |
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374 addr++; |
641 | 375 last--; |
376 } | |
377 } | |
378 | |
417
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379 return NGX_CONF_OK; |
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380 } |
641 | 381 |
382 | |
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383 static ngx_int_t |
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384 ngx_mail_add_addrs(ngx_conf_t *cf, ngx_mail_port_t *mport, |
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385 ngx_mail_conf_addr_t *addr) |
641 | 386 { |
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387 u_char *p; |
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388 size_t len; |
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389 ngx_uint_t i; |
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390 ngx_mail_in_addr_t *addrs; |
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391 struct sockaddr_in *sin; |
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392 u_char buf[NGX_SOCKADDR_STRLEN]; |
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393 |
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394 mport->addrs = ngx_pcalloc(cf->pool, |
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395 mport->naddrs * sizeof(ngx_mail_in_addr_t)); |
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396 if (mport->addrs == NULL) { |
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397 return NGX_ERROR; |
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398 } |
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399 |
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400 addrs = mport->addrs; |
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401 |
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402 for (i = 0; i < mport->naddrs; i++) { |
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403 |
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Renamed "u" to "sockaddr" in listen options types.
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404 sin = &addr[i].opt.sockaddr.sockaddr_in; |
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405 addrs[i].addr = sin->sin_addr.s_addr; |
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406 |
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407 addrs[i].conf.ctx = addr[i].opt.ctx; |
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408 #if (NGX_MAIL_SSL) |
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409 addrs[i].conf.ssl = addr[i].opt.ssl; |
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410 #endif |
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411 |
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412 len = ngx_sock_ntop(&addr[i].opt.sockaddr.sockaddr, addr[i].opt.socklen, |
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413 buf, NGX_SOCKADDR_STRLEN, 1); |
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414 |
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415 p = ngx_pnalloc(cf->pool, len); |
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416 if (p == NULL) { |
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417 return NGX_ERROR; |
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418 } |
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419 |
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420 ngx_memcpy(p, buf, len); |
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421 |
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422 addrs[i].conf.addr_text.len = len; |
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423 addrs[i].conf.addr_text.data = p; |
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424 } |
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425 |
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426 return NGX_OK; |
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427 } |
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428 |
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429 |
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430 #if (NGX_HAVE_INET6) |
641 | 431 |
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432 static ngx_int_t |
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433 ngx_mail_add_addrs6(ngx_conf_t *cf, ngx_mail_port_t *mport, |
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434 ngx_mail_conf_addr_t *addr) |
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435 { |
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436 u_char *p; |
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437 size_t len; |
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438 ngx_uint_t i; |
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439 ngx_mail_in6_addr_t *addrs6; |
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440 struct sockaddr_in6 *sin6; |
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441 u_char buf[NGX_SOCKADDR_STRLEN]; |
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442 |
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443 mport->addrs = ngx_pcalloc(cf->pool, |
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444 mport->naddrs * sizeof(ngx_mail_in6_addr_t)); |
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445 if (mport->addrs == NULL) { |
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446 return NGX_ERROR; |
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447 } |
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448 |
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449 addrs6 = mport->addrs; |
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450 |
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451 for (i = 0; i < mport->naddrs; i++) { |
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452 |
6560
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Renamed "u" to "sockaddr" in listen options types.
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453 sin6 = &addr[i].opt.sockaddr.sockaddr_in6; |
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454 addrs6[i].addr6 = sin6->sin6_addr; |
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455 |
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456 addrs6[i].conf.ctx = addr[i].opt.ctx; |
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457 #if (NGX_MAIL_SSL) |
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458 addrs6[i].conf.ssl = addr[i].opt.ssl; |
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459 #endif |
641 | 460 |
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461 len = ngx_sock_ntop(&addr[i].opt.sockaddr.sockaddr, addr[i].opt.socklen, |
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Renamed "u" to "sockaddr" in listen options types.
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462 buf, NGX_SOCKADDR_STRLEN, 1); |
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463 |
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464 p = ngx_pnalloc(cf->pool, len); |
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465 if (p == NULL) { |
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466 return NGX_ERROR; |
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467 } |
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468 |
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469 ngx_memcpy(p, buf, len); |
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470 |
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471 addrs6[i].conf.addr_text.len = len; |
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472 addrs6[i].conf.addr_text.data = p; |
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473 } |
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|
474 |
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|
475 return NGX_OK; |
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|
476 } |
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|
477 |
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478 #endif |
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|
479 |
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|
480 |
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|
481 static ngx_int_t |
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482 ngx_mail_cmp_conf_addrs(const void *one, const void *two) |
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483 { |
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|
484 ngx_mail_conf_addr_t *first, *second; |
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|
485 |
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|
486 first = (ngx_mail_conf_addr_t *) one; |
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487 second = (ngx_mail_conf_addr_t *) two; |
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|
488 |
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|
489 if (first->opt.wildcard) { |
2855
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490 /* a wildcard must be the last resort, shift it to the end */ |
641 | 491 return 1; |
492 } | |
493 | |
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|
494 if (second->opt.wildcard) { |
4817
d794e59800ef
Mail: fixed sorting of listen addresses (ticket #187).
Ruslan Ermilov <ru@nginx.com>
parents:
4412
diff
changeset
|
495 /* a wildcard must be the last resort, shift it to the end */ |
d794e59800ef
Mail: fixed sorting of listen addresses (ticket #187).
Ruslan Ermilov <ru@nginx.com>
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diff
changeset
|
496 return -1; |
d794e59800ef
Mail: fixed sorting of listen addresses (ticket #187).
Ruslan Ermilov <ru@nginx.com>
parents:
4412
diff
changeset
|
497 } |
d794e59800ef
Mail: fixed sorting of listen addresses (ticket #187).
Ruslan Ermilov <ru@nginx.com>
parents:
4412
diff
changeset
|
498 |
6171
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Mail: embed ngx_mail_listen_t into ngx_mail_conf_addr_t.
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|
499 if (first->opt.bind && !second->opt.bind) { |
641 | 500 /* shift explicit bind()ed addresses to the start */ |
501 return -1; | |
502 } | |
503 | |
6171
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|
504 if (!first->opt.bind && second->opt.bind) { |
641 | 505 /* shift explicit bind()ed addresses to the start */ |
506 return 1; | |
507 } | |
508 | |
509 /* do not sort by default */ | |
510 | |
511 return 0; | |
512 } |