Mercurial > hg > nginx
annotate src/mail/ngx_mail_smtp_module.c @ 3992:a1dd9dc754ab
A new fix for the case when ssl_session_cache defined, but ssl is not
enabled in any server. The previous r1033 does not help when unused zone
becomes used after reconfiguration, so it is backed out.
The initial thought was to make SSL modules independed from SSL implementation
and to keep OpenSSL code dependance as much as in separate files.
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Thu, 04 Aug 2011 11:12:30 +0000 |
parents | 8156bc03982a |
children | d620f497c50f |
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> |
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11 #include <ngx_mail_smtp_module.h> |
521 | 12 |
13 | |
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14 static void *ngx_mail_smtp_create_srv_conf(ngx_conf_t *cf); |
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15 static char *ngx_mail_smtp_merge_srv_conf(ngx_conf_t *cf, void *parent, |
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16 void *child); |
527 | 17 |
18 | |
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19 static ngx_conf_bitmask_t ngx_mail_smtp_auth_methods[] = { |
1323 | 20 { ngx_string("plain"), NGX_MAIL_AUTH_PLAIN_ENABLED }, |
21 { ngx_string("login"), NGX_MAIL_AUTH_LOGIN_ENABLED }, | |
22 { ngx_string("cram-md5"), NGX_MAIL_AUTH_CRAM_MD5_ENABLED }, | |
2309 | 23 { ngx_string("none"), NGX_MAIL_AUTH_NONE_ENABLED }, |
1323 | 24 { ngx_null_string, 0 } |
25 }; | |
26 | |
27 | |
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28 static ngx_str_t ngx_mail_smtp_auth_methods_names[] = { |
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29 ngx_string("PLAIN"), |
1136 | 30 ngx_string("LOGIN"), |
31 ngx_null_string, /* APOP */ | |
2309 | 32 ngx_string("CRAM-MD5"), |
33 ngx_null_string /* NONE */ | |
1136 | 34 }; |
35 | |
36 | |
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37 static ngx_mail_protocol_t ngx_mail_smtp_protocol = { |
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38 ngx_string("smtp"), |
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39 { 25, 465, 587, 0 }, |
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40 NGX_MAIL_SMTP_PROTOCOL, |
809 | 41 |
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42 ngx_mail_smtp_init_session, |
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43 ngx_mail_smtp_init_protocol, |
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44 ngx_mail_smtp_parse_command, |
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45 ngx_mail_smtp_auth_state, |
809 | 46 |
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47 ngx_string("451 4.3.2 Internal server error" CRLF) |
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48 }; |
809 | 49 |
50 | |
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51 static ngx_command_t ngx_mail_smtp_commands[] = { |
521 | 52 |
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53 { ngx_string("smtp_client_buffer"), |
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54 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1, |
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55 ngx_conf_set_size_slot, |
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56 NGX_MAIL_SRV_CONF_OFFSET, |
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57 offsetof(ngx_mail_smtp_srv_conf_t, client_buffer_size), |
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58 NULL }, |
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59 |
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60 { ngx_string("smtp_greeting_delay"), |
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61 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1, |
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62 ngx_conf_set_msec_slot, |
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63 NGX_MAIL_SRV_CONF_OFFSET, |
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64 offsetof(ngx_mail_smtp_srv_conf_t, greeting_delay), |
1136 | 65 NULL }, |
66 | |
67 { ngx_string("smtp_capabilities"), | |
68 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, | |
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69 ngx_mail_capabilities, |
1136 | 70 NGX_MAIL_SRV_CONF_OFFSET, |
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71 offsetof(ngx_mail_smtp_srv_conf_t, capabilities), |
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72 NULL }, |
1323 | 73 |
1136 | 74 { ngx_string("smtp_auth"), |
75 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, | |
76 ngx_conf_set_bitmask_slot, | |
77 NGX_MAIL_SRV_CONF_OFFSET, | |
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78 offsetof(ngx_mail_smtp_srv_conf_t, auth_methods), |
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79 &ngx_mail_smtp_auth_methods }, |
800 | 80 |
521 | 81 ngx_null_command |
82 }; | |
83 | |
84 | |
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85 static ngx_mail_module_t ngx_mail_smtp_module_ctx = { |
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86 &ngx_mail_smtp_protocol, /* protocol */ |
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87 |
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88 NULL, /* create main configuration */ |
521 | 89 NULL, /* init main configuration */ |
90 | |
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91 ngx_mail_smtp_create_srv_conf, /* create server configuration */ |
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92 ngx_mail_smtp_merge_srv_conf /* merge server configuration */ |
521 | 93 }; |
94 | |
95 | |
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96 ngx_module_t ngx_mail_smtp_module = { |
521 | 97 NGX_MODULE_V1, |
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98 &ngx_mail_smtp_module_ctx, /* module context */ |
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99 ngx_mail_smtp_commands, /* module directives */ |
1136 | 100 NGX_MAIL_MODULE, /* module type */ |
541 | 101 NULL, /* init master */ |
521 | 102 NULL, /* init module */ |
541 | 103 NULL, /* init process */ |
104 NULL, /* init thread */ | |
105 NULL, /* exit thread */ | |
106 NULL, /* exit process */ | |
107 NULL, /* exit master */ | |
108 NGX_MODULE_V1_PADDING | |
521 | 109 }; |
110 | |
111 | |
112 static void * | |
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113 ngx_mail_smtp_create_srv_conf(ngx_conf_t *cf) |
577 | 114 { |
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115 ngx_mail_smtp_srv_conf_t *sscf; |
641 | 116 |
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117 sscf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_smtp_srv_conf_t)); |
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118 if (sscf == NULL) { |
527 | 119 return NULL; |
521 | 120 } |
121 | |
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122 sscf->client_buffer_size = NGX_CONF_UNSET_SIZE; |
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123 sscf->greeting_delay = NGX_CONF_UNSET_MSEC; |
521 | 124 |
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125 if (ngx_array_init(&sscf->capabilities, cf->pool, 4, sizeof(ngx_str_t)) |
1136 | 126 != NGX_OK) |
127 { | |
128 return NULL; | |
129 } | |
130 | |
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131 return sscf; |
521 | 132 } |
133 | |
134 | |
135 static char * | |
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136 ngx_mail_smtp_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) |
521 | 137 { |
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138 ngx_mail_smtp_srv_conf_t *prev = parent; |
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139 ngx_mail_smtp_srv_conf_t *conf = child; |
521 | 140 |
2309 | 141 u_char *p, *auth, *last; |
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142 size_t size; |
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143 ngx_str_t *c; |
2309 | 144 ngx_uint_t i, m, auth_enabled; |
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145 ngx_mail_core_srv_conf_t *cscf; |
527 | 146 |
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147 ngx_conf_merge_size_value(conf->client_buffer_size, |
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148 prev->client_buffer_size, |
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149 (size_t) ngx_pagesize); |
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150 |
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151 ngx_conf_merge_msec_value(conf->greeting_delay, |
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152 prev->greeting_delay, 0); |
521 | 153 |
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154 ngx_conf_merge_bitmask_value(conf->auth_methods, |
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155 prev->auth_methods, |
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156 (NGX_CONF_BITMASK_SET |
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157 |NGX_MAIL_AUTH_PLAIN_ENABLED |
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158 |NGX_MAIL_AUTH_LOGIN_ENABLED)); |
800 | 159 |
160 | |
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161 cscf = ngx_mail_conf_get_module_srv_conf(cf, ngx_mail_core_module); |
527 | 162 |
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163 size = sizeof("220 ESMTP ready" CRLF) - 1 + cscf->server_name.len; |
809 | 164 |
2049 | 165 p = ngx_pnalloc(cf->pool, size); |
583 | 166 if (p == NULL) { |
527 | 167 return NGX_CONF_ERROR; |
168 } | |
169 | |
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170 conf->greeting.len = size; |
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171 conf->greeting.data = p; |
527 | 172 |
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173 *p++ = '2'; *p++ = '2'; *p++ = '0'; *p++ = ' '; |
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174 p = ngx_cpymem(p, cscf->server_name.data, cscf->server_name.len); |
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175 ngx_memcpy(p, " ESMTP ready" CRLF, sizeof(" ESMTP ready" CRLF) - 1); |
583 | 176 |
177 | |
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178 size = sizeof("250 " CRLF) - 1 + cscf->server_name.len; |
527 | 179 |
2049 | 180 p = ngx_pnalloc(cf->pool, size); |
583 | 181 if (p == NULL) { |
182 return NGX_CONF_ERROR; | |
183 } | |
184 | |
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185 conf->server_name.len = size; |
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186 conf->server_name.data = p; |
583 | 187 |
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188 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = ' '; |
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189 p = ngx_cpymem(p, cscf->server_name.data, cscf->server_name.len); |
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190 *p++ = CR; *p = LF; |
527 | 191 |
192 | |
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193 if (conf->capabilities.nelts == 0) { |
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194 conf->capabilities = prev->capabilities; |
1136 | 195 } |
196 | |
2309 | 197 size = sizeof("250-") - 1 + cscf->server_name.len + sizeof(CRLF) - 1; |
1136 | 198 |
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199 c = conf->capabilities.elts; |
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200 for (i = 0; i < conf->capabilities.nelts; i++) { |
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201 size += sizeof("250 ") - 1 + c[i].len + sizeof(CRLF) - 1; |
527 | 202 } |
203 | |
2309 | 204 auth_enabled = 0; |
205 | |
1323 | 206 for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0; |
207 m <= NGX_MAIL_AUTH_CRAM_MD5_ENABLED; | |
208 m <<= 1, i++) | |
209 { | |
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210 if (m & conf->auth_methods) { |
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211 size += 1 + ngx_mail_smtp_auth_methods_names[i].len; |
2309 | 212 auth_enabled = 1; |
1323 | 213 } |
214 } | |
215 | |
2309 | 216 if (auth_enabled) { |
217 size += sizeof("250 AUTH") - 1 + sizeof(CRLF) - 1; | |
218 } | |
219 | |
2049 | 220 p = ngx_pnalloc(cf->pool, size); |
583 | 221 if (p == NULL) { |
222 return NGX_CONF_ERROR; | |
223 } | |
224 | |
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225 conf->capability.len = size; |
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226 conf->capability.data = p; |
1136 | 227 |
2309 | 228 last = p; |
229 | |
1136 | 230 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = '-'; |
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231 p = ngx_cpymem(p, cscf->server_name.data, cscf->server_name.len); |
1136 | 232 *p++ = CR; *p++ = LF; |
233 | |
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234 for (i = 0; i < conf->capabilities.nelts; i++) { |
2309 | 235 last = p; |
1136 | 236 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = '-'; |
237 p = ngx_cpymem(p, c[i].data, c[i].len); | |
238 *p++ = CR; *p++ = LF; | |
239 } | |
240 | |
1322 | 241 auth = p; |
242 | |
2309 | 243 if (auth_enabled) { |
244 last = p; | |
245 | |
246 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = ' '; | |
247 *p++ = 'A'; *p++ = 'U'; *p++ = 'T'; *p++ = 'H'; | |
1136 | 248 |
2309 | 249 for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0; |
250 m <= NGX_MAIL_AUTH_CRAM_MD5_ENABLED; | |
251 m <<= 1, i++) | |
252 { | |
253 if (m & conf->auth_methods) { | |
254 *p++ = ' '; | |
255 p = ngx_cpymem(p, ngx_mail_smtp_auth_methods_names[i].data, | |
256 ngx_mail_smtp_auth_methods_names[i].len); | |
257 } | |
1136 | 258 } |
2309 | 259 |
260 *p++ = CR; *p = LF; | |
1136 | 261 |
2309 | 262 } else { |
263 last[3] = ' '; | |
264 } | |
1136 | 265 |
1322 | 266 size += sizeof("250 STARTTLS" CRLF) - 1; |
267 | |
2049 | 268 p = ngx_pnalloc(cf->pool, size); |
1322 | 269 if (p == NULL) { |
270 return NGX_CONF_ERROR; | |
271 } | |
272 | |
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273 conf->starttls_capability.len = size; |
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274 conf->starttls_capability.data = p; |
1322 | 275 |
2309 | 276 p = ngx_cpymem(p, conf->capability.data, conf->capability.len); |
1322 | 277 |
278 p = ngx_cpymem(p, "250 STARTTLS" CRLF, sizeof("250 STARTTLS" CRLF) - 1); | |
279 *p++ = CR; *p = LF; | |
280 | |
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281 p = conf->starttls_capability.data |
2309 | 282 + (last - conf->capability.data) + 3; |
1322 | 283 *p = '-'; |
284 | |
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285 size = (auth - conf->capability.data) |
1322 | 286 + sizeof("250 STARTTLS" CRLF) - 1; |
287 | |
2049 | 288 p = ngx_pnalloc(cf->pool, size); |
1322 | 289 if (p == NULL) { |
290 return NGX_CONF_ERROR; | |
291 } | |
292 | |
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293 conf->starttls_only_capability.len = size; |
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294 conf->starttls_only_capability.data = p; |
1322 | 295 |
2309 | 296 p = ngx_cpymem(p, conf->capability.data, auth - conf->capability.data); |
1322 | 297 |
298 ngx_memcpy(p, "250 STARTTLS" CRLF, sizeof("250 STARTTLS" CRLF) - 1); | |
299 | |
2309 | 300 if (last < auth) { |
301 p = conf->starttls_only_capability.data | |
302 + (last - conf->capability.data) + 3; | |
303 *p = '-'; | |
304 } | |
305 | |
521 | 306 return NGX_CONF_OK; |
307 } |