Mercurial > hg > nginx-mail
annotate src/mail/ngx_mail_core_module.c @ 400:f1e2fab7a46c
Mail: smtp proxy without authentication.
Activated by auth method "unauth" in smtp_auth directive.
Waits for MAIL FROM and first RCPT TO from client, asks auth_http for
backend with additional headers Auth-SMTP-Helo, Auth-SMTP-From,
Auth-SMTP-To, and establishes connection to backend.
Auth-SMTP-From/To currently contain full command (e.g. "mail from: <>"),
this may change in future.
The functionality was designed to take off load from real smtp servers.
Additionally it may be used to implement pop-before-smtp authentication
(but dont do it unless you really need it - use real auth instead).
Current bug-features:
- If only "unauth" method activated in config, other methods (e.g. plain,
login) not advertised but accepted. Make sure your auth server handles
this gracefully.
- If backend server returns error on MAIL FROM / RCPT TO command while
proxy tunnel setup, nginx will close connection to client with 4xx
error. One may use proxy_pass_error_message directive to pass original
error message to client.
- Syntax of MAIL FROM / RCPT TO commands from client isn't checked.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Sun, 22 Jul 2007 23:55:12 +0000 |
| parents | f9e6413396d4 |
| children | d4cac61d8e95 |
| rev | line source |
|---|---|
| 290 | 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> | |
| 10 #include <ngx_mail.h> | |
| 11 | |
| 12 | |
| 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, | |
| 16 void *child); | |
| 17 static char *ngx_mail_core_server(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 18 void *conf); | |
| 19 static char *ngx_mail_core_listen(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 20 void *conf); | |
| 21 static char *ngx_mail_core_capability(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 22 void *conf); | |
| 23 | |
| 24 | |
| 25 static ngx_conf_enum_t ngx_mail_core_procotol[] = { | |
| 26 { ngx_string("pop3"), NGX_MAIL_POP3_PROTOCOL }, | |
| 27 { ngx_string("imap"), NGX_MAIL_IMAP_PROTOCOL }, | |
| 28 { ngx_string("smtp"), NGX_MAIL_SMTP_PROTOCOL }, | |
| 29 { ngx_null_string, 0 } | |
| 30 }; | |
| 31 | |
| 32 | |
| 33 static ngx_str_t ngx_pop3_default_capabilities[] = { | |
| 34 ngx_string("TOP"), | |
| 35 ngx_string("USER"), | |
| 36 ngx_string("UIDL"), | |
| 37 ngx_null_string | |
| 38 }; | |
| 39 | |
| 40 | |
| 41 static ngx_str_t ngx_imap_default_capabilities[] = { | |
| 42 ngx_string("IMAP4"), | |
| 43 ngx_string("IMAP4rev1"), | |
| 44 ngx_string("UIDPLUS"), | |
| 45 ngx_null_string | |
| 46 }; | |
| 47 | |
| 48 | |
| 49 static ngx_conf_bitmask_t ngx_pop3_auth_methods[] = { | |
| 50 { ngx_string("plain"), NGX_MAIL_AUTH_PLAIN_ENABLED }, | |
| 51 { ngx_string("apop"), NGX_MAIL_AUTH_APOP_ENABLED }, | |
| 52 { ngx_string("cram-md5"), NGX_MAIL_AUTH_CRAM_MD5_ENABLED }, | |
| 53 { ngx_null_string, 0 } | |
| 54 }; | |
| 55 | |
| 56 | |
|
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57 static ngx_conf_bitmask_t ngx_imap_auth_methods[] = { |
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58 { ngx_string("plain"), NGX_MAIL_AUTH_PLAIN_ENABLED }, |
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59 { ngx_string("login"), NGX_MAIL_AUTH_LOGIN_ENABLED }, |
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60 { ngx_string("cram-md5"), NGX_MAIL_AUTH_CRAM_MD5_ENABLED }, |
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61 { ngx_null_string, 0 } |
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62 }; |
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63 |
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64 |
| 290 | 65 static ngx_conf_bitmask_t ngx_smtp_auth_methods[] = { |
| 66 { ngx_string("plain"), NGX_MAIL_AUTH_PLAIN_ENABLED }, | |
| 67 { ngx_string("login"), NGX_MAIL_AUTH_LOGIN_ENABLED }, | |
| 68 { ngx_string("cram-md5"), NGX_MAIL_AUTH_CRAM_MD5_ENABLED }, | |
|
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69 { ngx_string("unauth"), NGX_MAIL_AUTH_UNAUTH_ENABLED }, |
| 290 | 70 { ngx_null_string, 0 } |
| 71 }; | |
| 72 | |
| 73 | |
|
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74 static ngx_str_t ngx_imap_auth_methods_names[] = { |
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75 ngx_string("AUTH=PLAIN"), |
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76 ngx_string("AUTH=LOGIN"), |
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77 ngx_null_string, /* APOP */ |
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Mail: smtp proxy without authentication.
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parents:
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78 ngx_string("AUTH=CRAM-MD5"), |
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79 ngx_null_string /* UNAUTH */ |
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parents:
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80 }; |
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parents:
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81 |
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82 |
| 290 | 83 static ngx_str_t ngx_smtp_auth_methods_names[] = { |
| 296 | 84 ngx_string("PLAIN"), |
| 290 | 85 ngx_string("LOGIN"), |
| 86 ngx_null_string, /* APOP */ | |
|
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Mail: smtp proxy without authentication.
Maxim Dounin <mdounin@mdounin.ru>
parents:
398
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87 ngx_string("CRAM-MD5"), |
|
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Mail: smtp proxy without authentication.
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parents:
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diff
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88 ngx_null_string /* UNAUTH */ |
| 290 | 89 }; |
| 90 | |
| 91 | |
| 92 static ngx_str_t ngx_pop3_auth_plain_capability = | |
| 93 ngx_string("+OK methods supported:" CRLF | |
| 94 "LOGIN" CRLF | |
| 95 "PLAIN" CRLF | |
| 96 "." CRLF); | |
| 97 | |
| 98 | |
| 99 static ngx_str_t ngx_pop3_auth_cram_md5_capability = | |
| 100 ngx_string("+OK methods supported:" CRLF | |
| 101 "LOGIN" CRLF | |
| 102 "PLAIN" CRLF | |
| 103 "CRAM-MD5" CRLF | |
| 104 "." CRLF); | |
| 105 | |
| 106 | |
| 107 | |
| 108 static ngx_command_t ngx_mail_core_commands[] = { | |
| 109 | |
| 110 { ngx_string("server"), | |
| 111 NGX_MAIL_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS, | |
| 112 ngx_mail_core_server, | |
| 113 0, | |
| 114 0, | |
| 115 NULL }, | |
| 116 | |
| 117 { ngx_string("listen"), | |
| 118 NGX_MAIL_SRV_CONF|NGX_CONF_TAKE12, | |
| 119 ngx_mail_core_listen, | |
| 120 0, | |
| 121 0, | |
| 122 NULL }, | |
| 123 | |
| 124 { ngx_string("protocol"), | |
| 125 NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1, | |
| 126 ngx_conf_set_enum_slot, | |
| 127 NGX_MAIL_SRV_CONF_OFFSET, | |
| 128 offsetof(ngx_mail_core_srv_conf_t, protocol), | |
| 129 &ngx_mail_core_procotol }, | |
| 130 | |
| 131 { ngx_string("imap_client_buffer"), | |
| 132 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1, | |
| 133 ngx_conf_set_size_slot, | |
| 134 NGX_MAIL_SRV_CONF_OFFSET, | |
| 135 offsetof(ngx_mail_core_srv_conf_t, imap_client_buffer_size), | |
| 136 NULL }, | |
| 137 | |
| 138 { ngx_string("so_keepalive"), | |
| 139 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_FLAG, | |
| 140 ngx_conf_set_flag_slot, | |
| 141 NGX_MAIL_SRV_CONF_OFFSET, | |
| 142 offsetof(ngx_mail_core_srv_conf_t, so_keepalive), | |
| 143 NULL }, | |
| 144 | |
| 145 { ngx_string("timeout"), | |
| 146 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1, | |
| 147 ngx_conf_set_msec_slot, | |
| 148 NGX_MAIL_SRV_CONF_OFFSET, | |
| 149 offsetof(ngx_mail_core_srv_conf_t, timeout), | |
| 150 NULL }, | |
| 151 | |
| 152 { ngx_string("pop3_capabilities"), | |
| 153 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, | |
| 154 ngx_mail_core_capability, | |
| 155 NGX_MAIL_SRV_CONF_OFFSET, | |
| 156 offsetof(ngx_mail_core_srv_conf_t, pop3_capabilities), | |
| 157 NULL }, | |
| 158 | |
| 159 { ngx_string("imap_capabilities"), | |
| 160 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, | |
| 161 ngx_mail_core_capability, | |
| 162 NGX_MAIL_SRV_CONF_OFFSET, | |
| 163 offsetof(ngx_mail_core_srv_conf_t, imap_capabilities), | |
| 164 NULL }, | |
| 165 | |
| 166 { ngx_string("smtp_capabilities"), | |
| 167 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, | |
| 168 ngx_mail_core_capability, | |
| 169 NGX_MAIL_SRV_CONF_OFFSET, | |
| 170 offsetof(ngx_mail_core_srv_conf_t, smtp_capabilities), | |
| 171 NULL }, | |
| 172 | |
| 173 { ngx_string("server_name"), | |
| 174 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1, | |
| 175 ngx_conf_set_str_slot, | |
| 176 NGX_MAIL_SRV_CONF_OFFSET, | |
| 177 offsetof(ngx_mail_core_srv_conf_t, server_name), | |
| 178 NULL }, | |
| 179 | |
| 180 { ngx_string("auth"), | |
| 181 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, | |
| 182 ngx_conf_set_bitmask_slot, | |
| 183 NGX_MAIL_SRV_CONF_OFFSET, | |
| 184 offsetof(ngx_mail_core_srv_conf_t, pop3_auth_methods), | |
| 185 &ngx_pop3_auth_methods }, | |
| 186 | |
| 187 { ngx_string("pop3_auth"), | |
| 188 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, | |
| 189 ngx_conf_set_bitmask_slot, | |
| 190 NGX_MAIL_SRV_CONF_OFFSET, | |
| 191 offsetof(ngx_mail_core_srv_conf_t, pop3_auth_methods), | |
| 192 &ngx_pop3_auth_methods }, | |
| 193 | |
|
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Mail: IMAP AUTHENTICATE command support.
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parents:
396
diff
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194 { ngx_string("imap_auth"), |
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195 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, |
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196 ngx_conf_set_bitmask_slot, |
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197 NGX_MAIL_SRV_CONF_OFFSET, |
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198 offsetof(ngx_mail_core_srv_conf_t, imap_auth_methods), |
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199 &ngx_imap_auth_methods }, |
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200 |
| 290 | 201 { ngx_string("smtp_auth"), |
| 202 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, | |
| 203 ngx_conf_set_bitmask_slot, | |
| 204 NGX_MAIL_SRV_CONF_OFFSET, | |
| 205 offsetof(ngx_mail_core_srv_conf_t, smtp_auth_methods), | |
| 206 &ngx_smtp_auth_methods }, | |
| 207 | |
| 208 ngx_null_command | |
| 209 }; | |
| 210 | |
| 211 | |
| 212 static ngx_mail_module_t ngx_mail_core_module_ctx = { | |
| 213 ngx_mail_core_create_main_conf, /* create main configuration */ | |
| 214 NULL, /* init main configuration */ | |
| 215 | |
| 216 ngx_mail_core_create_srv_conf, /* create server configuration */ | |
| 217 ngx_mail_core_merge_srv_conf /* merge server configuration */ | |
| 218 }; | |
| 219 | |
| 220 | |
| 221 ngx_module_t ngx_mail_core_module = { | |
| 222 NGX_MODULE_V1, | |
| 223 &ngx_mail_core_module_ctx, /* module context */ | |
| 224 ngx_mail_core_commands, /* module directives */ | |
| 225 NGX_MAIL_MODULE, /* module type */ | |
| 226 NULL, /* init master */ | |
| 227 NULL, /* init module */ | |
| 228 NULL, /* init process */ | |
| 229 NULL, /* init thread */ | |
| 230 NULL, /* exit thread */ | |
| 231 NULL, /* exit process */ | |
| 232 NULL, /* exit master */ | |
| 233 NGX_MODULE_V1_PADDING | |
| 234 }; | |
| 235 | |
| 236 | |
| 237 static void * | |
| 238 ngx_mail_core_create_main_conf(ngx_conf_t *cf) | |
| 239 { | |
| 240 ngx_mail_core_main_conf_t *cmcf; | |
| 241 | |
| 242 cmcf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_core_main_conf_t)); | |
| 243 if (cmcf == NULL) { | |
| 244 return NGX_CONF_ERROR; | |
| 245 } | |
| 246 | |
| 247 if (ngx_array_init(&cmcf->servers, cf->pool, 4, | |
| 248 sizeof(ngx_mail_core_srv_conf_t *)) | |
| 249 != NGX_OK) | |
| 250 { | |
| 251 return NGX_CONF_ERROR; | |
| 252 } | |
| 253 | |
| 254 if (ngx_array_init(&cmcf->listen, cf->pool, 4, sizeof(ngx_mail_listen_t)) | |
| 255 != NGX_OK) | |
| 256 { | |
| 257 return NGX_CONF_ERROR; | |
| 258 } | |
| 259 | |
| 260 return cmcf; | |
| 261 } | |
| 262 | |
| 263 | |
| 264 static void * | |
| 265 ngx_mail_core_create_srv_conf(ngx_conf_t *cf) | |
| 266 { | |
| 267 ngx_mail_core_srv_conf_t *cscf; | |
| 268 | |
| 269 cscf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_core_srv_conf_t)); | |
| 270 if (cscf == NULL) { | |
| 271 return NULL; | |
| 272 } | |
| 273 | |
| 274 cscf->imap_client_buffer_size = NGX_CONF_UNSET_SIZE; | |
| 275 cscf->protocol = NGX_CONF_UNSET_UINT; | |
| 276 cscf->timeout = NGX_CONF_UNSET_MSEC; | |
| 277 cscf->so_keepalive = NGX_CONF_UNSET; | |
| 278 | |
| 279 if (ngx_array_init(&cscf->pop3_capabilities, cf->pool, 4, sizeof(ngx_str_t)) | |
| 280 != NGX_OK) | |
| 281 { | |
| 282 return NULL; | |
| 283 } | |
| 284 | |
| 285 if (ngx_array_init(&cscf->imap_capabilities, cf->pool, 4, sizeof(ngx_str_t)) | |
| 286 != NGX_OK) | |
| 287 { | |
| 288 return NULL; | |
| 289 } | |
| 290 | |
| 291 if (ngx_array_init(&cscf->smtp_capabilities, cf->pool, 4, sizeof(ngx_str_t)) | |
| 292 != NGX_OK) | |
| 293 { | |
| 294 return NULL; | |
| 295 } | |
| 296 | |
| 297 return cscf; | |
| 298 } | |
| 299 | |
| 300 | |
| 301 static char * | |
| 302 ngx_mail_core_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) | |
| 303 { | |
| 304 ngx_mail_core_srv_conf_t *prev = parent; | |
| 305 ngx_mail_core_srv_conf_t *conf = child; | |
| 306 | |
|
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parents:
398
diff
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307 u_char *p, *auth_p, *last_p; |
| 290 | 308 size_t size, stls_only_size; |
| 309 ngx_str_t *c, *d; | |
|
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parents:
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310 ngx_uint_t i, m, smtp_auth_enabled; |
| 290 | 311 |
| 312 ngx_conf_merge_size_value(conf->imap_client_buffer_size, | |
| 313 prev->imap_client_buffer_size, | |
| 314 (size_t) ngx_pagesize); | |
| 315 ngx_conf_merge_msec_value(conf->timeout, prev->timeout, 60000); | |
| 316 ngx_conf_merge_uint_value(conf->protocol, prev->protocol, | |
| 317 NGX_MAIL_IMAP_PROTOCOL); | |
| 318 ngx_conf_merge_value(conf->so_keepalive, prev->so_keepalive, 0); | |
| 319 | |
| 320 | |
| 321 ngx_conf_merge_bitmask_value(conf->pop3_auth_methods, | |
| 322 prev->pop3_auth_methods, | |
| 323 (NGX_CONF_BITMASK_SET | |
| 324 |NGX_MAIL_AUTH_PLAIN_ENABLED)); | |
| 325 | |
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326 ngx_conf_merge_bitmask_value(conf->imap_auth_methods, |
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f9e6413396d4
Mail: IMAP AUTHENTICATE command support.
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parents:
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327 prev->imap_auth_methods, |
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f9e6413396d4
Mail: IMAP AUTHENTICATE command support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
396
diff
changeset
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328 (NGX_CONF_BITMASK_SET |
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f9e6413396d4
Mail: IMAP AUTHENTICATE command support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
396
diff
changeset
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329 |NGX_MAIL_AUTH_PLAIN_ENABLED)); |
|
f9e6413396d4
Mail: IMAP AUTHENTICATE command support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
396
diff
changeset
|
330 |
| 290 | 331 ngx_conf_merge_bitmask_value(conf->smtp_auth_methods, |
| 332 prev->smtp_auth_methods, | |
| 333 (NGX_CONF_BITMASK_SET | |
| 334 |NGX_MAIL_AUTH_PLAIN_ENABLED | |
| 335 |NGX_MAIL_AUTH_LOGIN_ENABLED)); | |
| 336 | |
| 337 | |
| 338 ngx_conf_merge_str_value(conf->server_name, prev->server_name, ""); | |
| 339 | |
| 340 if (conf->server_name.len == 0) { | |
| 341 conf->server_name.data = ngx_palloc(cf->pool, NGX_MAXHOSTNAMELEN); | |
| 342 if (conf->server_name.data == NULL) { | |
| 343 return NGX_CONF_ERROR; | |
| 344 } | |
| 345 | |
| 346 if (gethostname((char *) conf->server_name.data, NGX_MAXHOSTNAMELEN) | |
| 347 == -1) | |
| 348 { | |
| 349 ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno, | |
| 350 "gethostname() failed"); | |
| 351 return NGX_CONF_ERROR; | |
| 352 } | |
| 353 | |
| 354 conf->server_name.len = ngx_strlen(conf->server_name.data); | |
| 355 } | |
| 356 | |
| 357 | |
| 358 if (conf->pop3_capabilities.nelts == 0) { | |
| 359 conf->pop3_capabilities = prev->pop3_capabilities; | |
| 360 } | |
| 361 | |
| 362 if (conf->pop3_capabilities.nelts == 0) { | |
| 363 | |
| 364 for (d = ngx_pop3_default_capabilities; d->len; d++) { | |
| 365 c = ngx_array_push(&conf->pop3_capabilities); | |
| 366 if (c == NULL) { | |
| 367 return NGX_CONF_ERROR; | |
| 368 } | |
| 369 | |
| 370 *c = *d; | |
| 371 } | |
| 372 } | |
| 373 | |
| 374 size = sizeof("+OK Capability list follows" CRLF) - 1 | |
| 375 + sizeof("." CRLF) - 1; | |
| 376 | |
| 377 stls_only_size = size + sizeof("STLS" CRLF) - 1; | |
| 378 | |
| 379 c = conf->pop3_capabilities.elts; | |
| 380 for (i = 0; i < conf->pop3_capabilities.nelts; i++) { | |
| 381 size += c[i].len + sizeof(CRLF) - 1; | |
| 382 | |
| 383 if (ngx_strcasecmp(c[i].data, (u_char *) "USER") == 0) { | |
| 384 continue; | |
| 385 } | |
| 386 | |
| 387 stls_only_size += c[i].len + sizeof(CRLF) - 1; | |
| 388 } | |
| 389 | |
| 390 if (conf->pop3_auth_methods & NGX_MAIL_AUTH_CRAM_MD5_ENABLED) { | |
| 391 size += sizeof("SASL LOGIN PLAIN CRAM-MD5" CRLF) - 1; | |
| 392 | |
| 393 } else { | |
| 394 size += sizeof("SASL LOGIN PLAIN" CRLF) - 1; | |
| 395 } | |
| 396 | |
| 397 p = ngx_palloc(cf->pool, size); | |
| 398 if (p == NULL) { | |
| 399 return NGX_CONF_ERROR; | |
| 400 } | |
| 401 | |
| 402 conf->pop3_capability.len = size; | |
| 403 conf->pop3_capability.data = p; | |
| 404 | |
| 405 p = ngx_cpymem(p, "+OK Capability list follows" CRLF, | |
| 406 sizeof("+OK Capability list follows" CRLF) - 1); | |
| 407 | |
| 408 for (i = 0; i < conf->pop3_capabilities.nelts; i++) { | |
| 409 p = ngx_cpymem(p, c[i].data, c[i].len); | |
| 410 *p++ = CR; *p++ = LF; | |
| 411 } | |
| 412 | |
| 413 if (conf->pop3_auth_methods & NGX_MAIL_AUTH_CRAM_MD5_ENABLED) { | |
| 414 p = ngx_cpymem(p, "SASL LOGIN PLAIN CRAM-MD5" CRLF, | |
| 415 sizeof("SASL LOGIN PLAIN CRAM-MD5" CRLF) - 1); | |
| 416 | |
| 417 } else { | |
| 418 p = ngx_cpymem(p, "SASL LOGIN PLAIN" CRLF, | |
| 419 sizeof("SASL LOGIN PLAIN" CRLF) - 1); | |
| 420 } | |
| 421 | |
| 422 *p++ = '.'; *p++ = CR; *p = LF; | |
| 423 | |
| 424 | |
| 425 size += sizeof("STLS" CRLF) - 1; | |
| 426 | |
| 427 p = ngx_palloc(cf->pool, size); | |
| 428 if (p == NULL) { | |
| 429 return NGX_CONF_ERROR; | |
| 430 } | |
| 431 | |
| 432 conf->pop3_starttls_capability.len = size; | |
| 433 conf->pop3_starttls_capability.data = p; | |
| 434 | |
| 435 p = ngx_cpymem(p, conf->pop3_capability.data, | |
| 436 conf->pop3_capability.len - (sizeof("." CRLF) - 1)); | |
| 437 | |
| 438 p = ngx_cpymem(p, "STLS" CRLF, sizeof("STLS" CRLF) - 1); | |
| 439 *p++ = '.'; *p++ = CR; *p = LF; | |
| 440 | |
| 441 | |
| 442 if (conf->pop3_auth_methods & NGX_MAIL_AUTH_CRAM_MD5_ENABLED) { | |
| 443 conf->pop3_auth_capability = ngx_pop3_auth_cram_md5_capability; | |
| 444 | |
| 445 } else { | |
| 446 conf->pop3_auth_capability = ngx_pop3_auth_plain_capability; | |
| 447 } | |
| 448 | |
| 449 | |
| 450 p = ngx_palloc(cf->pool, stls_only_size); | |
| 451 if (p == NULL) { | |
| 452 return NGX_CONF_ERROR; | |
| 453 } | |
| 454 | |
| 455 conf->pop3_starttls_only_capability.len = stls_only_size; | |
| 456 conf->pop3_starttls_only_capability.data = p; | |
| 457 | |
| 458 p = ngx_cpymem(p, "+OK Capability list follows" CRLF, | |
| 459 sizeof("+OK Capability list follows" CRLF) - 1); | |
| 460 | |
| 461 for (i = 0; i < conf->pop3_capabilities.nelts; i++) { | |
| 462 if (ngx_strcasecmp(c[i].data, (u_char *) "USER") == 0) { | |
| 463 continue; | |
| 464 } | |
| 465 | |
| 466 p = ngx_cpymem(p, c[i].data, c[i].len); | |
| 467 *p++ = CR; *p++ = LF; | |
| 468 } | |
| 469 | |
| 470 p = ngx_cpymem(p, "STLS" CRLF, sizeof("STLS" CRLF) - 1); | |
| 471 *p++ = '.'; *p++ = CR; *p = LF; | |
| 472 | |
| 473 | |
| 474 if (conf->imap_capabilities.nelts == 0) { | |
| 475 conf->imap_capabilities = prev->imap_capabilities; | |
| 476 } | |
| 477 | |
| 478 if (conf->imap_capabilities.nelts == 0) { | |
| 479 | |
| 480 for (d = ngx_imap_default_capabilities; d->len; d++) { | |
| 481 c = ngx_array_push(&conf->imap_capabilities); | |
| 482 if (c == NULL) { | |
| 483 return NGX_CONF_ERROR; | |
| 484 } | |
| 485 | |
| 486 *c = *d; | |
| 487 } | |
| 488 } | |
| 489 | |
| 490 size = sizeof("* CAPABILITY" CRLF) - 1; | |
| 491 | |
| 492 c = conf->imap_capabilities.elts; | |
| 493 for (i = 0; i < conf->imap_capabilities.nelts; i++) { | |
| 494 size += 1 + c[i].len; | |
| 495 } | |
| 496 | |
|
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497 for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0; |
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498 m <= NGX_MAIL_AUTH_CRAM_MD5_ENABLED; |
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499 m <<= 1, i++) |
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500 { |
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501 if (m & conf->imap_auth_methods) { |
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502 size += 1 + ngx_imap_auth_methods_names[i].len; |
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503 } |
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504 } |
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505 |
| 290 | 506 p = ngx_palloc(cf->pool, size); |
| 507 if (p == NULL) { | |
| 508 return NGX_CONF_ERROR; | |
| 509 } | |
| 510 | |
| 511 conf->imap_capability.len = size; | |
| 512 conf->imap_capability.data = p; | |
| 513 | |
| 514 p = ngx_cpymem(p, "* CAPABILITY", sizeof("* CAPABILITY") - 1); | |
| 515 | |
| 516 for (i = 0; i < conf->imap_capabilities.nelts; i++) { | |
| 517 *p++ = ' '; | |
| 518 p = ngx_cpymem(p, c[i].data, c[i].len); | |
| 519 } | |
| 520 | |
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521 auth_p = p; |
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522 |
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523 for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0; |
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524 m <= NGX_MAIL_AUTH_CRAM_MD5_ENABLED; |
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525 m <<= 1, i++) |
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526 { |
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527 if (m & conf->imap_auth_methods) { |
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528 *p++ = ' '; |
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529 p = ngx_cpymem(p, ngx_imap_auth_methods_names[i].data, |
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530 ngx_imap_auth_methods_names[i].len); |
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531 } |
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532 } |
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533 |
| 290 | 534 *p++ = CR; *p = LF; |
| 535 | |
| 536 | |
| 537 size += sizeof(" STARTTLS") - 1; | |
| 538 | |
| 539 p = ngx_palloc(cf->pool, size); | |
| 540 if (p == NULL) { | |
| 541 return NGX_CONF_ERROR; | |
| 542 } | |
| 543 | |
| 544 conf->imap_starttls_capability.len = size; | |
| 545 conf->imap_starttls_capability.data = p; | |
| 546 | |
| 547 p = ngx_cpymem(p, conf->imap_capability.data, | |
| 548 conf->imap_capability.len - (sizeof(CRLF) - 1)); | |
| 549 p = ngx_cpymem(p, " STARTTLS", sizeof(" STARTTLS") - 1); | |
| 550 *p++ = CR; *p = LF; | |
| 551 | |
| 552 | |
|
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553 size = (auth_p - conf->imap_capability.data) + sizeof(CRLF) - 1 |
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554 + sizeof(" STARTTLS LOGINDISABLED") - 1; |
| 290 | 555 |
| 556 p = ngx_palloc(cf->pool, size); | |
| 557 if (p == NULL) { | |
| 558 return NGX_CONF_ERROR; | |
| 559 } | |
| 560 | |
| 561 conf->imap_starttls_only_capability.len = size; | |
| 562 conf->imap_starttls_only_capability.data = p; | |
| 563 | |
|
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564 p = ngx_cpymem(p, conf->imap_capability.data, |
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565 auth_p - conf->imap_capability.data); |
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566 p = ngx_cpymem(p, " STARTTLS LOGINDISABLED", |
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567 sizeof(" STARTTLS LOGINDISABLED") - 1); |
| 290 | 568 *p++ = CR; *p = LF; |
| 569 | |
| 570 | |
| 571 size = sizeof("220 ESMTP ready" CRLF) - 1 + conf->server_name.len; | |
| 572 | |
| 573 p = ngx_palloc(cf->pool, size); | |
| 574 if (p == NULL) { | |
| 575 return NGX_CONF_ERROR; | |
| 576 } | |
| 577 | |
| 578 conf->smtp_greeting.len = size; | |
| 579 conf->smtp_greeting.data = p; | |
| 580 | |
| 581 *p++ = '2'; *p++ = '2'; *p++ = '0'; *p++ = ' '; | |
| 582 p = ngx_cpymem(p, conf->server_name.data, conf->server_name.len); | |
| 583 ngx_memcpy(p, " ESMTP ready" CRLF, sizeof(" ESMTP ready" CRLF) - 1); | |
| 584 | |
| 585 | |
| 586 size = sizeof("250 " CRLF) - 1 + conf->server_name.len; | |
| 587 | |
| 588 p = ngx_palloc(cf->pool, size); | |
| 589 if (p == NULL) { | |
| 590 return NGX_CONF_ERROR; | |
| 591 } | |
| 592 | |
| 593 conf->smtp_server_name.len = size; | |
| 594 conf->smtp_server_name.data = p; | |
| 595 | |
| 596 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = ' '; | |
| 597 p = ngx_cpymem(p, conf->server_name.data, conf->server_name.len); | |
| 598 *p++ = CR; *p = LF; | |
| 599 | |
| 600 | |
| 601 if (conf->smtp_capabilities.nelts == 0) { | |
| 602 conf->smtp_capabilities = prev->smtp_capabilities; | |
| 603 } | |
| 604 | |
|
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605 size = sizeof("250-") - 1 + conf->server_name.len + sizeof(CRLF) - 1; |
| 290 | 606 |
| 607 c = conf->smtp_capabilities.elts; | |
| 608 for (i = 0; i < conf->smtp_capabilities.nelts; i++) { | |
| 609 size += sizeof("250 ") - 1 + c[i].len + sizeof(CRLF) - 1; | |
| 610 } | |
| 611 | |
|
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612 smtp_auth_enabled = 0; |
| 290 | 613 for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0; |
| 614 m <= NGX_MAIL_AUTH_CRAM_MD5_ENABLED; | |
| 615 m <<= 1, i++) | |
| 616 { | |
| 617 if (m & conf->smtp_auth_methods) { | |
| 618 size += 1 + ngx_smtp_auth_methods_names[i].len; | |
|
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619 smtp_auth_enabled = 1; |
| 290 | 620 } |
| 621 } | |
| 622 | |
|
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623 if (smtp_auth_enabled) { |
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624 size += sizeof("250 AUTH") - 1 + sizeof(CRLF) - 1; |
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625 } |
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626 |
| 290 | 627 p = ngx_palloc(cf->pool, size); |
| 628 if (p == NULL) { | |
| 629 return NGX_CONF_ERROR; | |
| 630 } | |
| 631 | |
| 632 conf->smtp_capability.len = size; | |
| 633 conf->smtp_capability.data = p; | |
| 634 | |
|
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635 last_p = p; |
| 290 | 636 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = '-'; |
| 637 p = ngx_cpymem(p, conf->server_name.data, conf->server_name.len); | |
| 638 *p++ = CR; *p++ = LF; | |
| 639 | |
| 640 for (i = 0; i < conf->smtp_capabilities.nelts; i++) { | |
|
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641 last_p = p; |
| 290 | 642 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = '-'; |
| 643 p = ngx_cpymem(p, c[i].data, c[i].len); | |
| 644 *p++ = CR; *p++ = LF; | |
| 645 } | |
| 646 | |
|
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647 auth_p = p; |
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648 |
|
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649 if (smtp_auth_enabled) { |
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650 last_p = p; |
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|
651 |
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|
652 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = ' '; |
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653 *p++ = 'A'; *p++ = 'U'; *p++ = 'T'; *p++ = 'H'; |
| 290 | 654 |
|
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655 for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0; |
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656 m <= NGX_MAIL_AUTH_CRAM_MD5_ENABLED; |
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657 m <<= 1, i++) |
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|
658 { |
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398
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|
659 if (m & conf->smtp_auth_methods) { |
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660 *p++ = ' '; |
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661 p = ngx_cpymem(p, ngx_smtp_auth_methods_names[i].data, |
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662 ngx_smtp_auth_methods_names[i].len); |
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663 } |
| 290 | 664 } |
|
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|
665 |
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|
666 *p++ = CR; *p = LF; |
| 290 | 667 |
|
400
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668 } else { |
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669 last_p[3] = ' '; |
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670 } |
| 290 | 671 |
|
396
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672 size += sizeof("250 STARTTLS" CRLF) - 1; |
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673 |
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674 p = ngx_palloc(cf->pool, size); |
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675 if (p == NULL) { |
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676 return NGX_CONF_ERROR; |
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677 } |
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678 |
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679 conf->smtp_starttls_capability.len = size; |
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680 conf->smtp_starttls_capability.data = p; |
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681 |
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682 p = ngx_cpymem(p, conf->smtp_capability.data, |
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683 conf->smtp_capability.len); |
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684 |
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685 p = ngx_cpymem(p, "250 STARTTLS" CRLF, sizeof("250 STARTTLS" CRLF) - 1); |
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686 *p++ = CR; *p = LF; |
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687 |
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688 p = conf->smtp_starttls_capability.data |
|
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689 + (last_p - conf->smtp_capability.data) + 3; |
|
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690 *p = '-'; |
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691 |
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692 size = (auth_p - conf->smtp_capability.data) |
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693 + sizeof("250 STARTTLS" CRLF) - 1; |
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694 |
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695 p = ngx_palloc(cf->pool, size); |
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696 if (p == NULL) { |
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697 return NGX_CONF_ERROR; |
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698 } |
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699 |
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700 conf->smtp_starttls_only_capability.len = size; |
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701 conf->smtp_starttls_only_capability.data = p; |
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702 |
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703 p = ngx_cpymem(p, conf->smtp_capability.data, |
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704 auth_p - conf->smtp_capability.data); |
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705 |
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706 p = ngx_cpymem(p, "250 STARTTLS" CRLF, sizeof("250 STARTTLS" CRLF) - 1); |
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707 |
|
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708 if (last_p < auth_p) { |
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709 p = conf->smtp_starttls_only_capability.data |
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710 + (last_p - conf->smtp_capability.data) + 3; |
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711 *p = '-'; |
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712 } |
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713 |
| 290 | 714 return NGX_CONF_OK; |
| 715 } | |
| 716 | |
| 717 | |
| 718 static char * | |
| 719 ngx_mail_core_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 720 { | |
| 721 char *rv; | |
| 722 void *mconf; | |
| 723 ngx_uint_t m; | |
| 724 ngx_conf_t pcf; | |
| 725 ngx_mail_module_t *module; | |
| 726 ngx_mail_conf_ctx_t *ctx, *mail_ctx; | |
| 727 ngx_mail_core_srv_conf_t *cscf, **cscfp; | |
| 728 ngx_mail_core_main_conf_t *cmcf; | |
| 729 | |
| 730 | |
| 731 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_mail_conf_ctx_t)); | |
| 732 if (ctx == NULL) { | |
| 733 return NGX_CONF_ERROR; | |
| 734 } | |
| 735 | |
| 736 mail_ctx = cf->ctx; | |
| 737 ctx->main_conf = mail_ctx->main_conf; | |
| 738 | |
| 739 /* the server{}'s srv_conf */ | |
| 740 | |
| 741 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_mail_max_module); | |
| 742 if (ctx->srv_conf == NULL) { | |
| 743 return NGX_CONF_ERROR; | |
| 744 } | |
| 745 | |
| 746 for (m = 0; ngx_modules[m]; m++) { | |
| 747 if (ngx_modules[m]->type != NGX_MAIL_MODULE) { | |
| 748 continue; | |
| 749 } | |
| 750 | |
| 751 module = ngx_modules[m]->ctx; | |
| 752 | |
| 753 if (module->create_srv_conf) { | |
| 754 mconf = module->create_srv_conf(cf); | |
| 755 if (mconf == NULL) { | |
| 756 return NGX_CONF_ERROR; | |
| 757 } | |
| 758 | |
| 759 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf; | |
| 760 } | |
| 761 } | |
| 762 | |
| 763 /* the server configuration context */ | |
| 764 | |
| 765 cscf = ctx->srv_conf[ngx_mail_core_module.ctx_index]; | |
| 766 cscf->ctx = ctx; | |
| 767 | |
| 768 cmcf = ctx->main_conf[ngx_mail_core_module.ctx_index]; | |
| 769 | |
| 770 cscfp = ngx_array_push(&cmcf->servers); | |
| 771 if (cscfp == NULL) { | |
| 772 return NGX_CONF_ERROR; | |
| 773 } | |
| 774 | |
| 775 *cscfp = cscf; | |
| 776 | |
| 777 | |
| 778 /* parse inside server{} */ | |
| 779 | |
| 780 pcf = *cf; | |
| 781 cf->ctx = ctx; | |
| 782 cf->cmd_type = NGX_MAIL_SRV_CONF; | |
| 783 | |
| 784 rv = ngx_conf_parse(cf, NULL); | |
| 785 | |
| 786 *cf = pcf; | |
| 787 | |
| 788 return rv; | |
| 789 } | |
| 790 | |
| 791 | |
| 792 /* AF_INET only */ | |
| 793 | |
| 794 static char * | |
| 795 ngx_mail_core_listen(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 796 { | |
| 797 ngx_str_t *value; | |
| 798 ngx_url_t u; | |
| 799 ngx_uint_t i; | |
| 800 ngx_mail_listen_t *imls; | |
| 801 ngx_mail_core_main_conf_t *cmcf; | |
| 802 | |
| 803 value = cf->args->elts; | |
| 804 | |
| 805 ngx_memzero(&u, sizeof(ngx_url_t)); | |
| 806 | |
| 807 u.url = value[1]; | |
| 808 u.listen = 1; | |
| 809 | |
| 810 if (ngx_parse_url(cf, &u) != NGX_OK) { | |
| 811 if (u.err) { | |
| 812 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 813 "%s in \"%V\" of the \"listen\" directive", | |
| 814 u.err, &u.url); | |
| 815 } | |
| 816 | |
| 817 return NGX_CONF_ERROR; | |
| 818 } | |
| 819 | |
| 820 cmcf = ngx_mail_conf_get_module_main_conf(cf, ngx_mail_core_module); | |
| 821 | |
| 822 imls = cmcf->listen.elts; | |
| 823 | |
| 824 for (i = 0; i < cmcf->listen.nelts; i++) { | |
| 825 | |
| 826 if (imls[i].addr != u.addr.in_addr || imls[i].port != u.port) { | |
| 827 continue; | |
| 828 } | |
| 829 | |
| 830 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 831 "duplicate \"%V\" address and port pair", &u.url); | |
| 832 return NGX_CONF_ERROR; | |
| 833 } | |
| 834 | |
| 835 imls = ngx_array_push(&cmcf->listen); | |
| 836 if (imls == NULL) { | |
| 837 return NGX_CONF_ERROR; | |
| 838 } | |
| 839 | |
| 840 ngx_memzero(imls, sizeof(ngx_mail_listen_t)); | |
| 841 | |
| 842 imls->addr = u.addr.in_addr; | |
| 843 imls->port = u.port; | |
| 844 imls->family = AF_INET; | |
| 845 imls->ctx = cf->ctx; | |
| 846 | |
| 847 if (cf->args->nelts == 2) { | |
| 848 return NGX_CONF_OK; | |
| 849 } | |
| 850 | |
| 851 if (ngx_strcmp(value[2].data, "bind") == 0) { | |
| 852 imls->bind = 1; | |
| 853 return NGX_CONF_OK; | |
| 854 } | |
| 855 | |
| 856 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 857 "the invalid \"%V\" parameter", &value[2]); | |
| 858 return NGX_CONF_ERROR; | |
| 859 } | |
| 860 | |
| 861 | |
| 862 static char * | |
| 863 ngx_mail_core_capability(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 864 { | |
| 865 char *p = conf; | |
| 866 | |
| 867 ngx_str_t *c, *value; | |
| 868 ngx_uint_t i; | |
| 869 ngx_array_t *a; | |
| 870 | |
| 871 a = (ngx_array_t *) (p + cmd->offset); | |
| 872 | |
| 873 value = cf->args->elts; | |
| 874 | |
| 875 for (i = 1; i < cf->args->nelts; i++) { | |
| 876 c = ngx_array_push(a); | |
| 877 if (c == NULL) { | |
| 878 return NGX_CONF_ERROR; | |
| 879 } | |
| 880 | |
| 881 *c = value[i]; | |
| 882 } | |
| 883 | |
| 884 return NGX_CONF_OK; | |
| 885 } |