Mercurial > hg > nginx
annotate src/mail/ngx_mail_proxy_module.c @ 2342:cd3abe5262c6
release-0.7.23 tag
author | Igor Sysoev <igor@sysoev.ru> |
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date | Thu, 27 Nov 2008 13:05:35 +0000 |
parents | 6bad42a41dd8 |
children | 722b5aff05ae |
rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 #include <ngx_event.h> |
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10 #include <ngx_event_connect.h> |
1136 | 11 #include <ngx_mail.h> |
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13 |
521 | 14 typedef struct { |
15 ngx_flag_t enable; | |
857 | 16 ngx_flag_t pass_error_message; |
1136 | 17 ngx_flag_t xclient; |
539 | 18 size_t buffer_size; |
19 ngx_msec_t timeout; | |
1136 | 20 } ngx_mail_proxy_conf_t; |
521 | 21 |
22 | |
1136 | 23 static void ngx_mail_proxy_block_read(ngx_event_t *rev); |
24 static void ngx_mail_proxy_pop3_handler(ngx_event_t *rev); | |
25 static void ngx_mail_proxy_imap_handler(ngx_event_t *rev); | |
26 static void ngx_mail_proxy_smtp_handler(ngx_event_t *rev); | |
27 static void ngx_mail_proxy_dummy_handler(ngx_event_t *ev); | |
28 static ngx_int_t ngx_mail_proxy_read_response(ngx_mail_session_t *s, | |
663 | 29 ngx_uint_t state); |
1136 | 30 static void ngx_mail_proxy_handler(ngx_event_t *ev); |
31 static void ngx_mail_proxy_upstream_error(ngx_mail_session_t *s); | |
32 static void ngx_mail_proxy_internal_server_error(ngx_mail_session_t *s); | |
33 static void ngx_mail_proxy_close_session(ngx_mail_session_t *s); | |
34 static void *ngx_mail_proxy_create_conf(ngx_conf_t *cf); | |
35 static char *ngx_mail_proxy_merge_conf(ngx_conf_t *cf, void *parent, | |
521 | 36 void *child); |
37 | |
38 | |
1136 | 39 static ngx_command_t ngx_mail_proxy_commands[] = { |
539 | 40 |
521 | 41 { ngx_string("proxy"), |
1136 | 42 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_FLAG, |
521 | 43 ngx_conf_set_flag_slot, |
1136 | 44 NGX_MAIL_SRV_CONF_OFFSET, |
45 offsetof(ngx_mail_proxy_conf_t, enable), | |
521 | 46 NULL }, |
47 | |
539 | 48 { ngx_string("proxy_buffer"), |
1136 | 49 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1, |
539 | 50 ngx_conf_set_size_slot, |
1136 | 51 NGX_MAIL_SRV_CONF_OFFSET, |
52 offsetof(ngx_mail_proxy_conf_t, buffer_size), | |
539 | 53 NULL }, |
54 | |
55 { ngx_string("proxy_timeout"), | |
1136 | 56 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1, |
539 | 57 ngx_conf_set_msec_slot, |
1136 | 58 NGX_MAIL_SRV_CONF_OFFSET, |
59 offsetof(ngx_mail_proxy_conf_t, timeout), | |
539 | 60 NULL }, |
61 | |
857 | 62 { ngx_string("proxy_pass_error_message"), |
1136 | 63 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1, |
857 | 64 ngx_conf_set_flag_slot, |
1136 | 65 NGX_MAIL_SRV_CONF_OFFSET, |
66 offsetof(ngx_mail_proxy_conf_t, pass_error_message), | |
67 NULL }, | |
68 | |
69 { ngx_string("xclient"), | |
70 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_FLAG, | |
71 ngx_conf_set_flag_slot, | |
72 NGX_MAIL_SRV_CONF_OFFSET, | |
73 offsetof(ngx_mail_proxy_conf_t, xclient), | |
857 | 74 NULL }, |
75 | |
521 | 76 ngx_null_command |
77 }; | |
418
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78 |
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79 |
1136 | 80 static ngx_mail_module_t ngx_mail_proxy_module_ctx = { |
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81 NULL, /* protocol */ |
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82 |
521 | 83 NULL, /* create main configuration */ |
84 NULL, /* init main configuration */ | |
85 | |
1136 | 86 ngx_mail_proxy_create_conf, /* create server configuration */ |
87 ngx_mail_proxy_merge_conf /* merge server configuration */ | |
521 | 88 }; |
89 | |
90 | |
1136 | 91 ngx_module_t ngx_mail_proxy_module = { |
521 | 92 NGX_MODULE_V1, |
1136 | 93 &ngx_mail_proxy_module_ctx, /* module context */ |
94 ngx_mail_proxy_commands, /* module directives */ | |
95 NGX_MAIL_MODULE, /* module type */ | |
541 | 96 NULL, /* init master */ |
521 | 97 NULL, /* init module */ |
541 | 98 NULL, /* init process */ |
99 NULL, /* init thread */ | |
100 NULL, /* exit thread */ | |
101 NULL, /* exit process */ | |
102 NULL, /* exit master */ | |
103 NGX_MODULE_V1_PADDING | |
521 | 104 }; |
105 | |
106 | |
2309 | 107 static u_char smtp_ok[] = "250 2.0.0 OK" CRLF; |
1136 | 108 |
109 | |
521 | 110 void |
1136 | 111 ngx_mail_proxy_init(ngx_mail_session_t *s, ngx_peer_addr_t *peer) |
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112 { |
587 | 113 int keepalive; |
527 | 114 ngx_int_t rc; |
1136 | 115 ngx_mail_proxy_ctx_t *p; |
116 ngx_mail_proxy_conf_t *pcf; | |
117 ngx_mail_core_srv_conf_t *cscf; | |
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118 |
587 | 119 s->connection->log->action = "connecting to upstream"; |
120 | |
1136 | 121 cscf = ngx_mail_get_module_srv_conf(s, ngx_mail_core_module); |
587 | 122 |
123 if (cscf->so_keepalive) { | |
124 keepalive = 1; | |
125 | |
126 if (setsockopt(s->connection->fd, SOL_SOCKET, SO_KEEPALIVE, | |
127 (const void *) &keepalive, sizeof(int)) | |
128 == -1) | |
129 { | |
130 ngx_log_error(NGX_LOG_ALERT, s->connection->log, ngx_socket_errno, | |
131 "setsockopt(SO_KEEPALIVE) failed"); | |
132 } | |
133 } | |
134 | |
1136 | 135 p = ngx_pcalloc(s->connection->pool, sizeof(ngx_mail_proxy_ctx_t)); |
501 | 136 if (p == NULL) { |
1136 | 137 ngx_mail_session_internal_server_error(s); |
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138 return; |
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139 } |
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140 |
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141 s->proxy = p; |
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142 |
884 | 143 p->upstream.sockaddr = peer->sockaddr; |
144 p->upstream.socklen = peer->socklen; | |
145 p->upstream.name = &peer->name; | |
146 p->upstream.get = ngx_event_get_peer; | |
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147 p->upstream.log = s->connection->log; |
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148 p->upstream.log_error = NGX_ERROR_ERR; |
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149 |
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150 rc = ngx_event_connect_peer(&p->upstream); |
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151 |
543 | 152 if (rc == NGX_ERROR || rc == NGX_BUSY || rc == NGX_DECLINED) { |
1136 | 153 ngx_mail_proxy_internal_server_error(s); |
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154 return; |
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155 } |
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156 |
527 | 157 ngx_add_timer(p->upstream.connection->read, cscf->timeout); |
158 | |
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159 p->upstream.connection->data = s; |
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160 p->upstream.connection->pool = s->connection->pool; |
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161 |
1136 | 162 s->connection->read->handler = ngx_mail_proxy_block_read; |
163 p->upstream.connection->write->handler = ngx_mail_proxy_dummy_handler; | |
164 | |
165 pcf = ngx_mail_get_module_srv_conf(s, ngx_mail_proxy_module); | |
166 | |
167 s->proxy->buffer = ngx_create_temp_buf(s->connection->pool, | |
168 pcf->buffer_size); | |
169 if (s->proxy->buffer == NULL) { | |
170 ngx_mail_proxy_internal_server_error(s); | |
171 return; | |
172 } | |
173 | |
1981 | 174 s->out.len = 0; |
175 | |
1136 | 176 switch (s->protocol) { |
527 | 177 |
1136 | 178 case NGX_MAIL_POP3_PROTOCOL: |
179 p->upstream.connection->read->handler = ngx_mail_proxy_pop3_handler; | |
180 s->mail_state = ngx_pop3_start; | |
181 break; | |
527 | 182 |
1136 | 183 case NGX_MAIL_IMAP_PROTOCOL: |
184 p->upstream.connection->read->handler = ngx_mail_proxy_imap_handler; | |
185 s->mail_state = ngx_imap_start; | |
186 break; | |
187 | |
188 default: /* NGX_MAIL_SMTP_PROTOCOL */ | |
189 p->upstream.connection->read->handler = ngx_mail_proxy_smtp_handler; | |
190 s->mail_state = ngx_smtp_start; | |
191 break; | |
527 | 192 } |
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193 } |
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194 |
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195 |
521 | 196 static void |
1136 | 197 ngx_mail_proxy_block_read(ngx_event_t *rev) |
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198 { |
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199 ngx_connection_t *c; |
1136 | 200 ngx_mail_session_t *s; |
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201 |
1136 | 202 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, "mail proxy block read"); |
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203 |
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204 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { |
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205 c = rev->data; |
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206 s = c->data; |
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207 |
1136 | 208 ngx_mail_proxy_close_session(s); |
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209 } |
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210 } |
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211 |
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212 |
521 | 213 static void |
1136 | 214 ngx_mail_proxy_pop3_handler(ngx_event_t *rev) |
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215 { |
539 | 216 u_char *p; |
217 ngx_int_t rc; | |
218 ngx_str_t line; | |
219 ngx_connection_t *c; | |
1136 | 220 ngx_mail_session_t *s; |
221 ngx_mail_proxy_conf_t *pcf; | |
419
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222 |
1136 | 223 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, |
224 "mail proxy pop3 auth handler"); | |
419
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225 |
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226 c = rev->data; |
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227 s = c->data; |
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228 |
423
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229 if (rev->timedout) { |
527 | 230 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, |
231 "upstream timed out"); | |
577 | 232 c->timedout = 1; |
1136 | 233 ngx_mail_proxy_internal_server_error(s); |
423
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234 return; |
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235 } |
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236 |
1136 | 237 rc = ngx_mail_proxy_read_response(s, 0); |
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238 |
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239 if (rc == NGX_AGAIN) { |
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240 return; |
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241 } |
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242 |
571 | 243 if (rc == NGX_ERROR) { |
1136 | 244 ngx_mail_proxy_upstream_error(s); |
422
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245 return; |
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246 } |
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247 |
1136 | 248 switch (s->mail_state) { |
587 | 249 |
1136 | 250 case ngx_pop3_start: |
251 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, "mail proxy send user"); | |
422
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252 |
587 | 253 s->connection->log->action = "sending user name to upstream"; |
254 | |
1136 | 255 line.len = sizeof("USER ") - 1 + s->login.len + 2; |
2049 | 256 line.data = ngx_pnalloc(c->pool, line.len); |
527 | 257 if (line.data == NULL) { |
1136 | 258 ngx_mail_proxy_internal_server_error(s); |
527 | 259 return; |
260 } | |
261 | |
1136 | 262 p = ngx_cpymem(line.data, "USER ", sizeof("USER ") - 1); |
263 p = ngx_cpymem(p, s->login.data, s->login.len); | |
264 *p++ = CR; *p = LF; | |
527 | 265 |
1136 | 266 s->mail_state = ngx_pop3_user; |
527 | 267 break; |
268 | |
1136 | 269 case ngx_pop3_user: |
270 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, "mail proxy send pass"); | |
527 | 271 |
587 | 272 s->connection->log->action = "sending password to upstream"; |
273 | |
1136 | 274 line.len = sizeof("PASS ") - 1 + s->passwd.len + 2; |
2049 | 275 line.data = ngx_pnalloc(c->pool, line.len); |
501 | 276 if (line.data == NULL) { |
1136 | 277 ngx_mail_proxy_internal_server_error(s); |
527 | 278 return; |
279 } | |
280 | |
1136 | 281 p = ngx_cpymem(line.data, "PASS ", sizeof("PASS ") - 1); |
282 p = ngx_cpymem(p, s->passwd.data, s->passwd.len); | |
527 | 283 *p++ = CR; *p = LF; |
284 | |
1136 | 285 s->mail_state = ngx_pop3_passwd; |
527 | 286 break; |
287 | |
1136 | 288 case ngx_pop3_passwd: |
289 s->connection->read->handler = ngx_mail_proxy_handler; | |
290 s->connection->write->handler = ngx_mail_proxy_handler; | |
291 rev->handler = ngx_mail_proxy_handler; | |
292 c->write->handler = ngx_mail_proxy_handler; | |
663 | 293 |
1136 | 294 pcf = ngx_mail_get_module_srv_conf(s, ngx_mail_proxy_module); |
663 | 295 ngx_add_timer(s->connection->read, pcf->timeout); |
296 ngx_del_timer(c->read); | |
297 | |
298 c->log->action = NULL; | |
299 ngx_log_error(NGX_LOG_INFO, c->log, 0, "client logged in"); | |
300 | |
1136 | 301 ngx_mail_proxy_handler(s->connection->write); |
663 | 302 |
303 return; | |
304 | |
527 | 305 default: |
306 #if (NGX_SUPPRESS_WARN) | |
307 line.len = 0; | |
308 line.data = NULL; | |
309 #endif | |
310 break; | |
311 } | |
312 | |
539 | 313 if (c->send(c, line.data, line.len) < (ssize_t) line.len) { |
527 | 314 /* |
315 * we treat the incomplete sending as NGX_ERROR | |
316 * because it is very strange here | |
317 */ | |
1136 | 318 ngx_mail_proxy_internal_server_error(s); |
527 | 319 return; |
320 } | |
321 | |
322 s->proxy->buffer->pos = s->proxy->buffer->start; | |
323 s->proxy->buffer->last = s->proxy->buffer->start; | |
324 } | |
325 | |
326 | |
327 static void | |
1136 | 328 ngx_mail_proxy_imap_handler(ngx_event_t *rev) |
527 | 329 { |
539 | 330 u_char *p; |
331 ngx_int_t rc; | |
332 ngx_str_t line; | |
333 ngx_connection_t *c; | |
1136 | 334 ngx_mail_session_t *s; |
335 ngx_mail_proxy_conf_t *pcf; | |
527 | 336 |
1136 | 337 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, |
338 "mail proxy imap auth handler"); | |
527 | 339 |
340 c = rev->data; | |
341 s = c->data; | |
342 | |
343 if (rev->timedout) { | |
344 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, | |
345 "upstream timed out"); | |
577 | 346 c->timedout = 1; |
1136 | 347 ngx_mail_proxy_internal_server_error(s); |
527 | 348 return; |
349 } | |
350 | |
1136 | 351 rc = ngx_mail_proxy_read_response(s, s->mail_state); |
527 | 352 |
353 if (rc == NGX_AGAIN) { | |
354 return; | |
355 } | |
356 | |
571 | 357 if (rc == NGX_ERROR) { |
1136 | 358 ngx_mail_proxy_upstream_error(s); |
527 | 359 return; |
360 } | |
361 | |
1136 | 362 switch (s->mail_state) { |
527 | 363 |
1136 | 364 case ngx_imap_start: |
365 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, | |
366 "mail proxy send login"); | |
527 | 367 |
1136 | 368 s->connection->log->action = "sending LOGIN command to upstream"; |
587 | 369 |
1136 | 370 line.len = s->tag.len + sizeof("LOGIN ") - 1 |
371 + 1 + NGX_SIZE_T_LEN + 1 + 2; | |
2049 | 372 line.data = ngx_pnalloc(c->pool, line.len); |
527 | 373 if (line.data == NULL) { |
1136 | 374 ngx_mail_proxy_internal_server_error(s); |
419
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375 return; |
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376 } |
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377 |
1136 | 378 line.len = ngx_sprintf(line.data, "%VLOGIN {%uz}" CRLF, |
379 &s->tag, s->login.len) | |
380 - line.data; | |
422
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381 |
1136 | 382 s->mail_state = ngx_imap_login; |
527 | 383 break; |
384 | |
1136 | 385 case ngx_imap_login: |
386 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, "mail proxy send user"); | |
387 | |
388 s->connection->log->action = "sending user name to upstream"; | |
389 | |
390 line.len = s->login.len + 1 + 1 + NGX_SIZE_T_LEN + 1 + 2; | |
2049 | 391 line.data = ngx_pnalloc(c->pool, line.len); |
1136 | 392 if (line.data == NULL) { |
393 ngx_mail_proxy_internal_server_error(s); | |
394 return; | |
395 } | |
396 | |
397 line.len = ngx_sprintf(line.data, "%V {%uz}" CRLF, | |
398 &s->login, s->passwd.len) | |
399 - line.data; | |
400 | |
401 s->mail_state = ngx_imap_user; | |
402 break; | |
403 | |
404 case ngx_imap_user: | |
405 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, | |
406 "mail proxy send passwd"); | |
527 | 407 |
587 | 408 s->connection->log->action = "sending password to upstream"; |
409 | |
1136 | 410 line.len = s->passwd.len + 2; |
2049 | 411 line.data = ngx_pnalloc(c->pool, line.len); |
527 | 412 if (line.data == NULL) { |
1136 | 413 ngx_mail_proxy_internal_server_error(s); |
422
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414 return; |
419
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415 } |
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416 |
1136 | 417 p = ngx_cpymem(line.data, s->passwd.data, s->passwd.len); |
527 | 418 *p++ = CR; *p = LF; |
422
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419 |
1136 | 420 s->mail_state = ngx_imap_passwd; |
527 | 421 break; |
422
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422 |
1136 | 423 case ngx_imap_passwd: |
424 s->connection->read->handler = ngx_mail_proxy_handler; | |
425 s->connection->write->handler = ngx_mail_proxy_handler; | |
426 rev->handler = ngx_mail_proxy_handler; | |
427 c->write->handler = ngx_mail_proxy_handler; | |
663 | 428 |
1136 | 429 pcf = ngx_mail_get_module_srv_conf(s, ngx_mail_proxy_module); |
663 | 430 ngx_add_timer(s->connection->read, pcf->timeout); |
431 ngx_del_timer(c->read); | |
432 | |
433 c->log->action = NULL; | |
434 ngx_log_error(NGX_LOG_INFO, c->log, 0, "client logged in"); | |
435 | |
1136 | 436 ngx_mail_proxy_handler(s->connection->write); |
663 | 437 |
438 return; | |
439 | |
527 | 440 default: |
441 #if (NGX_SUPPRESS_WARN) | |
442 line.len = 0; | |
443 line.data = NULL; | |
444 #endif | |
445 break; | |
422
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446 } |
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447 |
539 | 448 if (c->send(c, line.data, line.len) < (ssize_t) line.len) { |
422
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449 /* |
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450 * we treat the incomplete sending as NGX_ERROR |
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451 * because it is very strange here |
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452 */ |
1136 | 453 ngx_mail_proxy_internal_server_error(s); |
422
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454 return; |
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455 } |
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456 |
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457 s->proxy->buffer->pos = s->proxy->buffer->start; |
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458 s->proxy->buffer->last = s->proxy->buffer->start; |
419
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459 } |
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460 |
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461 |
521 | 462 static void |
1136 | 463 ngx_mail_proxy_smtp_handler(ngx_event_t *rev) |
464 { | |
465 u_char *p; | |
466 ngx_int_t rc; | |
467 ngx_str_t line; | |
2309 | 468 ngx_buf_t *b; |
1136 | 469 ngx_connection_t *c; |
470 ngx_mail_session_t *s; | |
471 ngx_mail_proxy_conf_t *pcf; | |
472 ngx_mail_core_srv_conf_t *cscf; | |
473 | |
474 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, | |
475 "mail proxy smtp auth handler"); | |
476 | |
477 c = rev->data; | |
478 s = c->data; | |
479 | |
480 if (rev->timedout) { | |
481 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, | |
482 "upstream timed out"); | |
483 c->timedout = 1; | |
484 ngx_mail_proxy_internal_server_error(s); | |
485 return; | |
486 } | |
487 | |
488 rc = ngx_mail_proxy_read_response(s, s->mail_state); | |
489 | |
490 if (rc == NGX_AGAIN) { | |
491 return; | |
492 } | |
493 | |
494 if (rc == NGX_ERROR) { | |
495 ngx_mail_proxy_upstream_error(s); | |
496 return; | |
497 } | |
498 | |
499 switch (s->mail_state) { | |
500 | |
501 case ngx_smtp_start: | |
502 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, "mail proxy send ehlo"); | |
503 | |
504 s->connection->log->action = "sending HELO/EHLO to upstream"; | |
505 | |
506 cscf = ngx_mail_get_module_srv_conf(s, ngx_mail_core_module); | |
507 | |
508 line.len = sizeof("HELO ") - 1 + cscf->server_name.len + 2; | |
2049 | 509 line.data = ngx_pnalloc(c->pool, line.len); |
1136 | 510 if (line.data == NULL) { |
511 ngx_mail_proxy_internal_server_error(s); | |
512 return; | |
513 } | |
514 | |
515 pcf = ngx_mail_get_module_srv_conf(s, ngx_mail_proxy_module); | |
516 | |
517 p = ngx_cpymem(line.data, | |
518 ((s->esmtp || pcf->xclient) ? "EHLO " : "HELO "), | |
519 sizeof("HELO ") - 1); | |
520 | |
521 p = ngx_cpymem(p, cscf->server_name.data, cscf->server_name.len); | |
522 *p++ = CR; *p = LF; | |
523 | |
2309 | 524 if (pcf->xclient) { |
525 s->mail_state = ngx_smtp_helo_xclient; | |
526 | |
527 } else if (s->auth_method == NGX_MAIL_AUTH_NONE) { | |
528 s->mail_state = ngx_smtp_helo_from; | |
529 | |
530 } else { | |
531 s->mail_state = ngx_smtp_helo; | |
532 } | |
1136 | 533 |
534 break; | |
535 | |
2309 | 536 case ngx_smtp_helo_xclient: |
1136 | 537 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, |
538 "mail proxy send xclient"); | |
539 | |
540 s->connection->log->action = "sending XCLIENT to upstream"; | |
541 | |
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542 line.len = sizeof("XCLIENT PROTO=SMTP HELO= ADDR= LOGIN= NAME=" |
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543 CRLF) - 1 |
1136 | 544 + s->esmtp + s->smtp_helo.len |
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545 + s->connection->addr_text.len + s->login.len + s->host.len; |
1136 | 546 |
2049 | 547 line.data = ngx_pnalloc(c->pool, line.len); |
1136 | 548 if (line.data == NULL) { |
549 ngx_mail_proxy_internal_server_error(s); | |
550 return; | |
551 } | |
552 | |
2309 | 553 line.len = ngx_sprintf(line.data, |
554 "XCLIENT PROTO=%sSMTP%s%V ADDR=%V%s%V NAME=%V" CRLF, | |
555 (s->esmtp ? "E" : ""), | |
556 (s->smtp_helo.len ? " HELO=" : ""), &s->smtp_helo, | |
557 &s->connection->addr_text, | |
558 (s->login.len ? " LOGIN=" : ""), &s->login, &s->host) | |
559 - line.data; | |
560 | |
561 s->mail_state = (s->auth_method == NGX_MAIL_AUTH_NONE) ? | |
562 ngx_smtp_xclient_from : ngx_smtp_xclient; | |
563 | |
564 break; | |
565 | |
566 case ngx_smtp_helo_from: | |
567 case ngx_smtp_xclient_from: | |
568 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, | |
569 "mail proxy send mail from"); | |
570 | |
571 s->connection->log->action = "sending MAIL FROM to upstream"; | |
572 | |
573 line.len = s->smtp_from.len + sizeof(CRLF) - 1; | |
574 line.data = ngx_pnalloc(c->pool, line.len); | |
575 if (line.data == NULL) { | |
576 ngx_mail_proxy_internal_server_error(s); | |
577 return; | |
1136 | 578 } |
579 | |
2309 | 580 p = ngx_cpymem(line.data, s->smtp_from.data, s->smtp_from.len); |
581 *p++ = CR; *p = LF; | |
582 | |
583 s->mail_state = ngx_smtp_from; | |
584 | |
1136 | 585 break; |
586 | |
2309 | 587 case ngx_smtp_from: |
588 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, | |
589 "mail proxy send rcpt to"); | |
590 | |
591 s->connection->log->action = "sending RCPT TO to upstream"; | |
592 | |
593 line.len = s->smtp_to.len + sizeof(CRLF) - 1; | |
594 line.data = ngx_pnalloc(c->pool, line.len); | |
595 if (line.data == NULL) { | |
596 ngx_mail_proxy_internal_server_error(s); | |
597 return; | |
598 } | |
599 | |
600 p = ngx_cpymem(line.data, s->smtp_to.data, s->smtp_to.len); | |
601 *p++ = CR; *p = LF; | |
602 | |
603 s->mail_state = ngx_smtp_to; | |
1136 | 604 |
2309 | 605 break; |
606 | |
607 case ngx_smtp_helo: | |
608 case ngx_smtp_xclient: | |
609 case ngx_smtp_to: | |
610 | |
611 b = s->proxy->buffer; | |
1136 | 612 |
2309 | 613 if (s->auth_method == NGX_MAIL_AUTH_NONE) { |
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614 b->pos = b->start; |
2309 | 615 |
616 } else { | |
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617 ngx_memcpy(b->start, smtp_ok, sizeof(smtp_ok) - 1); |
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618 b->last = b->start + sizeof(smtp_ok) - 1; |
2309 | 619 } |
620 | |
1136 | 621 s->connection->read->handler = ngx_mail_proxy_handler; |
622 s->connection->write->handler = ngx_mail_proxy_handler; | |
623 rev->handler = ngx_mail_proxy_handler; | |
624 c->write->handler = ngx_mail_proxy_handler; | |
625 | |
626 pcf = ngx_mail_get_module_srv_conf(s, ngx_mail_proxy_module); | |
627 ngx_add_timer(s->connection->read, pcf->timeout); | |
628 ngx_del_timer(c->read); | |
629 | |
630 c->log->action = NULL; | |
631 ngx_log_error(NGX_LOG_INFO, c->log, 0, "client logged in"); | |
632 | |
633 ngx_mail_proxy_handler(s->connection->write); | |
634 | |
635 return; | |
636 | |
637 default: | |
638 #if (NGX_SUPPRESS_WARN) | |
639 line.len = 0; | |
640 line.data = NULL; | |
641 #endif | |
642 break; | |
643 } | |
644 | |
645 if (c->send(c, line.data, line.len) < (ssize_t) line.len) { | |
646 /* | |
647 * we treat the incomplete sending as NGX_ERROR | |
648 * because it is very strange here | |
649 */ | |
650 ngx_mail_proxy_internal_server_error(s); | |
651 return; | |
652 } | |
653 | |
654 s->proxy->buffer->pos = s->proxy->buffer->start; | |
655 s->proxy->buffer->last = s->proxy->buffer->start; | |
656 } | |
657 | |
658 | |
659 static void | |
660 ngx_mail_proxy_dummy_handler(ngx_event_t *wev) | |
419
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661 { |
583 | 662 ngx_connection_t *c; |
1136 | 663 ngx_mail_session_t *s; |
583 | 664 |
1136 | 665 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, wev->log, 0, "mail proxy dummy handler"); |
583 | 666 |
667 if (ngx_handle_write_event(wev, 0) == NGX_ERROR) { | |
668 c = wev->data; | |
669 s = c->data; | |
670 | |
1136 | 671 ngx_mail_proxy_close_session(s); |
583 | 672 } |
419
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673 } |
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Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
674 |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
675 |
521 | 676 static ngx_int_t |
1136 | 677 ngx_mail_proxy_read_response(ngx_mail_session_t *s, ngx_uint_t state) |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
678 { |
857 | 679 u_char *p; |
680 ssize_t n; | |
681 ngx_buf_t *b; | |
1136 | 682 ngx_mail_proxy_conf_t *pcf; |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
683 |
587 | 684 s->connection->log->action = "reading response from upstream"; |
685 | |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
686 b = s->proxy->buffer; |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
687 |
539 | 688 n = s->proxy->upstream.connection->recv(s->proxy->upstream.connection, |
689 b->last, b->end - b->last); | |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
690 |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
691 if (n == NGX_ERROR || n == 0) { |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
692 return NGX_ERROR; |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
693 } |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
694 |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
695 if (n == NGX_AGAIN) { |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
696 return NGX_AGAIN; |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
697 } |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
698 |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
699 b->last += n; |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
700 |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
701 if (b->last - b->pos < 5) { |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
702 return NGX_AGAIN; |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
703 } |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
704 |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
705 if (*(b->last - 2) != CR || *(b->last - 1) != LF) { |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
706 if (b->last == b->end) { |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
707 *(b->last - 1) = '\0'; |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
708 ngx_log_error(NGX_LOG_ERR, s->connection->log, 0, |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
709 "upstream sent too long response line: \"%s\"", |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
710 b->pos); |
571 | 711 return NGX_ERROR; |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
712 } |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
713 |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
714 return NGX_AGAIN; |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
715 } |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
716 |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
717 p = b->pos; |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
718 |
1136 | 719 switch (s->protocol) { |
720 | |
721 case NGX_MAIL_POP3_PROTOCOL: | |
527 | 722 if (p[0] == '+' && p[1] == 'O' && p[2] == 'K') { |
723 return NGX_OK; | |
724 } | |
1136 | 725 break; |
527 | 726 |
1136 | 727 case NGX_MAIL_IMAP_PROTOCOL: |
663 | 728 switch (state) { |
729 | |
730 case ngx_imap_start: | |
527 | 731 if (p[0] == '*' && p[1] == ' ' && p[2] == 'O' && p[3] == 'K') { |
732 return NGX_OK; | |
733 } | |
663 | 734 break; |
527 | 735 |
663 | 736 case ngx_imap_login: |
737 case ngx_imap_user: | |
529 | 738 if (p[0] == '+') { |
527 | 739 return NGX_OK; |
740 } | |
663 | 741 break; |
742 | |
743 case ngx_imap_passwd: | |
744 if (ngx_strncmp(p, s->tag.data, s->tag.len) == 0) { | |
745 p += s->tag.len; | |
746 if (p[0] == 'O' && p[1] == 'K') { | |
747 return NGX_OK; | |
748 } | |
749 } | |
750 break; | |
527 | 751 } |
1136 | 752 |
753 break; | |
754 | |
755 default: /* NGX_MAIL_SMTP_PROTOCOL */ | |
756 switch (state) { | |
757 | |
2311
6bad42a41dd8
do not close session if SMTP backend returned an error on RCPT TO
Igor Sysoev <igor@sysoev.ru>
parents:
2309
diff
changeset
|
758 case ngx_smtp_start: |
6bad42a41dd8
do not close session if SMTP backend returned an error on RCPT TO
Igor Sysoev <igor@sysoev.ru>
parents:
2309
diff
changeset
|
759 if (p[0] == '2' && p[1] == '2' && p[2] == '0') { |
1166 | 760 return NGX_OK; |
761 } | |
762 break; | |
1136 | 763 |
2311
6bad42a41dd8
do not close session if SMTP backend returned an error on RCPT TO
Igor Sysoev <igor@sysoev.ru>
parents:
2309
diff
changeset
|
764 case ngx_smtp_helo: |
6bad42a41dd8
do not close session if SMTP backend returned an error on RCPT TO
Igor Sysoev <igor@sysoev.ru>
parents:
2309
diff
changeset
|
765 case ngx_smtp_helo_xclient: |
6bad42a41dd8
do not close session if SMTP backend returned an error on RCPT TO
Igor Sysoev <igor@sysoev.ru>
parents:
2309
diff
changeset
|
766 case ngx_smtp_helo_from: |
6bad42a41dd8
do not close session if SMTP backend returned an error on RCPT TO
Igor Sysoev <igor@sysoev.ru>
parents:
2309
diff
changeset
|
767 case ngx_smtp_from: |
6bad42a41dd8
do not close session if SMTP backend returned an error on RCPT TO
Igor Sysoev <igor@sysoev.ru>
parents:
2309
diff
changeset
|
768 if (p[0] == '2' && p[1] == '5' && p[2] == '0') { |
2309 | 769 return NGX_OK; |
770 } | |
771 break; | |
772 | |
1136 | 773 case ngx_smtp_xclient: |
2309 | 774 case ngx_smtp_xclient_from: |
775 if (p[0] == '2' && (p[1] == '2' || p[1] == '5') && p[2] == '0') { | |
1166 | 776 return NGX_OK; |
777 } | |
778 break; | |
2311
6bad42a41dd8
do not close session if SMTP backend returned an error on RCPT TO
Igor Sysoev <igor@sysoev.ru>
parents:
2309
diff
changeset
|
779 |
6bad42a41dd8
do not close session if SMTP backend returned an error on RCPT TO
Igor Sysoev <igor@sysoev.ru>
parents:
2309
diff
changeset
|
780 case ngx_smtp_to: |
6bad42a41dd8
do not close session if SMTP backend returned an error on RCPT TO
Igor Sysoev <igor@sysoev.ru>
parents:
2309
diff
changeset
|
781 return NGX_OK; |
1136 | 782 } |
783 | |
1166 | 784 break; |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
785 } |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
786 |
1136 | 787 pcf = ngx_mail_get_module_srv_conf(s, ngx_mail_proxy_module); |
857 | 788 |
789 if (pcf->pass_error_message == 0) { | |
790 *(b->last - 2) = '\0'; | |
791 ngx_log_error(NGX_LOG_ERR, s->connection->log, 0, | |
792 "upstream sent invalid response: \"%s\"", p); | |
793 return NGX_ERROR; | |
794 } | |
795 | |
796 s->out.len = b->last - p - 2; | |
797 s->out.data = p; | |
798 | |
799 ngx_log_error(NGX_LOG_INFO, s->connection->log, 0, | |
800 "upstream sent invalid response: \"%V\"", &s->out); | |
801 | |
802 s->out.len = b->last - b->pos; | |
803 s->out.data = b->pos; | |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
804 |
571 | 805 return NGX_ERROR; |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
806 } |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
807 |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
808 |
521 | 809 static void |
1136 | 810 ngx_mail_proxy_handler(ngx_event_t *ev) |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
811 { |
583 | 812 char *action, *recv_action, *send_action; |
539 | 813 size_t size; |
814 ssize_t n; | |
815 ngx_buf_t *b; | |
583 | 816 ngx_uint_t do_write; |
539 | 817 ngx_connection_t *c, *src, *dst; |
1136 | 818 ngx_mail_session_t *s; |
819 ngx_mail_proxy_conf_t *pcf; | |
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
820 |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
821 c = ev->data; |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
822 s = c->data; |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
823 |
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
824 if (ev->timedout) { |
583 | 825 c->log->action = "proxying"; |
826 | |
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
827 if (c == s->connection) { |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
828 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
829 "client timed out"); |
577 | 830 c->timedout = 1; |
831 | |
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
832 } else { |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
833 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
834 "upstream timed out"); |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
835 } |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
836 |
1136 | 837 ngx_mail_proxy_close_session(s); |
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
838 return; |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
839 } |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
840 |
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
841 if (c == s->connection) { |
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
842 if (ev->write) { |
583 | 843 recv_action = "proxying and reading from upstream"; |
844 send_action = "proxying and sending to client"; | |
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
845 src = s->proxy->upstream.connection; |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
846 dst = c; |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
847 b = s->proxy->buffer; |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
848 |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
849 } else { |
583 | 850 recv_action = "proxying and reading from client"; |
851 send_action = "proxying and sending to upstream"; | |
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
852 src = c; |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
853 dst = s->proxy->upstream.connection; |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
854 b = s->buffer; |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
855 } |
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
856 |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
857 } else { |
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
858 if (ev->write) { |
589 | 859 recv_action = "proxying and reading from client"; |
860 send_action = "proxying and sending to upstream"; | |
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
861 src = s->connection; |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
862 dst = c; |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
863 b = s->buffer; |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
864 |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
865 } else { |
589 | 866 recv_action = "proxying and reading from upstream"; |
867 send_action = "proxying and sending to client"; | |
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
868 src = c; |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
869 dst = s->connection; |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
870 b = s->proxy->buffer; |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
871 } |
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
872 } |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
873 |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
874 do_write = ev->write ? 1 : 0; |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
875 |
1136 | 876 ngx_log_debug3(NGX_LOG_DEBUG_MAIL, ev->log, 0, |
877 "mail proxy handler: %d, #%d > #%d", | |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
878 do_write, src->fd, dst->fd); |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
879 |
583 | 880 for ( ;; ) { |
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
881 |
583 | 882 if (do_write) { |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
883 |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
884 size = b->last - b->pos; |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
885 |
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
886 if (size && dst->write->ready) { |
583 | 887 c->log->action = send_action; |
888 | |
539 | 889 n = dst->send(dst, b->pos, size); |
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
890 |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
891 if (n == NGX_ERROR) { |
1136 | 892 ngx_mail_proxy_close_session(s); |
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
893 return; |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
894 } |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
895 |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
896 if (n > 0) { |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
897 b->pos += n; |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
898 |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
899 if (b->pos == b->last) { |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
900 b->pos = b->start; |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
901 b->last = b->start; |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
902 } |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
903 } |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
904 } |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
905 } |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
906 |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
907 size = b->end - b->last; |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
908 |
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
909 if (size && src->read->ready) { |
583 | 910 c->log->action = recv_action; |
911 | |
539 | 912 n = src->recv(src, b->last, size); |
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
913 |
583 | 914 if (n == NGX_AGAIN || n == 0) { |
915 break; | |
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
916 } |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
917 |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
918 if (n > 0) { |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
919 do_write = 1; |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
920 b->last += n; |
583 | 921 |
922 continue; | |
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
923 } |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
924 |
583 | 925 if (n == NGX_ERROR) { |
926 src->read->eof = 1; | |
539 | 927 } |
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
928 } |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
929 |
583 | 930 break; |
931 } | |
932 | |
933 c->log->action = "proxying"; | |
934 | |
1342
be2e13691c60
fix case when client has closed connection but upstream buffer is not empty
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
935 if ((s->connection->read->eof && s->buffer->pos == s->buffer->last) |
be2e13691c60
fix case when client has closed connection but upstream buffer is not empty
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
936 || (s->proxy->upstream.connection->read->eof |
be2e13691c60
fix case when client has closed connection but upstream buffer is not empty
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
937 && s->proxy->buffer->pos == s->proxy->buffer->last) |
be2e13691c60
fix case when client has closed connection but upstream buffer is not empty
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
938 || (s->connection->read->eof |
be2e13691c60
fix case when client has closed connection but upstream buffer is not empty
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
939 && s->proxy->upstream.connection->read->eof)) |
583 | 940 { |
941 action = c->log->action; | |
942 c->log->action = NULL; | |
943 ngx_log_error(NGX_LOG_INFO, c->log, 0, "proxied session done"); | |
944 c->log->action = action; | |
945 | |
1136 | 946 ngx_mail_proxy_close_session(s); |
583 | 947 return; |
948 } | |
949 | |
950 if (ngx_handle_write_event(dst->write, 0) == NGX_ERROR) { | |
1136 | 951 ngx_mail_proxy_close_session(s); |
583 | 952 return; |
953 } | |
954 | |
955 if (ngx_handle_read_event(dst->read, 0) == NGX_ERROR) { | |
1136 | 956 ngx_mail_proxy_close_session(s); |
583 | 957 return; |
958 } | |
959 | |
960 if (ngx_handle_write_event(src->write, 0) == NGX_ERROR) { | |
1136 | 961 ngx_mail_proxy_close_session(s); |
583 | 962 return; |
963 } | |
964 | |
965 if (ngx_handle_read_event(src->read, 0) == NGX_ERROR) { | |
1136 | 966 ngx_mail_proxy_close_session(s); |
583 | 967 return; |
968 } | |
969 | |
970 if (c == s->connection) { | |
1136 | 971 pcf = ngx_mail_get_module_srv_conf(s, ngx_mail_proxy_module); |
583 | 972 ngx_add_timer(c->read, pcf->timeout); |
973 } | |
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
974 } |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
975 |
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
976 |
521 | 977 static void |
1136 | 978 ngx_mail_proxy_upstream_error(ngx_mail_session_t *s) |
857 | 979 { |
980 if (s->proxy->upstream.connection) { | |
1136 | 981 ngx_log_debug1(NGX_LOG_DEBUG_MAIL, s->connection->log, 0, |
982 "close mail proxy connection: %d", | |
857 | 983 s->proxy->upstream.connection->fd); |
984 | |
985 ngx_close_connection(s->proxy->upstream.connection); | |
986 } | |
987 | |
988 if (s->out.len == 0) { | |
1136 | 989 ngx_mail_session_internal_server_error(s); |
857 | 990 return; |
991 } | |
992 | |
993 s->quit = 1; | |
1136 | 994 ngx_mail_send(s->connection->write); |
857 | 995 } |
996 | |
997 | |
998 static void | |
1136 | 999 ngx_mail_proxy_internal_server_error(ngx_mail_session_t *s) |
527 | 1000 { |
1001 if (s->proxy->upstream.connection) { | |
1136 | 1002 ngx_log_debug1(NGX_LOG_DEBUG_MAIL, s->connection->log, 0, |
1003 "close mail proxy connection: %d", | |
527 | 1004 s->proxy->upstream.connection->fd); |
1005 | |
1006 ngx_close_connection(s->proxy->upstream.connection); | |
1007 } | |
1008 | |
1136 | 1009 ngx_mail_session_internal_server_error(s); |
527 | 1010 } |
1011 | |
1012 | |
1013 static void | |
1136 | 1014 ngx_mail_proxy_close_session(ngx_mail_session_t *s) |
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
1015 { |
521 | 1016 if (s->proxy->upstream.connection) { |
1136 | 1017 ngx_log_debug1(NGX_LOG_DEBUG_MAIL, s->connection->log, 0, |
1018 "close mail proxy connection: %d", | |
521 | 1019 s->proxy->upstream.connection->fd); |
1020 | |
1021 ngx_close_connection(s->proxy->upstream.connection); | |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
1022 } |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
1023 |
1136 | 1024 ngx_mail_close_connection(s->connection); |
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
1025 } |
521 | 1026 |
1027 | |
1028 static void * | |
1136 | 1029 ngx_mail_proxy_create_conf(ngx_conf_t *cf) |
577 | 1030 { |
1136 | 1031 ngx_mail_proxy_conf_t *pcf; |
577 | 1032 |
1136 | 1033 pcf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_proxy_conf_t)); |
521 | 1034 if (pcf == NULL) { |
1035 return NGX_CONF_ERROR; | |
1036 } | |
1037 | |
1038 pcf->enable = NGX_CONF_UNSET; | |
857 | 1039 pcf->pass_error_message = NGX_CONF_UNSET; |
1136 | 1040 pcf->xclient = NGX_CONF_UNSET; |
539 | 1041 pcf->buffer_size = NGX_CONF_UNSET_SIZE; |
1042 pcf->timeout = NGX_CONF_UNSET_MSEC; | |
521 | 1043 |
1044 return pcf; | |
1045 } | |
1046 | |
1047 | |
1048 static char * | |
1136 | 1049 ngx_mail_proxy_merge_conf(ngx_conf_t *cf, void *parent, void *child) |
521 | 1050 { |
1136 | 1051 ngx_mail_proxy_conf_t *prev = parent; |
1052 ngx_mail_proxy_conf_t *conf = child; | |
521 | 1053 |
539 | 1054 ngx_conf_merge_value(conf->enable, prev->enable, 0); |
857 | 1055 ngx_conf_merge_value(conf->pass_error_message, prev->pass_error_message, 0); |
1136 | 1056 ngx_conf_merge_value(conf->xclient, prev->xclient, 1); |
539 | 1057 ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size, |
1058 (size_t) ngx_pagesize); | |
1059 ngx_conf_merge_msec_value(conf->timeout, prev->timeout, 24 * 60 * 60000); | |
521 | 1060 |
1061 return NGX_CONF_OK; | |
1062 } |