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annotate src/mail/ngx_mail_proxy_module.c @ 1981:65581f79e81b
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| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Tue, 29 Apr 2008 09:35:06 +0000 |
| parents | 057d362ee50e |
| children | 2a92804f4109 |
| 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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12 |
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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 }; | |
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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 | |
| 1136 | 107 static u_char smtp_ok[] = "235 2.0.0 OK" CRLF; |
| 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; | |
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222 |
| 1136 | 223 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, |
| 224 "mail proxy pop3 auth handler"); | |
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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 |
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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); |
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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); |
|
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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"); | |
|
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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; |
| 527 | 256 line.data = ngx_palloc(c->pool, line.len); |
| 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; |
| 501 | 275 line.data = ngx_palloc(c->pool, line.len); |
| 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; | |
| 527 | 372 line.data = ngx_palloc(c->pool, line.len); |
| 373 if (line.data == NULL) { | |
| 1136 | 374 ngx_mail_proxy_internal_server_error(s); |
|
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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; | |
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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; | |
| 391 line.data = ngx_palloc(c->pool, line.len); | |
| 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; |
| 527 | 411 line.data = ngx_palloc(c->pool, line.len); |
| 412 if (line.data == NULL) { | |
| 1136 | 413 ngx_mail_proxy_internal_server_error(s); |
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414 return; |
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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; |
|
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419 |
| 1136 | 420 s->mail_state = ngx_imap_passwd; |
| 527 | 421 break; |
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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; | |
|
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446 } |
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447 |
| 539 | 448 if (c->send(c, line.data, line.len) < (ssize_t) line.len) { |
|
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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); |
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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; |
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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; | |
| 468 ngx_connection_t *c; | |
| 469 ngx_mail_session_t *s; | |
| 470 ngx_mail_proxy_conf_t *pcf; | |
| 471 ngx_mail_core_srv_conf_t *cscf; | |
| 472 | |
| 473 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, | |
| 474 "mail proxy smtp auth handler"); | |
| 475 | |
| 476 c = rev->data; | |
| 477 s = c->data; | |
| 478 | |
| 479 if (rev->timedout) { | |
| 480 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, | |
| 481 "upstream timed out"); | |
| 482 c->timedout = 1; | |
| 483 ngx_mail_proxy_internal_server_error(s); | |
| 484 return; | |
| 485 } | |
| 486 | |
| 487 rc = ngx_mail_proxy_read_response(s, s->mail_state); | |
| 488 | |
| 489 if (rc == NGX_AGAIN) { | |
| 490 return; | |
| 491 } | |
| 492 | |
| 493 if (rc == NGX_ERROR) { | |
| 494 ngx_mail_proxy_upstream_error(s); | |
| 495 return; | |
| 496 } | |
| 497 | |
| 498 switch (s->mail_state) { | |
| 499 | |
| 500 case ngx_smtp_start: | |
| 501 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, "mail proxy send ehlo"); | |
| 502 | |
| 503 s->connection->log->action = "sending HELO/EHLO to upstream"; | |
| 504 | |
| 505 cscf = ngx_mail_get_module_srv_conf(s, ngx_mail_core_module); | |
| 506 | |
| 507 line.len = sizeof("HELO ") - 1 + cscf->server_name.len + 2; | |
| 508 line.data = ngx_palloc(c->pool, line.len); | |
| 509 if (line.data == NULL) { | |
| 510 ngx_mail_proxy_internal_server_error(s); | |
| 511 return; | |
| 512 } | |
| 513 | |
| 514 pcf = ngx_mail_get_module_srv_conf(s, ngx_mail_proxy_module); | |
| 515 | |
| 516 p = ngx_cpymem(line.data, | |
| 517 ((s->esmtp || pcf->xclient) ? "EHLO " : "HELO "), | |
| 518 sizeof("HELO ") - 1); | |
| 519 | |
| 520 p = ngx_cpymem(p, cscf->server_name.data, cscf->server_name.len); | |
| 521 *p++ = CR; *p = LF; | |
| 522 | |
| 523 s->mail_state = pcf->xclient ? ngx_smtp_helo: ngx_smtp_noxclient; | |
| 524 | |
| 525 break; | |
| 526 | |
| 527 case ngx_smtp_helo: | |
| 528 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, | |
| 529 "mail proxy send xclient"); | |
| 530 | |
| 531 s->connection->log->action = "sending XCLIENT to upstream"; | |
| 532 | |
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533 line.len = sizeof("XCLIENT PROTO=SMTP HELO= ADDR= LOGIN= NAME=" |
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534 CRLF) - 1 |
| 1136 | 535 + s->esmtp + s->smtp_helo.len |
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536 + s->connection->addr_text.len + s->login.len + s->host.len; |
| 1136 | 537 |
| 538 line.data = ngx_palloc(c->pool, line.len); | |
| 539 if (line.data == NULL) { | |
| 540 ngx_mail_proxy_internal_server_error(s); | |
| 541 return; | |
| 542 } | |
| 543 | |
| 544 if (s->smtp_helo.len) { | |
| 545 line.len = ngx_sprintf(line.data, | |
| 546 "XCLIENT PROTO=%sSMTP HELO=%V ADDR=%V LOGIN=%V " | |
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547 "NAME=%V" CRLF, |
| 1136 | 548 (s->esmtp ? "E" : ""), &s->smtp_helo, |
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549 &s->connection->addr_text, &s->login, &s->host) |
| 1136 | 550 - line.data; |
| 551 } else { | |
| 552 line.len = ngx_sprintf(line.data, | |
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553 "XCLIENT PROTO=SMTP ADDR=%V LOGIN=%V NAME=%V" CRLF, |
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554 &s->connection->addr_text, &s->login, &s->host) |
| 1136 | 555 - line.data; |
| 556 } | |
| 557 | |
| 558 s->mail_state = ngx_smtp_xclient; | |
| 559 break; | |
| 560 | |
| 561 case ngx_smtp_noxclient: | |
| 562 case ngx_smtp_xclient: | |
| 563 | |
| 564 ngx_memcpy(s->proxy->buffer->start, smtp_ok, sizeof(smtp_ok) - 1); | |
| 565 | |
| 566 s->proxy->buffer->pos = s->proxy->buffer->start; | |
| 567 s->proxy->buffer->last = s->proxy->buffer->start + sizeof(smtp_ok) - 1; | |
| 568 | |
| 569 s->connection->read->handler = ngx_mail_proxy_handler; | |
| 570 s->connection->write->handler = ngx_mail_proxy_handler; | |
| 571 rev->handler = ngx_mail_proxy_handler; | |
| 572 c->write->handler = ngx_mail_proxy_handler; | |
| 573 | |
| 574 pcf = ngx_mail_get_module_srv_conf(s, ngx_mail_proxy_module); | |
| 575 ngx_add_timer(s->connection->read, pcf->timeout); | |
| 576 ngx_del_timer(c->read); | |
| 577 | |
| 578 c->log->action = NULL; | |
| 579 ngx_log_error(NGX_LOG_INFO, c->log, 0, "client logged in"); | |
| 580 | |
| 581 ngx_mail_proxy_handler(s->connection->write); | |
| 582 | |
| 583 return; | |
| 584 | |
| 585 default: | |
| 586 #if (NGX_SUPPRESS_WARN) | |
| 587 line.len = 0; | |
| 588 line.data = NULL; | |
| 589 #endif | |
| 590 break; | |
| 591 } | |
| 592 | |
| 593 if (c->send(c, line.data, line.len) < (ssize_t) line.len) { | |
| 594 /* | |
| 595 * we treat the incomplete sending as NGX_ERROR | |
| 596 * because it is very strange here | |
| 597 */ | |
| 598 ngx_mail_proxy_internal_server_error(s); | |
| 599 return; | |
| 600 } | |
| 601 | |
| 602 s->proxy->buffer->pos = s->proxy->buffer->start; | |
| 603 s->proxy->buffer->last = s->proxy->buffer->start; | |
| 604 } | |
| 605 | |
| 606 | |
| 607 static void | |
| 608 ngx_mail_proxy_dummy_handler(ngx_event_t *wev) | |
|
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609 { |
| 583 | 610 ngx_connection_t *c; |
| 1136 | 611 ngx_mail_session_t *s; |
| 583 | 612 |
| 1136 | 613 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, wev->log, 0, "mail proxy dummy handler"); |
| 583 | 614 |
| 615 if (ngx_handle_write_event(wev, 0) == NGX_ERROR) { | |
| 616 c = wev->data; | |
| 617 s = c->data; | |
| 618 | |
| 1136 | 619 ngx_mail_proxy_close_session(s); |
| 583 | 620 } |
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nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
621 } |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
622 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
623 |
| 521 | 624 static ngx_int_t |
| 1136 | 625 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
|
626 { |
| 857 | 627 u_char *p; |
| 628 ssize_t n; | |
| 629 ngx_buf_t *b; | |
| 1136 | 630 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
|
631 |
| 587 | 632 s->connection->log->action = "reading response from upstream"; |
| 633 | |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
634 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
|
635 |
| 539 | 636 n = s->proxy->upstream.connection->recv(s->proxy->upstream.connection, |
| 637 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
|
638 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
639 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
|
640 return NGX_ERROR; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
641 } |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
642 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
643 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
|
644 return NGX_AGAIN; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
645 } |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
646 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
647 b->last += n; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
648 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
649 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
|
650 return NGX_AGAIN; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
651 } |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
652 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
653 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
|
654 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
|
655 *(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
|
656 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
|
657 "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
|
658 b->pos); |
| 571 | 659 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
|
660 } |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
661 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
662 return NGX_AGAIN; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
663 } |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
664 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
665 p = b->pos; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
666 |
| 1136 | 667 switch (s->protocol) { |
| 668 | |
| 669 case NGX_MAIL_POP3_PROTOCOL: | |
| 527 | 670 if (p[0] == '+' && p[1] == 'O' && p[2] == 'K') { |
| 671 return NGX_OK; | |
| 672 } | |
| 1136 | 673 break; |
| 527 | 674 |
| 1136 | 675 case NGX_MAIL_IMAP_PROTOCOL: |
| 663 | 676 switch (state) { |
| 677 | |
| 678 case ngx_imap_start: | |
| 527 | 679 if (p[0] == '*' && p[1] == ' ' && p[2] == 'O' && p[3] == 'K') { |
| 680 return NGX_OK; | |
| 681 } | |
| 663 | 682 break; |
| 527 | 683 |
| 663 | 684 case ngx_imap_login: |
| 685 case ngx_imap_user: | |
| 529 | 686 if (p[0] == '+') { |
| 527 | 687 return NGX_OK; |
| 688 } | |
| 663 | 689 break; |
| 690 | |
| 691 case ngx_imap_passwd: | |
| 692 if (ngx_strncmp(p, s->tag.data, s->tag.len) == 0) { | |
| 693 p += s->tag.len; | |
| 694 if (p[0] == 'O' && p[1] == 'K') { | |
| 695 return NGX_OK; | |
| 696 } | |
| 697 } | |
| 698 break; | |
| 527 | 699 } |
| 1136 | 700 |
| 701 break; | |
| 702 | |
| 703 default: /* NGX_MAIL_SMTP_PROTOCOL */ | |
| 704 switch (state) { | |
| 705 | |
| 706 case ngx_smtp_helo: | |
| 707 case ngx_smtp_noxclient: | |
| 1166 | 708 if (p[0] == '2' && p[1] == '5' && p[2] == '0') { |
| 709 return NGX_OK; | |
| 710 } | |
| 711 break; | |
| 1136 | 712 |
| 713 case ngx_smtp_start: | |
| 714 case ngx_smtp_xclient: | |
| 1166 | 715 if (p[0] == '2' && p[1] == '2' && p[2] == '0') { |
| 716 return NGX_OK; | |
| 717 } | |
| 718 break; | |
| 1136 | 719 } |
| 720 | |
| 1166 | 721 break; |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
722 } |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
723 |
| 1136 | 724 pcf = ngx_mail_get_module_srv_conf(s, ngx_mail_proxy_module); |
| 857 | 725 |
| 726 if (pcf->pass_error_message == 0) { | |
| 727 *(b->last - 2) = '\0'; | |
| 728 ngx_log_error(NGX_LOG_ERR, s->connection->log, 0, | |
| 729 "upstream sent invalid response: \"%s\"", p); | |
| 730 return NGX_ERROR; | |
| 731 } | |
| 732 | |
| 733 s->out.len = b->last - p - 2; | |
| 734 s->out.data = p; | |
| 735 | |
| 736 ngx_log_error(NGX_LOG_INFO, s->connection->log, 0, | |
| 737 "upstream sent invalid response: \"%V\"", &s->out); | |
| 738 | |
| 739 s->out.len = b->last - b->pos; | |
| 740 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
|
741 |
| 571 | 742 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
|
743 } |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
744 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
745 |
| 521 | 746 static void |
| 1136 | 747 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
|
748 { |
| 583 | 749 char *action, *recv_action, *send_action; |
| 539 | 750 size_t size; |
| 751 ssize_t n; | |
| 752 ngx_buf_t *b; | |
| 583 | 753 ngx_uint_t do_write; |
| 539 | 754 ngx_connection_t *c, *src, *dst; |
| 1136 | 755 ngx_mail_session_t *s; |
| 756 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
|
757 |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
758 c = ev->data; |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
759 s = c->data; |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
760 |
|
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
761 if (ev->timedout) { |
| 583 | 762 c->log->action = "proxying"; |
| 763 | |
|
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
764 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
|
765 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
|
766 "client timed out"); |
| 577 | 767 c->timedout = 1; |
| 768 | |
|
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
769 } else { |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
770 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
|
771 "upstream timed out"); |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
772 } |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
773 |
| 1136 | 774 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
|
775 return; |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
776 } |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
777 |
|
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
778 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
|
779 if (ev->write) { |
| 583 | 780 recv_action = "proxying and reading from upstream"; |
| 781 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
|
782 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
|
783 dst = c; |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
784 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
|
785 |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
786 } else { |
| 583 | 787 recv_action = "proxying and reading from client"; |
| 788 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
|
789 src = c; |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
790 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
|
791 b = s->buffer; |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
792 } |
|
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
793 |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
794 } else { |
|
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
795 if (ev->write) { |
| 589 | 796 recv_action = "proxying and reading from client"; |
| 797 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
|
798 src = s->connection; |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
799 dst = c; |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
800 b = s->buffer; |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
801 |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
802 } else { |
| 589 | 803 recv_action = "proxying and reading from upstream"; |
| 804 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
|
805 src = c; |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
806 dst = s->connection; |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
807 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
|
808 } |
|
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
809 } |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
810 |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
811 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
|
812 |
| 1136 | 813 ngx_log_debug3(NGX_LOG_DEBUG_MAIL, ev->log, 0, |
| 814 "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
|
815 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
|
816 |
| 583 | 817 for ( ;; ) { |
|
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
818 |
| 583 | 819 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
|
820 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
821 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
|
822 |
|
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
823 if (size && dst->write->ready) { |
| 583 | 824 c->log->action = send_action; |
| 825 | |
| 539 | 826 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
|
827 |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
828 if (n == NGX_ERROR) { |
| 1136 | 829 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
|
830 return; |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
831 } |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
832 |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
833 if (n > 0) { |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
834 b->pos += n; |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
835 |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
836 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
|
837 b->pos = b->start; |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
838 b->last = b->start; |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
839 } |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
840 } |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
841 } |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
842 } |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
843 |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
844 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
|
845 |
|
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
846 if (size && src->read->ready) { |
| 583 | 847 c->log->action = recv_action; |
| 848 | |
| 539 | 849 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
|
850 |
| 583 | 851 if (n == NGX_AGAIN || n == 0) { |
| 852 break; | |
|
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
853 } |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
854 |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
855 if (n > 0) { |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
856 do_write = 1; |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
857 b->last += n; |
| 583 | 858 |
| 859 continue; | |
|
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
860 } |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
861 |
| 583 | 862 if (n == NGX_ERROR) { |
| 863 src->read->eof = 1; | |
| 539 | 864 } |
|
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
865 } |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
866 |
| 583 | 867 break; |
| 868 } | |
| 869 | |
| 870 c->log->action = "proxying"; | |
| 871 | |
|
1342
be2e13691c60
fix case when client has closed connection but upstream buffer is not empty
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
872 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
|
873 || (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
|
874 && 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
|
875 || (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
|
876 && s->proxy->upstream.connection->read->eof)) |
| 583 | 877 { |
| 878 action = c->log->action; | |
| 879 c->log->action = NULL; | |
| 880 ngx_log_error(NGX_LOG_INFO, c->log, 0, "proxied session done"); | |
| 881 c->log->action = action; | |
| 882 | |
| 1136 | 883 ngx_mail_proxy_close_session(s); |
| 583 | 884 return; |
| 885 } | |
| 886 | |
| 887 if (ngx_handle_write_event(dst->write, 0) == NGX_ERROR) { | |
| 1136 | 888 ngx_mail_proxy_close_session(s); |
| 583 | 889 return; |
| 890 } | |
| 891 | |
| 892 if (ngx_handle_read_event(dst->read, 0) == NGX_ERROR) { | |
| 1136 | 893 ngx_mail_proxy_close_session(s); |
| 583 | 894 return; |
| 895 } | |
| 896 | |
| 897 if (ngx_handle_write_event(src->write, 0) == NGX_ERROR) { | |
| 1136 | 898 ngx_mail_proxy_close_session(s); |
| 583 | 899 return; |
| 900 } | |
| 901 | |
| 902 if (ngx_handle_read_event(src->read, 0) == NGX_ERROR) { | |
| 1136 | 903 ngx_mail_proxy_close_session(s); |
| 583 | 904 return; |
| 905 } | |
| 906 | |
| 907 if (c == s->connection) { | |
| 1136 | 908 pcf = ngx_mail_get_module_srv_conf(s, ngx_mail_proxy_module); |
| 583 | 909 ngx_add_timer(c->read, pcf->timeout); |
| 910 } | |
|
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
911 } |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
912 |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
913 |
| 521 | 914 static void |
| 1136 | 915 ngx_mail_proxy_upstream_error(ngx_mail_session_t *s) |
| 857 | 916 { |
| 917 if (s->proxy->upstream.connection) { | |
| 1136 | 918 ngx_log_debug1(NGX_LOG_DEBUG_MAIL, s->connection->log, 0, |
| 919 "close mail proxy connection: %d", | |
| 857 | 920 s->proxy->upstream.connection->fd); |
| 921 | |
| 922 ngx_close_connection(s->proxy->upstream.connection); | |
| 923 } | |
| 924 | |
| 925 if (s->out.len == 0) { | |
| 1136 | 926 ngx_mail_session_internal_server_error(s); |
| 857 | 927 return; |
| 928 } | |
| 929 | |
| 930 s->quit = 1; | |
| 1136 | 931 ngx_mail_send(s->connection->write); |
| 857 | 932 } |
| 933 | |
| 934 | |
| 935 static void | |
| 1136 | 936 ngx_mail_proxy_internal_server_error(ngx_mail_session_t *s) |
| 527 | 937 { |
| 938 if (s->proxy->upstream.connection) { | |
| 1136 | 939 ngx_log_debug1(NGX_LOG_DEBUG_MAIL, s->connection->log, 0, |
| 940 "close mail proxy connection: %d", | |
| 527 | 941 s->proxy->upstream.connection->fd); |
| 942 | |
| 943 ngx_close_connection(s->proxy->upstream.connection); | |
| 944 } | |
| 945 | |
| 1136 | 946 ngx_mail_session_internal_server_error(s); |
| 527 | 947 } |
| 948 | |
| 949 | |
| 950 static void | |
| 1136 | 951 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
|
952 { |
| 521 | 953 if (s->proxy->upstream.connection) { |
| 1136 | 954 ngx_log_debug1(NGX_LOG_DEBUG_MAIL, s->connection->log, 0, |
| 955 "close mail proxy connection: %d", | |
| 521 | 956 s->proxy->upstream.connection->fd); |
| 957 | |
| 958 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
|
959 } |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
960 |
| 1136 | 961 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
|
962 } |
| 521 | 963 |
| 964 | |
| 965 static void * | |
| 1136 | 966 ngx_mail_proxy_create_conf(ngx_conf_t *cf) |
| 577 | 967 { |
| 1136 | 968 ngx_mail_proxy_conf_t *pcf; |
| 577 | 969 |
| 1136 | 970 pcf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_proxy_conf_t)); |
| 521 | 971 if (pcf == NULL) { |
| 972 return NGX_CONF_ERROR; | |
| 973 } | |
| 974 | |
| 975 pcf->enable = NGX_CONF_UNSET; | |
| 857 | 976 pcf->pass_error_message = NGX_CONF_UNSET; |
| 1136 | 977 pcf->xclient = NGX_CONF_UNSET; |
| 539 | 978 pcf->buffer_size = NGX_CONF_UNSET_SIZE; |
| 979 pcf->timeout = NGX_CONF_UNSET_MSEC; | |
| 521 | 980 |
| 981 return pcf; | |
| 982 } | |
| 983 | |
| 984 | |
| 985 static char * | |
| 1136 | 986 ngx_mail_proxy_merge_conf(ngx_conf_t *cf, void *parent, void *child) |
| 521 | 987 { |
| 1136 | 988 ngx_mail_proxy_conf_t *prev = parent; |
| 989 ngx_mail_proxy_conf_t *conf = child; | |
| 521 | 990 |
| 539 | 991 ngx_conf_merge_value(conf->enable, prev->enable, 0); |
| 857 | 992 ngx_conf_merge_value(conf->pass_error_message, prev->pass_error_message, 0); |
| 1136 | 993 ngx_conf_merge_value(conf->xclient, prev->xclient, 1); |
| 539 | 994 ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size, |
| 995 (size_t) ngx_pagesize); | |
| 996 ngx_conf_merge_msec_value(conf->timeout, prev->timeout, 24 * 60 * 60000); | |
| 521 | 997 |
| 998 return NGX_CONF_OK; | |
| 999 } |