Mercurial > hg > nginx
annotate src/mail/ngx_mail_proxy_module.c @ 1487:f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Sat, 15 Sep 2007 16:51:16 +0000 |
| parents | be2e13691c60 |
| children | 057d362ee50e |
| 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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ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
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81 NULL, /* protocol */ |
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ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
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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 | |
| 174 switch (s->protocol) { | |
| 527 | 175 |
| 1136 | 176 case NGX_MAIL_POP3_PROTOCOL: |
| 177 p->upstream.connection->read->handler = ngx_mail_proxy_pop3_handler; | |
| 178 s->mail_state = ngx_pop3_start; | |
| 179 break; | |
| 527 | 180 |
| 1136 | 181 case NGX_MAIL_IMAP_PROTOCOL: |
| 182 p->upstream.connection->read->handler = ngx_mail_proxy_imap_handler; | |
| 183 s->mail_state = ngx_imap_start; | |
| 184 break; | |
| 185 | |
| 186 default: /* NGX_MAIL_SMTP_PROTOCOL */ | |
| 187 p->upstream.connection->read->handler = ngx_mail_proxy_smtp_handler; | |
| 188 s->mail_state = ngx_smtp_start; | |
| 189 break; | |
| 527 | 190 } |
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191 } |
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192 |
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193 |
| 521 | 194 static void |
| 1136 | 195 ngx_mail_proxy_block_read(ngx_event_t *rev) |
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196 { |
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197 ngx_connection_t *c; |
| 1136 | 198 ngx_mail_session_t *s; |
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199 |
| 1136 | 200 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, "mail proxy block read"); |
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201 |
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202 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { |
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203 c = rev->data; |
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204 s = c->data; |
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205 |
| 1136 | 206 ngx_mail_proxy_close_session(s); |
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207 } |
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208 } |
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209 |
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210 |
| 521 | 211 static void |
| 1136 | 212 ngx_mail_proxy_pop3_handler(ngx_event_t *rev) |
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213 { |
| 539 | 214 u_char *p; |
| 215 ngx_int_t rc; | |
| 216 ngx_str_t line; | |
| 217 ngx_connection_t *c; | |
| 1136 | 218 ngx_mail_session_t *s; |
| 219 ngx_mail_proxy_conf_t *pcf; | |
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220 |
| 1136 | 221 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, |
| 222 "mail proxy pop3 auth handler"); | |
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223 |
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224 c = rev->data; |
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225 s = c->data; |
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226 |
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227 if (rev->timedout) { |
| 527 | 228 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, |
| 229 "upstream timed out"); | |
| 577 | 230 c->timedout = 1; |
| 1136 | 231 ngx_mail_proxy_internal_server_error(s); |
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232 return; |
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233 } |
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234 |
| 1136 | 235 rc = ngx_mail_proxy_read_response(s, 0); |
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236 |
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237 if (rc == NGX_AGAIN) { |
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238 return; |
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239 } |
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240 |
| 571 | 241 if (rc == NGX_ERROR) { |
| 1136 | 242 ngx_mail_proxy_upstream_error(s); |
|
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243 return; |
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244 } |
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245 |
| 1136 | 246 switch (s->mail_state) { |
| 587 | 247 |
| 1136 | 248 case ngx_pop3_start: |
| 249 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, "mail proxy send user"); | |
|
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250 |
| 587 | 251 s->connection->log->action = "sending user name to upstream"; |
| 252 | |
| 1136 | 253 line.len = sizeof("USER ") - 1 + s->login.len + 2; |
| 527 | 254 line.data = ngx_palloc(c->pool, line.len); |
| 255 if (line.data == NULL) { | |
| 1136 | 256 ngx_mail_proxy_internal_server_error(s); |
| 527 | 257 return; |
| 258 } | |
| 259 | |
| 1136 | 260 p = ngx_cpymem(line.data, "USER ", sizeof("USER ") - 1); |
| 261 p = ngx_cpymem(p, s->login.data, s->login.len); | |
| 262 *p++ = CR; *p = LF; | |
| 527 | 263 |
| 1136 | 264 s->mail_state = ngx_pop3_user; |
| 527 | 265 break; |
| 266 | |
| 1136 | 267 case ngx_pop3_user: |
| 268 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, "mail proxy send pass"); | |
| 527 | 269 |
| 587 | 270 s->connection->log->action = "sending password to upstream"; |
| 271 | |
| 1136 | 272 line.len = sizeof("PASS ") - 1 + s->passwd.len + 2; |
| 501 | 273 line.data = ngx_palloc(c->pool, line.len); |
| 274 if (line.data == NULL) { | |
| 1136 | 275 ngx_mail_proxy_internal_server_error(s); |
| 527 | 276 return; |
| 277 } | |
| 278 | |
| 1136 | 279 p = ngx_cpymem(line.data, "PASS ", sizeof("PASS ") - 1); |
| 280 p = ngx_cpymem(p, s->passwd.data, s->passwd.len); | |
| 527 | 281 *p++ = CR; *p = LF; |
| 282 | |
| 1136 | 283 s->mail_state = ngx_pop3_passwd; |
| 527 | 284 break; |
| 285 | |
| 1136 | 286 case ngx_pop3_passwd: |
| 287 s->connection->read->handler = ngx_mail_proxy_handler; | |
| 288 s->connection->write->handler = ngx_mail_proxy_handler; | |
| 289 rev->handler = ngx_mail_proxy_handler; | |
| 290 c->write->handler = ngx_mail_proxy_handler; | |
| 663 | 291 |
| 1136 | 292 pcf = ngx_mail_get_module_srv_conf(s, ngx_mail_proxy_module); |
| 663 | 293 ngx_add_timer(s->connection->read, pcf->timeout); |
| 294 ngx_del_timer(c->read); | |
| 295 | |
| 296 c->log->action = NULL; | |
| 297 ngx_log_error(NGX_LOG_INFO, c->log, 0, "client logged in"); | |
| 298 | |
| 1136 | 299 ngx_mail_proxy_handler(s->connection->write); |
| 663 | 300 |
| 301 return; | |
| 302 | |
| 527 | 303 default: |
| 304 #if (NGX_SUPPRESS_WARN) | |
| 305 line.len = 0; | |
| 306 line.data = NULL; | |
| 307 #endif | |
| 308 break; | |
| 309 } | |
| 310 | |
| 539 | 311 if (c->send(c, line.data, line.len) < (ssize_t) line.len) { |
| 527 | 312 /* |
| 313 * we treat the incomplete sending as NGX_ERROR | |
| 314 * because it is very strange here | |
| 315 */ | |
| 1136 | 316 ngx_mail_proxy_internal_server_error(s); |
| 527 | 317 return; |
| 318 } | |
| 319 | |
| 320 s->proxy->buffer->pos = s->proxy->buffer->start; | |
| 321 s->proxy->buffer->last = s->proxy->buffer->start; | |
| 322 } | |
| 323 | |
| 324 | |
| 325 static void | |
| 1136 | 326 ngx_mail_proxy_imap_handler(ngx_event_t *rev) |
| 527 | 327 { |
| 539 | 328 u_char *p; |
| 329 ngx_int_t rc; | |
| 330 ngx_str_t line; | |
| 331 ngx_connection_t *c; | |
| 1136 | 332 ngx_mail_session_t *s; |
| 333 ngx_mail_proxy_conf_t *pcf; | |
| 527 | 334 |
| 1136 | 335 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, |
| 336 "mail proxy imap auth handler"); | |
| 527 | 337 |
| 338 c = rev->data; | |
| 339 s = c->data; | |
| 340 | |
| 341 if (rev->timedout) { | |
| 342 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, | |
| 343 "upstream timed out"); | |
| 577 | 344 c->timedout = 1; |
| 1136 | 345 ngx_mail_proxy_internal_server_error(s); |
| 527 | 346 return; |
| 347 } | |
| 348 | |
| 1136 | 349 rc = ngx_mail_proxy_read_response(s, s->mail_state); |
| 527 | 350 |
| 351 if (rc == NGX_AGAIN) { | |
| 352 return; | |
| 353 } | |
| 354 | |
| 571 | 355 if (rc == NGX_ERROR) { |
| 1136 | 356 ngx_mail_proxy_upstream_error(s); |
| 527 | 357 return; |
| 358 } | |
| 359 | |
| 1136 | 360 switch (s->mail_state) { |
| 527 | 361 |
| 1136 | 362 case ngx_imap_start: |
| 363 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, | |
| 364 "mail proxy send login"); | |
| 527 | 365 |
| 1136 | 366 s->connection->log->action = "sending LOGIN command to upstream"; |
| 587 | 367 |
| 1136 | 368 line.len = s->tag.len + sizeof("LOGIN ") - 1 |
| 369 + 1 + NGX_SIZE_T_LEN + 1 + 2; | |
| 527 | 370 line.data = ngx_palloc(c->pool, line.len); |
| 371 if (line.data == NULL) { | |
| 1136 | 372 ngx_mail_proxy_internal_server_error(s); |
|
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373 return; |
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374 } |
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375 |
| 1136 | 376 line.len = ngx_sprintf(line.data, "%VLOGIN {%uz}" CRLF, |
| 377 &s->tag, s->login.len) | |
| 378 - line.data; | |
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379 |
| 1136 | 380 s->mail_state = ngx_imap_login; |
| 527 | 381 break; |
| 382 | |
| 1136 | 383 case ngx_imap_login: |
| 384 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, "mail proxy send user"); | |
| 385 | |
| 386 s->connection->log->action = "sending user name to upstream"; | |
| 387 | |
| 388 line.len = s->login.len + 1 + 1 + NGX_SIZE_T_LEN + 1 + 2; | |
| 389 line.data = ngx_palloc(c->pool, line.len); | |
| 390 if (line.data == NULL) { | |
| 391 ngx_mail_proxy_internal_server_error(s); | |
| 392 return; | |
| 393 } | |
| 394 | |
| 395 line.len = ngx_sprintf(line.data, "%V {%uz}" CRLF, | |
| 396 &s->login, s->passwd.len) | |
| 397 - line.data; | |
| 398 | |
| 399 s->mail_state = ngx_imap_user; | |
| 400 break; | |
| 401 | |
| 402 case ngx_imap_user: | |
| 403 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, | |
| 404 "mail proxy send passwd"); | |
| 527 | 405 |
| 587 | 406 s->connection->log->action = "sending password to upstream"; |
| 407 | |
| 1136 | 408 line.len = s->passwd.len + 2; |
| 527 | 409 line.data = ngx_palloc(c->pool, line.len); |
| 410 if (line.data == NULL) { | |
| 1136 | 411 ngx_mail_proxy_internal_server_error(s); |
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412 return; |
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419
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413 } |
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414 |
| 1136 | 415 p = ngx_cpymem(line.data, s->passwd.data, s->passwd.len); |
| 527 | 416 *p++ = CR; *p = LF; |
|
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417 |
| 1136 | 418 s->mail_state = ngx_imap_passwd; |
| 527 | 419 break; |
|
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420 |
| 1136 | 421 case ngx_imap_passwd: |
| 422 s->connection->read->handler = ngx_mail_proxy_handler; | |
| 423 s->connection->write->handler = ngx_mail_proxy_handler; | |
| 424 rev->handler = ngx_mail_proxy_handler; | |
| 425 c->write->handler = ngx_mail_proxy_handler; | |
| 663 | 426 |
| 1136 | 427 pcf = ngx_mail_get_module_srv_conf(s, ngx_mail_proxy_module); |
| 663 | 428 ngx_add_timer(s->connection->read, pcf->timeout); |
| 429 ngx_del_timer(c->read); | |
| 430 | |
| 431 c->log->action = NULL; | |
| 432 ngx_log_error(NGX_LOG_INFO, c->log, 0, "client logged in"); | |
| 433 | |
| 1136 | 434 ngx_mail_proxy_handler(s->connection->write); |
| 663 | 435 |
| 436 return; | |
| 437 | |
| 527 | 438 default: |
| 439 #if (NGX_SUPPRESS_WARN) | |
| 440 line.len = 0; | |
| 441 line.data = NULL; | |
| 442 #endif | |
| 443 break; | |
|
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444 } |
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445 |
| 539 | 446 if (c->send(c, line.data, line.len) < (ssize_t) line.len) { |
|
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447 /* |
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448 * we treat the incomplete sending as NGX_ERROR |
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449 * because it is very strange here |
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450 */ |
| 1136 | 451 ngx_mail_proxy_internal_server_error(s); |
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452 return; |
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453 } |
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454 |
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455 s->proxy->buffer->pos = s->proxy->buffer->start; |
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456 s->proxy->buffer->last = s->proxy->buffer->start; |
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457 } |
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458 |
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459 |
| 521 | 460 static void |
| 1136 | 461 ngx_mail_proxy_smtp_handler(ngx_event_t *rev) |
| 462 { | |
| 463 u_char *p; | |
| 464 ngx_int_t rc; | |
| 465 ngx_str_t line; | |
| 466 ngx_connection_t *c; | |
| 467 ngx_mail_session_t *s; | |
| 468 ngx_mail_proxy_conf_t *pcf; | |
| 469 ngx_mail_core_srv_conf_t *cscf; | |
| 470 | |
| 471 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, | |
| 472 "mail proxy smtp auth handler"); | |
| 473 | |
| 474 c = rev->data; | |
| 475 s = c->data; | |
| 476 | |
| 477 if (rev->timedout) { | |
| 478 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, | |
| 479 "upstream timed out"); | |
| 480 c->timedout = 1; | |
| 481 ngx_mail_proxy_internal_server_error(s); | |
| 482 return; | |
| 483 } | |
| 484 | |
| 485 rc = ngx_mail_proxy_read_response(s, s->mail_state); | |
| 486 | |
| 487 if (rc == NGX_AGAIN) { | |
| 488 return; | |
| 489 } | |
| 490 | |
| 491 if (rc == NGX_ERROR) { | |
| 492 ngx_mail_proxy_upstream_error(s); | |
| 493 return; | |
| 494 } | |
| 495 | |
| 496 switch (s->mail_state) { | |
| 497 | |
| 498 case ngx_smtp_start: | |
| 499 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, "mail proxy send ehlo"); | |
| 500 | |
| 501 s->connection->log->action = "sending HELO/EHLO to upstream"; | |
| 502 | |
| 503 cscf = ngx_mail_get_module_srv_conf(s, ngx_mail_core_module); | |
| 504 | |
| 505 line.len = sizeof("HELO ") - 1 + cscf->server_name.len + 2; | |
| 506 line.data = ngx_palloc(c->pool, line.len); | |
| 507 if (line.data == NULL) { | |
| 508 ngx_mail_proxy_internal_server_error(s); | |
| 509 return; | |
| 510 } | |
| 511 | |
| 512 pcf = ngx_mail_get_module_srv_conf(s, ngx_mail_proxy_module); | |
| 513 | |
| 514 p = ngx_cpymem(line.data, | |
| 515 ((s->esmtp || pcf->xclient) ? "EHLO " : "HELO "), | |
| 516 sizeof("HELO ") - 1); | |
| 517 | |
| 518 p = ngx_cpymem(p, cscf->server_name.data, cscf->server_name.len); | |
| 519 *p++ = CR; *p = LF; | |
| 520 | |
| 521 s->mail_state = pcf->xclient ? ngx_smtp_helo: ngx_smtp_noxclient; | |
| 522 | |
| 523 break; | |
| 524 | |
| 525 case ngx_smtp_helo: | |
| 526 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, | |
| 527 "mail proxy send xclient"); | |
| 528 | |
| 529 s->connection->log->action = "sending XCLIENT to upstream"; | |
| 530 | |
| 531 line.len = sizeof("XCLIENT PROTO=SMTP HELO= ADDR= LOGIN= " | |
| 532 "NAME=[UNAVAILABLE]" CRLF) - 1 | |
| 533 + s->esmtp + s->smtp_helo.len | |
| 534 + s->connection->addr_text.len + s->login.len; | |
| 535 | |
| 536 line.data = ngx_palloc(c->pool, line.len); | |
| 537 if (line.data == NULL) { | |
| 538 ngx_mail_proxy_internal_server_error(s); | |
| 539 return; | |
| 540 } | |
| 541 | |
| 542 if (s->smtp_helo.len) { | |
| 543 line.len = ngx_sprintf(line.data, | |
| 544 "XCLIENT PROTO=%sSMTP HELO=%V ADDR=%V LOGIN=%V " | |
| 545 "NAME=[UNAVAILABLE]" CRLF, | |
| 546 (s->esmtp ? "E" : ""), &s->smtp_helo, | |
| 547 &s->connection->addr_text, &s->login) | |
| 548 - line.data; | |
| 549 } else { | |
| 550 line.len = ngx_sprintf(line.data, | |
| 551 "XCLIENT PROTO=SMTP ADDR=%V LOGIN=%V " | |
| 552 "NAME=[UNAVAILABLE]" CRLF, | |
| 553 &s->connection->addr_text, &s->login) | |
| 554 - line.data; | |
| 555 } | |
| 556 | |
| 557 s->mail_state = ngx_smtp_xclient; | |
| 558 break; | |
| 559 | |
| 560 case ngx_smtp_noxclient: | |
| 561 case ngx_smtp_xclient: | |
| 562 | |
| 563 ngx_memcpy(s->proxy->buffer->start, smtp_ok, sizeof(smtp_ok) - 1); | |
| 564 | |
| 565 s->proxy->buffer->pos = s->proxy->buffer->start; | |
| 566 s->proxy->buffer->last = s->proxy->buffer->start + sizeof(smtp_ok) - 1; | |
| 567 | |
| 568 s->connection->read->handler = ngx_mail_proxy_handler; | |
| 569 s->connection->write->handler = ngx_mail_proxy_handler; | |
| 570 rev->handler = ngx_mail_proxy_handler; | |
| 571 c->write->handler = ngx_mail_proxy_handler; | |
| 572 | |
| 573 pcf = ngx_mail_get_module_srv_conf(s, ngx_mail_proxy_module); | |
| 574 ngx_add_timer(s->connection->read, pcf->timeout); | |
| 575 ngx_del_timer(c->read); | |
| 576 | |
| 577 c->log->action = NULL; | |
| 578 ngx_log_error(NGX_LOG_INFO, c->log, 0, "client logged in"); | |
| 579 | |
| 580 ngx_mail_proxy_handler(s->connection->write); | |
| 581 | |
| 582 return; | |
| 583 | |
| 584 default: | |
| 585 #if (NGX_SUPPRESS_WARN) | |
| 586 line.len = 0; | |
| 587 line.data = NULL; | |
| 588 #endif | |
| 589 break; | |
| 590 } | |
| 591 | |
| 592 if (c->send(c, line.data, line.len) < (ssize_t) line.len) { | |
| 593 /* | |
| 594 * we treat the incomplete sending as NGX_ERROR | |
| 595 * because it is very strange here | |
| 596 */ | |
| 597 ngx_mail_proxy_internal_server_error(s); | |
| 598 return; | |
| 599 } | |
| 600 | |
| 601 s->proxy->buffer->pos = s->proxy->buffer->start; | |
| 602 s->proxy->buffer->last = s->proxy->buffer->start; | |
| 603 } | |
| 604 | |
| 605 | |
| 606 static void | |
| 607 ngx_mail_proxy_dummy_handler(ngx_event_t *wev) | |
|
419
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608 { |
| 583 | 609 ngx_connection_t *c; |
| 1136 | 610 ngx_mail_session_t *s; |
| 583 | 611 |
| 1136 | 612 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, wev->log, 0, "mail proxy dummy handler"); |
| 583 | 613 |
| 614 if (ngx_handle_write_event(wev, 0) == NGX_ERROR) { | |
| 615 c = wev->data; | |
| 616 s = c->data; | |
| 617 | |
| 1136 | 618 ngx_mail_proxy_close_session(s); |
| 583 | 619 } |
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620 } |
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621 |
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622 |
| 521 | 623 static ngx_int_t |
| 1136 | 624 ngx_mail_proxy_read_response(ngx_mail_session_t *s, ngx_uint_t state) |
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625 { |
| 857 | 626 u_char *p; |
| 627 ssize_t n; | |
| 628 ngx_buf_t *b; | |
| 1136 | 629 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
|
630 |
| 587 | 631 s->connection->log->action = "reading response from upstream"; |
| 632 | |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
633 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
|
634 |
| 539 | 635 n = s->proxy->upstream.connection->recv(s->proxy->upstream.connection, |
| 636 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
|
637 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
638 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
|
639 return NGX_ERROR; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
640 } |
|
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 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
|
643 return NGX_AGAIN; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
644 } |
|
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 b->last += n; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
647 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
648 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
|
649 return NGX_AGAIN; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
650 } |
|
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 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
|
653 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
|
654 *(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
|
655 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
|
656 "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
|
657 b->pos); |
| 571 | 658 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
|
659 } |
|
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 return NGX_AGAIN; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
662 } |
|
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 p = b->pos; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
665 |
| 1136 | 666 switch (s->protocol) { |
| 667 | |
| 668 case NGX_MAIL_POP3_PROTOCOL: | |
| 527 | 669 if (p[0] == '+' && p[1] == 'O' && p[2] == 'K') { |
| 670 return NGX_OK; | |
| 671 } | |
| 1136 | 672 break; |
| 527 | 673 |
| 1136 | 674 case NGX_MAIL_IMAP_PROTOCOL: |
| 663 | 675 switch (state) { |
| 676 | |
| 677 case ngx_imap_start: | |
| 527 | 678 if (p[0] == '*' && p[1] == ' ' && p[2] == 'O' && p[3] == 'K') { |
| 679 return NGX_OK; | |
| 680 } | |
| 663 | 681 break; |
| 527 | 682 |
| 663 | 683 case ngx_imap_login: |
| 684 case ngx_imap_user: | |
| 529 | 685 if (p[0] == '+') { |
| 527 | 686 return NGX_OK; |
| 687 } | |
| 663 | 688 break; |
| 689 | |
| 690 case ngx_imap_passwd: | |
| 691 if (ngx_strncmp(p, s->tag.data, s->tag.len) == 0) { | |
| 692 p += s->tag.len; | |
| 693 if (p[0] == 'O' && p[1] == 'K') { | |
| 694 return NGX_OK; | |
| 695 } | |
| 696 } | |
| 697 break; | |
| 527 | 698 } |
| 1136 | 699 |
| 700 break; | |
| 701 | |
| 702 default: /* NGX_MAIL_SMTP_PROTOCOL */ | |
| 703 switch (state) { | |
| 704 | |
| 705 case ngx_smtp_helo: | |
| 706 case ngx_smtp_noxclient: | |
| 1166 | 707 if (p[0] == '2' && p[1] == '5' && p[2] == '0') { |
| 708 return NGX_OK; | |
| 709 } | |
| 710 break; | |
| 1136 | 711 |
| 712 case ngx_smtp_start: | |
| 713 case ngx_smtp_xclient: | |
| 1166 | 714 if (p[0] == '2' && p[1] == '2' && p[2] == '0') { |
| 715 return NGX_OK; | |
| 716 } | |
| 717 break; | |
| 1136 | 718 } |
| 719 | |
| 1166 | 720 break; |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
721 } |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
722 |
| 1136 | 723 pcf = ngx_mail_get_module_srv_conf(s, ngx_mail_proxy_module); |
| 857 | 724 |
| 725 if (pcf->pass_error_message == 0) { | |
| 726 *(b->last - 2) = '\0'; | |
| 727 ngx_log_error(NGX_LOG_ERR, s->connection->log, 0, | |
| 728 "upstream sent invalid response: \"%s\"", p); | |
| 729 return NGX_ERROR; | |
| 730 } | |
| 731 | |
| 732 s->out.len = b->last - p - 2; | |
| 733 s->out.data = p; | |
| 734 | |
| 735 ngx_log_error(NGX_LOG_INFO, s->connection->log, 0, | |
| 736 "upstream sent invalid response: \"%V\"", &s->out); | |
| 737 | |
| 738 s->out.len = b->last - b->pos; | |
| 739 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
|
740 |
| 571 | 741 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
|
742 } |
|
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 |
| 521 | 745 static void |
| 1136 | 746 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
|
747 { |
| 583 | 748 char *action, *recv_action, *send_action; |
| 539 | 749 size_t size; |
| 750 ssize_t n; | |
| 751 ngx_buf_t *b; | |
| 583 | 752 ngx_uint_t do_write; |
| 539 | 753 ngx_connection_t *c, *src, *dst; |
| 1136 | 754 ngx_mail_session_t *s; |
| 755 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
|
756 |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
757 c = ev->data; |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
758 s = c->data; |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
759 |
|
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
760 if (ev->timedout) { |
| 583 | 761 c->log->action = "proxying"; |
| 762 | |
|
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
763 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
|
764 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
|
765 "client timed out"); |
| 577 | 766 c->timedout = 1; |
| 767 | |
|
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
768 } else { |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
769 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
|
770 "upstream timed out"); |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
771 } |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
772 |
| 1136 | 773 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
|
774 return; |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
775 } |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
776 |
|
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
777 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
|
778 if (ev->write) { |
| 583 | 779 recv_action = "proxying and reading from upstream"; |
| 780 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
|
781 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
|
782 dst = c; |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
783 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
|
784 |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
785 } else { |
| 583 | 786 recv_action = "proxying and reading from client"; |
| 787 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
|
788 src = c; |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
789 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
|
790 b = s->buffer; |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
791 } |
|
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
792 |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
793 } else { |
|
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
794 if (ev->write) { |
| 589 | 795 recv_action = "proxying and reading from client"; |
| 796 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
|
797 src = s->connection; |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
798 dst = c; |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
799 b = s->buffer; |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
800 |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
801 } else { |
| 589 | 802 recv_action = "proxying and reading from upstream"; |
| 803 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
|
804 src = c; |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
805 dst = s->connection; |
|
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
806 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
|
807 } |
|
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
808 } |
|
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 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
|
811 |
| 1136 | 812 ngx_log_debug3(NGX_LOG_DEBUG_MAIL, ev->log, 0, |
| 813 "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
|
814 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
|
815 |
| 583 | 816 for ( ;; ) { |
|
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
817 |
| 583 | 818 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
|
819 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
820 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
|
821 |
|
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
822 if (size && dst->write->ready) { |
| 583 | 823 c->log->action = send_action; |
| 824 | |
| 539 | 825 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
|
826 |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
827 if (n == NGX_ERROR) { |
| 1136 | 828 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
|
829 return; |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
830 } |
|
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 if (n > 0) { |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
833 b->pos += n; |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
834 |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
835 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
|
836 b->pos = b->start; |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
837 b->last = b->start; |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
838 } |
|
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 |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
843 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
|
844 |
|
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
845 if (size && src->read->ready) { |
| 583 | 846 c->log->action = recv_action; |
| 847 | |
| 539 | 848 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
|
849 |
| 583 | 850 if (n == NGX_AGAIN || n == 0) { |
| 851 break; | |
|
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
852 } |
|
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 if (n > 0) { |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
855 do_write = 1; |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
856 b->last += n; |
| 583 | 857 |
| 858 continue; | |
|
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
859 } |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
860 |
| 583 | 861 if (n == NGX_ERROR) { |
| 862 src->read->eof = 1; | |
| 539 | 863 } |
|
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
864 } |
|
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
865 |
| 583 | 866 break; |
| 867 } | |
| 868 | |
| 869 c->log->action = "proxying"; | |
| 870 | |
|
1342
be2e13691c60
fix case when client has closed connection but upstream buffer is not empty
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
871 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
|
872 || (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
|
873 && 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
|
874 || (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
|
875 && s->proxy->upstream.connection->read->eof)) |
| 583 | 876 { |
| 877 action = c->log->action; | |
| 878 c->log->action = NULL; | |
| 879 ngx_log_error(NGX_LOG_INFO, c->log, 0, "proxied session done"); | |
| 880 c->log->action = action; | |
| 881 | |
| 1136 | 882 ngx_mail_proxy_close_session(s); |
| 583 | 883 return; |
| 884 } | |
| 885 | |
| 886 if (ngx_handle_write_event(dst->write, 0) == NGX_ERROR) { | |
| 1136 | 887 ngx_mail_proxy_close_session(s); |
| 583 | 888 return; |
| 889 } | |
| 890 | |
| 891 if (ngx_handle_read_event(dst->read, 0) == NGX_ERROR) { | |
| 1136 | 892 ngx_mail_proxy_close_session(s); |
| 583 | 893 return; |
| 894 } | |
| 895 | |
| 896 if (ngx_handle_write_event(src->write, 0) == NGX_ERROR) { | |
| 1136 | 897 ngx_mail_proxy_close_session(s); |
| 583 | 898 return; |
| 899 } | |
| 900 | |
| 901 if (ngx_handle_read_event(src->read, 0) == NGX_ERROR) { | |
| 1136 | 902 ngx_mail_proxy_close_session(s); |
| 583 | 903 return; |
| 904 } | |
| 905 | |
| 906 if (c == s->connection) { | |
| 1136 | 907 pcf = ngx_mail_get_module_srv_conf(s, ngx_mail_proxy_module); |
| 583 | 908 ngx_add_timer(c->read, pcf->timeout); |
| 909 } | |
|
418
cf072d26d6d6
nginx-0.0.10-2004-09-08-09:18:51 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
910 } |
|
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 |
| 521 | 913 static void |
| 1136 | 914 ngx_mail_proxy_upstream_error(ngx_mail_session_t *s) |
| 857 | 915 { |
| 916 if (s->proxy->upstream.connection) { | |
| 1136 | 917 ngx_log_debug1(NGX_LOG_DEBUG_MAIL, s->connection->log, 0, |
| 918 "close mail proxy connection: %d", | |
| 857 | 919 s->proxy->upstream.connection->fd); |
| 920 | |
| 921 ngx_close_connection(s->proxy->upstream.connection); | |
| 922 } | |
| 923 | |
| 924 if (s->out.len == 0) { | |
| 1136 | 925 ngx_mail_session_internal_server_error(s); |
| 857 | 926 return; |
| 927 } | |
| 928 | |
| 929 s->quit = 1; | |
| 1136 | 930 ngx_mail_send(s->connection->write); |
| 857 | 931 } |
| 932 | |
| 933 | |
| 934 static void | |
| 1136 | 935 ngx_mail_proxy_internal_server_error(ngx_mail_session_t *s) |
| 527 | 936 { |
| 937 if (s->proxy->upstream.connection) { | |
| 1136 | 938 ngx_log_debug1(NGX_LOG_DEBUG_MAIL, s->connection->log, 0, |
| 939 "close mail proxy connection: %d", | |
| 527 | 940 s->proxy->upstream.connection->fd); |
| 941 | |
| 942 ngx_close_connection(s->proxy->upstream.connection); | |
| 943 } | |
| 944 | |
| 1136 | 945 ngx_mail_session_internal_server_error(s); |
| 527 | 946 } |
| 947 | |
| 948 | |
| 949 static void | |
| 1136 | 950 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
|
951 { |
| 521 | 952 if (s->proxy->upstream.connection) { |
| 1136 | 953 ngx_log_debug1(NGX_LOG_DEBUG_MAIL, s->connection->log, 0, |
| 954 "close mail proxy connection: %d", | |
| 521 | 955 s->proxy->upstream.connection->fd); |
| 956 | |
| 957 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
|
958 } |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
418
diff
changeset
|
959 |
| 1136 | 960 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
|
961 } |
| 521 | 962 |
| 963 | |
| 964 static void * | |
| 1136 | 965 ngx_mail_proxy_create_conf(ngx_conf_t *cf) |
| 577 | 966 { |
| 1136 | 967 ngx_mail_proxy_conf_t *pcf; |
| 577 | 968 |
| 1136 | 969 pcf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_proxy_conf_t)); |
| 521 | 970 if (pcf == NULL) { |
| 971 return NGX_CONF_ERROR; | |
| 972 } | |
| 973 | |
| 974 pcf->enable = NGX_CONF_UNSET; | |
| 857 | 975 pcf->pass_error_message = NGX_CONF_UNSET; |
| 1136 | 976 pcf->xclient = NGX_CONF_UNSET; |
| 539 | 977 pcf->buffer_size = NGX_CONF_UNSET_SIZE; |
| 978 pcf->timeout = NGX_CONF_UNSET_MSEC; | |
| 521 | 979 |
| 980 return pcf; | |
| 981 } | |
| 982 | |
| 983 | |
| 984 static char * | |
| 1136 | 985 ngx_mail_proxy_merge_conf(ngx_conf_t *cf, void *parent, void *child) |
| 521 | 986 { |
| 1136 | 987 ngx_mail_proxy_conf_t *prev = parent; |
| 988 ngx_mail_proxy_conf_t *conf = child; | |
| 521 | 989 |
| 539 | 990 ngx_conf_merge_value(conf->enable, prev->enable, 0); |
| 857 | 991 ngx_conf_merge_value(conf->pass_error_message, prev->pass_error_message, 0); |
| 1136 | 992 ngx_conf_merge_value(conf->xclient, prev->xclient, 1); |
| 539 | 993 ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size, |
| 994 (size_t) ngx_pagesize); | |
| 995 ngx_conf_merge_msec_value(conf->timeout, prev->timeout, 24 * 60 * 60000); | |
| 521 | 996 |
| 997 return NGX_CONF_OK; | |
| 998 } |