Mercurial > hg > nginx
annotate src/stream/ngx_stream_proxy_module.c @ 6200:abee77018d3a
Stream: common handler for upstream and downstream.
| author | Roman Arutyunyan <arut@nginx.com> |
|---|---|
| date | Tue, 23 Jun 2015 20:17:47 +0300 |
| parents | fa663739e115 |
| children | 24488e6db782 |
| rev | line source |
|---|---|
| 6115 | 1 |
| 2 /* | |
| 3 * Copyright (C) Roman Arutyunyan | |
| 4 * Copyright (C) Nginx, Inc. | |
| 5 */ | |
| 6 | |
| 7 | |
| 8 #include <ngx_config.h> | |
| 9 #include <ngx_core.h> | |
| 10 #include <ngx_stream.h> | |
| 11 | |
| 12 | |
| 13 typedef void (*ngx_stream_proxy_handler_pt)(ngx_stream_session_t *s); | |
| 14 | |
| 15 | |
| 16 typedef struct { | |
| 17 ngx_msec_t connect_timeout; | |
| 18 ngx_msec_t timeout; | |
| 19 ngx_msec_t next_upstream_timeout; | |
| 20 size_t downstream_buf_size; | |
| 21 size_t upstream_buf_size; | |
| 22 ngx_uint_t next_upstream_tries; | |
| 23 ngx_flag_t next_upstream; | |
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24 ngx_flag_t proxy_protocol; |
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25 ngx_addr_t *local; |
| 6115 | 26 |
| 27 #if (NGX_STREAM_SSL) | |
| 28 ngx_flag_t ssl_enable; | |
| 29 ngx_flag_t ssl_session_reuse; | |
| 30 ngx_uint_t ssl_protocols; | |
| 31 ngx_str_t ssl_ciphers; | |
| 32 ngx_str_t ssl_name; | |
| 33 ngx_flag_t ssl_server_name; | |
| 34 | |
| 35 ngx_flag_t ssl_verify; | |
| 36 ngx_uint_t ssl_verify_depth; | |
| 37 ngx_str_t ssl_trusted_certificate; | |
| 38 ngx_str_t ssl_crl; | |
| 39 ngx_str_t ssl_certificate; | |
| 40 ngx_str_t ssl_certificate_key; | |
| 41 ngx_array_t *ssl_passwords; | |
| 42 | |
| 43 ngx_ssl_t *ssl; | |
| 44 #endif | |
| 45 | |
| 46 ngx_stream_upstream_srv_conf_t *upstream; | |
| 47 } ngx_stream_proxy_srv_conf_t; | |
| 48 | |
| 49 | |
| 50 static void ngx_stream_proxy_handler(ngx_stream_session_t *s); | |
| 51 static void ngx_stream_proxy_connect(ngx_stream_session_t *s); | |
| 52 static void ngx_stream_proxy_init_upstream(ngx_stream_session_t *s); | |
| 53 static void ngx_stream_proxy_upstream_handler(ngx_event_t *ev); | |
| 54 static void ngx_stream_proxy_downstream_handler(ngx_event_t *ev); | |
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55 static void ngx_stream_proxy_process_connection(ngx_event_t *ev, |
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56 ngx_uint_t from_upstream); |
| 6115 | 57 static void ngx_stream_proxy_connect_handler(ngx_event_t *ev); |
| 58 static ngx_int_t ngx_stream_proxy_test_connect(ngx_connection_t *c); | |
| 59 static ngx_int_t ngx_stream_proxy_process(ngx_stream_session_t *s, | |
| 60 ngx_uint_t from_upstream, ngx_uint_t do_write); | |
| 61 static void ngx_stream_proxy_next_upstream(ngx_stream_session_t *s); | |
| 62 static void ngx_stream_proxy_finalize(ngx_stream_session_t *s, ngx_int_t rc); | |
| 63 static u_char *ngx_stream_proxy_log_error(ngx_log_t *log, u_char *buf, | |
| 64 size_t len); | |
| 65 | |
| 66 static void *ngx_stream_proxy_create_srv_conf(ngx_conf_t *cf); | |
| 67 static char *ngx_stream_proxy_merge_srv_conf(ngx_conf_t *cf, void *parent, | |
| 68 void *child); | |
| 69 static char *ngx_stream_proxy_pass(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 70 void *conf); | |
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71 static char *ngx_stream_proxy_bind(ngx_conf_t *cf, ngx_command_t *cmd, |
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72 void *conf); |
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73 static ngx_int_t ngx_stream_proxy_send_proxy_protocol(ngx_stream_session_t *s); |
| 6115 | 74 |
| 75 #if (NGX_STREAM_SSL) | |
| 76 | |
| 77 static char *ngx_stream_proxy_ssl_password_file(ngx_conf_t *cf, | |
| 78 ngx_command_t *cmd, void *conf); | |
| 79 static void ngx_stream_proxy_ssl_init_connection(ngx_stream_session_t *s); | |
| 80 static void ngx_stream_proxy_ssl_handshake(ngx_connection_t *pc); | |
| 81 static ngx_int_t ngx_stream_proxy_ssl_name(ngx_stream_session_t *s); | |
| 82 static ngx_int_t ngx_stream_proxy_set_ssl(ngx_conf_t *cf, | |
| 83 ngx_stream_proxy_srv_conf_t *pscf); | |
| 84 | |
| 85 | |
| 86 static ngx_conf_bitmask_t ngx_stream_proxy_ssl_protocols[] = { | |
| 87 { ngx_string("SSLv2"), NGX_SSL_SSLv2 }, | |
| 88 { ngx_string("SSLv3"), NGX_SSL_SSLv3 }, | |
| 89 { ngx_string("TLSv1"), NGX_SSL_TLSv1 }, | |
| 90 { ngx_string("TLSv1.1"), NGX_SSL_TLSv1_1 }, | |
| 91 { ngx_string("TLSv1.2"), NGX_SSL_TLSv1_2 }, | |
| 92 { ngx_null_string, 0 } | |
| 93 }; | |
| 94 | |
| 95 #endif | |
| 96 | |
| 97 | |
| 98 static ngx_command_t ngx_stream_proxy_commands[] = { | |
| 99 | |
| 100 { ngx_string("proxy_pass"), | |
| 101 NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, | |
| 102 ngx_stream_proxy_pass, | |
| 103 NGX_STREAM_SRV_CONF_OFFSET, | |
| 104 0, | |
| 105 NULL }, | |
| 106 | |
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107 { ngx_string("proxy_bind"), |
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108 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, |
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109 ngx_stream_proxy_bind, |
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110 NGX_STREAM_SRV_CONF_OFFSET, |
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111 0, |
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112 NULL }, |
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113 |
| 6115 | 114 { ngx_string("proxy_connect_timeout"), |
| 115 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, | |
| 116 ngx_conf_set_msec_slot, | |
| 117 NGX_STREAM_SRV_CONF_OFFSET, | |
| 118 offsetof(ngx_stream_proxy_srv_conf_t, connect_timeout), | |
| 119 NULL }, | |
| 120 | |
| 121 { ngx_string("proxy_timeout"), | |
| 122 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, | |
| 123 ngx_conf_set_msec_slot, | |
| 124 NGX_STREAM_SRV_CONF_OFFSET, | |
| 125 offsetof(ngx_stream_proxy_srv_conf_t, timeout), | |
| 126 NULL }, | |
| 127 | |
| 128 { ngx_string("proxy_downstream_buffer"), | |
| 129 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, | |
| 130 ngx_conf_set_size_slot, | |
| 131 NGX_STREAM_SRV_CONF_OFFSET, | |
| 132 offsetof(ngx_stream_proxy_srv_conf_t, downstream_buf_size), | |
| 133 NULL }, | |
| 134 | |
| 135 { ngx_string("proxy_upstream_buffer"), | |
| 136 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, | |
| 137 ngx_conf_set_size_slot, | |
| 138 NGX_STREAM_SRV_CONF_OFFSET, | |
| 139 offsetof(ngx_stream_proxy_srv_conf_t, upstream_buf_size), | |
| 140 NULL }, | |
| 141 | |
| 142 { ngx_string("proxy_next_upstream"), | |
| 143 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_FLAG, | |
| 144 ngx_conf_set_flag_slot, | |
| 145 NGX_STREAM_SRV_CONF_OFFSET, | |
| 146 offsetof(ngx_stream_proxy_srv_conf_t, next_upstream), | |
| 147 NULL }, | |
| 148 | |
| 149 { ngx_string("proxy_next_upstream_tries"), | |
| 150 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, | |
| 151 ngx_conf_set_num_slot, | |
| 152 NGX_STREAM_SRV_CONF_OFFSET, | |
| 153 offsetof(ngx_stream_proxy_srv_conf_t, next_upstream_tries), | |
| 154 NULL }, | |
| 155 | |
| 156 { ngx_string("proxy_next_upstream_timeout"), | |
| 157 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, | |
| 158 ngx_conf_set_msec_slot, | |
| 159 NGX_STREAM_SRV_CONF_OFFSET, | |
| 160 offsetof(ngx_stream_proxy_srv_conf_t, next_upstream_timeout), | |
| 161 NULL }, | |
| 162 | |
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163 { ngx_string("proxy_protocol"), |
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164 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_FLAG, |
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165 ngx_conf_set_flag_slot, |
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166 NGX_STREAM_SRV_CONF_OFFSET, |
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167 offsetof(ngx_stream_proxy_srv_conf_t, proxy_protocol), |
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168 NULL }, |
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169 |
| 6115 | 170 #if (NGX_STREAM_SSL) |
| 171 | |
| 172 { ngx_string("proxy_ssl"), | |
| 173 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_FLAG, | |
| 174 ngx_conf_set_flag_slot, | |
| 175 NGX_STREAM_SRV_CONF_OFFSET, | |
| 176 offsetof(ngx_stream_proxy_srv_conf_t, ssl_enable), | |
| 177 NULL }, | |
| 178 | |
| 179 { ngx_string("proxy_ssl_session_reuse"), | |
| 180 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_FLAG, | |
| 181 ngx_conf_set_flag_slot, | |
| 182 NGX_STREAM_SRV_CONF_OFFSET, | |
| 183 offsetof(ngx_stream_proxy_srv_conf_t, ssl_session_reuse), | |
| 184 NULL }, | |
| 185 | |
| 186 { ngx_string("proxy_ssl_protocols"), | |
| 187 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_1MORE, | |
| 188 ngx_conf_set_bitmask_slot, | |
| 189 NGX_STREAM_SRV_CONF_OFFSET, | |
| 190 offsetof(ngx_stream_proxy_srv_conf_t, ssl_protocols), | |
| 191 &ngx_stream_proxy_ssl_protocols }, | |
| 192 | |
| 193 { ngx_string("proxy_ssl_ciphers"), | |
| 194 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, | |
| 195 ngx_conf_set_str_slot, | |
| 196 NGX_STREAM_SRV_CONF_OFFSET, | |
| 197 offsetof(ngx_stream_proxy_srv_conf_t, ssl_ciphers), | |
| 198 NULL }, | |
| 199 | |
| 200 { ngx_string("proxy_ssl_name"), | |
| 201 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, | |
| 202 ngx_conf_set_str_slot, | |
| 203 NGX_STREAM_SRV_CONF_OFFSET, | |
| 204 offsetof(ngx_stream_proxy_srv_conf_t, ssl_name), | |
| 205 NULL }, | |
| 206 | |
| 207 { ngx_string("proxy_ssl_server_name"), | |
| 208 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_FLAG, | |
| 209 ngx_conf_set_flag_slot, | |
| 210 NGX_STREAM_SRV_CONF_OFFSET, | |
| 211 offsetof(ngx_stream_proxy_srv_conf_t, ssl_server_name), | |
| 212 NULL }, | |
| 213 | |
| 214 { ngx_string("proxy_ssl_verify"), | |
| 215 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_FLAG, | |
| 216 ngx_conf_set_flag_slot, | |
| 217 NGX_STREAM_SRV_CONF_OFFSET, | |
| 218 offsetof(ngx_stream_proxy_srv_conf_t, ssl_verify), | |
| 219 NULL }, | |
| 220 | |
| 221 { ngx_string("proxy_ssl_verify_depth"), | |
| 222 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, | |
| 223 ngx_conf_set_num_slot, | |
| 224 NGX_STREAM_SRV_CONF_OFFSET, | |
| 225 offsetof(ngx_stream_proxy_srv_conf_t, ssl_verify_depth), | |
| 226 NULL }, | |
| 227 | |
| 228 { ngx_string("proxy_ssl_trusted_certificate"), | |
| 229 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, | |
| 230 ngx_conf_set_str_slot, | |
| 231 NGX_STREAM_SRV_CONF_OFFSET, | |
| 232 offsetof(ngx_stream_proxy_srv_conf_t, ssl_trusted_certificate), | |
| 233 NULL }, | |
| 234 | |
| 235 { ngx_string("proxy_ssl_crl"), | |
| 236 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, | |
| 237 ngx_conf_set_str_slot, | |
| 238 NGX_STREAM_SRV_CONF_OFFSET, | |
| 239 offsetof(ngx_stream_proxy_srv_conf_t, ssl_crl), | |
| 240 NULL }, | |
| 241 | |
| 242 { ngx_string("proxy_ssl_certificate"), | |
| 243 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, | |
| 244 ngx_conf_set_str_slot, | |
| 245 NGX_STREAM_SRV_CONF_OFFSET, | |
| 246 offsetof(ngx_stream_proxy_srv_conf_t, ssl_certificate), | |
| 247 NULL }, | |
| 248 | |
| 249 { ngx_string("proxy_ssl_certificate_key"), | |
| 250 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, | |
| 251 ngx_conf_set_str_slot, | |
| 252 NGX_STREAM_SRV_CONF_OFFSET, | |
| 253 offsetof(ngx_stream_proxy_srv_conf_t, ssl_certificate_key), | |
| 254 NULL }, | |
| 255 | |
| 256 { ngx_string("proxy_ssl_password_file"), | |
| 257 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, | |
| 258 ngx_stream_proxy_ssl_password_file, | |
| 259 NGX_STREAM_SRV_CONF_OFFSET, | |
| 260 0, | |
| 261 NULL }, | |
| 262 | |
| 263 #endif | |
| 264 | |
| 265 ngx_null_command | |
| 266 }; | |
| 267 | |
| 268 | |
| 269 static ngx_stream_module_t ngx_stream_proxy_module_ctx = { | |
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270 NULL, /* postconfiguration */ |
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271 |
| 6115 | 272 NULL, /* create main configuration */ |
| 273 NULL, /* init main configuration */ | |
| 274 | |
| 275 ngx_stream_proxy_create_srv_conf, /* create server configuration */ | |
| 276 ngx_stream_proxy_merge_srv_conf /* merge server configuration */ | |
| 277 }; | |
| 278 | |
| 279 | |
| 280 ngx_module_t ngx_stream_proxy_module = { | |
| 281 NGX_MODULE_V1, | |
| 282 &ngx_stream_proxy_module_ctx, /* module context */ | |
| 283 ngx_stream_proxy_commands, /* module directives */ | |
| 284 NGX_STREAM_MODULE, /* module type */ | |
| 285 NULL, /* init master */ | |
| 286 NULL, /* init module */ | |
| 287 NULL, /* init process */ | |
| 288 NULL, /* init thread */ | |
| 289 NULL, /* exit thread */ | |
| 290 NULL, /* exit process */ | |
| 291 NULL, /* exit master */ | |
| 292 NGX_MODULE_V1_PADDING | |
| 293 }; | |
| 294 | |
| 295 | |
| 296 static void | |
| 297 ngx_stream_proxy_handler(ngx_stream_session_t *s) | |
| 298 { | |
| 299 u_char *p; | |
| 300 ngx_connection_t *c; | |
| 301 ngx_stream_upstream_t *u; | |
| 302 ngx_stream_proxy_srv_conf_t *pscf; | |
| 303 ngx_stream_upstream_srv_conf_t *uscf; | |
| 304 | |
| 305 c = s->connection; | |
| 306 | |
| 307 pscf = ngx_stream_get_module_srv_conf(s, ngx_stream_proxy_module); | |
| 308 | |
| 309 ngx_log_debug0(NGX_LOG_DEBUG_STREAM, c->log, 0, | |
| 310 "proxy connection handler"); | |
| 311 | |
| 312 u = ngx_pcalloc(c->pool, sizeof(ngx_stream_upstream_t)); | |
| 313 if (u == NULL) { | |
| 314 ngx_stream_proxy_finalize(s, NGX_ERROR); | |
| 315 return; | |
| 316 } | |
| 317 | |
| 318 s->upstream = u; | |
| 319 | |
| 320 s->log_handler = ngx_stream_proxy_log_error; | |
| 321 | |
| 322 u->peer.log = c->log; | |
| 323 u->peer.log_error = NGX_ERROR_ERR; | |
| 324 | |
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325 u->peer.local = pscf->local; |
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326 |
| 6115 | 327 uscf = pscf->upstream; |
| 328 | |
| 329 if (uscf->peer.init(s, uscf) != NGX_OK) { | |
| 330 ngx_stream_proxy_finalize(s, NGX_ERROR); | |
| 331 return; | |
| 332 } | |
| 333 | |
| 334 u->peer.start_time = ngx_current_msec; | |
| 335 | |
| 336 if (pscf->next_upstream_tries | |
| 337 && u->peer.tries > pscf->next_upstream_tries) | |
| 338 { | |
| 339 u->peer.tries = pscf->next_upstream_tries; | |
| 340 } | |
| 341 | |
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342 u->proxy_protocol = pscf->proxy_protocol; |
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343 |
| 6115 | 344 p = ngx_pnalloc(c->pool, pscf->downstream_buf_size); |
| 345 if (p == NULL) { | |
| 346 ngx_stream_proxy_finalize(s, NGX_ERROR); | |
| 347 return; | |
| 348 } | |
| 349 | |
| 350 u->downstream_buf.start = p; | |
| 351 u->downstream_buf.end = p + pscf->downstream_buf_size; | |
| 352 u->downstream_buf.pos = p; | |
| 353 u->downstream_buf.last = p; | |
| 354 | |
| 355 c->write->handler = ngx_stream_proxy_downstream_handler; | |
| 356 c->read->handler = ngx_stream_proxy_downstream_handler; | |
| 357 | |
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358 if (u->proxy_protocol |
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359 #if (NGX_STREAM_SSL) |
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360 && pscf->ssl == NULL |
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361 #endif |
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362 && pscf->downstream_buf_size >= NGX_PROXY_PROTOCOL_MAX_HEADER |
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363 ) |
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364 { |
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365 /* optimization for a typical case */ |
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366 |
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367 ngx_log_debug0(NGX_LOG_DEBUG_STREAM, c->log, 0, |
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368 "stream proxy send PROXY protocol header"); |
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369 |
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370 p = ngx_proxy_protocol_write(c, u->downstream_buf.last, |
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371 u->downstream_buf.end); |
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372 if (p == NULL) { |
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373 ngx_stream_proxy_finalize(s, NGX_ERROR); |
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374 return; |
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375 } |
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376 |
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377 u->downstream_buf.last = p; |
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378 u->proxy_protocol = 0; |
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379 } |
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380 |
| 6115 | 381 if (ngx_stream_proxy_process(s, 0, 0) != NGX_OK) { |
| 382 return; | |
| 383 } | |
| 384 | |
| 385 ngx_stream_proxy_connect(s); | |
| 386 } | |
| 387 | |
| 388 | |
| 389 static void | |
| 390 ngx_stream_proxy_connect(ngx_stream_session_t *s) | |
| 391 { | |
| 392 ngx_int_t rc; | |
| 393 ngx_connection_t *c, *pc; | |
| 394 ngx_stream_upstream_t *u; | |
| 395 ngx_stream_proxy_srv_conf_t *pscf; | |
| 396 | |
| 397 c = s->connection; | |
| 398 | |
| 399 c->log->action = "connecting to upstream"; | |
| 400 | |
| 401 u = s->upstream; | |
| 402 | |
| 403 rc = ngx_event_connect_peer(&u->peer); | |
| 404 | |
| 405 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, c->log, 0, "proxy connect: %i", rc); | |
| 406 | |
| 407 pscf = ngx_stream_get_module_srv_conf(s, ngx_stream_proxy_module); | |
| 408 | |
| 409 if (rc == NGX_ERROR) { | |
| 410 ngx_stream_proxy_finalize(s, NGX_ERROR); | |
| 411 return; | |
| 412 } | |
| 413 | |
| 414 if (rc == NGX_BUSY) { | |
| 415 ngx_log_error(NGX_LOG_ERR, c->log, 0, "no live upstreams"); | |
| 416 ngx_stream_proxy_finalize(s, NGX_DECLINED); | |
| 417 return; | |
| 418 } | |
| 419 | |
| 420 if (rc == NGX_DECLINED) { | |
| 421 ngx_stream_proxy_next_upstream(s); | |
| 422 return; | |
| 423 } | |
| 424 | |
| 425 /* rc == NGX_OK || rc == NGX_AGAIN || rc == NGX_DONE */ | |
| 426 | |
| 427 pc = u->peer.connection; | |
| 428 | |
| 429 pc->data = s; | |
| 430 pc->log = c->log; | |
| 431 pc->pool = c->pool; | |
| 432 pc->read->log = c->log; | |
| 433 pc->write->log = c->log; | |
| 434 | |
| 435 if (rc != NGX_AGAIN) { | |
| 436 ngx_stream_proxy_init_upstream(s); | |
| 437 return; | |
| 438 } | |
| 439 | |
| 440 pc->read->handler = ngx_stream_proxy_connect_handler; | |
| 441 pc->write->handler = ngx_stream_proxy_connect_handler; | |
| 442 | |
| 443 ngx_add_timer(pc->write, pscf->connect_timeout); | |
| 444 } | |
| 445 | |
| 446 | |
| 447 static void | |
| 448 ngx_stream_proxy_init_upstream(ngx_stream_session_t *s) | |
| 449 { | |
| 450 u_char *p; | |
| 451 ngx_connection_t *c, *pc; | |
| 452 ngx_log_handler_pt handler; | |
| 453 ngx_stream_upstream_t *u; | |
| 454 ngx_stream_proxy_srv_conf_t *pscf; | |
| 455 | |
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456 u = s->upstream; |
| 6115 | 457 |
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458 if (u->proxy_protocol) { |
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459 if (ngx_stream_proxy_send_proxy_protocol(s) != NGX_OK) { |
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460 return; |
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461 } |
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462 |
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463 u->proxy_protocol = 0; |
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464 } |
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465 |
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466 pscf = ngx_stream_get_module_srv_conf(s, ngx_stream_proxy_module); |
| 6115 | 467 |
| 468 pc = u->peer.connection; | |
| 469 | |
| 470 #if (NGX_STREAM_SSL) | |
| 471 if (pscf->ssl && pc->ssl == NULL) { | |
| 472 ngx_stream_proxy_ssl_init_connection(s); | |
| 473 return; | |
| 474 } | |
| 475 #endif | |
| 476 | |
| 477 c = s->connection; | |
| 478 | |
| 479 if (c->log->log_level >= NGX_LOG_INFO) { | |
| 480 ngx_str_t s; | |
| 481 u_char addr[NGX_SOCKADDR_STRLEN]; | |
| 482 | |
| 483 s.len = NGX_SOCKADDR_STRLEN; | |
| 484 s.data = addr; | |
| 485 | |
| 486 if (ngx_connection_local_sockaddr(pc, &s, 1) == NGX_OK) { | |
| 487 handler = c->log->handler; | |
| 488 c->log->handler = NULL; | |
| 489 | |
| 490 ngx_log_error(NGX_LOG_INFO, c->log, 0, "proxy %V connected to %V", | |
| 491 &s, u->peer.name); | |
| 492 | |
| 493 c->log->handler = handler; | |
| 494 } | |
| 495 } | |
| 496 | |
| 497 c->log->action = "proxying connection"; | |
| 498 | |
| 499 p = ngx_pnalloc(c->pool, pscf->upstream_buf_size); | |
| 500 if (p == NULL) { | |
| 501 ngx_stream_proxy_finalize(s, NGX_ERROR); | |
| 502 return; | |
| 503 } | |
| 504 | |
| 505 u->upstream_buf.start = p; | |
| 506 u->upstream_buf.end = p + pscf->upstream_buf_size; | |
| 507 u->upstream_buf.pos = p; | |
| 508 u->upstream_buf.last = p; | |
| 509 | |
| 510 pc->read->handler = ngx_stream_proxy_upstream_handler; | |
| 511 pc->write->handler = ngx_stream_proxy_upstream_handler; | |
| 512 | |
| 513 if (ngx_stream_proxy_process(s, 1, 0) != NGX_OK) { | |
| 514 return; | |
| 515 } | |
| 516 | |
| 517 ngx_stream_proxy_process(s, 0, 1); | |
| 518 } | |
| 519 | |
| 520 | |
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521 static ngx_int_t |
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522 ngx_stream_proxy_send_proxy_protocol(ngx_stream_session_t *s) |
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523 { |
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524 u_char *p; |
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525 ssize_t n, size; |
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526 ngx_connection_t *c, *pc; |
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527 ngx_stream_upstream_t *u; |
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528 ngx_stream_proxy_srv_conf_t *pscf; |
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529 u_char buf[NGX_PROXY_PROTOCOL_MAX_HEADER]; |
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530 |
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531 c = s->connection; |
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532 |
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533 ngx_log_debug0(NGX_LOG_DEBUG_STREAM, c->log, 0, |
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534 "stream proxy send PROXY protocol header"); |
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535 |
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536 p = ngx_proxy_protocol_write(c, buf, buf + NGX_PROXY_PROTOCOL_MAX_HEADER); |
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537 if (p == NULL) { |
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538 ngx_stream_proxy_finalize(s, NGX_ERROR); |
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539 return NGX_ERROR; |
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540 } |
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541 |
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542 u = s->upstream; |
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543 |
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544 pc = u->peer.connection; |
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545 |
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546 size = p - buf; |
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547 |
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548 n = pc->send(pc, buf, size); |
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549 |
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550 if (n == NGX_AGAIN) { |
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551 if (ngx_handle_write_event(pc->write, 0) != NGX_OK) { |
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552 ngx_stream_proxy_finalize(s, NGX_ERROR); |
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553 return NGX_ERROR; |
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554 } |
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555 |
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556 pscf = ngx_stream_get_module_srv_conf(s, ngx_stream_proxy_module); |
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557 |
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558 ngx_add_timer(pc->write, pscf->timeout); |
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559 |
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560 pc->write->handler = ngx_stream_proxy_connect_handler; |
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561 |
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562 return NGX_AGAIN; |
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563 } |
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564 |
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565 if (n == NGX_ERROR) { |
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566 ngx_stream_proxy_finalize(s, NGX_DECLINED); |
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567 return NGX_ERROR; |
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568 } |
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569 |
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570 if (n != size) { |
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571 |
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572 /* |
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573 * PROXY protocol specification: |
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574 * The sender must always ensure that the header |
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575 * is sent at once, so that the transport layer |
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576 * maintains atomicity along the path to the receiver. |
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577 */ |
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578 |
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579 ngx_log_error(NGX_LOG_ERR, c->log, 0, |
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580 "could not send PROXY protocol header at once"); |
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581 |
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582 ngx_stream_proxy_finalize(s, NGX_DECLINED); |
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583 |
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584 return NGX_ERROR; |
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585 } |
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586 |
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587 return NGX_OK; |
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588 } |
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589 |
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590 |
| 6115 | 591 #if (NGX_STREAM_SSL) |
| 592 | |
| 593 static char * | |
| 594 ngx_stream_proxy_ssl_password_file(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 595 void *conf) | |
| 596 { | |
| 597 ngx_stream_proxy_srv_conf_t *pscf = conf; | |
| 598 | |
| 599 ngx_str_t *value; | |
| 600 | |
| 601 if (pscf->ssl_passwords != NGX_CONF_UNSET_PTR) { | |
| 602 return "is duplicate"; | |
| 603 } | |
| 604 | |
| 605 value = cf->args->elts; | |
| 606 | |
| 607 pscf->ssl_passwords = ngx_ssl_read_password_file(cf, &value[1]); | |
| 608 | |
| 609 if (pscf->ssl_passwords == NULL) { | |
| 610 return NGX_CONF_ERROR; | |
| 611 } | |
| 612 | |
| 613 return NGX_CONF_OK; | |
| 614 } | |
| 615 | |
| 616 | |
| 617 static void | |
| 618 ngx_stream_proxy_ssl_init_connection(ngx_stream_session_t *s) | |
| 619 { | |
| 620 ngx_int_t rc; | |
| 621 ngx_connection_t *pc; | |
| 622 ngx_stream_upstream_t *u; | |
| 623 ngx_stream_proxy_srv_conf_t *pscf; | |
| 624 | |
| 625 u = s->upstream; | |
| 626 | |
| 627 pc = u->peer.connection; | |
| 628 | |
| 629 pscf = ngx_stream_get_module_srv_conf(s, ngx_stream_proxy_module); | |
| 630 | |
| 631 if (ngx_ssl_create_connection(pscf->ssl, pc, NGX_SSL_BUFFER|NGX_SSL_CLIENT) | |
| 632 != NGX_OK) | |
| 633 { | |
| 634 ngx_stream_proxy_finalize(s, NGX_ERROR); | |
| 635 return; | |
| 636 } | |
| 637 | |
| 638 if (pscf->ssl_server_name || pscf->ssl_verify) { | |
| 639 if (ngx_stream_proxy_ssl_name(s) != NGX_OK) { | |
| 640 ngx_stream_proxy_finalize(s, NGX_ERROR); | |
| 641 return; | |
| 642 } | |
| 643 } | |
| 644 | |
| 645 if (pscf->ssl_session_reuse) { | |
| 646 if (u->peer.set_session(&u->peer, u->peer.data) != NGX_OK) { | |
| 647 ngx_stream_proxy_finalize(s, NGX_ERROR); | |
| 648 return; | |
| 649 } | |
| 650 } | |
| 651 | |
| 652 s->connection->log->action = "SSL handshaking to upstream"; | |
| 653 | |
| 654 rc = ngx_ssl_handshake(pc); | |
| 655 | |
| 656 if (rc == NGX_AGAIN) { | |
| 657 | |
| 658 if (!pc->write->timer_set) { | |
| 659 ngx_add_timer(pc->write, pscf->connect_timeout); | |
| 660 } | |
| 661 | |
| 662 pc->ssl->handler = ngx_stream_proxy_ssl_handshake; | |
| 663 return; | |
| 664 } | |
| 665 | |
| 666 ngx_stream_proxy_ssl_handshake(pc); | |
| 667 } | |
| 668 | |
| 669 | |
| 670 static void | |
| 671 ngx_stream_proxy_ssl_handshake(ngx_connection_t *pc) | |
| 672 { | |
| 673 long rc; | |
| 674 ngx_stream_session_t *s; | |
| 675 ngx_stream_upstream_t *u; | |
| 676 ngx_stream_proxy_srv_conf_t *pscf; | |
| 677 | |
| 678 s = pc->data; | |
| 679 | |
| 680 pscf = ngx_stream_get_module_srv_conf(s, ngx_stream_proxy_module); | |
| 681 | |
| 682 if (pc->ssl->handshaked) { | |
| 683 | |
| 684 if (pscf->ssl_verify) { | |
| 685 rc = SSL_get_verify_result(pc->ssl->connection); | |
| 686 | |
| 687 if (rc != X509_V_OK) { | |
| 688 ngx_log_error(NGX_LOG_ERR, pc->log, 0, | |
| 689 "upstream SSL certificate verify error: (%l:%s)", | |
| 690 rc, X509_verify_cert_error_string(rc)); | |
| 691 goto failed; | |
| 692 } | |
| 693 | |
| 694 u = s->upstream; | |
| 695 | |
| 696 if (ngx_ssl_check_host(pc, &u->ssl_name) != NGX_OK) { | |
| 697 ngx_log_error(NGX_LOG_ERR, pc->log, 0, | |
| 698 "upstream SSL certificate does not match \"%V\"", | |
| 699 &u->ssl_name); | |
| 700 goto failed; | |
| 701 } | |
| 702 } | |
| 703 | |
| 704 if (pscf->ssl_session_reuse) { | |
| 705 u = s->upstream; | |
| 706 u->peer.save_session(&u->peer, u->peer.data); | |
| 707 } | |
| 708 | |
| 709 ngx_stream_proxy_init_upstream(s); | |
| 710 | |
| 711 return; | |
| 712 } | |
| 713 | |
| 714 failed: | |
| 715 | |
| 716 ngx_stream_proxy_next_upstream(s); | |
| 717 } | |
| 718 | |
| 719 | |
| 720 static ngx_int_t | |
| 721 ngx_stream_proxy_ssl_name(ngx_stream_session_t *s) | |
| 722 { | |
| 723 u_char *p, *last; | |
| 724 ngx_str_t name; | |
| 725 ngx_stream_upstream_t *u; | |
| 726 ngx_stream_proxy_srv_conf_t *pscf; | |
| 727 | |
| 728 pscf = ngx_stream_get_module_srv_conf(s, ngx_stream_proxy_module); | |
| 729 | |
| 730 u = s->upstream; | |
| 731 | |
| 732 name = pscf->ssl_name; | |
| 733 | |
| 734 if (name.len == 0) { | |
| 735 name = pscf->upstream->host; | |
| 736 } | |
| 737 | |
| 738 if (name.len == 0) { | |
| 739 goto done; | |
| 740 } | |
| 741 | |
| 742 /* | |
| 743 * ssl name here may contain port, strip it for compatibility | |
| 744 * with the http module | |
| 745 */ | |
| 746 | |
| 747 p = name.data; | |
| 748 last = name.data + name.len; | |
| 749 | |
| 750 if (*p == '[') { | |
| 751 p = ngx_strlchr(p, last, ']'); | |
| 752 | |
| 753 if (p == NULL) { | |
| 754 p = name.data; | |
| 755 } | |
| 756 } | |
| 757 | |
| 758 p = ngx_strlchr(p, last, ':'); | |
| 759 | |
| 760 if (p != NULL) { | |
| 761 name.len = p - name.data; | |
| 762 } | |
| 763 | |
| 764 if (!pscf->ssl_server_name) { | |
| 765 goto done; | |
| 766 } | |
| 767 | |
| 768 #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME | |
| 769 | |
| 770 /* as per RFC 6066, literal IPv4 and IPv6 addresses are not permitted */ | |
| 771 | |
| 772 if (name.len == 0 || *name.data == '[') { | |
| 773 goto done; | |
| 774 } | |
| 775 | |
| 776 if (ngx_inet_addr(name.data, name.len) != INADDR_NONE) { | |
| 777 goto done; | |
| 778 } | |
| 779 | |
| 780 /* | |
| 781 * SSL_set_tlsext_host_name() needs a null-terminated string, | |
| 782 * hence we explicitly null-terminate name here | |
| 783 */ | |
| 784 | |
| 785 p = ngx_pnalloc(s->connection->pool, name.len + 1); | |
| 786 if (p == NULL) { | |
| 787 return NGX_ERROR; | |
| 788 } | |
| 789 | |
| 790 (void) ngx_cpystrn(p, name.data, name.len + 1); | |
| 791 | |
| 792 name.data = p; | |
| 793 | |
| 794 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, s->connection->log, 0, | |
| 795 "upstream SSL server name: \"%s\"", name.data); | |
| 796 | |
| 797 if (SSL_set_tlsext_host_name(u->peer.connection->ssl->connection, name.data) | |
| 798 == 0) | |
| 799 { | |
| 800 ngx_ssl_error(NGX_LOG_ERR, s->connection->log, 0, | |
| 801 "SSL_set_tlsext_host_name(\"%s\") failed", name.data); | |
| 802 return NGX_ERROR; | |
| 803 } | |
| 804 | |
| 805 #endif | |
| 806 | |
| 807 done: | |
| 808 | |
| 809 u->ssl_name = name; | |
| 810 | |
| 811 return NGX_OK; | |
| 812 } | |
| 813 | |
| 814 #endif | |
| 815 | |
| 816 | |
| 817 static void | |
| 818 ngx_stream_proxy_downstream_handler(ngx_event_t *ev) | |
| 819 { | |
|
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820 ngx_stream_proxy_process_connection(ev, ev->write); |
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821 } |
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822 |
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823 |
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824 static void |
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825 ngx_stream_proxy_upstream_handler(ngx_event_t *ev) |
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826 { |
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827 ngx_stream_proxy_process_connection(ev, !ev->write); |
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828 } |
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829 |
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830 |
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831 static void |
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832 ngx_stream_proxy_process_connection(ngx_event_t *ev, ngx_uint_t from_upstream) |
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833 { |
| 6115 | 834 ngx_connection_t *c; |
| 835 ngx_stream_session_t *s; | |
| 836 ngx_stream_upstream_t *u; | |
| 837 | |
| 838 c = ev->data; | |
| 839 s = c->data; | |
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840 u = s->upstream; |
| 6115 | 841 |
| 842 if (ev->timedout) { | |
| 843 ngx_connection_error(c, NGX_ETIMEDOUT, "connection timed out"); | |
| 844 ngx_stream_proxy_finalize(s, NGX_DECLINED); | |
| 845 return; | |
| 846 } | |
| 847 | |
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848 if (from_upstream && u->upstream_buf.start == NULL) { |
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849 return; |
| 6115 | 850 } |
| 851 | |
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852 ngx_stream_proxy_process(s, from_upstream, ev->write); |
| 6115 | 853 } |
| 854 | |
| 855 | |
| 856 static void | |
| 857 ngx_stream_proxy_connect_handler(ngx_event_t *ev) | |
| 858 { | |
| 859 ngx_connection_t *c; | |
| 860 ngx_stream_session_t *s; | |
| 861 | |
| 862 c = ev->data; | |
| 863 s = c->data; | |
| 864 | |
| 865 if (ev->timedout) { | |
| 866 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT, "upstream timed out"); | |
| 867 ngx_stream_proxy_next_upstream(s); | |
| 868 return; | |
| 869 } | |
| 870 | |
| 871 ngx_del_timer(c->write); | |
| 872 | |
| 873 ngx_log_debug0(NGX_LOG_DEBUG_STREAM, c->log, 0, | |
| 874 "stream proxy connect upstream"); | |
| 875 | |
| 876 if (ngx_stream_proxy_test_connect(c) != NGX_OK) { | |
| 877 ngx_stream_proxy_next_upstream(s); | |
| 878 return; | |
| 879 } | |
| 880 | |
| 881 ngx_stream_proxy_init_upstream(s); | |
| 882 } | |
| 883 | |
| 884 | |
| 885 static ngx_int_t | |
| 886 ngx_stream_proxy_test_connect(ngx_connection_t *c) | |
| 887 { | |
| 888 int err; | |
| 889 socklen_t len; | |
| 890 | |
| 891 #if (NGX_HAVE_KQUEUE) | |
| 892 | |
| 893 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { | |
| 894 err = c->write->kq_errno ? c->write->kq_errno : c->read->kq_errno; | |
| 895 | |
| 896 if (err) { | |
| 897 (void) ngx_connection_error(c, err, | |
| 898 "kevent() reported that connect() failed"); | |
| 899 return NGX_ERROR; | |
| 900 } | |
| 901 | |
| 902 } else | |
| 903 #endif | |
| 904 { | |
| 905 err = 0; | |
| 906 len = sizeof(int); | |
| 907 | |
| 908 /* | |
| 909 * BSDs and Linux return 0 and set a pending error in err | |
| 910 * Solaris returns -1 and sets errno | |
| 911 */ | |
| 912 | |
| 913 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len) | |
| 914 == -1) | |
| 915 { | |
| 916 err = ngx_socket_errno; | |
| 917 } | |
| 918 | |
| 919 if (err) { | |
| 920 (void) ngx_connection_error(c, err, "connect() failed"); | |
| 921 return NGX_ERROR; | |
| 922 } | |
| 923 } | |
| 924 | |
| 925 return NGX_OK; | |
| 926 } | |
| 927 | |
| 928 | |
| 929 static ngx_int_t | |
| 930 ngx_stream_proxy_process(ngx_stream_session_t *s, ngx_uint_t from_upstream, | |
| 931 ngx_uint_t do_write) | |
| 932 { | |
| 933 size_t size; | |
| 934 ssize_t n; | |
| 935 ngx_buf_t *b; | |
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936 ngx_uint_t flags; |
| 6115 | 937 ngx_connection_t *c, *pc, *src, *dst; |
| 938 ngx_log_handler_pt handler; | |
| 939 ngx_stream_upstream_t *u; | |
| 940 ngx_stream_proxy_srv_conf_t *pscf; | |
| 941 | |
| 942 u = s->upstream; | |
| 943 | |
| 944 c = s->connection; | |
| 945 pc = u->upstream_buf.start ? u->peer.connection : NULL; | |
| 946 | |
| 947 if (from_upstream) { | |
| 948 src = pc; | |
| 949 dst = c; | |
| 950 b = &u->upstream_buf; | |
| 951 | |
| 952 } else { | |
| 953 src = c; | |
| 954 dst = pc; | |
| 955 b = &u->downstream_buf; | |
| 956 } | |
| 957 | |
| 958 for ( ;; ) { | |
| 959 | |
| 960 if (do_write) { | |
| 961 | |
| 962 size = b->last - b->pos; | |
| 963 | |
| 964 if (size && dst && dst->write->ready) { | |
| 965 | |
| 966 n = dst->send(dst, b->pos, size); | |
| 967 | |
| 968 if (n == NGX_ERROR) { | |
| 969 ngx_stream_proxy_finalize(s, NGX_DECLINED); | |
| 970 return NGX_ERROR; | |
| 971 } | |
| 972 | |
| 973 if (n > 0) { | |
| 974 b->pos += n; | |
| 975 | |
| 976 if (b->pos == b->last) { | |
| 977 b->pos = b->start; | |
| 978 b->last = b->start; | |
| 979 } | |
| 980 } | |
| 981 } | |
| 982 } | |
| 983 | |
| 984 size = b->end - b->last; | |
| 985 | |
| 986 if (size && src->read->ready) { | |
| 987 | |
| 988 n = src->recv(src, b->last, size); | |
| 989 | |
| 990 if (n == NGX_AGAIN || n == 0) { | |
| 991 break; | |
| 992 } | |
| 993 | |
| 994 if (n > 0) { | |
| 995 if (from_upstream) { | |
| 996 u->received += n; | |
| 997 | |
| 998 } else { | |
| 999 s->received += n; | |
| 1000 } | |
| 1001 | |
| 1002 do_write = 1; | |
| 1003 b->last += n; | |
| 1004 continue; | |
| 1005 } | |
| 1006 | |
| 1007 if (n == NGX_ERROR) { | |
| 1008 src->read->eof = 1; | |
| 1009 } | |
| 1010 } | |
| 1011 | |
| 1012 break; | |
| 1013 } | |
| 1014 | |
| 1015 pscf = ngx_stream_get_module_srv_conf(s, ngx_stream_proxy_module); | |
| 1016 | |
| 1017 if (src->read->eof && (b->pos == b->last || (dst && dst->read->eof))) { | |
| 1018 handler = c->log->handler; | |
| 1019 c->log->handler = NULL; | |
| 1020 | |
| 1021 ngx_log_error(NGX_LOG_INFO, c->log, 0, | |
| 1022 "%s disconnected" | |
| 1023 ", bytes from/to client:%O/%O" | |
| 1024 ", bytes from/to upstream:%O/%O", | |
| 1025 from_upstream ? "upstream" : "client", | |
| 1026 s->received, c->sent, u->received, pc ? pc->sent : 0); | |
| 1027 | |
| 1028 c->log->handler = handler; | |
| 1029 | |
| 1030 ngx_stream_proxy_finalize(s, NGX_OK); | |
| 1031 return NGX_DONE; | |
| 1032 } | |
| 1033 | |
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1034 flags = src->read->eof ? NGX_CLOSE_EVENT : 0; |
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1035 |
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1036 if (ngx_handle_read_event(src->read, flags) != NGX_OK) { |
| 6115 | 1037 ngx_stream_proxy_finalize(s, NGX_ERROR); |
| 1038 return NGX_ERROR; | |
| 1039 } | |
| 1040 | |
| 1041 if (dst) { | |
| 1042 if (ngx_handle_write_event(dst->write, 0) != NGX_OK) { | |
| 1043 ngx_stream_proxy_finalize(s, NGX_ERROR); | |
| 1044 return NGX_ERROR; | |
| 1045 } | |
| 1046 | |
| 1047 ngx_add_timer(c->read, pscf->timeout); | |
| 1048 } | |
| 1049 | |
| 1050 return NGX_OK; | |
| 1051 } | |
| 1052 | |
| 1053 | |
| 1054 static void | |
| 1055 ngx_stream_proxy_next_upstream(ngx_stream_session_t *s) | |
| 1056 { | |
| 1057 ngx_msec_t timeout; | |
| 1058 ngx_connection_t *pc; | |
| 1059 ngx_stream_upstream_t *u; | |
| 1060 ngx_stream_proxy_srv_conf_t *pscf; | |
| 1061 | |
| 1062 ngx_log_debug0(NGX_LOG_DEBUG_STREAM, s->connection->log, 0, | |
| 1063 "stream proxy next upstream"); | |
| 1064 | |
| 1065 u = s->upstream; | |
| 1066 | |
| 1067 if (u->peer.sockaddr) { | |
| 1068 u->peer.free(&u->peer, u->peer.data, NGX_PEER_FAILED); | |
| 1069 u->peer.sockaddr = NULL; | |
| 1070 } | |
| 1071 | |
| 1072 pscf = ngx_stream_get_module_srv_conf(s, ngx_stream_proxy_module); | |
| 1073 | |
| 1074 timeout = pscf->next_upstream_timeout; | |
| 1075 | |
| 1076 if (u->peer.tries == 0 | |
| 1077 || !pscf->next_upstream | |
| 1078 || (timeout && ngx_current_msec - u->peer.start_time >= timeout)) | |
| 1079 { | |
| 1080 ngx_stream_proxy_finalize(s, NGX_DECLINED); | |
| 1081 return; | |
| 1082 } | |
| 1083 | |
| 1084 pc = u->peer.connection; | |
| 1085 | |
| 1086 if (pc) { | |
| 1087 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, s->connection->log, 0, | |
| 1088 "close proxy upstream connection: %d", pc->fd); | |
| 1089 | |
| 1090 #if (NGX_STREAM_SSL) | |
| 1091 if (pc->ssl) { | |
| 1092 pc->ssl->no_wait_shutdown = 1; | |
| 1093 pc->ssl->no_send_shutdown = 1; | |
| 1094 | |
| 1095 (void) ngx_ssl_shutdown(pc); | |
| 1096 } | |
| 1097 #endif | |
| 1098 | |
| 1099 ngx_close_connection(pc); | |
| 1100 u->peer.connection = NULL; | |
| 1101 } | |
| 1102 | |
| 1103 ngx_stream_proxy_connect(s); | |
| 1104 } | |
| 1105 | |
| 1106 | |
| 1107 static void | |
| 1108 ngx_stream_proxy_finalize(ngx_stream_session_t *s, ngx_int_t rc) | |
| 1109 { | |
| 1110 ngx_connection_t *pc; | |
| 1111 ngx_stream_upstream_t *u; | |
| 1112 | |
| 1113 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, s->connection->log, 0, | |
| 1114 "finalize stream proxy: %i", rc); | |
| 1115 | |
| 1116 u = s->upstream; | |
| 1117 | |
| 1118 if (u == NULL) { | |
| 1119 goto noupstream; | |
| 1120 } | |
| 1121 | |
| 1122 if (u->peer.free && u->peer.sockaddr) { | |
| 1123 u->peer.free(&u->peer, u->peer.data, 0); | |
| 1124 u->peer.sockaddr = NULL; | |
| 1125 } | |
| 1126 | |
| 1127 pc = u->peer.connection; | |
| 1128 | |
| 1129 if (pc) { | |
| 1130 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, s->connection->log, 0, | |
| 1131 "close stream proxy upstream connection: %d", pc->fd); | |
| 1132 | |
| 1133 #if (NGX_STREAM_SSL) | |
| 1134 if (pc->ssl) { | |
| 1135 pc->ssl->no_wait_shutdown = 1; | |
| 1136 (void) ngx_ssl_shutdown(pc); | |
| 1137 } | |
| 1138 #endif | |
| 1139 | |
| 1140 ngx_close_connection(pc); | |
| 1141 u->peer.connection = NULL; | |
| 1142 } | |
| 1143 | |
| 1144 noupstream: | |
| 1145 | |
| 1146 ngx_stream_close_connection(s->connection); | |
| 1147 } | |
| 1148 | |
| 1149 | |
| 1150 static u_char * | |
| 1151 ngx_stream_proxy_log_error(ngx_log_t *log, u_char *buf, size_t len) | |
| 1152 { | |
| 1153 u_char *p; | |
| 1154 ngx_connection_t *pc; | |
| 1155 ngx_stream_session_t *s; | |
| 1156 ngx_stream_upstream_t *u; | |
| 1157 | |
| 1158 s = log->data; | |
| 1159 | |
| 1160 u = s->upstream; | |
| 1161 | |
| 1162 p = buf; | |
| 1163 | |
| 1164 if (u->peer.name) { | |
| 1165 p = ngx_snprintf(p, len, ", upstream: \"%V\"", u->peer.name); | |
| 1166 len -= p - buf; | |
| 1167 } | |
| 1168 | |
| 1169 pc = u->peer.connection; | |
| 1170 | |
| 1171 p = ngx_snprintf(p, len, | |
| 1172 ", bytes from/to client:%O/%O" | |
| 1173 ", bytes from/to upstream:%O/%O", | |
| 1174 s->received, s->connection->sent, | |
| 1175 u->received, pc ? pc->sent : 0); | |
| 1176 | |
| 1177 return p; | |
| 1178 } | |
| 1179 | |
| 1180 | |
| 1181 static void * | |
| 1182 ngx_stream_proxy_create_srv_conf(ngx_conf_t *cf) | |
| 1183 { | |
| 1184 ngx_stream_proxy_srv_conf_t *conf; | |
| 1185 | |
| 1186 conf = ngx_pcalloc(cf->pool, sizeof(ngx_stream_proxy_srv_conf_t)); | |
| 1187 if (conf == NULL) { | |
| 1188 return NULL; | |
| 1189 } | |
| 1190 | |
| 1191 /* | |
| 1192 * set by ngx_pcalloc(): | |
| 1193 * | |
| 1194 * conf->ssl_protocols = 0; | |
| 1195 * conf->ssl_ciphers = { 0, NULL }; | |
| 1196 * conf->ssl_name = { 0, NULL }; | |
| 1197 * conf->ssl_trusted_certificate = { 0, NULL }; | |
| 1198 * conf->ssl_crl = { 0, NULL }; | |
| 1199 * conf->ssl_certificate = { 0, NULL }; | |
| 1200 * conf->ssl_certificate_key = { 0, NULL }; | |
| 1201 * | |
| 1202 * conf->ssl = NULL; | |
| 1203 * conf->upstream = NULL; | |
| 1204 */ | |
| 1205 | |
| 1206 conf->connect_timeout = NGX_CONF_UNSET_MSEC; | |
| 1207 conf->timeout = NGX_CONF_UNSET_MSEC; | |
| 1208 conf->next_upstream_timeout = NGX_CONF_UNSET_MSEC; | |
| 1209 conf->downstream_buf_size = NGX_CONF_UNSET_SIZE; | |
| 1210 conf->upstream_buf_size = NGX_CONF_UNSET_SIZE; | |
| 1211 conf->next_upstream_tries = NGX_CONF_UNSET_UINT; | |
| 1212 conf->next_upstream = NGX_CONF_UNSET; | |
|
6184
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diff
changeset
|
1213 conf->proxy_protocol = NGX_CONF_UNSET; |
|
6183
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diff
changeset
|
1214 conf->local = NGX_CONF_UNSET_PTR; |
| 6115 | 1215 |
| 1216 #if (NGX_STREAM_SSL) | |
| 1217 conf->ssl_enable = NGX_CONF_UNSET; | |
| 1218 conf->ssl_session_reuse = NGX_CONF_UNSET; | |
| 1219 conf->ssl_server_name = NGX_CONF_UNSET; | |
| 1220 conf->ssl_verify = NGX_CONF_UNSET; | |
| 1221 conf->ssl_verify_depth = NGX_CONF_UNSET_UINT; | |
| 1222 conf->ssl_passwords = NGX_CONF_UNSET_PTR; | |
| 1223 #endif | |
| 1224 | |
| 1225 return conf; | |
| 1226 } | |
| 1227 | |
| 1228 | |
| 1229 static char * | |
| 1230 ngx_stream_proxy_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) | |
| 1231 { | |
| 1232 ngx_stream_proxy_srv_conf_t *prev = parent; | |
| 1233 ngx_stream_proxy_srv_conf_t *conf = child; | |
| 1234 | |
| 1235 ngx_conf_merge_msec_value(conf->connect_timeout, | |
| 1236 prev->connect_timeout, 60000); | |
| 1237 | |
| 1238 ngx_conf_merge_msec_value(conf->timeout, | |
| 1239 prev->timeout, 10 * 60000); | |
| 1240 | |
| 1241 ngx_conf_merge_msec_value(conf->next_upstream_timeout, | |
| 1242 prev->next_upstream_timeout, 0); | |
| 1243 | |
| 1244 ngx_conf_merge_size_value(conf->downstream_buf_size, | |
| 1245 prev->downstream_buf_size, 16384); | |
| 1246 | |
| 1247 ngx_conf_merge_size_value(conf->upstream_buf_size, | |
| 1248 prev->upstream_buf_size, 16384); | |
| 1249 | |
| 1250 ngx_conf_merge_uint_value(conf->next_upstream_tries, | |
| 1251 prev->next_upstream_tries, 0); | |
| 1252 | |
| 1253 ngx_conf_merge_value(conf->next_upstream, prev->next_upstream, 1); | |
| 1254 | |
|
6184
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Stream: client-side PROXY protocol.
Roman Arutyunyan <arut@nginx.com>
parents:
6183
diff
changeset
|
1255 ngx_conf_merge_value(conf->proxy_protocol, prev->proxy_protocol, 0); |
|
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Stream: client-side PROXY protocol.
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
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|
1256 |
|
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Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
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diff
changeset
|
1257 ngx_conf_merge_ptr_value(conf->local, prev->local, NULL); |
|
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Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
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diff
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|
1258 |
| 6115 | 1259 #if (NGX_STREAM_SSL) |
| 1260 | |
| 1261 ngx_conf_merge_value(conf->ssl_enable, prev->ssl_enable, 0); | |
| 1262 | |
| 1263 ngx_conf_merge_value(conf->ssl_session_reuse, | |
| 1264 prev->ssl_session_reuse, 1); | |
| 1265 | |
| 1266 ngx_conf_merge_bitmask_value(conf->ssl_protocols, prev->ssl_protocols, | |
|
6157
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Disabled SSLv3 by default (ticket #653).
Maxim Dounin <mdounin@mdounin.ru>
parents:
6124
diff
changeset
|
1267 (NGX_CONF_BITMASK_SET|NGX_SSL_TLSv1 |
|
b2899e7d0ef8
Disabled SSLv3 by default (ticket #653).
Maxim Dounin <mdounin@mdounin.ru>
parents:
6124
diff
changeset
|
1268 |NGX_SSL_TLSv1_1|NGX_SSL_TLSv1_2)); |
| 6115 | 1269 |
| 1270 ngx_conf_merge_str_value(conf->ssl_ciphers, prev->ssl_ciphers, "DEFAULT"); | |
| 1271 | |
| 1272 ngx_conf_merge_str_value(conf->ssl_name, prev->ssl_name, ""); | |
| 1273 | |
| 1274 ngx_conf_merge_value(conf->ssl_server_name, prev->ssl_server_name, 0); | |
| 1275 | |
| 1276 ngx_conf_merge_value(conf->ssl_verify, prev->ssl_verify, 0); | |
| 1277 | |
| 1278 ngx_conf_merge_uint_value(conf->ssl_verify_depth, | |
| 1279 prev->ssl_verify_depth, 1); | |
| 1280 | |
| 1281 ngx_conf_merge_str_value(conf->ssl_trusted_certificate, | |
| 1282 prev->ssl_trusted_certificate, ""); | |
| 1283 | |
| 1284 ngx_conf_merge_str_value(conf->ssl_crl, prev->ssl_crl, ""); | |
| 1285 | |
| 1286 ngx_conf_merge_str_value(conf->ssl_certificate, | |
| 1287 prev->ssl_certificate, ""); | |
| 1288 | |
| 1289 ngx_conf_merge_str_value(conf->ssl_certificate_key, | |
| 1290 prev->ssl_certificate_key, ""); | |
| 1291 | |
| 1292 ngx_conf_merge_ptr_value(conf->ssl_passwords, prev->ssl_passwords, NULL); | |
| 1293 | |
| 1294 if (conf->ssl_enable && ngx_stream_proxy_set_ssl(cf, conf) != NGX_OK) { | |
| 1295 return NGX_CONF_ERROR; | |
| 1296 } | |
| 1297 | |
| 1298 #endif | |
| 1299 | |
| 1300 return NGX_CONF_OK; | |
| 1301 } | |
| 1302 | |
| 1303 | |
| 1304 #if (NGX_STREAM_SSL) | |
| 1305 | |
| 1306 static ngx_int_t | |
| 1307 ngx_stream_proxy_set_ssl(ngx_conf_t *cf, ngx_stream_proxy_srv_conf_t *pscf) | |
| 1308 { | |
| 1309 ngx_pool_cleanup_t *cln; | |
| 1310 | |
| 1311 pscf->ssl = ngx_pcalloc(cf->pool, sizeof(ngx_ssl_t)); | |
| 1312 if (pscf->ssl == NULL) { | |
| 1313 return NGX_ERROR; | |
| 1314 } | |
| 1315 | |
| 1316 pscf->ssl->log = cf->log; | |
| 1317 | |
| 1318 if (ngx_ssl_create(pscf->ssl, pscf->ssl_protocols, NULL) != NGX_OK) { | |
| 1319 return NGX_ERROR; | |
| 1320 } | |
| 1321 | |
| 1322 cln = ngx_pool_cleanup_add(cf->pool, 0); | |
| 1323 if (cln == NULL) { | |
| 1324 return NGX_ERROR; | |
| 1325 } | |
| 1326 | |
| 1327 cln->handler = ngx_ssl_cleanup_ctx; | |
| 1328 cln->data = pscf->ssl; | |
| 1329 | |
| 1330 if (pscf->ssl_certificate.len) { | |
| 1331 | |
| 1332 if (pscf->ssl_certificate_key.len == 0) { | |
| 1333 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
| 1334 "no \"proxy_ssl_certificate_key\" is defined " | |
| 1335 "for certificate \"%V\"", &pscf->ssl_certificate); | |
| 1336 return NGX_ERROR; | |
| 1337 } | |
| 1338 | |
| 1339 if (ngx_ssl_certificate(cf, pscf->ssl, &pscf->ssl_certificate, | |
| 1340 &pscf->ssl_certificate_key, pscf->ssl_passwords) | |
| 1341 != NGX_OK) | |
| 1342 { | |
| 1343 return NGX_ERROR; | |
| 1344 } | |
| 1345 } | |
| 1346 | |
| 1347 if (SSL_CTX_set_cipher_list(pscf->ssl->ctx, | |
| 1348 (const char *) pscf->ssl_ciphers.data) | |
| 1349 == 0) | |
| 1350 { | |
| 1351 ngx_ssl_error(NGX_LOG_EMERG, cf->log, 0, | |
| 1352 "SSL_CTX_set_cipher_list(\"%V\") failed", | |
| 1353 &pscf->ssl_ciphers); | |
| 1354 return NGX_ERROR; | |
| 1355 } | |
| 1356 | |
| 1357 if (pscf->ssl_verify) { | |
| 1358 if (pscf->ssl_trusted_certificate.len == 0) { | |
| 1359 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
| 1360 "no proxy_ssl_trusted_certificate for proxy_ssl_verify"); | |
| 1361 return NGX_ERROR; | |
| 1362 } | |
| 1363 | |
| 1364 if (ngx_ssl_trusted_certificate(cf, pscf->ssl, | |
| 1365 &pscf->ssl_trusted_certificate, | |
| 1366 pscf->ssl_verify_depth) | |
| 1367 != NGX_OK) | |
| 1368 { | |
| 1369 return NGX_ERROR; | |
| 1370 } | |
| 1371 | |
| 1372 if (ngx_ssl_crl(cf, pscf->ssl, &pscf->ssl_crl) != NGX_OK) { | |
| 1373 return NGX_ERROR; | |
| 1374 } | |
| 1375 } | |
| 1376 | |
| 1377 return NGX_OK; | |
| 1378 } | |
| 1379 | |
| 1380 #endif | |
| 1381 | |
| 1382 | |
| 1383 static char * | |
| 1384 ngx_stream_proxy_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 1385 { | |
| 1386 ngx_stream_proxy_srv_conf_t *pscf = conf; | |
| 1387 | |
| 1388 ngx_url_t u; | |
| 1389 ngx_str_t *value, *url; | |
| 1390 ngx_stream_core_srv_conf_t *cscf; | |
| 1391 | |
| 1392 if (pscf->upstream) { | |
| 1393 return "is duplicate"; | |
| 1394 } | |
| 1395 | |
| 1396 cscf = ngx_stream_conf_get_module_srv_conf(cf, ngx_stream_core_module); | |
| 1397 | |
| 1398 cscf->handler = ngx_stream_proxy_handler; | |
| 1399 | |
| 1400 value = cf->args->elts; | |
| 1401 | |
| 1402 url = &value[1]; | |
| 1403 | |
| 1404 ngx_memzero(&u, sizeof(ngx_url_t)); | |
| 1405 | |
| 1406 u.url = *url; | |
| 1407 u.no_resolve = 1; | |
| 1408 | |
| 1409 pscf->upstream = ngx_stream_upstream_add(cf, &u, 0); | |
| 1410 if (pscf->upstream == NULL) { | |
| 1411 return NGX_CONF_ERROR; | |
| 1412 } | |
| 1413 | |
| 1414 return NGX_CONF_OK; | |
| 1415 } | |
|
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|
1416 |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
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6174
diff
changeset
|
1417 |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
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6174
diff
changeset
|
1418 static char * |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
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diff
changeset
|
1419 ngx_stream_proxy_bind(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1420 { |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1421 ngx_stream_proxy_srv_conf_t *pscf = conf; |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1422 |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
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parents:
6174
diff
changeset
|
1423 ngx_int_t rc; |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1424 ngx_str_t *value; |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1425 |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1426 if (pscf->local != NGX_CONF_UNSET_PTR) { |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1427 return "is duplicate"; |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1428 } |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
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6174
diff
changeset
|
1429 |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
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diff
changeset
|
1430 value = cf->args->elts; |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1431 |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1432 if (ngx_strcmp(value[1].data, "off") == 0) { |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1433 pscf->local = NULL; |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1434 return NGX_CONF_OK; |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
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parents:
6174
diff
changeset
|
1435 } |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
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6174
diff
changeset
|
1436 |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
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diff
changeset
|
1437 pscf->local = ngx_palloc(cf->pool, sizeof(ngx_addr_t)); |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
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diff
changeset
|
1438 if (pscf->local == NULL) { |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1439 return NGX_CONF_ERROR; |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1440 } |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1441 |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
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diff
changeset
|
1442 rc = ngx_parse_addr(cf->pool, pscf->local, value[1].data, value[1].len); |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1443 |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1444 switch (rc) { |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1445 case NGX_OK: |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1446 pscf->local->name = value[1]; |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
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changeset
|
1447 return NGX_CONF_OK; |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
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changeset
|
1448 |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
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diff
changeset
|
1449 case NGX_DECLINED: |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
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changeset
|
1450 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1451 "invalid address \"%V\"", &value[1]); |
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4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1452 /* fall through */ |
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4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1453 |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1454 default: |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1455 return NGX_CONF_ERROR; |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1456 } |
|
4dcffe43a7ea
Stream: the "proxy_bind" directive.
Vladimir Homutov <vl@nginx.com>
parents:
6174
diff
changeset
|
1457 } |