Alexandre Lision | 8af73cb | 2013-12-10 14:11:20 -0500 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| 4 | * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | #include <pjsip.h> |
| 21 | #include <pjlib-util.h> |
| 22 | #include <pjlib.h> |
| 23 | |
| 24 | |
| 25 | /* Options */ |
| 26 | static struct global_struct |
| 27 | { |
| 28 | pj_caching_pool cp; |
| 29 | pjsip_endpoint *endpt; |
| 30 | int port; |
| 31 | pj_pool_t *pool; |
| 32 | |
| 33 | pj_thread_t *thread; |
| 34 | pj_bool_t quit_flag; |
| 35 | |
| 36 | pj_bool_t record_route; |
| 37 | |
| 38 | unsigned name_cnt; |
| 39 | pjsip_host_port name[16]; |
| 40 | } global; |
| 41 | |
| 42 | |
| 43 | |
| 44 | static void app_perror(const char *msg, pj_status_t status) |
| 45 | { |
| 46 | char errmsg[PJ_ERR_MSG_SIZE]; |
| 47 | |
| 48 | pj_strerror(status, errmsg, sizeof(errmsg)); |
| 49 | PJ_LOG(1,(THIS_FILE, "%s: %s", msg, errmsg)); |
| 50 | } |
| 51 | |
| 52 | |
| 53 | static void usage(void) |
| 54 | { |
| 55 | puts("Options:\n" |
| 56 | "\n" |
| 57 | " -p, --port N Set local listener port to N\n" |
| 58 | " -R, --rr Perform record routing\n" |
| 59 | " -L, --log-level N Set log level to N (default: 4)\n" |
| 60 | " -h, --help Show this help screen\n" |
| 61 | ); |
| 62 | } |
| 63 | |
| 64 | |
| 65 | static pj_status_t init_options(int argc, char *argv[]) |
| 66 | { |
| 67 | struct pj_getopt_option long_opt[] = { |
| 68 | { "port", 1, 0, 'p'}, |
| 69 | { "rr", 0, 0, 'R'}, |
| 70 | { "log-level", 1, 0, 'L'}, |
| 71 | { "help", 0, 0, 'h'}, |
| 72 | { NULL, 0, 0, 0} |
| 73 | }; |
| 74 | int c; |
| 75 | int opt_ind; |
| 76 | |
| 77 | pj_optind = 0; |
| 78 | while((c=pj_getopt_long(argc, argv, "p:L:Rh", long_opt, &opt_ind))!=-1) { |
| 79 | switch (c) { |
| 80 | case 'p': |
| 81 | global.port = atoi(pj_optarg); |
| 82 | printf("Port is set to %d\n", global.port); |
| 83 | break; |
| 84 | |
| 85 | case 'R': |
| 86 | global.record_route = PJ_TRUE; |
| 87 | printf("Using record route mode\n"); |
| 88 | break; |
| 89 | |
| 90 | case 'L': |
| 91 | pj_log_set_level(atoi(pj_optarg)); |
| 92 | break; |
| 93 | |
| 94 | case 'h': |
| 95 | usage(); |
| 96 | return -1; |
| 97 | |
| 98 | default: |
| 99 | puts("Unknown option. Run with --help for help."); |
| 100 | return -1; |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | return PJ_SUCCESS; |
| 105 | } |
| 106 | |
| 107 | |
| 108 | /***************************************************************************** |
| 109 | * This is a very simple PJSIP module, whose sole purpose is to display |
| 110 | * incoming and outgoing messages to log. This module will have priority |
| 111 | * higher than transport layer, which means: |
| 112 | * |
| 113 | * - incoming messages will come to this module first before reaching |
| 114 | * transaction layer. |
| 115 | * |
| 116 | * - outgoing messages will come to this module last, after the message |
| 117 | * has been 'printed' to contiguous buffer by transport layer and |
| 118 | * appropriate transport instance has been decided for this message. |
| 119 | * |
| 120 | */ |
| 121 | |
| 122 | /* Notification on incoming messages */ |
| 123 | static pj_bool_t logging_on_rx_msg(pjsip_rx_data *rdata) |
| 124 | { |
| 125 | PJ_LOG(5,(THIS_FILE, "RX %d bytes %s from %s %s:%d:\n" |
| 126 | "%.*s\n" |
| 127 | "--end msg--", |
| 128 | rdata->msg_info.len, |
| 129 | pjsip_rx_data_get_info(rdata), |
| 130 | rdata->tp_info.transport->type_name, |
| 131 | rdata->pkt_info.src_name, |
| 132 | rdata->pkt_info.src_port, |
| 133 | (int)rdata->msg_info.len, |
| 134 | rdata->msg_info.msg_buf)); |
| 135 | |
| 136 | /* Always return false, otherwise messages will not get processed! */ |
| 137 | return PJ_FALSE; |
| 138 | } |
| 139 | |
| 140 | /* Notification on outgoing messages */ |
| 141 | static pj_status_t logging_on_tx_msg(pjsip_tx_data *tdata) |
| 142 | { |
| 143 | |
| 144 | /* Important note: |
| 145 | * tp_info field is only valid after outgoing messages has passed |
| 146 | * transport layer. So don't try to access tp_info when the module |
| 147 | * has lower priority than transport layer. |
| 148 | */ |
| 149 | |
| 150 | PJ_LOG(5,(THIS_FILE, "TX %d bytes %s to %s %s:%d:\n" |
| 151 | "%.*s\n" |
| 152 | "--end msg--", |
| 153 | (tdata->buf.cur - tdata->buf.start), |
| 154 | pjsip_tx_data_get_info(tdata), |
| 155 | tdata->tp_info.transport->type_name, |
| 156 | tdata->tp_info.dst_name, |
| 157 | tdata->tp_info.dst_port, |
| 158 | (int)(tdata->buf.cur - tdata->buf.start), |
| 159 | tdata->buf.start)); |
| 160 | |
| 161 | /* Always return success, otherwise message will not get sent! */ |
| 162 | return PJ_SUCCESS; |
| 163 | } |
| 164 | |
| 165 | /* The module instance. */ |
| 166 | static pjsip_module mod_msg_logger = |
| 167 | { |
| 168 | NULL, NULL, /* prev, next. */ |
| 169 | { "mod-msg-logger", 14 }, /* Name. */ |
| 170 | -1, /* Id */ |
| 171 | PJSIP_MOD_PRIORITY_TRANSPORT_LAYER-1,/* Priority */ |
| 172 | NULL, /* load() */ |
| 173 | NULL, /* start() */ |
| 174 | NULL, /* stop() */ |
| 175 | NULL, /* unload() */ |
| 176 | &logging_on_rx_msg, /* on_rx_request() */ |
| 177 | &logging_on_rx_msg, /* on_rx_response() */ |
| 178 | &logging_on_tx_msg, /* on_tx_request. */ |
| 179 | &logging_on_tx_msg, /* on_tx_response() */ |
| 180 | NULL, /* on_tsx_state() */ |
| 181 | |
| 182 | }; |
| 183 | |
| 184 | |
| 185 | static pj_status_t init_stack(void) |
| 186 | { |
| 187 | pj_status_t status; |
| 188 | |
| 189 | /* Must init PJLIB first: */ |
| 190 | status = pj_init(); |
| 191 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, status); |
| 192 | |
| 193 | |
| 194 | /* Then init PJLIB-UTIL: */ |
| 195 | status = pjlib_util_init(); |
| 196 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, status); |
| 197 | |
| 198 | |
| 199 | /* Must create a pool factory before we can allocate any memory. */ |
| 200 | pj_caching_pool_init(&global.cp, &pj_pool_factory_default_policy, 0); |
| 201 | |
| 202 | /* Create the endpoint: */ |
| 203 | status = pjsip_endpt_create(&global.cp.factory, NULL, &global.endpt); |
| 204 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, status); |
| 205 | |
| 206 | /* Init transaction layer for stateful proxy only */ |
| 207 | #if STATEFUL |
| 208 | status = pjsip_tsx_layer_init_module(global.endpt); |
| 209 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, status); |
| 210 | #endif |
| 211 | |
| 212 | /* Create listening transport */ |
| 213 | { |
| 214 | pj_sockaddr_in addr; |
| 215 | |
| 216 | addr.sin_family = pj_AF_INET(); |
| 217 | addr.sin_addr.s_addr = 0; |
| 218 | addr.sin_port = pj_htons((pj_uint16_t)global.port); |
| 219 | |
| 220 | status = pjsip_udp_transport_start( global.endpt, &addr, |
| 221 | NULL, 1, NULL); |
| 222 | if (status != PJ_SUCCESS) |
| 223 | return status; |
| 224 | } |
| 225 | |
| 226 | /* Create pool for the application */ |
| 227 | global.pool = pj_pool_create(&global.cp.factory, "proxyapp", |
| 228 | 4000, 4000, NULL); |
| 229 | |
| 230 | /* Register the logger module */ |
| 231 | pjsip_endpt_register_module(global.endpt, &mod_msg_logger); |
| 232 | |
| 233 | return PJ_SUCCESS; |
| 234 | } |
| 235 | |
| 236 | |
| 237 | static pj_status_t init_proxy(void) |
| 238 | { |
| 239 | pj_sockaddr pri_addr; |
| 240 | pj_sockaddr addr_list[16]; |
| 241 | unsigned addr_cnt = PJ_ARRAY_SIZE(addr_list); |
| 242 | unsigned i; |
| 243 | |
| 244 | /* List all names matching local endpoint. |
| 245 | * Note that PJLIB version 0.6 and newer has a function to |
| 246 | * enumerate local IP interface (pj_enum_ip_interface()), so |
| 247 | * by using it would be possible to list all IP interfaces in |
| 248 | * this host. |
| 249 | */ |
| 250 | |
| 251 | /* The first address is important since this would be the one |
| 252 | * to be added in Record-Route. |
| 253 | */ |
| 254 | if (pj_gethostip(pj_AF_INET(), &pri_addr)==PJ_SUCCESS) { |
| 255 | pj_strdup2(global.pool, &global.name[global.name_cnt].host, |
| 256 | pj_inet_ntoa(pri_addr.ipv4.sin_addr)); |
| 257 | global.name[global.name_cnt].port = global.port; |
| 258 | global.name_cnt++; |
| 259 | } |
| 260 | |
| 261 | /* Get the rest of IP interfaces */ |
| 262 | if (pj_enum_ip_interface(pj_AF_INET(), &addr_cnt, addr_list) == PJ_SUCCESS) { |
| 263 | for (i=0; i<addr_cnt; ++i) { |
| 264 | |
| 265 | if (addr_list[i].ipv4.sin_addr.s_addr == pri_addr.ipv4.sin_addr.s_addr) |
| 266 | continue; |
| 267 | |
| 268 | pj_strdup2(global.pool, &global.name[global.name_cnt].host, |
| 269 | pj_inet_ntoa(addr_list[i].ipv4.sin_addr)); |
| 270 | global.name[global.name_cnt].port = global.port; |
| 271 | global.name_cnt++; |
| 272 | } |
| 273 | } |
| 274 | |
| 275 | /* Add loopback address. */ |
| 276 | #if PJ_IP_HELPER_IGNORE_LOOPBACK_IF |
| 277 | global.name[global.name_cnt].host = pj_str("127.0.0.1"); |
| 278 | global.name[global.name_cnt].port = global.port; |
| 279 | global.name_cnt++; |
| 280 | #endif |
| 281 | |
| 282 | global.name[global.name_cnt].host = *pj_gethostname(); |
| 283 | global.name[global.name_cnt].port = global.port; |
| 284 | global.name_cnt++; |
| 285 | |
| 286 | global.name[global.name_cnt].host = pj_str("localhost"); |
| 287 | global.name[global.name_cnt].port = global.port; |
| 288 | global.name_cnt++; |
| 289 | |
| 290 | PJ_LOG(3,(THIS_FILE, "Proxy started, listening on port %d", global.port)); |
| 291 | PJ_LOG(3,(THIS_FILE, "Local host aliases:")); |
| 292 | for (i=0; i<global.name_cnt; ++i) { |
| 293 | PJ_LOG(3,(THIS_FILE, " %.*s:%d", |
| 294 | (int)global.name[i].host.slen, |
| 295 | global.name[i].host.ptr, |
| 296 | global.name[i].port)); |
| 297 | } |
| 298 | |
| 299 | if (global.record_route) { |
| 300 | PJ_LOG(3,(THIS_FILE, "Using Record-Route mode")); |
| 301 | } |
| 302 | |
| 303 | return PJ_SUCCESS; |
| 304 | } |
| 305 | |
| 306 | |
| 307 | #if PJ_HAS_THREADS |
| 308 | static int worker_thread(void *p) |
| 309 | { |
| 310 | pj_time_val delay = {0, 10}; |
| 311 | |
| 312 | PJ_UNUSED_ARG(p); |
| 313 | |
| 314 | while (!global.quit_flag) { |
| 315 | pjsip_endpt_handle_events(global.endpt, &delay); |
| 316 | } |
| 317 | |
| 318 | return 0; |
| 319 | } |
| 320 | #endif |
| 321 | |
| 322 | |
| 323 | /* Utility to determine if URI is local to this host. */ |
| 324 | static pj_bool_t is_uri_local(const pjsip_sip_uri *uri) |
| 325 | { |
| 326 | unsigned i; |
| 327 | for (i=0; i<global.name_cnt; ++i) { |
| 328 | if ((uri->port == global.name[i].port || |
| 329 | (uri->port==0 && global.name[i].port==5060)) && |
| 330 | pj_stricmp(&uri->host, &global.name[i].host)==0) |
| 331 | { |
| 332 | /* Match */ |
| 333 | return PJ_TRUE; |
| 334 | } |
| 335 | } |
| 336 | |
| 337 | /* Doesn't match */ |
| 338 | return PJ_FALSE; |
| 339 | } |
| 340 | |
| 341 | |
| 342 | /* Proxy utility to verify incoming requests. |
| 343 | * Return non-zero if verification failed. |
| 344 | */ |
| 345 | static pj_status_t proxy_verify_request(pjsip_rx_data *rdata) |
| 346 | { |
| 347 | const pj_str_t STR_PROXY_REQUIRE = {"Proxy-Require", 13}; |
| 348 | |
| 349 | /* RFC 3261 Section 16.3 Request Validation */ |
| 350 | |
| 351 | /* Before an element can proxy a request, it MUST verify the message's |
| 352 | * validity. A valid message must pass the following checks: |
| 353 | * |
| 354 | * 1. Reasonable Syntax |
| 355 | * 2. URI scheme |
| 356 | * 3. Max-Forwards |
| 357 | * 4. (Optional) Loop Detection |
| 358 | * 5. Proxy-Require |
| 359 | * 6. Proxy-Authorization |
| 360 | */ |
| 361 | |
| 362 | /* 1. Reasonable Syntax. |
| 363 | * This would have been checked by transport layer. |
| 364 | */ |
| 365 | |
| 366 | /* 2. URI scheme. |
| 367 | * We only want to support "sip:"/"sips:" URI scheme for this simple proxy. |
| 368 | */ |
| 369 | if (!PJSIP_URI_SCHEME_IS_SIP(rdata->msg_info.msg->line.req.uri) && |
| 370 | !PJSIP_URI_SCHEME_IS_SIPS(rdata->msg_info.msg->line.req.uri)) |
| 371 | { |
| 372 | pjsip_endpt_respond_stateless(global.endpt, rdata, |
| 373 | PJSIP_SC_UNSUPPORTED_URI_SCHEME, NULL, |
| 374 | NULL, NULL); |
| 375 | return PJSIP_ERRNO_FROM_SIP_STATUS(PJSIP_SC_UNSUPPORTED_URI_SCHEME); |
| 376 | } |
| 377 | |
| 378 | /* 3. Max-Forwards. |
| 379 | * Send error if Max-Forwards is 1 or lower. |
| 380 | */ |
| 381 | if (rdata->msg_info.max_fwd && rdata->msg_info.max_fwd->ivalue <= 1) { |
| 382 | pjsip_endpt_respond_stateless(global.endpt, rdata, |
| 383 | PJSIP_SC_TOO_MANY_HOPS, NULL, |
| 384 | NULL, NULL); |
| 385 | return PJSIP_ERRNO_FROM_SIP_STATUS(PJSIP_SC_TOO_MANY_HOPS); |
| 386 | } |
| 387 | |
| 388 | /* 4. (Optional) Loop Detection. |
| 389 | * Nah, we don't do that with this simple proxy. |
| 390 | */ |
| 391 | |
| 392 | /* 5. Proxy-Require */ |
| 393 | if (pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &STR_PROXY_REQUIRE, |
| 394 | NULL) != NULL) |
| 395 | { |
| 396 | pjsip_endpt_respond_stateless(global.endpt, rdata, |
| 397 | PJSIP_SC_BAD_EXTENSION, NULL, |
| 398 | NULL, NULL); |
| 399 | return PJSIP_ERRNO_FROM_SIP_STATUS(PJSIP_SC_BAD_EXTENSION); |
| 400 | } |
| 401 | |
| 402 | /* 6. Proxy-Authorization. |
| 403 | * Nah, we don't require any authorization with this sample. |
| 404 | */ |
| 405 | |
| 406 | return PJ_SUCCESS; |
| 407 | } |
| 408 | |
| 409 | |
| 410 | /* Process route information in the reqeust */ |
| 411 | static pj_status_t proxy_process_routing(pjsip_tx_data *tdata) |
| 412 | { |
| 413 | pjsip_sip_uri *target; |
| 414 | pjsip_route_hdr *hroute; |
| 415 | |
| 416 | /* RFC 3261 Section 16.4 Route Information Preprocessing */ |
| 417 | |
| 418 | target = (pjsip_sip_uri*) tdata->msg->line.req.uri; |
| 419 | |
| 420 | /* The proxy MUST inspect the Request-URI of the request. If the |
| 421 | * Request-URI of the request contains a value this proxy previously |
| 422 | * placed into a Record-Route header field (see Section 16.6 item 4), |
| 423 | * the proxy MUST replace the Request-URI in the request with the last |
| 424 | * value from the Route header field, and remove that value from the |
| 425 | * Route header field. The proxy MUST then proceed as if it received |
| 426 | * this modified request. |
| 427 | */ |
| 428 | if (is_uri_local(target)) { |
| 429 | pjsip_route_hdr *r; |
| 430 | pjsip_sip_uri *uri; |
| 431 | |
| 432 | /* Find the first Route header */ |
| 433 | r = hroute = (pjsip_route_hdr*) |
| 434 | pjsip_msg_find_hdr(tdata->msg, PJSIP_H_ROUTE, NULL); |
| 435 | if (r == NULL) { |
| 436 | /* No Route header. This request is destined for this proxy. */ |
| 437 | return PJ_SUCCESS; |
| 438 | } |
| 439 | |
| 440 | /* Find the last Route header */ |
| 441 | while ( (r=(pjsip_route_hdr*)pjsip_msg_find_hdr(tdata->msg, |
| 442 | PJSIP_H_ROUTE, |
| 443 | r->next)) != NULL ) |
| 444 | { |
| 445 | hroute = r; |
| 446 | } |
| 447 | |
| 448 | /* If the last Route header doesn't have ";lr" parameter, then |
| 449 | * this is a strict-routed request indeed, and we follow the steps |
| 450 | * in processing strict-route requests above. |
| 451 | * |
| 452 | * But if it does contain ";lr" parameter, skip the strict-route |
| 453 | * processing. |
| 454 | */ |
| 455 | uri = (pjsip_sip_uri*) |
| 456 | pjsip_uri_get_uri(&hroute->name_addr); |
| 457 | if (uri->lr_param == 0) { |
| 458 | /* Yes this is strict route, so: |
| 459 | * - replace req URI with the URI in Route header, |
| 460 | * - remove the Route header, |
| 461 | * - proceed as if it received this modified request. |
| 462 | */ |
| 463 | tdata->msg->line.req.uri = hroute->name_addr.uri; |
| 464 | target = (pjsip_sip_uri*) tdata->msg->line.req.uri; |
| 465 | pj_list_erase(hroute); |
| 466 | } |
| 467 | } |
| 468 | |
| 469 | /* If the Request-URI contains a maddr parameter, the proxy MUST check |
| 470 | * to see if its value is in the set of addresses or domains the proxy |
| 471 | * is configured to be responsible for. If the Request-URI has a maddr |
| 472 | * parameter with a value the proxy is responsible for, and the request |
| 473 | * was received using the port and transport indicated (explicitly or by |
| 474 | * default) in the Request-URI, the proxy MUST strip the maddr and any |
| 475 | * non-default port or transport parameter and continue processing as if |
| 476 | * those values had not been present in the request. |
| 477 | */ |
| 478 | if (target->maddr_param.slen != 0) { |
| 479 | pjsip_sip_uri maddr_uri; |
| 480 | |
| 481 | maddr_uri.host = target->maddr_param; |
| 482 | maddr_uri.port = global.port; |
| 483 | |
| 484 | if (is_uri_local(&maddr_uri)) { |
| 485 | target->maddr_param.slen = 0; |
| 486 | target->port = 0; |
| 487 | target->transport_param.slen = 0; |
| 488 | } |
| 489 | } |
| 490 | |
| 491 | /* If the first value in the Route header field indicates this proxy, |
| 492 | * the proxy MUST remove that value from the request. |
| 493 | */ |
| 494 | hroute = (pjsip_route_hdr*) |
| 495 | pjsip_msg_find_hdr(tdata->msg, PJSIP_H_ROUTE, NULL); |
| 496 | if (hroute && is_uri_local((pjsip_sip_uri*)hroute->name_addr.uri)) { |
| 497 | pj_list_erase(hroute); |
| 498 | } |
| 499 | |
| 500 | return PJ_SUCCESS; |
| 501 | } |
| 502 | |
| 503 | |
| 504 | /* Postprocess the request before forwarding it */ |
| 505 | static void proxy_postprocess(pjsip_tx_data *tdata) |
| 506 | { |
| 507 | /* Optionally record-route */ |
| 508 | if (global.record_route) { |
| 509 | char uribuf[128]; |
| 510 | pj_str_t uri; |
| 511 | const pj_str_t H_RR = { "Record-Route", 12 }; |
| 512 | pjsip_generic_string_hdr *rr; |
| 513 | |
| 514 | pj_ansi_snprintf(uribuf, sizeof(uribuf), "<sip:%.*s:%d;lr>", |
| 515 | (int)global.name[0].host.slen, |
| 516 | global.name[0].host.ptr, |
| 517 | global.name[0].port); |
| 518 | uri = pj_str(uribuf); |
| 519 | rr = pjsip_generic_string_hdr_create(tdata->pool, |
| 520 | &H_RR, &uri); |
| 521 | pjsip_msg_insert_first_hdr(tdata->msg, (pjsip_hdr*)rr); |
| 522 | } |
| 523 | } |
| 524 | |
| 525 | |
| 526 | /* Calculate new target for the request */ |
| 527 | static pj_status_t proxy_calculate_target(pjsip_rx_data *rdata, |
| 528 | pjsip_tx_data *tdata) |
| 529 | { |
| 530 | pjsip_sip_uri *target; |
| 531 | |
| 532 | /* RFC 3261 Section 16.5 Determining Request Targets */ |
| 533 | |
| 534 | target = (pjsip_sip_uri*) tdata->msg->line.req.uri; |
| 535 | |
| 536 | /* If the Request-URI of the request contains an maddr parameter, the |
| 537 | * Request-URI MUST be placed into the target set as the only target |
| 538 | * URI, and the proxy MUST proceed to Section 16.6. |
| 539 | */ |
| 540 | if (target->maddr_param.slen) { |
| 541 | proxy_postprocess(tdata); |
| 542 | return PJ_SUCCESS; |
| 543 | } |
| 544 | |
| 545 | |
| 546 | /* If the domain of the Request-URI indicates a domain this element is |
| 547 | * not responsible for, the Request-URI MUST be placed into the target |
| 548 | * set as the only target, and the element MUST proceed to the task of |
| 549 | * Request Forwarding (Section 16.6). |
| 550 | */ |
| 551 | if (!is_uri_local(target)) { |
| 552 | proxy_postprocess(tdata); |
| 553 | return PJ_SUCCESS; |
| 554 | } |
| 555 | |
| 556 | /* If the target set for the request has not been predetermined as |
| 557 | * described above, this implies that the element is responsible for the |
| 558 | * domain in the Request-URI, and the element MAY use whatever mechanism |
| 559 | * it desires to determine where to send the request. |
| 560 | */ |
| 561 | |
| 562 | /* We're not interested to receive request destined to us, so |
| 563 | * respond with 404/Not Found (only if request is not ACK!). |
| 564 | */ |
| 565 | if (rdata->msg_info.msg->line.req.method.id != PJSIP_ACK_METHOD) { |
| 566 | pjsip_endpt_respond_stateless(global.endpt, rdata, |
| 567 | PJSIP_SC_NOT_FOUND, NULL, |
| 568 | NULL, NULL); |
| 569 | } |
| 570 | |
| 571 | /* Delete the request since we're not forwarding it */ |
| 572 | pjsip_tx_data_dec_ref(tdata); |
| 573 | |
| 574 | return PJSIP_ERRNO_FROM_SIP_STATUS(PJSIP_SC_NOT_FOUND); |
| 575 | } |
| 576 | |
| 577 | |
| 578 | /* Destroy stack */ |
| 579 | static void destroy_stack(void) |
| 580 | { |
| 581 | pjsip_endpt_destroy(global.endpt); |
| 582 | pj_pool_release(global.pool); |
| 583 | pj_caching_pool_destroy(&global.cp); |
| 584 | |
| 585 | pj_shutdown(); |
| 586 | } |
| 587 | |