| File: | libsofia-sip-ua/nua/nua_session.c |
| Warning: | line 2668, column 25 Although the value stored to 'uas' is used in the enclosing expression, the value is never actually read from 'uas' |
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| 1 | /* |
| 2 | * This file is part of the Sofia-SIP package |
| 3 | * |
| 4 | * Copyright (C) 2006 Nokia Corporation. |
| 5 | * |
| 6 | * Contact: Pekka Pessi <pekka.pessi@nokia.com> |
| 7 | * |
| 8 | * This library is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU Lesser General Public License |
| 10 | * as published by the Free Software Foundation; either version 2.1 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This library is distributed in the hope that it will be useful, but |
| 14 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * Lesser General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU Lesser General Public |
| 19 | * License along with this library; if not, write to the Free Software |
| 20 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
| 21 | * 02110-1301 USA |
| 22 | * |
| 23 | */ |
| 24 | |
| 25 | /**@CFILE nua_session.c |
| 26 | * @brief SIP session handling |
| 27 | * |
| 28 | * @author Pekka Pessi <Pekka.Pessi@nokia.com> |
| 29 | * |
| 30 | * @date Created: Wed Mar 8 16:17:27 EET 2006 ppessi |
| 31 | */ |
| 32 | |
| 33 | #include "config.h" |
| 34 | |
| 35 | #include <stddef.h> |
| 36 | #include <stdlib.h> |
| 37 | #include <string.h> |
| 38 | #include <limits.h> |
| 39 | |
| 40 | #include <assert.h> |
| 41 | |
| 42 | #include <sofia-sip/su_string.h> |
| 43 | #include <sofia-sip/sip_protos.h> |
| 44 | #include <sofia-sip/sip_status.h> |
| 45 | #include <sofia-sip/sip_util.h> |
| 46 | #include <sofia-sip/su_uniqueid.h> |
| 47 | #include <sofia-sip/msg_mime_protos.h> |
| 48 | |
| 49 | #define NTA_INCOMING_MAGIC_Tstruct nua_server_request struct nua_server_request |
| 50 | #define NTA_OUTGOING_MAGIC_Tstruct nua_client_request struct nua_client_request |
| 51 | #define NTA_RELIABLE_MAGIC_Tstruct nua_server_request struct nua_server_request |
| 52 | |
| 53 | #include "nua_stack.h" |
| 54 | #include <sofia-sip/soa.h> |
| 55 | |
| 56 | #ifndef SDP_H |
| 57 | typedef struct sdp_session_s sdp_session_t; |
| 58 | #endif |
| 59 | |
| 60 | /* ---------------------------------------------------------------------- */ |
| 61 | |
| 62 | /** @enum nua_callstate |
| 63 | |
| 64 | The states for SIP session established with INVITE. |
| 65 | |
| 66 | Initially the call states follow the state of the INVITE transaction. If the |
| 67 | initial INVITE transaction fails, the call is terminated. The status codes |
| 68 | 401 and 407 are an exception: if the client (on the left side in the diagram |
| 69 | below) receives them, it enters in #nua_callstate_authenticating state. |
| 70 | |
| 71 | If a re-INVITE transaction fails, the result depends on the status code in |
| 72 | failure. The call can return to the ready state, be terminated immediately, |
| 73 | or be terminated gracefully. The proper action to take is determined with |
| 74 | sip_response_terminates_dialog(). |
| 75 | |
| 76 | @sa @ref nua_call_model, #nua_i_state, nua_invite(), #nua_i_invite |
| 77 | |
| 78 | @par Session State Diagram |
| 79 | |
| 80 | @code |
| 81 | +----------+ |
| 82 | | |---------------------+ |
| 83 | | Init | | |
| 84 | | |----------+ | |
| 85 | +----------+ | | |
| 86 | | | | | |
| 87 | --/INVITE| |INVITE/100 | | |
| 88 | V V | | |
| 89 | +----------+ +----------+ | | |
| 90 | +--------| | | | | | |
| 91 | | 18X +-| Calling | | Received | |INVITE/ | |
| 92 | | /- | | | | | | /18X | |
| 93 | | V +----------+ +----------+ V | |
| 94 | | +----------+ | | | +----------+ | |
| 95 | |---| | |2XX -/ | -/ | | | | |
| 96 | | | Proceed- | | /- 2XX| 18X| | Early | |INVITE/ |
| 97 | | | ing | | | +->| | | /200 |
| 98 | | +----------+ V V +----------+ | |
| 99 | | | +----------+ +----------+ | -/ | |
| 100 | | 2XX| | | | |<--+ 2XX | |
| 101 | | /-| | Complet- | | Complete |<-----------+ |
| 102 | | +->| ing | | |------+ |
| 103 | | +----------+ +----------+ | |
| 104 | | | | | | |
| 105 | |401,407/ -/ACK| |ACK/- |timeout/ | |
| 106 | | /ACK V V | /BYE | |
| 107 | | +----------+ | | |
| 108 | | | | | | |
| 109 | | +--| Ready | | | |
| 110 | | | | | | | |
| 111 | | | +----------+ | | |
| 112 | | | | | | |
| 113 | | BYE/ | |-/BYE | |BYE/ |
| 114 | V /200 | V | |/200 |
| 115 | +----------+ | +----------+ | | |
| 116 | | | | | | | | |
| 117 | |Authentic-| | | Terminat-|<----+ | |
| 118 | | ating | | | ing | | |
| 119 | +----------+ | +----------+ | |
| 120 | | | | |
| 121 | | |[23456]XX/- | |
| 122 | | V | |
| 123 | | +----------+ | |
| 124 | | | | | |
| 125 | +->|Terminated|<--------------+ |
| 126 | | | |
| 127 | +----------+ |
| 128 | | |
| 129 | V |
| 130 | +----------+ |
| 131 | | | |
| 132 | | Init | |
| 133 | | | |
| 134 | +----------+ |
| 135 | @endcode |
| 136 | */ |
| 137 | |
| 138 | /* ---------------------------------------------------------------------- */ |
| 139 | /* Session event usage */ |
| 140 | |
| 141 | /** @internal @brief Session-related state. */ |
| 142 | typedef struct nua_session_usage |
| 143 | { |
| 144 | enum nua_callstate ss_state; /**< Session status (enum nua_callstate) */ |
| 145 | |
| 146 | unsigned ss_100rel:1; /**< Use 100rel, send 183 */ |
| 147 | unsigned ss_alerting:1; /**< 180 is sent/received */ |
| 148 | |
| 149 | unsigned ss_update_needed:2; /**< Send an UPDATE (do O/A if > 1) */ |
| 150 | |
| 151 | unsigned ss_precondition:1; /**< Precondition required */ |
| 152 | |
| 153 | unsigned ss_reporting:1; /**< True if reporting state */ |
| 154 | unsigned : 0; |
| 155 | |
| 156 | struct session_timer { |
| 157 | unsigned interval; /**< Negotiated expiration time */ |
| 158 | enum nua_session_refresher refresher; /**< Our Negotiated role */ |
| 159 | |
| 160 | struct { |
| 161 | unsigned expires, defaults; /**< Value of Session-Expires (delta) */ |
| 162 | unsigned min_se; /**< Minimum session expires */ |
| 163 | /** none, local or remote */ |
| 164 | enum nua_session_refresher refresher; |
| 165 | unsigned supported:1, require:1, :0; |
| 166 | } local, remote; |
| 167 | |
| 168 | unsigned timer_set:1; /**< We have active session timer. */ |
| 169 | } ss_timer[1]; |
| 170 | |
| 171 | char const *ss_reason; /**< Reason for termination. */ |
| 172 | |
| 173 | /* Offer-Answer status */ |
| 174 | char const *ss_oa_recv, *ss_oa_sent; |
| 175 | |
| 176 | /**< Version of user SDP from latest successful O/A */ |
| 177 | int ss_sdp_version; |
| 178 | } nua_session_usage_t; |
| 179 | |
| 180 | static char const Offer[] = "offer", Answer[] = "answer"; |
| 181 | |
| 182 | static char const *nua_session_usage_name(nua_dialog_usage_t const *du); |
| 183 | static int nua_session_usage_add(nua_handle_t *nh, |
| 184 | nua_dialog_state_t *ds, |
| 185 | nua_dialog_usage_t *du); |
| 186 | static void nua_session_usage_remove(nua_handle_t *nh, |
| 187 | nua_dialog_state_t *ds, |
| 188 | nua_dialog_usage_t *du, |
| 189 | nua_client_request_t *cr, |
| 190 | nua_server_request_t *sr); |
| 191 | static void nua_session_usage_refresh(nua_owner_t *, |
| 192 | nua_dialog_state_t *, |
| 193 | nua_dialog_usage_t *, |
| 194 | sip_time_t now); |
| 195 | static int nua_session_usage_shutdown(nua_owner_t *, |
| 196 | nua_dialog_state_t *, |
| 197 | nua_dialog_usage_t *); |
| 198 | |
| 199 | static void signal_call_state_change(nua_handle_t *nh, |
| 200 | nua_session_usage_t *ss, |
| 201 | int status, char const *phrase, |
| 202 | enum nua_callstate next_state); |
| 203 | |
| 204 | static int nua_invite_client_should_ack(nua_client_request_t const *cr); |
| 205 | static int nua_invite_client_ack(nua_client_request_t *cr, tagi_t const *tags); |
| 206 | static int nua_invite_client_complete(nua_client_request_t *cr); |
| 207 | |
| 208 | static nua_usage_class const nua_session_usage[1] = { |
| 209 | { |
| 210 | sizeof (nua_session_usage_t), |
| 211 | sizeof nua_session_usage, |
| 212 | nua_session_usage_add, |
| 213 | nua_session_usage_remove, |
| 214 | nua_session_usage_name, |
| 215 | nua_base_usage_update_params, |
| 216 | NULL((void*)0), |
| 217 | nua_session_usage_refresh, |
| 218 | nua_session_usage_shutdown |
| 219 | }}; |
| 220 | |
| 221 | static char const *nua_session_usage_name(nua_dialog_usage_t const *du) |
| 222 | { |
| 223 | return "session"; |
| 224 | } |
| 225 | |
| 226 | static |
| 227 | int nua_session_usage_add(nua_handle_t *nh, |
| 228 | nua_dialog_state_t *ds, |
| 229 | nua_dialog_usage_t *du) |
| 230 | { |
| 231 | nua_session_usage_t *ss = NUA_DIALOG_USAGE_PRIVATE(du)((void *)((du) + 1)); |
| 232 | |
| 233 | if (ds->ds_has_session) |
| 234 | return -1; |
| 235 | ds->ds_has_session = 1; |
| 236 | ds->ds_got_session = 1; |
| 237 | |
| 238 | ss->ss_timer->local.refresher = nua_any_refresher; |
| 239 | ss->ss_timer->remote.refresher = nua_any_refresher; |
| 240 | |
| 241 | return 0; |
| 242 | } |
| 243 | |
| 244 | static |
| 245 | void nua_session_usage_remove(nua_handle_t *nh, |
| 246 | nua_dialog_state_t *ds, |
| 247 | nua_dialog_usage_t *du, |
| 248 | nua_client_request_t *cr0, |
| 249 | nua_server_request_t *sr0) |
| 250 | { |
| 251 | nua_session_usage_t *ss = NUA_DIALOG_USAGE_PRIVATE(du)((void *)((du) + 1)); |
| 252 | nua_client_request_t *cr, *cr_next; |
| 253 | nua_server_request_t *sr; |
| 254 | |
| 255 | /* Destroy queued INVITE transactions */ |
| 256 | for (cr = ds->ds_cr; cr; cr = cr_next) { |
| 257 | cr_next = cr->cr_next; |
| 258 | |
| 259 | if (cr->cr_method != sip_method_invite) |
| 260 | continue; |
| 261 | |
| 262 | if (cr == cr0) |
| 263 | continue; |
| 264 | |
| 265 | nua_client_request_ref(cr); |
| 266 | |
| 267 | if (nua_invite_client_should_ack(cr)) { |
| 268 | ss->ss_reporting = 1; |
| 269 | nua_invite_client_ack(cr, NULL((void*)0)); |
| 270 | ss->ss_reporting = 0; |
| 271 | } |
| 272 | |
| 273 | if (cr == du->du_cr && cr->cr_orq) { |
| 274 | nua_client_request_unref(cr); |
| 275 | continue; |
| 276 | } |
| 277 | |
| 278 | if (cr->cr_status < 200) { |
| 279 | nua_stack_event(nh->nh_nua, nh, |
| 280 | NULL((void*)0), |
| 281 | (enum nua_event_e)cr->cr_event, |
| 282 | SIP_481_NO_TRANSACTION481, sip_481_No_transaction, |
| 283 | NULL((void*)0)); |
| 284 | } |
| 285 | |
| 286 | nua_client_request_remove(cr); |
| 287 | |
| 288 | nua_client_request_unref(cr); |
| 289 | |
| 290 | cr_next = ds->ds_cr; |
| 291 | } |
| 292 | |
| 293 | if (ss->ss_state != nua_callstate_terminated && |
| 294 | ss->ss_state != nua_callstate_init && |
| 295 | !ss->ss_reporting) { |
| 296 | int status = 0; char const *phrase = "Terminated"; |
| 297 | |
| 298 | if (cr0) |
| 299 | status = cr0->cr_status, phrase = cr0->cr_phrase ? cr0->cr_phrase : phrase; |
| 300 | else if (sr0) |
| 301 | status = sr0->sr_status, phrase = sr0->sr_phrase; |
| 302 | |
| 303 | signal_call_state_change(nh, ss, status, phrase, nua_callstate_terminated); |
| 304 | } |
| 305 | |
| 306 | /* Application can respond to BYE after the session usage has terminated */ |
| 307 | for (sr = ds->ds_sr; sr; sr = sr->sr_next) { |
| 308 | if (sr->sr_usage == du && sr->sr_method == sip_method_bye) |
| 309 | sr->sr_usage = NULL((void*)0); |
| 310 | } |
| 311 | |
| 312 | ds->ds_has_session = 0; |
| 313 | nh->nh_has_invite = 0; |
| 314 | nh->nh_active_call = 0; |
| 315 | nh->nh_hold_remote = 0; |
| 316 | |
| 317 | if (nh->nh_soa) |
| 318 | soa_destroy(nh->nh_soa), nh->nh_soa = NULL((void*)0); |
| 319 | } |
| 320 | |
| 321 | static |
| 322 | nua_dialog_usage_t *nua_dialog_usage_for_session(nua_dialog_state_t const *ds) |
| 323 | { |
| 324 | if (ds == ((nua_handle_t *)NULL((void*)0))->nh_ds) |
| 325 | return NULL((void*)0); |
| 326 | |
| 327 | return nua_dialog_usage_get(ds, nua_session_usage, NULL((void*)0)); |
| 328 | } |
| 329 | |
| 330 | static |
| 331 | nua_session_usage_t *nua_session_usage_for_dialog(nua_dialog_state_t const *ds) |
| 332 | { |
| 333 | nua_dialog_usage_t *du; |
| 334 | |
| 335 | if (ds == ((nua_handle_t *)NULL((void*)0))->nh_ds) |
| 336 | return NULL((void*)0); |
| 337 | |
| 338 | du = nua_dialog_usage_get(ds, nua_session_usage, NULL((void*)0)); |
| 339 | |
| 340 | return (nua_session_usage_t *)nua_dialog_usage_private(du)((du) ? (void*)((du) + 1) : ((void*)0)); |
| 341 | } |
| 342 | |
| 343 | /** Zap the session associated with the handle */ |
| 344 | static |
| 345 | void nua_session_usage_destroy(nua_handle_t *nh, |
| 346 | nua_session_usage_t *ss) |
| 347 | { |
| 348 | /* Remove usage */ |
| 349 | nua_dialog_usage_remove(nh, nh->nh_ds, nua_dialog_usage_public(ss)((ss) ? (nua_dialog_usage_t*)(ss) - 1 : ((void*)0)), NULL((void*)0), NULL((void*)0)); |
| 350 | |
| 351 | SU_DEBUG_5(("nua: terminated session %p\n", (void *)nh))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 351, "nua: terminated session %p\n" , (void *)nh)) : (void)0); |
| 352 | } |
| 353 | |
| 354 | /* ======================================================================== */ |
| 355 | /* INVITE and call (session) processing */ |
| 356 | |
| 357 | static int session_timer_is_supported(struct session_timer const *t); |
| 358 | |
| 359 | static void session_timer_preferences(struct session_timer *t, |
| 360 | sip_t const *sip, |
| 361 | sip_supported_t const *supported, |
| 362 | unsigned expires, int isset, |
| 363 | enum nua_session_refresher refresher, |
| 364 | unsigned min_se); |
| 365 | |
| 366 | static void session_timer_store(struct session_timer *t, |
| 367 | sip_t const *sip); |
| 368 | |
| 369 | static int session_timer_check_min_se(msg_t *msg, sip_t *sip, |
| 370 | sip_t const *request, |
| 371 | unsigned long min_se); |
| 372 | |
| 373 | static int session_timer_add_headers(struct session_timer *t, |
| 374 | int initial, |
| 375 | msg_t *msg, sip_t *sip, |
| 376 | nua_handle_t *nh); |
| 377 | |
| 378 | static void session_timer_negotiate(struct session_timer *t, int uas); |
| 379 | |
| 380 | static void session_timer_set(nua_session_usage_t *ss, int uas); |
| 381 | |
| 382 | static int session_timer_check_restart(nua_client_request_t *cr, |
| 383 | int status, char const *phrase, |
| 384 | sip_t const *sip); |
| 385 | |
| 386 | static int nh_referral_check(nua_handle_t *nh, tagi_t const *tags); |
| 387 | static void nh_referral_respond(nua_handle_t *, |
| 388 | int status, char const *phrase); |
| 389 | |
| 390 | static |
| 391 | int session_get_description(sip_t const *sip, |
| 392 | char const **return_sdp, |
| 393 | size_t *return_len); |
| 394 | |
| 395 | static |
| 396 | int session_include_description(soa_session_t *soa, |
| 397 | int session, |
| 398 | msg_t *msg, |
| 399 | sip_t *sip); |
| 400 | |
| 401 | static |
| 402 | int session_make_description(su_home_t *home, |
| 403 | soa_session_t *soa, |
| 404 | int session, |
| 405 | sip_content_disposition_t **return_cd, |
| 406 | sip_content_type_t **return_ct, |
| 407 | sip_payload_t **return_pl); |
| 408 | |
| 409 | static |
| 410 | int nua_server_retry_after(nua_server_request_t *sr, |
| 411 | int status, char const *phrase, |
| 412 | int min, int max); |
| 413 | |
| 414 | /**@fn void nua_invite(nua_handle_t *nh, tag_type_t tag, tag_value_t value, ...); |
| 415 | * |
| 416 | * Place a call using SIP @b INVITE method. |
| 417 | * |
| 418 | * The INVITE method is used to initiate a call between two parties. The |
| 419 | * call is also known as <i>SIP session</i>. |
| 420 | * |
| 421 | * At SIP level the session is represented as @e Dialog, which is a |
| 422 | * peer-to-peer association between two SIP User-Agents. The dialog is |
| 423 | * established by a successful 2XX response to the INVITE. The dialog is |
| 424 | * terminated by BYE transaction, which application can initiate with |
| 425 | * nua_bye() call. |
| 426 | * |
| 427 | * An @e early @e dialog is established by an preliminary response |
| 428 | * (101..199), such as <i>180 Ringing</i>. An early dialog is terminated |
| 429 | * with an error response with response code in range 300...699. |
| 430 | * |
| 431 | * The media session belonging to the SIP session is usually represented by |
| 432 | * SDP, Session Description Protocol. The media session it is usually |
| 433 | * established during the call set-up with procedure known as SDP |
| 434 | * Offer/Answer exchange, defined by @RFC3264. See <b>Media Session |
| 435 | * Handling</b> below for details. |
| 436 | * |
| 437 | * @param nh Pointer to operation handle |
| 438 | * @param tag, value, ... List of tagged parameters |
| 439 | * |
| 440 | * @return |
| 441 | * nothing |
| 442 | * |
| 443 | * @par Events: |
| 444 | * #nua_r_invite \n |
| 445 | * #nua_i_state (#nua_i_active, #nua_i_terminated) \n |
| 446 | * #nua_i_media_error \n |
| 447 | * #nua_i_fork \n |
| 448 | * |
| 449 | * @par Tags: |
| 450 | * NUTAG_AUTH_CACHE() \n |
| 451 | * NUTAG_AUTOACK() \n |
| 452 | * NUTAG_AUTOANSWER() \n |
| 453 | * NUTAG_EARLY_MEDIA() \n |
| 454 | * NUTAG_ENABLEINVITE() \n |
| 455 | * NUTAG_INITIAL_ROUTE(), NUTAG_INITIAL_ROUTE_STR() \n |
| 456 | * NUTAG_INVITE_TIMER() \n |
| 457 | * NUTAG_MEDIA_ENABLE() \n |
| 458 | * NUTAG_MEDIA_FEATURES() \n |
| 459 | * NUTAG_MIN_SE() \n |
| 460 | * NUTAG_RETRY_COUNT() \n |
| 461 | * NUTAG_SERVICE_ROUTE_ENABLE() \n |
| 462 | * NUTAG_SESSION_REFRESHER() \n |
| 463 | * NUTAG_SESSION_TIMER() \n |
| 464 | * NUTAG_SOA_NAME() \n |
| 465 | * NUTAG_UPDATE_REFRESH() \n |
| 466 | * |
| 467 | * @par Populating SIP Request Message with Tagged Arguments |
| 468 | * The tagged arguments can be used to pass values for any SIP headers to |
| 469 | * the stack. When the INVITE message (or any other SIP message) is created, |
| 470 | * the tagged values saved with nua_handle() are used first, next the tagged |
| 471 | * values given with the operation (nua_invite()) are added. |
| 472 | * |
| 473 | * @par |
| 474 | * When multiple tags for the same header are specified, the behaviour |
| 475 | * depends on the header type. If only a single header field can be included |
| 476 | * in a SIP message, the latest non-NULL value is used, e.g., @Subject. |
| 477 | * However, if the SIP header can consist of multiple lines or header fields |
| 478 | * separated by comma, e.g., @Accept, all the tagged |
| 479 | * values are concatenated. |
| 480 | * |
| 481 | * @par |
| 482 | * However, if a tag value is #SIP_NONE (-1 casted as a void pointer), the |
| 483 | * values from previous tags are ignored. |
| 484 | * |
| 485 | * @par |
| 486 | * Next, values previously set with nua_set_params() or nua_set_hparams() |
| 487 | * are used: @Allow, @Supported, @Organization, and @UserAgent headers are |
| 488 | * added to the request if they are not already set. |
| 489 | * |
| 490 | * @par |
| 491 | * Now, the target URI for the request needs to be determined. |
| 492 | * |
| 493 | * @par |
| 494 | * For initial INVITE requests, values from tags are used. If NUTAG_URL() is |
| 495 | * given, it is used as target URI. Otherwise, if SIPTAG_TO() is given, it |
| 496 | * is used as target URI. If neither is given, the complete request line |
| 497 | * already specified using SIPTAG_REQUEST() or SIPTAG_REQUEST_STR() is used. |
| 498 | * If none of the tags above are given, an internal error is returned to the |
| 499 | * application. At this point, the target URI is stored in the request line, |
| 500 | * together with method name ("INVITE") and protocol version ("SIP/2.0"). |
| 501 | * The initial dialog information is also created: @CallID, @CSeq headers |
| 502 | * are generated, if they do not exist, and an unique tag is added to @From |
| 503 | * header. |
| 504 | * |
| 505 | * @par |
| 506 | * For the initial INVITE requests, the @Route headers specified by |
| 507 | * SIPTAG_ROUTE()/SIPTAG_ROUTER_STR() tags in nua_handle() and nua_invite() |
| 508 | * calls are inserted to the request. Next the initial route set specified |
| 509 | * by NUTAG_INITIAL_ROUTE()/NUTAG_INITIAL_ROUTE_STR() tags is prepended to |
| 510 | * the route. Finally (unless NUTAG_SERVICE_ROUTE_ENABLE(0) is used) the |
| 511 | * @ServiceRoute set received from the registrar is also appended to the |
| 512 | * route set of the initial request message. |
| 513 | * |
| 514 | * @par |
| 515 | * Next, the stack generates a @Contact header for the request (Unless the |
| 516 | * application already gave a @Contact header or it does not want to use |
| 517 | * @Contact and indicates that by including SIPTAG_CONTACT(NULL) or |
| 518 | * SIPTAG_CONTACT(SIP_NONE) in the tagged parameters.) If the application |
| 519 | * has a registration active, the @Contact header used with registration is |
| 520 | * used. Otherwise, the @Contact header is generated from the local IP |
| 521 | * address and port number, taking also the values from NUTAG_M_DISPLAY(), |
| 522 | * NUTAG_M_FEATURES(), NUTAG_M_PARAMS(), and NUTAG_M_USERNAME(). |
| 523 | * |
| 524 | * @par |
| 525 | * For in-dialog INVITE (re-INVITE), the request URI is taken from the |
| 526 | * @Contact header received from the remote party during the dialog |
| 527 | * establishment. Also, the @CallID and @CSeq headers and @From and @To tags |
| 528 | * are generated based on the dialog information and added to the request. |
| 529 | * If the dialog has a route (set by @RecordRoute headers), it is added to |
| 530 | * the request, too. |
| 531 | * |
| 532 | * @par |
| 533 | * @MaxForwards header (with default value set by NTATAG_MAX_FORWARDS()) is |
| 534 | * also added now, if it does not exist. |
| 535 | * |
| 536 | * @par |
| 537 | * The INVITE request message created by nua_invite() operation is saved as |
| 538 | * a template for automatic re-INVITE requests sent by the session timer |
| 539 | * ("timer") feature (see NUTAG_SESSION_TIMER() for more details). Please |
| 540 | * note that the template message is not used when ACK, PRACK, UPDATE or |
| 541 | * INFO requests are created (however, these requests will include |
| 542 | * dialog-specific headers like @To, @From, and @CallID as well as |
| 543 | * preference headers @Allow, @Supported, @UserAgent, @Organization). |
| 544 | * |
| 545 | * @par Tags Related to SIP Headers and Request-URI |
| 546 | * NUTAG_URL(), SIPTAG_REQUEST(), SIPTAG_REQUEST_STR() \n |
| 547 | * NUTAG_INITIAL_ROUTE(), NUTAG_INITIAL_ROUTE_STR(), |
| 548 | * SIPTAG_ROUTE(), SIPTAG_ROUTE_STR(), |
| 549 | * NUTAG_SERVICE_ROUTE_ENABLE() \n |
| 550 | * SIPTAG_MAX_FORWARDS(), SIPTAG_MAX_FORWARDS_STR() \n |
| 551 | * SIPTAG_PROXY_REQUIRE(), SIPTAG_PROXY_REQUIRE_STR() \n |
| 552 | * SIPTAG_FROM(), SIPTAG_FROM_STR() \n |
| 553 | * SIPTAG_TO(), SIPTAG_TO_STR() \n |
| 554 | * SIPTAG_CALL_ID(), SIPTAG_CALL_ID_STR() \n |
| 555 | * SIPTAG_CSEQ(), SIPTAG_CSEQ_STR() |
| 556 | * (note that @CSeq value is incremented if request gets retried)\n |
| 557 | * SIPTAG_CONTACT(), SIPTAG_CONTACT_STR() \n |
| 558 | * SIPTAG_REQUEST_DISPOSITION(), SIPTAG_REQUEST_DISPOSITION_STR() \n |
| 559 | * SIPTAG_ACCEPT_CONTACT(), SIPTAG_ACCEPT_CONTACT_STR() \n |
| 560 | * SIPTAG_REJECT_CONTACT(), SIPTAG_REJECT_CONTACT_STR() \n |
| 561 | * SIPTAG_EXPIRES(), SIPTAG_EXPIRES_STR() \n |
| 562 | * SIPTAG_DATE(), SIPTAG_DATE_STR() \n |
| 563 | * SIPTAG_TIMESTAMP(), SIPTAG_TIMESTAMP_STR() \n |
| 564 | * SIPTAG_SUBJECT(), SIPTAG_SUBJECT_STR() \n |
| 565 | * SIPTAG_PRIORITY(), SIPTAG_PRIORITY_STR() \n |
| 566 | * SIPTAG_CALL_INFO(), SIPTAG_CALL_INFO_STR() \n |
| 567 | * SIPTAG_ORGANIZATION(), SIPTAG_ORGANIZATION_STR() \n |
| 568 | * NUTAG_USER_AGENT(), SIPTAG_USER_AGENT() and SIPTAG_USER_AGENT_STR() \n |
| 569 | * SIPTAG_IN_REPLY_TO(), SIPTAG_IN_REPLY_TO_STR() \n |
| 570 | * SIPTAG_ACCEPT(), SIPTAG_ACCEPT_STR() \n |
| 571 | * SIPTAG_ACCEPT_ENCODING(), SIPTAG_ACCEPT_ENCODING_STR() \n |
| 572 | * SIPTAG_ACCEPT_LANGUAGE(), SIPTAG_ACCEPT_LANGUAGE_STR() \n |
| 573 | * NUTAG_ALLOW(), SIPTAG_ALLOW(), and SIPTAG_ALLOW_STR() \n |
| 574 | * NUTAG_EARLY_MEDIA(), SIPTAG_REQUIRE(), and SIPTAG_REQUIRE_STR() \n |
| 575 | * NUTAG_SUPPORTED(), SIPTAG_SUPPORTED(), and SIPTAG_SUPPORTED_STR() \n |
| 576 | * SIPTAG_ALLOW_EVENTS(), SIPTAG_ALLOW_EVENTS_STR() \n |
| 577 | * SIPTAG_PROXY_AUTHORIZATION(), SIPTAG_PROXY_AUTHORIZATION_STR() \n |
| 578 | * SIPTAG_AUTHORIZATION(), SIPTAG_AUTHORIZATION_STR() \n |
| 579 | * SIPTAG_REFERRED_BY(), SIPTAG_REFERRED_BY_STR() \n |
| 580 | * SIPTAG_REPLACES(), SIPTAG_REPLACES_STR() \n |
| 581 | * NUTAG_SESSION_TIMER(), NUTAG_SESSION_REFRESHER(), |
| 582 | * SIPTAG_SESSION_EXPIRES(), SIPTAG_SESSION_EXPIRES_STR() \n |
| 583 | * NUTAG_MIN_SE(), SIPTAG_MIN_SE(), SIPTAG_MIN_SE_STR() \n |
| 584 | * SIPTAG_SECURITY_CLIENT(), SIPTAG_SECURITY_CLIENT_STR() \n |
| 585 | * SIPTAG_SECURITY_VERIFY(), SIPTAG_SECURITY_VERIFY_STR() \n |
| 586 | * SIPTAG_PRIVACY(), SIPTAG_PRIVACY_STR() \n |
| 587 | * SIPTAG_MIME_VERSION(), SIPTAG_MIME_VERSION_STR() \n |
| 588 | * SIPTAG_CONTENT_TYPE(), SIPTAG_CONTENT_TYPE_STR() \n |
| 589 | * SIPTAG_CONTENT_ENCODING(), SIPTAG_CONTENT_ENCODING_STR() \n |
| 590 | * SIPTAG_CONTENT_LANGUAGE(), SIPTAG_CONTENT_LANGUAGE_STR() \n |
| 591 | * SIPTAG_CONTENT_DISPOSITION(), SIPTAG_CONTENT_DISPOSITION_STR() \n |
| 592 | * SIPTAG_HEADER(), SIPTAG_HEADER_STR() \n |
| 593 | * SIPTAG_PAYLOAD(), SIPTAG_PAYLOAD_STR() \n |
| 594 | * |
| 595 | * @par SDP Handling |
| 596 | * By default the nua_invite() uses an @ref soa_session_t "SOA media |
| 597 | * session" object to take care of the Offer/Answer exchange. The SOA can |
| 598 | * be disabled with tag NUTAG_MEDIA_ENABLE(0). |
| 599 | * |
| 600 | * @par |
| 601 | * The SDP description of the |
| 602 | * @ref soa_session_t "soa media session" is included in the INVITE request |
| 603 | * as a message body. |
| 604 | * The SDP in the message body of the 1XX or 2XX response message is |
| 605 | * interpreted as an answer, given to the @ref soa_session_t "soa media |
| 606 | * session" object for processing. |
| 607 | * |
| 608 | * @bug If the INVITE request already contains a message body, SDP is not |
| 609 | * added. Also, if the response contains a multipart body, it is not parsed. |
| 610 | * |
| 611 | * @par Tags Related to SDP Management and Offer/Answer Model: |
| 612 | * NUTAG_MEDIA_ENABLE(), \n |
| 613 | * NUTAG_INCLUDE_EXTRA_SDP(), \n |
| 614 | * SOATAG_HOLD(), SOATAG_AF(), SOATAG_ADDRESS(), |
| 615 | * SOATAG_ORDERED_USER(), SOATAG_REUSE_REJECTED(), |
| 616 | * SOATAG_RTP_SELECT(), SOATAG_RTP_SORT(), SOATAG_RTP_MISMATCH(), |
| 617 | * SOATAG_AUDIO_AUX(), \n |
| 618 | * SOATAG_USER_SDP() or SOATAG_USER_SDP_STR() \n |
| 619 | * |
| 620 | * @par Alternative Call Models |
| 621 | * In addition to the basic SIP call model described in @RFC3261 and |
| 622 | * @RFC3264, the early media model described in @RFC3262 is available. The |
| 623 | * use of 100rel and early media can be use can be forced with |
| 624 | * NUTAG_EARLY_MEDIA(1). |
| 625 | * |
| 626 | * Also, the "precondition" call model described in @RFC3312 is supported at |
| 627 | * SIP level, that is, the SIP PRACK and UPDATE requests are sent if |
| 628 | * "precondition" is added to the @Require header in the INVITE request. |
| 629 | * |
| 630 | * Optionally |
| 631 | * - uses early media if NUTAG_EARLY_MEDIA() tag is used with non zero-value |
| 632 | * - media parameters can be set by SOA tags |
| 633 | * - nua_invite() can be used to change status of an existing call: |
| 634 | * - #SOATAG_HOLD tag can be used to list the media that will be put on hold, |
| 635 | * the value "*" sets all the media beloginging to the session on hold |
| 636 | * |
| 637 | * @par Authentication |
| 638 | * The INVITE request may need authentication. Each proxy or server |
| 639 | * requiring authentication can respond with 401 or 407 response. The |
| 640 | * nua_authenticate() operation stores authentication information (username |
| 641 | * and password) to the handle, and stack tries to authenticate all the rest |
| 642 | * of the requests (e.g., PRACK, ACK, UPDATE, re-INVITE, BYE) using the |
| 643 | * stored username and password. |
| 644 | * |
| 645 | * @sa @ref nua_call_model, #nua_r_invite, #nua_i_state, \n |
| 646 | * nua_handle_has_active_call() \n |
| 647 | * nua_handle_has_call_on_hold()\n |
| 648 | * nua_handle_has_invite() \n |
| 649 | * nua_authenticate() \n |
| 650 | * nua_prack() \n |
| 651 | * nua_update() \n |
| 652 | * nua_info() \n |
| 653 | * nua_cancel() \n |
| 654 | * nua_bye() \n |
| 655 | * #nua_i_invite, nua_respond() |
| 656 | */ |
| 657 | |
| 658 | /* Tags not implemented |
| 659 | * NUTAG_REFER_PAUSE() \n |
| 660 | */ |
| 661 | |
| 662 | static int nua_invite_client_init(nua_client_request_t *cr, |
| 663 | msg_t *msg, sip_t *sip, |
| 664 | tagi_t const *tags); |
| 665 | static int nua_invite_client_request(nua_client_request_t *cr, |
| 666 | msg_t *msg, sip_t *sip, |
| 667 | tagi_t const *tags); |
| 668 | static int nua_invite_client_preliminary(nua_client_request_t *cr, |
| 669 | int status, char const *phrase, |
| 670 | sip_t const *sip); |
| 671 | static int nua_invite_client_response(nua_client_request_t *cr, |
| 672 | int status, char const *phrase, |
| 673 | sip_t const *sip); |
| 674 | static int nua_session_client_response(nua_client_request_t *cr, |
| 675 | int status, char const *phrase, |
| 676 | sip_t const *sip); |
| 677 | static int nua_invite_client_report(nua_client_request_t *cr, |
| 678 | int status, char const *phrase, |
| 679 | sip_t const *sip, |
| 680 | nta_outgoing_t *orq, |
| 681 | tagi_t const *tags); |
| 682 | |
| 683 | nua_client_methods_t const nua_invite_client_methods = { |
| 684 | SIP_METHOD_INVITEsip_method_invite, "INVITE", /* crm_method, crm_method_name */ |
| 685 | 0, /* crm_extra */ |
| 686 | { /* crm_flags */ |
| 687 | /* create_dialog */ 1, |
| 688 | /* in_dialog */ 1, |
| 689 | /* target refresh */ 1 |
| 690 | }, |
| 691 | NULL((void*)0), /* crm_template */ |
| 692 | nua_invite_client_init, /* crm_init */ |
| 693 | nua_invite_client_request, /* crm_send */ |
| 694 | session_timer_check_restart, /* crm_check_restart */ |
| 695 | nua_invite_client_response, /* crm_recv */ |
| 696 | nua_invite_client_preliminary, /* crm_preliminary */ |
| 697 | nua_invite_client_report, /* crm_report */ |
| 698 | nua_invite_client_complete, /* crm_complete */ |
| 699 | }; |
| 700 | |
| 701 | extern nua_client_methods_t const nua_bye_client_methods; |
| 702 | extern nua_client_methods_t const nua_cancel_client_methods; |
| 703 | extern nua_client_methods_t const nua_update_client_methods; |
| 704 | extern nua_client_methods_t const nua_prack_client_methods; |
| 705 | |
| 706 | int nua_stack_invite(nua_t *nua, nua_handle_t *nh, nua_event_t e, |
| 707 | tagi_t const *tags) |
| 708 | { |
| 709 | return nua_client_create(nh, e, &nua_invite_client_methods, tags); |
| 710 | } |
| 711 | |
| 712 | static int nua_invite_client_init(nua_client_request_t *cr, |
| 713 | msg_t *msg, sip_t *sip, |
| 714 | tagi_t const *tags) |
| 715 | { |
| 716 | nua_handle_t *nh = cr->cr_owner; |
| 717 | nua_dialog_usage_t *du; |
| 718 | nua_session_usage_t *ss; |
| 719 | |
| 720 | cr->cr_usage = du = nua_dialog_usage_for_session(nh->nh_ds); |
| 721 | /* Errors returned by nua_invite_client_init() |
| 722 | do not change the session state */ |
| 723 | cr->cr_neutral = 1; |
| 724 | |
| 725 | if (nh_is_special(nh) || |
| 726 | nua_stack_set_handle_special(nh, nh_has_invite, nua_i_error)) |
| 727 | return nua_client_return(cr, 900, "Invalid handle for INVITE", msg); |
| 728 | else if (nh_referral_check(nh, tags) < 0) |
| 729 | return nua_client_return(cr, 900, "Invalid referral", msg); |
| 730 | |
| 731 | if (du) { |
| 732 | nua_server_request_t *sr; |
| 733 | for (sr = nh->nh_ds->ds_sr; sr; sr = sr->sr_next) |
| 734 | /* INVITE in progress? */ |
| 735 | if (sr->sr_usage == du && sr->sr_method == sip_method_invite && |
| 736 | nua_server_request_is_pending(sr)) |
| 737 | return nua_client_return(cr, SIP_491_REQUEST_PENDING491, sip_491_Request_pending, msg); |
| 738 | cr->cr_initial = 0; |
| 739 | } |
| 740 | else { |
| 741 | du = nua_dialog_usage_add(nh, nh->nh_ds, nua_session_usage, NULL((void*)0)); |
| 742 | cr->cr_initial = 1; |
| 743 | } |
| 744 | |
| 745 | if (!du) |
| 746 | return -1; |
| 747 | |
| 748 | ss = nua_dialog_usage_private(du)((du) ? (void*)((du) + 1) : ((void*)0)); |
| 749 | |
| 750 | if (ss->ss_state >= nua_callstate_terminating) |
| 751 | return nua_client_return(cr, 900, "Session is terminating", msg); |
| 752 | |
| 753 | if (nua_client_bind(cr, du) < 0) |
| 754 | return nua_client_return(cr, 900, "INVITE already in progress", msg); |
| 755 | |
| 756 | cr->cr_neutral = 0; |
| 757 | |
| 758 | session_timer_preferences(ss->ss_timer, |
| 759 | sip, |
| 760 | NH_PGET(nh, supported)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_supported ? (( nh)->nh_prefs)->nhp_supported : ((nh)->nh_nua->nua_handles ->nh_prefs)->nhp_supported), |
| 761 | NH_PGET(nh, session_timer)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_session_timer ? ((nh)->nh_prefs)->nhp_session_timer : ((nh)->nh_nua ->nua_handles->nh_prefs)->nhp_session_timer), |
| 762 | NUA_PISSET(nh->nh_nua, nh, session_timer)((((nh->nh_nua)->nua_handles->nh_prefs)->nhp_set_ .set_bits.nhb_session_timer) || ((nh) && (((nh)->nh_prefs )->nhp_set_.set_bits.nhb_session_timer))), |
| 763 | NH_PGET(nh, refresher)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_refresher ? (( nh)->nh_prefs)->nhp_refresher : ((nh)->nh_nua->nua_handles ->nh_prefs)->nhp_refresher), |
| 764 | NH_PGET(nh, min_se)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_min_se ? ((nh) ->nh_prefs)->nhp_min_se : ((nh)->nh_nua->nua_handles ->nh_prefs)->nhp_min_se)); |
| 765 | |
| 766 | return 0; |
| 767 | } |
| 768 | |
| 769 | static int nua_invite_client_request(nua_client_request_t *cr, |
| 770 | msg_t *msg, sip_t *sip, |
| 771 | tagi_t const *tags) |
| 772 | { |
| 773 | nua_handle_t *nh = cr->cr_owner; |
| 774 | nua_dialog_usage_t *du = cr->cr_usage; |
| 775 | nua_session_usage_t *ss; |
| 776 | int offer_sent = 0, retval; |
| 777 | |
| 778 | if (du == NULL((void*)0)) /* Call terminated */ |
| 779 | return nua_client_return(cr, SIP_481_NO_TRANSACTION481, sip_481_No_transaction, msg); |
| 780 | |
| 781 | ss = NUA_DIALOG_USAGE_PRIVATE(du)((void *)((du) + 1)); |
| 782 | |
| 783 | if (ss->ss_state >= nua_callstate_terminating) |
| 784 | return nua_client_return(cr, 900, "Session is terminating", msg); |
| 785 | |
| 786 | nua_dialog_usage_reset_refresh(du); |
| 787 | |
| 788 | /* Add session timer headers */ |
| 789 | if (session_timer_is_supported(ss->ss_timer)) |
| 790 | session_timer_add_headers(ss->ss_timer, ss->ss_state == nua_callstate_init, |
| 791 | msg, sip, nh); |
| 792 | |
| 793 | ss->ss_100rel = NH_PGET(nh, early_media)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_early_media ? ( (nh)->nh_prefs)->nhp_early_media : ((nh)->nh_nua-> nua_handles->nh_prefs)->nhp_early_media); |
| 794 | ss->ss_precondition = sip_has_feature(sip->sip_require, "precondition"); |
| 795 | if (ss->ss_precondition) |
| 796 | ss->ss_update_needed = ss->ss_100rel = 1; |
| 797 | |
| 798 | if (nh->nh_soa) { |
| 799 | soa_init_offer_answer(nh->nh_soa); |
| 800 | |
| 801 | if (sip->sip_payload) |
| 802 | offer_sent = 0; /* XXX - kludge */ |
| 803 | else if (soa_generate_offer(nh->nh_soa, 0, NULL((void*)0)) < 0) |
| 804 | return -1; |
| 805 | else |
| 806 | offer_sent = 1; |
| 807 | |
| 808 | if (offer_sent > 0 && |
| 809 | session_include_description(nh->nh_soa, 1, msg, sip) < 0) |
| 810 | return nua_client_return(cr, 900, "Internal media error", msg); |
| 811 | |
| 812 | if (NH_PGET(nh, media_features)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_media_features ? ((nh)->nh_prefs)->nhp_media_features : ((nh)->nh_nua ->nua_handles->nh_prefs)->nhp_media_features) && |
| 813 | !nua_dialog_is_established(nh->nh_ds) && |
| 814 | !sip->sip_accept_contact && !sip->sip_reject_contact) { |
| 815 | sip_accept_contact_t ac[1]; |
| 816 | sip_accept_contact_init(ac); |
| 817 | |
| 818 | ac->cp_params = (msg_param_t *) |
| 819 | soa_media_features(nh->nh_soa, 1, msg_home(msg)((su_home_t*)(msg))); |
| 820 | |
| 821 | if (ac->cp_params) { |
| 822 | msg_header_replace_param(msg_home(msg)((su_home_t*)(msg)), ac->cp_common, "explicit"); |
| 823 | sip_add_dup(msg, sip, (sip_header_t *)ac); |
| 824 | } |
| 825 | } |
| 826 | } |
| 827 | else { |
| 828 | offer_sent = session_get_description(sip, NULL((void*)0), NULL((void*)0)); |
| 829 | } |
| 830 | |
| 831 | retval = nua_base_client_trequest(cr, msg, sip, |
| 832 | NTATAG_REL100(ss->ss_100rel)ntatag_rel100, tag_bool_v((ss->ss_100rel)), |
| 833 | TAG_NEXT(tags)tag_next, (tag_value_t)(tags)); |
| 834 | if (retval == 0) { |
| 835 | if ((cr->cr_offer_sent = offer_sent)) |
| 836 | ss->ss_oa_sent = Offer; |
| 837 | |
| 838 | if (!cr->cr_restarting) /* Restart logic calls nua_invite_client_report */ |
| 839 | signal_call_state_change(nh, ss, 0, "INVITE sent", |
| 840 | nua_callstate_calling); |
| 841 | } |
| 842 | |
| 843 | return retval; |
| 844 | } |
| 845 | |
| 846 | static int nua_invite_client_response(nua_client_request_t *cr, |
| 847 | int status, char const *phrase, |
| 848 | sip_t const *sip) |
| 849 | { |
| 850 | nua_dialog_usage_t *du = cr->cr_usage; |
| 851 | nua_session_usage_t *ss = nua_dialog_usage_private(du)((du) ? (void*)((du) + 1) : ((void*)0)); |
| 852 | int uas; |
| 853 | |
| 854 | if (ss == NULL((void*)0) || sip == NULL((void*)0)) { |
| 855 | /* Xyzzy */ |
| 856 | } |
| 857 | else if (status < 300) { |
| 858 | du->du_ready = 1; |
| 859 | |
| 860 | if (session_timer_is_supported(ss->ss_timer)) |
| 861 | session_timer_store(ss->ss_timer, sip); |
| 862 | |
| 863 | session_timer_set(ss, uas = 0); |
| 864 | } |
| 865 | |
| 866 | return nua_session_client_response(cr, status, phrase, sip); |
| 867 | } |
| 868 | |
| 869 | static int nua_invite_client_preliminary(nua_client_request_t *cr, |
| 870 | int status, char const *phrase, |
| 871 | sip_t const *sip) |
| 872 | { |
| 873 | nua_handle_t *nh = cr->cr_owner; |
| 874 | nua_dialog_usage_t *du = cr->cr_usage; |
| 875 | nua_session_usage_t *ss = nua_dialog_usage_private(du)((du) ? (void*)((du) + 1) : ((void*)0)); |
| 876 | |
| 877 | assert(sip)((void) sizeof ((sip) ? 1 : 0), __extension__ ({ if (sip) ; else __assert_fail ("sip", "nua_session.c", 877, __extension__ __PRETTY_FUNCTION__ ); })); |
| 878 | |
| 879 | if (ss && sip && sip->sip_rseq) { |
| 880 | /* Handle 100rel responses */ |
| 881 | sip_rseq_t *rseq = sip->sip_rseq; |
| 882 | |
| 883 | /* Establish early dialog - we should fork here */ |
| 884 | if (!nua_dialog_is_established(nh->nh_ds)) { |
| 885 | nta_outgoing_t *tagged; |
| 886 | |
| 887 | nua_dialog_uac_route(nh, nh->nh_ds, sip, 1, 1); |
| 888 | nua_dialog_store_peer_info(nh, nh->nh_ds, sip); |
| 889 | |
| 890 | /* Tag the INVITE request */ |
| 891 | tagged = nta_outgoing_tagged(cr->cr_orq, |
| 892 | nua_client_orq_response, cr, |
| 893 | sip->sip_to->a_tag, sip->sip_rseq); |
| 894 | if (tagged) { |
| 895 | nta_outgoing_destroy(cr->cr_orq), cr->cr_orq = tagged; |
| 896 | } |
| 897 | else { |
| 898 | cr->cr_graceful = 1; |
| 899 | ss->ss_reason = "SIP;cause=500;text=\"Cannot Create Early Dialog\""; |
| 900 | } |
| 901 | } |
| 902 | |
| 903 | if (!rseq) { |
| 904 | SU_DEBUG_5(("nua(%p): 100rel missing RSeq\n", (void *)nh))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 904, "nua(%p): 100rel missing RSeq\n" , (void *)nh)) : (void)0); |
| 905 | } |
| 906 | else if (nta_outgoing_rseq(cr->cr_orq) > rseq->rs_response) { |
| 907 | SU_DEBUG_5(("nua(%p): 100rel bad RSeq %u (got %u)\n", (void *)nh,((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 909, "nua(%p): 100rel bad RSeq %u (got %u)\n" , (void *)nh, (unsigned)rseq->rs_response, nta_outgoing_rseq (cr->cr_orq))) : (void)0) |
| 908 | (unsigned)rseq->rs_response,((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 909, "nua(%p): 100rel bad RSeq %u (got %u)\n" , (void *)nh, (unsigned)rseq->rs_response, nta_outgoing_rseq (cr->cr_orq))) : (void)0) |
| 909 | nta_outgoing_rseq(cr->cr_orq)))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 909, "nua(%p): 100rel bad RSeq %u (got %u)\n" , (void *)nh, (unsigned)rseq->rs_response, nta_outgoing_rseq (cr->cr_orq))) : (void)0); |
| 910 | return 1; /* Do not send event */ |
| 911 | } |
| 912 | else if (nta_outgoing_setrseq(cr->cr_orq, rseq->rs_response) < 0) { |
| 913 | SU_DEBUG_1(("nua(%p): cannot set RSeq %u\n", (void *)nh,((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 1 ? (_su_llog((nua_log), 1, "nua_session.c" , (const char *)__func__, 914, "nua(%p): cannot set RSeq %u\n" , (void *)nh, (unsigned)rseq->rs_response)) : (void)0) |
| 914 | (unsigned)rseq->rs_response))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 1 ? (_su_llog((nua_log), 1, "nua_session.c" , (const char *)__func__, 914, "nua(%p): cannot set RSeq %u\n" , (void *)nh, (unsigned)rseq->rs_response)) : (void)0); |
| 915 | cr->cr_graceful = 1; |
| 916 | ss->ss_reason = "SIP;cause=400;text=\"Bad RSeq\""; |
| 917 | } |
| 918 | } |
| 919 | |
| 920 | return nua_session_client_response(cr, status, phrase, sip); |
| 921 | } |
| 922 | |
| 923 | /** Process response to a session request (INVITE, PRACK, UPDATE) */ |
| 924 | static int nua_session_client_response(nua_client_request_t *cr, |
| 925 | int status, char const *phrase, |
| 926 | sip_t const *sip) |
| 927 | { |
| 928 | nua_handle_t *nh = cr->cr_owner; |
| 929 | nua_dialog_usage_t *du = cr->cr_usage; |
| 930 | nua_session_usage_t *ss = nua_dialog_usage_private(du)((du) ? (void*)((du) + 1) : ((void*)0)); |
| 931 | |
| 932 | char const *sdp = NULL((void*)0); |
| 933 | size_t len; |
| 934 | char const *received = NULL((void*)0); |
| 935 | |
| 936 | #define LOG3(m)((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 936, "nua(%p): %s: %s %s in %u %s (%u)\n" , (void *)nh, cr->cr_method_name, (m), received ? received : "SDP", status, phrase, cr->cr_answer_recv)) : (void)0) \ |
| 937 | SU_DEBUG_3(("nua(%p): %s: %s %s in %u %s (%u)\n", \((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 939, "nua(%p): %s: %s %s in %u %s (%u)\n" , (void *)nh, cr->cr_method_name, (m), received ? received : "SDP", status, phrase, cr->cr_answer_recv)) : (void)0) |
| 938 | (void *)nh, cr->cr_method_name, (m), \((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 939, "nua(%p): %s: %s %s in %u %s (%u)\n" , (void *)nh, cr->cr_method_name, (m), received ? received : "SDP", status, phrase, cr->cr_answer_recv)) : (void)0) |
| 939 | received ? received : "SDP", status, phrase, cr->cr_answer_recv))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 939, "nua(%p): %s: %s %s in %u %s (%u)\n" , (void *)nh, cr->cr_method_name, (m), received ? received : "SDP", status, phrase, cr->cr_answer_recv)) : (void)0) |
| 940 | #define LOG5(m)((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 940, "nua(%p): %s: %s %s in %u %s (%u)\n" , (void *)nh, cr->cr_method_name, (m), received, status, phrase , cr->cr_answer_recv)) : (void)0) \ |
| 941 | SU_DEBUG_5(("nua(%p): %s: %s %s in %u %s (%u)\n", \((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 942, "nua(%p): %s: %s %s in %u %s (%u)\n" , (void *)nh, cr->cr_method_name, (m), received, status, phrase , cr->cr_answer_recv)) : (void)0) |
| 942 | (void *)nh, cr->cr_method_name, (m), received, status, phrase, cr->cr_answer_recv))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 942, "nua(%p): %s: %s %s in %u %s (%u)\n" , (void *)nh, cr->cr_method_name, (m), received, status, phrase , cr->cr_answer_recv)) : (void)0) |
| 943 | |
| 944 | retry: |
| 945 | |
| 946 | if (!ss || !sip || 300 <= status) |
| 947 | /* Xyzzy */; |
| 948 | else if (!session_get_description(sip, &sdp, &len)) |
| 949 | /* No SDP */; |
| 950 | else if (cr->cr_answer_recv) { |
| 951 | if (status < 200 && cr->cr_answer_recv >= 200) { |
| 952 | LOG3("call already answered, ignoring provisional response")((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 952, "nua(%p): %s: %s %s in %u %s (%u)\n" , (void *)nh, cr->cr_method_name, ("call already answered, ignoring provisional response" ), received ? received : "SDP", status, phrase, cr->cr_answer_recv )) : (void)0); |
| 953 | sdp = NULL((void*)0); |
| 954 | return 0; |
| 955 | } else { |
| 956 | // we need to make sure its *actually* a dup, so we can't assume for now. |
| 957 | LOG3("multiple answers received, processing")((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 957, "nua(%p): %s: %s %s in %u %s (%u)\n" , (void *)nh, cr->cr_method_name, ("multiple answers received, processing" ), received ? received : "SDP", status, phrase, cr->cr_answer_recv )) : (void)0); |
| 958 | cr->cr_answer_recv = 0; |
| 959 | goto retry; |
| 960 | } |
| 961 | } |
| 962 | else if (cr->cr_offer_sent) { |
| 963 | /* case 1: answer to our offer */ |
| 964 | cr->cr_answer_recv = status; |
| 965 | received = Answer; |
| 966 | |
| 967 | if (nh->nh_soa == NULL((void*)0)) |
| 968 | LOG5("got SDP")((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 968, "nua(%p): %s: %s %s in %u %s (%u)\n" , (void *)nh, cr->cr_method_name, ("got SDP"), received, status , phrase, cr->cr_answer_recv)) : (void)0); |
| 969 | else if (soa_set_remote_sdp(nh->nh_soa, NULL((void*)0), sdp, len) < 0) { |
| 970 | LOG3("error parsing SDP")((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 970, "nua(%p): %s: %s %s in %u %s (%u)\n" , (void *)nh, cr->cr_method_name, ("error parsing SDP"), received ? received : "SDP", status, phrase, cr->cr_answer_recv)) : (void)0); |
| 971 | sdp = NULL((void*)0); |
| 972 | cr->cr_graceful = 1; |
| 973 | ss->ss_reason = "SIP;cause=400;text=\"Malformed Session Description\""; |
| 974 | } |
| 975 | else if (soa_process_answer(nh->nh_soa, NULL((void*)0)) < 0) { |
| 976 | LOG5("error processing SDP")((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 976, "nua(%p): %s: %s %s in %u %s (%u)\n" , (void *)nh, cr->cr_method_name, ("error processing SDP") , received, status, phrase, cr->cr_answer_recv)) : (void)0 ); |
| 977 | /* XXX */ |
| 978 | sdp = NULL((void*)0); |
| 979 | } |
| 980 | else if (soa_activate(nh->nh_soa, NULL((void*)0)) < 0) { |
| 981 | /* XXX - what about errors? */ |
| 982 | LOG3("error activating media after")((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 982, "nua(%p): %s: %s %s in %u %s (%u)\n" , (void *)nh, cr->cr_method_name, ("error activating media after" ), received ? received : "SDP", status, phrase, cr->cr_answer_recv )) : (void)0); |
| 983 | } |
| 984 | else { |
| 985 | ss->ss_sdp_version = soa_get_user_version(nh->nh_soa); |
| 986 | LOG5("processed SDP")((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 986, "nua(%p): %s: %s %s in %u %s (%u)\n" , (void *)nh, cr->cr_method_name, ("processed SDP"), received , status, phrase, cr->cr_answer_recv)) : (void)0); |
| 987 | } |
| 988 | } |
| 989 | else if (cr->cr_method != sip_method_invite) { |
| 990 | /* If non-invite request did not have offer, ignore SDP in response */ |
| 991 | LOG3("ignoring extra")((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 991, "nua(%p): %s: %s %s in %u %s (%u)\n" , (void *)nh, cr->cr_method_name, ("ignoring extra"), received ? received : "SDP", status, phrase, cr->cr_answer_recv)) : (void)0); |
| 992 | sdp = NULL((void*)0); |
| 993 | } |
| 994 | else { |
| 995 | /* case 2: new offer */ |
| 996 | cr->cr_offer_recv = 1, cr->cr_answer_sent = 0; |
| 997 | received = Offer; |
| 998 | |
| 999 | if (nh->nh_soa && soa_set_remote_sdp(nh->nh_soa, NULL((void*)0), sdp, len) < 0) { |
| 1000 | LOG3("error parsing SDP")((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 1000, "nua(%p): %s: %s %s in %u %s (%u)\n" , (void *)nh, cr->cr_method_name, ("error parsing SDP"), received ? received : "SDP", status, phrase, cr->cr_answer_recv)) : (void)0); |
| 1001 | sdp = NULL((void*)0); |
| 1002 | cr->cr_graceful = 1; |
| 1003 | ss->ss_reason = "SIP;cause=400;text=\"Malformed Session Description\""; |
| 1004 | } |
| 1005 | else |
| 1006 | LOG5("got SDP")((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 1006, "nua(%p): %s: %s %s in %u %s (%u)\n" , (void *)nh, cr->cr_method_name, ("got SDP"), received, status , phrase, cr->cr_answer_recv)) : (void)0); |
| 1007 | } |
| 1008 | |
| 1009 | if (ss && received) |
| 1010 | ss->ss_oa_recv = received; |
| 1011 | |
| 1012 | if (sdp && nh->nh_soa) |
| 1013 | return nua_base_client_tresponse(cr, status, phrase, sip, |
| 1014 | NH_REMOTE_MEDIA_TAGS(1, nh->nh_soa)!((1) && (nh->nh_soa) && soa_is_remote_audio_active (nh->nh_soa) >= 0) ? tag_skip : soatag_active_audio, tag_int_v (soa_is_remote_audio_active(nh->nh_soa)), !((1) && (nh->nh_soa) && soa_is_remote_video_active(nh-> nh_soa) >= 0) ? tag_skip : soatag_active_video, tag_int_v( soa_is_remote_video_active(nh->nh_soa)), !((1) && ( nh->nh_soa) && soa_is_remote_image_active(nh->nh_soa ) >= 0) ? tag_skip : soatag_active_image, tag_int_v(soa_is_remote_image_active (nh->nh_soa)), !((1) && (nh->nh_soa) && soa_is_remote_chat_active(nh->nh_soa) >= 0) ? tag_skip : soatag_active_chat, tag_int_v(soa_is_remote_chat_active(nh ->nh_soa)), |
| 1015 | TAG_END()(tag_type_t)0, (tag_value_t)0); |
| 1016 | else |
| 1017 | return nua_base_client_response(cr, status, phrase, sip, NULL((void*)0)); |
| 1018 | } |
| 1019 | |
| 1020 | static int nua_invite_client_report(nua_client_request_t *cr, |
| 1021 | int status, char const *phrase, |
| 1022 | sip_t const *sip, |
| 1023 | nta_outgoing_t *orq, |
| 1024 | tagi_t const *tags) |
| 1025 | { |
| 1026 | nua_handle_t *nh = cr->cr_owner; |
| 1027 | nua_dialog_state_t *ds = nh->nh_ds; |
| 1028 | nua_dialog_usage_t *du = cr->cr_usage; |
| 1029 | nua_session_usage_t *ss = nua_dialog_usage_private(du)((du) ? (void*)((du) + 1) : ((void*)0)); |
| 1030 | msg_t *response = nta_outgoing_getresponse(orq); |
| 1031 | unsigned next_state; |
| 1032 | int error; |
| 1033 | |
| 1034 | nh_referral_respond(nh, status, phrase); /* XXX - restarting after 401/407 */ |
| 1035 | |
| 1036 | nua_stack_event(nh->nh_nua, nh, |
| 1037 | response, |
| 1038 | (enum nua_event_e)cr->cr_event, |
| 1039 | status, phrase, |
| 1040 | tags); |
| 1041 | |
| 1042 | if (cr->cr_waiting) |
| 1043 | /* Do not report call state change if waiting for restart */ |
| 1044 | return 1; |
| 1045 | |
| 1046 | if (ss == NULL((void*)0)) { |
| 1047 | signal_call_state_change(nh, ss, status, phrase, nua_callstate_terminated); |
| 1048 | return 1; |
| 1049 | } |
| 1050 | |
| 1051 | ss->ss_reporting = 1; |
| 1052 | |
| 1053 | if (cr->cr_neutral) { |
| 1054 | signal_call_state_change(nh, ss, status, phrase, ss->ss_state); |
| 1055 | ss->ss_reporting = 0; |
| 1056 | return 1; |
| 1057 | } |
| 1058 | |
| 1059 | response = msg_ref_create(response); /* Keep reference to contents of sip */ |
| 1060 | |
| 1061 | if (orq != cr->cr_orq && cr->cr_orq) { /* Being restarted */ |
| 1062 | next_state = nua_callstate_calling; |
| 1063 | } |
| 1064 | else if (status == 100) { |
| 1065 | next_state = nua_callstate_calling; |
| 1066 | } |
| 1067 | else if (status < 300 && cr->cr_graceful) { |
| 1068 | next_state = nua_callstate_terminating; |
| 1069 | if (200 <= status) { |
| 1070 | nua_invite_client_ack(cr, NULL((void*)0)); |
| 1071 | } |
| 1072 | } |
| 1073 | else if (status < 200) { |
| 1074 | next_state = nua_callstate_proceeding; |
| 1075 | |
| 1076 | if (sip && sip->sip_rseq && |
| 1077 | !SIP_IS_ALLOWED(NH_PGET(nh, appl_method), sip_method_prack)(sip_method_unknown < (sip_method_prack) && (sip_method_prack ) < 32 && ((((nh)->nh_prefs)->nhp_set_.set_bits .nhb_appl_method ? ((nh)->nh_prefs)->nhp_appl_method : ( (nh)->nh_nua->nua_handles->nh_prefs)->nhp_appl_method )) && (((((nh)->nh_prefs)->nhp_set_.set_bits.nhb_appl_method ? ((nh)->nh_prefs)->nhp_appl_method : ((nh)->nh_nua ->nua_handles->nh_prefs)->nhp_appl_method))->k_bitmap & (1 << (sip_method_prack))) != 0)) { |
| 1078 | sip_rack_t rack[1]; |
| 1079 | |
| 1080 | sip_rack_init(rack); |
| 1081 | rack->ra_response = sip->sip_rseq->rs_response; |
| 1082 | rack->ra_cseq = sip->sip_cseq->cs_seq; |
| 1083 | rack->ra_method = sip->sip_cseq->cs_method; |
| 1084 | rack->ra_method_name = sip->sip_cseq->cs_method_name; |
| 1085 | |
| 1086 | error = nua_client_tcreate(nh, nua_r_prack, &nua_prack_client_methods, |
| 1087 | SIPTAG_RACK(rack)siptag_rack, siptag_rack_v(rack), |
| 1088 | TAG_END()(tag_type_t)0, (tag_value_t)0); |
| 1089 | if (error < 0) { |
| 1090 | cr->cr_graceful = 1; |
| 1091 | next_state = nua_callstate_terminating; |
| 1092 | } |
| 1093 | } |
| 1094 | } |
| 1095 | else if (status < 300) { |
| 1096 | next_state = nua_callstate_completing; |
| 1097 | } |
| 1098 | else if (cr->cr_terminated) { |
| 1099 | next_state = nua_callstate_terminated; |
| 1100 | } |
| 1101 | else if (cr->cr_graceful && ss->ss_state >= nua_callstate_completing) { |
| 1102 | next_state = nua_callstate_terminating; |
| 1103 | } |
| 1104 | else { |
| 1105 | next_state = nua_callstate_init; |
| 1106 | } |
| 1107 | |
| 1108 | if (next_state == nua_callstate_calling) { |
| 1109 | if (sip && sip->sip_status && sip->sip_status->st_status == 100) { |
| 1110 | ss->ss_reporting = 0; |
| 1111 | return 1; |
| 1112 | } |
| 1113 | } |
| 1114 | |
| 1115 | if (next_state == nua_callstate_completing) { |
| 1116 | if (NH_PGET(nh, auto_ack)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_auto_ack ? ((nh )->nh_prefs)->nhp_auto_ack : ((nh)->nh_nua->nua_handles ->nh_prefs)->nhp_auto_ack) || |
| 1117 | /* Auto-ACK response to re-INVITE when media is enabled |
| 1118 | and auto_ack is not set to 0 on handle */ |
| 1119 | (ss->ss_state == nua_callstate_ready && nh->nh_soa && |
| 1120 | !NH_PISSET(nh, auto_ack)((((nh)->nh_prefs)->nhp_set_.set_bits.nhb_auto_ack) && (nh)->nh_nua->nua_handles->nh_prefs != (nh)->nh_prefs ))) { |
| 1121 | nua_client_request_t *cru; |
| 1122 | |
| 1123 | for (cru = ds->ds_cr; cru; cru = cru->cr_next) { |
| 1124 | if (cr != cru && cru->cr_offer_sent && !cru->cr_answer_recv) |
| 1125 | break; |
| 1126 | } |
| 1127 | |
| 1128 | if (cru) |
| 1129 | /* A final response to UPDATE or PRACK with answer on its way? */; |
| 1130 | else if (nua_invite_client_ack(cr, NULL((void*)0)) > 0) |
| 1131 | next_state = nua_callstate_ready; |
| 1132 | else |
| 1133 | next_state = nua_callstate_terminating; |
| 1134 | } |
| 1135 | } |
| 1136 | |
| 1137 | if (next_state == nua_callstate_terminating) { |
| 1138 | /* Send BYE or CANCEL */ |
| 1139 | /* XXX - Forking - send BYE to early dialog?? */ |
| 1140 | if (ss->ss_state > nua_callstate_proceeding || status >= 200) |
| 1141 | error = nua_client_create(nh, nua_r_bye, &nua_bye_client_methods, NULL((void*)0)); |
| 1142 | else |
| 1143 | error = nua_client_create(nh, nua_r_cancel, |
| 1144 | &nua_cancel_client_methods, tags); |
| 1145 | |
| 1146 | if (error) { |
| 1147 | next_state = nua_callstate_terminated; |
| 1148 | cr->cr_terminated = 1; |
| 1149 | } |
| 1150 | cr->cr_graceful = 0; |
| 1151 | } |
| 1152 | |
| 1153 | ss->ss_reporting = 0; |
| 1154 | |
| 1155 | signal_call_state_change(nh, ss, status, phrase, (enum nua_callstate)next_state); |
| 1156 | |
| 1157 | msg_destroy(response); |
| 1158 | |
| 1159 | return 1; |
| 1160 | } |
| 1161 | |
| 1162 | /**@fn void nua_ack(nua_handle_t *nh, tag_type_t tag, tag_value_t value, ...); |
| 1163 | * |
| 1164 | * Acknowledge a succesful response to INVITE request. |
| 1165 | * |
| 1166 | * Acknowledge a successful response (200..299) to INVITE request with the |
| 1167 | * SIP ACK request message. This function is needed only if NUTAG_AUTOACK() |
| 1168 | * parameter has been cleared. |
| 1169 | * |
| 1170 | * @param nh Pointer to operation handle |
| 1171 | * @param tag, value, ... List of tagged parameters |
| 1172 | * |
| 1173 | * @return |
| 1174 | * nothing |
| 1175 | * |
| 1176 | * @par Related Tags: |
| 1177 | * Header tags defined in <sofia-sip/sip_tag.h> |
| 1178 | * |
| 1179 | * @par Events: |
| 1180 | * #nua_i_media_error \n |
| 1181 | * #nua_i_state (#nua_i_active, #nua_i_terminated) |
| 1182 | * |
| 1183 | * @sa NUTAG_AUTOACK(), @ref nua_call_model, #nua_i_state |
| 1184 | */ |
| 1185 | |
| 1186 | int nua_stack_ack(nua_t *nua, nua_handle_t *nh, nua_event_t e, |
| 1187 | tagi_t const *tags) |
| 1188 | { |
| 1189 | nua_dialog_usage_t *du = nua_dialog_usage_for_session(nh->nh_ds); |
| 1190 | nua_session_usage_t *ss = nua_dialog_usage_private(du)((du) ? (void*)((du) + 1) : ((void*)0)); |
| 1191 | nua_client_request_t *cr = du ? du->du_cr : NULL((void*)0); |
| 1192 | int error; |
| 1193 | |
| 1194 | if (!cr || cr->cr_orq == NULL((void*)0) || cr->cr_status < 200) { |
| 1195 | UA_EVENT2(nua_i_error, 900, "No response to ACK")nua_stack_event(nua, nh, ((void*)0), nua_i_error, 900, "No response to ACK" , ((void*)0)); |
| 1196 | return 1; |
| 1197 | } |
| 1198 | |
| 1199 | if (tags) |
| 1200 | nua_stack_set_params(nua, nh, nua_i_error, tags); |
| 1201 | |
| 1202 | nua_client_request_ref(cr); |
| 1203 | error = nua_invite_client_ack(cr, tags); |
| 1204 | |
| 1205 | if (error < 0) { |
| 1206 | if (ss->ss_reason == NULL((void*)0)) |
| 1207 | ss->ss_reason = "SIP;cause=500;text=\"Internal Error\""; |
| 1208 | ss->ss_reporting = 1; /* We report terminated state here if BYE fails */ |
| 1209 | error = nua_client_create(nh, nua_r_bye, &nua_bye_client_methods, NULL((void*)0)); |
| 1210 | ss->ss_reporting = 0; |
| 1211 | signal_call_state_change(nh, ss, 500, "Internal Error", |
| 1212 | error |
| 1213 | ? nua_callstate_terminated |
| 1214 | : nua_callstate_terminating); |
| 1215 | } |
| 1216 | else if (ss) |
| 1217 | signal_call_state_change(nh, ss, 200, "ACK sent", nua_callstate_ready); |
| 1218 | |
| 1219 | nua_client_request_unref(cr); |
| 1220 | |
| 1221 | return 0; |
| 1222 | } |
| 1223 | |
| 1224 | /** Send ACK, destroy INVITE transaction. |
| 1225 | * |
| 1226 | * @retval 1 if successful |
| 1227 | * @retval < 0 if an error occurred |
| 1228 | */ |
| 1229 | static |
| 1230 | int nua_invite_client_ack(nua_client_request_t *cr, tagi_t const *tags) |
| 1231 | { |
| 1232 | nua_handle_t *nh = cr->cr_owner; |
| 1233 | nua_dialog_state_t *ds = nh->nh_ds; |
| 1234 | nua_session_usage_t *ss = nua_dialog_usage_private(cr->cr_usage)((cr->cr_usage) ? (void*)((cr->cr_usage) + 1) : ((void* )0)); |
| 1235 | |
| 1236 | msg_t *msg; |
| 1237 | sip_t *sip; |
| 1238 | int error = -1; |
| 1239 | sip_authorization_t *wa; |
| 1240 | sip_proxy_authorization_t *pa; |
| 1241 | sip_cseq_t *cseq; |
| 1242 | int proxy_is_set; |
| 1243 | url_string_t *proxy; |
| 1244 | nta_outgoing_t *ack; |
| 1245 | int status = 200; |
| 1246 | char const *phrase = "OK", *reason = NULL((void*)0); |
| 1247 | char const *invite_branch; |
| 1248 | char const *pl_s = NULL((void*)0); |
| 1249 | |
| 1250 | assert(cr->cr_orq)((void) sizeof ((cr->cr_orq) ? 1 : 0), __extension__ ({ if (cr->cr_orq) ; else __assert_fail ("cr->cr_orq", "nua_session.c" , 1250, __extension__ __PRETTY_FUNCTION__); })); |
| 1251 | assert(cr->cr_method == sip_method_invite)((void) sizeof ((cr->cr_method == sip_method_invite) ? 1 : 0), __extension__ ({ if (cr->cr_method == sip_method_invite ) ; else __assert_fail ("cr->cr_method == sip_method_invite" , "nua_session.c", 1251, __extension__ __PRETTY_FUNCTION__); } )); |
| 1252 | |
| 1253 | cr->cr_initial = 0; |
| 1254 | |
| 1255 | if (!ds->ds_leg) { |
| 1256 | /* XXX - fix nua_dialog_usage_remove_at() instead! */ |
| 1257 | goto error; |
| 1258 | } |
| 1259 | |
| 1260 | tl_gets(tags, |
| 1261 | SIPTAG_PAYLOAD_STR_REF(pl_s)siptag_payload_str_ref, tag_str_vr(&(pl_s)), |
| 1262 | TAG_END()(tag_type_t)0, (tag_value_t)0); |
| 1263 | |
| 1264 | |
| 1265 | assert(ds->ds_leg)((void) sizeof ((ds->ds_leg) ? 1 : 0), __extension__ ({ if (ds->ds_leg) ; else __assert_fail ("ds->ds_leg", "nua_session.c" , 1265, __extension__ __PRETTY_FUNCTION__); })); |
| 1266 | |
| 1267 | msg = nta_outgoing_getrequest(cr->cr_orq); |
| 1268 | sip = sip_object(msg); |
| 1269 | if (!msg) |
| 1270 | goto error; |
| 1271 | invite_branch = nta_outgoing_branch(cr->cr_orq); |
| 1272 | |
| 1273 | wa = sip_authorization(sip)((sip_authorization_t *)msg_header_access((msg_pub_t*)(sip), sip_authorization_class )); |
| 1274 | pa = sip_proxy_authorization(sip)((sip_proxy_authorization_t *)msg_header_access((msg_pub_t*)( sip), sip_proxy_authorization_class)); |
| 1275 | |
| 1276 | msg_destroy(msg); |
| 1277 | |
| 1278 | msg = nta_msg_create(nh->nh_nua->nua_nta, 0); |
| 1279 | sip = sip_object(msg); |
| 1280 | if (!msg) |
| 1281 | goto error; |
| 1282 | |
| 1283 | cseq = sip_cseq_create(msg_home(msg)((su_home_t*)(msg)), cr->cr_seq, SIP_METHOD_ACKsip_method_ack, "ACK"); |
| 1284 | |
| 1285 | if (!cseq) |
| 1286 | ; |
| 1287 | else if (nh->nh_tags && sip_add_tl(msg, sip, TAG_NEXT(nh->nh_tags)tag_next, (tag_value_t)(nh->nh_tags)) < 0) |
| 1288 | ; |
| 1289 | else if (tags && sip_add_tl(msg, sip, TAG_NEXT(tags)tag_next, (tag_value_t)(tags)) < 0) |
| 1290 | ; |
| 1291 | else if (wa && sip_add_dup(msg, sip, (sip_header_t *)wa) < 0) |
| 1292 | ; |
| 1293 | else if (pa && sip_add_dup(msg, sip, (sip_header_t *)pa) < 0) |
| 1294 | ; |
| 1295 | else if (sip_header_insert(msg, sip, (sip_header_t *)cseq) < 0) |
| 1296 | ; |
| 1297 | else if (nta_msg_request_complete(msg, ds->ds_leg, SIP_METHOD_ACKsip_method_ack, "ACK", NULL((void*)0)) < 0) |
| 1298 | ; |
| 1299 | else { |
| 1300 | /* Remove extra headers */ |
| 1301 | while (sip->sip_allow) |
| 1302 | sip_header_remove(msg, sip, (sip_header_t*)sip->sip_allow); |
| 1303 | while (sip->sip_priority) |
| 1304 | sip_header_remove(msg, sip, (sip_header_t*)sip->sip_priority); |
| 1305 | while (sip->sip_proxy_require) |
| 1306 | sip_header_remove(msg, sip, (sip_header_t*)sip->sip_proxy_require); |
| 1307 | while (sip->sip_require) |
| 1308 | sip_header_remove(msg, sip, (sip_header_t*)sip->sip_require); |
| 1309 | while (sip->sip_subject) |
| 1310 | sip_header_remove(msg, sip, (sip_header_t*)sip->sip_subject); |
| 1311 | while (sip->sip_supported) |
| 1312 | sip_header_remove(msg, sip, (sip_header_t*)sip->sip_supported); |
| 1313 | |
| 1314 | if (ss == NULL((void*)0) || ss->ss_state > nua_callstate_ready || pl_s) |
| 1315 | ; |
| 1316 | else if (cr->cr_offer_recv && !cr->cr_answer_sent) { |
| 1317 | if (nh->nh_soa == NULL((void*)0)) { |
| 1318 | if (session_get_description(sip, NULL((void*)0), NULL((void*)0))) |
| 1319 | cr->cr_answer_sent = 1, ss->ss_oa_sent = Answer; |
| 1320 | } |
| 1321 | else if (soa_generate_answer(nh->nh_soa, NULL((void*)0)) < 0 || |
| 1322 | session_include_description(nh->nh_soa, 1, msg, sip) < 0) { |
| 1323 | status = 900, phrase = "Internal media error"; |
| 1324 | reason = "SIP;cause=500;text=\"Internal media error\""; |
| 1325 | /* reason = soa_error_as_sip_reason(nh->nh_soa); */ |
| 1326 | } |
| 1327 | else { |
| 1328 | cr->cr_answer_sent = 1, ss->ss_oa_sent = Answer; |
| 1329 | } |
| 1330 | } |
| 1331 | |
| 1332 | if (ss == NULL((void*)0) || ss->ss_state > nua_callstate_ready || reason) |
| 1333 | ; |
| 1334 | else if (nh->nh_soa && soa_is_complete(nh->nh_soa)) { |
| 1335 | /* signal SOA that O/A round(s) is (are) complete */ |
| 1336 | if (soa_activate(nh->nh_soa, NULL((void*)0)) >= 0) { |
| 1337 | ss->ss_sdp_version = soa_get_user_version(nh->nh_soa); |
| 1338 | } |
| 1339 | } |
| 1340 | else if (nh->nh_soa == NULL((void*)0) |
| 1341 | /* NUA does not necessarily know dirty details */ |
| 1342 | /* && !(cr->cr_offer_sent && !cr->cr_answer_recv) */) { |
| 1343 | ; |
| 1344 | } |
| 1345 | else { |
| 1346 | nua_client_request_t *cru; |
| 1347 | |
| 1348 | /* Final response to UPDATE or PRACK may be on its way ... */ |
| 1349 | for (cru = ds->ds_cr; cru; cru = cru->cr_next) { |
| 1350 | if (cr != cru && cru->cr_offer_sent && !cru->cr_answer_recv) |
| 1351 | break; |
| 1352 | } |
| 1353 | |
| 1354 | if (cru == NULL((void*)0)) { |
| 1355 | /* No SDP answer -> terminate call */ |
| 1356 | status = 988, phrase = "Incomplete offer/answer"; |
| 1357 | reason = "SIP;cause=488;text=\"Incomplete offer/answer\""; |
| 1358 | } |
| 1359 | } |
| 1360 | |
| 1361 | proxy_is_set = NH_PISSET(nh, proxy)((((nh)->nh_prefs)->nhp_set_.set_bits.nhb_proxy) && (nh)->nh_nua->nua_handles->nh_prefs != (nh)->nh_prefs ); |
| 1362 | proxy = NH_PGET(nh, proxy)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_proxy ? ((nh)-> nh_prefs)->nhp_proxy : ((nh)->nh_nua->nua_handles-> nh_prefs)->nhp_proxy); |
| 1363 | |
| 1364 | if ((ack = nta_outgoing_mcreate(nh->nh_nua->nua_nta, NULL((void*)0), NULL((void*)0), NULL((void*)0), |
| 1365 | msg, |
| 1366 | NTATAG_ACK_BRANCH(invite_branch)ntatag_ack_branch, tag_str_v((invite_branch)), |
| 1367 | TAG_IF(proxy_is_set,!(proxy_is_set) ? tag_skip : ntatag_default_proxy, urltag_url_v ((proxy)) |
| 1368 | NTATAG_DEFAULT_PROXY(proxy))!(proxy_is_set) ? tag_skip : ntatag_default_proxy, urltag_url_v ((proxy)), |
| 1369 | SIPTAG_END()siptag_end, (tag_value_t)0, |
| 1370 | TAG_NEXT(tags)tag_next, (tag_value_t)(tags)))) { |
| 1371 | /* TR engine keeps this around for T2 so it catches all 2XX retransmissions */ |
| 1372 | nta_outgoing_destroy(ack); |
| 1373 | |
| 1374 | if (nh->nh_soa && reason && ss && ss->ss_state <= nua_callstate_ready) |
| 1375 | nua_stack_event(nh->nh_nua, nh, NULL((void*)0), |
| 1376 | nua_i_media_error, status, phrase, |
| 1377 | NULL((void*)0)); |
| 1378 | } |
| 1379 | else if (!reason) { |
| 1380 | status = 900, phrase = "Cannot send ACK"; |
| 1381 | reason = "SIP;cause=500;text=\"Internal Error\""; |
| 1382 | } |
| 1383 | |
| 1384 | if (ss && reason) |
| 1385 | ss->ss_reason = reason; |
| 1386 | |
| 1387 | if (status < 300) |
| 1388 | error = 1; |
| 1389 | else |
| 1390 | error = -2; |
| 1391 | } |
| 1392 | |
| 1393 | if (error == -1) |
| 1394 | msg_destroy(msg); |
| 1395 | |
| 1396 | error: |
| 1397 | cr->cr_acked = 1; /* ... or we have at least tried */ |
| 1398 | |
| 1399 | nua_client_request_remove(cr); |
| 1400 | nua_client_request_clean(cr); |
| 1401 | |
| 1402 | return error; |
| 1403 | } |
| 1404 | |
| 1405 | static int |
| 1406 | nua_invite_client_should_ack(nua_client_request_t const *cr) |
| 1407 | { |
| 1408 | return |
| 1409 | cr && cr->cr_orq && !cr->cr_acked && |
| 1410 | 200 <= cr->cr_status && cr->cr_status < 300; |
| 1411 | } |
| 1412 | |
| 1413 | /** Complete client request */ |
| 1414 | static int nua_invite_client_complete(nua_client_request_t *cr) |
| 1415 | { |
| 1416 | if (cr->cr_orq == NULL((void*)0)) |
| 1417 | /* Xyzzy */; |
| 1418 | else if (cr->cr_status < 200) |
| 1419 | nta_outgoing_cancel(cr->cr_orq); |
| 1420 | else if (cr->cr_status < 300 && !cr->cr_acked) |
| 1421 | nua_invite_client_ack(cr, NULL((void*)0)); |
| 1422 | |
| 1423 | return 0; |
| 1424 | } |
| 1425 | |
| 1426 | /**@fn void nua_cancel(nua_handle_t *nh, tag_type_t tag, tag_value_t value, ...); |
| 1427 | * |
| 1428 | * Cancel an INVITE operation |
| 1429 | * |
| 1430 | * @param nh Pointer to operation handle |
| 1431 | * @param tag, value, ... List of tagged parameters |
| 1432 | * |
| 1433 | * @return |
| 1434 | * nothing |
| 1435 | * |
| 1436 | * @par Related Tags: |
| 1437 | * Header tags defined in <sofia-sip/sip_tag.h> |
| 1438 | * |
| 1439 | * @par Events: |
| 1440 | * #nua_r_cancel, #nua_i_state (#nua_i_active, #nua_i_terminated) |
| 1441 | * |
| 1442 | * @sa @ref nua_call_model, nua_invite(), #nua_i_cancel |
| 1443 | */ |
| 1444 | |
| 1445 | static int nua_cancel_client_request(nua_client_request_t *cr, |
| 1446 | msg_t *msg, sip_t *sip, |
| 1447 | tagi_t const *tags); |
| 1448 | static int nua_cancel_client_check_restart(nua_client_request_t *cr, |
| 1449 | int status, |
| 1450 | char const *phrase, |
| 1451 | sip_t const *sip); |
| 1452 | |
| 1453 | nua_client_methods_t const nua_cancel_client_methods = { |
| 1454 | SIP_METHOD_CANCELsip_method_cancel, "CANCEL", /* crm_method, crm_method_name */ |
| 1455 | 0, /* crm_extra */ |
| 1456 | { /* crm_flags */ |
| 1457 | /* create_dialog */ 0, |
| 1458 | /* in_dialog */ 1, |
| 1459 | /* target refresh */ 0 |
| 1460 | }, |
| 1461 | NULL((void*)0), /* crm_template */ |
| 1462 | NULL((void*)0), /* crm_init */ |
| 1463 | nua_cancel_client_request, /* .. not really crm_send */ |
| 1464 | nua_cancel_client_check_restart, /* crm_check_restart */ |
| 1465 | NULL((void*)0), /* crm_recv */ |
| 1466 | NULL((void*)0), /* crm_preliminary */ |
| 1467 | NULL((void*)0), /* crm_report */ |
| 1468 | NULL((void*)0), /* crm_complete */ |
| 1469 | }; |
| 1470 | |
| 1471 | int nua_stack_cancel(nua_t *nua, nua_handle_t *nh, nua_event_t e, |
| 1472 | tagi_t const *tags) |
| 1473 | { |
| 1474 | return nua_client_create(nh, e, &nua_cancel_client_methods, tags); |
| 1475 | } |
| 1476 | |
| 1477 | static int nua_cancel_client_request(nua_client_request_t *cr, |
| 1478 | msg_t *msg, sip_t *sip, |
| 1479 | tagi_t const *tags) |
| 1480 | { |
| 1481 | nua_handle_t *nh = cr->cr_owner; |
| 1482 | nua_dialog_usage_t *du = nua_dialog_usage_for_session(nh->nh_ds); |
| 1483 | |
| 1484 | if (!du || !du->du_cr || !du->du_cr->cr_orq || |
| 1485 | nta_outgoing_status(du->du_cr->cr_orq) >= 200) { |
| 1486 | return nua_client_return(cr, 481, "No transaction to CANCEL", msg); |
| 1487 | } |
| 1488 | |
| 1489 | assert(cr->cr_orq == NULL)((void) sizeof ((cr->cr_orq == ((void*)0)) ? 1 : 0), __extension__ ({ if (cr->cr_orq == ((void*)0)) ; else __assert_fail ("cr->cr_orq == NULL" , "nua_session.c", 1489, __extension__ __PRETTY_FUNCTION__); } )); |
| 1490 | |
| 1491 | cr->cr_orq = nta_outgoing_tcancel(du->du_cr->cr_orq, |
| 1492 | nua_client_orq_response, |
| 1493 | nua_client_request_ref(cr), |
| 1494 | TAG_NEXT(tags)tag_next, (tag_value_t)(tags)); |
| 1495 | |
| 1496 | if (cr->cr_orq == NULL((void*)0)) { |
| 1497 | nua_client_request_unref(cr); |
| 1498 | return -1; |
| 1499 | } |
| 1500 | |
| 1501 | return 0; |
| 1502 | } |
| 1503 | |
| 1504 | static int |
| 1505 | nua_cancel_client_check_restart(nua_client_request_t *cr, |
| 1506 | int status, |
| 1507 | char const *phrase, |
| 1508 | sip_t const *sip) |
| 1509 | { |
| 1510 | /* We cannot really restart CANCEL */ |
| 1511 | return 0; |
| 1512 | } |
| 1513 | |
| 1514 | /** @NUA_EVENT nua_r_cancel |
| 1515 | * |
| 1516 | * Answer to outgoing CANCEL. |
| 1517 | * |
| 1518 | * The CANCEL may be sent explicitly by nua_cancel() or implicitly by NUA |
| 1519 | * state machine. |
| 1520 | * |
| 1521 | * @param status response status code |
| 1522 | * @param phrase a short textual description of @a status code |
| 1523 | * @param nh operation handle associated with the call |
| 1524 | * @param hmagic application context associated with the call |
| 1525 | * @param sip response to CANCEL request or NULL upon an error |
| 1526 | * (status code is in @a status and |
| 1527 | * descriptive message in @a phrase parameters) |
| 1528 | * @param tags empty |
| 1529 | * |
| 1530 | * @sa nua_cancel(), @ref nua_uac_call_model, #nua_r_invite, nua_invite(), |
| 1531 | * #nua_i_state |
| 1532 | * |
| 1533 | * @END_NUA_EVENT |
| 1534 | */ |
| 1535 | |
| 1536 | static void nua_session_usage_refresh(nua_handle_t *nh, |
| 1537 | nua_dialog_state_t *ds, |
| 1538 | nua_dialog_usage_t *du, |
| 1539 | sip_time_t now) |
| 1540 | { |
| 1541 | nua_session_usage_t *ss = NUA_DIALOG_USAGE_PRIVATE(du)((void *)((du) + 1)); |
| 1542 | nua_client_request_t const *cr = du->du_cr; |
| 1543 | nua_server_request_t const *sr; |
| 1544 | |
| 1545 | if (ss->ss_state >= nua_callstate_terminating || |
| 1546 | /* INVITE is in progress or being authenticated */ |
| 1547 | nua_client_request_in_progress(cr)) |
| 1548 | return; |
| 1549 | |
| 1550 | if (ds->ds_cr) return; /* request queued */ |
| 1551 | |
| 1552 | /* UPDATE has been queued */ |
| 1553 | //for (cr = ds->ds_cr; cr; cr = cr->cr_next) |
| 1554 | //if (cr->cr_method == sip_method_update) |
| 1555 | // return; |
| 1556 | |
| 1557 | /* INVITE or UPDATE in progress on server side */ |
| 1558 | for (sr = ds->ds_sr; sr; sr = sr->sr_next) |
| 1559 | if (sr->sr_usage == du && |
| 1560 | (sr->sr_method == sip_method_invite || |
| 1561 | sr->sr_method == sip_method_update)) |
| 1562 | return; |
| 1563 | |
| 1564 | if (ss->ss_timer->refresher == nua_remote_refresher) { |
| 1565 | SU_DEBUG_3(("nua(%p): session almost expired, sending BYE before timeout.\n", (void *)nh))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 1565, "nua(%p): session almost expired, sending BYE before timeout.\n" , (void *)nh)) : (void)0); |
| 1566 | ss->ss_reason = "SIP;cause=408;text=\"Session timeout\""; |
| 1567 | nua_stack_bye(nh->nh_nua, nh, nua_r_bye, NULL((void*)0)); |
| 1568 | return; |
| 1569 | } |
| 1570 | else if (NH_PGET(nh, update_refresh)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_update_refresh ? ((nh)->nh_prefs)->nhp_update_refresh : ((nh)->nh_nua ->nua_handles->nh_prefs)->nhp_update_refresh)) { |
| 1571 | nua_stack_update(nh->nh_nua, nh, nua_r_update, NULL((void*)0)); |
| 1572 | } |
| 1573 | else if (du->du_cr) { |
| 1574 | nua_client_resend_request(du->du_cr, 0); |
| 1575 | } |
| 1576 | else { |
| 1577 | nua_stack_invite(nh->nh_nua, nh, nua_r_invite, NULL((void*)0)); |
| 1578 | } |
| 1579 | } |
| 1580 | |
| 1581 | /** @interal Shut down session usage. |
| 1582 | * |
| 1583 | * @retval >0 shutdown done |
| 1584 | * @retval 0 shutdown in progress |
| 1585 | * @retval <0 try again later |
| 1586 | */ |
| 1587 | static int nua_session_usage_shutdown(nua_handle_t *nh, |
| 1588 | nua_dialog_state_t *ds, |
| 1589 | nua_dialog_usage_t *du) |
| 1590 | { |
| 1591 | nua_session_usage_t *ss = NUA_DIALOG_USAGE_PRIVATE(du)((void *)((du) + 1)); |
| 1592 | nua_server_request_t *sr, *sr_next; |
| 1593 | nua_client_request_t *cri; |
| 1594 | |
| 1595 | assert(ss == nua_session_usage_for_dialog(nh->nh_ds))((void) sizeof ((ss == nua_session_usage_for_dialog(nh->nh_ds )) ? 1 : 0), __extension__ ({ if (ss == nua_session_usage_for_dialog (nh->nh_ds)) ; else __assert_fail ("ss == nua_session_usage_for_dialog(nh->nh_ds)" , "nua_session.c", 1595, __extension__ __PRETTY_FUNCTION__); } )); |
| 1596 | |
| 1597 | /* Zap server-side transactions */ |
| 1598 | for (sr = ds->ds_sr; sr; sr = sr_next) { |
| 1599 | sr_next = sr->sr_next; |
| 1600 | if (sr->sr_usage == du) { |
| 1601 | assert(sr->sr_usage == du)((void) sizeof ((sr->sr_usage == du) ? 1 : 0), __extension__ ({ if (sr->sr_usage == du) ; else __assert_fail ("sr->sr_usage == du" , "nua_session.c", 1601, __extension__ __PRETTY_FUNCTION__); } )); |
| 1602 | sr->sr_usage = NULL((void*)0); |
| 1603 | |
| 1604 | if (nua_server_request_is_pending(sr)) { |
| 1605 | SR_STATUS1(sr, SIP_480_TEMPORARILY_UNAVAILABLE)sr_status(sr, 480, sip_480_Temporarily_unavailable); |
| 1606 | nua_server_respond(sr, NULL((void*)0)); |
| 1607 | if (nua_server_report(sr) >= 2) |
| 1608 | return 480; |
| 1609 | } |
| 1610 | else |
| 1611 | nua_server_request_destroy(sr); |
| 1612 | } |
| 1613 | } |
| 1614 | |
| 1615 | cri = du->du_cr; |
| 1616 | |
| 1617 | switch (ss->ss_state) { |
| 1618 | case nua_callstate_calling: |
| 1619 | case nua_callstate_proceeding: |
| 1620 | return nua_client_create(nh, nua_r_cancel, &nua_cancel_client_methods, NULL((void*)0)); |
| 1621 | |
| 1622 | case nua_callstate_completing: |
| 1623 | case nua_callstate_completed: |
| 1624 | case nua_callstate_ready: |
| 1625 | if (cri && cri->cr_orq) { |
| 1626 | if (cri->cr_status < 200) { |
| 1627 | nua_client_create(nh, nua_r_cancel, &nua_cancel_client_methods, NULL((void*)0)); |
| 1628 | } |
| 1629 | else if (cri->cr_status < 300 && !cri->cr_acked) { |
| 1630 | nua_invite_client_ack(cri, NULL((void*)0)); |
| 1631 | } |
| 1632 | } |
| 1633 | if (nua_client_create(nh, nua_r_bye, &nua_bye_client_methods, NULL((void*)0)) != 0) |
| 1634 | break; |
| 1635 | |
| 1636 | signal_call_state_change(nh, ss, 487, "BYE sent", |
| 1637 | nua_callstate_terminating); |
| 1638 | return 0; |
| 1639 | |
| 1640 | case nua_callstate_terminating: |
| 1641 | case nua_callstate_terminated: /* XXX */ |
| 1642 | return 0; |
| 1643 | |
| 1644 | default: |
| 1645 | break; |
| 1646 | } |
| 1647 | |
| 1648 | nua_dialog_usage_remove(nh, ds, du, NULL((void*)0), NULL((void*)0)); |
| 1649 | |
| 1650 | return 200; |
| 1651 | } |
| 1652 | |
| 1653 | /**@fn void nua_prack(nua_handle_t *nh, tag_type_t tag, tag_value_t value, ...); |
| 1654 | * Send a PRACK request. |
| 1655 | * |
| 1656 | * PRACK is used to acknowledge receipt of 100rel responses. See @RFC3262. |
| 1657 | * |
| 1658 | * @param nh Pointer to operation handle |
| 1659 | * @param tag, value, ... List of tagged parameters |
| 1660 | * |
| 1661 | * @return |
| 1662 | * nothing |
| 1663 | * |
| 1664 | * @par Related Tags: |
| 1665 | * Tags in <sofia-sip/soa_tag.h>, <sofia-sip/sip_tag.h>. |
| 1666 | * |
| 1667 | * @par Events: |
| 1668 | * #nua_r_prack |
| 1669 | */ |
| 1670 | |
| 1671 | /** @NUA_EVENT nua_r_prack |
| 1672 | * |
| 1673 | * Response to an outgoing @b PRACK request. PRACK request is used to |
| 1674 | * acknowledge reliable preliminary responses and it is usually sent |
| 1675 | * automatically by the nua stack. |
| 1676 | * |
| 1677 | * @param status response status code |
| 1678 | * (if the request is retried, @a status is 100, the @a |
| 1679 | * sip->sip_status->st_status contain the real status code |
| 1680 | * from the response message, e.g., 302, 401, or 407) |
| 1681 | * @param phrase a short textual description of @a status code |
| 1682 | * @param nh operation handle associated with the call |
| 1683 | * @param hmagic application context associated with the call |
| 1684 | * @param sip response to @b PRACK or NULL upon an error |
| 1685 | * (status code is in @a status and |
| 1686 | * descriptive message in @a phrase parameters) |
| 1687 | * @param tags empty |
| 1688 | * |
| 1689 | * @sa nua_prack(), #nua_i_prack, @RFC3262 |
| 1690 | * |
| 1691 | * @END_NUA_EVENT |
| 1692 | */ |
| 1693 | |
| 1694 | static int nua_prack_client_init(nua_client_request_t *cr, |
| 1695 | msg_t *msg, sip_t *sip, |
| 1696 | tagi_t const *tags); |
| 1697 | static int nua_prack_client_request(nua_client_request_t *cr, |
| 1698 | msg_t *msg, sip_t *sip, |
| 1699 | tagi_t const *tags); |
| 1700 | static int nua_prack_client_response(nua_client_request_t *cr, |
| 1701 | int status, char const *phrase, |
| 1702 | sip_t const *sip); |
| 1703 | static int nua_prack_client_report(nua_client_request_t *cr, |
| 1704 | int status, char const *phrase, |
| 1705 | sip_t const *sip, |
| 1706 | nta_outgoing_t *orq, |
| 1707 | tagi_t const *tags); |
| 1708 | |
| 1709 | nua_client_methods_t const nua_prack_client_methods = { |
| 1710 | SIP_METHOD_PRACKsip_method_prack, "PRACK", /* crm_method, crm_method_name */ |
| 1711 | 0, /* crm_extra */ |
| 1712 | { /* crm_flags */ |
| 1713 | /* create_dialog */ 0, |
| 1714 | /* in_dialog */ 1, |
| 1715 | /* target refresh */ 0 |
| 1716 | }, |
| 1717 | NULL((void*)0), /* crm_template */ |
| 1718 | nua_prack_client_init, /* crm_init */ |
| 1719 | nua_prack_client_request, /* crm_send */ |
| 1720 | NULL((void*)0), /* crm_check_restart */ |
| 1721 | nua_prack_client_response, /* crm_recv */ |
| 1722 | NULL((void*)0), /* crm_preliminary */ |
| 1723 | nua_prack_client_report, /* crm_report */ |
| 1724 | NULL((void*)0), /* crm_complete */ |
| 1725 | }; |
| 1726 | |
| 1727 | int nua_stack_prack(nua_t *nua, nua_handle_t *nh, nua_event_t e, |
| 1728 | tagi_t const *tags) |
| 1729 | { |
| 1730 | return nua_client_create(nh, e, &nua_prack_client_methods, tags); |
| 1731 | } |
| 1732 | |
| 1733 | static int nua_prack_client_init(nua_client_request_t *cr, |
| 1734 | msg_t *msg, sip_t *sip, |
| 1735 | tagi_t const *tags) |
| 1736 | { |
| 1737 | nua_handle_t *nh = cr->cr_owner; |
| 1738 | nua_dialog_usage_t *du = nua_dialog_usage_for_session(nh->nh_ds); |
| 1739 | |
| 1740 | cr->cr_usage = du; |
| 1741 | |
| 1742 | return 0; |
| 1743 | } |
| 1744 | |
| 1745 | static int nua_prack_client_request(nua_client_request_t *cr, |
| 1746 | msg_t *msg, sip_t *sip, |
| 1747 | tagi_t const *tags) |
| 1748 | { |
| 1749 | nua_handle_t *nh = cr->cr_owner; |
| 1750 | nua_dialog_usage_t *du = cr->cr_usage; |
| 1751 | nua_session_usage_t *ss; |
| 1752 | nua_client_request_t *cri; |
| 1753 | int offer_sent = 0, answer_sent = 0, retval; |
| 1754 | int status = 0; char const *phrase = "PRACK Sent"; |
| 1755 | //uint32_t rseq = 0; |
| 1756 | |
| 1757 | if (du == NULL((void*)0)) /* Call terminated */ |
| 1758 | return nua_client_return(cr, SIP_481_NO_TRANSACTION481, sip_481_No_transaction, msg); |
| 1759 | |
| 1760 | ss = NUA_DIALOG_USAGE_PRIVATE(du)((void *)((du) + 1)); |
| 1761 | if (ss->ss_state >= nua_callstate_terminating) |
| 1762 | return nua_client_return(cr, 900, "Session is terminating", msg); |
| 1763 | |
| 1764 | cri = du->du_cr; |
| 1765 | |
| 1766 | // if (sip->sip_rack) |
| 1767 | // rseq = sip->sip_rack->ra_response; |
| 1768 | |
| 1769 | if (cri->cr_offer_recv && !cri->cr_answer_sent) { |
| 1770 | if (nh->nh_soa == NULL((void*)0)) |
| 1771 | /* It is up to application to handle SDP */ |
| 1772 | answer_sent = session_get_description(sip, NULL((void*)0), NULL((void*)0)); |
| 1773 | else if (sip->sip_payload) |
| 1774 | /* XXX - we should just do MIME in session_include_description() */; |
| 1775 | else if (soa_generate_answer(nh->nh_soa, NULL((void*)0)) < 0 || |
| 1776 | session_include_description(nh->nh_soa, 1, msg, sip) < 0) { |
| 1777 | status = soa_error_as_sip_response(nh->nh_soa, &phrase); |
| 1778 | SU_DEBUG_3(("nua(%p): local response to PRACK: %d %s\n",((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 1779, "nua(%p): local response to PRACK: %d %s\n" , (void *)nh, status, phrase)) : (void)0) |
| 1779 | (void *)nh, status, phrase))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 1779, "nua(%p): local response to PRACK: %d %s\n" , (void *)nh, status, phrase)) : (void)0); |
| 1780 | nua_stack_event(nh->nh_nua, nh, NULL((void*)0), |
| 1781 | nua_i_media_error, status, phrase, |
| 1782 | NULL((void*)0)); |
| 1783 | return nua_client_return(cr, status, phrase, msg); |
| 1784 | } |
| 1785 | else { |
| 1786 | answer_sent = 1; |
| 1787 | if (soa_activate(nh->nh_soa, NULL((void*)0)) >= 0) { |
| 1788 | ss->ss_sdp_version = soa_get_user_version(nh->nh_soa); |
| 1789 | } |
| 1790 | } |
| 1791 | } |
| 1792 | else if (nh->nh_soa == NULL((void*)0)) { |
| 1793 | offer_sent = session_get_description(sip, NULL((void*)0), NULL((void*)0)); |
| 1794 | } |
| 1795 | else { |
| 1796 | /* When 100rel response status was 183 do support for preconditions */ |
| 1797 | int send_offer = ss->ss_precondition && |
| 1798 | cri->cr_status == 183 && cri->cr_offer_sent && cri->cr_answer_recv; |
| 1799 | |
| 1800 | if (!send_offer) { |
| 1801 | tagi_t const *t = tl_find_last(tags, nutag_include_extra_sdp); |
| 1802 | send_offer = t && t->t_value; |
| 1803 | } |
| 1804 | |
| 1805 | if (!send_offer) { |
| 1806 | } |
| 1807 | else if (soa_generate_offer(nh->nh_soa, 0, NULL((void*)0)) >= 0 && |
| 1808 | session_include_description(nh->nh_soa, 1, msg, sip) >= 0) { |
| 1809 | offer_sent = 1; |
| 1810 | } |
| 1811 | else { |
| 1812 | status = soa_error_as_sip_response(nh->nh_soa, &phrase); |
| 1813 | SU_DEBUG_3(("nua(%p): PRACK offer: %d %s\n", (void *)nh,((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 1814, "nua(%p): PRACK offer: %d %s\n" , (void *)nh, status, phrase)) : (void)0) |
| 1814 | status, phrase))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 1814, "nua(%p): PRACK offer: %d %s\n" , (void *)nh, status, phrase)) : (void)0); |
| 1815 | nua_stack_event(nh->nh_nua, nh, NULL((void*)0), |
| 1816 | nua_i_media_error, status, phrase, NULL((void*)0)); |
| 1817 | return nua_client_return(cr, status, phrase, msg); |
| 1818 | } |
| 1819 | } |
| 1820 | |
| 1821 | retval = nua_base_client_request(cr, msg, sip, NULL((void*)0)); |
| 1822 | |
| 1823 | if (retval == 0) { |
| 1824 | cr->cr_offer_sent = offer_sent; |
| 1825 | cr->cr_answer_sent = answer_sent; |
| 1826 | |
| 1827 | if (offer_sent) |
| 1828 | ss->ss_oa_sent = Offer; |
| 1829 | else if (answer_sent) |
| 1830 | ss->ss_oa_sent = Answer; |
| 1831 | |
| 1832 | if (cr->cr_restarting) |
| 1833 | /* Restart logic calls nua_prack_client_report */; |
| 1834 | else if (!cr->cr_auto && (!offer_sent || !answer_sent)) |
| 1835 | /* Suppose application know it called nua_prack() */; |
| 1836 | else |
| 1837 | signal_call_state_change(nh, ss, status, phrase, ss->ss_state); |
| 1838 | } |
| 1839 | |
| 1840 | return retval; |
| 1841 | } |
| 1842 | |
| 1843 | static int nua_prack_client_response(nua_client_request_t *cr, |
| 1844 | int status, char const *phrase, |
| 1845 | sip_t const *sip) |
| 1846 | { |
| 1847 | /* XXX - fatal error cases? */ |
| 1848 | |
| 1849 | return nua_session_client_response(cr, status, phrase, sip); |
| 1850 | } |
| 1851 | |
| 1852 | static int nua_prack_client_report(nua_client_request_t *cr, |
| 1853 | int status, char const *phrase, |
| 1854 | sip_t const *sip, |
| 1855 | nta_outgoing_t *orq, |
| 1856 | tagi_t const *tags) |
| 1857 | { |
| 1858 | nua_handle_t *nh = cr->cr_owner; |
| 1859 | nua_dialog_usage_t *du = cr->cr_usage; |
| 1860 | nua_session_usage_t *ss = nua_dialog_usage_private(du)((du) ? (void*)((du) + 1) : ((void*)0)); |
| 1861 | int acked = 0; |
| 1862 | |
| 1863 | nua_stack_event(nh->nh_nua, nh, |
| 1864 | nta_outgoing_getresponse(orq), |
| 1865 | (enum nua_event_e)cr->cr_event, |
| 1866 | status, phrase, |
| 1867 | tags); |
| 1868 | |
| 1869 | if (!ss || cr->cr_terminated || cr->cr_graceful || cr->cr_waiting) |
| 1870 | return 1; |
| 1871 | |
| 1872 | if (cr->cr_offer_sent || cr->cr_answer_sent) { |
| 1873 | unsigned next_state = ss->ss_state; |
| 1874 | |
| 1875 | if (status < 200) |
| 1876 | ; |
| 1877 | else if (nua_invite_client_should_ack(du->du_cr)) { |
| 1878 | /* There is an un-ACK-ed INVITE there */ |
| 1879 | assert(du->du_cr->cr_method == sip_method_invite)((void) sizeof ((du->du_cr->cr_method == sip_method_invite ) ? 1 : 0), __extension__ ({ if (du->du_cr->cr_method == sip_method_invite) ; else __assert_fail ("du->du_cr->cr_method == sip_method_invite" , "nua_session.c", 1879, __extension__ __PRETTY_FUNCTION__); } )); |
| 1880 | if (NH_PGET(nh, auto_ack)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_auto_ack ? ((nh )->nh_prefs)->nhp_auto_ack : ((nh)->nh_nua->nua_handles ->nh_prefs)->nhp_auto_ack) || |
| 1881 | /* Auto-ACK response to re-INVITE when media is enabled |
| 1882 | and auto_ack is not set to 0 on handle */ |
| 1883 | (ss->ss_state == nua_callstate_ready && nh->nh_soa && |
| 1884 | !NH_PISSET(nh, auto_ack)((((nh)->nh_prefs)->nhp_set_.set_bits.nhb_auto_ack) && (nh)->nh_nua->nua_handles->nh_prefs != (nh)->nh_prefs ))) { |
| 1885 | /* There should be no UPDATE with offer/answer |
| 1886 | if PRACK with offer/answer was ongoing! */ |
| 1887 | if (nua_invite_client_ack(du->du_cr, NULL((void*)0)) > 0) |
| 1888 | next_state = nua_callstate_ready; |
| 1889 | else |
| 1890 | next_state = nua_callstate_terminating; |
| 1891 | |
| 1892 | acked = 1; |
| 1893 | } |
| 1894 | } |
| 1895 | |
| 1896 | signal_call_state_change(nh, ss, status, phrase, (enum nua_callstate)next_state); |
| 1897 | } |
| 1898 | |
| 1899 | if (acked && |
| 1900 | nua_client_is_queued(du->du_cr) && |
| 1901 | du->du_cr->cr_method == sip_method_invite) { |
| 1902 | /* New INVITE was queued - do not send UPDATE */ |
| 1903 | } |
| 1904 | else if (ss->ss_update_needed && 200 <= status && status < 300 && |
| 1905 | !SIP_IS_ALLOWED(NH_PGET(nh, appl_method), sip_method_update)(sip_method_unknown < (sip_method_update) && (sip_method_update ) < 32 && ((((nh)->nh_prefs)->nhp_set_.set_bits .nhb_appl_method ? ((nh)->nh_prefs)->nhp_appl_method : ( (nh)->nh_nua->nua_handles->nh_prefs)->nhp_appl_method )) && (((((nh)->nh_prefs)->nhp_set_.set_bits.nhb_appl_method ? ((nh)->nh_prefs)->nhp_appl_method : ((nh)->nh_nua ->nua_handles->nh_prefs)->nhp_appl_method))->k_bitmap & (1 << (sip_method_update))) != 0)) |
| 1906 | nua_client_create(nh, nua_r_update, &nua_update_client_methods, NULL((void*)0)); |
| 1907 | |
| 1908 | return 1; |
| 1909 | } |
| 1910 | |
| 1911 | /* ---------------------------------------------------------------------- */ |
| 1912 | /* UAS side of INVITE */ |
| 1913 | |
| 1914 | /** @NUA_EVENT nua_i_invite |
| 1915 | * |
| 1916 | * Indication of incoming call or re-INVITE request. |
| 1917 | * |
| 1918 | * @param status statuscode of response sent automatically by stack |
| 1919 | * @param phrase a short textual description of @a status code |
| 1920 | * @param nh operation handle associated with this call |
| 1921 | * (maybe created for this call) |
| 1922 | * @param hmagic application context associated with this call |
| 1923 | * (maybe NULL if call handle was created for this call) |
| 1924 | * @param sip incoming INVITE request |
| 1925 | * @param tags SOATAG_ACTIVE_AUDIO(), SOATAG_ACTIVE_VIDEO() |
| 1926 | * |
| 1927 | * @par |
| 1928 | * @par Responding to INVITE with nua_respond() |
| 1929 | * |
| 1930 | * If @a status in #nua_i_invite event is below 200, the application should |
| 1931 | * accept or reject the call with nua_respond(). See the @ref nua_call_model |
| 1932 | * for the detailed explanation of various options in call processing at |
| 1933 | * server end. |
| 1934 | * |
| 1935 | * The @b INVITE request takes care of session setup using SDP Offer-Answer |
| 1936 | * negotiation as specified in @RFC3264 (updated in @RFC3262 section 5, |
| 1937 | * @RFC3311, and @RFC3312). The Offer-Answer can be taken care by |
| 1938 | * application (if NUTAG_MEDIA_ENABLE(0) parameter has been set) or by the |
| 1939 | * built-in SDP Offer/Answer engine @soa (by default and when |
| 1940 | * NUTAG_MEDIA_ENABLE(1) parameter has been set). When @soa is enabled, it |
| 1941 | * will take care of parsing the SDP, negotiating the media and codecs, and |
| 1942 | * including the SDP in the SIP message bodies as required by the |
| 1943 | * Offer-Answer model. |
| 1944 | * |
| 1945 | * When @soa is enabled, the SDP in the incoming INVITE is parsed and feed |
| 1946 | * to a #soa_session_t object. The #nua_i_state event sent to the |
| 1947 | * application immediately after #nua_i_invite will contain the parsing |
| 1948 | * results in SOATAG_REMOTE_SDP() and SOATAG_REMOTE_SDP_STR() tags. |
| 1949 | * |
| 1950 | * Note that currently the parser within @nua does not handle MIME |
| 1951 | * multipart. The SDP Offer/Answer engine can get confused if the SDP offer |
| 1952 | * is included in a MIME multipart, therefore such an @b INVITE is rejected |
| 1953 | * with <i>415 Unsupported Media Type</i> error response: the client is |
| 1954 | * expected to retry the INVITE without MIME multipart content. |
| 1955 | * |
| 1956 | * If the call is to be accepted, the application should include the SDP in |
| 1957 | * the 2XX response. If @soa is not disabled with NUTAG_MEDIA_ENABLE(0), the |
| 1958 | * SDP should be included in the SOATAG_USER_SDP() or SOATAG_USER_SDP_STR() |
| 1959 | * parameter given to nua_respond(). If it is disabled, the SDP should be |
| 1960 | * included in the response message using SIPTAG_PAYLOAD() or |
| 1961 | * SIPTAG_PAYLOAD_STR(). Also, the @ContentType should be set using |
| 1962 | * SIPTAG_CONTENT_TYPE() or SIPTAG_CONTENT_TYPE_STR(). |
| 1963 | * |
| 1964 | * @par Preliminary Responses and 100rel |
| 1965 | * |
| 1966 | * Call progress can be signaled with preliminary responses (with status |
| 1967 | * code in the range 101..199). It is possible to conclude the SDP |
| 1968 | * Offer-Answer negotiation using preliminary responses, too. If |
| 1969 | * NUTAG_EARLY_ANSWER(1), SOATAG_USER_SDP() or SOATAG_USER_SDP_STR() |
| 1970 | * parameter is included with in a preliminary nua_response(), the SDP |
| 1971 | * answer is generated and sent with the preliminary responses, too. |
| 1972 | * |
| 1973 | * The preliminary responses are sent reliably if feature tag "100rel" is |
| 1974 | * included in the @Require header of the response or if |
| 1975 | * NUTAG_EARLY_MEDIA(1) parameter has been given. The reliably delivery of |
| 1976 | * preliminary responses mean that a sequence number is included in the |
| 1977 | * @RSeq header in the response message and the response message is resent |
| 1978 | * until the client responds with a @b PRACK request with matching sequence |
| 1979 | * number in @RAck header. |
| 1980 | * |
| 1981 | * Note that only the "183" response is sent reliably if the |
| 1982 | * NUTAG_ONLY183_100REL(1) parameter has been given. The reliable |
| 1983 | * preliminary responses are acknowledged with @b PRACK request sent by the |
| 1984 | * client. |
| 1985 | * |
| 1986 | * Note if the SDP offer-answer is completed with the reliable preliminary |
| 1987 | * responses, the is no need to include SDP in 200 OK response (or other 2XX |
| 1988 | * response). However, it the tag NUTAG_INCLUDE_EXTRA_SDP(1) is included |
| 1989 | * with nua_respond(), a copy of the SDP answer generated earlier by @soa is |
| 1990 | * included as the message body. |
| 1991 | * |
| 1992 | * @sa nua_respond(), @ref nua_uas_call_model, #nua_i_state, |
| 1993 | * NUTAG_MEDIA_ENABLE(), SOATAG_USER_SDP(), SOATAG_USER_SDP_STR(), |
| 1994 | * @RFC3262, NUTAG_EARLY_ANSWER(), NUTAG_EARLY_MEDIA(), |
| 1995 | * NUTAG_ONLY183_100REL(), |
| 1996 | * NUTAG_INCLUDE_EXTRA_SDP(), |
| 1997 | * #nua_i_prack, #nua_i_update, nua_update(), |
| 1998 | * nua_invite(), #nua_r_invite |
| 1999 | * |
| 2000 | * @par |
| 2001 | * @par Third Party Call Control |
| 2002 | * |
| 2003 | * When so called 2rd party call control is used, the initial @b INVITE may |
| 2004 | * not contain SDP offer. In that case, the offer is sent by the recipient |
| 2005 | * of the @b INVITE request (User-Agent Server, UAS). The SDP sent in 2XX |
| 2006 | * response (or in a preliminary reliable response) is considered as an |
| 2007 | * offer, and the answer will be included in the @b ACK request sent by the |
| 2008 | * UAC (or @b PRACK in case of preliminary reliable response). |
| 2009 | * |
| 2010 | * @sa @ref nua_3pcc_call_model |
| 2011 | * |
| 2012 | * @END_NUA_EVENT |
| 2013 | */ |
| 2014 | |
| 2015 | static int nua_invite_server_init(nua_server_request_t *sr); |
| 2016 | static int nua_session_server_init(nua_server_request_t *sr); |
| 2017 | static int nua_invite_server_preprocess(nua_server_request_t *sr); |
| 2018 | static int nua_invite_server_respond(nua_server_request_t *sr, tagi_t const *); |
| 2019 | static int nua_invite_server_is_100rel(nua_server_request_t *, tagi_t const *); |
| 2020 | static int nua_invite_server_report(nua_server_request_t *sr, tagi_t const *); |
| 2021 | |
| 2022 | static int |
| 2023 | process_ack_or_cancel(nua_server_request_t *, nta_incoming_t *, |
| 2024 | sip_t const *), |
| 2025 | process_ack(nua_server_request_t *, nta_incoming_t *, sip_t const *), |
| 2026 | process_ack_error(nua_server_request_t *sr, msg_t *ackmsg, |
| 2027 | int status, char const *phrase, char const *reason), |
| 2028 | process_cancel(nua_server_request_t *, nta_incoming_t *, sip_t const *), |
| 2029 | process_timeout(nua_server_request_t *, nta_incoming_t *), |
| 2030 | process_prack(nua_server_request_t *, |
| 2031 | nta_reliable_t *rel, |
| 2032 | nta_incoming_t *irq, |
| 2033 | sip_t const *sip); |
| 2034 | |
| 2035 | nua_server_methods_t const nua_invite_server_methods = |
| 2036 | { |
| 2037 | SIP_METHOD_INVITEsip_method_invite, "INVITE", |
| 2038 | nua_i_invite, /* Event */ |
| 2039 | { |
| 2040 | 1, /* Create dialog */ |
| 2041 | 0, /* Initial request */ |
| 2042 | 1, /* Target refresh request */ |
| 2043 | 1, /* Add Contact */ |
| 2044 | }, |
| 2045 | nua_invite_server_init, |
| 2046 | nua_invite_server_preprocess, |
| 2047 | nua_base_server_params((void*)0), |
| 2048 | nua_invite_server_respond, |
| 2049 | nua_invite_server_report, |
| 2050 | }; |
| 2051 | |
| 2052 | |
| 2053 | /** @internal Preprocess incoming invite - sure we have a valid request. |
| 2054 | * |
| 2055 | * @return 0 if request is valid, or error statuscode otherwise |
| 2056 | */ |
| 2057 | static int |
| 2058 | nua_invite_server_init(nua_server_request_t *sr) |
| 2059 | { |
| 2060 | nua_handle_t *nh = sr->sr_owner; |
| 2061 | nua_t *nua = nh->nh_nua; |
| 2062 | nua_session_usage_t *ss; |
| 2063 | |
| 2064 | sr->sr_neutral = 1; |
| 2065 | |
| 2066 | if (!NUA_PGET(nua, nh, invite_enable)(((nh) ? (nh)->nh_prefs : (nua)->nua_handles->nh_prefs )->nhp_set_.set_bits.nhb_invite_enable ? ((nh) ? (nh)-> nh_prefs : (nua)->nua_handles->nh_prefs)->nhp_invite_enable : ((nua)->nua_handles->nh_prefs)->nhp_invite_enable )) |
| 2067 | return SR_STATUS1(sr, SIP_403_FORBIDDEN)sr_status(sr, 403, sip_403_Forbidden); |
| 2068 | |
| 2069 | if (nua_session_server_init(sr)) |
| 2070 | return sr->sr_status; |
| 2071 | |
| 2072 | if (sr->sr_usage) { |
| 2073 | /* Existing session - check for overlap and glare */ |
| 2074 | |
| 2075 | nua_server_request_t const *sr0; |
| 2076 | nua_client_request_t const *cr; |
| 2077 | |
| 2078 | for (sr0 = nh->nh_ds->ds_sr; sr0; sr0 = sr0->sr_next) { |
| 2079 | /* Previous INVITE has not been ACKed */ |
| 2080 | if (sr0->sr_method == sip_method_invite) |
| 2081 | break; |
| 2082 | /* Or we have sent offer but have not received an answer */ |
| 2083 | if (sr->sr_sdp && sr0->sr_offer_sent && !sr0->sr_answer_recv) |
| 2084 | break; |
| 2085 | /* Or we have received request with offer but not sent an answer */ |
| 2086 | if (sr->sr_sdp && sr0->sr_offer_recv && !sr0->sr_answer_sent) |
| 2087 | break; |
| 2088 | } |
| 2089 | |
| 2090 | if (sr0) { |
| 2091 | /* Overlapping invites - RFC 3261 14.2 */ |
| 2092 | return nua_server_retry_after(sr, 500, "Overlapping Requests", 0, 10); |
| 2093 | } |
| 2094 | |
| 2095 | for (cr = nh->nh_ds->ds_cr; cr; cr = cr->cr_next) { |
| 2096 | if (cr->cr_usage == sr->sr_usage && cr->cr_orq && cr->cr_offer_sent) |
| 2097 | /* Glare - RFC 3261 14.2 and RFC 3311 section 5.2 */ |
| 2098 | return SR_STATUS1(sr, SIP_491_REQUEST_PENDING)sr_status(sr, 491, sip_491_Request_pending); |
| 2099 | } |
| 2100 | |
| 2101 | ss = nua_dialog_usage_private(sr->sr_usage)((sr->sr_usage) ? (void*)((sr->sr_usage) + 1) : ((void* )0)); |
| 2102 | |
| 2103 | if (ss->ss_state < nua_callstate_ready && |
| 2104 | ss->ss_state != nua_callstate_init) { |
| 2105 | return nua_server_retry_after(sr, 500, "Overlapping Requests 2", 0, 10); |
| 2106 | } |
| 2107 | } |
| 2108 | |
| 2109 | sr->sr_neutral = 0; |
| 2110 | |
| 2111 | return 0; |
| 2112 | } |
| 2113 | |
| 2114 | /** Initialize session server request. |
| 2115 | * |
| 2116 | * Ensure that the request is valid. |
| 2117 | */ |
| 2118 | static int |
| 2119 | nua_session_server_init(nua_server_request_t *sr) |
| 2120 | { |
| 2121 | nua_handle_t *nh = sr->sr_owner; |
| 2122 | nua_t *nua = nh->nh_nua; |
| 2123 | |
| 2124 | msg_t *msg = sr->sr_response.msg; |
| 2125 | sip_t *sip = sr->sr_response.sip; |
| 2126 | |
| 2127 | sip_t *request = (sip_t *) sr->sr_request.sip; |
| 2128 | |
| 2129 | if (!sr->sr_initial) |
| 2130 | sr->sr_usage = nua_dialog_usage_get(nh->nh_ds, nua_session_usage, NULL((void*)0)); |
| 2131 | |
| 2132 | if (sr->sr_method != sip_method_invite && sr->sr_usage == NULL((void*)0)) { |
| 2133 | /* UPDATE/PRACK sent within an existing dialog? */ |
| 2134 | return SR_STATUS(sr, 481, "Call Does Not Exist")((sr)->sr_phrase = ("Call Does Not Exist"), (sr)->sr_status = (481)); |
| 2135 | } |
| 2136 | else if (sr->sr_usage) { |
| 2137 | nua_session_usage_t *ss = nua_dialog_usage_private(sr->sr_usage)((sr->sr_usage) ? (void*)((sr->sr_usage) + 1) : ((void* )0)); |
| 2138 | if (ss->ss_state >= nua_callstate_terminating) |
| 2139 | return SR_STATUS(sr, 481, "Call is being terminated")((sr)->sr_phrase = ("Call is being terminated"), (sr)-> sr_status = (481)); |
| 2140 | } |
| 2141 | |
| 2142 | if (nh->nh_soa) { |
| 2143 | sip_accept_t *a = nua->nua_invite_accept; |
| 2144 | |
| 2145 | /* XXX - soa should know what it supports */ |
| 2146 | sip_add_dup(msg, sip, (sip_header_t *)a); |
| 2147 | |
| 2148 | /* if we see there is a multipart content-type, |
| 2149 | parse it into the sip structre and find the SDP and replace it |
| 2150 | into the request as the requested content */ |
| 2151 | if (request->sip_content_type && |
| 2152 | su_casenmatch(request->sip_content_type->c_type, "multipart/", 10)) { |
| 2153 | msg_multipart_t *mp, *mpp; |
| 2154 | |
| 2155 | if (request->sip_multipart) { |
| 2156 | mp = request->sip_multipart; |
| 2157 | } else { |
| 2158 | mp = msg_multipart_parse(nua_handle_home(nh)((su_home_t *)(nh)), |
| 2159 | request->sip_content_type, |
| 2160 | (sip_payload_t *)request->sip_payload); |
| 2161 | request->sip_multipart = mp; |
| 2162 | } |
| 2163 | |
| 2164 | if (mp) { |
| 2165 | int sdp = 0; |
| 2166 | |
| 2167 | /* extract the SDP and set the primary content-type and payload to that SDP as if it was the only content so SOA will work */ |
| 2168 | for(mpp = mp; mpp; mpp = mpp->mp_next) { |
| 2169 | if (mpp->mp_content_type && mpp->mp_content_type->c_type && |
| 2170 | mpp->mp_payload && mpp->mp_payload->pl_data && |
| 2171 | su_casenmatch(mpp->mp_content_type->c_type, "application/sdp", 15)) { |
| 2172 | |
| 2173 | request->sip_content_type = msg_content_type_dup(nua_handle_home(nh)((su_home_t *)(nh)), mpp->mp_content_type); |
| 2174 | |
| 2175 | if (request->sip_content_length) { |
| 2176 | request->sip_content_length->l_length = mpp->mp_payload->pl_len; |
| 2177 | } |
| 2178 | |
| 2179 | request->sip_payload->pl_data = su_strdup(nua_handle_home(nh)((su_home_t *)(nh)), mpp->mp_payload->pl_data); |
| 2180 | request->sip_payload->pl_len = mpp->mp_payload->pl_len; |
| 2181 | |
| 2182 | sdp++; |
| 2183 | |
| 2184 | break; |
| 2185 | } |
| 2186 | } |
| 2187 | |
| 2188 | /* insist on the existance of a SDP in the content or refuse the request */ |
| 2189 | if (!sdp) { |
| 2190 | return SR_STATUS1(sr, SIP_406_NOT_ACCEPTABLE)sr_status(sr, 406, sip_406_Not_acceptable); |
| 2191 | } |
| 2192 | } |
| 2193 | } |
| 2194 | |
| 2195 | |
| 2196 | /* Make sure caller uses application/sdp without compression */ |
| 2197 | if (nta_check_session_content(NULL((void*)0), request, a, TAG_END()(tag_type_t)0, (tag_value_t)0)) { |
| 2198 | sip_add_make(msg, sip, sip_accept_encoding_class, ""); |
| 2199 | return SR_STATUS1(sr, SIP_415_UNSUPPORTED_MEDIA)sr_status(sr, 415, sip_415_Unsupported_media); |
| 2200 | } |
| 2201 | |
| 2202 | /* Make sure caller accepts application/sdp */ |
| 2203 | if (nta_check_accept(NULL((void*)0), request, a, NULL((void*)0), TAG_END()(tag_type_t)0, (tag_value_t)0)) { |
| 2204 | sip_add_make(msg, sip, sip_accept_encoding_class, ""); |
| 2205 | return SR_STATUS1(sr, SIP_406_NOT_ACCEPTABLE)sr_status(sr, 406, sip_406_Not_acceptable); |
| 2206 | } |
| 2207 | } |
| 2208 | |
| 2209 | if (request->sip_session_expires && |
| 2210 | sip_has_feature(NH_PGET(nh, supported)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_supported ? (( nh)->nh_prefs)->nhp_supported : ((nh)->nh_nua->nua_handles ->nh_prefs)->nhp_supported), "timer") && |
| 2211 | session_timer_check_min_se(msg, sip, request, NH_PGET(nh, min_se)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_min_se ? ((nh) ->nh_prefs)->nhp_min_se : ((nh)->nh_nua->nua_handles ->nh_prefs)->nhp_min_se))) { |
| 2212 | if (sip->sip_min_se) |
| 2213 | return SR_STATUS1(sr, SIP_422_SESSION_TIMER_TOO_SMALL)sr_status(sr, 422, sip_422_Session_timer); |
| 2214 | else |
| 2215 | return SR_STATUS1(sr, SIP_500_INTERNAL_SERVER_ERROR)sr_status(sr, 500, sip_500_Internal_server_error); |
| 2216 | } |
| 2217 | |
| 2218 | session_get_description(request, &sr->sr_sdp, &sr->sr_sdp_len); |
| 2219 | |
| 2220 | return 0; |
| 2221 | } |
| 2222 | |
| 2223 | /** Preprocess INVITE. |
| 2224 | * |
| 2225 | * This is called after a handle has been created for an incoming INVITE. |
| 2226 | */ |
| 2227 | int nua_invite_server_preprocess(nua_server_request_t *sr) |
| 2228 | { |
| 2229 | nua_handle_t *nh = sr->sr_owner; |
| 2230 | nua_dialog_state_t *ds = nh->nh_ds; |
| 2231 | nua_session_usage_t *ss; |
| 2232 | |
| 2233 | sip_t const *request = sr->sr_request.sip; |
| 2234 | |
| 2235 | assert(sr->sr_status == 100)((void) sizeof ((sr->sr_status == 100) ? 1 : 0), __extension__ ({ if (sr->sr_status == 100) ; else __assert_fail ("sr->sr_status == 100" , "nua_session.c", 2235, __extension__ __PRETTY_FUNCTION__); } )); |
| 2236 | assert(nh != nh->nh_nua->nua_dhandle)((void) sizeof ((nh != nh->nh_nua->nua_handles) ? 1 : 0 ), __extension__ ({ if (nh != nh->nh_nua->nua_handles) ; else __assert_fail ("nh != nh->nh_nua->nua_dhandle", "nua_session.c" , 2236, __extension__ __PRETTY_FUNCTION__); })); |
| 2237 | |
| 2238 | if (sr->sr_status > 100) |
| 2239 | return sr->sr_status; |
| 2240 | |
| 2241 | if (nh->nh_soa) |
| 2242 | soa_init_offer_answer(nh->nh_soa); |
| 2243 | |
| 2244 | if (sr->sr_sdp) { |
| 2245 | if (nh->nh_soa && |
| 2246 | soa_set_remote_sdp(nh->nh_soa, NULL((void*)0), sr->sr_sdp, sr->sr_sdp_len) < 0) { |
| 2247 | SU_DEBUG_5(("nua(%p): %s server: error parsing SDP\n", (void *)nh,((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 2248, "nua(%p): %s server: error parsing SDP\n" , (void *)nh, "INVITE")) : (void)0) |
| 2248 | "INVITE"))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 2248, "nua(%p): %s server: error parsing SDP\n" , (void *)nh, "INVITE")) : (void)0); |
| 2249 | return SR_STATUS(sr, 400, "Bad Session Description")((sr)->sr_phrase = ("Bad Session Description"), (sr)->sr_status = (400)); |
| 2250 | } |
| 2251 | else |
| 2252 | sr->sr_offer_recv = 1; |
| 2253 | } |
| 2254 | |
| 2255 | /* Add the session usage */ |
| 2256 | if (sr->sr_usage == NULL((void*)0)) { |
| 2257 | sr->sr_usage = nua_dialog_usage_add(nh, ds, nua_session_usage, NULL((void*)0)); |
| 2258 | if (sr->sr_usage == NULL((void*)0)) |
| 2259 | return SR_STATUS1(sr, SIP_500_INTERNAL_SERVER_ERROR)sr_status(sr, 500, sip_500_Internal_server_error); |
| 2260 | } |
| 2261 | |
| 2262 | ss = nua_dialog_usage_private(sr->sr_usage)((sr->sr_usage) ? (void*)((sr->sr_usage) + 1) : ((void* )0)); |
| 2263 | |
| 2264 | if (sr->sr_offer_recv) |
| 2265 | ss->ss_oa_recv = Offer; |
| 2266 | |
| 2267 | ss->ss_100rel = NH_PGET(nh, early_media)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_early_media ? ( (nh)->nh_prefs)->nhp_early_media : ((nh)->nh_nua-> nua_handles->nh_prefs)->nhp_early_media); |
| 2268 | ss->ss_precondition = sip_has_feature(request->sip_require, "precondition"); |
| 2269 | if (ss->ss_precondition) |
| 2270 | ss->ss_100rel = 1; |
| 2271 | |
| 2272 | session_timer_store(ss->ss_timer, request); |
| 2273 | |
| 2274 | #if 0 /* The glare and overlap tests should take care of this. */ |
| 2275 | assert(ss->ss_state >= nua_callstate_completed ||((void) sizeof ((ss->ss_state >= nua_callstate_completed || ss->ss_state == nua_callstate_init) ? 1 : 0), __extension__ ({ if (ss->ss_state >= nua_callstate_completed || ss-> ss_state == nua_callstate_init) ; else __assert_fail ("ss->ss_state >= nua_callstate_completed || ss->ss_state == nua_callstate_init" , "nua_session.c", 2276, __extension__ __PRETTY_FUNCTION__); } )) |
| 2276 | ss->ss_state == nua_callstate_init)((void) sizeof ((ss->ss_state >= nua_callstate_completed || ss->ss_state == nua_callstate_init) ? 1 : 0), __extension__ ({ if (ss->ss_state >= nua_callstate_completed || ss-> ss_state == nua_callstate_init) ; else __assert_fail ("ss->ss_state >= nua_callstate_completed || ss->ss_state == nua_callstate_init" , "nua_session.c", 2276, __extension__ __PRETTY_FUNCTION__); } )); |
| 2277 | #endif |
| 2278 | |
| 2279 | if (NH_PGET(nh, auto_answer)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_auto_answer ? ( (nh)->nh_prefs)->nhp_auto_answer : ((nh)->nh_nua-> nua_handles->nh_prefs)->nhp_auto_answer) || |
| 2280 | /* Auto-answer to re-INVITE unless auto_answer is set to 0 on handle */ |
| 2281 | (ss->ss_state == nua_callstate_ready && |
| 2282 | /* Auto-answer requires enabled media (soa). |
| 2283 | * XXX - if the re-INVITE modifies the media we should not auto-answer. |
| 2284 | */ |
| 2285 | nh->nh_soa && |
| 2286 | !NH_PISSET(nh, auto_answer)((((nh)->nh_prefs)->nhp_set_.set_bits.nhb_auto_answer) && (nh)->nh_nua->nua_handles->nh_prefs != (nh)->nh_prefs ))) { |
| 2287 | SR_STATUS1(sr, SIP_200_OK)sr_status(sr, 200, sip_200_OK); |
| 2288 | } |
| 2289 | else if (NH_PGET(nh, auto_alert)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_auto_alert ? ( (nh)->nh_prefs)->nhp_auto_alert : ((nh)->nh_nua-> nua_handles->nh_prefs)->nhp_auto_alert)) { |
| 2290 | if (ss->ss_100rel && |
| 2291 | (sip_has_feature(request->sip_supported, "100rel") || |
| 2292 | sip_has_feature(request->sip_require, "100rel"))) { |
| 2293 | SR_STATUS1(sr, SIP_183_SESSION_PROGRESS)sr_status(sr, 183, sip_183_Session_progress); |
| 2294 | } |
| 2295 | else { |
| 2296 | SR_STATUS1(sr, SIP_180_RINGING)sr_status(sr, 180, sip_180_Ringing); |
| 2297 | } |
| 2298 | } |
| 2299 | |
| 2300 | return 0; |
| 2301 | } |
| 2302 | |
| 2303 | |
| 2304 | /** @internal Respond to an INVITE request. |
| 2305 | * |
| 2306 | */ |
| 2307 | static |
| 2308 | int nua_invite_server_respond(nua_server_request_t *sr, tagi_t const *tags) |
| 2309 | { |
| 2310 | nua_handle_t *nh = sr->sr_owner; |
| 2311 | nua_dialog_usage_t *du = sr->sr_usage; |
| 2312 | nua_session_usage_t *ss = nua_dialog_usage_private(du)((du) ? (void*)((du) + 1) : ((void*)0)); |
| 2313 | msg_t *msg = sr->sr_response.msg; |
| 2314 | sip_t *sip = sr->sr_response.sip; |
| 2315 | |
| 2316 | int reliable = 0, maybe_answer = 0, offer = 0, answer = 0, extra = 0; |
| 2317 | |
| 2318 | enter(void)((((nua_log) != ((void*)0) && (nua_log)->log_init ) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 9 ? (_su_llog((nua_log), 9, "nua_session.c" , (const char *)__func__, 2318, "nua: %s: entering\n", __func__ )) : (void)0); |
| 2319 | |
| 2320 | if (du == NULL((void*)0)) { |
| 2321 | if (sr->sr_status < 300) |
| 2322 | sr_status(sr, SIP_500_INTERNAL_SERVER_ERROR500, sip_500_Internal_server_error); |
| 2323 | return nua_base_server_respond(sr, tags); |
| 2324 | } |
| 2325 | |
| 2326 | if (200 <= sr->sr_status && sr->sr_status < 300) { |
| 2327 | reliable = 1, maybe_answer = 1; |
| 2328 | } |
| 2329 | else if (nua_invite_server_is_100rel(sr, tags)) { |
| 2330 | reliable = 1, maybe_answer = 1; |
| 2331 | } |
| 2332 | else if (!nh->nh_soa || sr->sr_status >= 300) { |
| 2333 | if (sr->sr_neutral) |
| 2334 | return nua_base_server_respond(sr, tags); |
| 2335 | } |
| 2336 | else if (tags && 100 < sr->sr_status && sr->sr_status < 200 && |
| 2337 | !NHP_ISSET(nh->nh_prefs, early_answer)((nh->nh_prefs)->nhp_set_.set_bits.nhb_early_answer)) { |
| 2338 | sdp_session_t const *user_sdp = NULL((void*)0); |
| 2339 | char const *user_sdp_str = NULL((void*)0); |
| 2340 | |
| 2341 | tl_gets(tags, |
| 2342 | SOATAG_USER_SDP_REF(user_sdp)soatag_user_sdp_ref, sdptag_session_vr(&(user_sdp)), |
| 2343 | SOATAG_USER_SDP_STR_REF(user_sdp_str)soatag_user_sdp_str_ref, tag_str_vr(&(user_sdp_str)), |
| 2344 | TAG_END()(tag_type_t)0, (tag_value_t)0); |
| 2345 | |
| 2346 | maybe_answer = user_sdp || user_sdp_str; |
| 2347 | } |
| 2348 | else { |
| 2349 | maybe_answer = NH_PGET(nh, early_answer)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_early_answer ? ((nh)->nh_prefs)->nhp_early_answer : ((nh)->nh_nua-> nua_handles->nh_prefs)->nhp_early_answer); |
| 2350 | } |
| 2351 | |
| 2352 | if (!nh->nh_soa) { |
| 2353 | if (session_get_description(sip, NULL((void*)0), NULL((void*)0))) { |
| 2354 | if (sr->sr_offer_recv) |
| 2355 | answer = 1; |
| 2356 | else if (sr->sr_offer_sent < 2) |
| 2357 | offer = 1; |
| 2358 | } |
| 2359 | } |
| 2360 | else if (sr->sr_status >= 300) { |
| 2361 | soa_clear_remote_sdp(nh->nh_soa); |
| 2362 | } |
| 2363 | else if (sr->sr_offer_sent && !sr->sr_answer_recv) |
| 2364 | /* Wait for answer */; |
| 2365 | else if (sr->sr_offer_recv && sr->sr_answer_sent > 1) { |
| 2366 | /* We have sent answer */ |
| 2367 | /* ... but we may want to send it again */ |
| 2368 | tagi_t const *t = tl_find_last(tags, nutag_include_extra_sdp); |
| 2369 | extra = t && t->t_value; |
| 2370 | } |
| 2371 | else if (sr->sr_offer_recv && !sr->sr_answer_sent && maybe_answer) { |
| 2372 | /* Generate answer */ |
| 2373 | if (soa_generate_answer(nh->nh_soa, NULL((void*)0)) >= 0 && |
| 2374 | soa_activate(nh->nh_soa, NULL((void*)0)) >= 0) { |
| 2375 | answer = 1; /* signal that O/A answer sent (answer to invite) */ |
| 2376 | /* ss_sdp_version is updated only after answer is sent reliably */ |
| 2377 | } |
| 2378 | /* We have an error! */ |
| 2379 | else if (sr->sr_status >= 200) { |
| 2380 | sip_warning_t *warning = NULL((void*)0); |
| 2381 | int wcode; |
| 2382 | char const *text; |
| 2383 | char const *host = "invalid."; |
| 2384 | |
| 2385 | sr->sr_status = soa_error_as_sip_response(nh->nh_soa, &sr->sr_phrase); |
| 2386 | |
| 2387 | wcode = soa_get_warning(nh->nh_soa, &text); |
| 2388 | |
| 2389 | if (wcode) { |
| 2390 | if (sip->sip_contact) |
| 2391 | host = sip->sip_contact->m_url->url_host; |
| 2392 | warning = sip_warning_format(msg_home(msg)((su_home_t*)(msg)), "%u %s \"%s\"", |
| 2393 | wcode, host, text); |
| 2394 | sip_header_insert(msg, sip, (sip_header_t *)warning); |
| 2395 | } |
| 2396 | } |
| 2397 | else { |
| 2398 | /* 1xx - we don't have to send answer */ |
| 2399 | } |
| 2400 | } |
| 2401 | else if (sr->sr_offer_recv && sr->sr_answer_sent == 1 && maybe_answer) { |
| 2402 | /* The answer was sent unreliably, keep sending it */ |
| 2403 | answer = 1; |
| 2404 | } |
| 2405 | else if (!sr->sr_offer_recv && !sr->sr_offer_sent && reliable) { |
| 2406 | if (200 <= sr->sr_status && nua_callstate_ready <= ss->ss_state && |
| 2407 | NH_PGET(nh, refresh_without_sdp)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_refresh_without_sdp ? ((nh)->nh_prefs)->nhp_refresh_without_sdp : ((nh)-> nh_nua->nua_handles->nh_prefs)->nhp_refresh_without_sdp )) |
| 2408 | /* This is a re-INVITE without SDP - do not try to send offer in 200 */; |
| 2409 | else |
| 2410 | /* Generate offer */ |
| 2411 | if (soa_generate_offer(nh->nh_soa, 0, NULL((void*)0)) < 0) |
| 2412 | sr->sr_status = soa_error_as_sip_response(nh->nh_soa, &sr->sr_phrase); |
| 2413 | else |
| 2414 | offer = 1; |
| 2415 | } |
| 2416 | |
| 2417 | if (sr->sr_status < 300 && (offer || answer || extra)) { |
| 2418 | if (nh->nh_soa && session_include_description(nh->nh_soa, 1, msg, sip) < 0) |
| 2419 | SR_STATUS1(sr, SIP_500_INTERNAL_SERVER_ERROR)sr_status(sr, 500, sip_500_Internal_server_error); |
| 2420 | else if (offer) |
| 2421 | sr->sr_offer_sent = 1 + reliable, ss->ss_oa_sent = Offer; |
| 2422 | else if (answer) |
| 2423 | sr->sr_answer_sent = 1 + reliable, ss->ss_oa_sent = Answer; |
| 2424 | |
| 2425 | if (answer && reliable && nh->nh_soa) { |
| 2426 | ss->ss_sdp_version = soa_get_user_version(nh->nh_soa); |
| 2427 | } |
| 2428 | } |
| 2429 | |
| 2430 | if (reliable && sr->sr_status < 200) { |
| 2431 | sr->sr_response.msg = NULL((void*)0), sr->sr_response.sip = NULL((void*)0); |
| 2432 | if (nta_reliable_mreply(sr->sr_irq, process_prack, sr, msg) == NULL((void*)0)) |
| 2433 | return -1; |
| 2434 | sr->sr_100rel = 1; |
| 2435 | return 0; |
| 2436 | } |
| 2437 | |
| 2438 | if (200 <= sr->sr_status && sr->sr_status < 300) { |
| 2439 | session_timer_preferences(ss->ss_timer, |
| 2440 | sip, |
| 2441 | NH_PGET(nh, supported)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_supported ? (( nh)->nh_prefs)->nhp_supported : ((nh)->nh_nua->nua_handles ->nh_prefs)->nhp_supported), |
| 2442 | NH_PGET(nh, session_timer)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_session_timer ? ((nh)->nh_prefs)->nhp_session_timer : ((nh)->nh_nua ->nua_handles->nh_prefs)->nhp_session_timer), |
| 2443 | NUA_PISSET(nh->nh_nua, nh, session_timer)((((nh->nh_nua)->nua_handles->nh_prefs)->nhp_set_ .set_bits.nhb_session_timer) || ((nh) && (((nh)->nh_prefs )->nhp_set_.set_bits.nhb_session_timer))), |
| 2444 | NH_PGET(nh, refresher)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_refresher ? (( nh)->nh_prefs)->nhp_refresher : ((nh)->nh_nua->nua_handles ->nh_prefs)->nhp_refresher), |
| 2445 | NH_PGET(nh, min_se)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_min_se ? ((nh) ->nh_prefs)->nhp_min_se : ((nh)->nh_nua->nua_handles ->nh_prefs)->nhp_min_se)); |
| 2446 | |
| 2447 | if (session_timer_is_supported(ss->ss_timer)) |
| 2448 | session_timer_add_headers(ss->ss_timer, 0, msg, sip, nh); |
| 2449 | } |
| 2450 | |
| 2451 | return nua_base_server_respond(sr, tags); |
| 2452 | } |
| 2453 | |
| 2454 | /** Check if the response should be sent reliably. |
| 2455 | * XXX - use tags to indicate when to use reliable responses ??? |
| 2456 | */ |
| 2457 | static |
| 2458 | int nua_invite_server_is_100rel(nua_server_request_t *sr, tagi_t const *tags) |
| 2459 | { |
| 2460 | nua_handle_t *nh = sr->sr_owner; |
| 2461 | sip_require_t *require = sr->sr_request.sip->sip_require; |
| 2462 | sip_supported_t *supported = sr->sr_request.sip->sip_supported; |
| 2463 | |
| 2464 | if (sr->sr_status >= 200) |
| 2465 | return 0; |
| 2466 | else if (sr->sr_status == 100) |
| 2467 | return 0; |
| 2468 | |
| 2469 | if (sip_has_feature(sr->sr_response.sip->sip_require, "100rel")) |
| 2470 | return 1; |
| 2471 | |
| 2472 | if (require == NULL((void*)0) && supported == NULL((void*)0)) |
| 2473 | return 0; |
| 2474 | |
| 2475 | if (!sip_has_feature(NH_PGET(nh, supported)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_supported ? (( nh)->nh_prefs)->nhp_supported : ((nh)->nh_nua->nua_handles ->nh_prefs)->nhp_supported), "100rel")) |
| 2476 | return 0; |
| 2477 | if (sip_has_feature(require, "100rel")) |
| 2478 | return 1; |
| 2479 | if (!sip_has_feature(supported, "100rel")) |
| 2480 | return 0; |
| 2481 | if (sr->sr_status == 183) |
| 2482 | return 1; |
| 2483 | |
| 2484 | if (NH_PGET(nh, early_media)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_early_media ? ( (nh)->nh_prefs)->nhp_early_media : ((nh)->nh_nua-> nua_handles->nh_prefs)->nhp_early_media) && !NH_PGET(nh, only183_100rel)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_only183_100rel ? ((nh)->nh_prefs)->nhp_only183_100rel : ((nh)->nh_nua ->nua_handles->nh_prefs)->nhp_only183_100rel)) |
| 2485 | return 1; |
| 2486 | |
| 2487 | if (sip_has_feature(require, "precondition")) { |
| 2488 | if (!NH_PGET(nh, only183_100rel)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_only183_100rel ? ((nh)->nh_prefs)->nhp_only183_100rel : ((nh)->nh_nua ->nua_handles->nh_prefs)->nhp_only183_100rel)) |
| 2489 | return 1; |
| 2490 | if (sr->sr_offer_recv && !sr->sr_answer_sent) |
| 2491 | return 1; |
| 2492 | } |
| 2493 | |
| 2494 | return 0; |
| 2495 | } |
| 2496 | |
| 2497 | |
| 2498 | int nua_invite_server_report(nua_server_request_t *sr, tagi_t const *tags) |
| 2499 | { |
| 2500 | nua_handle_t *nh = sr->sr_owner; |
| 2501 | nua_dialog_usage_t *du = sr->sr_usage; |
| 2502 | nua_session_usage_t *ss = nua_dialog_usage_private(sr->sr_usage)((sr->sr_usage) ? (void*)((sr->sr_usage) + 1) : ((void* )0)); |
| 2503 | int initial = sr->sr_initial && !sr->sr_event; |
| 2504 | int neutral = sr->sr_neutral; |
| 2505 | int application = sr->sr_application; |
| 2506 | int status = sr->sr_status; char const *phrase = sr->sr_phrase; |
| 2507 | int retval; |
| 2508 | |
| 2509 | if (!sr->sr_event && status < 300) { /* Not reported yet */ |
| 2510 | nta_incoming_bind(sr->sr_irq, process_ack_or_cancel, sr); |
| 2511 | } |
| 2512 | |
| 2513 | retval = nua_base_server_report(sr, tags), sr = NULL((void*)0); /* destroys sr */ |
| 2514 | |
| 2515 | if (retval >= 2 || ss == NULL((void*)0)) { |
| 2516 | /* Session has been terminated. */ |
| 2517 | if (!initial && !neutral) { |
| 2518 | #if 0 |
| 2519 | signal_call_state_change(nh, NULL((void*)0), status, phrase, |
| 2520 | nua_callstate_terminated); |
| 2521 | #endif |
| 2522 | } |
| 2523 | return retval; |
| 2524 | } |
| 2525 | |
| 2526 | /* Update session state */ |
| 2527 | if (status < 300 || application != 0) { |
| 2528 | assert(ss->ss_state != nua_callstate_calling)((void) sizeof ((ss->ss_state != nua_callstate_calling) ? 1 : 0), __extension__ ({ if (ss->ss_state != nua_callstate_calling ) ; else __assert_fail ("ss->ss_state != nua_callstate_calling" , "nua_session.c", 2528, __extension__ __PRETTY_FUNCTION__); } )); |
| 2529 | assert(ss->ss_state != nua_callstate_proceeding)((void) sizeof ((ss->ss_state != nua_callstate_proceeding) ? 1 : 0), __extension__ ({ if (ss->ss_state != nua_callstate_proceeding ) ; else __assert_fail ("ss->ss_state != nua_callstate_proceeding" , "nua_session.c", 2529, __extension__ __PRETTY_FUNCTION__); } )); |
| 2530 | signal_call_state_change(nh, ss, status, phrase, |
| 2531 | status >= 300 |
| 2532 | ? nua_callstate_init |
| 2533 | : status >= 200 |
| 2534 | ? nua_callstate_completed |
| 2535 | : status > 100 |
| 2536 | ? nua_callstate_early |
| 2537 | : nua_callstate_received); |
| 2538 | } |
| 2539 | |
| 2540 | if (status == 180) |
| 2541 | ss->ss_alerting = 1; |
| 2542 | else if (status >= 200) |
| 2543 | ss->ss_alerting = 0; |
| 2544 | |
| 2545 | if (200 <= status && status < 300) { |
| 2546 | du->du_ready = 1; |
| 2547 | } |
| 2548 | else if (300 <= status && !neutral) { |
| 2549 | if (nh->nh_soa) |
| 2550 | soa_init_offer_answer(nh->nh_soa); |
| 2551 | } |
| 2552 | |
| 2553 | if (ss->ss_state == nua_callstate_init) { |
| 2554 | assert(status >= 300)((void) sizeof ((status >= 300) ? 1 : 0), __extension__ ({ if (status >= 300) ; else __assert_fail ("status >= 300" , "nua_session.c", 2554, __extension__ __PRETTY_FUNCTION__); } )); |
| 2555 | nua_session_usage_destroy(nh, ss); |
| 2556 | } |
| 2557 | |
| 2558 | return retval; |
| 2559 | } |
| 2560 | |
| 2561 | /** @internal Process ACK or CANCEL or timeout (no ACK) for incoming INVITE */ |
| 2562 | static |
| 2563 | int process_ack_or_cancel(nua_server_request_t *sr, |
| 2564 | nta_incoming_t *irq, |
| 2565 | sip_t const *sip) |
| 2566 | { |
| 2567 | enter(void)((((nua_log) != ((void*)0) && (nua_log)->log_init ) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 9 ? (_su_llog((nua_log), 9, "nua_session.c" , (const char *)__func__, 2567, "nua: %s: entering\n", __func__ )) : (void)0); |
| 2568 | |
| 2569 | assert(sr->sr_usage)((void) sizeof ((sr->sr_usage) ? 1 : 0), __extension__ ({ if (sr->sr_usage) ; else __assert_fail ("sr->sr_usage", "nua_session.c" , 2569, __extension__ __PRETTY_FUNCTION__); })); |
| 2570 | assert(sr->sr_usage->du_class == nua_session_usage)((void) sizeof ((sr->sr_usage->du_class == nua_session_usage ) ? 1 : 0), __extension__ ({ if (sr->sr_usage->du_class == nua_session_usage) ; else __assert_fail ("sr->sr_usage->du_class == nua_session_usage" , "nua_session.c", 2570, __extension__ __PRETTY_FUNCTION__); } )); |
| 2571 | |
| 2572 | if (sip && sip->sip_request->rq_method == sip_method_ack) |
| 2573 | return process_ack(sr, irq, sip); |
| 2574 | else if (sip && sip->sip_request->rq_method == sip_method_cancel) |
| 2575 | return process_cancel(sr, irq, sip); |
| 2576 | else |
| 2577 | return process_timeout(sr, irq); |
| 2578 | } |
| 2579 | |
| 2580 | /** @NUA_EVENT nua_i_ack |
| 2581 | * |
| 2582 | * Final response to INVITE has been acknowledged by UAC with ACK. |
| 2583 | * |
| 2584 | * @note This event is only sent after 2XX response. |
| 2585 | * |
| 2586 | * @param nh operation handle associated with the call |
| 2587 | * @param hmagic application context associated with the call |
| 2588 | * @param sip incoming ACK request |
| 2589 | * @param tags empty |
| 2590 | * |
| 2591 | * @sa #nua_i_invite, #nua_i_state, @ref nua_uas_call_model, nua_ack() |
| 2592 | * |
| 2593 | * @END_NUA_EVENT |
| 2594 | */ |
| 2595 | static |
| 2596 | int process_ack(nua_server_request_t *sr, |
| 2597 | nta_incoming_t *irq, |
| 2598 | sip_t const *sip) |
| 2599 | { |
| 2600 | nua_handle_t *nh = sr->sr_owner; |
| 2601 | nua_session_usage_t *ss = nua_dialog_usage_private(sr->sr_usage)((sr->sr_usage) ? (void*)((sr->sr_usage) + 1) : ((void* )0)); |
| 2602 | msg_t *msg = nta_incoming_getrequest_ackcancel(irq); |
| 2603 | char const *recv = NULL((void*)0); |
| 2604 | int uas; |
| 2605 | |
| 2606 | if (ss == NULL((void*)0)) |
| 2607 | return 0; |
| 2608 | |
| 2609 | if (sr->sr_offer_sent && !sr->sr_answer_recv) { |
| 2610 | char const *sdp; |
| 2611 | size_t len; |
| 2612 | |
| 2613 | if (session_get_description(sip, &sdp, &len)) |
| 2614 | recv = Answer; |
| 2615 | |
| 2616 | if (recv) { |
| 2617 | assert(ss->ss_oa_recv == NULL)((void) sizeof ((ss->ss_oa_recv == ((void*)0)) ? 1 : 0), __extension__ ({ if (ss->ss_oa_recv == ((void*)0)) ; else __assert_fail ("ss->ss_oa_recv == NULL", "nua_session.c", 2617, __extension__ __PRETTY_FUNCTION__); })); |
| 2618 | ss->ss_oa_recv = recv; |
| 2619 | } |
| 2620 | |
| 2621 | if (nh->nh_soa == NULL((void*)0)) |
| 2622 | ; |
| 2623 | else if (recv == NULL((void*)0) ) { |
| 2624 | if (ss->ss_state >= nua_callstate_ready && |
| 2625 | soa_get_user_version(nh->nh_soa) == ss->ss_sdp_version && |
| 2626 | soa_process_reject(nh->nh_soa, NULL((void*)0)) >= 0) { |
| 2627 | url_t const *m; |
| 2628 | |
| 2629 | /* The re-INVITE was a refresh and re-INVITEr ignored our offer */ |
| 2630 | ss->ss_oa_sent = NULL((void*)0); |
| 2631 | |
| 2632 | if (sr->sr_request.sip->sip_contact) |
| 2633 | m = sr->sr_request.sip->sip_contact->m_url; |
| 2634 | else |
| 2635 | m = sr->sr_request.sip->sip_from->a_url; |
| 2636 | |
| 2637 | SU_DEBUG_3(("nua(%p): re-INVITEr ignored offer in our %u response "((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 2639, "nua(%p): re-INVITEr ignored offer in our %u response " "(Contact: <" "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s" ">)\n" , (void *)nh, sr->sr_status, (m)->url_scheme ? (m)-> url_scheme : "", (m)->url_type != url_any && (m)-> url_scheme && (m)->url_scheme[0] ? ":" : "", (m)-> url_root && ((m)->url_host || (m)->url_user) ? "//" : "", (m)->url_user ? (m)->url_user : "", (m)->url_user && (m)->url_password ? ":" : "", (m)->url_user && (m)->url_password ? (m)->url_password : "", (m)->url_user && (m)->url_host ? "@" : "", (m) ->url_host ? (m)->url_host : "", (m)->url_host && (m)->url_port ? ":" : "", (m)->url_host && (m) ->url_port ? (m)->url_port : "", (m)->url_root && (m)->url_path ? "/" : "", (m)->url_path ? (m)->url_path : "", (m)->url_params ? ";" : "", (m)->url_params ? (m )->url_params : "", (m)->url_headers ? "?" : "", (m)-> url_headers ? (m)->url_headers : "", (m)->url_fragment ? "#" : "", (m)->url_fragment ? (m)->url_fragment : "")) : (void)0) |
| 2638 | "(Contact: <" URL_PRINT_FORMAT ">)\n",((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 2639, "nua(%p): re-INVITEr ignored offer in our %u response " "(Contact: <" "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s" ">)\n" , (void *)nh, sr->sr_status, (m)->url_scheme ? (m)-> url_scheme : "", (m)->url_type != url_any && (m)-> url_scheme && (m)->url_scheme[0] ? ":" : "", (m)-> url_root && ((m)->url_host || (m)->url_user) ? "//" : "", (m)->url_user ? (m)->url_user : "", (m)->url_user && (m)->url_password ? ":" : "", (m)->url_user && (m)->url_password ? (m)->url_password : "", (m)->url_user && (m)->url_host ? "@" : "", (m) ->url_host ? (m)->url_host : "", (m)->url_host && (m)->url_port ? ":" : "", (m)->url_host && (m) ->url_port ? (m)->url_port : "", (m)->url_root && (m)->url_path ? "/" : "", (m)->url_path ? (m)->url_path : "", (m)->url_params ? ";" : "", (m)->url_params ? (m )->url_params : "", (m)->url_headers ? "?" : "", (m)-> url_headers ? (m)->url_headers : "", (m)->url_fragment ? "#" : "", (m)->url_fragment ? (m)->url_fragment : "")) : (void)0) |
| 2639 | (void *)nh, sr->sr_status, URL_PRINT_ARGS(m)))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 2639, "nua(%p): re-INVITEr ignored offer in our %u response " "(Contact: <" "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s" ">)\n" , (void *)nh, sr->sr_status, (m)->url_scheme ? (m)-> url_scheme : "", (m)->url_type != url_any && (m)-> url_scheme && (m)->url_scheme[0] ? ":" : "", (m)-> url_root && ((m)->url_host || (m)->url_user) ? "//" : "", (m)->url_user ? (m)->url_user : "", (m)->url_user && (m)->url_password ? ":" : "", (m)->url_user && (m)->url_password ? (m)->url_password : "", (m)->url_user && (m)->url_host ? "@" : "", (m) ->url_host ? (m)->url_host : "", (m)->url_host && (m)->url_port ? ":" : "", (m)->url_host && (m) ->url_port ? (m)->url_port : "", (m)->url_root && (m)->url_path ? "/" : "", (m)->url_path ? (m)->url_path : "", (m)->url_params ? ";" : "", (m)->url_params ? (m )->url_params : "", (m)->url_headers ? "?" : "", (m)-> url_headers ? (m)->url_headers : "", (m)->url_fragment ? "#" : "", (m)->url_fragment ? (m)->url_fragment : "")) : (void)0); |
| 2640 | if (sr->sr_request.sip->sip_user_agent) |
| 2641 | SU_DEBUG_3(("nua(%p): re-INVITE: \"User-Agent: %s\"\n", (void *)nh,((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 2642, "nua(%p): re-INVITE: \"User-Agent: %s\"\n" , (void *)nh, sr->sr_request.sip->sip_user_agent->g_string )) : (void)0) |
| 2642 | sr->sr_request.sip->sip_user_agent->g_string))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 2642, "nua(%p): re-INVITE: \"User-Agent: %s\"\n" , (void *)nh, sr->sr_request.sip->sip_user_agent->g_string )) : (void)0); |
| 2643 | } |
| 2644 | else |
| 2645 | return process_ack_error(sr, msg, 488, "Offer-Answer error", |
| 2646 | "SIP;cause=488;text=\"No answer to offer\""); |
| 2647 | } |
| 2648 | else if (soa_set_remote_sdp(nh->nh_soa, NULL((void*)0), sdp, len) >= 0 && |
| 2649 | soa_process_answer(nh->nh_soa, NULL((void*)0)) >= 0 && |
| 2650 | soa_activate(nh->nh_soa, NULL((void*)0)) >= 0) { |
| 2651 | ss->ss_sdp_version = soa_get_user_version(nh->nh_soa); |
| 2652 | } |
| 2653 | else { |
| 2654 | int status; char const *phrase, *reason; |
| 2655 | |
| 2656 | status = soa_error_as_sip_response(nh->nh_soa, &phrase); |
| 2657 | reason = soa_error_as_sip_reason(nh->nh_soa); |
| 2658 | |
| 2659 | return process_ack_error(sr, msg, status, phrase, reason); |
| 2660 | } |
| 2661 | } |
| 2662 | |
| 2663 | if (nh->nh_soa) |
| 2664 | soa_clear_remote_sdp(nh->nh_soa); |
| 2665 | |
| 2666 | nua_stack_event(nh->nh_nua, nh, msg, nua_i_ack, SIP_200_OK200, sip_200_OK, NULL((void*)0)); |
| 2667 | signal_call_state_change(nh, ss, 200, "OK", nua_callstate_ready); |
| 2668 | session_timer_set(ss, uas = 1); |
Although the value stored to 'uas' is used in the enclosing expression, the value is never actually read from 'uas' | |
| 2669 | |
| 2670 | nua_server_request_destroy(sr); |
| 2671 | |
| 2672 | return 0; |
| 2673 | } |
| 2674 | |
| 2675 | static int |
| 2676 | process_ack_error(nua_server_request_t *sr, |
| 2677 | msg_t *ackmsg, |
| 2678 | int status, |
| 2679 | char const *phrase, |
| 2680 | char const *reason) |
| 2681 | { |
| 2682 | nua_handle_t *nh = sr->sr_owner; |
| 2683 | nua_session_usage_t *ss = nua_dialog_usage_private(sr->sr_usage)((sr->sr_usage) ? (void*)((sr->sr_usage) + 1) : ((void* )0)); |
| 2684 | int error; |
| 2685 | |
| 2686 | nua_stack_event(nh->nh_nua, nh, ackmsg, |
| 2687 | nua_i_ack, status, phrase, NULL((void*)0)); |
| 2688 | nua_stack_event(nh->nh_nua, nh, NULL((void*)0), |
| 2689 | nua_i_media_error, status, phrase, NULL((void*)0)); |
| 2690 | |
| 2691 | if (reason) ss->ss_reason = reason; |
| 2692 | ss->ss_reporting = 1; |
| 2693 | error = nua_client_create(nh, nua_r_bye, &nua_bye_client_methods, NULL((void*)0)); |
| 2694 | ss->ss_reporting = 0; |
| 2695 | |
| 2696 | signal_call_state_change(nh, ss, |
| 2697 | 488, "Offer-Answer Error", |
| 2698 | /* We report terminated state if BYE failed */ |
| 2699 | error |
| 2700 | ? nua_callstate_terminated |
| 2701 | : nua_callstate_terminating); |
| 2702 | |
| 2703 | return 0; |
| 2704 | } |
| 2705 | |
| 2706 | |
| 2707 | /** @NUA_EVENT nua_i_cancel |
| 2708 | * |
| 2709 | * Incoming INVITE has been cancelled by the client. |
| 2710 | * |
| 2711 | * @param status status code of response to CANCEL sent automatically by stack |
| 2712 | * @param phrase a short textual description of @a status code |
| 2713 | * @param nh operation handle associated with the call |
| 2714 | * @param hmagic application context associated with the call |
| 2715 | * @param sip incoming CANCEL request |
| 2716 | * @param tags empty |
| 2717 | * |
| 2718 | * @sa @ref nua_uas_call_model, nua_cancel(), #nua_i_invite, #nua_i_state |
| 2719 | * |
| 2720 | * @END_NUA_EVENT |
| 2721 | */ |
| 2722 | |
| 2723 | /* CANCEL */ |
| 2724 | static |
| 2725 | int process_cancel(nua_server_request_t *sr, |
| 2726 | nta_incoming_t *irq, |
| 2727 | sip_t const *sip) |
| 2728 | { |
| 2729 | nua_handle_t *nh = sr->sr_owner; |
| 2730 | nua_session_usage_t *ss = nua_dialog_usage_private(sr->sr_usage)((sr->sr_usage) ? (void*)((sr->sr_usage) + 1) : ((void* )0)); |
| 2731 | msg_t *cancel = nta_incoming_getrequest_ackcancel(irq); |
| 2732 | |
| 2733 | assert(ss)((void) sizeof ((ss) ? 1 : 0), __extension__ ({ if (ss) ; else __assert_fail ("ss", "nua_session.c", 2733, __extension__ __PRETTY_FUNCTION__ ); })); assert(ss == nua_session_usage_for_dialog(nh->nh_ds))((void) sizeof ((ss == nua_session_usage_for_dialog(nh->nh_ds )) ? 1 : 0), __extension__ ({ if (ss == nua_session_usage_for_dialog (nh->nh_ds)) ; else __assert_fail ("ss == nua_session_usage_for_dialog(nh->nh_ds)" , "nua_session.c", 2733, __extension__ __PRETTY_FUNCTION__); } )); (void)ss; |
| 2734 | |
| 2735 | assert(nta_incoming_status(irq) < 200)((void) sizeof ((nta_incoming_status(irq) < 200) ? 1 : 0), __extension__ ({ if (nta_incoming_status(irq) < 200) ; else __assert_fail ("nta_incoming_status(irq) < 200", "nua_session.c" , 2735, __extension__ __PRETTY_FUNCTION__); })); |
| 2736 | |
| 2737 | nua_stack_event(nh->nh_nua, nh, cancel, nua_i_cancel, SIP_200_OK200, sip_200_OK, NULL((void*)0)); |
| 2738 | sr->sr_application = SR_STATUS1(sr, SIP_487_REQUEST_TERMINATED)sr_status(sr, 487, sip_487_Request_terminated); |
| 2739 | nua_server_respond(sr, NULL((void*)0)); |
| 2740 | nua_server_report(sr); |
| 2741 | |
| 2742 | return 0; |
| 2743 | } |
| 2744 | |
| 2745 | /* Timeout (no ACK or PRACK received) */ |
| 2746 | static |
| 2747 | int process_timeout(nua_server_request_t *sr, |
| 2748 | nta_incoming_t *irq) |
| 2749 | { |
| 2750 | nua_handle_t *nh = sr->sr_owner; |
| 2751 | nua_session_usage_t *ss = nua_dialog_usage_private(sr->sr_usage)((sr->sr_usage) ? (void*)((sr->sr_usage) + 1) : ((void* )0)); |
| 2752 | char const *phrase = "ACK Timeout"; |
| 2753 | char const *reason = "SIP;cause=408;text=\"ACK Timeout\""; |
| 2754 | int error; |
| 2755 | |
| 2756 | assert(ss)((void) sizeof ((ss) ? 1 : 0), __extension__ ({ if (ss) ; else __assert_fail ("ss", "nua_session.c", 2756, __extension__ __PRETTY_FUNCTION__ ); })); assert(ss == nua_session_usage_for_dialog(nh->nh_ds))((void) sizeof ((ss == nua_session_usage_for_dialog(nh->nh_ds )) ? 1 : 0), __extension__ ({ if (ss == nua_session_usage_for_dialog (nh->nh_ds)) ; else __assert_fail ("ss == nua_session_usage_for_dialog(nh->nh_ds)" , "nua_session.c", 2756, __extension__ __PRETTY_FUNCTION__); } )); |
| 2757 | |
| 2758 | if (nua_server_request_is_pending(sr)) { |
| 2759 | phrase = "PRACK Timeout"; |
| 2760 | reason = "SIP;cause=504;text=\"PRACK Timeout\""; |
| 2761 | } |
| 2762 | |
| 2763 | nua_stack_event(nh->nh_nua, nh, 0, nua_i_error, 408, phrase, NULL((void*)0)); |
| 2764 | |
| 2765 | if (nua_server_request_is_pending(sr)) { |
| 2766 | /* PRACK timeout */ |
| 2767 | SR_STATUS1(sr, SIP_504_GATEWAY_TIME_OUT)sr_status(sr, 504, sip_504_Gateway_time_out); |
| 2768 | nua_server_trespond(sr, |
| 2769 | SIPTAG_REASON_STR(reason)siptag_reason_str, tag_str_v(reason), |
| 2770 | TAG_END()(tag_type_t)0, (tag_value_t)0); |
| 2771 | if (nua_server_report(sr) >= 2) |
| 2772 | return 0; /* Done */ |
| 2773 | sr = NULL((void*)0); |
| 2774 | } |
| 2775 | |
| 2776 | /* send BYE, too, if 200 OK (or 183 to re-INVITE) timeouts */ |
| 2777 | ss->ss_reason = reason; |
| 2778 | |
| 2779 | ss->ss_reporting = 1; /* We report terminated state here if BYE fails */ |
| 2780 | error = nua_client_create(nh, nua_r_bye, &nua_bye_client_methods, NULL((void*)0)); |
| 2781 | ss->ss_reporting = 0; |
| 2782 | |
| 2783 | signal_call_state_change(nh, ss, 0, phrase, |
| 2784 | error |
| 2785 | ? nua_callstate_terminated |
| 2786 | : nua_callstate_terminating); |
| 2787 | |
| 2788 | if (sr) |
| 2789 | nua_server_request_destroy(sr); |
| 2790 | |
| 2791 | return 0; |
| 2792 | } |
| 2793 | |
| 2794 | |
| 2795 | /** @NUA_EVENT nua_i_prack |
| 2796 | * |
| 2797 | * Incoming PRACK request. PRACK request is used to acknowledge reliable |
| 2798 | * preliminary responses and it is usually sent automatically by the nua |
| 2799 | * stack. |
| 2800 | * |
| 2801 | * @param status status code of response sent automatically by stack |
| 2802 | * @param phrase a short textual description of @a status code |
| 2803 | * @param nh operation handle associated with the call |
| 2804 | * @param hmagic application context associated with the call |
| 2805 | * @param sip incoming PRACK request |
| 2806 | * @param tags empty |
| 2807 | * |
| 2808 | * @sa nua_prack(), #nua_r_prack, @RFC3262, NUTAG_EARLY_MEDIA() |
| 2809 | * |
| 2810 | * @END_NUA_EVENT |
| 2811 | */ |
| 2812 | |
| 2813 | int nua_prack_server_init(nua_server_request_t *sr); |
| 2814 | int nua_prack_server_respond(nua_server_request_t *sr, tagi_t const *tags); |
| 2815 | int nua_prack_server_report(nua_server_request_t *sr, tagi_t const *tags); |
| 2816 | |
| 2817 | nua_server_methods_t const nua_prack_server_methods = |
| 2818 | { |
| 2819 | SIP_METHOD_PRACKsip_method_prack, "PRACK", |
| 2820 | nua_i_prack, /* Event */ |
| 2821 | { |
| 2822 | 0, /* Do not create dialog */ |
| 2823 | 1, /* In-dialog request */ |
| 2824 | 1, /* Target refresh request */ |
| 2825 | 1, /* Add Contact */ |
| 2826 | }, |
| 2827 | nua_prack_server_init, |
| 2828 | nua_base_server_preprocess((void*)0), |
| 2829 | nua_base_server_params((void*)0), |
| 2830 | nua_prack_server_respond, |
| 2831 | nua_prack_server_report, |
| 2832 | }; |
| 2833 | |
| 2834 | /** @internal Process reliable response PRACK or (timeout from 100rel) */ |
| 2835 | static int process_prack(nua_server_request_t *sr, |
| 2836 | nta_reliable_t *rel, |
| 2837 | nta_incoming_t *irq, |
| 2838 | sip_t const *sip) |
| 2839 | { |
| 2840 | nua_handle_t *nh; |
| 2841 | |
| 2842 | nta_reliable_destroy(rel); |
| 2843 | |
| 2844 | if (irq == NULL((void*)0)) |
| 2845 | /* Final response interrupted 100rel, we did not actually receive PRACK */ |
| 2846 | return 200; |
| 2847 | |
| 2848 | sr->sr_pracked = 1; |
| 2849 | |
| 2850 | if (!nua_server_request_is_pending(sr)) /* There is no INVITE anymore */ |
| 2851 | return 481; |
| 2852 | |
| 2853 | nh = sr->sr_owner; |
| 2854 | |
| 2855 | if (nh->nh_ds->ds_leg == NULL((void*)0)) |
| 2856 | return 500; |
| 2857 | |
| 2858 | if (sip == NULL((void*)0)) { |
| 2859 | /* 100rel timeout */ |
| 2860 | SR_STATUS(sr, 504, "Reliable Response Timeout")((sr)->sr_phrase = ("Reliable Response Timeout"), (sr)-> sr_status = (504)); |
| 2861 | nua_stack_event(nh->nh_nua, nh, NULL((void*)0), nua_i_error, |
| 2862 | sr->sr_status, sr->sr_phrase, |
| 2863 | NULL((void*)0)); |
| 2864 | nua_server_trespond(sr, |
| 2865 | SIPTAG_REASON_STR("SIP;cause=504;"siptag_reason_str, tag_str_v("SIP;cause=504;" "text=\"PRACK Timeout\"" ) |
| 2866 | "text=\"PRACK Timeout\"")siptag_reason_str, tag_str_v("SIP;cause=504;" "text=\"PRACK Timeout\"" ), |
| 2867 | TAG_END()(tag_type_t)0, (tag_value_t)0); |
| 2868 | nua_server_report(sr); |
| 2869 | return 504; |
| 2870 | } |
| 2871 | |
| 2872 | nta_incoming_bind(irq, NULL((void*)0), (void *)sr); |
| 2873 | |
| 2874 | return nua_stack_process_request(nh, nh->nh_ds->ds_leg, irq, sip); |
| 2875 | } |
| 2876 | |
| 2877 | |
| 2878 | int nua_prack_server_init(nua_server_request_t *sr) |
| 2879 | { |
| 2880 | nua_handle_t *nh = sr->sr_owner; |
| 2881 | nua_server_request_t *sri = nta_incoming_magic(sr->sr_irq, NULL((void*)0)); |
| 2882 | |
| 2883 | if (sri == NULL((void*)0)) |
| 2884 | return SR_STATUS(sr, 481, "No Such Preliminary Response")((sr)->sr_phrase = ("No Such Preliminary Response"), (sr)-> sr_status = (481)); |
| 2885 | |
| 2886 | if (nua_session_server_init(sr)) |
| 2887 | return sr->sr_status; |
| 2888 | |
| 2889 | if (sr->sr_sdp) { |
| 2890 | nua_session_usage_t *ss = NUA_DIALOG_USAGE_PRIVATE(sr->sr_usage)((void *)((sr->sr_usage) + 1)); |
| 2891 | char const *offeranswer; |
| 2892 | |
| 2893 | /* XXX - check for overlap? */ |
| 2894 | |
| 2895 | if (sri->sr_offer_sent && !sri->sr_answer_recv) |
| 2896 | sr->sr_answer_recv = 1, sri->sr_answer_recv = 1, offeranswer = Answer; |
| 2897 | else |
| 2898 | sr->sr_offer_recv = 1, offeranswer = Offer; |
| 2899 | |
| 2900 | ss->ss_oa_recv = offeranswer; |
| 2901 | |
| 2902 | if (nh->nh_soa && |
| 2903 | soa_set_remote_sdp(nh->nh_soa, NULL((void*)0), sr->sr_sdp, sr->sr_sdp_len) < 0) { |
| 2904 | SU_DEBUG_5(("nua(%p): %s server: error parsing %s\n", (void *)nh,((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 2905, "nua(%p): %s server: error parsing %s\n" , (void *)nh, "PRACK", offeranswer)) : (void)0) |
| 2905 | "PRACK", offeranswer))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 2905, "nua(%p): %s server: error parsing %s\n" , (void *)nh, "PRACK", offeranswer)) : (void)0); |
| 2906 | return |
| 2907 | sr->sr_status = soa_error_as_sip_response(nh->nh_soa, &sr->sr_phrase); |
| 2908 | } |
| 2909 | } |
| 2910 | |
| 2911 | return 0; |
| 2912 | } |
| 2913 | |
| 2914 | int nua_prack_server_respond(nua_server_request_t *sr, tagi_t const *tags) |
| 2915 | { |
| 2916 | nua_handle_t *nh = sr->sr_owner; |
| 2917 | |
| 2918 | if (sr->sr_status < 200 || 300 <= sr->sr_status) |
| 2919 | return nua_base_server_respond(sr, tags); |
| 2920 | |
| 2921 | if (sr->sr_sdp) { |
| 2922 | nua_session_usage_t *ss = nua_dialog_usage_private(sr->sr_usage)((sr->sr_usage) ? (void*)((sr->sr_usage) + 1) : ((void* )0)); |
| 2923 | msg_t *msg = sr->sr_response.msg; |
| 2924 | sip_t *sip = sr->sr_response.sip; |
| 2925 | |
| 2926 | if (nh->nh_soa == NULL((void*)0)) { |
| 2927 | if (sr->sr_offer_recv && session_get_description(sip, NULL((void*)0), NULL((void*)0))) |
| 2928 | sr->sr_answer_sent = 1, ss ? ss->ss_oa_sent = Answer : Answer; |
| 2929 | } |
| 2930 | else if ((sr->sr_offer_recv && soa_generate_answer(nh->nh_soa, NULL((void*)0)) < 0) || |
| 2931 | (sr->sr_answer_recv && soa_process_answer(nh->nh_soa, NULL((void*)0)) < 0)) { |
| 2932 | SU_DEBUG_5(("nua(%p): %s server: %s %s\n",((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 2935, "nua(%p): %s server: %s %s\n" , (void *)nh, "PRACK", "error processing", sr->sr_offer_recv ? Offer : Answer)) : (void)0) |
| 2933 | (void *)nh, "PRACK",((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 2935, "nua(%p): %s server: %s %s\n" , (void *)nh, "PRACK", "error processing", sr->sr_offer_recv ? Offer : Answer)) : (void)0) |
| 2934 | "error processing",((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 2935, "nua(%p): %s server: %s %s\n" , (void *)nh, "PRACK", "error processing", sr->sr_offer_recv ? Offer : Answer)) : (void)0) |
| 2935 | sr->sr_offer_recv ? Offer : Answer))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 2935, "nua(%p): %s server: %s %s\n" , (void *)nh, "PRACK", "error processing", sr->sr_offer_recv ? Offer : Answer)) : (void)0); |
| 2936 | sr->sr_status = soa_error_as_sip_response(nh->nh_soa, &sr->sr_phrase); |
| 2937 | } |
| 2938 | else if (sr->sr_offer_recv) { |
| 2939 | if (session_include_description(nh->nh_soa, 1, msg, sip) < 0) |
| 2940 | sr_status(sr, SIP_500_INTERNAL_SERVER_ERROR500, sip_500_Internal_server_error); |
| 2941 | else |
| 2942 | sr->sr_answer_sent = 1, ss ? ss->ss_oa_sent = Answer : Answer; |
| 2943 | } |
| 2944 | } |
| 2945 | |
| 2946 | return nua_base_server_respond(sr, tags); |
| 2947 | } |
| 2948 | |
| 2949 | int nua_prack_server_report(nua_server_request_t *sr, tagi_t const *tags) |
| 2950 | { |
| 2951 | nua_handle_t *nh = sr->sr_owner; |
| 2952 | nua_session_usage_t *ss = nua_dialog_usage_private(sr->sr_usage)((sr->sr_usage) ? (void*)((sr->sr_usage) + 1) : ((void* )0)); |
| 2953 | nua_server_request_t *sri = nta_incoming_magic(sr->sr_irq, NULL((void*)0)); |
| 2954 | int status = sr->sr_status; char const *phrase = sr->sr_phrase; |
| 2955 | int offer_recv_or_answer_sent = sr->sr_offer_recv || sr->sr_answer_sent || sr->sr_offer_sent || sr->sr_answer_recv; |
| 2956 | int retval; |
| 2957 | |
| 2958 | retval = nua_base_server_report(sr, tags), sr = NULL((void*)0); /* destroys sr */ |
| 2959 | |
| 2960 | if (retval >= 2 || ss == NULL((void*)0)) { |
| 2961 | #if 0 |
| 2962 | signal_call_state_change(nh, NULL((void*)0), |
| 2963 | status, phrase, |
| 2964 | nua_callstate_terminated); |
| 2965 | #endif |
| 2966 | return retval; |
| 2967 | } |
| 2968 | |
| 2969 | if (offer_recv_or_answer_sent) { |
| 2970 | /* signal offer received, answer sent */ |
| 2971 | signal_call_state_change(nh, ss, |
| 2972 | status, phrase, |
| 2973 | ss->ss_state); |
| 2974 | if (nh->nh_soa) { |
| 2975 | soa_activate(nh->nh_soa, NULL((void*)0)); |
| 2976 | ss->ss_sdp_version = soa_get_user_version(nh->nh_soa); |
| 2977 | } |
| 2978 | } |
| 2979 | |
| 2980 | if (status < 200 || 300 <= status) |
| 2981 | return retval; |
| 2982 | |
| 2983 | assert(sri)((void) sizeof ((sri) ? 1 : 0), __extension__ ({ if (sri) ; else __assert_fail ("sri", "nua_session.c", 2983, __extension__ __PRETTY_FUNCTION__ ); })); |
| 2984 | |
| 2985 | if (sri == NULL((void*)0)) { |
| 2986 | |
| 2987 | } |
| 2988 | else if (SR_HAS_SAVED_SIGNAL(sri)((sri)->sr_signal[0] != ((void*)0))) { |
| 2989 | nua_signal_data_t const *e; |
| 2990 | |
| 2991 | e = nua_signal_data(sri->sr_signal); |
| 2992 | |
| 2993 | sri->sr_application = SR_STATUS(sri, e->e_status, e->e_phrase)((sri)->sr_phrase = (e->e_phrase), (sri)->sr_status = (e->e_status)); |
| 2994 | |
| 2995 | nua_server_params(sri, e->e_tags); |
| 2996 | nua_server_respond(sri, e->e_tags); |
| 2997 | nua_server_report(sri); |
| 2998 | } |
| 2999 | else if (ss->ss_state < nua_callstate_ready |
| 3000 | && !ss->ss_alerting |
| 3001 | && !ss->ss_precondition |
| 3002 | && NH_PGET(nh, auto_alert)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_auto_alert ? ( (nh)->nh_prefs)->nhp_auto_alert : ((nh)->nh_nua-> nua_handles->nh_prefs)->nhp_auto_alert)) { |
| 3003 | SR_STATUS1(sri, SIP_180_RINGING)sr_status(sri, 180, sip_180_Ringing); |
| 3004 | nua_server_respond(sri, NULL((void*)0)); |
| 3005 | nua_server_report(sri); |
| 3006 | } |
| 3007 | |
| 3008 | return retval; |
| 3009 | } |
| 3010 | |
| 3011 | /* ---------------------------------------------------------------------- */ |
| 3012 | /* Automatic notifications from a referral */ |
| 3013 | |
| 3014 | static int |
| 3015 | nh_referral_check(nua_handle_t *nh, tagi_t const *tags) |
| 3016 | { |
| 3017 | sip_event_t const *event = NULL((void*)0); |
| 3018 | int pause = 1; |
| 3019 | struct nua_referral *ref = nh->nh_referral; |
| 3020 | nua_handle_t *ref_handle = ref->ref_handle; |
| 3021 | |
| 3022 | if (!ref_handle |
| 3023 | && |
| 3024 | tl_gets(tags, |
| 3025 | NUTAG_NOTIFY_REFER_REF(ref_handle)nutag_notify_refer_ref, nutag_handle_vr(&(ref_handle)), |
| 3026 | NUTAG_REFER_EVENT_REF(event)nutag_refer_event_ref, siptag_event_vr(&(event)), |
| 3027 | NUTAG_REFER_PAUSE_REF(pause)nutag_refer_pause_ref, tag_bool_vr(&(pause)), |
| 3028 | TAG_END()(tag_type_t)0, (tag_value_t)0) == 0 |
| 3029 | && |
| 3030 | tl_gets(nh->nh_tags, |
| 3031 | NUTAG_NOTIFY_REFER_REF(ref_handle)nutag_notify_refer_ref, nutag_handle_vr(&(ref_handle)), |
| 3032 | NUTAG_REFER_EVENT_REF(event)nutag_refer_event_ref, siptag_event_vr(&(event)), |
| 3033 | NUTAG_REFER_PAUSE_REF(pause)nutag_refer_pause_ref, tag_bool_vr(&(pause)), |
| 3034 | TAG_END()(tag_type_t)0, (tag_value_t)0) == 0) |
| 3035 | return 0; |
| 3036 | |
| 3037 | if (!ref_handle) |
| 3038 | return 0; |
| 3039 | |
| 3040 | /* Remove nh_referral and nh_notevent */ |
| 3041 | tl_tremove(nh->nh_tags, |
| 3042 | NUTAG_NOTIFY_REFER(ref_handle)nutag_notify_refer, nutag_handle_v(ref_handle), |
| 3043 | TAG_IF(event, NUTAG_REFER_EVENT(event))!(event) ? tag_skip : nutag_refer_event, siptag_event_v(event ), |
| 3044 | TAG_END()(tag_type_t)0, (tag_value_t)0); |
| 3045 | |
| 3046 | if (event) |
| 3047 | ref->ref_event = sip_event_dup(nh->nh_home, event); |
| 3048 | |
| 3049 | if (!nh_validate(nh->nh_nua, ref_handle)) { |
| 3050 | SU_DEBUG_3(("nua: invalid NOTIFY_REFER handle\n" VA_NONE))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 3050, "nua: invalid NOTIFY_REFER handle\n" "%s", "")) : (void)0); |
| 3051 | return -1; |
| 3052 | } |
| 3053 | else if (!ref->ref_event) { |
| 3054 | SU_DEBUG_3(("nua: NOTIFY event missing\n" VA_NONE))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 3054, "nua: NOTIFY event missing\n" "%s", "")) : (void)0); |
| 3055 | return -1; |
| 3056 | } |
| 3057 | |
| 3058 | if (ref_handle != ref->ref_handle) { |
| 3059 | if (ref->ref_handle) |
| 3060 | nua_handle_unref(ref->ref_handle); |
| 3061 | ref->ref_handle = nua_handle_ref(ref_handle); |
| 3062 | } |
| 3063 | |
| 3064 | #if 0 |
| 3065 | if (pause) { |
| 3066 | /* Pause media on REFER handle */ |
| 3067 | nmedia_pause(nua, ref_handle->nh_nm, NULL((void*)0)); |
| 3068 | } |
| 3069 | #endif |
| 3070 | |
| 3071 | return 0; |
| 3072 | } |
| 3073 | |
| 3074 | static void |
| 3075 | nh_referral_respond(nua_handle_t *nh, int status, char const *phrase) |
| 3076 | { |
| 3077 | char payload[128]; |
| 3078 | char const *substate; |
| 3079 | struct nua_referral *ref = nh->nh_referral; |
| 3080 | |
| 3081 | if (!nh_validate(nh->nh_nua, ref->ref_handle)) { |
| 3082 | if (ref) { |
| 3083 | if (ref->ref_handle) |
| 3084 | SU_DEBUG_1(("nh_handle_referral: stale referral handle %p\n",((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 1 ? (_su_llog((nua_log), 1, "nua_session.c" , (const char *)__func__, 3085, "nh_handle_referral: stale referral handle %p\n" , (void *)ref->ref_handle)) : (void)0) |
| 3085 | (void *)ref->ref_handle))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 1 ? (_su_llog((nua_log), 1, "nua_session.c" , (const char *)__func__, 3085, "nh_handle_referral: stale referral handle %p\n" , (void *)ref->ref_handle)) : (void)0); |
| 3086 | ref->ref_handle = NULL((void*)0); |
| 3087 | } |
| 3088 | return; |
| 3089 | } |
| 3090 | |
| 3091 | /* XXX - we should have a policy here whether to send 101..199 */ |
| 3092 | |
| 3093 | assert(ref->ref_event)((void) sizeof ((ref->ref_event) ? 1 : 0), __extension__ ( { if (ref->ref_event) ; else __assert_fail ("ref->ref_event" , "nua_session.c", 3093, __extension__ __PRETTY_FUNCTION__); } )); |
| 3094 | |
| 3095 | if (status >= 300) |
| 3096 | status = 503, phrase = sip_503_Service_unavailable; |
| 3097 | |
| 3098 | snprintf(payload, sizeof(payload), "SIP/2.0 %03u %s\r\n", status, phrase); |
| 3099 | |
| 3100 | if (status < 200) |
| 3101 | substate = "active"; |
| 3102 | else |
| 3103 | substate = "terminated ;reason=noresource"; |
| 3104 | |
| 3105 | nua_stack_post_signal(ref->ref_handle, |
| 3106 | nua_r_notify, |
| 3107 | SIPTAG_EVENT(ref->ref_event)siptag_event, siptag_event_v(ref->ref_event), |
| 3108 | SIPTAG_SUBSCRIPTION_STATE_STR(substate)siptag_subscription_state_str, tag_str_v(substate), |
| 3109 | SIPTAG_CONTENT_TYPE_STR("message/sipfrag")siptag_content_type_str, tag_str_v("message/sipfrag"), |
| 3110 | SIPTAG_PAYLOAD_STR(payload)siptag_payload_str, tag_str_v(payload), |
| 3111 | TAG_END()(tag_type_t)0, (tag_value_t)0); |
| 3112 | |
| 3113 | if (status < 200) |
| 3114 | return; |
| 3115 | |
| 3116 | su_free(nh->nh_home, ref->ref_event), ref->ref_event = NULL((void*)0); |
| 3117 | |
| 3118 | nua_handle_unref(ref->ref_handle), ref->ref_handle = NULL((void*)0); |
| 3119 | } |
| 3120 | |
| 3121 | /* ======================================================================== */ |
| 3122 | /* INFO */ |
| 3123 | |
| 3124 | /**@fn void nua_info(nua_handle_t *nh, tag_type_t tag, tag_value_t value, ...); |
| 3125 | * |
| 3126 | * Send an INFO request. |
| 3127 | * |
| 3128 | * INFO is used to send call related information like DTMF |
| 3129 | * digit input events. See @RFC2976. |
| 3130 | * |
| 3131 | * @param nh Pointer to operation handle |
| 3132 | * @param tag, value, ... List of tagged parameters |
| 3133 | * |
| 3134 | * @return |
| 3135 | * nothing |
| 3136 | * |
| 3137 | * @par Related Tags: |
| 3138 | * Header tags defined in <sofia-sip/sip_tag.h>. |
| 3139 | * |
| 3140 | * @par Events: |
| 3141 | * #nua_r_info |
| 3142 | * |
| 3143 | * @sa #nua_i_info |
| 3144 | */ |
| 3145 | |
| 3146 | nua_client_methods_t const nua_info_client_methods = { |
| 3147 | SIP_METHOD_INFOsip_method_info, "INFO", /* crm_method, crm_method_name */ |
| 3148 | 0, /* crm_extra */ |
| 3149 | { /* crm_flags */ |
| 3150 | /* create_dialog */ 0, |
| 3151 | /* in_dialog */ 1, |
| 3152 | /* target refresh */ 0 |
| 3153 | }, |
| 3154 | NULL((void*)0), /* crm_template */ |
| 3155 | NULL((void*)0), /* crm_init */ |
| 3156 | NULL((void*)0), /* crm_send */ |
| 3157 | NULL((void*)0), /* crm_check_restart */ |
| 3158 | NULL((void*)0), /* crm_recv */ |
| 3159 | NULL((void*)0), /* crm_preliminary */ |
| 3160 | NULL((void*)0), /* crm_report */ |
| 3161 | NULL((void*)0), /* crm_complete */ |
| 3162 | }; |
| 3163 | |
| 3164 | int |
| 3165 | nua_stack_info(nua_t *nua, nua_handle_t *nh, nua_event_t e, tagi_t const *tags) |
| 3166 | { |
| 3167 | return nua_client_create(nh, e, &nua_info_client_methods, tags); |
| 3168 | } |
| 3169 | |
| 3170 | /** @NUA_EVENT nua_r_info |
| 3171 | * |
| 3172 | * Response to an outgoing @b INFO request. |
| 3173 | * |
| 3174 | * @param status response status code |
| 3175 | * (if the request is retried, @a status is 100, the @a |
| 3176 | * sip->sip_status->st_status contain the real status code |
| 3177 | * from the response message, e.g., 302, 401, or 407) |
| 3178 | * @param phrase a short textual description of @a status code |
| 3179 | * @param nh operation handle associated with the call |
| 3180 | * @param hmagic application context associated with the call |
| 3181 | * @param sip response to @b INFO or NULL upon an error |
| 3182 | * (status code is in @a status and |
| 3183 | * descriptive message in @a phrase parameters) |
| 3184 | * @param tags empty |
| 3185 | * |
| 3186 | * @sa nua_info(), #nua_i_info, @RFC2976 |
| 3187 | * |
| 3188 | * @END_NUA_EVENT |
| 3189 | */ |
| 3190 | |
| 3191 | /** @NUA_EVENT nua_i_info |
| 3192 | * |
| 3193 | * Incoming session INFO request. |
| 3194 | * |
| 3195 | * @param status statuscode of response sent automatically by stack |
| 3196 | * @param phrase a short textual description of @a status code |
| 3197 | * @param nh operation handle associated with the call |
| 3198 | * @param hmagic application context associated with the call |
| 3199 | * @param sip incoming INFO request |
| 3200 | * @param tags empty |
| 3201 | * |
| 3202 | * @sa nua_info(), #nua_r_info, @RFC2976 |
| 3203 | * |
| 3204 | * @END_NUA_EVENT |
| 3205 | */ |
| 3206 | |
| 3207 | nua_server_methods_t const nua_info_server_methods = |
| 3208 | { |
| 3209 | SIP_METHOD_INFOsip_method_info, "INFO", |
| 3210 | nua_i_info, /* Event */ |
| 3211 | { |
| 3212 | 0, /* Do not create dialog */ |
| 3213 | 0, /* Allow outside dialog, too */ |
| 3214 | 0, /* Not a target refresh request */ |
| 3215 | 0, /* Do not add Contact */ |
| 3216 | }, |
| 3217 | nua_base_server_init((void*)0), |
| 3218 | nua_base_server_preprocess((void*)0), |
| 3219 | nua_base_server_params((void*)0), |
| 3220 | nua_base_server_respond, |
| 3221 | nua_base_server_report, |
| 3222 | }; |
| 3223 | |
| 3224 | /* ======================================================================== */ |
| 3225 | /* UPDATE */ |
| 3226 | |
| 3227 | /**@fn void nua_update(nua_handle_t *nh, tag_type_t tag, tag_value_t value, ...); |
| 3228 | * |
| 3229 | * Update a session. |
| 3230 | * |
| 3231 | * Update a session using SIP UPDATE method. See @RFC3311. |
| 3232 | * |
| 3233 | * Update method can be used when the session has been established with |
| 3234 | * INVITE. It's mainly used during the session establishment when |
| 3235 | * preconditions are used (@RFC3312). It can be also used during the call if |
| 3236 | * no user input is needed for offer/answer negotiation. |
| 3237 | * |
| 3238 | * @param nh Pointer to operation handle |
| 3239 | * @param tag, value, ... List of tagged parameters |
| 3240 | * |
| 3241 | * @return |
| 3242 | * nothing |
| 3243 | * |
| 3244 | * @par Related Tags: |
| 3245 | * same as nua_invite() |
| 3246 | * |
| 3247 | * @par Events: |
| 3248 | * #nua_r_update \n |
| 3249 | * #nua_i_state (#nua_i_active, #nua_i_terminated)\n |
| 3250 | * #nua_i_media_error \n |
| 3251 | * |
| 3252 | * @sa @ref nua_call_model, @RFC3311, nua_update(), #nua_i_update |
| 3253 | */ |
| 3254 | |
| 3255 | static int nua_update_client_init(nua_client_request_t *cr, |
| 3256 | msg_t *msg, sip_t *sip, |
| 3257 | tagi_t const *tags); |
| 3258 | static int nua_update_client_request(nua_client_request_t *cr, |
| 3259 | msg_t *msg, sip_t *sip, |
| 3260 | tagi_t const *tags); |
| 3261 | static int nua_update_client_response(nua_client_request_t *cr, |
| 3262 | int status, char const *phrase, |
| 3263 | sip_t const *sip); |
| 3264 | static int nua_update_client_report(nua_client_request_t *cr, |
| 3265 | int status, char const *phrase, |
| 3266 | sip_t const *sip, |
| 3267 | nta_outgoing_t *orq, |
| 3268 | tagi_t const *tags); |
| 3269 | |
| 3270 | nua_client_methods_t const nua_update_client_methods = { |
| 3271 | SIP_METHOD_UPDATEsip_method_update, "UPDATE", /* crm_method, crm_method_name */ |
| 3272 | 0, /* crm_extrasize of private data */ |
| 3273 | { /* crm_flags */ |
| 3274 | /* create_dialog */ 0, |
| 3275 | /* in_dialog */ 1, |
| 3276 | /* target refresh */ 1 |
| 3277 | }, |
| 3278 | NULL((void*)0), /* crm_template */ |
| 3279 | nua_update_client_init, /* crm_init */ |
| 3280 | nua_update_client_request, /* crm_send */ |
| 3281 | session_timer_check_restart, /* crm_check_restart */ |
| 3282 | nua_update_client_response, /* crm_recv */ |
| 3283 | NULL((void*)0), /* crm_preliminary */ |
| 3284 | nua_update_client_report, /* crm_report */ |
| 3285 | NULL((void*)0), /* crm_complete */ |
| 3286 | }; |
| 3287 | |
| 3288 | int nua_stack_update(nua_t *nua, nua_handle_t *nh, nua_event_t e, |
| 3289 | tagi_t const *tags) |
| 3290 | { |
| 3291 | return nua_client_create(nh, e, &nua_update_client_methods, tags); |
| 3292 | } |
| 3293 | |
| 3294 | static int nua_update_client_init(nua_client_request_t *cr, |
| 3295 | msg_t *msg, sip_t *sip, |
| 3296 | tagi_t const *tags) |
| 3297 | { |
| 3298 | nua_handle_t *nh = cr->cr_owner; |
| 3299 | nua_dialog_usage_t *du = nua_dialog_usage_for_session(nh->nh_ds); |
| 3300 | |
| 3301 | cr->cr_usage = du; |
| 3302 | |
| 3303 | return 0; |
| 3304 | } |
| 3305 | |
| 3306 | static int nua_update_client_request(nua_client_request_t *cr, |
| 3307 | msg_t *msg, sip_t *sip, |
| 3308 | tagi_t const *tags) |
| 3309 | { |
| 3310 | nua_handle_t *nh = cr->cr_owner; |
| 3311 | nua_dialog_usage_t *du = cr->cr_usage; |
| 3312 | nua_session_usage_t *ss; |
| 3313 | nua_server_request_t *sr; |
| 3314 | nua_client_request_t *cri; |
| 3315 | int offer_sent = 0, retval; |
| 3316 | |
| 3317 | if (du == NULL((void*)0)) /* Call terminated */ |
| 3318 | return nua_client_return(cr, SIP_481_NO_TRANSACTION481, sip_481_No_transaction, msg); |
| 3319 | |
| 3320 | ss = NUA_DIALOG_USAGE_PRIVATE(du)((void *)((du) + 1)); |
| 3321 | if (ss->ss_state >= nua_callstate_terminating) |
| 3322 | return nua_client_return(cr, 900, "Session is terminating", msg); |
| 3323 | |
| 3324 | cri = du->du_cr; |
| 3325 | |
| 3326 | for (sr = nh->nh_ds->ds_sr; sr; sr = sr->sr_next) |
| 3327 | if ((sr->sr_offer_sent && !sr->sr_answer_recv) || |
| 3328 | (sr->sr_offer_recv && !sr->sr_answer_sent)) |
| 3329 | break; |
| 3330 | |
| 3331 | if (nh->nh_soa == NULL((void*)0)) { |
| 3332 | offer_sent = session_get_description(sip, NULL((void*)0), NULL((void*)0)); |
| 3333 | } |
| 3334 | else if (sr || |
| 3335 | (cri && cri->cr_offer_sent && !cri->cr_answer_recv) || |
| 3336 | (cri && cri->cr_offer_recv && !cri->cr_answer_sent)) { |
| 3337 | if (session_get_description(sip, NULL((void*)0), NULL((void*)0))) |
| 3338 | return nua_client_return(cr, 500, "Overlapping Offer/Answer", msg); |
| 3339 | } |
| 3340 | else if (!sip->sip_payload) { |
| 3341 | soa_init_offer_answer(nh->nh_soa); |
| 3342 | |
| 3343 | if (soa_generate_offer(nh->nh_soa, 0, NULL((void*)0)) < 0 || |
| 3344 | session_include_description(nh->nh_soa, 1, msg, sip) < 0) { |
| 3345 | if (ss->ss_state < nua_callstate_ready) { |
| 3346 | /* XXX - use soa_error_as_sip_reason(nh->nh_soa) */ |
| 3347 | cr->cr_graceful = 1; |
| 3348 | ss->ss_reason = "SIP;cause=400;text=\"Local media failure\""; |
| 3349 | } |
| 3350 | return nua_client_return(cr, 900, "Local media failed", msg); |
| 3351 | } |
| 3352 | offer_sent = 1; |
| 3353 | } |
| 3354 | |
| 3355 | /* Add session timer headers */ |
| 3356 | session_timer_preferences(ss->ss_timer, |
| 3357 | sip, |
| 3358 | NH_PGET(nh, supported)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_supported ? (( nh)->nh_prefs)->nhp_supported : ((nh)->nh_nua->nua_handles ->nh_prefs)->nhp_supported), |
| 3359 | NH_PGET(nh, session_timer)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_session_timer ? ((nh)->nh_prefs)->nhp_session_timer : ((nh)->nh_nua ->nua_handles->nh_prefs)->nhp_session_timer), |
| 3360 | NUA_PISSET(nh->nh_nua, nh, session_timer)((((nh->nh_nua)->nua_handles->nh_prefs)->nhp_set_ .set_bits.nhb_session_timer) || ((nh) && (((nh)->nh_prefs )->nhp_set_.set_bits.nhb_session_timer))), |
| 3361 | NH_PGET(nh, refresher)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_refresher ? (( nh)->nh_prefs)->nhp_refresher : ((nh)->nh_nua->nua_handles ->nh_prefs)->nhp_refresher), |
| 3362 | NH_PGET(nh, min_se)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_min_se ? ((nh) ->nh_prefs)->nhp_min_se : ((nh)->nh_nua->nua_handles ->nh_prefs)->nhp_min_se)); |
| 3363 | |
| 3364 | if (session_timer_is_supported(ss->ss_timer)) |
| 3365 | session_timer_add_headers(ss->ss_timer, ss->ss_state < nua_callstate_ready, |
| 3366 | msg, sip, nh); |
| 3367 | |
| 3368 | retval = nua_base_client_request(cr, msg, sip, NULL((void*)0)); |
| 3369 | |
| 3370 | if (retval == 0) { |
| 3371 | enum nua_callstate state = ss->ss_state; |
| 3372 | cr->cr_offer_sent = offer_sent; |
| 3373 | ss->ss_update_needed = 0; |
| 3374 | |
| 3375 | if (state == nua_callstate_ready) |
| 3376 | state = nua_callstate_calling; /* XXX */ |
| 3377 | |
| 3378 | if (offer_sent) |
| 3379 | ss->ss_oa_sent = Offer; |
| 3380 | |
| 3381 | if (!cr->cr_restarting) /* Restart logic calls nua_update_client_report */ |
| 3382 | signal_call_state_change(nh, ss, 0, "UPDATE sent", state); |
| 3383 | } |
| 3384 | |
| 3385 | return retval; |
| 3386 | } |
| 3387 | |
| 3388 | static int nua_update_client_response(nua_client_request_t *cr, |
| 3389 | int status, char const *phrase, |
| 3390 | sip_t const *sip) |
| 3391 | { |
| 3392 | nua_handle_t *nh = cr->cr_owner; |
| 3393 | nua_dialog_usage_t *du = cr->cr_usage; |
| 3394 | nua_session_usage_t *ss = nua_dialog_usage_private(du)((du) ? (void*)((du) + 1) : ((void*)0)); |
| 3395 | int uas; |
| 3396 | |
| 3397 | assert(200 <= status)((void) sizeof ((200 <= status) ? 1 : 0), __extension__ ({ if (200 <= status) ; else __assert_fail ("200 <= status" , "nua_session.c", 3397, __extension__ __PRETTY_FUNCTION__); } )); |
| 3398 | |
| 3399 | if (ss && sip && status < 300) { |
| 3400 | if (session_timer_is_supported(ss->ss_timer)) { |
| 3401 | nua_server_request_t *sr; |
| 3402 | |
| 3403 | for (sr = nh->nh_ds->ds_sr; sr; sr = sr->sr_next) |
| 3404 | if (sr->sr_method == sip_method_invite || |
| 3405 | sr->sr_method == sip_method_update) |
| 3406 | break; |
| 3407 | |
| 3408 | if (!sr && (!du->du_cr || !du->du_cr->cr_orq)) { |
| 3409 | session_timer_store(ss->ss_timer, sip); |
| 3410 | session_timer_set(ss, uas = 0); |
| 3411 | } |
| 3412 | } |
| 3413 | } |
| 3414 | |
| 3415 | return nua_session_client_response(cr, status, phrase, sip); |
| 3416 | } |
| 3417 | |
| 3418 | /** @NUA_EVENT nua_r_update |
| 3419 | * |
| 3420 | * Answer to outgoing UPDATE. |
| 3421 | * |
| 3422 | * The UPDATE may be sent explicitly by nua_update() or |
| 3423 | * implicitly by NUA state machine. |
| 3424 | * |
| 3425 | * @param status response status code |
| 3426 | * (if the request is retried, @a status is 100, the @a |
| 3427 | * sip->sip_status->st_status contain the real status code |
| 3428 | * from the response message, e.g., 302, 401, or 407) |
| 3429 | * @param phrase a short textual description of @a status code |
| 3430 | * @param nh operation handle associated with the call |
| 3431 | * @param hmagic application context associated with the call |
| 3432 | * @param sip response to UPDATE request or NULL upon an error |
| 3433 | * (status code is in @a status and |
| 3434 | * descriptive message in @a phrase parameters) |
| 3435 | * @param tags empty |
| 3436 | * |
| 3437 | * @sa @ref nua_call_model, @RFC3311, nua_update(), #nua_i_update |
| 3438 | * |
| 3439 | * @END_NUA_EVENT |
| 3440 | */ |
| 3441 | |
| 3442 | static int nua_update_client_report(nua_client_request_t *cr, |
| 3443 | int status, char const *phrase, |
| 3444 | sip_t const *sip, |
| 3445 | nta_outgoing_t *orq, |
| 3446 | tagi_t const *tags) |
| 3447 | { |
| 3448 | nua_handle_t *nh = cr->cr_owner; |
| 3449 | nua_dialog_usage_t *du = cr->cr_usage; |
| 3450 | nua_session_usage_t *ss = nua_dialog_usage_private(du)((du) ? (void*)((du) + 1) : ((void*)0)); |
| 3451 | |
| 3452 | nua_stack_event(nh->nh_nua, nh, |
| 3453 | nta_outgoing_getresponse(orq), |
| 3454 | (enum nua_event_e)cr->cr_event, |
| 3455 | status, phrase, |
| 3456 | tags); |
| 3457 | |
| 3458 | if (!ss || cr->cr_terminated || cr->cr_graceful || cr->cr_waiting) |
| 3459 | return 1; |
| 3460 | |
| 3461 | if (cr->cr_offer_sent) { |
| 3462 | unsigned next_state = ss->ss_state; |
| 3463 | |
| 3464 | if (status < 200) |
| 3465 | ; |
| 3466 | else if (nua_invite_client_should_ack(du->du_cr)) { |
| 3467 | /* There is an un-ACK-ed INVITE there */ |
| 3468 | assert(du->du_cr->cr_method == sip_method_invite)((void) sizeof ((du->du_cr->cr_method == sip_method_invite ) ? 1 : 0), __extension__ ({ if (du->du_cr->cr_method == sip_method_invite) ; else __assert_fail ("du->du_cr->cr_method == sip_method_invite" , "nua_session.c", 3468, __extension__ __PRETTY_FUNCTION__); } )); |
| 3469 | |
| 3470 | if (NH_PGET(nh, auto_ack)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_auto_ack ? ((nh )->nh_prefs)->nhp_auto_ack : ((nh)->nh_nua->nua_handles ->nh_prefs)->nhp_auto_ack) || |
| 3471 | /* Auto-ACK response to re-INVITE when media is enabled |
| 3472 | and auto_ack is not set to 0 on handle */ |
| 3473 | (ss->ss_state == nua_callstate_ready && nh->nh_soa && |
| 3474 | !NH_PISSET(nh, auto_ack)((((nh)->nh_prefs)->nhp_set_.set_bits.nhb_auto_ack) && (nh)->nh_nua->nua_handles->nh_prefs != (nh)->nh_prefs ))) { |
| 3475 | if (nua_invite_client_ack(du->du_cr, NULL((void*)0)) > 0) |
| 3476 | next_state = nua_callstate_ready; |
| 3477 | else |
| 3478 | next_state = nua_callstate_terminating; |
| 3479 | } |
| 3480 | } |
| 3481 | |
| 3482 | signal_call_state_change(nh, ss, status, phrase, (enum nua_callstate)next_state); |
| 3483 | } |
| 3484 | |
| 3485 | return 1; |
| 3486 | } |
| 3487 | |
| 3488 | /* ---------------------------------------------------------------------- */ |
| 3489 | /* UPDATE server */ |
| 3490 | |
| 3491 | int nua_update_server_init(nua_server_request_t *sr); |
| 3492 | int nua_update_server_respond(nua_server_request_t *sr, tagi_t const *tags); |
| 3493 | int nua_update_server_report(nua_server_request_t *, tagi_t const *); |
| 3494 | |
| 3495 | nua_server_methods_t const nua_update_server_methods = |
| 3496 | { |
| 3497 | SIP_METHOD_UPDATEsip_method_update, "UPDATE", |
| 3498 | nua_i_update, /* Event */ |
| 3499 | { |
| 3500 | 0, /* Do not create dialog */ |
| 3501 | 1, /* In-dialog request */ |
| 3502 | 1, /* Target refresh request */ |
| 3503 | 1, /* Add Contact */ |
| 3504 | }, |
| 3505 | nua_update_server_init, |
| 3506 | nua_base_server_preprocess((void*)0), |
| 3507 | nua_base_server_params((void*)0), |
| 3508 | nua_update_server_respond, |
| 3509 | nua_update_server_report, |
| 3510 | }; |
| 3511 | |
| 3512 | int nua_update_server_init(nua_server_request_t *sr) |
| 3513 | { |
| 3514 | nua_handle_t *nh = sr->sr_owner; |
| 3515 | nua_session_usage_t *ss; |
| 3516 | |
| 3517 | sip_t const *request = sr->sr_request.sip; |
| 3518 | |
| 3519 | if (nua_session_server_init(sr)) |
| 3520 | return sr->sr_status; |
| 3521 | |
| 3522 | ss = nua_dialog_usage_private(sr->sr_usage)((sr->sr_usage) ? (void*)((sr->sr_usage) + 1) : ((void* )0)); |
| 3523 | |
| 3524 | /* Do session timer negotiation */ |
| 3525 | if (request->sip_session_expires) |
| 3526 | session_timer_store(ss->ss_timer, request); |
| 3527 | |
| 3528 | if (sr->sr_sdp) { /* Check for overlap */ |
| 3529 | nua_client_request_t *cr; |
| 3530 | nua_server_request_t *sr0; |
| 3531 | int overlap = 0; |
| 3532 | |
| 3533 | /* |
| 3534 | A UAS that receives an UPDATE before it has generated a final |
| 3535 | response to a previous UPDATE on the same dialog MUST return a 500 |
| 3536 | response to the new UPDATE, and MUST include a Retry-After header |
| 3537 | field with a randomly chosen value between 0 and 10 seconds. |
| 3538 | |
| 3539 | If an UPDATE is received that contains an offer, and the UAS has |
| 3540 | generated an offer (in an UPDATE, PRACK or INVITE) to which it has |
| 3541 | not yet received an answer, the UAS MUST reject the UPDATE with a 491 |
| 3542 | response. Similarly, if an UPDATE is received that contains an |
| 3543 | offer, and the UAS has received an offer (in an UPDATE, PRACK, or |
| 3544 | INVITE) to which it has not yet generated an answer, the UAS MUST |
| 3545 | reject the UPDATE with a 500 response, and MUST include a Retry-After |
| 3546 | header field with a randomly chosen value between 0 and 10 seconds. |
| 3547 | */ |
| 3548 | for (cr = nh->nh_ds->ds_cr; cr; cr = cr->cr_next) |
| 3549 | if ((overlap = cr->cr_offer_sent && !cr->cr_answer_recv)) |
| 3550 | break; |
| 3551 | |
| 3552 | if (!overlap) |
| 3553 | for (sr0 = nh->nh_ds->ds_sr; sr0; sr0 = sr0->sr_next) |
| 3554 | if ((overlap = sr0->sr_offer_recv && !sr0->sr_answer_sent)) |
| 3555 | break; |
| 3556 | |
| 3557 | if (nh->nh_soa && overlap) { |
| 3558 | return nua_server_retry_after(sr, 500, "Overlapping Offer/Answer", 1, 9); |
| 3559 | } |
| 3560 | |
| 3561 | if (nh->nh_soa && |
| 3562 | soa_set_remote_sdp(nh->nh_soa, NULL((void*)0), sr->sr_sdp, sr->sr_sdp_len) < 0) { |
| 3563 | SU_DEBUG_5(("nua(%p): %s server: error parsing %s\n", (void *)nh,((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 3564, "nua(%p): %s server: error parsing %s\n" , (void *)nh, "UPDATE", Offer)) : (void)0) |
| 3564 | "UPDATE", Offer))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 3564, "nua(%p): %s server: error parsing %s\n" , (void *)nh, "UPDATE", Offer)) : (void)0); |
| 3565 | return |
| 3566 | sr->sr_status = soa_error_as_sip_response(nh->nh_soa, &sr->sr_phrase); |
| 3567 | } |
| 3568 | |
| 3569 | sr->sr_offer_recv = 1; |
| 3570 | ss ? ss->ss_oa_recv = Offer : Offer; |
| 3571 | } |
| 3572 | |
| 3573 | return 0; |
| 3574 | } |
| 3575 | |
| 3576 | /** @internal Respond to an UPDATE request. |
| 3577 | * |
| 3578 | */ |
| 3579 | int nua_update_server_respond(nua_server_request_t *sr, tagi_t const *tags) |
| 3580 | { |
| 3581 | nua_handle_t *nh = sr->sr_owner; |
| 3582 | nua_session_usage_t *ss = nua_dialog_usage_private(sr->sr_usage)((sr->sr_usage) ? (void*)((sr->sr_usage) + 1) : ((void* )0)); |
| 3583 | msg_t *msg = sr->sr_response.msg; |
| 3584 | sip_t *sip = sr->sr_response.sip; |
| 3585 | |
| 3586 | if (200 <= sr->sr_status && sr->sr_status < 300 && sr->sr_sdp) { |
| 3587 | if (nh->nh_soa == NULL((void*)0)) { |
| 3588 | sr->sr_answer_sent = 1, ss ? ss->ss_oa_sent = Answer : Answer; |
| 3589 | } |
| 3590 | else if (soa_generate_answer(nh->nh_soa, NULL((void*)0)) < 0) { |
| 3591 | SU_DEBUG_5(("nua(%p): %s server: %s %s\n",((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 3592, "nua(%p): %s server: %s %s\n" , (void *)nh, "UPDATE", "error processing", Offer)) : (void)0 ) |
| 3592 | (void *)nh, "UPDATE", "error processing", Offer))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 3592, "nua(%p): %s server: %s %s\n" , (void *)nh, "UPDATE", "error processing", Offer)) : (void)0 ); |
| 3593 | sr->sr_status = soa_error_as_sip_response(nh->nh_soa, &sr->sr_phrase); |
| 3594 | } |
| 3595 | else if (soa_activate(nh->nh_soa, NULL((void*)0)) < 0) { |
| 3596 | SU_DEBUG_5(("nua(%p): %s server: error activating media\n",((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 3597, "nua(%p): %s server: error activating media\n" , (void *)nh, "UPDATE")) : (void)0) |
| 3597 | (void *)nh, "UPDATE"))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 3597, "nua(%p): %s server: error activating media\n" , (void *)nh, "UPDATE")) : (void)0); |
| 3598 | /* XXX */ |
| 3599 | } |
| 3600 | else if (session_include_description(nh->nh_soa, 1, msg, sip) < 0) { |
| 3601 | sr_status(sr, SIP_500_INTERNAL_SERVER_ERROR500, sip_500_Internal_server_error); |
| 3602 | } |
| 3603 | else { |
| 3604 | sr->sr_answer_sent = 1; |
| 3605 | if (ss) { |
| 3606 | ss->ss_oa_sent = Answer; |
| 3607 | ss->ss_sdp_version = soa_get_user_version(nh->nh_soa); |
| 3608 | } |
| 3609 | } |
| 3610 | } |
| 3611 | |
| 3612 | if (ss && 200 <= sr->sr_status && sr->sr_status < 300) { |
| 3613 | session_timer_preferences(ss->ss_timer, |
| 3614 | sip, |
| 3615 | NH_PGET(nh, supported)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_supported ? (( nh)->nh_prefs)->nhp_supported : ((nh)->nh_nua->nua_handles ->nh_prefs)->nhp_supported), |
| 3616 | NH_PGET(nh, session_timer)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_session_timer ? ((nh)->nh_prefs)->nhp_session_timer : ((nh)->nh_nua ->nua_handles->nh_prefs)->nhp_session_timer), |
| 3617 | NUA_PISSET(nh->nh_nua, nh, session_timer)((((nh->nh_nua)->nua_handles->nh_prefs)->nhp_set_ .set_bits.nhb_session_timer) || ((nh) && (((nh)->nh_prefs )->nhp_set_.set_bits.nhb_session_timer))), |
| 3618 | NH_PGET(nh, refresher)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_refresher ? (( nh)->nh_prefs)->nhp_refresher : ((nh)->nh_nua->nua_handles ->nh_prefs)->nhp_refresher), |
| 3619 | NH_PGET(nh, min_se)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_min_se ? ((nh) ->nh_prefs)->nhp_min_se : ((nh)->nh_nua->nua_handles ->nh_prefs)->nhp_min_se)); |
| 3620 | |
| 3621 | if (session_timer_is_supported(ss->ss_timer)) { |
| 3622 | nua_server_request_t *sr0; |
| 3623 | int uas; |
| 3624 | |
| 3625 | session_timer_add_headers(ss->ss_timer, 0, msg, sip, nh); |
| 3626 | |
| 3627 | for (sr0 = nh->nh_ds->ds_sr; sr0; sr0 = sr0->sr_next) |
| 3628 | if (sr0->sr_method == sip_method_invite) |
| 3629 | break; |
| 3630 | |
| 3631 | if (!sr0 && (!sr->sr_usage->du_cr || !sr->sr_usage->du_cr->cr_orq)) |
| 3632 | session_timer_set(ss, uas = 1); |
| 3633 | } |
| 3634 | } |
| 3635 | |
| 3636 | return nua_base_server_respond(sr, tags); |
| 3637 | } |
| 3638 | |
| 3639 | /** @NUA_EVENT nua_i_update |
| 3640 | * |
| 3641 | * @brief Incoming session UPDATE request. |
| 3642 | * |
| 3643 | * @param status statuscode of response sent automatically by stack |
| 3644 | * @param phrase a short textual description of @a status code |
| 3645 | * @param nh operation handle associated with the call |
| 3646 | * @param hmagic application context associated with the call |
| 3647 | * @param sip incoming UPDATE request |
| 3648 | * @param tags empty |
| 3649 | * |
| 3650 | * @sa nua_update(), #nua_r_update, #nua_i_state |
| 3651 | * |
| 3652 | * @END_NUA_EVENT |
| 3653 | */ |
| 3654 | |
| 3655 | int nua_update_server_report(nua_server_request_t *sr, tagi_t const *tags) |
| 3656 | { |
| 3657 | nua_handle_t *nh = sr->sr_owner; |
| 3658 | nua_dialog_usage_t *du = sr->sr_usage; |
| 3659 | nua_session_usage_t *ss = nua_dialog_usage_private(du)((du) ? (void*)((du) + 1) : ((void*)0)); |
| 3660 | int status = sr->sr_status; char const *phrase = sr->sr_phrase; |
| 3661 | int offer_recv_or_answer_sent = sr->sr_offer_recv || sr->sr_answer_sent; |
| 3662 | int retval; |
| 3663 | |
| 3664 | retval = nua_base_server_report(sr, tags), sr = NULL((void*)0); /* destroys sr */ |
| 3665 | |
| 3666 | if (retval >= 2 || ss == NULL((void*)0)) { |
| 3667 | #if 0 |
| 3668 | signal_call_state_change(nh, NULL((void*)0), status, phrase, |
| 3669 | nua_callstate_terminated); |
| 3670 | #endif |
| 3671 | return retval; |
| 3672 | } |
| 3673 | |
| 3674 | if (offer_recv_or_answer_sent) { |
| 3675 | /* signal offer received, answer sent */ |
| 3676 | enum nua_callstate state = ss->ss_state; |
| 3677 | |
| 3678 | if (state == nua_callstate_ready && status < 200) |
| 3679 | state = nua_callstate_received; |
| 3680 | |
| 3681 | signal_call_state_change(nh, ss, status, phrase, state); |
| 3682 | } |
| 3683 | |
| 3684 | if (200 <= status && status < 300 |
| 3685 | && ss->ss_state < nua_callstate_ready |
| 3686 | && ss->ss_precondition |
| 3687 | && !ss->ss_alerting |
| 3688 | && NH_PGET(nh, auto_alert)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_auto_alert ? ( (nh)->nh_prefs)->nhp_auto_alert : ((nh)->nh_nua-> nua_handles->nh_prefs)->nhp_auto_alert)) { |
| 3689 | nua_server_request_t *sri; |
| 3690 | |
| 3691 | for (sri = nh->nh_ds->ds_sr; sri; sri = sri->sr_next) |
| 3692 | if (sri->sr_method == sip_method_invite && |
| 3693 | nua_server_request_is_pending(sri)) |
| 3694 | break; |
| 3695 | |
| 3696 | if (sri) { |
| 3697 | SR_STATUS1(sri, SIP_180_RINGING)sr_status(sri, 180, sip_180_Ringing); |
| 3698 | nua_server_respond(sri, NULL((void*)0)); |
| 3699 | nua_server_report(sri); |
| 3700 | } |
| 3701 | } |
| 3702 | |
| 3703 | return retval; |
| 3704 | } |
| 3705 | |
| 3706 | /* ======================================================================== */ |
| 3707 | /* BYE */ |
| 3708 | |
| 3709 | /**@fn void nua_bye(nua_handle_t *nh, tag_type_t tag, tag_value_t value, ...); |
| 3710 | * |
| 3711 | * Hangdown a call. |
| 3712 | * |
| 3713 | * Hangdown a call using SIP BYE method. Also the media session |
| 3714 | * associated with the call is terminated. |
| 3715 | * |
| 3716 | * @param nh Pointer to operation handle |
| 3717 | * @param tag, value, ... List of tagged parameters |
| 3718 | * |
| 3719 | * @return |
| 3720 | * nothing |
| 3721 | * |
| 3722 | * @par Related Tags: |
| 3723 | * none |
| 3724 | * |
| 3725 | * @par Events: |
| 3726 | * #nua_r_bye \n |
| 3727 | * #nua_i_media_error |
| 3728 | */ |
| 3729 | |
| 3730 | static int nua_bye_client_init(nua_client_request_t *cr, |
| 3731 | msg_t *msg, sip_t *sip, |
| 3732 | tagi_t const *tags); |
| 3733 | static int nua_bye_client_request(nua_client_request_t *cr, |
| 3734 | msg_t *msg, sip_t *sip, |
| 3735 | tagi_t const *tags); |
| 3736 | static int nua_bye_client_response(nua_client_request_t *cr, |
| 3737 | int status, char const *phrase, |
| 3738 | sip_t const *sip); |
| 3739 | static int nua_bye_client_report(nua_client_request_t *cr, |
| 3740 | int status, char const *phrase, |
| 3741 | sip_t const *sip, |
| 3742 | nta_outgoing_t *orq, |
| 3743 | tagi_t const *tags); |
| 3744 | |
| 3745 | nua_client_methods_t const nua_bye_client_methods = { |
| 3746 | SIP_METHOD_BYEsip_method_bye, "BYE", /* crm_method, crm_method_name */ |
| 3747 | 0, /* crm_extrasize */ |
| 3748 | { /* crm_flags */ |
| 3749 | /* create_dialog */ 0, |
| 3750 | /* in_dialog */ 1, |
| 3751 | /* target refresh */ 0 |
| 3752 | }, |
| 3753 | NULL((void*)0), /* crm_template */ |
| 3754 | nua_bye_client_init, /* crm_init */ |
| 3755 | nua_bye_client_request, /* crm_send */ |
| 3756 | NULL((void*)0), /* crm_check_restart */ |
| 3757 | nua_bye_client_response, /* crm_recv */ |
| 3758 | NULL((void*)0), /* crm_preliminary */ |
| 3759 | nua_bye_client_report, /* crm_report */ |
| 3760 | NULL((void*)0), /* crm_complete */ |
| 3761 | }; |
| 3762 | |
| 3763 | int |
| 3764 | nua_stack_bye(nua_t *nua, nua_handle_t *nh, nua_event_t e, tagi_t const *tags) |
| 3765 | { |
| 3766 | nua_session_usage_t *ss = nua_session_usage_for_dialog(nh->nh_ds); |
| 3767 | |
| 3768 | if (ss && |
| 3769 | nua_callstate_calling <= ss->ss_state && |
| 3770 | ss->ss_state <= nua_callstate_proceeding) |
| 3771 | return nua_client_create(nh, e, &nua_cancel_client_methods, tags); |
| 3772 | else |
| 3773 | return nua_client_create(nh, e, &nua_bye_client_methods, tags); |
| 3774 | } |
| 3775 | |
| 3776 | static int nua_bye_client_init(nua_client_request_t *cr, |
| 3777 | msg_t *msg, sip_t *sip, |
| 3778 | tagi_t const *tags) |
| 3779 | { |
| 3780 | nua_handle_t *nh = cr->cr_owner; |
| 3781 | nua_dialog_usage_t *du = nua_dialog_usage_for_session(nh->nh_ds); |
| 3782 | nua_session_usage_t *ss = nua_dialog_usage_private(du)((du) ? (void*)((du) + 1) : ((void*)0)); |
| 3783 | |
| 3784 | if (!ss || (ss->ss_state >= nua_callstate_terminating && !cr->cr_auto)) |
| 3785 | return nua_client_return(cr, 900, "Invalid handle for BYE", msg); |
| 3786 | |
| 3787 | if (!cr->cr_auto) |
| 3788 | /* Implicit state transition by nua_bye() */ |
| 3789 | ss->ss_state = nua_callstate_terminating; |
| 3790 | |
| 3791 | if (nh->nh_soa) |
| 3792 | soa_terminate(nh->nh_soa, 0); |
| 3793 | |
| 3794 | nua_client_bind(cr, du); |
| 3795 | |
| 3796 | return 0; |
| 3797 | } |
| 3798 | |
| 3799 | static int nua_bye_client_request(nua_client_request_t *cr, |
| 3800 | msg_t *msg, sip_t *sip, |
| 3801 | tagi_t const *tags) |
| 3802 | { |
| 3803 | nua_dialog_usage_t *du = cr->cr_usage; |
| 3804 | nua_session_usage_t *ss; |
| 3805 | char const *reason = NULL((void*)0); |
| 3806 | |
| 3807 | int error; |
| 3808 | nua_server_request_t *sr; |
| 3809 | |
| 3810 | if (du == NULL((void*)0)) |
| 3811 | return nua_client_return(cr, SIP_481_NO_TRANSACTION481, sip_481_No_transaction, msg); |
| 3812 | |
| 3813 | ss = nua_dialog_usage_private(du)((du) ? (void*)((du) + 1) : ((void*)0)); |
| 3814 | reason = ss->ss_reason; |
| 3815 | |
| 3816 | error = nua_base_client_trequest(cr, msg, sip, |
| 3817 | SIPTAG_REASON_STR(reason)siptag_reason_str, tag_str_v(reason), |
| 3818 | TAG_NEXT(tags)tag_next, (tag_value_t)(tags)); |
| 3819 | |
| 3820 | if (error == 0) { |
| 3821 | nua_dialog_usage_reset_refresh(du); |
| 3822 | ss->ss_timer->timer_set = 0; |
| 3823 | |
| 3824 | /* Terminate server transactions associated with session, too. */ |
| 3825 | for (sr = du->du_dialog->ds_sr; sr; sr = sr->sr_next) { |
| 3826 | if (sr->sr_usage == du && nua_server_request_is_pending(sr) && |
| 3827 | sr->sr_method != sip_method_bye) { |
| 3828 | sr_status(sr, SIP_486_BUSY_HERE486, sip_486_Busy_here); |
| 3829 | nua_server_respond(sr, 0); |
| 3830 | } |
| 3831 | } |
| 3832 | } |
| 3833 | |
| 3834 | return error; |
| 3835 | } |
| 3836 | static int nua_bye_client_response(nua_client_request_t *cr, |
| 3837 | int status, char const *phrase, |
| 3838 | sip_t const *sip) { |
| 3839 | |
| 3840 | nua_dialog_usage_t *du = cr->cr_usage; |
| 3841 | nua_session_usage_t *ss = nua_dialog_usage_private(du)((du) ? (void*)((du) + 1) : ((void*)0)); |
| 3842 | |
| 3843 | if (ss && ss->ss_reporting && status >= 900) |
| 3844 | return 1; |
| 3845 | |
| 3846 | return nua_base_client_response(cr, status, phrase, sip, NULL((void*)0)); |
| 3847 | } |
| 3848 | |
| 3849 | /** @NUA_EVENT nua_r_bye |
| 3850 | * |
| 3851 | * Answer to outgoing BYE. |
| 3852 | * |
| 3853 | * The BYE may be sent explicitly by nua_bye() or implicitly by NUA state |
| 3854 | * machine. |
| 3855 | * |
| 3856 | * @param status response status code |
| 3857 | * (if the request is retried, @a status is 100, the @a |
| 3858 | * sip->sip_status->st_status contain the real status code |
| 3859 | * from the response message, e.g., 302, 401, or 407) |
| 3860 | * @param phrase a short textual description of @a status code |
| 3861 | * @param nh operation handle associated with the call |
| 3862 | * @param hmagic application context associated with the call |
| 3863 | * @param sip response to BYE request or NULL upon an error |
| 3864 | * (status code is in @a status and |
| 3865 | * descriptive message in @a phrase parameters) |
| 3866 | * @param tags empty |
| 3867 | * |
| 3868 | * @sa nua_bye(), @ref nua_call_model, #nua_i_state, #nua_r_invite() |
| 3869 | * |
| 3870 | * @END_NUA_EVENT |
| 3871 | */ |
| 3872 | |
| 3873 | static int nua_bye_client_report(nua_client_request_t *cr, |
| 3874 | int status, char const *phrase, |
| 3875 | sip_t const *sip, |
| 3876 | nta_outgoing_t *orq, |
| 3877 | tagi_t const *tags) |
| 3878 | { |
| 3879 | nua_handle_t *nh = cr->cr_owner; |
| 3880 | nua_dialog_usage_t *du = cr->cr_usage; |
| 3881 | |
| 3882 | nua_stack_event(nh->nh_nua, nh, |
| 3883 | nta_outgoing_getresponse(orq), |
| 3884 | (enum nua_event_e)cr->cr_event, |
| 3885 | status, phrase, |
| 3886 | tags); |
| 3887 | |
| 3888 | if (du == NULL((void*)0)) { |
| 3889 | /* No more session */ |
| 3890 | } |
| 3891 | else if (status < 200) { |
| 3892 | /* Preliminary */ |
| 3893 | } |
| 3894 | else { |
| 3895 | nua_session_usage_t *ss = nua_dialog_usage_private(du)((du) ? (void*)((du) + 1) : ((void*)0)); |
| 3896 | nua_client_request_t *cri; |
| 3897 | |
| 3898 | if (ss->ss_reporting) { |
| 3899 | return 1; /* Somebody else's problem */ |
| 3900 | } |
| 3901 | else if (cr->cr_waiting) { |
| 3902 | return 1; /* Application problem */ |
| 3903 | } |
| 3904 | |
| 3905 | nua_client_bind(cr, NULL((void*)0)); |
| 3906 | |
| 3907 | signal_call_state_change(nh, ss, status, "to BYE", |
| 3908 | nua_callstate_terminated); |
| 3909 | |
| 3910 | for (cri = du->du_dialog->ds_cr; cri; cri = cri->cr_next) { |
| 3911 | if (cri->cr_method == sip_method_invite) |
| 3912 | break; |
| 3913 | } |
| 3914 | |
| 3915 | if (!cri || cri->cr_status >= 200) { |
| 3916 | /* INVITE is completed, we can zap the session... */; |
| 3917 | nua_session_usage_destroy(nh, ss); |
| 3918 | } |
| 3919 | } |
| 3920 | |
| 3921 | return 1; |
| 3922 | } |
| 3923 | |
| 3924 | /** @NUA_EVENT nua_i_bye |
| 3925 | * |
| 3926 | * Incoming BYE request, call hangup. |
| 3927 | * |
| 3928 | * @param status statuscode of response sent automatically by stack |
| 3929 | * @param phrase a short textual description of @a status code |
| 3930 | * @param nh operation handle associated with the call |
| 3931 | * @param hmagic application context associated with the call |
| 3932 | * @param sip pointer to BYE request |
| 3933 | * @param tags empty |
| 3934 | * |
| 3935 | * @sa @ref nua_call_model, #nua_i_state, nua_bye(), nua_bye(), #nua_r_cancel |
| 3936 | * |
| 3937 | * @END_NUA_EVENT |
| 3938 | */ |
| 3939 | |
| 3940 | int nua_bye_server_init(nua_server_request_t *sr); |
| 3941 | int nua_bye_server_report(nua_server_request_t *sr, tagi_t const *tags); |
| 3942 | |
| 3943 | nua_server_methods_t const nua_bye_server_methods = |
| 3944 | { |
| 3945 | SIP_METHOD_BYEsip_method_bye, "BYE", |
| 3946 | nua_i_bye, /* Event */ |
| 3947 | { |
| 3948 | 0, /* Do not create dialog */ |
| 3949 | 1, /* In-dialog request */ |
| 3950 | 0, /* Not a target refresh request */ |
| 3951 | 0, /* Do not add Contact */ |
| 3952 | }, |
| 3953 | nua_bye_server_init, |
| 3954 | nua_base_server_preprocess((void*)0), |
| 3955 | nua_base_server_params((void*)0), |
| 3956 | nua_base_server_respond, |
| 3957 | nua_bye_server_report, |
| 3958 | }; |
| 3959 | |
| 3960 | |
| 3961 | int nua_bye_server_init(nua_server_request_t *sr) |
| 3962 | { |
| 3963 | nua_handle_t *nh = sr->sr_owner; |
| 3964 | nua_dialog_usage_t *du = nua_dialog_usage_for_session(nh->nh_ds); |
| 3965 | |
| 3966 | sr->sr_terminating = 1; |
| 3967 | |
| 3968 | if (du) |
| 3969 | sr->sr_usage = du; |
| 3970 | else |
| 3971 | return SR_STATUS(sr, 481, "No Such Call")((sr)->sr_phrase = ("No Such Call"), (sr)->sr_status = ( 481)); |
| 3972 | |
| 3973 | return 0; |
| 3974 | } |
| 3975 | |
| 3976 | int nua_bye_server_report(nua_server_request_t *sr, tagi_t const *tags) |
| 3977 | { |
| 3978 | nua_handle_t *nh = sr->sr_owner; |
| 3979 | nua_dialog_usage_t *du = sr->sr_usage; |
| 3980 | nua_session_usage_t *ss = nua_dialog_usage_private(du)((du) ? (void*)((du) + 1) : ((void*)0)); |
| 3981 | int early = 0, retval; |
| 3982 | |
| 3983 | if (sr->sr_status < 200) |
| 3984 | return nua_base_server_report(sr, tags); |
| 3985 | |
| 3986 | if (ss) { |
| 3987 | nua_server_request_t *sr0 = NULL((void*)0), *sr_next; |
| 3988 | char const *phrase; |
| 3989 | |
| 3990 | early = ss->ss_state < nua_callstate_ready; |
| 3991 | phrase = early ? "Early Session Terminated" : "Session Terminated"; |
| 3992 | |
| 3993 | #if 0 |
| 3994 | sr->sr_usage = NULL((void*)0); |
| 3995 | #endif |
| 3996 | |
| 3997 | for (sr0 = nh->nh_ds->ds_sr; sr0; sr0 = sr_next) { |
| 3998 | sr_next = sr0->sr_next; |
| 3999 | |
| 4000 | if (sr == sr0 || sr0->sr_usage != sr->sr_usage) |
| 4001 | continue; |
| 4002 | |
| 4003 | if (nua_server_request_is_pending(sr0)) { |
| 4004 | SR_STATUS(sr0, 487, phrase)((sr0)->sr_phrase = (phrase), (sr0)->sr_status = (487)); |
| 4005 | nua_server_respond(sr0, NULL((void*)0)); |
| 4006 | } |
| 4007 | nua_server_request_destroy(sr0); |
| 4008 | } |
| 4009 | |
| 4010 | sr->sr_phrase = phrase; |
| 4011 | } |
| 4012 | |
| 4013 | retval = nua_base_server_report(sr, tags); |
| 4014 | |
| 4015 | //assert(2 <= retval && retval < 4); |
| 4016 | |
| 4017 | #if 0 |
| 4018 | if (ss) { |
| 4019 | signal_call_state_change(nh, ss, 200, |
| 4020 | early ? "Received early BYE" : "Received BYE", |
| 4021 | nua_callstate_terminated); |
| 4022 | nua_dialog_usage_remove(nh, nh->nh_ds, du); |
| 4023 | } |
| 4024 | #endif |
| 4025 | |
| 4026 | return retval; |
| 4027 | } |
| 4028 | |
| 4029 | /* ---------------------------------------------------------------------- */ |
| 4030 | |
| 4031 | /** @NUA_EVENT nua_i_state |
| 4032 | * |
| 4033 | * @brief Call state has changed. |
| 4034 | * |
| 4035 | * This event will be sent whenever the call state changes. |
| 4036 | * |
| 4037 | * In addition to basic changes of session status indicated with enum |
| 4038 | * ::nua_callstate, the @RFC3264 SDP Offer/Answer negotiation status is also |
| 4039 | * included. The tags NUTAG_OFFER_RECV() or NUTAG_ANSWER_RECV() indicate |
| 4040 | * whether the remote SDP that was received was considered as an offer or an |
| 4041 | * answer. Tags NUTAG_OFFER_SENT() or NUTAG_ANSWER_SENT() indicate whether |
| 4042 | * the local SDP which was sent was considered as an offer or answer. |
| 4043 | * |
| 4044 | * If the @b soa SDP negotiation is enabled (by default or with |
| 4045 | * NUTAG_MEDIA_ENABLE(1)), the received remote SDP is included in tags |
| 4046 | * SOATAG_REMOTE_SDP() and SOATAG_REMOTE_SDP_STR(). The SDP negotiation |
| 4047 | * result from @b soa is included in the tags SOATAG_LOCAL_SDP() and |
| 4048 | * SOATAG_LOCAL_SDP_STR(). |
| 4049 | * |
| 4050 | * SOATAG_ACTIVE_AUDIO() and SOATAG_ACTIVE_VIDEO() are informational tags |
| 4051 | * used to indicate what is the status of audio or video. |
| 4052 | * |
| 4053 | * Note that #nua_i_state also covers the information relayed in call |
| 4054 | * establisment (#nua_i_active) and termination (#nua_i_terminated) events. |
| 4055 | * |
| 4056 | * @param status protocol status code \n |
| 4057 | * (always present) |
| 4058 | * @param phrase short description of status code \n |
| 4059 | * (always present) |
| 4060 | * @param nh operation handle associated with the call |
| 4061 | * @param hmagic application context associated with the call |
| 4062 | * @param sip NULL |
| 4063 | * @param tags NUTAG_CALLSTATE(), |
| 4064 | * SOATAG_LOCAL_SDP(), SOATAG_LOCAL_SDP_STR(), |
| 4065 | * NUTAG_OFFER_SENT(), NUTAG_ANSWER_SENT(), |
| 4066 | * SOATAG_REMOTE_SDP(), SOATAG_REMOTE_SDP_STR(), |
| 4067 | * NUTAG_OFFER_RECV(), NUTAG_ANSWER_RECV(), |
| 4068 | * SOATAG_ACTIVE_AUDIO(), SOATAG_ACTIVE_VIDEO(), |
| 4069 | * SOATAG_ACTIVE_IMAGE(), SOATAG_ACTIVE_CHAT(). |
| 4070 | * |
| 4071 | * @sa @ref nua_call_model, #nua_i_active, #nua_i_terminated, |
| 4072 | * nua_invite(), #nua_r_invite, #nua_i_invite, nua_respond(), |
| 4073 | * NUTAG_MEDIA_ENABLE(), |
| 4074 | * NUTAG_AUTOALERT(), NUTAG_AUTOANSWER(), NUTAG_EARLY_MEDIA(), |
| 4075 | * NUTAG_EARLY_ANSWER(), NUTAG_INCLUDE_EXTRA_SDP(), |
| 4076 | * nua_ack(), NUTAG_AUTOACK(), nua_bye(), #nua_r_bye, #nua_i_bye, |
| 4077 | * nua_cancel(), #nua_r_cancel, #nua_i_cancel, |
| 4078 | * nua_prack(), #nua_r_prack, #nua_i_prack, |
| 4079 | * nua_update(), #nua_r_update, #nua_i_update |
| 4080 | * |
| 4081 | * @par History |
| 4082 | * Prior @VERSION_1_12_6 the tags NUTAG_OFFER_RECV(), NUTAG_ANSWER_RECV(), |
| 4083 | * NUTAG_ANSWER_SENT(), NUTAG_OFFER_SENT() were not included with |
| 4084 | * nua_i_state eventif media was disabled. |
| 4085 | * |
| 4086 | * @END_NUA_EVENT |
| 4087 | */ |
| 4088 | |
| 4089 | /** |
| 4090 | * Delivers call state changed event to the nua client. @internal |
| 4091 | * |
| 4092 | * @param nh call handle |
| 4093 | * @param status status code |
| 4094 | * @param tr_event SIP transaction event triggering this change |
| 4095 | * @param oa_recv Received SDP |
| 4096 | * @param oa_sent Sent SDP |
| 4097 | */ |
| 4098 | |
| 4099 | static void signal_call_state_change(nua_handle_t *nh, |
| 4100 | nua_session_usage_t *ss, |
| 4101 | int status, char const *phrase, |
| 4102 | enum nua_callstate next_state) |
| 4103 | { |
| 4104 | enum nua_callstate ss_state = nua_callstate_init; |
| 4105 | enum nua_callstate invite_state = next_state; |
| 4106 | |
| 4107 | char const *oa_recv = NULL((void*)0); |
| 4108 | char const *oa_sent = NULL((void*)0); |
| 4109 | |
| 4110 | int offer_recv = 0, answer_recv = 0, offer_sent = 0, answer_sent = 0; |
| 4111 | |
| 4112 | if (ss) { |
| 4113 | if (ss->ss_reporting) |
| 4114 | return; |
| 4115 | |
| 4116 | ss_state = ss->ss_state; |
| 4117 | oa_recv = ss->ss_oa_recv, ss->ss_oa_recv = NULL((void*)0); |
| 4118 | oa_sent = ss->ss_oa_sent, ss->ss_oa_sent = NULL((void*)0); |
| 4119 | |
| 4120 | assert(oa_sent == Offer || oa_sent == Answer || oa_sent == NULL)((void) sizeof ((oa_sent == Offer || oa_sent == Answer || oa_sent == ((void*)0)) ? 1 : 0), __extension__ ({ if (oa_sent == Offer || oa_sent == Answer || oa_sent == ((void*)0)) ; else __assert_fail ("oa_sent == Offer || oa_sent == Answer || oa_sent == NULL", "nua_session.c", 4120, __extension__ __PRETTY_FUNCTION__); } )); |
| 4121 | assert(oa_recv == Offer || oa_recv == Answer || oa_recv == NULL)((void) sizeof ((oa_recv == Offer || oa_recv == Answer || oa_recv == ((void*)0)) ? 1 : 0), __extension__ ({ if (oa_recv == Offer || oa_recv == Answer || oa_recv == ((void*)0)) ; else __assert_fail ("oa_recv == Offer || oa_recv == Answer || oa_recv == NULL", "nua_session.c", 4121, __extension__ __PRETTY_FUNCTION__); } )); |
| 4122 | |
| 4123 | if (oa_recv) { |
| 4124 | offer_recv = oa_recv == Offer; |
| 4125 | answer_recv = oa_recv == Answer; |
| 4126 | } |
| 4127 | |
| 4128 | if (oa_sent) { |
| 4129 | offer_sent = oa_sent == Offer; |
| 4130 | answer_sent = oa_sent == Answer; |
| 4131 | } |
| 4132 | } |
| 4133 | |
| 4134 | if (ss_state < nua_callstate_ready || next_state > nua_callstate_ready) |
| 4135 | SU_DEBUG_5(("nua(%p): call state changed: %s -> %s%s%s%s%s\n",((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 4140, "nua(%p): call state changed: %s -> %s%s%s%s%s\n" , (void *)nh, nua_callstate_name(ss_state), nua_callstate_name (next_state), oa_recv ? ", received " : "", oa_recv ? oa_recv : "", oa_sent && oa_recv ? ", and sent " : oa_sent ? ", sent " : "", oa_sent ? oa_sent : "")) : (void)0) |
| 4136 | (void *)nh, nua_callstate_name(ss_state),((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 4140, "nua(%p): call state changed: %s -> %s%s%s%s%s\n" , (void *)nh, nua_callstate_name(ss_state), nua_callstate_name (next_state), oa_recv ? ", received " : "", oa_recv ? oa_recv : "", oa_sent && oa_recv ? ", and sent " : oa_sent ? ", sent " : "", oa_sent ? oa_sent : "")) : (void)0) |
| 4137 | nua_callstate_name(next_state),((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 4140, "nua(%p): call state changed: %s -> %s%s%s%s%s\n" , (void *)nh, nua_callstate_name(ss_state), nua_callstate_name (next_state), oa_recv ? ", received " : "", oa_recv ? oa_recv : "", oa_sent && oa_recv ? ", and sent " : oa_sent ? ", sent " : "", oa_sent ? oa_sent : "")) : (void)0) |
| 4138 | oa_recv ? ", received " : "", oa_recv ? oa_recv : "",((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 4140, "nua(%p): call state changed: %s -> %s%s%s%s%s\n" , (void *)nh, nua_callstate_name(ss_state), nua_callstate_name (next_state), oa_recv ? ", received " : "", oa_recv ? oa_recv : "", oa_sent && oa_recv ? ", and sent " : oa_sent ? ", sent " : "", oa_sent ? oa_sent : "")) : (void)0) |
| 4139 | oa_sent && oa_recv ? ", and sent " :((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 4140, "nua(%p): call state changed: %s -> %s%s%s%s%s\n" , (void *)nh, nua_callstate_name(ss_state), nua_callstate_name (next_state), oa_recv ? ", received " : "", oa_recv ? oa_recv : "", oa_sent && oa_recv ? ", and sent " : oa_sent ? ", sent " : "", oa_sent ? oa_sent : "")) : (void)0) |
| 4140 | oa_sent ? ", sent " : "", oa_sent ? oa_sent : ""))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 4140, "nua(%p): call state changed: %s -> %s%s%s%s%s\n" , (void *)nh, nua_callstate_name(ss_state), nua_callstate_name (next_state), oa_recv ? ", received " : "", oa_recv ? oa_recv : "", oa_sent && oa_recv ? ", and sent " : oa_sent ? ", sent " : "", oa_sent ? oa_sent : "")) : (void)0); |
| 4141 | else |
| 4142 | SU_DEBUG_5(("nua(%p): ready call updated: %s%s%s%s%s\n",((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 4146, "nua(%p): ready call updated: %s%s%s%s%s\n" , (void *)nh, nua_callstate_name(next_state), oa_recv ? " received " : "", oa_recv ? oa_recv : "", oa_sent && oa_recv ? ", sent " : oa_sent ? " sent " : "", oa_sent ? oa_sent : "")) : (void) 0) |
| 4143 | (void *)nh, nua_callstate_name(next_state),((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 4146, "nua(%p): ready call updated: %s%s%s%s%s\n" , (void *)nh, nua_callstate_name(next_state), oa_recv ? " received " : "", oa_recv ? oa_recv : "", oa_sent && oa_recv ? ", sent " : oa_sent ? " sent " : "", oa_sent ? oa_sent : "")) : (void) 0) |
| 4144 | oa_recv ? " received " : "", oa_recv ? oa_recv : "",((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 4146, "nua(%p): ready call updated: %s%s%s%s%s\n" , (void *)nh, nua_callstate_name(next_state), oa_recv ? " received " : "", oa_recv ? oa_recv : "", oa_sent && oa_recv ? ", sent " : oa_sent ? " sent " : "", oa_sent ? oa_sent : "")) : (void) 0) |
| 4145 | oa_sent && oa_recv ? ", sent " :((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 4146, "nua(%p): ready call updated: %s%s%s%s%s\n" , (void *)nh, nua_callstate_name(next_state), oa_recv ? " received " : "", oa_recv ? oa_recv : "", oa_sent && oa_recv ? ", sent " : oa_sent ? " sent " : "", oa_sent ? oa_sent : "")) : (void) 0) |
| 4146 | oa_sent ? " sent " : "", oa_sent ? oa_sent : ""))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 4146, "nua(%p): ready call updated: %s%s%s%s%s\n" , (void *)nh, nua_callstate_name(next_state), oa_recv ? " received " : "", oa_recv ? oa_recv : "", oa_sent && oa_recv ? ", sent " : oa_sent ? " sent " : "", oa_sent ? oa_sent : "")) : (void) 0); |
| 4147 | |
| 4148 | if (next_state == nua_callstate_terminating && |
| 4149 | ss_state >= nua_callstate_terminating) |
| 4150 | return; |
| 4151 | |
| 4152 | if (ss) { |
| 4153 | /* Update state variables */ |
| 4154 | if (next_state == nua_callstate_init) { |
| 4155 | if (ss_state < nua_callstate_ready) |
| 4156 | ss->ss_state = next_state; |
| 4157 | else if (ss->ss_state == nua_callstate_ready) |
| 4158 | next_state = ss->ss_state; |
| 4159 | else if (ss->ss_state == nua_callstate_terminating) |
| 4160 | return; |
| 4161 | else |
| 4162 | ss->ss_state = next_state = nua_callstate_terminated; |
| 4163 | } |
| 4164 | else if (next_state > ss_state) |
| 4165 | ss->ss_state = next_state; |
| 4166 | } |
| 4167 | |
| 4168 | if (next_state == nua_callstate_init) |
| 4169 | next_state = nua_callstate_terminated; |
| 4170 | |
| 4171 | if (ss && ss->ss_state == nua_callstate_ready) |
| 4172 | nh->nh_active_call = 1; |
| 4173 | else if (next_state == nua_callstate_terminated) |
| 4174 | nh->nh_active_call = 0; |
| 4175 | |
| 4176 | /* Send events */ |
| 4177 | if (phrase == NULL((void*)0)) |
| 4178 | phrase = "Call state"; |
| 4179 | |
| 4180 | { |
| 4181 | sdp_session_t const *remote_sdp = NULL((void*)0); |
| 4182 | char const *remote_sdp_str = NULL((void*)0); |
| 4183 | sdp_session_t const *local_sdp = NULL((void*)0); |
| 4184 | char const *local_sdp_str = NULL((void*)0); |
| 4185 | |
| 4186 | if (nh->nh_soa) { |
| 4187 | if (oa_recv) |
| 4188 | soa_get_remote_sdp(nh->nh_soa, &remote_sdp, &remote_sdp_str, 0); |
| 4189 | if (oa_sent) |
| 4190 | soa_get_local_sdp(nh->nh_soa, &local_sdp, &local_sdp_str, 0); |
| 4191 | |
| 4192 | if (answer_recv || answer_sent) { /* Update nh_hold_remote */ |
| 4193 | char const *held = NULL((void*)0); |
| 4194 | soa_get_params(nh->nh_soa, SOATAG_HOLD_REF(held)soatag_hold_ref, tag_str_vr(&(held)), TAG_END()(tag_type_t)0, (tag_value_t)0); |
| 4195 | nh->nh_hold_remote = held && strlen(held) > 0; |
| 4196 | } |
| 4197 | } |
| 4198 | else |
| 4199 | oa_recv = NULL((void*)0), oa_sent = NULL((void*)0); |
| 4200 | |
| 4201 | nua_stack_tevent(nh->nh_nua, nh, NULL((void*)0), nua_i_state, |
| 4202 | status, phrase, |
| 4203 | NUTAG_CALLSTATE(next_state)nutag_callstate, tag_int_v(next_state), |
| 4204 | NH_ACTIVE_MEDIA_TAGS(1, nh->nh_soa)!((1) && (nh->nh_soa) && soa_is_audio_active (nh->nh_soa) >= 0) ? tag_skip : soatag_active_audio, tag_int_v (soa_is_audio_active(nh->nh_soa)), !((1) && (nh-> nh_soa) && soa_is_video_active(nh->nh_soa) >= 0 ) ? tag_skip : soatag_active_video, tag_int_v(soa_is_video_active (nh->nh_soa)), !((1) && (nh->nh_soa) && soa_is_image_active(nh->nh_soa) >= 0) ? tag_skip : soatag_active_image , tag_int_v(soa_is_image_active(nh->nh_soa)), !((1) && (nh->nh_soa) && soa_is_chat_active(nh->nh_soa) >= 0) ? tag_skip : soatag_active_chat, tag_int_v(soa_is_chat_active (nh->nh_soa)), |
| 4205 | /* NUTAG_SOA_SESSION(nh->nh_soa), */ |
| 4206 | TAG_IF(offer_recv, NUTAG_OFFER_RECV(offer_recv))!(offer_recv) ? tag_skip : nutag_offer_recv, tag_bool_v(offer_recv ), |
| 4207 | TAG_IF(answer_recv, NUTAG_ANSWER_RECV(answer_recv))!(answer_recv) ? tag_skip : nutag_answer_recv, tag_bool_v(answer_recv ), |
| 4208 | TAG_IF(offer_sent, NUTAG_OFFER_SENT(offer_sent))!(offer_sent) ? tag_skip : nutag_offer_sent, tag_bool_v(offer_sent ), |
| 4209 | TAG_IF(answer_sent, NUTAG_ANSWER_SENT(answer_sent))!(answer_sent) ? tag_skip : nutag_answer_sent, tag_bool_v(answer_sent ), |
| 4210 | TAG_IF(oa_recv, SOATAG_REMOTE_SDP(remote_sdp))!(oa_recv) ? tag_skip : soatag_remote_sdp, sdptag_session_v(remote_sdp ), |
| 4211 | TAG_IF(oa_recv, SOATAG_REMOTE_SDP_STR(remote_sdp_str))!(oa_recv) ? tag_skip : soatag_remote_sdp_str, tag_str_v(remote_sdp_str ), |
| 4212 | TAG_IF(oa_sent, SOATAG_LOCAL_SDP(local_sdp))!(oa_sent) ? tag_skip : soatag_local_sdp, sdptag_session_v(local_sdp ), |
| 4213 | TAG_IF(oa_sent, SOATAG_LOCAL_SDP_STR(local_sdp_str))!(oa_sent) ? tag_skip : soatag_local_sdp_str, tag_str_v(local_sdp_str ), |
| 4214 | TAG_END()(tag_type_t)0, (tag_value_t)0); |
| 4215 | } |
| 4216 | |
| 4217 | if (next_state == nua_callstate_ready && ss_state <= nua_callstate_ready) { |
| 4218 | nua_stack_tevent(nh->nh_nua, nh, NULL((void*)0), nua_i_active, status, "Call active", |
| 4219 | NH_ACTIVE_MEDIA_TAGS(1, nh->nh_soa)!((1) && (nh->nh_soa) && soa_is_audio_active (nh->nh_soa) >= 0) ? tag_skip : soatag_active_audio, tag_int_v (soa_is_audio_active(nh->nh_soa)), !((1) && (nh-> nh_soa) && soa_is_video_active(nh->nh_soa) >= 0 ) ? tag_skip : soatag_active_video, tag_int_v(soa_is_video_active (nh->nh_soa)), !((1) && (nh->nh_soa) && soa_is_image_active(nh->nh_soa) >= 0) ? tag_skip : soatag_active_image , tag_int_v(soa_is_image_active(nh->nh_soa)), !((1) && (nh->nh_soa) && soa_is_chat_active(nh->nh_soa) >= 0) ? tag_skip : soatag_active_chat, tag_int_v(soa_is_chat_active (nh->nh_soa)), |
| 4220 | /* NUTAG_SOA_SESSION(nh->nh_soa), */ |
| 4221 | TAG_END()(tag_type_t)0, (tag_value_t)0); |
| 4222 | } |
| 4223 | |
| 4224 | else if (next_state == nua_callstate_terminated) { |
| 4225 | nua_stack_event(nh->nh_nua, nh, NULL((void*)0), |
| 4226 | nua_i_terminated, status, phrase, |
| 4227 | NULL((void*)0)); |
| 4228 | } |
| 4229 | |
| 4230 | if (invite_state == nua_callstate_ready) { |
| 4231 | /* Start next INVITE request, if queued */ |
| 4232 | nua_client_next_request(nh->nh_ds->ds_cr, 1); |
| 4233 | } |
| 4234 | } |
| 4235 | |
| 4236 | /** @NUA_EVENT nua_i_active |
| 4237 | * |
| 4238 | * A call has been activated. |
| 4239 | * |
| 4240 | * This event will be sent after a succesful response to the initial |
| 4241 | * INVITE has been received and the media has been activated. |
| 4242 | * |
| 4243 | * @param nh operation handle associated with the call |
| 4244 | * @param hmagic application context associated with the call |
| 4245 | * @param sip NULL |
| 4246 | * @param tags SOATAG_ACTIVE_AUDIO(), SOATAG_ACTIVE_VIDEO(), |
| 4247 | * SOATAG_ACTIVE_IMAGE(), SOATAG_ACTIVE_CHAT(). |
| 4248 | * |
| 4249 | * @deprecated Use #nua_i_state instead. |
| 4250 | * |
| 4251 | * @sa @ref nua_call_model, #nua_i_state, #nua_i_terminated, |
| 4252 | * #nua_i_invite |
| 4253 | * |
| 4254 | * @END_NUA_EVENT |
| 4255 | */ |
| 4256 | |
| 4257 | /** @NUA_EVENT nua_i_terminated |
| 4258 | * |
| 4259 | * A call has been terminated. |
| 4260 | * |
| 4261 | * This event will be sent after a call has been terminated. A call is |
| 4262 | * terminated, when |
| 4263 | * 1) an error response (300..599) is sent to an incoming initial INVITE |
| 4264 | * 2) a reliable response (200..299 or reliable preliminary response) to |
| 4265 | * an incoming initial INVITE is not acknowledged with ACK or PRACK |
| 4266 | * 3) BYE is received or sent |
| 4267 | * |
| 4268 | * @param nh operation handle associated with the call |
| 4269 | * @param hmagic application context associated with the call |
| 4270 | * @param sip NULL |
| 4271 | * @param tags empty |
| 4272 | * |
| 4273 | * @deprecated Use #nua_i_state instead. |
| 4274 | * |
| 4275 | * @sa @ref nua_call_model, #nua_i_state, #nua_i_active, #nua_i_bye, |
| 4276 | * #nua_i_invite |
| 4277 | * |
| 4278 | * @END_NUA_EVENT |
| 4279 | */ |
| 4280 | |
| 4281 | |
| 4282 | /* ======================================================================== */ |
| 4283 | |
| 4284 | static |
| 4285 | int nua_server_retry_after(nua_server_request_t *sr, |
| 4286 | int status, char const *phrase, |
| 4287 | int min, int max) |
| 4288 | { |
| 4289 | sip_retry_after_t af[1]; |
| 4290 | |
| 4291 | sip_retry_after_init(af); |
| 4292 | af->af_delta = (unsigned)su_randint(min, max); |
| 4293 | af->af_comment = phrase; |
| 4294 | |
| 4295 | sip_add_dup(sr->sr_response.msg, sr->sr_response.sip, (sip_header_t *)af); |
| 4296 | |
| 4297 | return sr_status(sr, status, phrase); |
| 4298 | } |
| 4299 | |
| 4300 | /* ======================================================================== */ |
| 4301 | /* Session timer - RFC 4028 */ |
| 4302 | |
| 4303 | static int session_timer_is_supported(struct session_timer const *t) |
| 4304 | { |
| 4305 | return t->local.supported; |
| 4306 | } |
| 4307 | |
| 4308 | /** Set session timer preferences */ |
| 4309 | static |
| 4310 | void session_timer_preferences(struct session_timer *t, |
| 4311 | sip_t const *sip, |
| 4312 | sip_supported_t const *supported, |
| 4313 | unsigned expires, |
| 4314 | int isset, |
| 4315 | enum nua_session_refresher refresher, |
| 4316 | unsigned min_se) |
| 4317 | { |
| 4318 | memset(&t->local, 0, sizeof t->local); |
| 4319 | |
| 4320 | t->local.require = sip_has_feature(sip->sip_require, "timer"); |
| 4321 | t->local.supported = |
| 4322 | sip_has_feature(supported, "timer") || |
| 4323 | sip_has_feature(sip->sip_supported, "timer"); |
| 4324 | if (isset || refresher != nua_no_refresher) |
| 4325 | t->local.expires = expires; |
| 4326 | else |
| 4327 | t->local.defaults = expires; |
| 4328 | t->local.min_se = min_se; |
| 4329 | t->local.refresher = refresher; |
| 4330 | } |
| 4331 | |
| 4332 | static int session_timer_check_restart(nua_client_request_t *cr, |
| 4333 | int status, char const *phrase, |
| 4334 | sip_t const *sip) |
| 4335 | { |
| 4336 | if (status == 422) { |
| 4337 | nua_session_usage_t *ss = nua_dialog_usage_private(cr->cr_usage)((cr->cr_usage) ? (void*)((cr->cr_usage) + 1) : ((void* )0)); |
| 4338 | |
| 4339 | if (ss && session_timer_is_supported(ss->ss_timer)) { |
| 4340 | struct session_timer *t = ss->ss_timer; |
| 4341 | |
| 4342 | if (sip->sip_min_se && t->local.min_se < sip->sip_min_se->min_delta) |
| 4343 | t->local.min_se = sip->sip_min_se->min_delta; |
| 4344 | if (t->local.expires != 0 && t->local.min_se > t->local.expires) |
| 4345 | t->local.expires = t->local.min_se; |
| 4346 | |
| 4347 | return nua_client_restart(cr, 100, "Re-Negotiating Session Timer"); |
| 4348 | } |
| 4349 | } |
| 4350 | |
| 4351 | return nua_base_client_check_restart(cr, status, phrase, sip); |
| 4352 | } |
| 4353 | |
| 4354 | /** Check that received Session-Expires is longer than Min-SE */ |
| 4355 | static |
| 4356 | int session_timer_check_min_se(msg_t *msg, |
| 4357 | sip_t *sip, |
| 4358 | sip_t const *request, |
| 4359 | unsigned long min) |
| 4360 | { |
| 4361 | if (min == 0) |
| 4362 | min = 1; |
| 4363 | |
| 4364 | /* |
| 4365 | If an incoming request contains a Supported header field with a value |
| 4366 | 'timer' and a Session Expires header field, the UAS MAY reject the |
| 4367 | INVITE request with a 422 (Session Interval Too Small) response if |
| 4368 | the session interval in the Session-Expires header field is smaller |
| 4369 | than the minimum interval defined by the UAS' local policy. When |
| 4370 | sending the 422 response, the UAS MUST include a Min-SE header field |
| 4371 | with the value of its minimum interval. This minimum interval MUST |
| 4372 | NOT be lower than 90 seconds. |
| 4373 | */ |
| 4374 | if (request->sip_session_expires && |
| 4375 | sip_has_feature(request->sip_supported, "timer") && |
| 4376 | request->sip_session_expires->x_delta < min) { |
| 4377 | sip_min_se_t min_se[1]; |
| 4378 | |
| 4379 | if (min < 90) |
| 4380 | min = 90; |
| 4381 | |
| 4382 | sip_min_se_init(min_se)->min_delta = min; |
| 4383 | |
| 4384 | /* Include extension parameters, if any */ |
| 4385 | if (request->sip_min_se) |
| 4386 | min_se->min_params = request->sip_min_se->min_params; |
| 4387 | |
| 4388 | sip_add_dup(msg, sip, (sip_header_t *)min_se); |
| 4389 | |
| 4390 | return 422; |
| 4391 | } |
| 4392 | |
| 4393 | return 0; |
| 4394 | } |
| 4395 | |
| 4396 | /** Store session timer parameters in request from uac / response from uas */ |
| 4397 | static |
| 4398 | void session_timer_store(struct session_timer *t, |
| 4399 | sip_t const *sip) |
| 4400 | { |
| 4401 | sip_require_t const *require = sip->sip_require; |
| 4402 | sip_supported_t const *supported = sip->sip_supported; |
| 4403 | sip_session_expires_t const *x = sip->sip_session_expires; |
| 4404 | |
| 4405 | t->remote.require = require && sip_has_feature(require, "timer"); |
| 4406 | t->remote.supported = |
| 4407 | t->remote.supported || (supported && sip_has_feature(supported, "timer")); |
| 4408 | |
| 4409 | t->remote.expires = 0; |
| 4410 | t->remote.refresher = nua_any_refresher; |
| 4411 | t->remote.min_se = 0; |
| 4412 | |
| 4413 | if (x) { |
| 4414 | t->remote.expires = x->x_delta; |
| 4415 | |
| 4416 | if (x->x_refresher) { |
| 4417 | int uas = sip->sip_request != NULL((void*)0); |
| 4418 | |
| 4419 | if (su_casenmatch(x->x_refresher, "uac", (sizeof "uac"))) |
| 4420 | t->remote.refresher = uas ? nua_remote_refresher : nua_local_refresher; |
| 4421 | else if (su_casenmatch(x->x_refresher, "uas", (sizeof "uas"))) |
| 4422 | t->remote.refresher = uas ? nua_local_refresher : nua_remote_refresher; |
| 4423 | } |
| 4424 | else if (t->remote.require) { |
| 4425 | /* Require: timer but no refresher parameter in Session-Expires header */ |
| 4426 | t->remote.refresher = nua_local_refresher; |
| 4427 | } |
| 4428 | } |
| 4429 | |
| 4430 | if (sip->sip_min_se) |
| 4431 | t->remote.min_se = sip->sip_min_se->min_delta; |
| 4432 | } |
| 4433 | |
| 4434 | /** Add timer feature and Session-Expires/Min-SE headers to request/response |
| 4435 | * |
| 4436 | */ |
| 4437 | static int |
| 4438 | session_timer_add_headers(struct session_timer *t, |
| 4439 | int initial, |
| 4440 | msg_t *msg, |
| 4441 | sip_t *sip, |
| 4442 | nua_handle_t *nh) |
| 4443 | { |
| 4444 | unsigned long expires, min; |
| 4445 | sip_min_se_t min_se[1]; |
| 4446 | sip_session_expires_t x[1]; |
| 4447 | int uas; |
| 4448 | int autorequire = 1; |
| 4449 | |
| 4450 | enum nua_session_refresher refresher = nua_any_refresher; |
| 4451 | |
| 4452 | static sip_param_t const x_params_uac[] = {"refresher=uac", NULL((void*)0)}; |
| 4453 | static sip_param_t const x_params_uas[] = {"refresher=uas", NULL((void*)0)}; |
| 4454 | |
| 4455 | if ( !NH_PGET(nh, timer_autorequire)(((nh)->nh_prefs)->nhp_set_.set_bits.nhb_timer_autorequire ? ((nh)->nh_prefs)->nhp_timer_autorequire : ((nh)-> nh_nua->nua_handles->nh_prefs)->nhp_timer_autorequire ) && NH_PISSET(nh, timer_autorequire)((((nh)->nh_prefs)->nhp_set_.set_bits.nhb_timer_autorequire ) && (nh)->nh_nua->nua_handles->nh_prefs != ( nh)->nh_prefs)) { |
| 4456 | autorequire = 0; |
| 4457 | } |
| 4458 | |
| 4459 | if (!t->local.supported) |
| 4460 | return 0; |
| 4461 | |
| 4462 | uas = sip->sip_status != NULL((void*)0); |
| 4463 | |
| 4464 | min = t->local.min_se; |
| 4465 | if (min < t->remote.min_se) |
| 4466 | min = t->remote.min_se; |
| 4467 | |
| 4468 | if (uas) { |
| 4469 | session_timer_negotiate(t, uas = 1); |
| 4470 | |
| 4471 | refresher = t->refresher; |
| 4472 | expires = t->interval; |
| 4473 | } |
| 4474 | else { |
| 4475 | /* RFC 4028: |
| 4476 | * The UAC MAY include the refresher parameter with value 'uac' if it |
| 4477 | * wants to perform the refreshes. However, it is RECOMMENDED that the |
| 4478 | * parameter be omitted so that it can be selected by the negotiation |
| 4479 | * mechanisms described below. |
| 4480 | */ |
| 4481 | if (t->local.refresher == nua_local_refresher) |
| 4482 | refresher = nua_local_refresher; |
| 4483 | else if (!initial) |
| 4484 | refresher = t->refresher; |
| 4485 | |
| 4486 | expires = t->local.expires; |
| 4487 | if (expires != 0 && expires < min) |
| 4488 | expires = min; |
| 4489 | |
| 4490 | if (expires == 0 && !initial && t->interval) |
| 4491 | expires = t->interval; |
| 4492 | } |
| 4493 | |
| 4494 | sip_min_se_init(min_se)->min_delta = min; |
| 4495 | |
| 4496 | sip_session_expires_init(x)->x_delta = expires; |
| 4497 | if (refresher == nua_remote_refresher) |
| 4498 | x->x_params = uas ? x_params_uac : x_params_uas; |
| 4499 | else if (refresher == nua_local_refresher) |
| 4500 | x->x_params = uas ? x_params_uas : x_params_uac; |
| 4501 | |
| 4502 | if (expires == 0 && t->remote.min_se == 0) |
| 4503 | /* Session timer is not used, do not add headers */ |
| 4504 | return 1; |
| 4505 | |
| 4506 | sip_add_tl(msg, sip, |
| 4507 | TAG_IF(expires != 0, SIPTAG_SESSION_EXPIRES(x))!(expires != 0) ? tag_skip : siptag_session_expires, siptag_session_expires_v (x), |
| 4508 | TAG_IF((!uas || sip->sip_status->st_status == 422) && (min != 0!((!uas || sip->sip_status->st_status == 422) && (min != 0 || !initial)) ? tag_skip : siptag_min_se, siptag_min_se_v (min_se) |
| 4509 | /* Min-SE: 0 is optional with initial INVITE */!((!uas || sip->sip_status->st_status == 422) && (min != 0 || !initial)) ? tag_skip : siptag_min_se, siptag_min_se_v (min_se) |
| 4510 | || !initial),!((!uas || sip->sip_status->st_status == 422) && (min != 0 || !initial)) ? tag_skip : siptag_min_se, siptag_min_se_v (min_se) |
| 4511 | SIPTAG_MIN_SE(min_se))!((!uas || sip->sip_status->st_status == 422) && (min != 0 || !initial)) ? tag_skip : siptag_min_se, siptag_min_se_v (min_se), |
| 4512 | TAG_IF(autorequire && refresher == nua_remote_refresher && expires != 0, SIPTAG_REQUIRE_STR("timer"))!(autorequire && refresher == nua_remote_refresher && expires != 0) ? tag_skip : siptag_require_str, tag_str_v("timer" ), |
| 4513 | TAG_END()(tag_type_t)0, (tag_value_t)0); |
| 4514 | |
| 4515 | return 1; |
| 4516 | } |
| 4517 | |
| 4518 | static void |
| 4519 | session_timer_negotiate(struct session_timer *t, int uas) |
| 4520 | { |
| 4521 | if (!t->local.supported) |
| 4522 | t->refresher = nua_no_refresher; |
| 4523 | else if (!t->remote.supported) |
| 4524 | t->refresher = nua_local_refresher; |
| 4525 | else if (t->remote.refresher == nua_local_refresher) |
| 4526 | t->refresher = nua_local_refresher; |
| 4527 | else if (t->remote.refresher == nua_remote_refresher) |
| 4528 | t->refresher = nua_remote_refresher; |
| 4529 | else if (uas) |
| 4530 | /* UAS defaults UAC to refreshing */ |
| 4531 | t->refresher = nua_remote_refresher; |
| 4532 | else |
| 4533 | /* UAC refreshes by itself */ |
| 4534 | t->refresher = nua_local_refresher; |
| 4535 | |
| 4536 | t->interval = t->remote.expires; |
| 4537 | if (t->interval == 0) |
| 4538 | t->interval = t->local.expires; |
| 4539 | if (t->local.expires != 0 && t->interval > t->local.expires) |
| 4540 | t->interval = t->local.expires; |
| 4541 | if (t->local.defaults != 0 && t->interval > t->local.defaults) |
| 4542 | t->interval = t->local.defaults; |
| 4543 | |
| 4544 | if (t->interval != 0) { |
| 4545 | if (t->interval < t->local.min_se) |
| 4546 | t->interval = t->local.min_se; |
| 4547 | if (t->interval < t->remote.min_se) |
| 4548 | t->interval = t->remote.min_se; |
| 4549 | } |
| 4550 | |
| 4551 | if (t->interval == 0) |
| 4552 | t->refresher = nua_no_refresher; |
| 4553 | } |
| 4554 | |
| 4555 | static void |
| 4556 | session_timer_set(nua_session_usage_t *ss, int uas) |
| 4557 | { |
| 4558 | nua_dialog_usage_t *du = nua_dialog_usage_public(ss)((ss) ? (nua_dialog_usage_t*)(ss) - 1 : ((void*)0)); |
| 4559 | struct session_timer *t; |
| 4560 | |
| 4561 | if (ss == NULL((void*)0)) |
| 4562 | return; |
| 4563 | |
| 4564 | t = ss->ss_timer; |
| 4565 | |
| 4566 | session_timer_negotiate(t, uas); |
| 4567 | |
| 4568 | if (t->refresher == nua_local_refresher) { |
| 4569 | unsigned low = t->interval / 2, high = t->interval / 2; |
| 4570 | |
| 4571 | if (t->interval >= 90) |
| 4572 | low -=5, high += 5; |
| 4573 | |
| 4574 | nua_dialog_usage_set_refresh_range(du, low, high); |
| 4575 | t->timer_set = 1; |
| 4576 | } |
| 4577 | else if (t->refresher == nua_remote_refresher) { |
| 4578 | /* RFC 4028 10.3 and 10.4: Send BYE before the session expires. |
| 4579 | Increased interval from 2/3 to 9/10 of session expiration delay |
| 4580 | because some endpoints won't UPDATE early enough with very short |
| 4581 | sessions (e.g. 120). */ |
| 4582 | |
| 4583 | unsigned interval = t->interval; |
| 4584 | |
| 4585 | interval -= 32 > interval / 10 ? interval / 10 : 32; |
| 4586 | |
| 4587 | nua_dialog_usage_set_refresh_range(du, interval, interval); |
| 4588 | t->timer_set = 1; |
| 4589 | } |
| 4590 | else { |
| 4591 | nua_dialog_usage_reset_refresh(du); |
| 4592 | t->timer_set = 0; |
| 4593 | } |
| 4594 | } |
| 4595 | |
| 4596 | /* ======================================================================== */ |
| 4597 | |
| 4598 | /** Get SDP from a SIP message. |
| 4599 | * |
| 4600 | * @retval 1 if message contains SDP |
| 4601 | * @retval 0 if message does not contain valid SDP |
| 4602 | */ |
| 4603 | static |
| 4604 | int session_get_description(sip_t const *sip, |
| 4605 | char const **return_sdp, |
| 4606 | size_t *return_len) |
| 4607 | { |
| 4608 | sip_payload_t const *pl = sip->sip_payload; |
| 4609 | sip_content_type_t const *ct = sip->sip_content_type; |
| 4610 | int matching_content_type = 0; |
| 4611 | |
| 4612 | if (pl == NULL((void*)0)) |
| 4613 | return 0; |
| 4614 | else if (pl->pl_len == 0 || pl->pl_data == NULL((void*)0)) |
| 4615 | return 0; |
| 4616 | else if (ct == NULL((void*)0)) |
| 4617 | /* Be bug-compatible with our old gateways */ |
| 4618 | SU_DEBUG_3(("nua: no %s, assuming %s\n",((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 4619, "nua: no %s, assuming %s\n", "Content-Type" , nua_application_sdp)) : (void)0) |
| 4619 | "Content-Type", SDP_MIME_TYPE))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 4619, "nua: no %s, assuming %s\n", "Content-Type" , nua_application_sdp)) : (void)0); |
| 4620 | else if (ct->c_type == NULL((void*)0)) |
| 4621 | SU_DEBUG_3(("nua: empty %s, assuming %s\n",((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 4622, "nua: empty %s, assuming %s\n" , "Content-Type", nua_application_sdp)) : (void)0) |
| 4622 | "Content-Type", SDP_MIME_TYPE))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 3 ? (_su_llog((nua_log), 3, "nua_session.c" , (const char *)__func__, 4622, "nua: empty %s, assuming %s\n" , "Content-Type", nua_application_sdp)) : (void)0); |
| 4623 | else if (!su_casematch(ct->c_type, SDP_MIME_TYPEnua_application_sdp)) { |
| 4624 | SU_DEBUG_5(("nua: unknown %s: %s\n", "Content-Type", ct->c_type))((((nua_log) != ((void*)0) && (nua_log)->log_init) == 0 ? 9 : (((nua_log) != ((void*)0) && (nua_log)-> log_init > 1) ? (nua_log)->log_level : su_log_default-> log_level)) >= 5 ? (_su_llog((nua_log), 5, "nua_session.c" , (const char *)__func__, 4624, "nua: unknown %s: %s\n", "Content-Type" , ct->c_type)) : (void)0); |
| 4625 | return 0; |
| 4626 | } |
| 4627 | else |
| 4628 | matching_content_type = 1; |
| 4629 | |
| 4630 | if (pl == NULL((void*)0)) |
| 4631 | return 0; |
| 4632 | |
| 4633 | if (!matching_content_type) { |
| 4634 | /* Make sure we got SDP */ |
| 4635 | if (pl->pl_len < 3 || !su_casenmatch(pl->pl_data, "v=0", 3)) |
| 4636 | return 0; |
| 4637 | } |
| 4638 | |
| 4639 | if (return_sdp && return_len) { |
| 4640 | *return_sdp = pl->pl_data; |
| 4641 | *return_len = pl->pl_len; |
| 4642 | } |
| 4643 | |
| 4644 | return 1; |
| 4645 | } |
| 4646 | |
| 4647 | /** Insert SDP into SIP message */ |
| 4648 | static |
| 4649 | int session_include_description(soa_session_t *soa, |
| 4650 | int session, |
| 4651 | msg_t *msg, |
| 4652 | sip_t *sip) |
| 4653 | { |
| 4654 | su_home_t *home = msg_home(msg)((su_home_t*)(msg)); |
| 4655 | |
| 4656 | sip_content_disposition_t *cd = NULL((void*)0); |
| 4657 | sip_content_type_t *ct = NULL((void*)0); |
| 4658 | sip_payload_t *pl = NULL((void*)0); |
| 4659 | |
| 4660 | int retval; |
| 4661 | |
| 4662 | if (!soa) |
| 4663 | return 0; |
| 4664 | |
| 4665 | retval = session_make_description(home, soa, session, &cd, &ct, &pl); |
| 4666 | |
| 4667 | if (retval <= 0) |
| 4668 | return retval; |
| 4669 | |
| 4670 | if ((cd && sip_header_insert(msg, sip, (sip_header_t *)cd) < 0) || |
| 4671 | sip_header_insert(msg, sip, (sip_header_t *)ct) < 0 || |
| 4672 | sip_header_insert(msg, sip, (sip_header_t *)pl) < 0) |
| 4673 | return -1; |
| 4674 | |
| 4675 | return retval; |
| 4676 | } |
| 4677 | |
| 4678 | /** Generate SDP headers */ |
| 4679 | static |
| 4680 | int session_make_description(su_home_t *home, |
| 4681 | soa_session_t *soa, |
| 4682 | int session, |
| 4683 | sip_content_disposition_t **return_cd, |
| 4684 | sip_content_type_t **return_ct, |
| 4685 | sip_payload_t **return_pl) |
| 4686 | { |
| 4687 | char const *sdp; |
| 4688 | isize_t len; |
| 4689 | int retval; |
| 4690 | |
| 4691 | if (!soa) |
| 4692 | return 0; |
| 4693 | |
| 4694 | if (session) |
| 4695 | retval = soa_get_local_sdp(soa, 0, &sdp, &len); |
| 4696 | else |
| 4697 | retval = soa_get_capability_sdp(soa, 0, &sdp, &len); |
| 4698 | |
| 4699 | if (retval > 0) { |
| 4700 | *return_pl = sip_payload_create(home, sdp, len); |
| 4701 | *return_ct = sip_content_type_make(home, SDP_MIME_TYPEnua_application_sdp); |
| 4702 | if (session) |
| 4703 | *return_cd = sip_content_disposition_make(home, "session"); |
| 4704 | else |
| 4705 | *return_cd = NULL((void*)0); |
| 4706 | |
| 4707 | if (!*return_pl || !*return_ct) |
| 4708 | return -1; |
| 4709 | |
| 4710 | if (session && !*return_cd) |
| 4711 | return -1; |
| 4712 | } |
| 4713 | |
| 4714 | return retval; |
| 4715 | } |
| 4716 | |
| 4717 | /* ====================================================================== */ |
| 4718 | |
| 4719 | /** @NUA_EVENT nua_i_options |
| 4720 | * |
| 4721 | * Incoming OPTIONS request. The user-agent should respond to an OPTIONS |
| 4722 | * request with the same statuscode as it would respond to an INVITE |
| 4723 | * request. |
| 4724 | * |
| 4725 | * Stack responds automatically to OPTIONS request unless OPTIONS is |
| 4726 | * included in the set of application methods, set by NUTAG_APPL_METHOD(). |
| 4727 | * |
| 4728 | * The OPTIONS request does not create a dialog. Currently the processing |
| 4729 | * of incoming OPTIONS creates a new handle for each incoming request which |
| 4730 | * is not assiciated with an existing dialog. If the handle @a nh is not |
| 4731 | * bound, you should probably destroy it after responding to the OPTIONS |
| 4732 | * request. |
| 4733 | * |
| 4734 | * @param status status code of response sent automatically by stack |
| 4735 | * @param phrase a short textual description of @a status code |
| 4736 | * @param nh operation handle associated with the OPTIONS request |
| 4737 | * @param hmagic application context associated with the call |
| 4738 | * (NULL if outside session) |
| 4739 | * @param sip incoming OPTIONS request |
| 4740 | * @param tags empty |
| 4741 | * |
| 4742 | * @sa nua_respond(), nua_options(), #nua_r_options, @RFC3261 section 11.2 |
| 4743 | * |
| 4744 | * @END_NUA_EVENT |
| 4745 | */ |
| 4746 | |
| 4747 | int nua_options_server_respond(nua_server_request_t *sr, tagi_t const *tags); |
| 4748 | |
| 4749 | nua_server_methods_t const nua_options_server_methods = |
| 4750 | { |
| 4751 | SIP_METHOD_OPTIONSsip_method_options, "OPTIONS", |
| 4752 | nua_i_options, /* Event */ |
| 4753 | { |
| 4754 | 0, /* Do not create dialog */ |
| 4755 | 0, /* Initial request */ |
| 4756 | 0, /* Not a target refresh request */ |
| 4757 | 1, /* Add Contact */ |
| 4758 | }, |
| 4759 | nua_base_server_init((void*)0), |
| 4760 | nua_base_server_preprocess((void*)0), |
| 4761 | nua_base_server_params((void*)0), |
| 4762 | nua_options_server_respond, |
| 4763 | nua_base_server_report, |
| 4764 | }; |
| 4765 | |
| 4766 | /** @internal Respond to an OPTIONS request. |
| 4767 | * |
| 4768 | */ |
| 4769 | int nua_options_server_respond(nua_server_request_t *sr, tagi_t const *tags) |
| 4770 | { |
| 4771 | nua_handle_t *nh = sr->sr_owner; |
| 4772 | nua_t *nua = nh->nh_nua; |
| 4773 | |
| 4774 | if (200 <= sr->sr_status && sr->sr_status < 300) { |
| 4775 | msg_t *msg = sr->sr_response.msg; |
| 4776 | sip_t *sip = sr->sr_response.sip; |
| 4777 | |
| 4778 | sip_add_tl(msg, sip, SIPTAG_ACCEPT(nua->nua_invite_accept)siptag_accept, siptag_accept_v(nua->nua_invite_accept), TAG_END()(tag_type_t)0, (tag_value_t)0); |
| 4779 | |
| 4780 | if (!sip->sip_payload) { /* XXX - do MIME multipart? */ |
| 4781 | soa_session_t *soa = nh->nh_soa; |
| 4782 | |
| 4783 | if (soa == NULL((void*)0)) |
| 4784 | soa = nua->nua_dhandlenua_handles->nh_soa; |
| 4785 | |
| 4786 | session_include_description(soa, 0, msg, sip); |
| 4787 | } |
| 4788 | } |
| 4789 | |
| 4790 | return nua_base_server_respond(sr, tags); |
| 4791 | } |