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| 1 /* | |
| 2 * Copyright 2010 The WebRTC Project Authors. All rights reserved. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license | |
| 5 * that can be found in the LICENSE file in the root of the source | |
| 6 * tree. An additional intellectual property rights grant can be found | |
| 7 * in the file PATENTS. All contributing project authors may | |
| 8 * be found in the AUTHORS file in the root of the source tree. | |
| 9 */ | |
| 10 | |
| 11 #include "webrtc/libjingle/session/sessionmessages.h" | |
| 12 | |
| 13 #include <stdio.h> | |
| 14 #include <string> | |
| 15 | |
| 16 #include "webrtc/base/logging.h" | |
| 17 #include "webrtc/base/scoped_ptr.h" | |
| 18 #include "webrtc/base/stringutils.h" | |
| 19 #include "webrtc/libjingle/session/parsing.h" | |
| 20 #include "webrtc/libjingle/session/sessionclient.h" | |
| 21 #include "webrtc/libjingle/xmllite/xmlconstants.h" | |
| 22 #include "webrtc/libjingle/xmpp/constants.h" | |
| 23 #include "webrtc/p2p/base/constants.h" | |
| 24 #include "webrtc/p2p/base/p2ptransport.h" | |
| 25 #include "webrtc/p2p/base/sessiondescription.h" | |
| 26 #include "webrtc/p2p/base/transport.h" | |
| 27 | |
| 28 namespace cricket { | |
| 29 | |
| 30 ActionType ToActionType(const std::string& type) { | |
| 31 if (type == GINGLE_ACTION_INITIATE) | |
| 32 return ACTION_SESSION_INITIATE; | |
| 33 if (type == GINGLE_ACTION_INFO) | |
| 34 return ACTION_SESSION_INFO; | |
| 35 if (type == GINGLE_ACTION_ACCEPT) | |
| 36 return ACTION_SESSION_ACCEPT; | |
| 37 if (type == GINGLE_ACTION_REJECT) | |
| 38 return ACTION_SESSION_REJECT; | |
| 39 if (type == GINGLE_ACTION_TERMINATE) | |
| 40 return ACTION_SESSION_TERMINATE; | |
| 41 if (type == GINGLE_ACTION_CANDIDATES) | |
| 42 return ACTION_TRANSPORT_INFO; | |
| 43 if (type == JINGLE_ACTION_SESSION_INITIATE) | |
| 44 return ACTION_SESSION_INITIATE; | |
| 45 if (type == JINGLE_ACTION_TRANSPORT_INFO) | |
| 46 return ACTION_TRANSPORT_INFO; | |
| 47 if (type == JINGLE_ACTION_TRANSPORT_ACCEPT) | |
| 48 return ACTION_TRANSPORT_ACCEPT; | |
| 49 if (type == JINGLE_ACTION_SESSION_INFO) | |
| 50 return ACTION_SESSION_INFO; | |
| 51 if (type == JINGLE_ACTION_SESSION_ACCEPT) | |
| 52 return ACTION_SESSION_ACCEPT; | |
| 53 if (type == JINGLE_ACTION_SESSION_TERMINATE) | |
| 54 return ACTION_SESSION_TERMINATE; | |
| 55 if (type == JINGLE_ACTION_TRANSPORT_INFO) | |
| 56 return ACTION_TRANSPORT_INFO; | |
| 57 if (type == JINGLE_ACTION_TRANSPORT_ACCEPT) | |
| 58 return ACTION_TRANSPORT_ACCEPT; | |
| 59 if (type == JINGLE_ACTION_DESCRIPTION_INFO) | |
| 60 return ACTION_DESCRIPTION_INFO; | |
| 61 if (type == GINGLE_ACTION_UPDATE) | |
| 62 return ACTION_DESCRIPTION_INFO; | |
| 63 | |
| 64 return ACTION_UNKNOWN; | |
| 65 } | |
| 66 | |
| 67 std::string ToJingleString(ActionType type) { | |
| 68 switch (type) { | |
| 69 case ACTION_SESSION_INITIATE: | |
| 70 return JINGLE_ACTION_SESSION_INITIATE; | |
| 71 case ACTION_SESSION_INFO: | |
| 72 return JINGLE_ACTION_SESSION_INFO; | |
| 73 case ACTION_DESCRIPTION_INFO: | |
| 74 return JINGLE_ACTION_DESCRIPTION_INFO; | |
| 75 case ACTION_SESSION_ACCEPT: | |
| 76 return JINGLE_ACTION_SESSION_ACCEPT; | |
| 77 // Notice that reject and terminate both go to | |
| 78 // "session-terminate", but there is no "session-reject". | |
| 79 case ACTION_SESSION_REJECT: | |
| 80 case ACTION_SESSION_TERMINATE: | |
| 81 return JINGLE_ACTION_SESSION_TERMINATE; | |
| 82 case ACTION_TRANSPORT_INFO: | |
| 83 return JINGLE_ACTION_TRANSPORT_INFO; | |
| 84 case ACTION_TRANSPORT_ACCEPT: | |
| 85 return JINGLE_ACTION_TRANSPORT_ACCEPT; | |
| 86 default: | |
| 87 return ""; | |
| 88 } | |
| 89 } | |
| 90 | |
| 91 std::string ToGingleString(ActionType type) { | |
| 92 switch (type) { | |
| 93 case ACTION_SESSION_INITIATE: | |
| 94 return GINGLE_ACTION_INITIATE; | |
| 95 case ACTION_SESSION_INFO: | |
| 96 return GINGLE_ACTION_INFO; | |
| 97 case ACTION_SESSION_ACCEPT: | |
| 98 return GINGLE_ACTION_ACCEPT; | |
| 99 case ACTION_SESSION_REJECT: | |
| 100 return GINGLE_ACTION_REJECT; | |
| 101 case ACTION_SESSION_TERMINATE: | |
| 102 return GINGLE_ACTION_TERMINATE; | |
| 103 case ACTION_TRANSPORT_INFO: | |
| 104 return GINGLE_ACTION_CANDIDATES; | |
| 105 default: | |
| 106 return ""; | |
| 107 } | |
| 108 } | |
| 109 | |
| 110 | |
| 111 bool IsJingleMessage(const buzz::XmlElement* stanza) { | |
| 112 const buzz::XmlElement* jingle = stanza->FirstNamed(QN_JINGLE); | |
| 113 if (jingle == NULL) | |
| 114 return false; | |
| 115 | |
| 116 return (jingle->HasAttr(buzz::QN_ACTION) && jingle->HasAttr(QN_SID)); | |
| 117 } | |
| 118 | |
| 119 bool IsGingleMessage(const buzz::XmlElement* stanza) { | |
| 120 const buzz::XmlElement* session = stanza->FirstNamed(QN_GINGLE_SESSION); | |
| 121 if (session == NULL) | |
| 122 return false; | |
| 123 | |
| 124 return (session->HasAttr(buzz::QN_TYPE) && | |
| 125 session->HasAttr(buzz::QN_ID) && | |
| 126 session->HasAttr(QN_INITIATOR)); | |
| 127 } | |
| 128 | |
| 129 bool IsSessionMessage(const buzz::XmlElement* stanza) { | |
| 130 return (stanza->Name() == buzz::QN_IQ && | |
| 131 stanza->Attr(buzz::QN_TYPE) == buzz::STR_SET && | |
| 132 (IsJingleMessage(stanza) || | |
| 133 IsGingleMessage(stanza))); | |
| 134 } | |
| 135 | |
| 136 bool ParseGingleSessionMessage(const buzz::XmlElement* session, | |
| 137 SessionMessage* msg, | |
| 138 ParseError* error) { | |
| 139 msg->protocol = PROTOCOL_GINGLE; | |
| 140 std::string type_string = session->Attr(buzz::QN_TYPE); | |
| 141 msg->type = ToActionType(type_string); | |
| 142 msg->sid = session->Attr(buzz::QN_ID); | |
| 143 msg->initiator = session->Attr(QN_INITIATOR); | |
| 144 msg->action_elem = session; | |
| 145 | |
| 146 if (msg->type == ACTION_UNKNOWN) | |
| 147 return BadParse("unknown action: " + type_string, error); | |
| 148 | |
| 149 return true; | |
| 150 } | |
| 151 | |
| 152 bool ParseJingleSessionMessage(const buzz::XmlElement* jingle, | |
| 153 SessionMessage* msg, | |
| 154 ParseError* error) { | |
| 155 msg->protocol = PROTOCOL_JINGLE; | |
| 156 std::string type_string = jingle->Attr(buzz::QN_ACTION); | |
| 157 msg->type = ToActionType(type_string); | |
| 158 msg->sid = jingle->Attr(QN_SID); | |
| 159 msg->initiator = GetXmlAttr(jingle, QN_INITIATOR, buzz::STR_EMPTY); | |
| 160 msg->action_elem = jingle; | |
| 161 | |
| 162 if (msg->type == ACTION_UNKNOWN) | |
| 163 return BadParse("unknown action: " + type_string, error); | |
| 164 | |
| 165 return true; | |
| 166 } | |
| 167 | |
| 168 bool ParseHybridSessionMessage(const buzz::XmlElement* jingle, | |
| 169 SessionMessage* msg, | |
| 170 ParseError* error) { | |
| 171 if (!ParseJingleSessionMessage(jingle, msg, error)) | |
| 172 return false; | |
| 173 msg->protocol = PROTOCOL_HYBRID; | |
| 174 | |
| 175 return true; | |
| 176 } | |
| 177 | |
| 178 bool ParseSessionMessage(const buzz::XmlElement* stanza, | |
| 179 SessionMessage* msg, | |
| 180 ParseError* error) { | |
| 181 msg->id = stanza->Attr(buzz::QN_ID); | |
| 182 msg->from = stanza->Attr(buzz::QN_FROM); | |
| 183 msg->to = stanza->Attr(buzz::QN_TO); | |
| 184 msg->stanza = stanza; | |
| 185 | |
| 186 const buzz::XmlElement* jingle = stanza->FirstNamed(QN_JINGLE); | |
| 187 const buzz::XmlElement* session = stanza->FirstNamed(QN_GINGLE_SESSION); | |
| 188 if (jingle && session) | |
| 189 return ParseHybridSessionMessage(jingle, msg, error); | |
| 190 if (jingle != NULL) | |
| 191 return ParseJingleSessionMessage(jingle, msg, error); | |
| 192 if (session != NULL) | |
| 193 return ParseGingleSessionMessage(session, msg, error); | |
| 194 return false; | |
| 195 } | |
| 196 | |
| 197 buzz::XmlElement* WriteGingleAction(const SessionMessage& msg, | |
| 198 const XmlElements& action_elems) { | |
| 199 buzz::XmlElement* session = new buzz::XmlElement(QN_GINGLE_SESSION, true); | |
| 200 session->AddAttr(buzz::QN_TYPE, ToGingleString(msg.type)); | |
| 201 session->AddAttr(buzz::QN_ID, msg.sid); | |
| 202 session->AddAttr(QN_INITIATOR, msg.initiator); | |
| 203 AddXmlChildren(session, action_elems); | |
| 204 return session; | |
| 205 } | |
| 206 | |
| 207 buzz::XmlElement* WriteJingleAction(const SessionMessage& msg, | |
| 208 const XmlElements& action_elems) { | |
| 209 buzz::XmlElement* jingle = new buzz::XmlElement(QN_JINGLE, true); | |
| 210 jingle->AddAttr(buzz::QN_ACTION, ToJingleString(msg.type)); | |
| 211 jingle->AddAttr(QN_SID, msg.sid); | |
| 212 if (msg.type == ACTION_SESSION_INITIATE) { | |
| 213 jingle->AddAttr(QN_INITIATOR, msg.initiator); | |
| 214 } | |
| 215 AddXmlChildren(jingle, action_elems); | |
| 216 return jingle; | |
| 217 } | |
| 218 | |
| 219 void WriteSessionMessage(const SessionMessage& msg, | |
| 220 const XmlElements& action_elems, | |
| 221 buzz::XmlElement* stanza) { | |
| 222 stanza->SetAttr(buzz::QN_TO, msg.to); | |
| 223 stanza->SetAttr(buzz::QN_TYPE, buzz::STR_SET); | |
| 224 | |
| 225 if (msg.protocol == PROTOCOL_GINGLE) { | |
| 226 stanza->AddElement(WriteGingleAction(msg, action_elems)); | |
| 227 } else { | |
| 228 stanza->AddElement(WriteJingleAction(msg, action_elems)); | |
| 229 } | |
| 230 } | |
| 231 | |
| 232 | |
| 233 TransportParser* GetTransportParser(const TransportParserMap& trans_parsers, | |
| 234 const std::string& transport_type) { | |
| 235 TransportParserMap::const_iterator map = trans_parsers.find(transport_type); | |
| 236 if (map == trans_parsers.end()) { | |
| 237 return NULL; | |
| 238 } else { | |
| 239 return map->second; | |
| 240 } | |
| 241 } | |
| 242 | |
| 243 CandidateTranslator* GetCandidateTranslator( | |
| 244 const CandidateTranslatorMap& translators, | |
| 245 const std::string& content_name) { | |
| 246 CandidateTranslatorMap::const_iterator map = translators.find(content_name); | |
| 247 if (map == translators.end()) { | |
| 248 return NULL; | |
| 249 } else { | |
| 250 return map->second; | |
| 251 } | |
| 252 } | |
| 253 | |
| 254 bool GetParserAndTranslator(const TransportParserMap& trans_parsers, | |
| 255 const CandidateTranslatorMap& translators, | |
| 256 const std::string& transport_type, | |
| 257 const std::string& content_name, | |
| 258 TransportParser** parser, | |
| 259 CandidateTranslator** translator, | |
| 260 ParseError* error) { | |
| 261 *parser = GetTransportParser(trans_parsers, transport_type); | |
| 262 if (*parser == NULL) { | |
| 263 return BadParse("unknown transport type: " + transport_type, error); | |
| 264 } | |
| 265 // Not having a translator isn't fatal when parsing. If this is called for an | |
| 266 // initiate message, we won't have our proxies set up to do the translation. | |
| 267 // Fortunately, for the cases where translation is needed, candidates are | |
| 268 // never sent in initiates. | |
| 269 *translator = GetCandidateTranslator(translators, content_name); | |
| 270 return true; | |
| 271 } | |
| 272 | |
| 273 bool GetParserAndTranslator(const TransportParserMap& trans_parsers, | |
| 274 const CandidateTranslatorMap& translators, | |
| 275 const std::string& transport_type, | |
| 276 const std::string& content_name, | |
| 277 TransportParser** parser, | |
| 278 CandidateTranslator** translator, | |
| 279 WriteError* error) { | |
| 280 *parser = GetTransportParser(trans_parsers, transport_type); | |
| 281 if (*parser == NULL) { | |
| 282 return BadWrite("unknown transport type: " + transport_type, error); | |
| 283 } | |
| 284 *translator = GetCandidateTranslator(translators, content_name); | |
| 285 if (*translator == NULL) { | |
| 286 return BadWrite("unknown content name: " + content_name, error); | |
| 287 } | |
| 288 return true; | |
| 289 } | |
| 290 | |
| 291 bool ParseGingleCandidate(const buzz::XmlElement* candidate_elem, | |
| 292 const TransportParserMap& trans_parsers, | |
| 293 const CandidateTranslatorMap& translators, | |
| 294 const std::string& content_name, | |
| 295 Candidates* candidates, | |
| 296 ParseError* error) { | |
| 297 TransportParser* trans_parser; | |
| 298 CandidateTranslator* translator; | |
| 299 if (!GetParserAndTranslator(trans_parsers, translators, | |
| 300 NS_GINGLE_P2P, content_name, | |
| 301 &trans_parser, &translator, error)) | |
| 302 return false; | |
| 303 | |
| 304 Candidate candidate; | |
| 305 if (!trans_parser->ParseGingleCandidate( | |
| 306 candidate_elem, translator, &candidate, error)) { | |
| 307 return false; | |
| 308 } | |
| 309 | |
| 310 candidates->push_back(candidate); | |
| 311 return true; | |
| 312 } | |
| 313 | |
| 314 bool ParseGingleCandidates(const buzz::XmlElement* parent, | |
| 315 const TransportParserMap& trans_parsers, | |
| 316 const CandidateTranslatorMap& translators, | |
| 317 const std::string& content_name, | |
| 318 Candidates* candidates, | |
| 319 ParseError* error) { | |
| 320 for (const buzz::XmlElement* candidate_elem = parent->FirstElement(); | |
| 321 candidate_elem != NULL; | |
| 322 candidate_elem = candidate_elem->NextElement()) { | |
| 323 if (candidate_elem->Name().LocalPart() == LN_CANDIDATE) { | |
| 324 if (!ParseGingleCandidate(candidate_elem, trans_parsers, translators, | |
| 325 content_name, candidates, error)) { | |
| 326 return false; | |
| 327 } | |
| 328 } | |
| 329 } | |
| 330 return true; | |
| 331 } | |
| 332 | |
| 333 bool ParseGingleTransportInfos(const buzz::XmlElement* action_elem, | |
| 334 const ContentInfos& contents, | |
| 335 const TransportParserMap& trans_parsers, | |
| 336 const CandidateTranslatorMap& translators, | |
| 337 TransportInfos* tinfos, | |
| 338 ParseError* error) { | |
| 339 bool has_audio = FindContentInfoByName(contents, CN_AUDIO) != NULL; | |
| 340 bool has_video = FindContentInfoByName(contents, CN_VIDEO) != NULL; | |
| 341 | |
| 342 // If we don't have media, no need to separate the candidates. | |
| 343 if (!has_audio && !has_video) { | |
| 344 TransportInfo tinfo(CN_OTHER, | |
| 345 TransportDescription(NS_GINGLE_P2P, std::string(), std::string())); | |
| 346 if (!ParseGingleCandidates(action_elem, trans_parsers, translators, | |
| 347 CN_OTHER, &tinfo.description.candidates, | |
| 348 error)) { | |
| 349 return false; | |
| 350 } | |
| 351 | |
| 352 tinfos->push_back(tinfo); | |
| 353 return true; | |
| 354 } | |
| 355 | |
| 356 // If we have media, separate the candidates. | |
| 357 TransportInfo audio_tinfo( | |
| 358 CN_AUDIO, | |
| 359 TransportDescription(NS_GINGLE_P2P, std::string(), std::string())); | |
| 360 TransportInfo video_tinfo( | |
| 361 CN_VIDEO, | |
| 362 TransportDescription(NS_GINGLE_P2P, std::string(), std::string())); | |
| 363 for (const buzz::XmlElement* candidate_elem = action_elem->FirstElement(); | |
| 364 candidate_elem != NULL; | |
| 365 candidate_elem = candidate_elem->NextElement()) { | |
| 366 if (candidate_elem->Name().LocalPart() == LN_CANDIDATE) { | |
| 367 const std::string& channel_name = candidate_elem->Attr(buzz::QN_NAME); | |
| 368 if (has_audio && | |
| 369 (channel_name == GICE_CHANNEL_NAME_RTP || | |
| 370 channel_name == GICE_CHANNEL_NAME_RTCP)) { | |
| 371 if (!ParseGingleCandidate( | |
| 372 candidate_elem, trans_parsers, | |
| 373 translators, CN_AUDIO, | |
| 374 &audio_tinfo.description.candidates, error)) { | |
| 375 return false; | |
| 376 } | |
| 377 } else if (has_video && | |
| 378 (channel_name == GICE_CHANNEL_NAME_VIDEO_RTP || | |
| 379 channel_name == GICE_CHANNEL_NAME_VIDEO_RTCP)) { | |
| 380 if (!ParseGingleCandidate( | |
| 381 candidate_elem, trans_parsers, | |
| 382 translators, CN_VIDEO, | |
| 383 &video_tinfo.description.candidates, error)) { | |
| 384 return false; | |
| 385 } | |
| 386 } else { | |
| 387 return BadParse("Unknown channel name: " + channel_name, error); | |
| 388 } | |
| 389 } | |
| 390 } | |
| 391 | |
| 392 if (has_audio) { | |
| 393 tinfos->push_back(audio_tinfo); | |
| 394 } | |
| 395 if (has_video) { | |
| 396 tinfos->push_back(video_tinfo); | |
| 397 } | |
| 398 return true; | |
| 399 } | |
| 400 | |
| 401 bool ParseJingleTransportInfo(const buzz::XmlElement* trans_elem, | |
| 402 const std::string& content_name, | |
| 403 const TransportParserMap& trans_parsers, | |
| 404 const CandidateTranslatorMap& translators, | |
| 405 TransportInfo* tinfo, | |
| 406 ParseError* error) { | |
| 407 TransportParser* trans_parser; | |
| 408 CandidateTranslator* translator; | |
| 409 if (!GetParserAndTranslator(trans_parsers, translators, | |
| 410 trans_elem->Name().Namespace(), content_name, | |
| 411 &trans_parser, &translator, error)) | |
| 412 return false; | |
| 413 | |
| 414 TransportDescription tdesc; | |
| 415 if (!trans_parser->ParseTransportDescription(trans_elem, translator, | |
| 416 &tdesc, error)) | |
| 417 return false; | |
| 418 | |
| 419 *tinfo = TransportInfo(content_name, tdesc); | |
| 420 return true; | |
| 421 } | |
| 422 | |
| 423 bool ParseJingleTransportInfos(const buzz::XmlElement* jingle, | |
| 424 const ContentInfos& contents, | |
| 425 const TransportParserMap trans_parsers, | |
| 426 const CandidateTranslatorMap& translators, | |
| 427 TransportInfos* tinfos, | |
| 428 ParseError* error) { | |
| 429 for (const buzz::XmlElement* pair_elem | |
| 430 = jingle->FirstNamed(QN_JINGLE_CONTENT); | |
| 431 pair_elem != NULL; | |
| 432 pair_elem = pair_elem->NextNamed(QN_JINGLE_CONTENT)) { | |
| 433 std::string content_name; | |
| 434 if (!RequireXmlAttr(pair_elem, QN_JINGLE_CONTENT_NAME, | |
| 435 &content_name, error)) | |
| 436 return false; | |
| 437 | |
| 438 const ContentInfo* content = FindContentInfoByName(contents, content_name); | |
| 439 if (!content) | |
| 440 return BadParse("Unknown content name: " + content_name, error); | |
| 441 | |
| 442 const buzz::XmlElement* trans_elem; | |
| 443 if (!RequireXmlChild(pair_elem, LN_TRANSPORT, &trans_elem, error)) | |
| 444 return false; | |
| 445 | |
| 446 TransportInfo tinfo; | |
| 447 if (!ParseJingleTransportInfo(trans_elem, content->name, | |
| 448 trans_parsers, translators, | |
| 449 &tinfo, error)) | |
| 450 return false; | |
| 451 | |
| 452 tinfos->push_back(tinfo); | |
| 453 } | |
| 454 | |
| 455 return true; | |
| 456 } | |
| 457 | |
| 458 buzz::XmlElement* NewTransportElement(const std::string& name) { | |
| 459 return new buzz::XmlElement(buzz::QName(name, LN_TRANSPORT), true); | |
| 460 } | |
| 461 | |
| 462 bool WriteGingleCandidates(const Candidates& candidates, | |
| 463 const TransportParserMap& trans_parsers, | |
| 464 const std::string& transport_type, | |
| 465 const CandidateTranslatorMap& translators, | |
| 466 const std::string& content_name, | |
| 467 XmlElements* elems, | |
| 468 WriteError* error) { | |
| 469 TransportParser* trans_parser; | |
| 470 CandidateTranslator* translator; | |
| 471 if (!GetParserAndTranslator(trans_parsers, translators, | |
| 472 transport_type, content_name, | |
| 473 &trans_parser, &translator, error)) | |
| 474 return false; | |
| 475 | |
| 476 for (size_t i = 0; i < candidates.size(); ++i) { | |
| 477 rtc::scoped_ptr<buzz::XmlElement> element; | |
| 478 if (!trans_parser->WriteGingleCandidate(candidates[i], translator, | |
| 479 element.accept(), error)) { | |
| 480 return false; | |
| 481 } | |
| 482 | |
| 483 elems->push_back(element.release()); | |
| 484 } | |
| 485 | |
| 486 return true; | |
| 487 } | |
| 488 | |
| 489 bool WriteGingleTransportInfos(const TransportInfos& tinfos, | |
| 490 const TransportParserMap& trans_parsers, | |
| 491 const CandidateTranslatorMap& translators, | |
| 492 XmlElements* elems, | |
| 493 WriteError* error) { | |
| 494 for (TransportInfos::const_iterator tinfo = tinfos.begin(); | |
| 495 tinfo != tinfos.end(); ++tinfo) { | |
| 496 if (!WriteGingleCandidates(tinfo->description.candidates, | |
| 497 trans_parsers, tinfo->description.transport_type, | |
| 498 translators, tinfo->content_name, | |
| 499 elems, error)) | |
| 500 return false; | |
| 501 } | |
| 502 | |
| 503 return true; | |
| 504 } | |
| 505 | |
| 506 bool WriteJingleTransportInfo(const TransportInfo& tinfo, | |
| 507 const TransportParserMap& trans_parsers, | |
| 508 const CandidateTranslatorMap& translators, | |
| 509 XmlElements* elems, | |
| 510 WriteError* error) { | |
| 511 std::string transport_type = tinfo.description.transport_type; | |
| 512 TransportParser* trans_parser; | |
| 513 CandidateTranslator* translator; | |
| 514 if (!GetParserAndTranslator(trans_parsers, translators, | |
| 515 transport_type, tinfo.content_name, | |
| 516 &trans_parser, &translator, error)) | |
| 517 return false; | |
| 518 | |
| 519 buzz::XmlElement* trans_elem; | |
| 520 if (!trans_parser->WriteTransportDescription(tinfo.description, translator, | |
| 521 &trans_elem, error)) { | |
| 522 return false; | |
| 523 } | |
| 524 | |
| 525 elems->push_back(trans_elem); | |
| 526 return true; | |
| 527 } | |
| 528 | |
| 529 void WriteJingleContent(const std::string name, | |
| 530 const XmlElements& child_elems, | |
| 531 XmlElements* elems) { | |
| 532 buzz::XmlElement* content_elem = new buzz::XmlElement(QN_JINGLE_CONTENT); | |
| 533 content_elem->SetAttr(QN_JINGLE_CONTENT_NAME, name); | |
| 534 content_elem->SetAttr(QN_CREATOR, LN_INITIATOR); | |
| 535 AddXmlChildren(content_elem, child_elems); | |
| 536 | |
| 537 elems->push_back(content_elem); | |
| 538 } | |
| 539 | |
| 540 bool WriteJingleTransportInfos(const TransportInfos& tinfos, | |
| 541 const TransportParserMap& trans_parsers, | |
| 542 const CandidateTranslatorMap& translators, | |
| 543 XmlElements* elems, | |
| 544 WriteError* error) { | |
| 545 for (TransportInfos::const_iterator tinfo = tinfos.begin(); | |
| 546 tinfo != tinfos.end(); ++tinfo) { | |
| 547 XmlElements content_child_elems; | |
| 548 if (!WriteJingleTransportInfo(*tinfo, trans_parsers, translators, | |
| 549 &content_child_elems, error)) | |
| 550 | |
| 551 return false; | |
| 552 | |
| 553 WriteJingleContent(tinfo->content_name, content_child_elems, elems); | |
| 554 } | |
| 555 | |
| 556 return true; | |
| 557 } | |
| 558 | |
| 559 ContentParser* GetContentParser(const ContentParserMap& content_parsers, | |
| 560 const std::string& type) { | |
| 561 ContentParserMap::const_iterator map = content_parsers.find(type); | |
| 562 if (map == content_parsers.end()) { | |
| 563 return NULL; | |
| 564 } else { | |
| 565 return map->second; | |
| 566 } | |
| 567 } | |
| 568 | |
| 569 bool ParseContentInfo(SignalingProtocol protocol, | |
| 570 const std::string& name, | |
| 571 const std::string& type, | |
| 572 const buzz::XmlElement* elem, | |
| 573 const ContentParserMap& parsers, | |
| 574 ContentInfos* contents, | |
| 575 ParseError* error) { | |
| 576 ContentParser* parser = GetContentParser(parsers, type); | |
| 577 if (parser == NULL) | |
| 578 return BadParse("unknown application content: " + type, error); | |
| 579 | |
| 580 ContentDescription* desc; | |
| 581 if (!parser->ParseContent(protocol, elem, &desc, error)) | |
| 582 return false; | |
| 583 | |
| 584 contents->push_back(ContentInfo(name, type, desc)); | |
| 585 return true; | |
| 586 } | |
| 587 | |
| 588 bool ParseContentType(const buzz::XmlElement* parent_elem, | |
| 589 std::string* content_type, | |
| 590 const buzz::XmlElement** content_elem, | |
| 591 ParseError* error) { | |
| 592 if (!RequireXmlChild(parent_elem, LN_DESCRIPTION, content_elem, error)) | |
| 593 return false; | |
| 594 | |
| 595 *content_type = (*content_elem)->Name().Namespace(); | |
| 596 return true; | |
| 597 } | |
| 598 | |
| 599 bool ParseGingleContentInfos(const buzz::XmlElement* session, | |
| 600 const ContentParserMap& content_parsers, | |
| 601 ContentInfos* contents, | |
| 602 ParseError* error) { | |
| 603 std::string content_type; | |
| 604 const buzz::XmlElement* content_elem; | |
| 605 if (!ParseContentType(session, &content_type, &content_elem, error)) | |
| 606 return false; | |
| 607 | |
| 608 if (content_type == NS_GINGLE_VIDEO) { | |
| 609 // A parser parsing audio or video content should look at the | |
| 610 // namespace and only parse the codecs relevant to that namespace. | |
| 611 // We use this to control which codecs get parsed: first audio, | |
| 612 // then video. | |
| 613 rtc::scoped_ptr<buzz::XmlElement> audio_elem( | |
| 614 new buzz::XmlElement(QN_GINGLE_AUDIO_CONTENT)); | |
| 615 CopyXmlChildren(content_elem, audio_elem.get()); | |
| 616 if (!ParseContentInfo(PROTOCOL_GINGLE, CN_AUDIO, NS_JINGLE_RTP, | |
| 617 audio_elem.get(), content_parsers, | |
| 618 contents, error)) | |
| 619 return false; | |
| 620 | |
| 621 if (!ParseContentInfo(PROTOCOL_GINGLE, CN_VIDEO, NS_JINGLE_RTP, | |
| 622 content_elem, content_parsers, | |
| 623 contents, error)) | |
| 624 return false; | |
| 625 } else if (content_type == NS_GINGLE_AUDIO) { | |
| 626 if (!ParseContentInfo(PROTOCOL_GINGLE, CN_AUDIO, NS_JINGLE_RTP, | |
| 627 content_elem, content_parsers, | |
| 628 contents, error)) | |
| 629 return false; | |
| 630 } else { | |
| 631 if (!ParseContentInfo(PROTOCOL_GINGLE, CN_OTHER, content_type, | |
| 632 content_elem, content_parsers, | |
| 633 contents, error)) | |
| 634 return false; | |
| 635 } | |
| 636 return true; | |
| 637 } | |
| 638 | |
| 639 bool ParseJingleContentInfos(const buzz::XmlElement* jingle, | |
| 640 const ContentParserMap& content_parsers, | |
| 641 ContentInfos* contents, | |
| 642 ParseError* error) { | |
| 643 for (const buzz::XmlElement* pair_elem | |
| 644 = jingle->FirstNamed(QN_JINGLE_CONTENT); | |
| 645 pair_elem != NULL; | |
| 646 pair_elem = pair_elem->NextNamed(QN_JINGLE_CONTENT)) { | |
| 647 std::string content_name; | |
| 648 if (!RequireXmlAttr(pair_elem, QN_JINGLE_CONTENT_NAME, | |
| 649 &content_name, error)) | |
| 650 return false; | |
| 651 | |
| 652 std::string content_type; | |
| 653 const buzz::XmlElement* content_elem; | |
| 654 if (!ParseContentType(pair_elem, &content_type, &content_elem, error)) | |
| 655 return false; | |
| 656 | |
| 657 if (!ParseContentInfo(PROTOCOL_JINGLE, content_name, content_type, | |
| 658 content_elem, content_parsers, | |
| 659 contents, error)) | |
| 660 return false; | |
| 661 } | |
| 662 return true; | |
| 663 } | |
| 664 | |
| 665 bool ParseJingleGroupInfos(const buzz::XmlElement* jingle, | |
| 666 ContentGroups* groups, | |
| 667 ParseError* error) { | |
| 668 for (const buzz::XmlElement* pair_elem | |
| 669 = jingle->FirstNamed(QN_JINGLE_DRAFT_GROUP); | |
| 670 pair_elem != NULL; | |
| 671 pair_elem = pair_elem->NextNamed(QN_JINGLE_DRAFT_GROUP)) { | |
| 672 std::string group_name; | |
| 673 if (!RequireXmlAttr(pair_elem, QN_JINGLE_DRAFT_GROUP_TYPE, | |
| 674 &group_name, error)) | |
| 675 return false; | |
| 676 | |
| 677 ContentGroup group(group_name); | |
| 678 for (const buzz::XmlElement* child_elem | |
| 679 = pair_elem->FirstNamed(QN_JINGLE_CONTENT); | |
| 680 child_elem != NULL; | |
| 681 child_elem = child_elem->NextNamed(QN_JINGLE_CONTENT)) { | |
| 682 std::string content_name; | |
| 683 if (!RequireXmlAttr(child_elem, QN_JINGLE_CONTENT_NAME, | |
| 684 &content_name, error)) | |
| 685 return false; | |
| 686 group.AddContentName(content_name); | |
| 687 } | |
| 688 groups->push_back(group); | |
| 689 } | |
| 690 return true; | |
| 691 } | |
| 692 | |
| 693 buzz::XmlElement* WriteContentInfo(SignalingProtocol protocol, | |
| 694 const ContentInfo& content, | |
| 695 const ContentParserMap& parsers, | |
| 696 WriteError* error) { | |
| 697 ContentParser* parser = GetContentParser(parsers, content.type); | |
| 698 if (parser == NULL) { | |
| 699 BadWrite("unknown content type: " + content.type, error); | |
| 700 return NULL; | |
| 701 } | |
| 702 | |
| 703 buzz::XmlElement* elem = NULL; | |
| 704 if (!parser->WriteContent(protocol, content.description, &elem, error)) | |
| 705 return NULL; | |
| 706 | |
| 707 return elem; | |
| 708 } | |
| 709 | |
| 710 bool IsWritable(SignalingProtocol protocol, | |
| 711 const ContentInfo& content, | |
| 712 const ContentParserMap& parsers) { | |
| 713 ContentParser* parser = GetContentParser(parsers, content.type); | |
| 714 if (parser == NULL) { | |
| 715 return false; | |
| 716 } | |
| 717 | |
| 718 return parser->IsWritable(protocol, content.description); | |
| 719 } | |
| 720 | |
| 721 bool WriteGingleContentInfos(const ContentInfos& contents, | |
| 722 const ContentParserMap& parsers, | |
| 723 XmlElements* elems, | |
| 724 WriteError* error) { | |
| 725 if (contents.size() == 1 || | |
| 726 (contents.size() == 2 && | |
| 727 !IsWritable(PROTOCOL_GINGLE, contents.at(1), parsers))) { | |
| 728 if (contents.front().rejected) { | |
| 729 return BadWrite("Gingle protocol may not reject individual contents.", | |
| 730 error); | |
| 731 } | |
| 732 buzz::XmlElement* elem = WriteContentInfo( | |
| 733 PROTOCOL_GINGLE, contents.front(), parsers, error); | |
| 734 if (!elem) | |
| 735 return false; | |
| 736 | |
| 737 elems->push_back(elem); | |
| 738 } else if (contents.size() >= 2 && | |
| 739 contents.at(0).type == NS_JINGLE_RTP && | |
| 740 contents.at(1).type == NS_JINGLE_RTP) { | |
| 741 // Special-case audio + video contents so that they are "merged" | |
| 742 // into one "video" content. | |
| 743 if (contents.at(0).rejected || contents.at(1).rejected) { | |
| 744 return BadWrite("Gingle protocol may not reject individual contents.", | |
| 745 error); | |
| 746 } | |
| 747 buzz::XmlElement* audio = WriteContentInfo( | |
| 748 PROTOCOL_GINGLE, contents.at(0), parsers, error); | |
| 749 if (!audio) | |
| 750 return false; | |
| 751 | |
| 752 buzz::XmlElement* video = WriteContentInfo( | |
| 753 PROTOCOL_GINGLE, contents.at(1), parsers, error); | |
| 754 if (!video) { | |
| 755 delete audio; | |
| 756 return false; | |
| 757 } | |
| 758 | |
| 759 CopyXmlChildren(audio, video); | |
| 760 elems->push_back(video); | |
| 761 delete audio; | |
| 762 } else { | |
| 763 return BadWrite("Gingle protocol may only have one content.", error); | |
| 764 } | |
| 765 | |
| 766 return true; | |
| 767 } | |
| 768 | |
| 769 const TransportInfo* GetTransportInfoByContentName( | |
| 770 const TransportInfos& tinfos, const std::string& content_name) { | |
| 771 for (TransportInfos::const_iterator tinfo = tinfos.begin(); | |
| 772 tinfo != tinfos.end(); ++tinfo) { | |
| 773 if (content_name == tinfo->content_name) { | |
| 774 return &*tinfo; | |
| 775 } | |
| 776 } | |
| 777 return NULL; | |
| 778 } | |
| 779 | |
| 780 bool WriteJingleContents(const ContentInfos& contents, | |
| 781 const ContentParserMap& content_parsers, | |
| 782 const TransportInfos& tinfos, | |
| 783 const TransportParserMap& trans_parsers, | |
| 784 const CandidateTranslatorMap& translators, | |
| 785 XmlElements* elems, | |
| 786 WriteError* error) { | |
| 787 for (ContentInfos::const_iterator content = contents.begin(); | |
| 788 content != contents.end(); ++content) { | |
| 789 if (content->rejected) { | |
| 790 continue; | |
| 791 } | |
| 792 const TransportInfo* tinfo = | |
| 793 GetTransportInfoByContentName(tinfos, content->name); | |
| 794 if (!tinfo) | |
| 795 return BadWrite("No transport for content: " + content->name, error); | |
| 796 | |
| 797 XmlElements pair_elems; | |
| 798 buzz::XmlElement* elem = WriteContentInfo( | |
| 799 PROTOCOL_JINGLE, *content, content_parsers, error); | |
| 800 if (!elem) | |
| 801 return false; | |
| 802 pair_elems.push_back(elem); | |
| 803 | |
| 804 if (!WriteJingleTransportInfo(*tinfo, trans_parsers, translators, | |
| 805 &pair_elems, error)) | |
| 806 return false; | |
| 807 | |
| 808 WriteJingleContent(content->name, pair_elems, elems); | |
| 809 } | |
| 810 return true; | |
| 811 } | |
| 812 | |
| 813 bool WriteJingleContentInfos(const ContentInfos& contents, | |
| 814 const ContentParserMap& content_parsers, | |
| 815 XmlElements* elems, | |
| 816 WriteError* error) { | |
| 817 for (ContentInfos::const_iterator content = contents.begin(); | |
| 818 content != contents.end(); ++content) { | |
| 819 if (content->rejected) { | |
| 820 continue; | |
| 821 } | |
| 822 XmlElements content_child_elems; | |
| 823 buzz::XmlElement* elem = WriteContentInfo( | |
| 824 PROTOCOL_JINGLE, *content, content_parsers, error); | |
| 825 if (!elem) | |
| 826 return false; | |
| 827 content_child_elems.push_back(elem); | |
| 828 WriteJingleContent(content->name, content_child_elems, elems); | |
| 829 } | |
| 830 return true; | |
| 831 } | |
| 832 | |
| 833 bool WriteJingleGroupInfo(const ContentInfos& contents, | |
| 834 const ContentGroups& groups, | |
| 835 XmlElements* elems, | |
| 836 WriteError* error) { | |
| 837 if (!groups.empty()) { | |
| 838 buzz::XmlElement* pair_elem = new buzz::XmlElement(QN_JINGLE_DRAFT_GROUP); | |
| 839 pair_elem->SetAttr(QN_JINGLE_DRAFT_GROUP_TYPE, GROUP_TYPE_BUNDLE); | |
| 840 | |
| 841 XmlElements pair_elems; | |
| 842 for (ContentInfos::const_iterator content = contents.begin(); | |
| 843 content != contents.end(); ++content) { | |
| 844 buzz::XmlElement* child_elem = | |
| 845 new buzz::XmlElement(QN_JINGLE_CONTENT, false); | |
| 846 child_elem->SetAttr(QN_JINGLE_CONTENT_NAME, content->name); | |
| 847 pair_elems.push_back(child_elem); | |
| 848 } | |
| 849 AddXmlChildren(pair_elem, pair_elems); | |
| 850 elems->push_back(pair_elem); | |
| 851 } | |
| 852 return true; | |
| 853 } | |
| 854 | |
| 855 bool ParseContentType(SignalingProtocol protocol, | |
| 856 const buzz::XmlElement* action_elem, | |
| 857 std::string* content_type, | |
| 858 ParseError* error) { | |
| 859 const buzz::XmlElement* content_elem; | |
| 860 if (protocol == PROTOCOL_GINGLE) { | |
| 861 if (!ParseContentType(action_elem, content_type, &content_elem, error)) | |
| 862 return false; | |
| 863 | |
| 864 // Internally, we only use NS_JINGLE_RTP. | |
| 865 if (*content_type == NS_GINGLE_AUDIO || | |
| 866 *content_type == NS_GINGLE_VIDEO) | |
| 867 *content_type = NS_JINGLE_RTP; | |
| 868 } else { | |
| 869 const buzz::XmlElement* pair_elem | |
| 870 = action_elem->FirstNamed(QN_JINGLE_CONTENT); | |
| 871 if (pair_elem == NULL) | |
| 872 return BadParse("No contents found", error); | |
| 873 | |
| 874 if (!ParseContentType(pair_elem, content_type, &content_elem, error)) | |
| 875 return false; | |
| 876 } | |
| 877 | |
| 878 return true; | |
| 879 } | |
| 880 | |
| 881 static bool ParseContentMessage( | |
| 882 SignalingProtocol protocol, | |
| 883 const buzz::XmlElement* action_elem, | |
| 884 bool expect_transports, | |
| 885 const ContentParserMap& content_parsers, | |
| 886 const TransportParserMap& trans_parsers, | |
| 887 const CandidateTranslatorMap& translators, | |
| 888 SessionInitiate* init, | |
| 889 ParseError* error) { | |
| 890 init->owns_contents = true; | |
| 891 if (protocol == PROTOCOL_GINGLE) { | |
| 892 if (!ParseGingleContentInfos(action_elem, content_parsers, | |
| 893 &init->contents, error)) | |
| 894 return false; | |
| 895 | |
| 896 if (expect_transports && | |
| 897 !ParseGingleTransportInfos(action_elem, init->contents, | |
| 898 trans_parsers, translators, | |
| 899 &init->transports, error)) | |
| 900 return false; | |
| 901 } else { | |
| 902 if (!ParseJingleContentInfos(action_elem, content_parsers, | |
| 903 &init->contents, error)) | |
| 904 return false; | |
| 905 if (!ParseJingleGroupInfos(action_elem, &init->groups, error)) | |
| 906 return false; | |
| 907 | |
| 908 if (expect_transports && | |
| 909 !ParseJingleTransportInfos(action_elem, init->contents, | |
| 910 trans_parsers, translators, | |
| 911 &init->transports, error)) | |
| 912 return false; | |
| 913 } | |
| 914 | |
| 915 return true; | |
| 916 } | |
| 917 | |
| 918 static bool WriteContentMessage( | |
| 919 SignalingProtocol protocol, | |
| 920 const ContentInfos& contents, | |
| 921 const TransportInfos& tinfos, | |
| 922 const ContentParserMap& content_parsers, | |
| 923 const TransportParserMap& transport_parsers, | |
| 924 const CandidateTranslatorMap& translators, | |
| 925 const ContentGroups& groups, | |
| 926 XmlElements* elems, | |
| 927 WriteError* error) { | |
| 928 if (protocol == PROTOCOL_GINGLE) { | |
| 929 if (!WriteGingleContentInfos(contents, content_parsers, elems, error)) | |
| 930 return false; | |
| 931 | |
| 932 if (!WriteGingleTransportInfos(tinfos, transport_parsers, translators, | |
| 933 elems, error)) | |
| 934 return false; | |
| 935 } else { | |
| 936 if (!WriteJingleContents(contents, content_parsers, | |
| 937 tinfos, transport_parsers, translators, | |
| 938 elems, error)) | |
| 939 return false; | |
| 940 if (!WriteJingleGroupInfo(contents, groups, elems, error)) | |
| 941 return false; | |
| 942 } | |
| 943 | |
| 944 return true; | |
| 945 } | |
| 946 | |
| 947 bool ParseSessionInitiate(SignalingProtocol protocol, | |
| 948 const buzz::XmlElement* action_elem, | |
| 949 const ContentParserMap& content_parsers, | |
| 950 const TransportParserMap& trans_parsers, | |
| 951 const CandidateTranslatorMap& translators, | |
| 952 SessionInitiate* init, | |
| 953 ParseError* error) { | |
| 954 bool expect_transports = true; | |
| 955 return ParseContentMessage(protocol, action_elem, expect_transports, | |
| 956 content_parsers, trans_parsers, translators, | |
| 957 init, error); | |
| 958 } | |
| 959 | |
| 960 | |
| 961 bool WriteSessionInitiate(SignalingProtocol protocol, | |
| 962 const ContentInfos& contents, | |
| 963 const TransportInfos& tinfos, | |
| 964 const ContentParserMap& content_parsers, | |
| 965 const TransportParserMap& transport_parsers, | |
| 966 const CandidateTranslatorMap& translators, | |
| 967 const ContentGroups& groups, | |
| 968 XmlElements* elems, | |
| 969 WriteError* error) { | |
| 970 return WriteContentMessage(protocol, contents, tinfos, | |
| 971 content_parsers, transport_parsers, translators, | |
| 972 groups, | |
| 973 elems, error); | |
| 974 } | |
| 975 | |
| 976 bool ParseSessionAccept(SignalingProtocol protocol, | |
| 977 const buzz::XmlElement* action_elem, | |
| 978 const ContentParserMap& content_parsers, | |
| 979 const TransportParserMap& transport_parsers, | |
| 980 const CandidateTranslatorMap& translators, | |
| 981 SessionAccept* accept, | |
| 982 ParseError* error) { | |
| 983 bool expect_transports = true; | |
| 984 return ParseContentMessage(protocol, action_elem, expect_transports, | |
| 985 content_parsers, transport_parsers, translators, | |
| 986 accept, error); | |
| 987 } | |
| 988 | |
| 989 bool WriteSessionAccept(SignalingProtocol protocol, | |
| 990 const ContentInfos& contents, | |
| 991 const TransportInfos& tinfos, | |
| 992 const ContentParserMap& content_parsers, | |
| 993 const TransportParserMap& transport_parsers, | |
| 994 const CandidateTranslatorMap& translators, | |
| 995 const ContentGroups& groups, | |
| 996 XmlElements* elems, | |
| 997 WriteError* error) { | |
| 998 return WriteContentMessage(protocol, contents, tinfos, | |
| 999 content_parsers, transport_parsers, translators, | |
| 1000 groups, | |
| 1001 elems, error); | |
| 1002 } | |
| 1003 | |
| 1004 bool ParseSessionTerminate(SignalingProtocol protocol, | |
| 1005 const buzz::XmlElement* action_elem, | |
| 1006 SessionTerminate* term, | |
| 1007 ParseError* error) { | |
| 1008 if (protocol == PROTOCOL_GINGLE) { | |
| 1009 const buzz::XmlElement* reason_elem = action_elem->FirstElement(); | |
| 1010 if (reason_elem != NULL) { | |
| 1011 term->reason = reason_elem->Name().LocalPart(); | |
| 1012 const buzz::XmlElement *debug_elem = reason_elem->FirstElement(); | |
| 1013 if (debug_elem != NULL) { | |
| 1014 term->debug_reason = debug_elem->Name().LocalPart(); | |
| 1015 } | |
| 1016 } | |
| 1017 return true; | |
| 1018 } else { | |
| 1019 const buzz::XmlElement* reason_elem = | |
| 1020 action_elem->FirstNamed(QN_JINGLE_REASON); | |
| 1021 if (reason_elem) { | |
| 1022 reason_elem = reason_elem->FirstElement(); | |
| 1023 if (reason_elem) { | |
| 1024 term->reason = reason_elem->Name().LocalPart(); | |
| 1025 } | |
| 1026 } | |
| 1027 return true; | |
| 1028 } | |
| 1029 } | |
| 1030 | |
| 1031 void WriteSessionTerminate(SignalingProtocol protocol, | |
| 1032 const SessionTerminate& term, | |
| 1033 XmlElements* elems) { | |
| 1034 if (protocol == PROTOCOL_GINGLE) { | |
| 1035 elems->push_back(new buzz::XmlElement(buzz::QName(NS_GINGLE, term.reason))); | |
| 1036 } else { | |
| 1037 if (!term.reason.empty()) { | |
| 1038 buzz::XmlElement* reason_elem = new buzz::XmlElement(QN_JINGLE_REASON); | |
| 1039 reason_elem->AddElement(new buzz::XmlElement( | |
| 1040 buzz::QName(NS_JINGLE, term.reason))); | |
| 1041 elems->push_back(reason_elem); | |
| 1042 } | |
| 1043 } | |
| 1044 } | |
| 1045 | |
| 1046 bool ParseDescriptionInfo(SignalingProtocol protocol, | |
| 1047 const buzz::XmlElement* action_elem, | |
| 1048 const ContentParserMap& content_parsers, | |
| 1049 const TransportParserMap& transport_parsers, | |
| 1050 const CandidateTranslatorMap& translators, | |
| 1051 DescriptionInfo* description_info, | |
| 1052 ParseError* error) { | |
| 1053 bool expect_transports = false; | |
| 1054 return ParseContentMessage(protocol, action_elem, expect_transports, | |
| 1055 content_parsers, transport_parsers, translators, | |
| 1056 description_info, error); | |
| 1057 } | |
| 1058 | |
| 1059 bool WriteDescriptionInfo(SignalingProtocol protocol, | |
| 1060 const ContentInfos& contents, | |
| 1061 const ContentParserMap& content_parsers, | |
| 1062 XmlElements* elems, | |
| 1063 WriteError* error) { | |
| 1064 if (protocol == PROTOCOL_GINGLE) { | |
| 1065 return WriteGingleContentInfos(contents, content_parsers, elems, error); | |
| 1066 } else { | |
| 1067 return WriteJingleContentInfos(contents, content_parsers, elems, error); | |
| 1068 } | |
| 1069 } | |
| 1070 | |
| 1071 bool ParseTransportInfos(SignalingProtocol protocol, | |
| 1072 const buzz::XmlElement* action_elem, | |
| 1073 const ContentInfos& contents, | |
| 1074 const TransportParserMap& trans_parsers, | |
| 1075 const CandidateTranslatorMap& translators, | |
| 1076 TransportInfos* tinfos, | |
| 1077 ParseError* error) { | |
| 1078 if (protocol == PROTOCOL_GINGLE) { | |
| 1079 return ParseGingleTransportInfos( | |
| 1080 action_elem, contents, trans_parsers, translators, tinfos, error); | |
| 1081 } else { | |
| 1082 return ParseJingleTransportInfos( | |
| 1083 action_elem, contents, trans_parsers, translators, tinfos, error); | |
| 1084 } | |
| 1085 } | |
| 1086 | |
| 1087 bool WriteTransportInfos(SignalingProtocol protocol, | |
| 1088 const TransportInfos& tinfos, | |
| 1089 const TransportParserMap& trans_parsers, | |
| 1090 const CandidateTranslatorMap& translators, | |
| 1091 XmlElements* elems, | |
| 1092 WriteError* error) { | |
| 1093 if (protocol == PROTOCOL_GINGLE) { | |
| 1094 return WriteGingleTransportInfos(tinfos, trans_parsers, translators, | |
| 1095 elems, error); | |
| 1096 } else { | |
| 1097 return WriteJingleTransportInfos(tinfos, trans_parsers, translators, | |
| 1098 elems, error); | |
| 1099 } | |
| 1100 } | |
| 1101 | |
| 1102 bool GetUriTarget(const std::string& prefix, const std::string& str, | |
| 1103 std::string* after) { | |
| 1104 size_t pos = str.find(prefix); | |
| 1105 if (pos == std::string::npos) | |
| 1106 return false; | |
| 1107 | |
| 1108 *after = str.substr(pos + prefix.size(), std::string::npos); | |
| 1109 return true; | |
| 1110 } | |
| 1111 | |
| 1112 bool FindSessionRedirect(const buzz::XmlElement* stanza, | |
| 1113 SessionRedirect* redirect) { | |
| 1114 const buzz::XmlElement* error_elem = GetXmlChild(stanza, LN_ERROR); | |
| 1115 if (error_elem == NULL) | |
| 1116 return false; | |
| 1117 | |
| 1118 const buzz::XmlElement* redirect_elem = | |
| 1119 error_elem->FirstNamed(QN_GINGLE_REDIRECT); | |
| 1120 if (redirect_elem == NULL) | |
| 1121 redirect_elem = error_elem->FirstNamed(buzz::QN_STANZA_REDIRECT); | |
| 1122 if (redirect_elem == NULL) | |
| 1123 return false; | |
| 1124 | |
| 1125 if (!GetUriTarget(STR_REDIRECT_PREFIX, redirect_elem->BodyText(), | |
| 1126 &redirect->target)) | |
| 1127 return false; | |
| 1128 | |
| 1129 return true; | |
| 1130 } | |
| 1131 | |
| 1132 } // namespace cricket | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1175243003:
Remove webrtc/libjingle/{examples,session}. (Closed)
Base URL: https://chromium.googlesource.com/external/webrtc.git@master