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| 1 /* | |
| 2 * Copyright 2009 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 #ifndef WEBRTC_P2P_BASE_FAKESESSION_H_ | |
| 12 #define WEBRTC_P2P_BASE_FAKESESSION_H_ | |
| 13 | |
| 14 #include <map> | |
| 15 #include <string> | |
| 16 #include <vector> | |
| 17 | |
| 18 #include "webrtc/p2p/base/session.h" | |
| 19 #include "webrtc/p2p/base/transport.h" | |
| 20 #include "webrtc/p2p/base/transportchannel.h" | |
| 21 #include "webrtc/p2p/base/transportchannelimpl.h" | |
| 22 #include "webrtc/base/buffer.h" | |
| 23 #include "webrtc/base/fakesslidentity.h" | |
| 24 #include "webrtc/base/messagequeue.h" | |
| 25 #include "webrtc/base/sigslot.h" | |
| 26 #include "webrtc/base/sslfingerprint.h" | |
| 27 | |
| 28 namespace cricket { | |
| 29 | |
| 30 class FakeTransport; | |
| 31 | |
| 32 struct PacketMessageData : public rtc::MessageData { | |
| 33 PacketMessageData(const char* data, size_t len) : packet(data, len) { | |
| 34 } | |
| 35 rtc::Buffer packet; | |
| 36 }; | |
| 37 | |
| 38 // Fake transport channel class, which can be passed to anything that needs a | |
| 39 // transport channel. Can be informed of another FakeTransportChannel via | |
| 40 // SetDestination. | |
| 41 // TODO(hbos): Move implementation to .cc file, this and other classes in file. | |
| 42 class FakeTransportChannel : public TransportChannelImpl, | |
| 43 public rtc::MessageHandler { | |
| 44 public: | |
| 45 explicit FakeTransportChannel(Transport* transport, | |
| 46 const std::string& content_name, | |
| 47 int component) | |
| 48 : TransportChannelImpl(content_name, component), | |
| 49 transport_(transport), | |
| 50 dest_(nullptr), | |
| 51 state_(STATE_INIT), | |
| 52 async_(false), | |
| 53 do_dtls_(false), | |
| 54 role_(ICEROLE_UNKNOWN), | |
| 55 tiebreaker_(0), | |
| 56 remote_ice_mode_(ICEMODE_FULL), | |
| 57 dtls_fingerprint_("", nullptr, 0), | |
| 58 ssl_role_(rtc::SSL_CLIENT), | |
| 59 connection_count_(0) { | |
| 60 } | |
| 61 ~FakeTransportChannel() { | |
| 62 Reset(); | |
| 63 } | |
| 64 | |
| 65 uint64 IceTiebreaker() const { return tiebreaker_; } | |
| 66 IceMode remote_ice_mode() const { return remote_ice_mode_; } | |
| 67 const std::string& ice_ufrag() const { return ice_ufrag_; } | |
| 68 const std::string& ice_pwd() const { return ice_pwd_; } | |
| 69 const std::string& remote_ice_ufrag() const { return remote_ice_ufrag_; } | |
| 70 const std::string& remote_ice_pwd() const { return remote_ice_pwd_; } | |
| 71 const rtc::SSLFingerprint& dtls_fingerprint() const { | |
| 72 return dtls_fingerprint_; | |
| 73 } | |
| 74 | |
| 75 void SetAsync(bool async) { | |
| 76 async_ = async; | |
| 77 } | |
| 78 | |
| 79 Transport* GetTransport() override { | |
| 80 return transport_; | |
| 81 } | |
| 82 | |
| 83 TransportChannelState GetState() const override { | |
| 84 if (connection_count_ == 0) { | |
| 85 return TransportChannelState::STATE_FAILED; | |
| 86 } | |
| 87 | |
| 88 if (connection_count_ == 1) { | |
| 89 return TransportChannelState::STATE_COMPLETED; | |
| 90 } | |
| 91 | |
| 92 return TransportChannelState::STATE_FAILED; | |
| 93 } | |
| 94 | |
| 95 void SetIceRole(IceRole role) override { role_ = role; } | |
| 96 IceRole GetIceRole() const override { return role_; } | |
| 97 void SetIceTiebreaker(uint64 tiebreaker) override { | |
| 98 tiebreaker_ = tiebreaker; | |
| 99 } | |
| 100 void SetIceCredentials(const std::string& ice_ufrag, | |
| 101 const std::string& ice_pwd) override { | |
| 102 ice_ufrag_ = ice_ufrag; | |
| 103 ice_pwd_ = ice_pwd; | |
| 104 } | |
| 105 void SetRemoteIceCredentials(const std::string& ice_ufrag, | |
| 106 const std::string& ice_pwd) override { | |
| 107 remote_ice_ufrag_ = ice_ufrag; | |
| 108 remote_ice_pwd_ = ice_pwd; | |
| 109 } | |
| 110 | |
| 111 void SetRemoteIceMode(IceMode mode) override { remote_ice_mode_ = mode; } | |
| 112 bool SetRemoteFingerprint(const std::string& alg, const uint8* digest, | |
| 113 size_t digest_len) override { | |
| 114 dtls_fingerprint_ = rtc::SSLFingerprint(alg, digest, digest_len); | |
| 115 return true; | |
| 116 } | |
| 117 bool SetSslRole(rtc::SSLRole role) override { | |
| 118 ssl_role_ = role; | |
| 119 return true; | |
| 120 } | |
| 121 bool GetSslRole(rtc::SSLRole* role) const override { | |
| 122 *role = ssl_role_; | |
| 123 return true; | |
| 124 } | |
| 125 | |
| 126 void Connect() override { | |
| 127 if (state_ == STATE_INIT) { | |
| 128 state_ = STATE_CONNECTING; | |
| 129 } | |
| 130 } | |
| 131 virtual void Reset() { | |
| 132 if (state_ != STATE_INIT) { | |
| 133 state_ = STATE_INIT; | |
| 134 if (dest_) { | |
| 135 dest_->state_ = STATE_INIT; | |
| 136 dest_->dest_ = NULL; | |
| 137 dest_ = NULL; | |
| 138 } | |
| 139 } | |
| 140 } | |
| 141 | |
| 142 void SetWritable(bool writable) { | |
| 143 set_writable(writable); | |
| 144 } | |
| 145 | |
| 146 void SetDestination(FakeTransportChannel* dest) { | |
| 147 if (state_ == STATE_CONNECTING && dest) { | |
| 148 // This simulates the delivery of candidates. | |
| 149 dest_ = dest; | |
| 150 dest_->dest_ = this; | |
| 151 if (certificate_ && dest_->certificate_) { | |
| 152 do_dtls_ = true; | |
| 153 dest_->do_dtls_ = true; | |
| 154 NegotiateSrtpCiphers(); | |
| 155 } | |
| 156 state_ = STATE_CONNECTED; | |
| 157 dest_->state_ = STATE_CONNECTED; | |
| 158 set_writable(true); | |
| 159 dest_->set_writable(true); | |
| 160 } else if (state_ == STATE_CONNECTED && !dest) { | |
| 161 // Simulates loss of connectivity, by asymmetrically forgetting dest_. | |
| 162 dest_ = NULL; | |
| 163 state_ = STATE_CONNECTING; | |
| 164 set_writable(false); | |
| 165 } | |
| 166 } | |
| 167 | |
| 168 void SetConnectionCount(size_t connection_count) { | |
| 169 size_t old_connection_count = connection_count_; | |
| 170 connection_count_ = connection_count; | |
| 171 if (connection_count_ < old_connection_count) | |
| 172 SignalConnectionRemoved(this); | |
| 173 } | |
| 174 | |
| 175 void SetReceiving(bool receiving) { | |
| 176 set_receiving(receiving); | |
| 177 } | |
| 178 | |
| 179 void SetReceivingTimeout(int timeout) override {} | |
| 180 | |
| 181 int SendPacket(const char* data, size_t len, | |
| 182 const rtc::PacketOptions& options, int flags) override { | |
| 183 if (state_ != STATE_CONNECTED) { | |
| 184 return -1; | |
| 185 } | |
| 186 | |
| 187 if (flags != PF_SRTP_BYPASS && flags != 0) { | |
| 188 return -1; | |
| 189 } | |
| 190 | |
| 191 PacketMessageData* packet = new PacketMessageData(data, len); | |
| 192 if (async_) { | |
| 193 rtc::Thread::Current()->Post(this, 0, packet); | |
| 194 } else { | |
| 195 rtc::Thread::Current()->Send(this, 0, packet); | |
| 196 } | |
| 197 return static_cast<int>(len); | |
| 198 } | |
| 199 int SetOption(rtc::Socket::Option opt, int value) override { | |
| 200 return true; | |
| 201 } | |
| 202 bool GetOption(rtc::Socket::Option opt, int* value) override { | |
| 203 return true; | |
| 204 } | |
| 205 int GetError() override { | |
| 206 return 0; | |
| 207 } | |
| 208 | |
| 209 void OnSignalingReady() override { | |
| 210 } | |
| 211 void OnCandidate(const Candidate& candidate) override { | |
| 212 } | |
| 213 | |
| 214 void OnMessage(rtc::Message* msg) override { | |
| 215 PacketMessageData* data = static_cast<PacketMessageData*>( | |
| 216 msg->pdata); | |
| 217 dest_->SignalReadPacket(dest_, data->packet.data<char>(), | |
| 218 data->packet.size(), rtc::CreatePacketTime(0), 0); | |
| 219 delete data; | |
| 220 } | |
| 221 | |
| 222 bool SetLocalCertificate( | |
| 223 const rtc::scoped_refptr<rtc::RTCCertificate>& certificate) override { | |
| 224 certificate_ = certificate; | |
| 225 return true; | |
| 226 } | |
| 227 | |
| 228 void SetRemoteSSLCertificate(rtc::FakeSSLCertificate* cert) { | |
| 229 remote_cert_ = cert; | |
| 230 } | |
| 231 | |
| 232 bool IsDtlsActive() const override { | |
| 233 return do_dtls_; | |
| 234 } | |
| 235 | |
| 236 bool SetSrtpCiphers(const std::vector<std::string>& ciphers) override { | |
| 237 srtp_ciphers_ = ciphers; | |
| 238 return true; | |
| 239 } | |
| 240 | |
| 241 bool GetSrtpCipher(std::string* cipher) override { | |
| 242 if (!chosen_srtp_cipher_.empty()) { | |
| 243 *cipher = chosen_srtp_cipher_; | |
| 244 return true; | |
| 245 } | |
| 246 return false; | |
| 247 } | |
| 248 | |
| 249 bool GetSslCipher(std::string* cipher) override { | |
| 250 return false; | |
| 251 } | |
| 252 | |
| 253 rtc::scoped_refptr<rtc::RTCCertificate> | |
| 254 GetLocalCertificate() const override { | |
| 255 return certificate_; | |
| 256 } | |
| 257 | |
| 258 bool GetRemoteSSLCertificate(rtc::SSLCertificate** cert) const override { | |
| 259 if (!remote_cert_) | |
| 260 return false; | |
| 261 | |
| 262 *cert = remote_cert_->GetReference(); | |
| 263 return true; | |
| 264 } | |
| 265 | |
| 266 bool ExportKeyingMaterial(const std::string& label, | |
| 267 const uint8* context, | |
| 268 size_t context_len, | |
| 269 bool use_context, | |
| 270 uint8* result, | |
| 271 size_t result_len) override { | |
| 272 if (!chosen_srtp_cipher_.empty()) { | |
| 273 memset(result, 0xff, result_len); | |
| 274 return true; | |
| 275 } | |
| 276 | |
| 277 return false; | |
| 278 } | |
| 279 | |
| 280 virtual void NegotiateSrtpCiphers() { | |
| 281 for (std::vector<std::string>::const_iterator it1 = srtp_ciphers_.begin(); | |
| 282 it1 != srtp_ciphers_.end(); ++it1) { | |
| 283 for (std::vector<std::string>::const_iterator it2 = | |
| 284 dest_->srtp_ciphers_.begin(); | |
| 285 it2 != dest_->srtp_ciphers_.end(); ++it2) { | |
| 286 if (*it1 == *it2) { | |
| 287 chosen_srtp_cipher_ = *it1; | |
| 288 dest_->chosen_srtp_cipher_ = *it2; | |
| 289 return; | |
| 290 } | |
| 291 } | |
| 292 } | |
| 293 } | |
| 294 | |
| 295 bool GetStats(ConnectionInfos* infos) override { | |
| 296 ConnectionInfo info; | |
| 297 infos->clear(); | |
| 298 infos->push_back(info); | |
| 299 return true; | |
| 300 } | |
| 301 | |
| 302 private: | |
| 303 enum State { STATE_INIT, STATE_CONNECTING, STATE_CONNECTED }; | |
| 304 Transport* transport_; | |
| 305 FakeTransportChannel* dest_; | |
| 306 State state_; | |
| 307 bool async_; | |
| 308 rtc::scoped_refptr<rtc::RTCCertificate> certificate_; | |
| 309 rtc::FakeSSLCertificate* remote_cert_; | |
| 310 bool do_dtls_; | |
| 311 std::vector<std::string> srtp_ciphers_; | |
| 312 std::string chosen_srtp_cipher_; | |
| 313 IceRole role_; | |
| 314 uint64 tiebreaker_; | |
| 315 std::string ice_ufrag_; | |
| 316 std::string ice_pwd_; | |
| 317 std::string remote_ice_ufrag_; | |
| 318 std::string remote_ice_pwd_; | |
| 319 IceMode remote_ice_mode_; | |
| 320 rtc::SSLFingerprint dtls_fingerprint_; | |
| 321 rtc::SSLRole ssl_role_; | |
| 322 size_t connection_count_; | |
| 323 }; | |
| 324 | |
| 325 // Fake transport class, which can be passed to anything that needs a Transport. | |
| 326 // Can be informed of another FakeTransport via SetDestination (low-tech way | |
| 327 // of doing candidates) | |
| 328 class FakeTransport : public Transport { | |
| 329 public: | |
| 330 typedef std::map<int, FakeTransportChannel*> ChannelMap; | |
| 331 FakeTransport(rtc::Thread* signaling_thread, | |
| 332 rtc::Thread* worker_thread, | |
| 333 const std::string& content_name, | |
| 334 PortAllocator* alllocator = nullptr) | |
| 335 : Transport(signaling_thread, worker_thread, | |
| 336 content_name, nullptr), | |
| 337 dest_(nullptr), | |
| 338 async_(false) { | |
| 339 } | |
| 340 ~FakeTransport() { | |
| 341 DestroyAllChannels(); | |
| 342 } | |
| 343 | |
| 344 const ChannelMap& channels() const { return channels_; } | |
| 345 | |
| 346 void SetAsync(bool async) { async_ = async; } | |
| 347 void SetDestination(FakeTransport* dest) { | |
| 348 dest_ = dest; | |
| 349 for (ChannelMap::iterator it = channels_.begin(); it != channels_.end(); | |
| 350 ++it) { | |
| 351 it->second->SetLocalCertificate(certificate_); | |
| 352 SetChannelDestination(it->first, it->second); | |
| 353 } | |
| 354 } | |
| 355 | |
| 356 void SetWritable(bool writable) { | |
| 357 for (ChannelMap::iterator it = channels_.begin(); it != channels_.end(); | |
| 358 ++it) { | |
| 359 it->second->SetWritable(writable); | |
| 360 } | |
| 361 } | |
| 362 | |
| 363 void set_certificate( | |
| 364 const rtc::scoped_refptr<rtc::RTCCertificate>& certificate) { | |
| 365 certificate_ = certificate; | |
| 366 } | |
| 367 | |
| 368 using Transport::local_description; | |
| 369 using Transport::remote_description; | |
| 370 | |
| 371 protected: | |
| 372 TransportChannelImpl* CreateTransportChannel(int component) override { | |
| 373 if (channels_.find(component) != channels_.end()) { | |
| 374 return NULL; | |
| 375 } | |
| 376 FakeTransportChannel* channel = | |
| 377 new FakeTransportChannel(this, content_name(), component); | |
| 378 channel->SetAsync(async_); | |
| 379 SetChannelDestination(component, channel); | |
| 380 channels_[component] = channel; | |
| 381 return channel; | |
| 382 } | |
| 383 void DestroyTransportChannel(TransportChannelImpl* channel) override { | |
| 384 channels_.erase(channel->component()); | |
| 385 delete channel; | |
| 386 } | |
| 387 void SetCertificate_w( | |
| 388 const rtc::scoped_refptr<rtc::RTCCertificate>& certificate) override { | |
| 389 certificate_ = certificate; | |
| 390 } | |
| 391 bool GetCertificate_w( | |
| 392 rtc::scoped_refptr<rtc::RTCCertificate>* certificate) override { | |
| 393 if (!certificate_) | |
| 394 return false; | |
| 395 | |
| 396 *certificate = certificate_; | |
| 397 return true; | |
| 398 } | |
| 399 | |
| 400 private: | |
| 401 FakeTransportChannel* GetFakeChannel(int component) { | |
| 402 ChannelMap::iterator it = channels_.find(component); | |
| 403 return (it != channels_.end()) ? it->second : NULL; | |
| 404 } | |
| 405 void SetChannelDestination(int component, | |
| 406 FakeTransportChannel* channel) { | |
| 407 FakeTransportChannel* dest_channel = NULL; | |
| 408 if (dest_) { | |
| 409 dest_channel = dest_->GetFakeChannel(component); | |
| 410 if (dest_channel) | |
| 411 dest_channel->SetLocalCertificate(dest_->certificate_); | |
| 412 } | |
| 413 channel->SetDestination(dest_channel); | |
| 414 } | |
| 415 | |
| 416 // Note, this is distinct from the Channel map owned by Transport. | |
| 417 // This map just tracks the FakeTransportChannels created by this class. | |
| 418 ChannelMap channels_; | |
| 419 FakeTransport* dest_; | |
| 420 bool async_; | |
| 421 rtc::scoped_refptr<rtc::RTCCertificate> certificate_; | |
| 422 }; | |
| 423 | |
| 424 // Fake session class, which can be passed into a BaseChannel object for | |
| 425 // test purposes. Can be connected to other FakeSessions via Connect(). | |
| 426 class FakeSession : public BaseSession { | |
| 427 public: | |
| 428 explicit FakeSession() | |
| 429 : BaseSession(rtc::Thread::Current(), | |
| 430 rtc::Thread::Current(), | |
| 431 NULL, "", "", true), | |
| 432 fail_create_channel_(false) { | |
| 433 } | |
| 434 explicit FakeSession(bool initiator) | |
| 435 : BaseSession(rtc::Thread::Current(), | |
| 436 rtc::Thread::Current(), | |
| 437 NULL, "", "", initiator), | |
| 438 fail_create_channel_(false) { | |
| 439 } | |
| 440 FakeSession(rtc::Thread* worker_thread, bool initiator) | |
| 441 : BaseSession(rtc::Thread::Current(), | |
| 442 worker_thread, | |
| 443 NULL, "", "", initiator), | |
| 444 fail_create_channel_(false) { | |
| 445 } | |
| 446 | |
| 447 FakeTransport* GetTransport(const std::string& content_name) { | |
| 448 return static_cast<FakeTransport*>( | |
| 449 BaseSession::GetTransport(content_name)); | |
| 450 } | |
| 451 | |
| 452 void Connect(FakeSession* dest) { | |
| 453 // Simulate the exchange of candidates. | |
| 454 CompleteNegotiation(); | |
| 455 dest->CompleteNegotiation(); | |
| 456 for (TransportMap::const_iterator it = transport_proxies().begin(); | |
| 457 it != transport_proxies().end(); ++it) { | |
| 458 static_cast<FakeTransport*>(it->second->impl())->SetDestination( | |
| 459 dest->GetTransport(it->first)); | |
| 460 } | |
| 461 } | |
| 462 | |
| 463 TransportChannel* CreateChannel(const std::string& content_name, | |
| 464 int component) override { | |
| 465 if (fail_create_channel_) { | |
| 466 return NULL; | |
| 467 } | |
| 468 return BaseSession::CreateChannel(content_name, component); | |
| 469 } | |
| 470 | |
| 471 void set_fail_channel_creation(bool fail_channel_creation) { | |
| 472 fail_create_channel_ = fail_channel_creation; | |
| 473 } | |
| 474 | |
| 475 // TODO: Hoist this into Session when we re-work the Session code. | |
| 476 void set_ssl_rtccertificate( | |
| 477 const rtc::scoped_refptr<rtc::RTCCertificate>& certificate) { | |
| 478 for (TransportMap::const_iterator it = transport_proxies().begin(); | |
| 479 it != transport_proxies().end(); ++it) { | |
| 480 // We know that we have a FakeTransport* | |
| 481 | |
| 482 static_cast<FakeTransport*>(it->second->impl())->set_certificate | |
| 483 (certificate); | |
| 484 } | |
| 485 } | |
| 486 | |
| 487 protected: | |
| 488 Transport* CreateTransport(const std::string& content_name) override { | |
| 489 return new FakeTransport(signaling_thread(), worker_thread(), content_name); | |
| 490 } | |
| 491 | |
| 492 void CompleteNegotiation() { | |
| 493 for (TransportMap::const_iterator it = transport_proxies().begin(); | |
| 494 it != transport_proxies().end(); ++it) { | |
| 495 it->second->CompleteNegotiation(); | |
| 496 it->second->ConnectChannels(); | |
| 497 } | |
| 498 } | |
| 499 | |
| 500 private: | |
| 501 bool fail_create_channel_; | |
| 502 }; | |
| 503 | |
| 504 } // namespace cricket | |
| 505 | |
| 506 #endif // WEBRTC_P2P_BASE_FAKESESSION_H_ | |
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Chromium Code Reviews
Issue 1350523003:
TransportController refactoring. (Closed)
Base URL: https://chromium.googlesource.com/external/webrtc.git@master