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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_FAKETRANSPORTCONTROLLER_H_ | |
| 12 #define WEBRTC_P2P_BASE_FAKETRANSPORTCONTROLLER_H_ | |
| 13 | |
| 14 #include <map> | |
| 15 #include <string> | |
| 16 #include <vector> | |
| 17 | |
| 18 #include "webrtc/p2p/base/transport.h" | |
| 19 #include "webrtc/p2p/base/transportchannel.h" | |
| 20 #include "webrtc/p2p/base/transportcontroller.h" | |
| 21 #include "webrtc/p2p/base/transportchannelimpl.h" | |
| 22 #include "webrtc/base/bind.h" | |
| 23 #include "webrtc/base/buffer.h" | |
| 24 #include "webrtc/base/fakesslidentity.h" | |
| 25 #include "webrtc/base/messagequeue.h" | |
| 26 #include "webrtc/base/sigslot.h" | |
| 27 #include "webrtc/base/sslfingerprint.h" | |
| 28 #include "webrtc/base/thread.h" | |
| 29 | |
| 30 namespace cricket { | |
| 31 | |
| 32 class FakeTransport; | |
| 33 | |
| 34 struct PacketMessageData : public rtc::MessageData { | |
| 35 PacketMessageData(const char* data, size_t len) : packet(data, len) {} | |
| 36 rtc::Buffer packet; | |
| 37 }; | |
| 38 | |
| 39 // Fake transport channel class, which can be passed to anything that needs a | |
| 40 // transport channel. Can be informed of another FakeTransportChannel via | |
| 41 // SetDestination. | |
| 42 // TODO(hbos): Move implementation to .cc file, this and other classes in file. | |
| 43 class FakeTransportChannel : public TransportChannelImpl, | |
| 44 public rtc::MessageHandler { | |
| 45 public: | |
| 46 explicit FakeTransportChannel(Transport* transport, | |
| 47 const std::string& name, | |
| 48 int component) | |
| 49 : TransportChannelImpl(name, component), | |
| 50 transport_(transport), | |
| 51 dtls_fingerprint_("", nullptr, 0) {} | |
| 52 ~FakeTransportChannel() { Reset(); } | |
| 53 | |
| 54 uint64 IceTiebreaker() const { return tiebreaker_; } | |
| 55 IceMode remote_ice_mode() const { return remote_ice_mode_; } | |
| 56 const std::string& ice_ufrag() const { return ice_ufrag_; } | |
| 57 const std::string& ice_pwd() const { return ice_pwd_; } | |
| 58 const std::string& remote_ice_ufrag() const { return remote_ice_ufrag_; } | |
| 59 const std::string& remote_ice_pwd() const { return remote_ice_pwd_; } | |
| 60 const rtc::SSLFingerprint& dtls_fingerprint() const { | |
| 61 return dtls_fingerprint_; | |
| 62 } | |
| 63 | |
| 64 // If async, will send packets by "Post"-ing to message queue instead of | |
| 65 // synchronously "Send"-ing. | |
| 66 void SetAsync(bool async) { async_ = async; } | |
| 67 | |
| 68 Transport* GetTransport() override { return transport_; } | |
| 69 | |
| 70 TransportChannelState GetState() const override { | |
| 71 if (connection_count_ == 0) { | |
| 72 return had_connection_ ? TransportChannelState::STATE_FAILED | |
| 73 : TransportChannelState::STATE_INIT; | |
| 74 } | |
| 75 | |
| 76 if (connection_count_ == 1) { | |
| 77 return TransportChannelState::STATE_COMPLETED; | |
| 78 } | |
| 79 | |
| 80 return TransportChannelState::STATE_CONNECTING; | |
| 81 } | |
| 82 | |
| 83 void SetIceRole(IceRole role) override { role_ = role; } | |
| 84 IceRole GetIceRole() const override { return role_; } | |
| 85 void SetIceTiebreaker(uint64 tiebreaker) override { | |
| 86 tiebreaker_ = tiebreaker; | |
| 87 } | |
| 88 void SetIceCredentials(const std::string& ice_ufrag, | |
| 89 const std::string& ice_pwd) override { | |
| 90 ice_ufrag_ = ice_ufrag; | |
| 91 ice_pwd_ = ice_pwd; | |
| 92 } | |
| 93 void SetRemoteIceCredentials(const std::string& ice_ufrag, | |
| 94 const std::string& ice_pwd) override { | |
| 95 remote_ice_ufrag_ = ice_ufrag; | |
| 96 remote_ice_pwd_ = ice_pwd; | |
| 97 } | |
| 98 | |
| 99 void SetRemoteIceMode(IceMode mode) override { remote_ice_mode_ = mode; } | |
| 100 bool SetRemoteFingerprint(const std::string& alg, | |
| 101 const uint8* digest, | |
| 102 size_t digest_len) override { | |
| 103 dtls_fingerprint_ = rtc::SSLFingerprint(alg, digest, digest_len); | |
| 104 return true; | |
| 105 } | |
| 106 bool SetSslRole(rtc::SSLRole role) override { | |
| 107 ssl_role_ = role; | |
| 108 return true; | |
| 109 } | |
| 110 bool GetSslRole(rtc::SSLRole* role) const override { | |
| 111 *role = ssl_role_; | |
| 112 return true; | |
| 113 } | |
| 114 | |
| 115 void Connect() override { | |
| 116 if (state_ == STATE_INIT) { | |
| 117 state_ = STATE_CONNECTING; | |
| 118 } | |
| 119 } | |
| 120 | |
| 121 void MaybeStartGathering() override { | |
| 122 if (gathering_state_ == kIceGatheringNew) { | |
| 123 gathering_state_ = kIceGatheringGathering; | |
| 124 SignalGatheringState(this); | |
| 125 } | |
| 126 } | |
| 127 | |
| 128 IceGatheringState gathering_state() const override { | |
| 129 return gathering_state_; | |
| 130 } | |
| 131 | |
| 132 void Reset() { | |
| 133 if (state_ != STATE_INIT) { | |
| 134 state_ = STATE_INIT; | |
| 135 if (dest_) { | |
| 136 dest_->state_ = STATE_INIT; | |
| 137 dest_->dest_ = nullptr; | |
| 138 dest_ = nullptr; | |
| 139 } | |
| 140 } | |
| 141 } | |
| 142 | |
| 143 void SetWritable(bool writable) { set_writable(writable); } | |
| 144 | |
| 145 void SetDestination(FakeTransportChannel* dest) { | |
| 146 if (state_ == STATE_CONNECTING && dest) { | |
| 147 // This simulates the delivery of candidates. | |
| 148 dest_ = dest; | |
| 149 dest_->dest_ = this; | |
| 150 if (local_cert_ && dest_->local_cert_) { | |
| 151 do_dtls_ = true; | |
| 152 dest_->do_dtls_ = true; | |
| 153 NegotiateSrtpCiphers(); | |
| 154 } | |
| 155 state_ = STATE_CONNECTED; | |
| 156 dest_->state_ = STATE_CONNECTED; | |
| 157 set_writable(true); | |
| 158 dest_->set_writable(true); | |
| 159 } else if (state_ == STATE_CONNECTED && !dest) { | |
| 160 // Simulates loss of connectivity, by asymmetrically forgetting dest_. | |
| 161 dest_ = nullptr; | |
| 162 state_ = STATE_CONNECTING; | |
| 163 set_writable(false); | |
| 164 } | |
| 165 } | |
| 166 | |
| 167 void SetConnectionCount(size_t connection_count) { | |
| 168 size_t old_connection_count = connection_count_; | |
| 169 connection_count_ = connection_count; | |
| 170 if (connection_count) | |
| 171 had_connection_ = true; | |
| 172 if (connection_count_ < old_connection_count) | |
| 173 SignalConnectionRemoved(this); | |
| 174 } | |
| 175 | |
| 176 void SetCandidatesGatheringComplete() { | |
| 177 if (gathering_state_ != kIceGatheringComplete) { | |
| 178 gathering_state_ = kIceGatheringComplete; | |
| 179 SignalGatheringState(this); | |
| 180 } | |
| 181 } | |
| 182 | |
| 183 void SetReceiving(bool receiving) { set_receiving(receiving); } | |
| 184 | |
| 185 void SetReceivingTimeout(int timeout) override { | |
| 186 receiving_timeout_ = timeout; | |
| 187 } | |
| 188 | |
| 189 int receiving_timeout() const { return receiving_timeout_; } | |
| 190 | |
| 191 int SendPacket(const char* data, | |
| 192 size_t len, | |
| 193 const rtc::PacketOptions& options, | |
| 194 int flags) override { | |
| 195 if (state_ != STATE_CONNECTED) { | |
| 196 return -1; | |
| 197 } | |
| 198 | |
| 199 if (flags != PF_SRTP_BYPASS && flags != 0) { | |
| 200 return -1; | |
| 201 } | |
| 202 | |
| 203 PacketMessageData* packet = new PacketMessageData(data, len); | |
| 204 if (async_) { | |
| 205 rtc::Thread::Current()->Post(this, 0, packet); | |
| 206 } else { | |
| 207 rtc::Thread::Current()->Send(this, 0, packet); | |
| 208 } | |
| 209 return static_cast<int>(len); | |
| 210 } | |
| 211 int SetOption(rtc::Socket::Option opt, int value) override { return true; } | |
| 212 bool GetOption(rtc::Socket::Option opt, int* value) override { return true; } | |
| 213 int GetError() override { return 0; } | |
| 214 | |
| 215 void AddRemoteCandidate(const Candidate& candidate) override { | |
| 216 remote_candidates_.push_back(candidate); | |
| 217 } | |
| 218 const Candidates& remote_candidates() const { return remote_candidates_; } | |
| 219 | |
| 220 void OnMessage(rtc::Message* msg) override { | |
| 221 PacketMessageData* data = static_cast<PacketMessageData*>(msg->pdata); | |
| 222 dest_->SignalReadPacket(dest_, data->packet.data<char>(), | |
| 223 data->packet.size(), rtc::CreatePacketTime(0), 0); | |
| 224 delete data; | |
| 225 } | |
| 226 | |
| 227 bool SetLocalCertificate( | |
| 228 const rtc::scoped_refptr<rtc::RTCCertificate>& certificate) { | |
| 229 local_cert_ = certificate; | |
| 230 return true; | |
| 231 } | |
| 232 | |
| 233 void SetRemoteSSLCertificate(rtc::FakeSSLCertificate* cert) { | |
| 234 remote_cert_ = cert; | |
| 235 } | |
| 236 | |
| 237 bool IsDtlsActive() const override { return do_dtls_; } | |
| 238 | |
| 239 bool SetSrtpCiphers(const std::vector<std::string>& ciphers) override { | |
| 240 srtp_ciphers_ = ciphers; | |
| 241 return true; | |
| 242 } | |
| 243 | |
| 244 bool GetSrtpCipher(std::string* cipher) override { | |
| 245 if (!chosen_srtp_cipher_.empty()) { | |
| 246 *cipher = chosen_srtp_cipher_; | |
| 247 return true; | |
| 248 } | |
| 249 return false; | |
| 250 } | |
| 251 | |
| 252 bool GetSslCipher(std::string* cipher) override { return false; } | |
| 253 | |
| 254 rtc::scoped_refptr<rtc::RTCCertificate> GetLocalCertificate() const { | |
| 255 return local_cert_; | |
| 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 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 void set_ssl_max_protocol_version(rtc::SSLProtocolVersion version) { | |
| 303 ssl_max_version_ = version; | |
| 304 } | |
| 305 rtc::SSLProtocolVersion ssl_max_protocol_version() const { | |
| 306 return ssl_max_version_; | |
| 307 } | |
| 308 | |
| 309 private: | |
| 310 enum State { STATE_INIT, STATE_CONNECTING, STATE_CONNECTED }; | |
| 311 Transport* transport_; | |
| 312 FakeTransportChannel* dest_ = nullptr; | |
| 313 State state_ = STATE_INIT; | |
| 314 bool async_ = false; | |
| 315 Candidates remote_candidates_; | |
| 316 rtc::scoped_refptr<rtc::RTCCertificate> local_cert_; | |
| 317 rtc::FakeSSLCertificate* remote_cert_ = nullptr; | |
| 318 bool do_dtls_ = false; | |
| 319 std::vector<std::string> srtp_ciphers_; | |
| 320 std::string chosen_srtp_cipher_; | |
| 321 int receiving_timeout_ = -1; | |
| 322 IceRole role_ = ICEROLE_UNKNOWN; | |
| 323 uint64 tiebreaker_ = 0; | |
| 324 std::string ice_ufrag_; | |
| 325 std::string ice_pwd_; | |
| 326 std::string remote_ice_ufrag_; | |
| 327 std::string remote_ice_pwd_; | |
| 328 IceMode remote_ice_mode_ = ICEMODE_FULL; | |
| 329 rtc::SSLProtocolVersion ssl_max_version_ = rtc::SSL_PROTOCOL_DTLS_10; | |
| 330 rtc::SSLFingerprint dtls_fingerprint_; | |
| 331 rtc::SSLRole ssl_role_ = rtc::SSL_CLIENT; | |
| 332 size_t connection_count_ = 0; | |
| 333 IceGatheringState gathering_state_ = kIceGatheringNew; | |
| 334 bool had_connection_ = false; | |
| 335 }; | |
| 336 | |
| 337 // Fake transport class, which can be passed to anything that needs a Transport. | |
| 338 // Can be informed of another FakeTransport via SetDestination (low-tech way | |
| 339 // of doing candidates) | |
| 340 class FakeTransport : public Transport { | |
| 341 public: | |
| 342 typedef std::map<int, FakeTransportChannel*> ChannelMap; | |
| 343 | |
| 344 explicit FakeTransport(const std::string& name) : Transport(name, nullptr) {} | |
| 345 | |
| 346 // Note that we only have a constructor with the allocator parameter so it can | |
| 347 // be wrapped by a DtlsTransport. | |
| 348 FakeTransport(const std::string& name, PortAllocator* allocator) | |
| 349 : Transport(name, nullptr) {} | |
| 350 | |
| 351 ~FakeTransport() { DestroyAllChannels(); } | |
| 352 | |
| 353 const ChannelMap& channels() const { return channels_; } | |
| 354 | |
| 355 // If async, will send packets by "Post"-ing to message queue instead of | |
| 356 // synchronously "Send"-ing. | |
| 357 void SetAsync(bool async) { async_ = async; } | |
| 358 void SetDestination(FakeTransport* dest) { | |
| 359 dest_ = dest; | |
| 360 for (const auto& kv : channels_) { | |
| 361 kv.second->SetLocalCertificate(certificate_); | |
| 362 SetChannelDestination(kv.first, kv.second); | |
| 363 } | |
| 364 } | |
| 365 | |
| 366 void SetWritable(bool writable) { | |
| 367 for (const auto& kv : channels_) { | |
| 368 kv.second->SetWritable(writable); | |
| 369 } | |
| 370 } | |
| 371 | |
| 372 void SetLocalCertificate( | |
| 373 const rtc::scoped_refptr<rtc::RTCCertificate>& certificate) override { | |
| 374 certificate_ = certificate; | |
| 375 } | |
| 376 bool GetLocalCertificate( | |
| 377 rtc::scoped_refptr<rtc::RTCCertificate>* certificate) override { | |
| 378 if (!certificate_) | |
| 379 return false; | |
| 380 | |
| 381 *certificate = certificate_; | |
| 382 return true; | |
| 383 } | |
| 384 | |
| 385 bool GetSslRole(rtc::SSLRole* role) const override { | |
| 386 if (channels_.empty()) { | |
| 387 return false; | |
| 388 } | |
| 389 return channels_.begin()->second->GetSslRole(role); | |
| 390 } | |
| 391 | |
| 392 bool SetSslMaxProtocolVersion(rtc::SSLProtocolVersion version) override { | |
| 393 ssl_max_version_ = version; | |
| 394 for (const auto& kv : channels_) { | |
| 395 kv.second->set_ssl_max_protocol_version(ssl_max_version_); | |
| 396 } | |
| 397 return true; | |
| 398 } | |
| 399 rtc::SSLProtocolVersion ssl_max_protocol_version() const { | |
| 400 return ssl_max_version_; | |
| 401 } | |
| 402 | |
| 403 using Transport::local_description; | |
| 404 using Transport::remote_description; | |
| 405 | |
| 406 protected: | |
| 407 TransportChannelImpl* CreateTransportChannel(int component) override { | |
| 408 if (channels_.find(component) != channels_.end()) { | |
| 409 return nullptr; | |
| 410 } | |
| 411 FakeTransportChannel* channel = | |
| 412 new FakeTransportChannel(this, name(), component); | |
| 413 channel->set_ssl_max_protocol_version(ssl_max_version_); | |
| 414 channel->SetAsync(async_); | |
| 415 SetChannelDestination(component, channel); | |
| 416 channels_[component] = channel; | |
| 417 return channel; | |
| 418 } | |
| 419 | |
| 420 void DestroyTransportChannel(TransportChannelImpl* channel) override { | |
| 421 channels_.erase(channel->component()); | |
| 422 delete channel; | |
| 423 } | |
| 424 | |
| 425 private: | |
| 426 FakeTransportChannel* GetFakeChannel(int component) { | |
| 427 auto it = channels_.find(component); | |
| 428 return (it != channels_.end()) ? it->second : nullptr; | |
| 429 } | |
| 430 | |
| 431 void SetChannelDestination(int component, FakeTransportChannel* channel) { | |
| 432 FakeTransportChannel* dest_channel = nullptr; | |
| 433 if (dest_) { | |
| 434 dest_channel = dest_->GetFakeChannel(component); | |
| 435 if (dest_channel) { | |
| 436 dest_channel->SetLocalCertificate(dest_->certificate_); | |
| 437 } | |
| 438 } | |
| 439 channel->SetDestination(dest_channel); | |
| 440 } | |
| 441 | |
| 442 // Note, this is distinct from the Channel map owned by Transport. | |
| 443 // This map just tracks the FakeTransportChannels created by this class. | |
| 444 // It's mainly needed so that we can access a FakeTransportChannel directly, | |
| 445 // even if wrapped by a DtlsTransportChannelWrapper. | |
| 446 ChannelMap channels_; | |
| 447 FakeTransport* dest_ = nullptr; | |
| 448 bool async_ = false; | |
| 449 rtc::scoped_refptr<rtc::RTCCertificate> certificate_; | |
| 450 rtc::SSLProtocolVersion ssl_max_version_ = rtc::SSL_PROTOCOL_DTLS_10; | |
| 451 }; | |
| 452 | |
| 453 // Fake TransportController class, which can be passed into a BaseChannel object | |
| 454 // for test purposes. Can be connected to other FakeTransportControllers via | |
| 455 // Connect(). | |
| 456 // | |
| 457 // This fake is unusual in that for the most part, it's implemented with the | |
| 458 // real TransportController code, but with fake TransportChannels underneath. | |
| 459 class FakeTransportController : public TransportController { | |
| 460 public: | |
| 461 FakeTransportController() | |
| 462 : TransportController(rtc::Thread::Current(), | |
| 463 rtc::Thread::Current(), | |
| 464 nullptr), | |
| 465 fail_create_channel_(false) {} | |
| 466 | |
| 467 explicit FakeTransportController(IceRole role) | |
| 468 : TransportController(rtc::Thread::Current(), | |
| 469 rtc::Thread::Current(), | |
| 470 nullptr), | |
| 471 fail_create_channel_(false) { | |
| 472 SetIceRole(role); | |
| 473 } | |
| 474 | |
| 475 explicit FakeTransportController(rtc::Thread* worker_thread) | |
| 476 : TransportController(rtc::Thread::Current(), worker_thread, nullptr), | |
| 477 fail_create_channel_(false) {} | |
| 478 | |
| 479 FakeTransportController(rtc::Thread* worker_thread, IceRole role) | |
| 480 : TransportController(rtc::Thread::Current(), worker_thread, nullptr), | |
| 481 fail_create_channel_(false) { | |
| 482 SetIceRole(role); | |
| 483 } | |
| 484 | |
| 485 FakeTransport* GetTransport_w(const std::string& transport_name) { | |
| 486 return static_cast<FakeTransport*>( | |
| 487 TransportController::GetTransport_w(transport_name)); | |
| 488 } | |
| 489 | |
| 490 void Connect(FakeTransportController* dest) { | |
| 491 worker_thread()->Invoke<void>( | |
| 492 rtc::Bind(&FakeTransportController::Connect_w, this, dest)); | |
| 493 } | |
| 494 | |
| 495 TransportChannel* CreateTransportChannel_w(const std::string& transport_name, | |
| 496 int component) override { | |
| 497 if (fail_create_channel_) { | |
| 498 return nullptr; | |
| 499 } | |
| 500 return TransportController::CreateTransportChannel_w(transport_name, | |
| 501 component); | |
| 502 } | |
| 503 | |
| 504 void set_fail_channel_creation(bool fail_channel_creation) { | |
| 505 fail_create_channel_ = fail_channel_creation; | |
| 506 } | |
| 507 | |
| 508 protected: | |
| 509 Transport* CreateTransport_w(const std::string& transport_name) override { | |
| 510 return new FakeTransport(transport_name); | |
| 511 } | |
| 512 | |
| 513 void Connect_w(FakeTransportController* dest) { | |
| 514 // Simulate the exchange of candidates. | |
| 515 ConnectChannels_w(); | |
| 516 dest->ConnectChannels_w(); | |
| 517 for (auto& kv : transports()) { | |
| 518 FakeTransport* transport = static_cast<FakeTransport*>(kv.second); | |
| 519 transport->SetDestination(dest->GetTransport_w(kv.first)); | |
| 520 } | |
| 521 } | |
| 522 | |
| 523 void ConnectChannels_w() { | |
| 524 for (auto& kv : transports()) { | |
| 525 FakeTransport* transport = static_cast<FakeTransport*>(kv.second); | |
| 526 transport->ConnectChannels(); | |
| 527 transport->MaybeStartGathering(); | |
| 528 } | |
| 529 } | |
| 530 | |
| 531 private: | |
| 532 bool fail_create_channel_; | |
| 533 }; | |
| 534 | |
| 535 } // namespace cricket | |
| 536 | |
| 537 #endif // WEBRTC_P2P_BASE_FAKETRANSPORTCONTROLLER_H_ | |
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Chromium Code Reviews
Issue 1358413003:
Revert of TransportController refactoring. (Closed)
Base URL: https://chromium.googlesource.com/external/webrtc.git@master