remoting/client/chromoting_client.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "remoting/client/chromoting_client.h"
   6
   7 #include "base/bind.h"
   8 #include "remoting/base/capabilities.h"
   9 #include "remoting/client/audio_decode_scheduler.h"
  10 #include "remoting/client/audio_player.h"
  11 #include "remoting/client/client_context.h"
  12 #include "remoting/client/client_user_interface.h"
  13 #include "remoting/client/rectangle_update_decoder.h"
  14 #include "remoting/proto/audio.pb.h"
  15 #include "remoting/proto/video.pb.h"
  16 #include "remoting/protocol/authentication_method.h"
  17 #include "remoting/protocol/connection_to_host.h"
  18 #include "remoting/protocol/host_stub.h"
  19 #include "remoting/protocol/negotiating_client_authenticator.h"
  20 #include "remoting/protocol/session_config.h"
  21 #include "remoting/protocol/transport.h"
  22
  23 namespace remoting {
  24
  25 using protocol::AuthenticationMethod;
  26
  27 ChromotingClient::ChromotingClient(
  28     const ClientConfig& config,
  29     ClientContext* client_context,
  30     protocol::ConnectionToHost* connection,
  31     ClientUserInterface* user_interface,
  32     scoped_refptr<FrameConsumerProxy> frame_consumer,
  33     scoped_ptr<AudioPlayer> audio_player)
  34     : config_(config),
  35       task_runner_(client_context->main_task_runner()),
  36       connection_(connection),
  37       user_interface_(user_interface),
  38       host_capabilities_received_(false),
  39       weak_factory_(this) {
  40   rectangle_decoder_ =
  41       new RectangleUpdateDecoder(client_context->main_task_runner(),
  42                                  client_context->decode_task_runner(),
  43                                  frame_consumer);
  44   if (audio_player) {
  45     audio_decode_scheduler_.reset(new AudioDecodeScheduler(
  46         client_context->main_task_runner(),
  47         client_context->audio_decode_task_runner(),
  48         audio_player.Pass()));
  49   }
  50 }
  51
  52 ChromotingClient::~ChromotingClient() {
  53 }
  54
  55 void ChromotingClient::Start(
  56     SignalStrategy* signal_strategy,
  57     scoped_ptr<protocol::TransportFactory> transport_factory) {
  58   DCHECK(task_runner_->BelongsToCurrentThread());
  59
  60   scoped_ptr<protocol::Authenticator> authenticator(
  61       new protocol::NegotiatingClientAuthenticator(
  62           config_.client_pairing_id,
  63           config_.client_paired_secret,
  64           config_.authentication_tag,
  65           config_.fetch_secret_callback,
  66           user_interface_->GetTokenFetcher(config_.host_public_key),
  67           config_.authentication_methods));
  68
  69   // Create a WeakPtr to ourself for to use for all posted tasks.
  70   weak_ptr_ = weak_factory_.GetWeakPtr();
  71
  72   connection_->Connect(signal_strategy,
  73                        config_.host_jid,
  74                        config_.host_public_key,
  75                        transport_factory.Pass(),
  76                        authenticator.Pass(),
  77                        this,
  78                        this,
  79                        this,
  80                        rectangle_decoder_.get(),
  81                        audio_decode_scheduler_.get());
  82 }
  83
  84 FrameProducer* ChromotingClient::GetFrameProducer() {
  85   return rectangle_decoder_.get();
  86 }
  87
  88 ChromotingStats* ChromotingClient::GetStats() {
  89   DCHECK(task_runner_->BelongsToCurrentThread());
  90   return rectangle_decoder_->GetStats();
  91 }
  92
  93 void ChromotingClient::SetCapabilities(
  94     const protocol::Capabilities& capabilities) {
  95   DCHECK(task_runner_->BelongsToCurrentThread());
  96
  97   // Only accept the first |protocol::Capabilities| message.
  98   if (host_capabilities_received_) {
  99     LOG(WARNING) << "protocol::Capabilities has been received already.";
 100     return;
 101   }
 102
 103   host_capabilities_received_ = true;
 104   if (capabilities.has_capabilities())
 105     host_capabilities_ = capabilities.capabilities();
 106
 107   VLOG(1) << "Host capabilities: " << host_capabilities_;
 108
 109   // Calculate the set of capabilities enabled by both client and host and pass
 110   // it to the webapp.
 111   user_interface_->SetCapabilities(
 112       IntersectCapabilities(config_.capabilities, host_capabilities_));
 113 }
 114
 115 void ChromotingClient::SetPairingResponse(
 116     const protocol::PairingResponse& pairing_response) {
 117   DCHECK(task_runner_->BelongsToCurrentThread());
 118
 119   user_interface_->SetPairingResponse(pairing_response);
 120 }
 121
 122 void ChromotingClient::DeliverHostMessage(
 123     const protocol::ExtensionMessage& message) {
 124   DCHECK(task_runner_->BelongsToCurrentThread());
 125
 126   user_interface_->DeliverHostMessage(message);
 127 }
 128
 129 void ChromotingClient::InjectClipboardEvent(
 130     const protocol::ClipboardEvent& event) {
 131   DCHECK(task_runner_->BelongsToCurrentThread());
 132
 133   user_interface_->GetClipboardStub()->InjectClipboardEvent(event);
 134 }
 135
 136 void ChromotingClient::SetCursorShape(
 137     const protocol::CursorShapeInfo& cursor_shape) {
 138   DCHECK(task_runner_->BelongsToCurrentThread());
 139
 140   user_interface_->GetCursorShapeStub()->SetCursorShape(cursor_shape);
 141 }
 142
 143 void ChromotingClient::OnConnectionState(
 144     protocol::ConnectionToHost::State state,
 145     protocol::ErrorCode error) {
 146   DCHECK(task_runner_->BelongsToCurrentThread());
 147   VLOG(1) << "ChromotingClient::OnConnectionState(" << state << ")";
 148
 149   if (state == protocol::ConnectionToHost::AUTHENTICATED) {
 150     OnAuthenticated();
 151   } else if (state == protocol::ConnectionToHost::CONNECTED) {
 152     OnChannelsConnected();
 153   }
 154   user_interface_->OnConnectionState(state, error);
 155 }
 156
 157 void ChromotingClient::OnConnectionReady(bool ready) {
 158   VLOG(1) << "ChromotingClient::OnConnectionReady(" << ready << ")";
 159   user_interface_->OnConnectionReady(ready);
 160 }
 161
 162 void ChromotingClient::OnAuthenticated() {
 163   DCHECK(task_runner_->BelongsToCurrentThread());
 164
 165   // Initialize the decoder.
 166   rectangle_decoder_->Initialize(connection_->config());
 167   if (connection_->config().is_audio_enabled())
 168     audio_decode_scheduler_->Initialize(connection_->config());
 169
 170   // Do not negotiate capabilities with the host if the host does not support
 171   // them.
 172   if (!connection_->config().SupportsCapabilities()) {
 173     VLOG(1) << "The host does not support any capabilities.";
 174
 175     host_capabilities_received_ = true;
 176     user_interface_->SetCapabilities(host_capabilities_);
 177   }
 178 }
 179
 180 void ChromotingClient::OnChannelsConnected() {
 181   DCHECK(task_runner_->BelongsToCurrentThread());
 182
 183   // Negotiate capabilities with the host.
 184   if (connection_->config().SupportsCapabilities()) {
 185     VLOG(1) << "Client capabilities: " << config_.capabilities;
 186
 187     protocol::Capabilities capabilities;
 188     capabilities.set_capabilities(config_.capabilities);
 189     connection_->host_stub()->SetCapabilities(capabilities);
 190   }
 191 }
 192
 193 }  // namespace remoting