content/renderer/p2p/socket_dispatcher.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 "content/renderer/p2p/socket_dispatcher.h"
   6
   7 #include "base/bind.h"
   8 #include "base/memory/ref_counted.h"
   9 #include "base/message_loop/message_loop_proxy.h"
  10 #include "content/child/child_process.h"
  11 #include "content/common/p2p_messages.h"
  12 #include "content/renderer/p2p/host_address_request.h"
  13 #include "content/renderer/p2p/network_list_observer.h"
  14 #include "content/renderer/p2p/socket_client_impl.h"
  15 #include "content/renderer/render_view_impl.h"
  16 #include "ipc/ipc_channel.h"
  17
  18 namespace content {
  19
  20 P2PSocketDispatcher::P2PSocketDispatcher(
  21     base::MessageLoopProxy* ipc_message_loop)
  22     : message_loop_(ipc_message_loop),
  23       network_notifications_started_(false),
  24       network_list_observers_(
  25           new ObserverListThreadSafe<NetworkListObserver>()),
  26       channel_(NULL) {
  27 }
  28
  29 P2PSocketDispatcher::~P2PSocketDispatcher() {
  30   network_list_observers_->AssertEmpty();
  31   for (IDMap<P2PSocketClientImpl>::iterator i(&clients_); !i.IsAtEnd();
  32        i.Advance()) {
  33     i.GetCurrentValue()->Detach();
  34   }
  35 }
  36
  37 void P2PSocketDispatcher::AddNetworkListObserver(
  38     NetworkListObserver* network_list_observer) {
  39   network_list_observers_->AddObserver(network_list_observer);
  40   network_notifications_started_ = true;
  41   SendP2PMessage(new P2PHostMsg_StartNetworkNotifications());
  42 }
  43
  44 void P2PSocketDispatcher::RemoveNetworkListObserver(
  45     NetworkListObserver* network_list_observer) {
  46   network_list_observers_->RemoveObserver(network_list_observer);
  47 }
  48
  49 void P2PSocketDispatcher::Send(IPC::Message* message) {
  50   DCHECK(message_loop_->BelongsToCurrentThread());
  51   if (!channel_) {
  52     DLOG(WARNING) << "P2PSocketDispatcher::Send() - Channel closed.";
  53     delete message;
  54     return;
  55   }
  56
  57   channel_->Send(message);
  58 }
  59
  60 bool P2PSocketDispatcher::OnMessageReceived(const IPC::Message& message) {
  61   bool handled = true;
  62   IPC_BEGIN_MESSAGE_MAP(P2PSocketDispatcher, message)
  63     IPC_MESSAGE_HANDLER(P2PMsg_NetworkListChanged, OnNetworkListChanged)
  64     IPC_MESSAGE_HANDLER(P2PMsg_GetHostAddressResult, OnGetHostAddressResult)
  65     IPC_MESSAGE_HANDLER(P2PMsg_OnSocketCreated, OnSocketCreated)
  66     IPC_MESSAGE_HANDLER(P2PMsg_OnIncomingTcpConnection, OnIncomingTcpConnection)
  67     IPC_MESSAGE_HANDLER(P2PMsg_OnSendComplete, OnSendComplete)
  68     IPC_MESSAGE_HANDLER(P2PMsg_OnError, OnError)
  69     IPC_MESSAGE_HANDLER(P2PMsg_OnDataReceived, OnDataReceived)
  70     IPC_MESSAGE_UNHANDLED(handled = false)
  71   IPC_END_MESSAGE_MAP()
  72   return handled;
  73 }
  74
  75 void P2PSocketDispatcher::OnFilterAdded(IPC::Channel* channel) {
  76   DVLOG(1) << "P2PSocketDispatcher::OnFilterAdded()";
  77   channel_ = channel;
  78 }
  79
  80 void P2PSocketDispatcher::OnFilterRemoved() {
  81   channel_ = NULL;
  82 }
  83
  84 void P2PSocketDispatcher::OnChannelClosing() {
  85   channel_ = NULL;
  86 }
  87
  88 base::MessageLoopProxy* P2PSocketDispatcher::message_loop() {
  89   return message_loop_.get();
  90 }
  91
  92 int P2PSocketDispatcher::RegisterClient(P2PSocketClientImpl* client) {
  93   DCHECK(message_loop_->BelongsToCurrentThread());
  94   return clients_.Add(client);
  95 }
  96
  97 void P2PSocketDispatcher::UnregisterClient(int id) {
  98   DCHECK(message_loop_->BelongsToCurrentThread());
  99   clients_.Remove(id);
 100 }
 101
 102 void P2PSocketDispatcher::SendP2PMessage(IPC::Message* msg) {
 103   if (!message_loop_->BelongsToCurrentThread()) {
 104     message_loop_->PostTask(FROM_HERE,
 105                             base::Bind(&P2PSocketDispatcher::Send,
 106                                        this, msg));
 107     return;
 108   }
 109   Send(msg);
 110 }
 111
 112 int P2PSocketDispatcher::RegisterHostAddressRequest(
 113     P2PAsyncAddressResolver* request) {
 114   DCHECK(message_loop_->BelongsToCurrentThread());
 115   return host_address_requests_.Add(request);
 116 }
 117
 118 void P2PSocketDispatcher::UnregisterHostAddressRequest(int id) {
 119   DCHECK(message_loop_->BelongsToCurrentThread());
 120   host_address_requests_.Remove(id);
 121 }
 122
 123 void P2PSocketDispatcher::OnNetworkListChanged(
 124     const net::NetworkInterfaceList& networks) {
 125   network_list_observers_->Notify(
 126       &NetworkListObserver::OnNetworkListChanged, networks);
 127 }
 128
 129 void P2PSocketDispatcher::OnGetHostAddressResult(
 130     int32 request_id,
 131     const net::IPAddressList& addresses) {
 132   P2PAsyncAddressResolver* request = host_address_requests_.Lookup(request_id);
 133   if (!request) {
 134     VLOG(1) << "Received P2P message for socket that doesn't exist.";
 135     return;
 136   }
 137
 138   request->OnResponse(addresses);
 139 }
 140
 141 void P2PSocketDispatcher::OnSocketCreated(
 142     int socket_id, const net::IPEndPoint& address) {
 143   P2PSocketClientImpl* client = GetClient(socket_id);
 144   if (client) {
 145     client->OnSocketCreated(address);
 146   }
 147 }
 148
 149 void P2PSocketDispatcher::OnIncomingTcpConnection(
 150     int socket_id, const net::IPEndPoint& address) {
 151   P2PSocketClientImpl* client = GetClient(socket_id);
 152   if (client) {
 153     client->OnIncomingTcpConnection(address);
 154   }
 155 }
 156
 157 void P2PSocketDispatcher::OnSendComplete(int socket_id) {
 158   P2PSocketClientImpl* client = GetClient(socket_id);
 159   if (client) {
 160     client->OnSendComplete();
 161   }
 162 }
 163
 164 void P2PSocketDispatcher::OnError(int socket_id) {
 165   P2PSocketClientImpl* client = GetClient(socket_id);
 166   if (client) {
 167     client->OnError();
 168   }
 169 }
 170
 171 void P2PSocketDispatcher::OnDataReceived(
 172     int socket_id, const net::IPEndPoint& address,
 173     const std::vector<char>& data,
 174     const base::TimeTicks& timestamp) {
 175   P2PSocketClientImpl* client = GetClient(socket_id);
 176   if (client) {
 177     client->OnDataReceived(address, data, timestamp);
 178   }
 179 }
 180
 181 P2PSocketClientImpl* P2PSocketDispatcher::GetClient(int socket_id) {
 182   P2PSocketClientImpl* client = clients_.Lookup(socket_id);
 183   if (client == NULL) {
 184     // This may happen if the socket was closed, but the browser side
 185     // hasn't processed the close message by the time it sends the
 186     // message to the renderer.
 187     VLOG(1) << "Received P2P message for socket that doesn't exist.";
 188     return NULL;
 189   }
 190
 191   return client;
 192 }
 193
 194 }  // namespace content