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#ifndef CONTENT_RENDERER_NPAPI_PLUGIN_CHANNEL_HOST_H_
6#define CONTENT_RENDERER_NPAPI_PLUGIN_CHANNEL_HOST_H_
7
8#include "base/containers/hash_tables.h"
9#include "content/child/npapi/np_channel_base.h"
10#include "ipc/ipc_channel_handle.h"
11
12namespace content {
13class NPObjectBase;
14
15// Encapsulates an IPC channel between the renderer and one plugin process.
16// On the plugin side there's a corresponding PluginChannel.
17class PluginChannelHost : public NPChannelBase {
18 public:
19#if defined(OS_MACOSX)
20  // TODO(shess): Debugging for http://crbug.com/97285 .  See comment
21  // in plugin_channel_host.cc.
22  static bool* GetRemoveTrackingFlag();
23#endif
24  static PluginChannelHost* GetPluginChannelHost(
25      const IPC::ChannelHandle& channel_handle,
26      base::MessageLoopProxy* ipc_message_loop);
27
28  virtual bool Init(base::MessageLoopProxy* ipc_message_loop,
29                    bool create_pipe_now,
30                    base::WaitableEvent* shutdown_event) OVERRIDE;
31
32  virtual int GenerateRouteID() OVERRIDE;
33
34  void AddRoute(int route_id, IPC::Listener* listener,
35                NPObjectBase* npobject);
36  void RemoveRoute(int route_id);
37
38  // NPChannelBase override:
39  virtual bool Send(IPC::Message* msg) OVERRIDE;
40
41  // IPC::Listener override
42  virtual void OnChannelError() OVERRIDE;
43
44  static void Broadcast(IPC::Message* message) {
45    NPChannelBase::Broadcast(message);
46  }
47
48  bool expecting_shutdown() { return expecting_shutdown_; }
49
50 private:
51  // Called on the render thread
52  PluginChannelHost();
53  virtual ~PluginChannelHost();
54
55  static NPChannelBase* ClassFactory() { return new PluginChannelHost(); }
56
57  virtual bool OnControlMessageReceived(const IPC::Message& message) OVERRIDE;
58  void OnSetException(const std::string& message);
59  void OnPluginShuttingDown();
60
61  // Keep track of all the registered WebPluginDelegeProxies to
62  // inform about OnChannelError
63  typedef base::hash_map<int, IPC::Listener*> ProxyMap;
64  ProxyMap proxies_;
65
66  // True if we are expecting the plugin process to go away - in which case,
67  // don't treat it as a crash.
68  bool expecting_shutdown_;
69
70  DISALLOW_COPY_AND_ASSIGN(PluginChannelHost);
71};
72
73}  // namespace content
74
75#endif  // CONTENT_RENDERER_NPAPI_PLUGIN_CHANNEL_HOST_H_
76