components/nacl/renderer/manifest_service_channel.h

   1 // Copyright 2014 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 COMPONENTS_NACL_RENDERER_MANIFEST_SERVICE_CHANNEL_H_
   6 #define COMPONENTS_NACL_RENDERER_MANIFEST_SERVICE_CHANNEL_H_
   7
   8 #include "base/callback.h"
   9 #include "base/files/file.h"
  10 #include "base/macros.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/memory/weak_ptr.h"
  13 #include "base/process/process.h"
  14 #include "base/synchronization/lock.h"
  15 #include "ipc/ipc_listener.h"
  16
  17 namespace base {
  18 class WaitableEvent;
  19 }  // namespace base
  20
  21 namespace IPC {
  22 struct ChannelHandle;
  23 class Message;
  24 class SyncChannel;
  25 }  // namespace IPC
  26
  27 namespace nacl {
  28
  29 class ManifestServiceChannel : public IPC::Listener {
  30  public:
  31   typedef base::Callback<void(base::File, uint64_t, uint64_t)>
  32       OpenResourceCallback;
  33
  34   class Delegate {
  35    public:
  36     virtual ~Delegate() {}
  37
  38     // Called when PPAPI initialization in the NaCl plugin is finished.
  39     virtual void StartupInitializationComplete() = 0;
  40
  41     // Called when irt_open_resource() is invoked in the NaCl plugin.
  42     // Upon completion, callback is invoked with the file.
  43     virtual void OpenResource(
  44         const std::string& key,
  45         const OpenResourceCallback& callback) = 0;
  46   };
  47
  48   ManifestServiceChannel(
  49       const IPC::ChannelHandle& handle,
  50       const base::Callback<void(int32_t)>& connected_callback,
  51       scoped_ptr<Delegate> delegate,
  52       base::WaitableEvent* waitable_event);
  53   ~ManifestServiceChannel() override;
  54
  55   void Send(IPC::Message* message);
  56
  57   // Listener implementation.
  58   bool OnMessageReceived(const IPC::Message& message) override;
  59   void OnChannelConnected(int32 peer_pid) override;
  60   void OnChannelError() override;
  61
  62  private:
  63   void OnStartupInitializationComplete();
  64   void OnOpenResource(const std::string& key, IPC::Message* reply);
  65   void DidOpenResource(IPC::Message* reply,
  66                        base::File file,
  67                        uint64_t token_lo,
  68                        uint64_t token_hi);
  69   base::Callback<void(int32_t)> connected_callback_;
  70   scoped_ptr<Delegate> delegate_;
  71   scoped_ptr<IPC::SyncChannel> channel_;
  72
  73   base::ProcessId peer_pid_;
  74
  75   // Note: This should remain the last member so it'll be destroyed and
  76   // invalidate the weak pointers before any other members are destroyed.
  77   base::WeakPtrFactory<ManifestServiceChannel> weak_ptr_factory_;
  78
  79   DISALLOW_COPY_AND_ASSIGN(ManifestServiceChannel);
  80 };
  81
  82 }  // namespace nacl
  83
  84 #endif  // COMPONENTS_NACL_RENDERER_MANIFEST_SERVICE_CHANNEL_H_