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      1 // Copyright (c) 2013 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_PEPPER_HOST_DISPATCHER_WRAPPER_H_
      6 #define CONTENT_RENDERER_PEPPER_HOST_DISPATCHER_WRAPPER_H_
      7 
      8 #include "base/process/process_handle.h"
      9 #include "ppapi/c/pp_instance.h"
     10 #include "ppapi/c/ppp.h"
     11 #include "ppapi/proxy/host_dispatcher.h"
     12 #include "ppapi/shared_impl/ppapi_permissions.h"
     13 
     14 namespace IPC {
     15 struct ChannelHandle;
     16 }
     17 
     18 namespace content {
     19 class PepperHungPluginFilter;
     20 class PluginModule;
     21 
     22 // This class wraps a dispatcher and has the same lifetime. A dispatcher has
     23 // the same lifetime as a plugin module, which is longer than any particular
     24 // RenderView or plugin instance.
     25 class HostDispatcherWrapper {
     26  public:
     27   HostDispatcherWrapper(PluginModule* module,
     28                         base::ProcessId peer_pid,
     29                         int plugin_child_id,
     30                         const ppapi::PpapiPermissions& perms,
     31                         bool is_external);
     32   virtual ~HostDispatcherWrapper();
     33 
     34   bool Init(const IPC::ChannelHandle& channel_handle,
     35             PP_GetInterface_Func local_get_interface,
     36             const ppapi::Preferences& preferences,
     37             PepperHungPluginFilter* filter);
     38 
     39   // Implements GetInterface for the proxied plugin.
     40   const void* GetProxiedInterface(const char* name);
     41 
     42   // Notification to the out-of-process layer that the given plugin instance
     43   // has been created. This will happen before the normal PPB_Instance method
     44   // calls so the out-of-process code can set up the tracking information for
     45   // the new instance.
     46   void AddInstance(PP_Instance instance);
     47 
     48   // Like AddInstance but removes the given instance. This is called after
     49   // regular instance shutdown so the out-of-process code can clean up its
     50   // tracking information.
     51   void RemoveInstance(PP_Instance instance);
     52 
     53   base::ProcessId peer_pid() { return peer_pid_; }
     54   int plugin_child_id() { return plugin_child_id_; }
     55   ppapi::proxy::HostDispatcher* dispatcher() { return dispatcher_.get(); }
     56 
     57  private:
     58   PluginModule* module_;
     59 
     60   base::ProcessId peer_pid_;
     61 
     62   // ID that the browser process uses to idetify the child process for the
     63   // plugin. This isn't directly useful from our process (the renderer) except
     64   // in messages to the browser to disambiguate plugins.
     65   int plugin_child_id_;
     66 
     67   ppapi::PpapiPermissions permissions_;
     68   bool is_external_;
     69 
     70   scoped_ptr<ppapi::proxy::HostDispatcher> dispatcher_;
     71   scoped_ptr<ppapi::proxy::ProxyChannel::Delegate> dispatcher_delegate_;
     72 };
     73 
     74 }  // namespace content
     75 
     76 #endif  // CONTENT_RENDERER_PEPPER_HOST_DISPATCHER_WRAPPER_H_
     77