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      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_BROWSER_RENDERER_HOST_PEPPER_BROWSER_PPAPI_HOST_IMPL_H_
      6 #define CONTENT_BROWSER_RENDERER_HOST_PEPPER_BROWSER_PPAPI_HOST_IMPL_H_
      7 
      8 #include <map>
      9 #include <string>
     10 
     11 #include "base/basictypes.h"
     12 #include "base/compiler_specific.h"
     13 #include "base/files/file_path.h"
     14 #include "base/memory/ref_counted.h"
     15 #include "content/browser/renderer_host/pepper/content_browser_pepper_host_factory.h"
     16 #include "content/browser/renderer_host/pepper/pepper_message_filter.h"
     17 #include "content/common/content_export.h"
     18 #include "content/public/browser/browser_ppapi_host.h"
     19 #include "content/public/common/process_type.h"
     20 #include "ipc/ipc_channel_proxy.h"
     21 #include "ppapi/host/ppapi_host.h"
     22 
     23 namespace content {
     24 
     25 struct PepperRendererInstanceData;
     26 
     27 class CONTENT_EXPORT BrowserPpapiHostImpl : public BrowserPpapiHost {
     28  public:
     29   // The creator is responsible for calling set_plugin_process_handle as soon
     30   // as it is known (we start the process asynchronously so it won't be known
     31   // when this object is created).
     32   // |external_plugin| signfies that this is a proxy created for an embedder's
     33   // plugin, i.e. using BrowserPpapiHost::CreateExternalPluginProcess.
     34   BrowserPpapiHostImpl(
     35       IPC::Sender* sender,
     36       const ppapi::PpapiPermissions& permissions,
     37       const std::string& plugin_name,
     38       const base::FilePath& plugin_path,
     39       const base::FilePath& profile_data_directory,
     40       bool external_plugin,
     41       // TODO (ygorshenin@): remove this once TCP sockets are
     42       // converted to the new design.
     43       const scoped_refptr<PepperMessageFilter>& pepper_message_filter);
     44   virtual ~BrowserPpapiHostImpl();
     45 
     46   // BrowserPpapiHost.
     47   virtual ppapi::host::PpapiHost* GetPpapiHost() OVERRIDE;
     48   virtual base::ProcessHandle GetPluginProcessHandle() const OVERRIDE;
     49   virtual bool IsValidInstance(PP_Instance instance) const OVERRIDE;
     50   virtual bool GetRenderViewIDsForInstance(PP_Instance instance,
     51                                            int* render_process_id,
     52                                            int* render_view_id) const OVERRIDE;
     53   virtual const std::string& GetPluginName() OVERRIDE;
     54   virtual const base::FilePath& GetPluginPath() OVERRIDE;
     55   virtual const base::FilePath& GetProfileDataDirectory() OVERRIDE;
     56   virtual GURL GetDocumentURLForInstance(PP_Instance instance) OVERRIDE;
     57   virtual GURL GetPluginURLForInstance(PP_Instance instance) OVERRIDE;
     58 
     59   void set_plugin_process_handle(base::ProcessHandle handle) {
     60     plugin_process_handle_ = handle;
     61   }
     62 
     63   bool external_plugin() { return external_plugin_; }
     64 
     65   // These two functions are notifications that an instance has been created
     66   // or destroyed. They allow us to maintain a mapping of PP_Instance to data
     67   // associated with the instance including view IDs in the browser process.
     68   void AddInstance(PP_Instance instance,
     69                    const PepperRendererInstanceData& instance_data);
     70   void DeleteInstance(PP_Instance instance);
     71 
     72   scoped_refptr<IPC::ChannelProxy::MessageFilter> message_filter() {
     73     return message_filter_;
     74   }
     75 
     76  private:
     77   friend class BrowserPpapiHostTest;
     78 
     79   // Implementing MessageFilter on BrowserPpapiHostImpl makes it ref-counted,
     80   // preventing us from returning these to embedders without holding a
     81   // reference. To avoid that, define a message filter object.
     82   class HostMessageFilter : public IPC::ChannelProxy::MessageFilter {
     83    public:
     84     explicit HostMessageFilter(ppapi::host::PpapiHost* ppapi_host)
     85         : ppapi_host_(ppapi_host) {}
     86     // IPC::ChannelProxy::MessageFilter.
     87     virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
     88 
     89     void OnHostDestroyed();
     90 
     91    private:
     92     virtual ~HostMessageFilter() {}
     93 
     94     ppapi::host::PpapiHost* ppapi_host_;
     95   };
     96 
     97   scoped_ptr<ppapi::host::PpapiHost> ppapi_host_;
     98   base::ProcessHandle plugin_process_handle_;
     99   std::string plugin_name_;
    100   base::FilePath plugin_path_;
    101   base::FilePath profile_data_directory_;
    102 
    103   // If true, this is an external plugin, i.e. created by the embedder using
    104   // BrowserPpapiHost::CreateExternalPluginProcess.
    105   bool external_plugin_;
    106 
    107   // Tracks all PP_Instances in this plugin and associated renderer-related
    108   // data.
    109   typedef std::map<PP_Instance, PepperRendererInstanceData> InstanceMap;
    110   InstanceMap instance_map_;
    111 
    112   scoped_refptr<HostMessageFilter> message_filter_;
    113 
    114   DISALLOW_COPY_AND_ASSIGN(BrowserPpapiHostImpl);
    115 };
    116 
    117 }  // namespace content
    118 
    119 #endif  // CONTENT_BROWSER_RENDERER_HOST_PEPPER_BROWSER_PPAPI_HOST_IMPL_H_
    120