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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/ssl_context_helper.h"
     17 #include "content/common/content_export.h"
     18 #include "content/common/pepper_renderer_instance_data.h"
     19 #include "content/public/browser/browser_ppapi_host.h"
     20 #include "content/public/common/process_type.h"
     21 #include "ipc/ipc_channel_proxy.h"
     22 #include "ppapi/host/ppapi_host.h"
     23 
     24 namespace content {
     25 
     26 class CONTENT_EXPORT BrowserPpapiHostImpl : public BrowserPpapiHost {
     27  public:
     28   // The creator is responsible for calling set_plugin_process_handle as soon
     29   // as it is known (we start the process asynchronously so it won't be known
     30   // when this object is created).
     31   // |external_plugin| signfies that this is a proxy created for an embedder's
     32   // plugin, i.e. using BrowserPpapiHost::CreateExternalPluginProcess.
     33   BrowserPpapiHostImpl(
     34       IPC::Sender* sender,
     35       const ppapi::PpapiPermissions& permissions,
     36       const std::string& plugin_name,
     37       const base::FilePath& plugin_path,
     38       const base::FilePath& profile_data_directory,
     39       bool in_process,
     40       bool external_plugin);
     41   virtual ~BrowserPpapiHostImpl();
     42 
     43   // BrowserPpapiHost.
     44   virtual ppapi::host::PpapiHost* GetPpapiHost() OVERRIDE;
     45   virtual base::ProcessHandle GetPluginProcessHandle() const OVERRIDE;
     46   virtual bool IsValidInstance(PP_Instance instance) const OVERRIDE;
     47   virtual bool GetRenderViewIDsForInstance(PP_Instance instance,
     48                                            int* render_process_id,
     49                                            int* render_view_id) const OVERRIDE;
     50   virtual const std::string& GetPluginName() OVERRIDE;
     51   virtual const base::FilePath& GetPluginPath() OVERRIDE;
     52   virtual const base::FilePath& GetProfileDataDirectory() OVERRIDE;
     53   virtual GURL GetDocumentURLForInstance(PP_Instance instance) OVERRIDE;
     54   virtual GURL GetPluginURLForInstance(PP_Instance instance) OVERRIDE;
     55 
     56   void set_plugin_process_handle(base::ProcessHandle handle) {
     57     plugin_process_handle_ = handle;
     58   }
     59 
     60   bool in_process() const { return in_process_; }
     61   bool external_plugin() const { return external_plugin_; }
     62 
     63   // These two functions are notifications that an instance has been created
     64   // or destroyed. They allow us to maintain a mapping of PP_Instance to data
     65   // associated with the instance including view IDs in the browser process.
     66   void AddInstance(PP_Instance instance,
     67                    const PepperRendererInstanceData& instance_data);
     68   void DeleteInstance(PP_Instance instance);
     69 
     70   scoped_refptr<IPC::ChannelProxy::MessageFilter> message_filter() {
     71     return message_filter_;
     72   }
     73 
     74   const scoped_refptr<SSLContextHelper>& ssl_context_helper() const {
     75     return ssl_context_helper_;
     76   }
     77 
     78  private:
     79   friend class BrowserPpapiHostTest;
     80 
     81   // Implementing MessageFilter on BrowserPpapiHostImpl makes it ref-counted,
     82   // preventing us from returning these to embedders without holding a
     83   // reference. To avoid that, define a message filter object.
     84   class HostMessageFilter : public IPC::ChannelProxy::MessageFilter {
     85    public:
     86     explicit HostMessageFilter(ppapi::host::PpapiHost* ppapi_host)
     87         : ppapi_host_(ppapi_host) {}
     88     // IPC::ChannelProxy::MessageFilter.
     89     virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
     90 
     91     void OnHostDestroyed();
     92 
     93    private:
     94     virtual ~HostMessageFilter() {}
     95 
     96     ppapi::host::PpapiHost* ppapi_host_;
     97   };
     98 
     99   scoped_ptr<ppapi::host::PpapiHost> ppapi_host_;
    100   base::ProcessHandle plugin_process_handle_;
    101   std::string plugin_name_;
    102   base::FilePath plugin_path_;
    103   base::FilePath profile_data_directory_;
    104 
    105   // If true, this refers to a plugin running in the renderer process.
    106   bool in_process_;
    107 
    108   // If true, this is an external plugin, i.e. created by the embedder using
    109   // BrowserPpapiHost::CreateExternalPluginProcess.
    110   bool external_plugin_;
    111 
    112   scoped_refptr<SSLContextHelper> ssl_context_helper_;
    113 
    114   // Tracks all PP_Instances in this plugin and associated renderer-related
    115   // data.
    116   typedef std::map<PP_Instance, PepperRendererInstanceData> InstanceMap;
    117   InstanceMap instance_map_;
    118 
    119   scoped_refptr<HostMessageFilter> message_filter_;
    120 
    121   DISALLOW_COPY_AND_ASSIGN(BrowserPpapiHostImpl);
    122 };
    123 
    124 }  // namespace content
    125 
    126 #endif  // CONTENT_BROWSER_RENDERER_HOST_PEPPER_BROWSER_PPAPI_HOST_IMPL_H_
    127