src/content/browser/renderer_host/pepper/browser_ppapi_host_impl.h

   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 "base/memory/weak_ptr.h"
  16 #include "content/browser/renderer_host/pepper/content_browser_pepper_host_factory.h"
  17 #include "content/browser/renderer_host/pepper/ssl_context_helper.h"
  18 #include "content/common/content_export.h"
  19 #include "content/common/pepper_renderer_instance_data.h"
  20 #include "content/public/browser/browser_ppapi_host.h"
  21 #include "content/public/common/process_type.h"
  22 #include "ipc/message_filter.h"
  23 #include "ppapi/host/ppapi_host.h"
  24
  25 namespace content {
  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(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 GetRenderFrameIDsForInstance(PP_Instance instance,
  48                                             int* render_process_id,
  49                                             int* render_frame_id) const
  50       OVERRIDE;
  51   virtual const std::string& GetPluginName() OVERRIDE;
  52   virtual const base::FilePath& GetPluginPath() OVERRIDE;
  53   virtual const base::FilePath& GetProfileDataDirectory() OVERRIDE;
  54   virtual GURL GetDocumentURLForInstance(PP_Instance instance) OVERRIDE;
  55   virtual GURL GetPluginURLForInstance(PP_Instance instance) OVERRIDE;
  56   virtual void SetOnKeepaliveCallback(
  57       const BrowserPpapiHost::OnKeepaliveCallback& callback) OVERRIDE;
  58
  59   void set_plugin_process_handle(base::ProcessHandle handle) {
  60     plugin_process_handle_ = handle;
  61   }
  62
  63   bool external_plugin() const { 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::MessageFilter> message_filter() {
  73     return message_filter_;
  74   }
  75
  76   const scoped_refptr<SSLContextHelper>& ssl_context_helper() const {
  77     return ssl_context_helper_;
  78   }
  79
  80  private:
  81   friend class BrowserPpapiHostTest;
  82
  83   // Implementing MessageFilter on BrowserPpapiHostImpl makes it ref-counted,
  84   // preventing us from returning these to embedders without holding a
  85   // reference. To avoid that, define a message filter object.
  86   class HostMessageFilter : public IPC::MessageFilter {
  87    public:
  88     HostMessageFilter(ppapi::host::PpapiHost* ppapi_host,
  89                       BrowserPpapiHostImpl* browser_ppapi_host_impl);
  90
  91     // IPC::MessageFilter.
  92     virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
  93
  94     void OnHostDestroyed();
  95
  96    private:
  97     virtual ~HostMessageFilter();
  98
  99     void OnKeepalive();
 100     void OnHostMsgLogInterfaceUsage(int hash) const;
 101
 102     // Non owning pointers cleared in OnHostDestroyed()
 103     ppapi::host::PpapiHost* ppapi_host_;
 104     BrowserPpapiHostImpl* browser_ppapi_host_impl_;
 105   };
 106
 107   // Reports plugin activity to the callback set with SetOnKeepaliveCallback.
 108   void OnKeepalive();
 109
 110   scoped_ptr<ppapi::host::PpapiHost> ppapi_host_;
 111   base::ProcessHandle plugin_process_handle_;
 112   std::string plugin_name_;
 113   base::FilePath plugin_path_;
 114   base::FilePath profile_data_directory_;
 115
 116   // If true, this refers to a plugin running in the renderer process.
 117   bool in_process_;
 118
 119   // If true, this is an external plugin, i.e. created by the embedder using
 120   // BrowserPpapiHost::CreateExternalPluginProcess.
 121   bool external_plugin_;
 122
 123   scoped_refptr<SSLContextHelper> ssl_context_helper_;
 124
 125   // Tracks all PP_Instances in this plugin and associated renderer-related
 126   // data.
 127   typedef std::map<PP_Instance, PepperRendererInstanceData> InstanceMap;
 128   InstanceMap instance_map_;
 129
 130   scoped_refptr<HostMessageFilter> message_filter_;
 131
 132   BrowserPpapiHost::OnKeepaliveCallback on_keepalive_callback_;
 133
 134   DISALLOW_COPY_AND_ASSIGN(BrowserPpapiHostImpl);
 135 };
 136
 137 }  // namespace content
 138
 139 #endif  // CONTENT_BROWSER_RENDERER_HOST_PEPPER_BROWSER_PPAPI_HOST_IMPL_H_