chrome/browser/renderer_host/pepper/chrome_browser_pepper_host_factory.cc

   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 #include "chrome/browser/renderer_host/pepper/chrome_browser_pepper_host_factory.h"
   6
   7 #include "build/build_config.h"
   8 #include "chrome/browser/renderer_host/pepper/pepper_broker_message_filter.h"
   9 #include "chrome/browser/renderer_host/pepper/pepper_flash_browser_host.h"
  10 #include "chrome/browser/renderer_host/pepper/pepper_flash_clipboard_message_filter.h"
  11 #include "chrome/browser/renderer_host/pepper/pepper_flash_drm_host.h"
  12 #include "chrome/browser/renderer_host/pepper/pepper_isolated_file_system_message_filter.h"
  13 #include "chrome/browser/renderer_host/pepper/pepper_output_protection_message_filter.h"
  14 #include "chrome/browser/renderer_host/pepper/pepper_platform_verification_message_filter.h"
  15 #include "content/public/browser/browser_ppapi_host.h"
  16 #include "ppapi/host/message_filter_host.h"
  17 #include "ppapi/host/ppapi_host.h"
  18 #include "ppapi/host/resource_host.h"
  19 #include "ppapi/proxy/ppapi_messages.h"
  20 #include "ppapi/shared_impl/ppapi_permissions.h"
  21
  22 using ppapi::host::MessageFilterHost;
  23 using ppapi::host::ResourceHost;
  24 using ppapi::host::ResourceMessageFilter;
  25
  26 ChromeBrowserPepperHostFactory::ChromeBrowserPepperHostFactory(
  27     content::BrowserPpapiHost* host)
  28     : host_(host) {}
  29
  30 ChromeBrowserPepperHostFactory::~ChromeBrowserPepperHostFactory() {}
  31
  32 scoped_ptr<ResourceHost> ChromeBrowserPepperHostFactory::CreateResourceHost(
  33     ppapi::host::PpapiHost* host,
  34     PP_Resource resource,
  35     PP_Instance instance,
  36     const IPC::Message& message) {
  37   DCHECK(host == host_->GetPpapiHost());
  38
  39   // Make sure the plugin is giving us a valid instance for this resource.
  40   if (!host_->IsValidInstance(instance))
  41     return scoped_ptr<ResourceHost>();
  42
  43   // Private interfaces.
  44   if (host_->GetPpapiHost()->permissions().HasPermission(
  45           ppapi::PERMISSION_PRIVATE)) {
  46     switch (message.type()) {
  47       case PpapiHostMsg_Broker_Create::ID: {
  48         scoped_refptr<ResourceMessageFilter> broker_filter(
  49             new chrome::PepperBrokerMessageFilter(instance, host_));
  50         return scoped_ptr<ResourceHost>(new MessageFilterHost(
  51             host_->GetPpapiHost(), instance, resource, broker_filter));
  52       }
  53 #if defined(OS_CHROMEOS)
  54       case PpapiHostMsg_PlatformVerification_Create::ID: {
  55         scoped_refptr<ResourceMessageFilter> pv_filter(
  56             new chrome::PepperPlatformVerificationMessageFilter(host_,
  57                                                                 instance));
  58         return scoped_ptr<ResourceHost>(new MessageFilterHost(
  59             host_->GetPpapiHost(), instance, resource, pv_filter));
  60       }
  61 #endif
  62 #if defined(OS_CHROMEOS)
  63       case PpapiHostMsg_OutputProtection_Create::ID: {
  64         scoped_refptr<ResourceMessageFilter> output_protection_filter(
  65             new chrome::PepperOutputProtectionMessageFilter(host_, instance));
  66         return scoped_ptr<ResourceHost>(
  67             new MessageFilterHost(host_->GetPpapiHost(), instance, resource,
  68                                   output_protection_filter));
  69       }
  70 #endif
  71     }
  72   }
  73
  74   // Flash interfaces.
  75   if (host_->GetPpapiHost()->permissions().HasPermission(
  76           ppapi::PERMISSION_FLASH)) {
  77     switch (message.type()) {
  78       case PpapiHostMsg_Flash_Create::ID:
  79         return scoped_ptr<ResourceHost>(
  80             new chrome::PepperFlashBrowserHost(host_, instance, resource));
  81       case PpapiHostMsg_FlashClipboard_Create::ID: {
  82         scoped_refptr<ResourceMessageFilter> clipboard_filter(
  83             new chrome::PepperFlashClipboardMessageFilter);
  84         return scoped_ptr<ResourceHost>(new MessageFilterHost(
  85             host_->GetPpapiHost(), instance, resource, clipboard_filter));
  86       }
  87       case PpapiHostMsg_FlashDRM_Create::ID:
  88         return scoped_ptr<ResourceHost>(
  89             new chrome::PepperFlashDRMHost(host_, instance, resource));
  90     }
  91   }
  92
  93   // Permissions for the following interfaces will be checked at the
  94   // time of the corresponding instance's methods calls (because
  95   // permission check can be performed only on the UI
  96   // thread). Currently these interfaces are available only for
  97   // whitelisted apps which may not have access to the other private
  98   // interfaces.
  99   if (message.type() == PpapiHostMsg_IsolatedFileSystem_Create::ID) {
 100     chrome::PepperIsolatedFileSystemMessageFilter* isolated_fs_filter =
 101         chrome::PepperIsolatedFileSystemMessageFilter::Create(instance, host_);
 102     if (!isolated_fs_filter)
 103       return scoped_ptr<ResourceHost>();
 104     return scoped_ptr<ResourceHost>(
 105         new MessageFilterHost(host, instance, resource, isolated_fs_filter));
 106   }
 107
 108   return scoped_ptr<ResourceHost>();
 109 }