content/renderer/pepper/content_renderer_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 "content/renderer/pepper/content_renderer_pepper_host_factory.h"
   6
   7 #include "base/logging.h"
   8 #include "base/strings/string_util.h"
   9 #include "content/common/content_switches_internal.h"
  10 #include "content/public/common/content_client.h"
  11 #include "content/public/renderer/content_renderer_client.h"
  12 #include "content/renderer/pepper/pepper_audio_input_host.h"
  13 #include "content/renderer/pepper/pepper_compositor_host.h"
  14 #include "content/renderer/pepper/pepper_file_chooser_host.h"
  15 #include "content/renderer/pepper/pepper_file_ref_renderer_host.h"
  16 #include "content/renderer/pepper/pepper_file_system_host.h"
  17 #include "content/renderer/pepper/pepper_graphics_2d_host.h"
  18 #include "content/renderer/pepper/pepper_media_stream_video_track_host.h"
  19 #include "content/renderer/pepper/pepper_plugin_instance_impl.h"
  20 #include "content/renderer/pepper/pepper_url_loader_host.h"
  21 #include "content/renderer/pepper/pepper_video_capture_host.h"
  22 #include "content/renderer/pepper/pepper_video_decoder_host.h"
  23 #include "content/renderer/pepper/pepper_video_destination_host.h"
  24 #include "content/renderer/pepper/pepper_video_source_host.h"
  25 #include "content/renderer/pepper/pepper_websocket_host.h"
  26 #include "content/renderer/pepper/ppb_image_data_impl.h"
  27 #include "content/renderer/pepper/renderer_ppapi_host_impl.h"
  28 #include "ppapi/host/resource_host.h"
  29 #include "ppapi/proxy/ppapi_message_utils.h"
  30 #include "ppapi/proxy/ppapi_messages.h"
  31 #include "ppapi/proxy/serialized_structs.h"
  32 #include "ppapi/shared_impl/ppb_image_data_shared.h"
  33 #include "third_party/WebKit/public/platform/WebURL.h"
  34 #include "third_party/WebKit/public/web/WebDocument.h"
  35 #include "third_party/WebKit/public/web/WebElement.h"
  36 #include "third_party/WebKit/public/web/WebPluginContainer.h"
  37
  38 #if defined(OS_WIN)
  39 #include "base/win/windows_version.h"
  40 #endif
  41
  42 using ppapi::host::ResourceHost;
  43 using ppapi::UnpackMessage;
  44
  45 namespace content {
  46
  47 namespace {
  48
  49 #if defined(ENABLE_WEBRTC)
  50 bool CanUseMediaStreamAPI(const RendererPpapiHost* host, PP_Instance instance) {
  51   blink::WebPluginContainer* container =
  52       host->GetContainerForInstance(instance);
  53   if (!container)
  54     return false;
  55
  56   GURL document_url = container->element().document().url();
  57   ContentRendererClient* content_renderer_client =
  58       GetContentClient()->renderer();
  59   return content_renderer_client->AllowPepperMediaStreamAPI(document_url);
  60 }
  61 #endif  // defined(ENABLE_WEBRTC)
  62
  63 bool CanUseCompositorAPI(const RendererPpapiHost* host, PP_Instance instance) {
  64   blink::WebPluginContainer* container =
  65       host->GetContainerForInstance(instance);
  66   if (!container)
  67     return false;
  68
  69   GURL document_url = container->element().document().url();
  70   ContentRendererClient* content_renderer_client =
  71       GetContentClient()->renderer();
  72   return content_renderer_client->IsPluginAllowedToUseCompositorAPI(
  73       document_url);
  74 }
  75
  76 }  // namespace
  77
  78 ContentRendererPepperHostFactory::ContentRendererPepperHostFactory(
  79     RendererPpapiHostImpl* host)
  80     : host_(host) {}
  81
  82 ContentRendererPepperHostFactory::~ContentRendererPepperHostFactory() {}
  83
  84 scoped_ptr<ResourceHost> ContentRendererPepperHostFactory::CreateResourceHost(
  85     ppapi::host::PpapiHost* host,
  86     PP_Resource resource,
  87     PP_Instance instance,
  88     const IPC::Message& message) {
  89   DCHECK(host == host_->GetPpapiHost());
  90
  91   // Make sure the plugin is giving us a valid instance for this resource.
  92   if (!host_->IsValidInstance(instance))
  93     return scoped_ptr<ResourceHost>();
  94
  95   PepperPluginInstanceImpl* instance_impl =
  96       host_->GetPluginInstanceImpl(instance);
  97   if (!instance_impl->render_frame())
  98     return scoped_ptr<ResourceHost>();
  99
 100   // Public interfaces.
 101   switch (message.type()) {
 102     case PpapiHostMsg_Compositor_Create::ID: {
 103       if (!CanUseCompositorAPI(host_, instance))
 104         return scoped_ptr<ResourceHost>();
 105       return scoped_ptr<ResourceHost>(
 106           new PepperCompositorHost(host_, instance, resource));
 107     }
 108     case PpapiHostMsg_FileRef_CreateForFileAPI::ID: {
 109       PP_Resource file_system;
 110       std::string internal_path;
 111       if (!UnpackMessage<PpapiHostMsg_FileRef_CreateForFileAPI>(
 112               message, &file_system, &internal_path)) {
 113         NOTREACHED();
 114         return scoped_ptr<ResourceHost>();
 115       }
 116       return scoped_ptr<ResourceHost>(new PepperFileRefRendererHost(
 117           host_, instance, resource, file_system, internal_path));
 118     }
 119     case PpapiHostMsg_FileSystem_Create::ID: {
 120       PP_FileSystemType file_system_type;
 121       if (!UnpackMessage<PpapiHostMsg_FileSystem_Create>(message,
 122                                                          &file_system_type)) {
 123         NOTREACHED();
 124         return scoped_ptr<ResourceHost>();
 125       }
 126       return scoped_ptr<ResourceHost>(new PepperFileSystemHost(
 127           host_, instance, resource, file_system_type));
 128     }
 129     case PpapiHostMsg_Graphics2D_Create::ID: {
 130       PP_Size size;
 131       PP_Bool is_always_opaque;
 132       if (!UnpackMessage<PpapiHostMsg_Graphics2D_Create>(
 133               message, &size, &is_always_opaque)) {
 134         NOTREACHED();
 135         return scoped_ptr<ResourceHost>();
 136       }
 137       ppapi::PPB_ImageData_Shared::ImageDataType image_type =
 138           ppapi::PPB_ImageData_Shared::PLATFORM;
 139 #if defined(OS_WIN)
 140       // If Win32K lockdown mitigations are enabled for Windows 8 and beyond
 141       // we use the SIMPLE image data type as the PLATFORM image data type
 142       // calls GDI functions to create DIB sections etc which fail in Win32K
 143       // lockdown mode.
 144       // TODO(ananta)
 145       // Look into whether this causes a loss of functionality. From cursory
 146       // testing things seem to work well.
 147       if (IsWin32kRendererLockdownEnabled())
 148         image_type = ppapi::PPB_ImageData_Shared::SIMPLE;
 149 #endif
 150       scoped_refptr<PPB_ImageData_Impl> image_data(new PPB_ImageData_Impl(
 151           instance, image_type));
 152       return scoped_ptr<ResourceHost>(PepperGraphics2DHost::Create(
 153           host_, instance, resource, size, is_always_opaque, image_data));
 154     }
 155     case PpapiHostMsg_URLLoader_Create::ID:
 156       return scoped_ptr<ResourceHost>(
 157           new PepperURLLoaderHost(host_, false, instance, resource));
 158     case PpapiHostMsg_VideoDecoder_Create::ID:
 159       return scoped_ptr<ResourceHost>(
 160           new PepperVideoDecoderHost(host_, instance, resource));
 161     case PpapiHostMsg_WebSocket_Create::ID:
 162       return scoped_ptr<ResourceHost>(
 163           new PepperWebSocketHost(host_, instance, resource));
 164 #if defined(ENABLE_WEBRTC)
 165     case PpapiHostMsg_MediaStreamVideoTrack_Create::ID:
 166       return scoped_ptr<ResourceHost>(
 167           new PepperMediaStreamVideoTrackHost(host_, instance, resource));
 168     // These private MediaStream interfaces are exposed as if they were public
 169     // so they can be used by NaCl plugins. However, they are available only
 170     // for whitelisted apps.
 171     case PpapiHostMsg_VideoDestination_Create::ID:
 172       if (CanUseMediaStreamAPI(host_, instance))
 173         return scoped_ptr<ResourceHost>(
 174             new PepperVideoDestinationHost(host_, instance, resource));
 175     case PpapiHostMsg_VideoSource_Create::ID:
 176       if (CanUseMediaStreamAPI(host_, instance))
 177         return scoped_ptr<ResourceHost>(
 178             new PepperVideoSourceHost(host_, instance, resource));
 179 #endif  // defined(ENABLE_WEBRTC)
 180   }
 181
 182   // Dev interfaces.
 183   if (GetPermissions().HasPermission(ppapi::PERMISSION_DEV)) {
 184     switch (message.type()) {
 185       case PpapiHostMsg_AudioInput_Create::ID:
 186         return scoped_ptr<ResourceHost>(
 187             new PepperAudioInputHost(host_, instance, resource));
 188       case PpapiHostMsg_FileChooser_Create::ID:
 189         return scoped_ptr<ResourceHost>(
 190             new PepperFileChooserHost(host_, instance, resource));
 191       case PpapiHostMsg_VideoCapture_Create::ID: {
 192         PepperVideoCaptureHost* host =
 193             new PepperVideoCaptureHost(host_, instance, resource);
 194         if (!host->Init()) {
 195           delete host;
 196           return scoped_ptr<ResourceHost>();
 197         }
 198         return scoped_ptr<ResourceHost>(host);
 199       }
 200     }
 201   }
 202
 203   return scoped_ptr<ResourceHost>();
 204 }
 205
 206 const ppapi::PpapiPermissions&
 207 ContentRendererPepperHostFactory::GetPermissions() const {
 208   return host_->GetPpapiHost()->permissions();
 209 }
 210
 211 }  // namespace content