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/public/common/content_client.h"
  10 #include "content/public/renderer/content_renderer_client.h"
  11 #include "content/renderer/pepper/pepper_audio_input_host.h"
  12 #include "content/renderer/pepper/pepper_compositor_host.h"
  13 #include "content/renderer/pepper/pepper_file_chooser_host.h"
  14 #include "content/renderer/pepper/pepper_file_ref_renderer_host.h"
  15 #include "content/renderer/pepper/pepper_file_system_host.h"
  16 #include "content/renderer/pepper/pepper_graphics_2d_host.h"
  17 #include "content/renderer/pepper/pepper_media_stream_video_track_host.h"
  18 #include "content/renderer/pepper/pepper_plugin_instance_impl.h"
  19 #include "content/renderer/pepper/pepper_url_loader_host.h"
  20 #include "content/renderer/pepper/pepper_video_capture_host.h"
  21 #include "content/renderer/pepper/pepper_video_decoder_host.h"
  22 #include "content/renderer/pepper/pepper_video_destination_host.h"
  23 #include "content/renderer/pepper/pepper_video_source_host.h"
  24 #include "content/renderer/pepper/pepper_websocket_host.h"
  25 #include "content/renderer/pepper/ppb_image_data_impl.h"
  26 #include "content/renderer/pepper/renderer_ppapi_host_impl.h"
  27 #include "ppapi/host/resource_host.h"
  28 #include "ppapi/proxy/ppapi_message_utils.h"
  29 #include "ppapi/proxy/ppapi_messages.h"
  30 #include "ppapi/proxy/serialized_structs.h"
  31 #include "ppapi/shared_impl/ppb_image_data_shared.h"
  32 #include "third_party/WebKit/public/platform/WebURL.h"
  33 #include "third_party/WebKit/public/web/WebDocument.h"
  34 #include "third_party/WebKit/public/web/WebElement.h"
  35 #include "third_party/WebKit/public/web/WebPluginContainer.h"
  36
  37 #if defined(OS_WIN)
  38 #include "base/command_line.h"
  39 #include "base/win/windows_version.h"
  40 #include "content/public/common/content_switches.h"
  41 #endif
  42
  43 using ppapi::host::ResourceHost;
  44 using ppapi::UnpackMessage;
  45
  46 namespace content {
  47
  48 namespace {
  49
  50 #if defined(ENABLE_WEBRTC)
  51 bool CanUseMediaStreamAPI(const RendererPpapiHost* host, PP_Instance instance) {
  52   blink::WebPluginContainer* container =
  53       host->GetContainerForInstance(instance);
  54   if (!container)
  55     return false;
  56
  57   GURL document_url = container->element().document().url();
  58   ContentRendererClient* content_renderer_client =
  59       GetContentClient()->renderer();
  60   return content_renderer_client->AllowPepperMediaStreamAPI(document_url);
  61 }
  62 #endif  // defined(ENABLE_WEBRTC)
  63
  64 bool CanUseCompositorAPI(const RendererPpapiHost* host, PP_Instance instance) {
  65   blink::WebPluginContainer* container =
  66       host->GetContainerForInstance(instance);
  67   if (!container)
  68     return false;
  69
  70   GURL document_url = container->element().document().url();
  71   ContentRendererClient* content_renderer_client =
  72       GetContentClient()->renderer();
  73   return content_renderer_client->IsPluginAllowedToUseCompositorAPI(
  74       document_url);
  75 }
  76
  77 bool CanUseVideoDecodeAPI(const RendererPpapiHost* host, PP_Instance instance) {
  78   blink::WebPluginContainer* container =
  79       host->GetContainerForInstance(instance);
  80   if (!container)
  81     return false;
  82
  83   GURL document_url = container->element().document().url();
  84   ContentRendererClient* content_renderer_client =
  85       GetContentClient()->renderer();
  86   return content_renderer_client->IsPluginAllowedToUseVideoDecodeAPI(
  87       document_url);
  88 }
  89
  90 }  // namespace
  91
  92 ContentRendererPepperHostFactory::ContentRendererPepperHostFactory(
  93     RendererPpapiHostImpl* host)
  94     : host_(host) {}
  95
  96 ContentRendererPepperHostFactory::~ContentRendererPepperHostFactory() {}
  97
  98 scoped_ptr<ResourceHost> ContentRendererPepperHostFactory::CreateResourceHost(
  99     ppapi::host::PpapiHost* host,
 100     PP_Resource resource,
 101     PP_Instance instance,
 102     const IPC::Message& message) {
 103   DCHECK(host == host_->GetPpapiHost());
 104
 105   // Make sure the plugin is giving us a valid instance for this resource.
 106   if (!host_->IsValidInstance(instance))
 107     return scoped_ptr<ResourceHost>();
 108
 109   PepperPluginInstanceImpl* instance_impl =
 110       host_->GetPluginInstanceImpl(instance);
 111   if (!instance_impl->render_frame())
 112     return scoped_ptr<ResourceHost>();
 113
 114   // Public interfaces.
 115   switch (message.type()) {
 116     case PpapiHostMsg_Compositor_Create::ID: {
 117       if (!CanUseCompositorAPI(host_, instance))
 118         return scoped_ptr<ResourceHost>();
 119       return scoped_ptr<ResourceHost>(
 120           new PepperCompositorHost(host_, instance, resource));
 121     }
 122     case PpapiHostMsg_FileRef_CreateForFileAPI::ID: {
 123       PP_Resource file_system;
 124       std::string internal_path;
 125       if (!UnpackMessage<PpapiHostMsg_FileRef_CreateForFileAPI>(
 126               message, &file_system, &internal_path)) {
 127         NOTREACHED();
 128         return scoped_ptr<ResourceHost>();
 129       }
 130       return scoped_ptr<ResourceHost>(new PepperFileRefRendererHost(
 131           host_, instance, resource, file_system, internal_path));
 132     }
 133     case PpapiHostMsg_FileSystem_Create::ID: {
 134       PP_FileSystemType file_system_type;
 135       if (!UnpackMessage<PpapiHostMsg_FileSystem_Create>(message,
 136                                                          &file_system_type)) {
 137         NOTREACHED();
 138         return scoped_ptr<ResourceHost>();
 139       }
 140       return scoped_ptr<ResourceHost>(new PepperFileSystemHost(
 141           host_, instance, resource, file_system_type));
 142     }
 143     case PpapiHostMsg_Graphics2D_Create::ID: {
 144       PP_Size size;
 145       PP_Bool is_always_opaque;
 146       if (!UnpackMessage<PpapiHostMsg_Graphics2D_Create>(
 147               message, &size, &is_always_opaque)) {
 148         NOTREACHED();
 149         return scoped_ptr<ResourceHost>();
 150       }
 151       ppapi::PPB_ImageData_Shared::ImageDataType image_type =
 152           ppapi::PPB_ImageData_Shared::PLATFORM;
 153 #if defined(OS_WIN)
 154       // If Win32K lockdown mitigations are enabled for Windows 8 and beyond
 155       // we use the SIMPLE image data type as the PLATFORM image data type
 156       // calls GDI functions to create DIB sections etc which fail in Win32K
 157       // lockdown mode.
 158       // TODO(ananta)
 159       // Look into whether this causes a loss of functionality. From cursory
 160       // testing things seem to work well.
 161       if (CommandLine::ForCurrentProcess()->HasSwitch(
 162               switches::kEnableWin32kRendererLockDown) &&
 163           base::win::GetVersion() >= base::win::VERSION_WIN8) {
 164         image_type = ppapi::PPB_ImageData_Shared::SIMPLE;
 165       }
 166 #endif
 167       scoped_refptr<PPB_ImageData_Impl> image_data(new PPB_ImageData_Impl(
 168           instance, image_type));
 169       return scoped_ptr<ResourceHost>(PepperGraphics2DHost::Create(
 170           host_, instance, resource, size, is_always_opaque, image_data));
 171     }
 172     case PpapiHostMsg_URLLoader_Create::ID:
 173       return scoped_ptr<ResourceHost>(
 174           new PepperURLLoaderHost(host_, false, instance, resource));
 175     case PpapiHostMsg_VideoDecoder_Create::ID: {
 176       if (!CanUseVideoDecodeAPI(host_, instance))
 177         return scoped_ptr<ResourceHost>();
 178       return scoped_ptr<ResourceHost>(
 179           new PepperVideoDecoderHost(host_, instance, resource));
 180     }
 181     case PpapiHostMsg_WebSocket_Create::ID:
 182       return scoped_ptr<ResourceHost>(
 183           new PepperWebSocketHost(host_, instance, resource));
 184 #if defined(ENABLE_WEBRTC)
 185     case PpapiHostMsg_MediaStreamVideoTrack_Create::ID:
 186       return scoped_ptr<ResourceHost>(
 187           new PepperMediaStreamVideoTrackHost(host_, instance, resource));
 188     // These private MediaStream interfaces are exposed as if they were public
 189     // so they can be used by NaCl plugins. However, they are available only
 190     // for whitelisted apps.
 191     case PpapiHostMsg_VideoDestination_Create::ID:
 192       if (CanUseMediaStreamAPI(host_, instance))
 193         return scoped_ptr<ResourceHost>(
 194             new PepperVideoDestinationHost(host_, instance, resource));
 195     case PpapiHostMsg_VideoSource_Create::ID:
 196       if (CanUseMediaStreamAPI(host_, instance))
 197         return scoped_ptr<ResourceHost>(
 198             new PepperVideoSourceHost(host_, instance, resource));
 199 #endif  // defined(ENABLE_WEBRTC)
 200   }
 201
 202   // Dev interfaces.
 203   if (GetPermissions().HasPermission(ppapi::PERMISSION_DEV)) {
 204     switch (message.type()) {
 205       case PpapiHostMsg_AudioInput_Create::ID:
 206         return scoped_ptr<ResourceHost>(
 207             new PepperAudioInputHost(host_, instance, resource));
 208       case PpapiHostMsg_FileChooser_Create::ID:
 209         return scoped_ptr<ResourceHost>(
 210             new PepperFileChooserHost(host_, instance, resource));
 211       case PpapiHostMsg_VideoCapture_Create::ID: {
 212         PepperVideoCaptureHost* host =
 213             new PepperVideoCaptureHost(host_, instance, resource);
 214         if (!host->Init()) {
 215           delete host;
 216           return scoped_ptr<ResourceHost>();
 217         }
 218         return scoped_ptr<ResourceHost>(host);
 219       }
 220     }
 221   }
 222
 223   return scoped_ptr<ResourceHost>();
 224 }
 225
 226 const ppapi::PpapiPermissions&
 227 ContentRendererPepperHostFactory::GetPermissions() const {
 228   return host_->GetPpapiHost()->permissions();
 229 }
 230
 231 }  // namespace content