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_file_chooser_host.h"
  13 #include "content/renderer/pepper/pepper_file_ref_renderer_host.h"
  14 #include "content/renderer/pepper/pepper_file_system_host.h"
  15 #include "content/renderer/pepper/pepper_graphics_2d_host.h"
  16 #include "content/renderer/pepper/pepper_media_stream_video_track_host.h"
  17 #include "content/renderer/pepper/pepper_plugin_instance_impl.h"
  18 #include "content/renderer/pepper/pepper_truetype_font_host.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 using ppapi::host::ResourceHost;
  38 using ppapi::proxy::SerializedTrueTypeFontDesc;
  39 using ppapi::UnpackMessage;
  40
  41 namespace content {
  42
  43 #if defined(ENABLE_WEBRTC)
  44 namespace {
  45
  46 bool CanUseMediaStreamAPI(const RendererPpapiHost* host, PP_Instance instance) {
  47   blink::WebPluginContainer* container =
  48       host->GetContainerForInstance(instance);
  49   if (!container)
  50     return false;
  51
  52   GURL document_url = container->element().document().url();
  53   ContentRendererClient* content_renderer_client =
  54       GetContentClient()->renderer();
  55   return content_renderer_client->AllowPepperMediaStreamAPI(document_url);
  56 }
  57
  58 }  // namespace
  59 #endif  // defined(ENABLE_WEBRTC)
  60
  61 ContentRendererPepperHostFactory::ContentRendererPepperHostFactory(
  62     RendererPpapiHostImpl* host)
  63     : host_(host) {}
  64
  65 ContentRendererPepperHostFactory::~ContentRendererPepperHostFactory() {}
  66
  67 scoped_ptr<ResourceHost> ContentRendererPepperHostFactory::CreateResourceHost(
  68     ppapi::host::PpapiHost* host,
  69     const ppapi::proxy::ResourceMessageCallParams& params,
  70     PP_Instance instance,
  71     const IPC::Message& message) {
  72   DCHECK(host == host_->GetPpapiHost());
  73
  74   // Make sure the plugin is giving us a valid instance for this resource.
  75   if (!host_->IsValidInstance(instance))
  76     return scoped_ptr<ResourceHost>();
  77
  78   PepperPluginInstanceImpl* instance_impl =
  79       host_->GetPluginInstanceImpl(instance);
  80   if (!instance_impl->render_frame())
  81     return scoped_ptr<ResourceHost>();
  82
  83   // Public interfaces.
  84   switch (message.type()) {
  85     case PpapiHostMsg_FileRef_CreateForFileAPI::ID: {
  86       PP_Resource file_system;
  87       std::string internal_path;
  88       if (!UnpackMessage<PpapiHostMsg_FileRef_CreateForFileAPI>(
  89               message, &file_system, &internal_path)) {
  90         NOTREACHED();
  91         return scoped_ptr<ResourceHost>();
  92       }
  93       return scoped_ptr<ResourceHost>(new PepperFileRefRendererHost(
  94           host_, instance, params.pp_resource(), file_system, internal_path));
  95     }
  96     case PpapiHostMsg_FileSystem_Create::ID: {
  97       PP_FileSystemType file_system_type;
  98       if (!UnpackMessage<PpapiHostMsg_FileSystem_Create>(message,
  99                                                          &file_system_type)) {
 100         NOTREACHED();
 101         return scoped_ptr<ResourceHost>();
 102       }
 103       return scoped_ptr<ResourceHost>(new PepperFileSystemHost(
 104           host_, instance, params.pp_resource(), file_system_type));
 105     }
 106     case PpapiHostMsg_Graphics2D_Create::ID: {
 107       PP_Size size;
 108       PP_Bool is_always_opaque;
 109       if (!UnpackMessage<PpapiHostMsg_Graphics2D_Create>(
 110               message, &size, &is_always_opaque)) {
 111         NOTREACHED();
 112         return scoped_ptr<ResourceHost>();
 113       }
 114       scoped_refptr<PPB_ImageData_Impl> image_data(new PPB_ImageData_Impl(
 115           instance, ppapi::PPB_ImageData_Shared::PLATFORM));
 116       return scoped_ptr<ResourceHost>(
 117           PepperGraphics2DHost::Create(host_,
 118                                        instance,
 119                                        params.pp_resource(),
 120                                        size,
 121                                        is_always_opaque,
 122                                        image_data));
 123     }
 124     case PpapiHostMsg_URLLoader_Create::ID:
 125       return scoped_ptr<ResourceHost>(new PepperURLLoaderHost(
 126           host_, false, instance, params.pp_resource()));
 127     case PpapiHostMsg_VideoDecoder_Create::ID:
 128       return scoped_ptr<ResourceHost>(
 129           new PepperVideoDecoderHost(host_, instance, params.pp_resource()));
 130     case PpapiHostMsg_WebSocket_Create::ID:
 131       return scoped_ptr<ResourceHost>(
 132           new PepperWebSocketHost(host_, instance, params.pp_resource()));
 133 #if defined(ENABLE_WEBRTC)
 134     case PpapiHostMsg_MediaStreamVideoTrack_Create::ID:
 135       return scoped_ptr<ResourceHost>(new PepperMediaStreamVideoTrackHost(
 136           host_, instance, params.pp_resource()));
 137     // These private MediaStream interfaces are exposed as if they were public
 138     // so they can be used by NaCl plugins. However, they are available only
 139     // for whitelisted apps.
 140     case PpapiHostMsg_VideoDestination_Create::ID:
 141       if (CanUseMediaStreamAPI(host_, instance))
 142         return scoped_ptr<ResourceHost>(new PepperVideoDestinationHost(
 143             host_, instance, params.pp_resource()));
 144     case PpapiHostMsg_VideoSource_Create::ID:
 145       if (CanUseMediaStreamAPI(host_, instance))
 146         return scoped_ptr<ResourceHost>(
 147             new PepperVideoSourceHost(host_, instance, params.pp_resource()));
 148 #endif  // defined(ENABLE_WEBRTC)
 149   }
 150
 151   // Dev interfaces.
 152   if (GetPermissions().HasPermission(ppapi::PERMISSION_DEV)) {
 153     switch (message.type()) {
 154       case PpapiHostMsg_AudioInput_Create::ID:
 155         return scoped_ptr<ResourceHost>(
 156             new PepperAudioInputHost(host_, instance, params.pp_resource()));
 157       case PpapiHostMsg_FileChooser_Create::ID:
 158         return scoped_ptr<ResourceHost>(
 159             new PepperFileChooserHost(host_, instance, params.pp_resource()));
 160       case PpapiHostMsg_TrueTypeFont_Create::ID: {
 161         SerializedTrueTypeFontDesc desc;
 162         if (!UnpackMessage<PpapiHostMsg_TrueTypeFont_Create>(message, &desc)) {
 163           NOTREACHED();
 164           return scoped_ptr<ResourceHost>();
 165         }
 166         // Check that the family name is valid UTF-8 before passing it to the
 167         // host OS.
 168         if (base::IsStringUTF8(desc.family)) {
 169           return scoped_ptr<ResourceHost>(new PepperTrueTypeFontHost(
 170               host_, instance, params.pp_resource(), desc));
 171         }
 172         break;  // Drop through and return null host.
 173       }
 174       case PpapiHostMsg_VideoCapture_Create::ID: {
 175         PepperVideoCaptureHost* host =
 176             new PepperVideoCaptureHost(host_, instance, params.pp_resource());
 177         if (!host->Init()) {
 178           delete host;
 179           return scoped_ptr<ResourceHost>();
 180         }
 181         return scoped_ptr<ResourceHost>(host);
 182       }
 183     }
 184   }
 185
 186   return scoped_ptr<ResourceHost>();
 187 }
 188
 189 const ppapi::PpapiPermissions&
 190 ContentRendererPepperHostFactory::GetPermissions() const {
 191   return host_->GetPpapiHost()->permissions();
 192 }
 193
 194 }  // namespace content