src/chrome/browser/renderer_host/pepper/pepper_broker_message_filter.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/pepper_broker_message_filter.h"
   6
   7 #include <string>
   8
   9 #include "chrome/browser/content_settings/host_content_settings_map.h"
  10 #include "chrome/browser/profiles/profile.h"
  11 #include "chrome/common/content_settings.h"
  12 #include "content/public/browser/browser_ppapi_host.h"
  13 #include "content/public/browser/browser_thread.h"
  14 #include "content/public/browser/render_process_host.h"
  15 #include "ipc/ipc_message_macros.h"
  16 #include "ppapi/c/pp_errors.h"
  17 #include "ppapi/host/dispatch_host_message.h"
  18 #include "ppapi/proxy/ppapi_messages.h"
  19 #include "url/gurl.h"
  20
  21 using content::BrowserPpapiHost;
  22 using content::BrowserThread;
  23 using content::RenderProcessHost;
  24
  25 namespace chrome {
  26
  27 PepperBrokerMessageFilter::PepperBrokerMessageFilter(
  28     PP_Instance instance,
  29     BrowserPpapiHost* host)
  30     : document_url_(host->GetDocumentURLForInstance(instance)) {
  31   int unused;
  32   host->GetRenderViewIDsForInstance(instance, &render_process_id_, &unused);
  33 }
  34
  35 PepperBrokerMessageFilter::~PepperBrokerMessageFilter() {
  36 }
  37
  38 scoped_refptr<base::TaskRunner>
  39 PepperBrokerMessageFilter::OverrideTaskRunnerForMessage(
  40     const IPC::Message& message) {
  41   return BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI);
  42 }
  43
  44 int32_t PepperBrokerMessageFilter::OnResourceMessageReceived(
  45     const IPC::Message& msg,
  46     ppapi::host::HostMessageContext* context) {
  47   IPC_BEGIN_MESSAGE_MAP(PepperBrokerMessageFilter, msg)
  48     PPAPI_DISPATCH_HOST_RESOURCE_CALL_0(PpapiHostMsg_Broker_IsAllowed,
  49                                         OnIsAllowed)
  50   IPC_END_MESSAGE_MAP()
  51   return PP_ERROR_FAILED;
  52 }
  53
  54 int32_t PepperBrokerMessageFilter::OnIsAllowed(
  55     ppapi::host::HostMessageContext* context) {
  56   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  57   if (!document_url_.is_valid())
  58     return PP_ERROR_FAILED;
  59   RenderProcessHost* render_process_host =
  60       RenderProcessHost::FromID(render_process_id_);
  61   if (!render_process_host)
  62     return PP_ERROR_FAILED;
  63   Profile* profile =
  64       Profile::FromBrowserContext(render_process_host->GetBrowserContext());
  65   HostContentSettingsMap* content_settings =
  66       profile->GetHostContentSettingsMap();
  67   ContentSetting setting =
  68       content_settings->GetContentSetting(document_url_, document_url_,
  69                                           CONTENT_SETTINGS_TYPE_PPAPI_BROKER,
  70                                           std::string());
  71   if (setting == CONTENT_SETTING_ALLOW)
  72     return PP_OK;
  73   return PP_ERROR_FAILED;
  74 }
  75
  76 }  // namespace chrome