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/profiles/profile.h"
  10 #include "components/content_settings/core/browser/host_content_settings_map.h"
  11 #include "components/content_settings/core/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(PP_Instance instance,
  28                                                      BrowserPpapiHost* host)
  29     : document_url_(host->GetDocumentURLForInstance(instance)) {
  30   int unused;
  31   host->GetRenderFrameIDsForInstance(instance, &render_process_id_, &unused);
  32 }
  33
  34 PepperBrokerMessageFilter::~PepperBrokerMessageFilter() {}
  35
  36 scoped_refptr<base::TaskRunner>
  37 PepperBrokerMessageFilter::OverrideTaskRunnerForMessage(
  38     const IPC::Message& message) {
  39   return BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI);
  40 }
  41
  42 int32_t PepperBrokerMessageFilter::OnResourceMessageReceived(
  43     const IPC::Message& msg,
  44     ppapi::host::HostMessageContext* context) {
  45   PPAPI_BEGIN_MESSAGE_MAP(PepperBrokerMessageFilter, msg)
  46     PPAPI_DISPATCH_HOST_RESOURCE_CALL_0(PpapiHostMsg_Broker_IsAllowed,
  47                                         OnIsAllowed)
  48   PPAPI_END_MESSAGE_MAP()
  49   return PP_ERROR_FAILED;
  50 }
  51
  52 int32_t PepperBrokerMessageFilter::OnIsAllowed(
  53     ppapi::host::HostMessageContext* context) {
  54   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  55   if (!document_url_.is_valid())
  56     return PP_ERROR_FAILED;
  57   RenderProcessHost* render_process_host =
  58       RenderProcessHost::FromID(render_process_id_);
  59   if (!render_process_host)
  60     return PP_ERROR_FAILED;
  61   Profile* profile =
  62       Profile::FromBrowserContext(render_process_host->GetBrowserContext());
  63   HostContentSettingsMap* content_settings =
  64       profile->GetHostContentSettingsMap();
  65   ContentSetting setting =
  66       content_settings->GetContentSetting(document_url_,
  67                                           document_url_,
  68                                           CONTENT_SETTINGS_TYPE_PPAPI_BROKER,
  69                                           std::string());
  70   if (setting == CONTENT_SETTING_ALLOW)
  71     return PP_OK;
  72   return PP_ERROR_FAILED;
  73 }
  74
  75 }  // namespace chrome