src/chrome/renderer/extensions/chrome_extension_helper.cc

   1 // Copyright 2014 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/renderer/extensions/chrome_extension_helper.h"
   6
   7 #include "base/strings/string16.h"
   8 #include "chrome/common/extensions/chrome_extension_messages.h"
   9 #include "chrome/renderer/web_apps.h"
  10 #include "content/public/renderer/render_view.h"
  11 #include "ipc/ipc_message_macros.h"
  12 #include "third_party/WebKit/public/web/WebView.h"
  13 #include "url/gurl.h"
  14 #include "url/url_constants.h"
  15
  16 namespace extensions {
  17
  18 ChromeExtensionHelper::ChromeExtensionHelper(content::RenderView* render_view)
  19     : content::RenderViewObserver(render_view),
  20       content::RenderViewObserverTracker<ChromeExtensionHelper>(render_view) {
  21 }
  22
  23 ChromeExtensionHelper::~ChromeExtensionHelper() {
  24 }
  25
  26 bool ChromeExtensionHelper::OnMessageReceived(
  27     const IPC::Message& message) {
  28   bool handled = true;
  29   IPC_BEGIN_MESSAGE_MAP(ChromeExtensionHelper, message)
  30     IPC_MESSAGE_HANDLER(ChromeExtensionMsg_GetApplicationInfo,
  31                         OnGetApplicationInfo)
  32     IPC_MESSAGE_UNHANDLED(handled = false)
  33   IPC_END_MESSAGE_MAP()
  34   return handled;
  35 }
  36
  37 void ChromeExtensionHelper::OnGetApplicationInfo() {
  38   WebApplicationInfo app_info;
  39   base::string16 error;
  40   web_apps::ParseWebAppFromWebDocument(
  41       render_view()->GetWebView()->mainFrame(), &app_info, &error);
  42
  43   // Prune out any data URLs in the set of icons.  The browser process expects
  44   // any icon with a data URL to have originated from a favicon.  We don't want
  45   // to decode arbitrary data URLs in the browser process.  See
  46   // http://b/issue?id=1162972
  47   for (size_t i = 0; i < app_info.icons.size(); ++i) {
  48     if (app_info.icons[i].url.SchemeIs(url::kDataScheme)) {
  49       app_info.icons.erase(app_info.icons.begin() + i);
  50       --i;
  51     }
  52   }
  53
  54   Send(
  55       new ChromeExtensionHostMsg_DidGetApplicationInfo(routing_id(), app_info));
  56 }
  57
  58 }  // namespace extensions