src/chrome/browser/extensions/updater/safe_manifest_parser.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/extensions/updater/safe_manifest_parser.h"
   6
   7 #include "base/bind.h"
   8 #include "base/command_line.h"
   9 #include "base/location.h"
  10 #include "base/logging.h"
  11 #include "chrome/common/chrome_utility_messages.h"
  12 #include "content/public/browser/browser_thread.h"
  13 #include "content/public/browser/utility_process_host.h"
  14 #include "content/public/common/content_switches.h"
  15 #include "ipc/ipc_message_macros.h"
  16
  17 using content::BrowserThread;
  18
  19 namespace extensions {
  20
  21 SafeManifestParser::SafeManifestParser(const std::string& xml,
  22                                        ManifestFetchData* fetch_data,
  23                                        const UpdateCallback& update_callback)
  24     : xml_(xml),
  25       fetch_data_(fetch_data),
  26       update_callback_(update_callback) {
  27   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  28 }
  29
  30 void SafeManifestParser::Start() {
  31   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  32   if (!BrowserThread::PostTask(
  33           BrowserThread::IO, FROM_HERE,
  34           base::Bind(&SafeManifestParser::ParseInSandbox, this))) {
  35     NOTREACHED();
  36   }
  37 }
  38
  39 SafeManifestParser::~SafeManifestParser() {
  40   // If we're using UtilityProcessHost, we may not be destroyed on
  41   // the UI or IO thread.
  42 }
  43
  44 void SafeManifestParser::ParseInSandbox() {
  45   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
  46
  47   content::UtilityProcessHost* host = content::UtilityProcessHost::Create(
  48       this,
  49       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI).get());
  50   host->EnableZygote();
  51   host->Send(new ChromeUtilityMsg_ParseUpdateManifest(xml_));
  52 }
  53
  54 bool SafeManifestParser::OnMessageReceived(const IPC::Message& message) {
  55   bool handled = true;
  56   IPC_BEGIN_MESSAGE_MAP(SafeManifestParser, message)
  57     IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_ParseUpdateManifest_Succeeded,
  58                         OnParseUpdateManifestSucceeded)
  59     IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_ParseUpdateManifest_Failed,
  60                         OnParseUpdateManifestFailed)
  61     IPC_MESSAGE_UNHANDLED(handled = false)
  62   IPC_END_MESSAGE_MAP()
  63   return handled;
  64 }
  65
  66 void SafeManifestParser::OnParseUpdateManifestSucceeded(
  67     const UpdateManifest::Results& results) {
  68   VLOG(2) << "parsing manifest succeeded (" << fetch_data_->full_url() << ")";
  69   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  70   update_callback_.Run(*fetch_data_, &results);
  71 }
  72
  73 void SafeManifestParser::OnParseUpdateManifestFailed(
  74     const std::string& error_message) {
  75   VLOG(2) << "parsing manifest failed (" << fetch_data_->full_url() << ")";
  76   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  77   LOG(WARNING) << "Error parsing update manifest:\n" << error_message;
  78   update_callback_.Run(*fetch_data_, NULL);
  79 }
  80
  81 }  // namespace extensions