src/extensions/browser/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 "extensions/browser/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 "content/public/browser/browser_thread.h"
  12 #include "content/public/browser/utility_process_host.h"
  13 #include "content/public/common/content_switches.h"
  14 #include "extensions/common/extension_utility_messages.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), fetch_data_(fetch_data), update_callback_(update_callback) {
  25   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  26 }
  27
  28 void SafeManifestParser::Start() {
  29   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  30   if (!BrowserThread::PostTask(
  31           BrowserThread::IO,
  32           FROM_HERE,
  33           base::Bind(&SafeManifestParser::ParseInSandbox, this))) {
  34     NOTREACHED();
  35   }
  36 }
  37
  38 SafeManifestParser::~SafeManifestParser() {
  39   // If we're using UtilityProcessHost, we may not be destroyed on
  40   // the UI or IO thread.
  41 }
  42
  43 void SafeManifestParser::ParseInSandbox() {
  44   DCHECK_CURRENTLY_ON(BrowserThread::IO);
  45
  46   content::UtilityProcessHost* host = content::UtilityProcessHost::Create(
  47       this,
  48       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI).get());
  49   host->Send(new ExtensionUtilityMsg_ParseUpdateManifest(xml_));
  50 }
  51
  52 bool SafeManifestParser::OnMessageReceived(const IPC::Message& message) {
  53   bool handled = true;
  54   IPC_BEGIN_MESSAGE_MAP(SafeManifestParser, message)
  55     IPC_MESSAGE_HANDLER(ExtensionUtilityHostMsg_ParseUpdateManifest_Succeeded,
  56                         OnParseUpdateManifestSucceeded)
  57     IPC_MESSAGE_HANDLER(ExtensionUtilityHostMsg_ParseUpdateManifest_Failed,
  58                         OnParseUpdateManifestFailed)
  59     IPC_MESSAGE_UNHANDLED(handled = false)
  60   IPC_END_MESSAGE_MAP()
  61   return handled;
  62 }
  63
  64 void SafeManifestParser::OnParseUpdateManifestSucceeded(
  65     const UpdateManifest::Results& results) {
  66   VLOG(2) << "parsing manifest succeeded (" << fetch_data_->full_url() << ")";
  67   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  68   update_callback_.Run(*fetch_data_, &results);
  69 }
  70
  71 void SafeManifestParser::OnParseUpdateManifestFailed(
  72     const std::string& error_message) {
  73   VLOG(2) << "parsing manifest failed (" << fetch_data_->full_url() << ")";
  74   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  75   LOG(WARNING) << "Error parsing update manifest:\n" << error_message;
  76   update_callback_.Run(*fetch_data_, NULL);
  77 }
  78
  79 }  // namespace extensions