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 #include "grit/extensions_strings.h"
  17 #include "ui/base/l10n/l10n_util.h"
  18
  19 using content::BrowserThread;
  20
  21 namespace extensions {
  22
  23 SafeManifestParser::SafeManifestParser(const std::string& xml,
  24                                        const ResultsCallback& results_callback)
  25     : xml_(xml), results_callback_(results_callback) {
  26   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  27 }
  28
  29 void SafeManifestParser::Start() {
  30   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  31   if (!BrowserThread::PostTask(
  32           BrowserThread::IO,
  33           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_CURRENTLY_ON(BrowserThread::IO);
  46
  47   content::UtilityProcessHost* host = content::UtilityProcessHost::Create(
  48       this,
  49       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI).get());
  50   host->SetName(
  51       l10n_util::GetStringUTF16(IDS_UTILITY_PROCESS_MANIFEST_PARSER_NAME));
  52   host->Send(new ExtensionUtilityMsg_ParseUpdateManifest(xml_));
  53 }
  54
  55 bool SafeManifestParser::OnMessageReceived(const IPC::Message& message) {
  56   bool handled = true;
  57   IPC_BEGIN_MESSAGE_MAP(SafeManifestParser, message)
  58     IPC_MESSAGE_HANDLER(ExtensionUtilityHostMsg_ParseUpdateManifest_Succeeded,
  59                         OnParseUpdateManifestSucceeded)
  60     IPC_MESSAGE_HANDLER(ExtensionUtilityHostMsg_ParseUpdateManifest_Failed,
  61                         OnParseUpdateManifestFailed)
  62     IPC_MESSAGE_UNHANDLED(handled = false)
  63   IPC_END_MESSAGE_MAP()
  64   return handled;
  65 }
  66
  67 void SafeManifestParser::OnParseUpdateManifestSucceeded(
  68     const UpdateManifest::Results& results) {
  69   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  70   results_callback_.Run(&results);
  71 }
  72
  73 void SafeManifestParser::OnParseUpdateManifestFailed(
  74     const std::string& error_message) {
  75   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  76   LOG(WARNING) << "Error parsing update manifest:\n" << error_message;
  77   results_callback_.Run(NULL);
  78 }
  79
  80 }  // namespace extensions