| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "apps/app_host/update.h" |
| |
| #include <windows.h> |
| #include "base/command_line.h" |
| #include "base/file_version_info.h" |
| #include "base/logging.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/process/launch.h" |
| #include "base/strings/string16.h" |
| #include "base/strings/string_util.h" |
| #include "base/version.h" |
| #include "base/win/registry.h" |
| #include "chrome/installer/launcher_support/chrome_launcher_support.h" |
| |
| namespace app_host { |
| |
| namespace { |
| |
| // TODO(huangs) Refactor the constants: http://crbug.com/148538 |
| const wchar_t kGoogleRegClientsKey[] = L"Software\\Google\\Update\\Clients\\"; |
| |
| // Copied from util_constants.cc. |
| const char kMultiInstall[] = "multi-install"; |
| const char kChromeAppLauncher[] = "app-launcher"; |
| const char kVerboseLogging[] = "verbose-logging"; |
| |
| // Copied from google_update_constants.cc. |
| const wchar_t kRegVersionField[] = L"pv"; |
| |
| // Copied from chrome_appid.cc. |
| const wchar_t kBinariesAppGuid[] = L"{4DC8B4CA-1BDA-483e-B5FA-D3C12E15B62D}"; |
| |
| // Copied from google_chrome_distribution.cc. |
| const wchar_t kBrowserAppGuid[] = L"{8A69D345-D564-463c-AFF1-A69D9E530F96}"; |
| |
| // Fetches the version of the App Host, directly from the image's version |
| // resource. |
| Version GetAppHostVersion() { |
| scoped_ptr<FileVersionInfo> version_info( |
| FileVersionInfo::CreateFileVersionInfoForCurrentModule()); |
| Version app_host_version(WideToASCII(version_info->product_version())); |
| DCHECK(app_host_version.IsValid()); |
| return app_host_version; |
| } |
| |
| // Fetches the app version ("pv" entry) of a Google product from the |
| // system-level registry, given the app GUID ("{###...###}"). |
| Version GetAppVersionFromRegistry(const wchar_t* app_guid) { |
| HKEY root_key = HKEY_LOCAL_MACHINE; |
| string16 client_key(kGoogleRegClientsKey); |
| client_key.append(app_guid); |
| base::win::RegKey reg_key; |
| string16 version_str; |
| if ((reg_key.Open(root_key, client_key.c_str(), |
| KEY_QUERY_VALUE) == ERROR_SUCCESS) && |
| (reg_key.ReadValue(kRegVersionField, &version_str) == ERROR_SUCCESS)) { |
| return Version(WideToASCII(version_str)); |
| } |
| return Version(); |
| } |
| |
| // Calls setup.exe to update App Host, using the system-level setup.exe. |
| bool LaunchAppHostUpdate() { |
| // Get the path to the setup.exe. |
| base::FilePath setup_exe( |
| chrome_launcher_support::GetSetupExeForInstallationLevel( |
| chrome_launcher_support::SYSTEM_LEVEL_INSTALLATION)); |
| if (setup_exe.empty()) { |
| LOG(ERROR) << "Failed to find setup.exe"; |
| return false; |
| } |
| CommandLine cmd_line(setup_exe); |
| cmd_line.AppendSwitch(kMultiInstall); |
| cmd_line.AppendSwitch(kChromeAppLauncher); |
| cmd_line.AppendSwitch(kVerboseLogging); |
| LOG(INFO) << "Launching: " << cmd_line.GetCommandLineString(); |
| return base::LaunchProcess(cmd_line, base::LaunchOptions(), NULL); |
| } |
| |
| } // namespace |
| |
| void EnsureAppHostUpToDate() { |
| // Check version from Chrome Binaries first, then Chrome (all system-level). |
| Version new_version(GetAppVersionFromRegistry(kBinariesAppGuid)); |
| if (!new_version.IsValid()) |
| new_version = GetAppVersionFromRegistry(kBrowserAppGuid); |
| if (!new_version.IsValid()) |
| return; // Not an error: System-level Chrome might not be installed. |
| Version app_host_version(GetAppHostVersion()); |
| if (app_host_version.CompareTo(new_version) < 0) { |
| LOG(INFO) << "Updating App Launcher from " << app_host_version.GetString() |
| << " to " << new_version.GetString(); |
| if (!LaunchAppHostUpdate()) |
| LOG(ERROR) << "Failed to launch App Launcher update."; |
| } |
| } |
| |
| } // namespace app_host |