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// Copyright (c) 2006-2008 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.
//
// This file defines the methods useful for uninstalling Chrome.
#include "chrome/installer/setup/uninstall.h"
#include <atlbase.h>
#include <windows.h>
#include <msi.h>
#include "base/file_util.h"
#include "base/path_service.h"
#include "base/registry.h"
#include "base/scoped_ptr.h"
#include "base/string_util.h"
#include "base/win_util.h"
#include "base/wmi_util.h"
#include "chrome/app/result_codes.h"
#include "chrome/common/chrome_constants.h"
#include "chrome/installer/setup/setup.h"
#include "chrome/installer/setup/setup_constants.h"
#include "chrome/installer/util/browser_distribution.h"
#include "chrome/installer/util/helper.h"
#include "chrome/installer/util/install_util.h"
#include "chrome/installer/util/l10n_string_util.h"
#include "chrome/installer/util/logging_installer.h"
#include "chrome/installer/util/google_update_constants.h"
#include "chrome/installer/util/google_update_settings.h"
#include "chrome/installer/util/shell_util.h"
#include "chrome/installer/util/util_constants.h"
#include "chrome/installer/util/version.h"
#include "installer_util_strings.h"
namespace {
// This method deletes Chrome shortcut folder from Windows Start menu. It
// checks system_uninstall to see if the shortcut is in all users start menu
// or current user start menu.
void DeleteChromeShortcut(bool system_uninstall) {
std::wstring shortcut_path;
if (system_uninstall) {
PathService::Get(base::DIR_COMMON_START_MENU, &shortcut_path);
} else {
PathService::Get(base::DIR_START_MENU, &shortcut_path);
}
if (shortcut_path.empty()) {
LOG(ERROR) << "Failed to get location for shortcut.";
} else {
BrowserDistribution* dist = BrowserDistribution::GetDistribution();
file_util::AppendToPath(&shortcut_path, dist->GetApplicationName());
LOG(INFO) << "Deleting shortcut " << shortcut_path;
if (!file_util::Delete(shortcut_path, true))
LOG(ERROR) << "Failed to delete folder: " << shortcut_path;
}
}
// This method tries to delete a registry key and logs an error message
// in case of failure. It returns true if deletion is successful,
// otherwise false.
bool DeleteRegistryKey(RegKey& key, const std::wstring& key_path) {
LOG(INFO) << "Deleting registry key " << key_path;
if (!key.DeleteKey(key_path.c_str())) {
LOG(ERROR) << "Failed to delete registry key: " << key_path;
return false;
}
return true;
}
// This method tries to delete a registry value and logs an error message
// in case of failure. It returns true if deletion is successful,
// otherwise false.
bool DeleteRegistryValue(HKEY reg_root, const std::wstring& key_path,
const std::wstring& value_name) {
RegKey key(reg_root, key_path.c_str(), KEY_ALL_ACCESS);
LOG(INFO) << "Deleting registry value " << value_name;
if (!key.DeleteValue(value_name.c_str())) {
LOG(ERROR) << "Failed to delete registry value: " << value_name;
return false;
}
return true;
}
// This method checks if Chrome is currently running or if the user has
// cancelled the uninstall operation by clicking Cancel on the confirmation
// box that Chrome pops up.
installer_util::InstallStatus IsChromeActiveOrUserCancelled(
bool system_uninstall) {
static const std::wstring kCmdLineOptions(L" --uninstall");
int32 exit_code = ResultCodes::NORMAL_EXIT;
// Here we want to save user from frustration (in case of Chrome crashes)
// and continue with the uninstallation as long as chrome.exe process exit
// code is NOT one of the following:
// - UNINSTALL_CHROME_ALIVE - chrome.exe is currently running
// - UNINSTALL_USER_CANCEL - User cancelled uninstallation
// - HUNG - chrome.exe was killed by HuntForZombieProcesses() (until we can
// give this method some brains and not kill chrome.exe launched
// by us, we will not uninstall if we get this return code).
LOG(INFO) << "Launching Chrome to do uninstall tasks.";
if (installer::LaunchChromeAndWaitForResult(system_uninstall,
kCmdLineOptions,
&exit_code)) {
LOG(INFO) << "chrome.exe launched for uninstall confirmation returned: "
<< exit_code;
if ((exit_code == ResultCodes::UNINSTALL_CHROME_ALIVE) ||
(exit_code == ResultCodes::UNINSTALL_USER_CANCEL) ||
(exit_code == ResultCodes::HUNG))
return installer_util::UNINSTALL_CANCELLED;
} else {
LOG(ERROR) << "Failed to launch chrome.exe for uninstall confirmation.";
}
return installer_util::UNINSTALL_CONFIRMED;
}
} // namespace
installer_util::InstallStatus installer_setup::UninstallChrome(
const std::wstring& exe_path, bool system_uninstall,
const installer::Version& installed_version, bool remove_all) {
installer_util::InstallStatus status =
IsChromeActiveOrUserCancelled(system_uninstall);
if (status != installer_util::UNINSTALL_CONFIRMED)
return status;
BrowserDistribution* dist = BrowserDistribution::GetDistribution();
dist->DoPreUninstallOperations();
#if defined(GOOGLE_CHROME_BUILD)
// TODO(rahulk): This should be done by DoPreUninstallOperations call above
wchar_t product[39]; // GUID + '\0'
MsiSetInternalUI(INSTALLUILEVEL_NONE, NULL); // Don't show any UI to user.
for (int i = 0; MsiEnumRelatedProducts(google_update::kGearsUpgradeCode, 0, i,
product) != ERROR_NO_MORE_ITEMS; ++i) {
LOG(INFO) << "Uninstalling Gears - " << product;
unsigned int ret = MsiConfigureProduct(product, INSTALLLEVEL_MAXIMUM,
INSTALLSTATE_ABSENT);
if (ret != ERROR_SUCCESS)
LOG(ERROR) << "Failed to uninstall Gears " << product << ": " << ret;
}
#endif
// Chrome is not in use so lets uninstall Chrome by deleting various files
// and registry entries. Here we will just make best effort and keep going
// in case of errors.
// First delete shortcut from Start->Programs.
DeleteChromeShortcut(system_uninstall);
// Delete the registry keys (Uninstall key and Version key).
HKEY reg_root = system_uninstall ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER;
RegKey key(reg_root, L"", KEY_ALL_ACCESS);
DeleteRegistryKey(key, dist->GetUninstallRegPath());
DeleteRegistryKey(key, dist->GetVersionKey());
// Delete Software\Classes\ChromeHTML,
// Software\Clients\StartMenuInternet\chrome.exe and
// Software\RegisteredApplications\Chrome
std::wstring html_prog_id(ShellUtil::kRegClasses);
file_util::AppendToPath(&html_prog_id, ShellUtil::kChromeHTMLProgId);
DeleteRegistryKey(key, html_prog_id);
std::wstring set_access_key(ShellUtil::kRegStartMenuInternet);
file_util::AppendToPath(&set_access_key, installer_util::kChromeExe);
DeleteRegistryKey(key, set_access_key);
DeleteRegistryValue(reg_root, ShellUtil::kRegRegisteredApplications,
dist->GetApplicationName());
key.Close();
// Delete shared registry keys as well (these require admin rights) if
// remove_all option is specified.
if (remove_all) {
RegKey hklm_key(HKEY_LOCAL_MACHINE, L"", KEY_ALL_ACCESS);
DeleteRegistryKey(hklm_key, set_access_key);
DeleteRegistryKey(hklm_key, html_prog_id);
DeleteRegistryValue(HKEY_LOCAL_MACHINE,
ShellUtil::kRegRegisteredApplications,
dist->GetApplicationName());
// Delete media player registry key that exists only in HKLM.
std::wstring reg_path(installer::kMediaPlayerRegPath);
file_util::AppendToPath(®_path, installer_util::kChromeExe);
DeleteRegistryKey(hklm_key, reg_path);
hklm_key.Close();
}
// Finally delete all the files from Chrome folder after moving setup.exe
// to a temp location.
std::wstring install_path(installer::GetChromeInstallPath(system_uninstall));
if (install_path.empty()) {
LOG(ERROR) << "Could not get installation destination path.";
// Nothing else we could do for uninstall, so we return.
return installer_util::UNINSTALL_FAILED;
} else {
LOG(INFO) << "install destination path: " << install_path;
}
std::wstring setup_exe(installer::GetInstallerPathUnderChrome(
install_path, installed_version.GetString()));
file_util::AppendToPath(&setup_exe, file_util::GetFilenameFromPath(exe_path));
std::wstring temp_file;
file_util::CreateTemporaryFileName(&temp_file);
file_util::Move(setup_exe, temp_file);
LOG(INFO) << "Deleting install path " << install_path;
if (!file_util::Delete(install_path, true))
LOG(ERROR) << "Failed to delete folder: " << install_path;
LOG(INFO) << "Uninstallation complete. Launching Uninstall survey.";
dist->DoPostUninstallOperations(installed_version);
return installer_util::UNINSTALL_SUCCESSFUL;
}
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