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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// 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/google_update_settings.h"
#include "chrome/app/result_codes.h"
#include "chrome/common/chrome_constants.h"
#include "chrome/installer/setup/setup_constants.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/shell_util.h"
#include "chrome/installer/util/util_constants.h"
#include "chrome/installer/util/version.h"
#include "setup_resource.h"
#include "setup_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 {
file_util::AppendToPath(&shortcut_path,
installer_util::GetLocalizedString(IDS_PRODUCT_NAME_BASE));
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");
static const int32 kTimeOutMs = 30000;
int32 exit_code = ResultCodes::NORMAL_EXIT;
bool is_timeout = false;
// We want to continue with the uninstallation only when chrome.exe either
// returns NORMAL_EXIT (means Chrome is not running, user has confirmed
// uninstallation and sentinel file/desktop/ql shortcuts have been
// cleaned up) or UNINSTALL_DELETE_FILE_ERROR (means Chrome is not running,
// user has confirmed uninstallation but there was a problem with deleting
// sentinel file, desktop or ql shortcuts).
LOG(INFO) << "Launching Chrome to do uninstall tasks.";
if (installer::LaunchChromeAndWaitForResult(system_uninstall,
kCmdLineOptions,
kTimeOutMs,
&exit_code,
&is_timeout)) {
if (is_timeout || exit_code == ResultCodes::UNINSTALL_CHROME_ALIVE) {
LOG(INFO) << "Can't uninstall when chrome is still running";
return installer_util::CHROME_RUNNING;
} else if (exit_code == ResultCodes::UNINSTALL_USER_CANCEL) {
LOG(INFO) << "User cancelled uninstall operation";
return installer_util::UNINSTALL_CANCELLED;
} else if (exit_code == ResultCodes::NORMAL_EXIT) {
LOG(INFO) << "chrome.exe confirmed uninstallation from user.";
return installer_util::UNINSTALL_CONFIRMED;
} else if (exit_code == ResultCodes::UNINSTALL_DELETE_FILE_ERROR) {
LOG(ERROR) << "chrome.exe returned delete file error.";
return installer_util::UNINSTALL_CONFIRMED;
}
}
return installer_util::UNINSTALL_FAILED;
}
// Read the URL from the resource file and substitute the locale parameter
// with whatever Google Update tells us is the locale. In case we fail to find
// the locale, we use US English.
std::wstring GetUninstallSurveyUrl() {
const ATLSTRINGRESOURCEIMAGE* image = AtlGetStringResourceImage(
_AtlBaseModule.GetModuleInstance(), IDS_UNINSTALL_SURVEY_URL);
DCHECK(image);
std::wstring url = std::wstring(image->achString, image->nLength);
DCHECK(!url.empty());
std::wstring language;
if (!GoogleUpdateSettings::GetLanguage(&language))
language = L"en-US"; // Default to US English.
return ReplaceStringPlaceholders(url.c_str(), language.c_str(), NULL);
}
// This method launches an uninstall survey and is called at the end of
// uninstall process. We are not doing any error checking here as it is
// not critical to have this survey. If we fail to launch it, we just
// ignore it silently.
void LaunchUninstallSurvey(const installer::Version& installed_version) {
// Send the Chrome version and OS version as params to the form.
// It would be nice to send the locale, too, but I don't see an
// easy way to get that in the existing code. It's something we
// can add later, if needed.
// We depend on installed_version.GetString() not having spaces or other
// characters that need escaping: 0.2.13.4. Should that change, we will
// need to escape the string before using it in a URL.
const std::wstring kVersionParam = L"crversion";
const std::wstring kVersion = installed_version.GetString();
const std::wstring kOSParam = L"os";
std::wstring os_version = L"na";
OSVERSIONINFO version_info;
version_info.dwOSVersionInfoSize = sizeof version_info;
if (GetVersionEx(&version_info)) {
os_version = StringPrintf(L"%d.%d.%d",
version_info.dwMajorVersion,
version_info.dwMinorVersion,
version_info.dwBuildNumber);
}
std::wstring iexplore;
if (!PathService::Get(base::DIR_PROGRAM_FILES, &iexplore))
return;
file_util::AppendToPath(&iexplore, L"Internet Explorer");
file_util::AppendToPath(&iexplore, L"iexplore.exe");
std::wstring command = iexplore + L" " + GetUninstallSurveyUrl() + L"&" +
kVersionParam + L"=" + kVersion + L"&" + kOSParam + L"=" + os_version;
int pid = 0;
WMIProcessUtil::Launch(command, &pid);
}
// Uninstall Chrome specific Gears. First we find Gears MSI ProductId (that
// changes with every new version of Gears) using Gears MSI UpgradeCode (that
// does not change) and then uninstall Gears using API.
void UninstallGears() {
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;
}
}
} // 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;
// Uninstall Gears first.
UninstallGears();
// 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 Google Update update key).
HKEY reg_root = system_uninstall ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER;
RegKey key(reg_root, L"", KEY_ALL_ACCESS);
DeleteRegistryKey(key, installer_util::kUninstallRegPath);
DeleteRegistryKey(key, InstallUtil::GetChromeGoogleUpdateKey());
// 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,
installer_util::kApplicationName);
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,
installer_util::kApplicationName);
// 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(install_path);
file_util::AppendToPath(&setup_exe, installed_version.GetString());
file_util::AppendToPath(&setup_exe, installer::kInstallerDir);
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.";
LaunchUninstallSurvey(installed_version);
return installer_util::UNINSTALL_SUCCESSFUL;
}
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