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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/installer/util/google_update_util.h"
#include <string>
#include "base/command_line.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/logging.h"
#include "base/process/launch.h"
#include "base/time/time.h"
#include "base/win/win_util.h"
#include "chrome/installer/util/google_update_settings.h"
#include "chrome/installer/util/install_util.h"
#include "chrome/installer/util/installation_state.h"
namespace google_update {
namespace {
const int kGoogleUpdateTimeoutMs = 20 * 1000;
// Launches command |cmd_string|, and waits for |timeout| milliseconds before
// timing out. To wait indefinitely, one can set
// |timeout| to be base::TimeDelta::Max().
// Returns true if this executes successfully.
// Returns false if command execution fails to execute, or times out.
bool LaunchProcessAndWaitWithTimeout(const std::wstring& cmd_string,
base::TimeDelta timeout) {
bool success = false;
int exit_code = 0;
VLOG(0) << "Launching: " << cmd_string;
base::Process process =
base::LaunchProcess(cmd_string, base::LaunchOptions());
if (!process.IsValid()) {
PLOG(ERROR) << "Failed to launch (" << cmd_string << ")";
} else if (!process.WaitForExitWithTimeout(timeout, &exit_code)) {
// The GetExitCodeProcess failed or timed-out.
LOG(ERROR) << "Command (" << cmd_string << ") is taking more than "
<< timeout.InMilliseconds() << " milliseconds to complete.";
} else if (exit_code != 0) {
LOG(ERROR) << "Command (" << cmd_string << ") exited with code "
<< exit_code;
} else {
success = true;
}
return success;
}
} // namespace
bool UninstallGoogleUpdate(bool system_install) {
bool success = false;
std::wstring cmd_string(
GoogleUpdateSettings::GetUninstallCommandLine(system_install));
if (cmd_string.empty()) {
success = true; // Nothing to; vacuous success.
} else {
success = LaunchProcessAndWaitWithTimeout(
cmd_string, base::Milliseconds(kGoogleUpdateTimeoutMs));
}
return success;
}
void ElevateIfNeededToReenableUpdates() {
installer::ProductState product_state;
const bool system_install = !InstallUtil::IsPerUserInstall();
if (!product_state.Initialize(system_install))
return;
base::FilePath exe_path(product_state.GetSetupPath());
if (exe_path.empty() || !base::PathExists(exe_path)) {
LOG(ERROR) << "Could not find setup.exe to reenable updates.";
return;
}
base::CommandLine cmd(exe_path);
cmd.AppendSwitch(installer::switches::kReenableAutoupdates);
InstallUtil::AppendModeAndChannelSwitches(&cmd);
if (system_install)
cmd.AppendSwitch(installer::switches::kSystemLevel);
if (product_state.uninstall_command().HasSwitch(
installer::switches::kVerboseLogging)) {
cmd.AppendSwitch(installer::switches::kVerboseLogging);
}
base::LaunchOptions launch_options;
launch_options.force_breakaway_from_job_ = true;
launch_options.elevated = base::win::UserAccountControlIsEnabled();
base::LaunchProcess(cmd, launch_options);
}
} // namespace google_update
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