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// 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 "chrome/browser/chromeos/system/input_device_settings.h"
#include <stdarg.h>
#include <string>
#include <vector>
#include "base/bind.h"
#include "base/command_line.h"
#include "base/file_util.h"
#include "base/files/file_path.h"
#include "base/memory/ref_counted.h"
#include "base/message_loop/message_loop.h"
#include "base/process/kill.h"
#include "base/process/launch.h"
#include "base/process/process_handle.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/sys_info.h"
#include "base/task_runner.h"
#include "base/threading/sequenced_worker_pool.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/chromeos/policy/device_cloud_policy_manager_chromeos.h"
#include "chrome/browser/policy/browser_policy_connector.h"
#include "chrome/common/pref_names.h"
#include "chromeos/system/statistics_provider.h"
#include "content/public/browser/browser_thread.h"
namespace chromeos {
namespace system {
namespace {
const char kTpControl[] = "/opt/google/touchpad/tpcontrol";
const char kMouseControl[] = "/opt/google/mouse/mousecontrol";
const char kRemoraRequisition[] = "remora";
typedef base::RefCountedData<bool> RefCountedBool;
bool ScriptExists(const std::string& script) {
DCHECK(content::BrowserThread::GetBlockingPool()->RunsTasksOnCurrentThread());
return base::PathExists(base::FilePath(script));
}
// Executes the input control script asynchronously, if it exists.
void ExecuteScriptOnFileThread(const std::vector<std::string>& argv) {
DCHECK(content::BrowserThread::GetBlockingPool()->RunsTasksOnCurrentThread());
DCHECK(!argv.empty());
const std::string& script(argv[0]);
// Script must exist on device.
DCHECK(!base::SysInfo::IsRunningOnChromeOS() || ScriptExists(script));
if (!ScriptExists(script))
return;
base::ProcessHandle handle;
base::LaunchProcess(CommandLine(argv), base::LaunchOptions(), &handle);
base::EnsureProcessGetsReaped(handle);
}
void ExecuteScript(int argc, ...) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
std::vector<std::string> argv;
va_list vl;
va_start(vl, argc);
for (int i = 0; i < argc; ++i) {
argv.push_back(va_arg(vl, const char*));
}
va_end(vl);
// Control scripts can take long enough to cause SIGART during shutdown
// (http://crbug.com/261426). Run the blocking pool task with
// CONTINUE_ON_SHUTDOWN so it won't be joined when Chrome shuts down.
base::SequencedWorkerPool* pool = content::BrowserThread::GetBlockingPool();
scoped_refptr<base::TaskRunner> runner =
pool->GetTaskRunnerWithShutdownBehavior(
base::SequencedWorkerPool::CONTINUE_ON_SHUTDOWN);
runner->PostTask(FROM_HERE, base::Bind(&ExecuteScriptOnFileThread, argv));
}
void SetPointerSensitivity(const char* script, int value) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
DCHECK(value >= kMinPointerSensitivity && value <= kMaxPointerSensitivity);
ExecuteScript(
3, script, "sensitivity", base::StringPrintf("%d", value).c_str());
}
void SetTPControl(const char* control, bool enabled) {
ExecuteScript(3, kTpControl, control, enabled ? "on" : "off");
}
void DeviceExistsBlockingPool(const char* script,
scoped_refptr<RefCountedBool> exists) {
DCHECK(content::BrowserThread::GetBlockingPool()->RunsTasksOnCurrentThread());
exists->data = false;
if (!ScriptExists(script))
return;
std::vector<std::string> argv;
argv.push_back(script);
argv.push_back("status");
std::string output;
// Output is empty if the device is not found.
exists->data = base::GetAppOutput(CommandLine(argv), &output) &&
!output.empty();
DVLOG(1) << "DeviceExistsBlockingPool:" << script << "=" << exists->data;
}
void RunCallbackUIThread(scoped_refptr<RefCountedBool> exists,
const DeviceExistsCallback& callback) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
DVLOG(1) << "RunCallbackUIThread " << exists->data;
callback.Run(exists->data);
}
void DeviceExists(const char* script, const DeviceExistsCallback& callback) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
// One or both of the control scripts can apparently hang during shutdown
// (http://crbug.com/255546). Run the blocking pool task with
// CONTINUE_ON_SHUTDOWN so it won't be joined when Chrome shuts down.
scoped_refptr<RefCountedBool> exists(new RefCountedBool(false));
base::SequencedWorkerPool* pool = content::BrowserThread::GetBlockingPool();
scoped_refptr<base::TaskRunner> runner =
pool->GetTaskRunnerWithShutdownBehavior(
base::SequencedWorkerPool::CONTINUE_ON_SHUTDOWN);
runner->PostTaskAndReply(FROM_HERE,
base::Bind(&DeviceExistsBlockingPool, script, exists),
base::Bind(&RunCallbackUIThread, exists, callback));
}
} // namespace
namespace touchpad_settings {
void TouchpadExists(const DeviceExistsCallback& callback) {
DeviceExists(kTpControl, callback);
}
// Sets the touchpad sensitivity in the range [1, 5].
void SetSensitivity(int value) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
SetPointerSensitivity(kTpControl, value);
}
void SetTapToClick(bool enabled) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
SetTPControl("taptoclick", enabled);
}
void SetThreeFingerClick(bool enabled) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
// For Alex/ZGB.
SetTPControl("t5r2_three_finger_click", enabled);
}
void SetTapDragging(bool enabled) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
SetTPControl("tap_dragging", enabled);
}
} // namespace touchpad_settings
namespace mouse_settings {
void MouseExists(const DeviceExistsCallback& callback) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
DeviceExists(kMouseControl, callback);
}
// Sets the touchpad sensitivity in the range [1, 5].
void SetSensitivity(int value) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
SetPointerSensitivity(kMouseControl, value);
}
void SetPrimaryButtonRight(bool right) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
ExecuteScript(3, kMouseControl, "swap_left_right", right ? "1" : "0");
}
} // namespace mouse_settings
namespace keyboard_settings {
bool ForceKeyboardDrivenUINavigation() {
policy::BrowserPolicyConnector* connector =
g_browser_process->browser_policy_connector();
if (!connector)
return false;
policy::DeviceCloudPolicyManagerChromeOS* policy_manager =
connector->GetDeviceCloudPolicyManager();
if (!policy_manager)
return false;
if (base::strcasecmp(policy_manager->GetDeviceRequisition().c_str(),
kRemoraRequisition) == 0) {
return true;
}
bool keyboard_driven = false;
if (chromeos::system::StatisticsProvider::GetInstance()->GetMachineFlag(
kOemKeyboardDrivenOobeKey, &keyboard_driven)) {
return keyboard_driven;
}
return false;
}
} // namespace keyboard_settings
} // namespace system
} // namespace chromeos
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