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/*
* Copyright 2018 - 2020 Anton Tananaev (anton@traccar.org)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.traccar;
import com.sun.jna.Pointer;
import com.sun.jna.platform.win32.Advapi32;
import com.sun.jna.platform.win32.WinError;
import com.sun.jna.platform.win32.WinNT;
import com.sun.jna.platform.win32.Winsvc;
import com.sun.jna.platform.win32.Winsvc.HandlerEx;
import com.sun.jna.platform.win32.Winsvc.SC_HANDLE;
import com.sun.jna.platform.win32.Winsvc.SERVICE_DESCRIPTION;
import com.sun.jna.platform.win32.Winsvc.SERVICE_MAIN_FUNCTION;
import com.sun.jna.platform.win32.Winsvc.SERVICE_STATUS;
import com.sun.jna.platform.win32.Winsvc.SERVICE_STATUS_HANDLE;
import com.sun.jna.platform.win32.Winsvc.SERVICE_TABLE_ENTRY;
import jnr.posix.POSIXFactory;
import java.io.File;
import java.net.URISyntaxException;
public abstract class WindowsService {
private static final Advapi32 ADVAPI_32 = Advapi32.INSTANCE;
private final Object waitObject = new Object();
private final String serviceName;
private SERVICE_STATUS_HANDLE serviceStatusHandle;
public WindowsService(String serviceName) {
this.serviceName = serviceName;
}
public void install(
String displayName, String description, String[] dependencies,
String account, String password, String config) throws URISyntaxException {
String javaHome = System.getProperty("java.home");
String javaBinary = "\"" + javaHome + "\\bin\\java.exe\"";
File jar = new File(WindowsService.class.getProtectionDomain().getCodeSource().getLocation().toURI());
String command = javaBinary
+ " -Duser.dir=\"" + jar.getParentFile().getAbsolutePath() + "\""
+ " -jar \"" + jar.getAbsolutePath() + "\""
+ " --service \"" + config + "\"";
StringBuilder dep = new StringBuilder();
if (dependencies != null) {
for (String s : dependencies) {
dep.append(s);
dep.append("\0");
}
}
dep.append("\0");
SERVICE_DESCRIPTION desc = new SERVICE_DESCRIPTION();
desc.lpDescription = description;
SC_HANDLE serviceManager = openServiceControlManager(null, Winsvc.SC_MANAGER_ALL_ACCESS);
if (serviceManager != null) {
SC_HANDLE service = ADVAPI_32.CreateService(serviceManager, serviceName, displayName,
Winsvc.SERVICE_ALL_ACCESS, WinNT.SERVICE_WIN32_OWN_PROCESS, WinNT.SERVICE_AUTO_START,
WinNT.SERVICE_ERROR_NORMAL,
command,
null, null, dep.toString(), account, password);
if (service != null) {
ADVAPI_32.ChangeServiceConfig2(service, Winsvc.SERVICE_CONFIG_DESCRIPTION, desc);
ADVAPI_32.CloseServiceHandle(service);
}
ADVAPI_32.CloseServiceHandle(serviceManager);
}
}
public void uninstall() {
SC_HANDLE serviceManager = openServiceControlManager(null, Winsvc.SC_MANAGER_ALL_ACCESS);
if (serviceManager != null) {
SC_HANDLE service = ADVAPI_32.OpenService(serviceManager, serviceName, Winsvc.SERVICE_ALL_ACCESS);
if (service != null) {
ADVAPI_32.DeleteService(service);
ADVAPI_32.CloseServiceHandle(service);
}
ADVAPI_32.CloseServiceHandle(serviceManager);
}
}
public boolean start() {
boolean success = false;
SC_HANDLE serviceManager = openServiceControlManager(null, WinNT.GENERIC_EXECUTE);
if (serviceManager != null) {
SC_HANDLE service = ADVAPI_32.OpenService(serviceManager, serviceName, WinNT.GENERIC_EXECUTE);
if (service != null) {
success = ADVAPI_32.StartService(service, 0, null);
ADVAPI_32.CloseServiceHandle(service);
}
ADVAPI_32.CloseServiceHandle(serviceManager);
}
return success;
}
public boolean stop() {
boolean success = false;
SC_HANDLE serviceManager = openServiceControlManager(null, WinNT.GENERIC_EXECUTE);
if (serviceManager != null) {
SC_HANDLE service = Advapi32.INSTANCE.OpenService(serviceManager, serviceName, WinNT.GENERIC_EXECUTE);
if (service != null) {
SERVICE_STATUS serviceStatus = new SERVICE_STATUS();
success = Advapi32.INSTANCE.ControlService(service, Winsvc.SERVICE_CONTROL_STOP, serviceStatus);
Advapi32.INSTANCE.CloseServiceHandle(service);
}
Advapi32.INSTANCE.CloseServiceHandle(serviceManager);
}
return success;
}
public void init() throws URISyntaxException {
String path = new File(
WindowsService.class.getProtectionDomain().getCodeSource().getLocation().toURI()).getParent();
POSIXFactory.getPOSIX().chdir(path);
ServiceMain serviceMain = new ServiceMain();
SERVICE_TABLE_ENTRY entry = new SERVICE_TABLE_ENTRY();
entry.lpServiceName = serviceName;
entry.lpServiceProc = serviceMain;
Advapi32.INSTANCE.StartServiceCtrlDispatcher((SERVICE_TABLE_ENTRY[]) entry.toArray(2));
}
private SC_HANDLE openServiceControlManager(String machine, int access) {
return ADVAPI_32.OpenSCManager(machine, null, access);
}
private void reportStatus(int status, int win32ExitCode, int waitHint) {
SERVICE_STATUS serviceStatus = new SERVICE_STATUS();
serviceStatus.dwServiceType = WinNT.SERVICE_WIN32_OWN_PROCESS;
serviceStatus.dwControlsAccepted = Winsvc.SERVICE_ACCEPT_STOP | Winsvc.SERVICE_ACCEPT_SHUTDOWN;
serviceStatus.dwWin32ExitCode = win32ExitCode;
serviceStatus.dwWaitHint = waitHint;
serviceStatus.dwCurrentState = status;
ADVAPI_32.SetServiceStatus(serviceStatusHandle, serviceStatus);
}
public abstract void run();
private final class ServiceMain implements SERVICE_MAIN_FUNCTION {
public void callback(int dwArgc, Pointer lpszArgv) {
ServiceControl serviceControl = new ServiceControl();
serviceStatusHandle = ADVAPI_32.RegisterServiceCtrlHandlerEx(serviceName, serviceControl, null);
reportStatus(Winsvc.SERVICE_START_PENDING, WinError.NO_ERROR, 3000);
reportStatus(Winsvc.SERVICE_RUNNING, WinError.NO_ERROR, 0);
Thread.currentThread().setContextClassLoader(WindowsService.class.getClassLoader());
run();
try {
synchronized (waitObject) {
waitObject.wait();
}
} catch (InterruptedException e) {
e.printStackTrace();
}
reportStatus(Winsvc.SERVICE_STOPPED, WinError.NO_ERROR, 0);
// Avoid returning from ServiceMain, which will cause a crash
// See http://support.microsoft.com/kb/201349, which recommends
// having init() wait for this thread.
// Waiting on this thread in init() won't fix the crash, though.
System.exit(0);
}
}
private final class ServiceControl implements HandlerEx {
public int callback(int dwControl, int dwEventType, Pointer lpEventData, Pointer lpContext) {
if (dwControl == Winsvc.SERVICE_CONTROL_STOP || dwControl == Winsvc.SERVICE_CONTROL_SHUTDOWN) {
reportStatus(Winsvc.SERVICE_STOP_PENDING, WinError.NO_ERROR, 5000);
synchronized (waitObject) {
waitObject.notifyAll();
}
}
return WinError.NO_ERROR;
}
}
}
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