com.izforge.izpack.uninstaller.Uninstaller Maven / Gradle / Ivy
/*
* IzPack - Copyright 2001-2008 Julien Ponge, All Rights Reserved.
*
* http://izpack.org/
* http://izpack.codehaus.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 com.izforge.izpack.uninstaller;
import com.izforge.izpack.core.resource.DefaultResources;
import com.izforge.izpack.uninstaller.console.ConsoleUninstaller;
import com.izforge.izpack.uninstaller.console.ConsoleUninstallerContainer;
import com.izforge.izpack.uninstaller.container.UninstallerContainer;
import com.izforge.izpack.uninstaller.gui.GUIUninstallerContainer;
import com.izforge.izpack.uninstaller.gui.UninstallerFrame;
import com.izforge.izpack.uninstaller.resource.InstallLog;
import com.izforge.izpack.util.*;
import javax.swing.*;
import java.io.IOException;
import java.lang.reflect.Method;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* The uninstaller class.
*
* @author Julien Ponge
* @author Tim Anderson
*/
public class Uninstaller
{
/**
* The exec-admin resource path.
*/
private static final String EXEC_ADMIN = "/exec-admin";
/**
* The logger.
*/
private static final Logger logger = Logger.getLogger(Uninstaller.class.getName());
/**
* The main method (program entry point).
*
* @param args The arguments passed on the command line.
*/
public static void main(String[] args)
{
// relaunch the uninstaller with elevated permissions if required
Platform platform = new Platforms().getCurrentPlatform();
try
{
if (!PrivilegedRunner.isPrivilegedMode() && isElevationRequired(platform))
{
if (relaunchWithElevatedRights(platform, args))
{
System.exit(0);
}
}
}
catch (IOException exception)
{
logger.log(Level.SEVERE, exception.getMessage(), exception);
System.exit(1);
}
boolean console = false;
for (String arg : args)
{
if (arg.equals("-c"))
{
console = true;
}
}
if (console)
{
System.out.println("Command line uninstaller.\n");
}
try
{
Class clazz = Uninstaller.class;
Method target;
if (console)
{
target = clazz.getMethod("consoleUninstall", new Class[]{String[].class});
}
else
{
target = clazz.getMethod("uninstall", new Class[]{String[].class});
}
new SelfModifier(target).invoke(args);
}
catch (Exception ioeOrTypo)
{
System.err.println(ioeOrTypo.getMessage());
ioeOrTypo.printStackTrace();
System.err.println("Unable to exec java as a subprocess.");
System.err.println("The uninstall may not fully complete.");
uninstall(args);
}
}
/**
* Runs uninstallation via the console.
*
* @param args the command line arguments
*/
public static void consoleUninstall(String[] args)
{
UninstallerContainer container = new ConsoleUninstallerContainer();
try
{
ConsoleUninstaller uninstaller = container.getComponent(ConsoleUninstaller.class);
boolean force = false;
for (String arg : args)
{
if (arg.equals("-f"))
{
force = true;
}
}
uninstaller.uninstall(force);
}
catch (Exception err)
{
shutdown(container, err);
}
}
public static void uninstall(final String[] args)
{
SwingUtilities.invokeLater(new Runnable()
{
public void run()
{
UninstallerContainer container = new GUIUninstallerContainer();
try
{
boolean displayForceOption = true;
boolean forceOptionState = false;
for (String arg : args)
{
if (arg.equals("-f"))
{
forceOptionState = true;
}
else if (arg.equals("-x"))
{
displayForceOption = false;
}
}
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
UninstallerFrame uninstaller = container.getComponent(UninstallerFrame.class);
uninstaller.init(displayForceOption, forceOptionState);
}
catch (Exception err)
{
shutdown(container, err);
}
}
});
}
private static void shutdown(UninstallerContainer container, Exception error)
{
logger.log(Level.SEVERE, error.getMessage(), error);
container.getComponent(Housekeeper.class).shutDown(1);
}
/**
* Attempts to relaunch the uninstaller with elevated permissions.
*
* @param platform the current platform
* @return true if the relaunch was successful, otherwise false
*/
private static boolean relaunchWithElevatedRights(Platform platform, String[] args)
{
boolean result = false;
PrivilegedRunner runner = new PrivilegedRunner(platform);
if (runner.isPlatformSupported())
{
try
{
if (runner.relaunchWithElevatedRights(args) == 0)
{
result = true;
}
}
catch (Exception exception)
{
JOptionPane.showMessageDialog(null,
"The uninstaller could not launch itself with administrator permissions.\n" +
"Please re-run the installer with administrative privileges.");
System.exit(0);
}
}
else
{
JOptionPane.showMessageDialog(null, "The current platform you are running is not supported.\n" +
"The uninstallation will still continue but you may encounter problems.");
}
return result;
}
/**
* Determines if permission elevation is required to uninstall the application.
*
* Permission elevation is required if:
*
* - the exec-admin resource exists; and
* - the current user doesn't have permission to write to the install path
*
*
* @param platform the current platform
* @return true if elevation is needed
* @throws IOException if the installation path cannot be determined
*/
private static boolean isElevationRequired(Platform platform) throws IOException
{
boolean result = false;
if (Uninstaller.class.getResource(EXEC_ADMIN) != null)
{
String path = InstallLog.getInstallPath(new DefaultResources());
PrivilegedRunner runner = new PrivilegedRunner(platform);
result = runner.isElevationNeeded(path);
}
return result;
}
}