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/*
* 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.ExecutableFile;
import com.izforge.izpack.event.UninstallerListener;
import com.izforge.izpack.installer.UninstallData;
import com.izforge.izpack.util.AbstractUIProgressHandler;
import com.izforge.izpack.util.Debug;
import com.izforge.izpack.util.FileExecutor;
import com.izforge.izpack.util.OsVersion;
import com.izforge.izpack.util.os.unix.ShellScript;
import java.io.*;
import java.util.*;
/**
* The files destroyer class.
*
* @author Julien Ponge
*/
public class Destroyer extends Thread
{
/**
* True if the destroyer must force the recursive deletion.
*/
private boolean forceDestroy;
/**
* The installation path.
*/
private String installPath;
/**
* the destroyer listener.
*/
private AbstractUIProgressHandler handler;
/**
* The constructor.
*
* @param installPath The installation path.
* @param forceDestroy Shall we force the recursive deletion.
* @param handler The destroyer listener.
*/
public Destroyer(String installPath, boolean forceDestroy, AbstractUIProgressHandler handler)
{
super("IzPack - Destroyer");
this.installPath = installPath;
this.forceDestroy = forceDestroy;
this.handler = handler;
}
/**
* The run method.
*/
public void run()
{
try
{
// We get the list of uninstaller listeners
List[] listeners = getListenerLists();
// We get the list of the files to delete
ArrayList executables = getExecutablesList();
FileExecutor executor = new FileExecutor(executables);
executor.executeFiles(ExecutableFile.UNINSTALL, this.handler);
ArrayList files = getFilesList();
int size = files.size();
// Custem action listener stuff --- beforeDeletion ----
informListeners(listeners[0], UninstallerListener.BEFORE_DELETION, files, handler);
handler.startAction("destroy", size);
// We destroy the files
for (int i = 0; i < size; i++)
{
File file = files.get(i);
// Custem action listener stuff --- beforeDelete ----
informListeners(listeners[1], UninstallerListener.BEFORE_DELETE, file, handler);
file.delete();
// Custem action listener stuff --- afterDelete ----
informListeners(listeners[1], UninstallerListener.AFTER_DELETE, file, handler);
handler.progress(i, file.getAbsolutePath());
}
// Custem action listener stuff --- afterDeletion ----
informListeners(listeners[0], UninstallerListener.AFTER_DELETION, files, handler);
if (OsVersion.IS_UNIX)
{
execRootScript(getRootScript());
}
// We make a complementary cleanup
handler.progress(size, "[ cleanups ]");
cleanup(new File(installPath));
handler.stopAction();
}
catch (Exception err)
{
handler.stopAction();
err.printStackTrace();
StackTraceElement str[] = err.getStackTrace();
for (StackTraceElement aStr : str)
{
}
StringWriter trace = new StringWriter();
//err.printStackTrace(new PrintStream);
err.printStackTrace(new PrintWriter(trace));
handler.emitError("exception caught", err.toString() + "\n" + trace.toString());
}
}
/**
* Asks the JVM for the uninstaller deletion.
*
* @exception Exception Description of the Exception
*/
// private void askUninstallerRemoval() throws Exception
// {
// // Initialisations
// InputStream in = Destroyer.class.getResourceAsStream("/jarlocation.log");
// InputStreamReader inReader = new InputStreamReader(in);
// BufferedReader reader = new BufferedReader(inReader);
//
// // We delete
// File jar = new File(reader.readLine());
// File path = new File(reader.readLine());
// File inst = new File(installPath);
// jar.deleteOnExit();
// path.deleteOnExit();
// inst.deleteOnExit();
// }
/**
* Returns an ArrayList of the files to delete.
*
* @return The files list.
* @throws Exception Description of the Exception
*/
private ArrayList getFilesList() throws Exception
{
// Initialisations
TreeSet files = new TreeSet(Collections.reverseOrder());
InputStream in = Destroyer.class.getResourceAsStream("/install.log");
InputStreamReader inReader = new InputStreamReader(in);
BufferedReader reader = new BufferedReader(inReader);
// We skip the first line (the installation path)
reader.readLine();
// We read it
String read = reader.readLine();
while (read != null)
{
files.add(new File(read));
read = reader.readLine();
}
// We return it
return new ArrayList(files);
}
/**
* Gets the List of all Executables
*
* @return The ArrayList of the Executables
* @throws Exception
*/
private ArrayList getExecutablesList() throws Exception
{
ArrayList executables = new ArrayList();
ObjectInputStream in = new ObjectInputStream(Destroyer.class
.getResourceAsStream("/executables"));
int num = in.readInt();
for (int i = 0; i < num; i++)
{
ExecutableFile file = (ExecutableFile) in.readObject();
executables.add(file);
}
return executables;
}
/**
* Gets the root files.
*
* @return The files which should remove by root for another user
* @throws Exception
*/
private String getRootScript() throws Exception
{
String result = "";
ObjectInputStream in = new ObjectInputStream(Destroyer.class.getResourceAsStream("/"
+ UninstallData.ROOTSCRIPT));
result = in.readUTF();
return result;
}
/**
* Removes the given files as root for the given Users
*
* @param aRootScript The Script to exec as uninstall time by root.
*/
private void execRootScript(String aRootScript)
{
if (!"".equals(aRootScript))
{
Debug.log("Will Execute: " + aRootScript);
try
{
String result = ShellScript.execAndDelete(new StringBuffer(aRootScript), File.createTempFile(
this.getClass().getName(),
Long.toString(System.currentTimeMillis()) + ".sh").toString());
Debug.log("Result: " + result);
}
catch (Exception ex)
{
Debug.log("Exeption during su remove: " + ex.getMessage());
}
}
}
/**
* Makes some reccursive cleanups.
*
* @param file The file to wipe.
* @throws Exception Description of the Exception
*/
private void cleanup(File file) throws Exception
{
if (file.isDirectory())
{
File[] files = file.listFiles();
int size = files.length;
for (int i = 0; i < size; i++)
{
cleanup(files[i]);
}
file.delete();
}
else if (forceDestroy)
{
file.delete();
}
}
// CUSTOM ACTION STUFF -------------- start -----------------
/**
* Load the defined uninstall listener objects.
*
* @return a list with the defined uninstall listeners
* @throws Exception
*/
private List[] getListenerLists() throws Exception
{
ArrayList[] uninstaller = new ArrayList[]{new ArrayList(), new ArrayList()};
// Load listeners if exist
InputStream in;
ObjectInputStream objIn;
in = Destroyer.class.getResourceAsStream("/uninstallerListeners");
if (in != null)
{
objIn = new ObjectInputStream(in);
List listeners = (List) objIn.readObject();
objIn.close();
Iterator iter = listeners.iterator();
while (iter != null && iter.hasNext())
{
Class clazz = (Class) Class.forName(((String) iter.next()));
UninstallerListener ul = clazz.newInstance();
if (ul.isFileListener())
{
uninstaller[1].add(ul);
}
uninstaller[0].add(ul);
}
}
return uninstaller;
}
/**
* Informs all listeners.
*
* @param listeners list with the listener objects
* @param action identifier which callback should be called
* @param param parameter for the call
* @param handler the current progress handler
*/
private void informListeners(List listeners, int action, Object param,
AbstractUIProgressHandler handler)
{
// Iterate the action list.
Iterator iter = listeners.iterator();
UninstallerListener il = null;
while (iter.hasNext())
{
try
{
il = (UninstallerListener) iter.next();
switch (action)
{
case UninstallerListener.BEFORE_DELETION:
il.beforeDeletion((List) param, handler);
break;
case UninstallerListener.AFTER_DELETION:
il.afterDeletion((List) param, handler);
break;
case UninstallerListener.BEFORE_DELETE:
il.beforeDelete((File) param, handler);
break;
case UninstallerListener.AFTER_DELETE:
il.afterDelete((File) param, handler);
break;
}
}
catch (Throwable e)
{ // Catch it to prevent for a block of uninstallation.
handler.emitError("Skipping custom action because exception caught during "
+ il.getClass().getName(), e.toString());
}
}
}
// CUSTOM ACTION STUFF -------------- end -----------------
}
