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/*
* Copyright (c) 2008-2012, 2016 Eike Stepper (Berlin, Germany) and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.net4j.util.security;
import org.eclipse.net4j.util.StringUtil;
import org.eclipse.net4j.util.io.IORuntimeException;
import org.eclipse.net4j.util.io.IOUtil;
import org.eclipse.net4j.util.om.OMPlatform;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.text.MessageFormat;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Properties;
/**
* @author Eike Stepper
*/
public class FileUserManager extends UserManager
{
private static final boolean FALL_BACK_TO_CONFIG_FOLDER = OMPlatform.INSTANCE.isProperty("net4j.security.FileUserManager.fallBackToConfigFolder");
private static final String CONFIG_FOLDER_PREFIX = "@config/";
protected String fileName;
private File file;
public FileUserManager()
{
}
public String getFileName()
{
return fileName;
}
/**
* Sets the name of the file to be used by this user manager.
* <p>
* The {@link #getFile() file} is resolved in the following order:
* <ol>
* <li> If it starts with the path segment "@config" the subsequent path segments are interpreted as relative to the {@link OMPlatform#getConfigFolder() config folder}.
* <li> If it is relative it is interpreted as relative to the application's current directory.
* <li> Otherwise it is interpreted as absolute.
* </ol>
* The resolved file is not required to exist when this user manager is activated. In this case it will be created when {@link #addUser(String, char[]) addUser()}
* or {@link #removeUser(String) removeUser()} are called.
* <p>
* With "-Dnet4j.security.FileUserManager.fallBackToConfigFolder=true" a relative path is resolved in both the application's current folder
* and the config folder (in this order).
*/
public void setFileName(String fileName)
{
checkInactive();
this.fileName = fileName;
}
/**
* @since 3.7
*/
public final File getFile()
{
return file;
}
/**
* @since 3.7
*/
protected File resolveFile(String fileName) throws Exception
{
if (StringUtil.isEmpty(fileName))
{
return null;
}
if (fileName.replace('\\', '/').startsWith(CONFIG_FOLDER_PREFIX))
{
return OMPlatform.INSTANCE.getConfigFile(fileName.substring(CONFIG_FOLDER_PREFIX.length()));
}
File file = new File(fileName);
if (FALL_BACK_TO_CONFIG_FOLDER && !file.isFile())
{
File configFile = OMPlatform.INSTANCE.getConfigFile(fileName);
if (configFile != null && configFile.isFile())
{
return configFile;
}
}
return file;
}
@Override
protected void doBeforeActivate() throws Exception
{
super.doBeforeActivate();
file = resolveFile(fileName);
if (file != null)
{
file = file.getCanonicalFile();
}
}
@Override
protected void doDeactivate() throws Exception
{
super.doDeactivate();
file = null;
}
@Override
protected void load(Map<String, char[]> users) throws IORuntimeException
{
if (file != null && file.isFile())
{
FileInputStream stream = IOUtil.openInputStream(file);
try
{
load(users, stream);
}
catch (IOException ex)
{
throw new IORuntimeException(ex);
}
finally
{
IOUtil.closeSilent(stream);
}
}
}
protected void load(Map<String, char[]> users, InputStream stream) throws IOException
{
Properties properties = new Properties();
properties.load(stream);
for (Entry<Object, Object> entry : properties.entrySet())
{
String userID = (String)entry.getKey();
char[] password = ((String)entry.getValue()).toCharArray();
users.put(userID, password);
}
}
@Override
protected void save(Map<String, char[]> users) throws IORuntimeException
{
if (file != null)
{
file.getParentFile().mkdirs();
FileOutputStream stream = IOUtil.openOutputStream(file);
try
{
save(users, stream);
}
catch (IOException ex)
{
throw new IORuntimeException(ex);
}
finally
{
IOUtil.closeSilent(stream);
}
}
}
protected void save(Map<String, char[]> users, FileOutputStream stream) throws IOException
{
Properties properties = new Properties();
for (Entry<String, char[]> entry : users.entrySet())
{
properties.put(entry.getKey(), new String(entry.getValue()));
}
String comment = MessageFormat.format("User database {0,date} {0,time,HH:mm:ss:SSS}", System.currentTimeMillis());
properties.store(stream, comment);
}
}
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