/*
* Copyright (C) 2003-2011 eXo Platform SAS.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.etk.common.utils;
import java.io.InputStream;
import java.net.URL;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Properties;
/**
* Created by The eXo Platform SAS
* Author : eXoPlatform
* thanhvucong.78@google.com
* Aug 11, 2011
*/
public class PrivilegedSystemHelper
{
/**
* Gets system property in privileged mode.
*
* @param key
* @return
*/
public static String getProperty(final String key)
{
PrivilegedAction<String> action = new PrivilegedAction<String>()
{
public String run()
{
return System.getProperty(key);
}
};
return AccessController.doPrivileged(action);
}
/**
* Gets system properties in privileged mode.
*
* @param key
* @return
*/
public static Properties getProperties()
{
PrivilegedAction<Properties> action = new PrivilegedAction<Properties>()
{
public Properties run()
{
return System.getProperties();
}
};
return AccessController.doPrivileged(action);
}
/**
* Gets system property in privileged mode.
*
* @param key
* @return
*/
public static void setProperty(final String key, final String value)
{
PrivilegedAction<Void> action = new PrivilegedAction<Void>()
{
public Void run()
{
System.setProperty(key, value);
return null;
}
};
AccessController.doPrivileged(action);
}
/**
* Gets system property in privileged mode.
*
* @param key
* @param def
* @return
*/
public static String getProperty(final String key, final String def)
{
PrivilegedAction<String> action = new PrivilegedAction<String>()
{
public String run()
{
return System.getProperty(key, def);
}
};
return AccessController.doPrivileged(action);
}
/**
* Get resource in privileged mode.
*
* @param key
* @param def
* @return
*/
public static URL getResource(final String name)
{
PrivilegedAction<URL> action = new PrivilegedAction<URL>()
{
public URL run()
{
return Thread.currentThread().getContextClassLoader().getResource(name);
}
};
return AccessController.doPrivileged(action);
}
/**
* Get resource as stream in privileged mode.
*
* @param key
* @param def
* @return
*/
public static InputStream getResourceAsStream(final String name)
{
PrivilegedAction<InputStream> action = new PrivilegedAction<InputStream>()
{
public InputStream run()
{
return Thread.currentThread().getContextClassLoader().getResourceAsStream(name);
}
};
return AccessController.doPrivileged(action);
}
}