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// --- BEGIN COPYRIGHT BLOCK ---
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; version 2 of the License.
//
// 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// (C) 2007 Red Hat, Inc.
// All rights reserved.
// --- END COPYRIGHT BLOCK ---
package com.netscape.osutil;
import java.io.*;
/**
* This class is a simple reflection of the Unix getuid/setuid
* functionality
*/
public class UserID {
/**
* Return the current real user ID of the JavaVM
*/
public static native int get();
/**
* Return the current effective user ID of the JavaVM
*/
public static native int getEffective();
/**
* Set the current real user ID of the JavaVM
*
* @param id the user id
*/
public static native void set(int id);
/**
* Set the current real user ID of the JavaVM
*
* @param user the user name
*/
public static native void set(String user);
/**
* Set the current effective user ID of the JavaVM
*
* @param id the user id
*/
public static native void setEffective(int id);
/**
* Set the current effective user ID of the JavaVM
*
* @param user the user name
*/
public static native void setEffective(String user);
static {
boolean mNativeLibrariesLoaded = false;
if (File.separatorChar == '/') {
String os = System.getProperty( "os.name" );
if( ( os.equals( "Linux" ) ) ) {
// Check for 64-bit library availability
// prior to 32-bit library availability.
mNativeLibrariesLoaded =
OSUtil.tryLoad( "/usr/lib64/osutil/libosutil.so" );
if( mNativeLibrariesLoaded ) {
System.out.println( "64-bit osutil library loaded" );
} else {
// REMINDER: May be trying to run a 32-bit app
// on 64-bit platform.
mNativeLibrariesLoaded =
OSUtil.tryLoad( "/usr/lib/osutil/libosutil.so" );
if( mNativeLibrariesLoaded ) {
System.out.println( "32-bit osutil library loaded");
} else {
System.out.println( "FAILED loading osutil library!");
System.exit( -1 );
}
}
} else {
try {
System.loadLibrary( "osutil" );
System.out.println( "osutil library loaded" );
mNativeLibrariesLoaded = true;
} catch( Throwable t ) {
// This is bad news, the program is doomed at this point
t.printStackTrace();
}
}
}
}
}
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