/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * particular file as subject to the "Classpath" exception as provided

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 */

/*

 * (C) Copyright IBM Corp. 1993 - 1997 - All Rights Reserved

 *

 * The original version of this source code and documentation is

 * copyrighted and owned by IBM, Inc. These materials are provided under

 * terms of a License Agreement between IBM and Sun. This technology is

 * protected by multiple US and International patents. This notice and

 * attribution to IBM may not be removed.

 *

 */

package javax.rmi.CORBA;

import java.io.IOException;

import java.io.File;

import java.io.FileInputStream;

import java.security.AccessController;

import java.security.PrivilegedAction;

import sun.security.action.GetPropertyAction;

import java.util.Properties;

class GetORBPropertiesFileAction implements PrivilegedAction {

    private boolean debug = false ;

    public GetORBPropertiesFileAction () {

    }

    private String getSystemProperty(final String name) {

        // This will not throw a SecurityException because this

        // class was loaded from rt.jar using the bootstrap classloader.

        String propValue = (String) AccessController.doPrivileged(

            new PrivilegedAction() {

                public java.lang.Object run() {

                    return System.getProperty(name);

                }

            }

        );

        return propValue;

    }

    private void getPropertiesFromFile( Properties props, String fileName )

    {

        try {

            File file = new File( fileName ) ;

            if (!file.exists())

                return ;

            FileInputStream in = new FileInputStream( file ) ;

            try {

                props.load( in ) ;

            } finally {

                in.close() ;

            }

        } catch (Exception exc) {

            if (debug)

                System.out.println( "ORB properties file " + fileName +

                    " not found: " + exc) ;

        }

    }

    public Object run()

    {

        Properties defaults = new Properties() ;

        String javaHome = getSystemProperty( "java.home" ) ;

        String fileName = javaHome + File.separator + "lib" + File.separator +

            "orb.properties" ;

        getPropertiesFromFile( defaults, fileName ) ;

        Properties results = new Properties( defaults ) ;

        String userHome = getSystemProperty( "user.home" ) ;

        fileName = userHome + File.separator + "orb.properties" ;

        getPropertiesFromFile( results, fileName ) ;

        return results ;

    }

}