GetORBPropertiesFileAction.java revision 653:47b9cf289a91 
1/*
2 * Copyright (c) 1999, 2001, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26/*
27 * (C) Copyright IBM Corp. 1993 - 1997 - All Rights Reserved
28 *
29 * The original version of this source code and documentation is
30 * copyrighted and owned by IBM, Inc. These materials are provided under
31 * terms of a License Agreement between IBM and Sun. This technology is
32 * protected by multiple US and International patents. This notice and
33 * attribution to IBM may not be removed.
34 *
35 */
36
37
38package javax.rmi.CORBA;
39
40import java.io.IOException;
41import java.io.File;
42import java.io.FileInputStream;
43
44import java.security.AccessController;
45import java.security.PrivilegedAction;
46import java.util.Properties;
47
48class GetORBPropertiesFileAction implements PrivilegedAction {
49    private boolean debug = false ;
50
51    public GetORBPropertiesFileAction () {
52    }
53
54    private String getSystemProperty(final String name) {
55        // This will not throw a SecurityException because this
56        // class was loaded from rt.jar using the bootstrap classloader.
57        String propValue = (String) AccessController.doPrivileged(
58            new PrivilegedAction() {
59                public java.lang.Object run() {
60                    return System.getProperty(name);
61                }
62            }
63        );
64
65        return propValue;
66    }
67
68    private void getPropertiesFromFile( Properties props, String fileName )
69    {
70        try {
71            File file = new File( fileName ) ;
72            if (!file.exists())
73                return ;
74
75            FileInputStream in = new FileInputStream( file ) ;
76
77            try {
78                props.load( in ) ;
79            } finally {
80                in.close() ;
81            }
82        } catch (Exception exc) {
83            if (debug)
84                System.out.println( "ORB properties file " + fileName +
85                    " not found: " + exc) ;
86        }
87    }
88
89    public Object run()
90    {
91        Properties defaults = new Properties() ;
92
93        String javaHome = getSystemProperty( "java.home" ) ;
94        String fileName = javaHome + File.separator + "lib" + File.separator +
95            "orb.properties" ;
96
97        getPropertiesFromFile( defaults, fileName ) ;
98
99        Properties results = new Properties( defaults ) ;
100
101        String userHome = getSystemProperty( "user.home" ) ;
102        fileName = userHome + File.separator + "orb.properties" ;
103
104        getPropertiesFromFile( results, fileName ) ;
105        return results ;
106    }
107}
108