1/*
2 * Copyright (c) 2006, 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
26package javax.xml.stream;
27
28import java.security.*;
29import java.io.*;
30
31/**
32 * This class is duplicated for each JAXP subpackage so keep it in sync.
33 * It is package private and therefore is not exposed as part of the JAXP
34 * API.
35 *
36 * Security related methods that only work on J2SE 1.2 and newer.
37 */
38class SecuritySupport  {
39
40
41    ClassLoader getContextClassLoader() throws SecurityException{
42        return AccessController.doPrivileged((PrivilegedAction<ClassLoader>) () -> {
43            ClassLoader cl = Thread.currentThread().getContextClassLoader();
44
45            if (cl == null)
46                cl = ClassLoader.getSystemClassLoader();
47
48            return cl;
49        });
50    }
51
52    String getSystemProperty(final String propName) {
53        return AccessController.doPrivileged((PrivilegedAction<String>) () ->
54                System.getProperty(propName));
55    }
56
57    FileInputStream getFileInputStream(final File file)
58        throws FileNotFoundException
59    {
60        try {
61            return AccessController.doPrivileged((PrivilegedExceptionAction<FileInputStream>) ()
62                    -> new FileInputStream(file));
63        } catch (PrivilegedActionException e) {
64            throw (FileNotFoundException)e.getException();
65        }
66    }
67
68    boolean doesFileExist(final File f) {
69        return AccessController.doPrivileged((PrivilegedAction<Boolean>) () -> f.exists());
70    }
71
72}
73