1 /*

     2  * Copyright (c) 2004, 2017, 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 package javax.xml.transform;

    27 

    28 import java.security.*;

    29 import 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  */

    38 class SecuritySupport  {

    39 

    40 

    41     ClassLoader getContextClassLoader() throws SecurityException{

    42         return (ClassLoader)

    43         AccessController.doPrivileged(new PrivilegedAction() {

    44             public Object run() {

    45                 ClassLoader cl = null;

    46                 //try {

    47                 cl = Thread.currentThread().getContextClassLoader();

    48                 //} catch (SecurityException ex) { }

    49                 if (cl == null)

    50                     cl = ClassLoader.getSystemClassLoader();

    51                 return cl;

    52             }

    53         });

    54     }

    55 

    56     String getSystemProperty(final String propName) {

    57         return (String)

    58             AccessController.doPrivileged(new PrivilegedAction() {

    59                 public Object run() {

    60                     return System.getProperty(propName);

    61                 }

    62             });

    63     }

    64 

    65     FileInputStream getFileInputStream(final File file)

    66         throws FileNotFoundException

    67     {

    68         try {

    69             return (FileInputStream)

    70                 AccessController.doPrivileged(new PrivilegedExceptionAction() {

    71                     public Object run() throws FileNotFoundException {

    72                         return new FileInputStream(file);

    73                     }

    74                 });

    75         } catch (PrivilegedActionException e) {

    76             throw (FileNotFoundException)e.getException();

    77         }

    78     }

    79 

    80     boolean doesFileExist(final File f) {

    81     return ((Boolean)

    82             AccessController.doPrivileged(new PrivilegedAction() {

    83                 public Object run() {

    84                     return f.exists();

    85                 }

    86             })).booleanValue();

    87     }

    88 

    89 }