1 /*

     2  * Copyright (c) 2005, 2015, 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.validation;

    27 

    28 import java.net.URL;

    29 import java.security.*;

    30 import java.io.*;

    31 

    32 /**

    33  * This class is duplicated for each JAXP subpackage so keep it in sync.

    34  * It is package private and therefore is not exposed as part of the JAXP

    35  * API.

    36  *

    37  * Security related methods that only work on J2SE 1.2 and newer.

    38  */

    39 class SecuritySupport  {

    40 

    41 

    42     ClassLoader getContextClassLoader() {

    43         return

    44         AccessController.doPrivileged(new PrivilegedAction<>() {

    45             @Override

    46             public ClassLoader run() {

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

    48                 if (cl == null)

    49                     cl = ClassLoader.getSystemClassLoader();

    50                 return cl;

    51             }

    52         });

    53     }

    54 

    55     String getSystemProperty(final String propName) {

    56         return AccessController.doPrivileged(new PrivilegedAction<>() {

    57                 @Override

    58                 public String run() {

    59                     return System.getProperty(propName);

    60                 }

    61             });

    62     }

    63 

    64     FileInputStream getFileInputStream(final File file)

    65         throws FileNotFoundException

    66     {

    67         try {

    68             return AccessController.doPrivileged(

    69                 new PrivilegedExceptionAction<>() {

    70                     @Override

    71                     public FileInputStream run() throws FileNotFoundException {

    72                         return new FileInputStream(file);

    73                     }

    74                 });

    75         } catch (PrivilegedActionException e) {

    76             throw (FileNotFoundException)e.getException();

    77         }

    78     }

    79 

    80     // Used for debugging purposes

    81     String getClassSource(Class<?> cls) {

    82         return AccessController.doPrivileged(new PrivilegedAction<>() {

    83             @Override

    84             public String run() {

    85                 CodeSource cs = cls.getProtectionDomain().getCodeSource();

    86                 if (cs != null) {

    87                    URL loc = cs.getLocation();

    88                    return loc != null ? loc.toString() : "(no location)";

    89                 } else {

    90                    return "(no code source)";

    91                 }

    92             }

    93         });

    94     }

    95 

    96     boolean doesFileExist(final File f) {

    97         return AccessController.doPrivileged(new PrivilegedAction<>() {

    98             @Override

    99             public Boolean run() {

   100                 return f.exists();

   101             }

   102         });

   103     }

   104 

   105 }