1 /*

     2  * Copyright 2005-2006 Sun Microsystems, Inc.  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.  Sun designates this

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

     9  * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    22  * CA 95054 USA or visit www.sun.com if you need additional information or

    23  * have any questions.

    24  */

    25 

    26 package javax.xml.validation;

    27 

    28 import java.io.IOException;

    29 import java.net.URL;

    30 import java.security.*;

    31 import java.net.*;

    32 import java.io.*;

    33 import java.util.*;

    34 

    35 /**

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

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

    38  * API.

    39  *

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

    41  */

    42 class SecuritySupport  {

    43 

    44 

    45     ClassLoader getContextClassLoader() {

    46         return (ClassLoader)

    47         AccessController.doPrivileged(new PrivilegedAction() {

    48             public Object run() {

    49                 ClassLoader cl = null;

    50                 //try {

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

    52                 //} catch (SecurityException ex) { }

    53                 if (cl == null)

    54                     cl = ClassLoader.getSystemClassLoader();

    55                 return cl;

    56             }

    57         });

    58     }

    59 

    60     String getSystemProperty(final String propName) {

    61         return (String)

    62             AccessController.doPrivileged(new PrivilegedAction() {

    63                 public Object run() {

    64                     return System.getProperty(propName);

    65                 }

    66             });

    67     }

    68 

    69     FileInputStream getFileInputStream(final File file)

    70         throws FileNotFoundException

    71     {

    72         try {

    73             return (FileInputStream)

    74                 AccessController.doPrivileged(new PrivilegedExceptionAction() {

    75                     public Object run() throws FileNotFoundException {

    76                         return new FileInputStream(file);

    77                     }

    78                 });

    79         } catch (PrivilegedActionException e) {

    80             throw (FileNotFoundException)e.getException();

    81         }

    82     }

    83 

    84     InputStream getURLInputStream(final URL url)

    85         throws IOException

    86     {

    87         try {

    88             return (InputStream)

    89                 AccessController.doPrivileged(new PrivilegedExceptionAction() {

    90                     public Object run() throws IOException {

    91                         return url.openStream();

    92                     }

    93                 });

    94         } catch (PrivilegedActionException e) {

    95             throw (IOException)e.getException();

    96         }

    97     }

    98 

    99     URL getResourceAsURL(final ClassLoader cl,

   100                                            final String name)

   101     {

   102         return (URL)

   103             AccessController.doPrivileged(new PrivilegedAction() {

   104                 public Object run() {

   105                     URL url;

   106                     if (cl == null) {

   107                         url = ClassLoader.getSystemResource(name);

   108                     } else {

   109                         url = cl.getResource(name);

   110                     }

   111                     return url;

   112                 }

   113             });

   114     }

   115 

   116     Enumeration getResources(final ClassLoader cl,

   117                                            final String name) throws IOException

   118     {

   119         try{

   120         return (Enumeration)

   121             AccessController.doPrivileged(new PrivilegedExceptionAction() {

   122                 public Object run() throws IOException{

   123                     Enumeration enumeration;

   124                     if (cl == null) {

   125                         enumeration = ClassLoader.getSystemResources(name);

   126                     } else {

   127                         enumeration = cl.getResources(name);

   128                     }

   129                     return enumeration;

   130                 }

   131             });

   132         }catch(PrivilegedActionException e){

   133             throw (IOException)e.getException();

   134         }

   135     }

   136 

   137     InputStream getResourceAsStream(final ClassLoader cl,

   138                                            final String name)

   139     {

   140         return (InputStream)

   141             AccessController.doPrivileged(new PrivilegedAction() {

   142                 public Object run() {

   143                     InputStream ris;

   144                     if (cl == null) {

   145                         ris = ClassLoader.getSystemResourceAsStream(name);

   146                     } else {

   147                         ris = cl.getResourceAsStream(name);

   148                     }

   149                     return ris;

   150                 }

   151             });

   152     }

   153 

   154     boolean doesFileExist(final File f) {

   155     return ((Boolean)

   156             AccessController.doPrivileged(new PrivilegedAction() {

   157                 public Object run() {

   158                     return new Boolean(f.exists());

   159                 }

   160             })).booleanValue();

   161     }

   162 

   163 }