xml/validation/SecuritySupport.java

0N/A/*
2362N/A * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation.  Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
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2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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0N/A */
0N/A
0N/Apackage javax.xml.validation;
0N/A
0N/Aimport java.io.IOException;
0N/Aimport java.net.URL;
0N/Aimport java.security.*;
0N/Aimport java.net.*;
0N/Aimport java.io.*;
0N/Aimport java.util.*;
0N/A
0N/A/**
0N/A * This class is duplicated for each JAXP subpackage so keep it in sync.
0N/A * It is package private and therefore is not exposed as part of the JAXP
0N/A * API.
658N/A *
658N/A * Security related methods that only work on J2SE 1.2 and newer.
0N/A */
0N/Aclass SecuritySupport  {
0N/A
0N/A
0N/A    ClassLoader getContextClassLoader() {
0N/A        return (ClassLoader)
0N/A        AccessController.doPrivileged(new PrivilegedAction() {
0N/A            public Object run() {
0N/A                ClassLoader cl = null;
0N/A                //try {
0N/A                cl = Thread.currentThread().getContextClassLoader();
0N/A                //} catch (SecurityException ex) { }
0N/A                if (cl == null)
0N/A                    cl = ClassLoader.getSystemClassLoader();
0N/A                return cl;
0N/A            }
        });
    }

    String getSystemProperty(final String propName) {
        return (String)
            AccessController.doPrivileged(new PrivilegedAction() {
                public Object run() {
                    return System.getProperty(propName);
                }
            });
    }

    FileInputStream getFileInputStream(final File file)
        throws FileNotFoundException
    {
        try {
            return (FileInputStream)
                AccessController.doPrivileged(new PrivilegedExceptionAction() {
                    public Object run() throws FileNotFoundException {
                        return new FileInputStream(file);
                    }
                });
        } catch (PrivilegedActionException e) {
            throw (FileNotFoundException)e.getException();
        }
    }

    InputStream getURLInputStream(final URL url)
        throws IOException
    {
        try {
            return (InputStream)
                AccessController.doPrivileged(new PrivilegedExceptionAction() {
                    public Object run() throws IOException {
                        return url.openStream();
                    }
                });
        } catch (PrivilegedActionException e) {
            throw (IOException)e.getException();
        }
    }

    URL getResourceAsURL(final ClassLoader cl,
                                           final String name)
    {
        return (URL)
            AccessController.doPrivileged(new PrivilegedAction() {
                public Object run() {
                    URL url;
                    if (cl == null) {
                        url = Object.class.getResource(name);
                    } else {
                        url = cl.getResource(name);
                    }
                    return url;
                }
            });
    }

    Enumeration getResources(final ClassLoader cl,
                                           final String name) throws IOException
    {
        try{
        return (Enumeration)
            AccessController.doPrivileged(new PrivilegedExceptionAction() {
                public Object run() throws IOException{
                    Enumeration enumeration;
                    if (cl == null) {
                        enumeration = ClassLoader.getSystemResources(name);
                    } else {
                        enumeration = cl.getResources(name);
                    }
                    return enumeration;
                }
            });
        }catch(PrivilegedActionException e){
            throw (IOException)e.getException();
        }
    }

    InputStream getResourceAsStream(final ClassLoader cl,
                                           final String name)
    {
        return (InputStream)
            AccessController.doPrivileged(new PrivilegedAction() {
                public Object run() {
                    InputStream ris;
                    if (cl == null) {
                        ris = Object.class.getResourceAsStream(name);
                    } else {
                        ris = cl.getResourceAsStream(name);
                    }
                    return ris;
                }
            });
    }

    boolean doesFileExist(final File f) {
    return ((Boolean)
            AccessController.doPrivileged(new PrivilegedAction() {
                public Object run() {
                    return new Boolean(f.exists());
                }
            })).booleanValue();
    }

}