1 /* |
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2 * Copyright (c) 2005, 2015, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 package javax.xml.xpath; |
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27 |
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28 import java.net.URL; |
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29 import java.security.*; |
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30 import java.io.*; |
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31 |
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32 /** |
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33 * This class is duplicated for each JAXP subpackage so keep it in sync. |
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34 * It is package private and therefore is not exposed as part of the JAXP |
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35 * API. |
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36 * |
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37 * Security related methods that only work on J2SE 1.2 and newer. |
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38 */ |
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39 class SecuritySupport { |
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40 |
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41 |
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42 ClassLoader getContextClassLoader() { |
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43 return AccessController.doPrivileged(new PrivilegedAction<>() { |
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44 @Override |
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45 public ClassLoader run() { |
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46 ClassLoader cl = null; |
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47 try { |
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48 cl = Thread.currentThread().getContextClassLoader(); |
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49 } catch (SecurityException ex) { } |
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50 return cl; |
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51 } |
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52 }); |
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53 } |
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54 |
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55 String getSystemProperty(final String propName) { |
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56 return AccessController.doPrivileged(new PrivilegedAction<>() { |
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57 @Override |
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58 public String run() { |
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59 return System.getProperty(propName); |
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60 } |
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61 }); |
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62 } |
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63 |
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64 FileInputStream getFileInputStream(final File file) |
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65 throws FileNotFoundException |
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66 { |
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67 try { |
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68 return AccessController.doPrivileged( |
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69 new PrivilegedExceptionAction<>() { |
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70 @Override |
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71 public FileInputStream run() throws FileNotFoundException { |
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72 return new FileInputStream(file); |
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73 } |
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74 }); |
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75 } catch (PrivilegedActionException e) { |
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76 throw (FileNotFoundException)e.getException(); |
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77 } |
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78 } |
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79 |
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80 // Used for debugging purposes |
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81 String getClassSource(Class<?> cls) { |
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82 return AccessController.doPrivileged(new PrivilegedAction<>() { |
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83 @Override |
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84 public String run() { |
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85 CodeSource cs = cls.getProtectionDomain().getCodeSource(); |
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86 if (cs != null) { |
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87 URL loc = cs.getLocation(); |
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88 return loc != null ? loc.toString() : "(no location)"; |
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89 } else { |
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90 return "(no code source)"; |
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91 } |
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92 } |
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93 }); |
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94 } |
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95 |
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96 boolean doesFileExist(final File f) { |
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97 return AccessController.doPrivileged(new PrivilegedAction<>() { |
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98 @Override |
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99 public Boolean run() { |
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100 return f.exists(); |
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101 } |
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102 }); |
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103 } |
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104 |
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105 } |
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