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1 /* |
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2 * Copyright (c) 2008, 2010, 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 com.sun.xml.internal.ws.model; |
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27 |
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28 import javax.xml.ws.WebServiceException; |
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29 import java.lang.reflect.InvocationTargetException; |
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30 import java.lang.reflect.Method; |
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31 import java.net.URL; |
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32 import java.security.AccessController; |
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33 import java.security.PrivilegedAction; |
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34 import java.util.logging.Level; |
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35 import java.util.logging.Logger; |
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36 |
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37 /** |
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38 * A {@link ClassLoader} used to "inject" wrapper and exception bean classes |
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39 * into the VM. |
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40 * |
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41 * @author Jitendra kotamraju |
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42 */ |
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43 final class Injector { |
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44 |
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45 private static final Logger LOGGER = Logger.getLogger(Injector.class.getName()); |
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46 |
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47 private static final Method defineClass; |
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48 private static final Method resolveClass; |
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49 private static final Method getPackage; |
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50 private static final Method definePackage; |
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51 |
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52 static { |
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53 try { |
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54 defineClass = ClassLoader.class.getDeclaredMethod("defineClass",String.class,byte[].class,Integer.TYPE,Integer.TYPE); |
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55 resolveClass = ClassLoader.class.getDeclaredMethod("resolveClass",Class.class); |
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56 getPackage = ClassLoader.class.getDeclaredMethod("getPackage", String.class); |
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57 definePackage = ClassLoader.class.getDeclaredMethod("definePackage", |
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58 String.class, String.class, String.class, String.class, |
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59 String.class, String.class, String.class, URL.class); |
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60 } catch (NoSuchMethodException e) { |
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61 // impossible |
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62 throw new NoSuchMethodError(e.getMessage()); |
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63 } |
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64 AccessController.doPrivileged(new PrivilegedAction<Void>() { |
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65 public Void run() { |
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66 // TODO: check security implication |
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67 // do these setAccessible allow anyone to call these methods freely?s |
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68 defineClass.setAccessible(true); |
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69 resolveClass.setAccessible(true); |
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70 getPackage.setAccessible(true); |
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71 definePackage.setAccessible(true); |
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72 return null; |
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73 } |
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74 }); |
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75 } |
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76 |
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77 static synchronized Class inject(ClassLoader cl, String className, byte[] image) { |
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78 // To avoid race conditions let us check if the classloader |
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79 // already contains the class |
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80 try { |
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81 return cl.loadClass(className); |
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82 } catch (ClassNotFoundException e) { |
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83 // nothing to do |
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84 } |
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85 try { |
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86 int packIndex = className.lastIndexOf('.'); |
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87 if (packIndex != -1) { |
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88 String pkgname = className.substring(0, packIndex); |
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89 // Check if package already loaded. |
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90 Package pkg = (Package)getPackage.invoke(cl, pkgname); |
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91 if (pkg == null) { |
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92 definePackage.invoke(cl, pkgname, null, null, null, null, null, null, null); |
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93 } |
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94 } |
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95 |
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96 Class c = (Class)defineClass.invoke(cl,className.replace('/','.'),image,0,image.length); |
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97 resolveClass.invoke(cl, c); |
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98 return c; |
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99 } catch (IllegalAccessException e) { |
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100 LOGGER.log(Level.FINE,"Unable to inject "+className,e); |
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101 throw new WebServiceException(e); |
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102 } catch (InvocationTargetException e) { |
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103 LOGGER.log(Level.FINE,"Unable to inject "+className,e); |
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104 throw new WebServiceException(e); |
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105 } |
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106 } |
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107 |
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108 } |