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1 package org.apache.bcel.verifier; 2 3 /* ==================================================================== 4 * The Apache Software License, Version 1.1 5 * 6 * Copyright (c) 2001 The Apache Software Foundation. All rights 7 * reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. The end-user documentation included with the redistribution, 22 * if any, must include the following acknowledgment: 23 * "This product includes software developed by the 24 * Apache Software Foundation (http://www.apache.org/)." 25 * Alternately, this acknowledgment may appear in the software itself, 26 * if and wherever such third-party acknowledgments normally appear. 27 * 28 * 4. The names "Apache" and "Apache Software Foundation" and 29 * "Apache BCEL" must not be used to endorse or promote products 30 * derived from this software without prior written permission. For 31 * written permission, please contact apache@apache.org. 32 * 33 * 5. Products derived from this software may not be called "Apache", 34 * "Apache BCEL", nor may "Apache" appear in their name, without 35 * prior written permission of the Apache Software Foundation. 36 * 37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 40 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 41 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 43 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 44 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 45 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 46 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 47 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 48 * SUCH DAMAGE. 49 * ==================================================================== 50 * 51 * This software consists of voluntary contributions made by many 52 * individuals on behalf of the Apache Software Foundation. For more 53 * information on the Apache Software Foundation, please see 54 * <http://www.apache.org/>;. 55 */ 56 57 import org.apache.bcel.verifier.*; 58 import org.apache.bcel.classfile.*; 59 import org.apache.bcel.*; 60 61 /*** 62 * This class has a main method implementing a demonstration program 63 * of how to use the VerifierFactoryObserver. It transitively verifies 64 * all class files encountered; this may take up a lot of time and, 65 * more notably, memory. 66 * 67 * @version $Id: TransitiveHull.java,v 1.1.1.1 2001/10/29 20:00:31 jvanzyl Exp $ 68 * @author <A HREF="http://www.inf.fu-berlin.de/~ehaase"/>Enver Haase</A> 69 */ 70 public class TransitiveHull implements VerifierFactoryObserver{ 71 72 /*** Used for indentation. */ 73 private int indent = 0; 74 75 /*** Not publicly instantiable. */ 76 private TransitiveHull(){ 77 } 78 79 /* Implementing VerifierFactoryObserver. */ 80 public void update(String classname){ 81 82 System.gc(); // avoid swapping if possible. 83 84 for (int i=0; i<indent; i++){ 85 System.out.print(" "); 86 } 87 System.out.println(classname); 88 indent += 1; 89 90 Verifier v = VerifierFactory.getVerifier(classname); 91 92 VerificationResult vr; 93 vr = v.doPass1(); 94 if (vr != VerificationResult.VR_OK) //System.exit(1); 95 System.out.println("Pass 1:\n"+vr); 96 97 vr = v.doPass2(); 98 if (vr != VerificationResult.VR_OK) //System.exit(1); 99 System.out.println("Pass 2:\n"+vr); 100 101 if (vr == VerificationResult.VR_OK){ 102 JavaClass jc = Repository.lookupClass(v.getClassName()); 103 for (int i=0; i<jc.getMethods().length; i++){ 104 vr = v.doPass3a(i); 105 if (vr != VerificationResult.VR_OK) //System.exit(1); 106 System.out.println(v.getClassName()+", Pass 3a, method "+i+" ['"+jc.getMethods()[i]+"']:\n"+vr); 107 108 vr = v.doPass3b(i); 109 if (vr != VerificationResult.VR_OK) //System.exit(1); 110 System.out.println(v.getClassName()+", Pass 3b, method "+i+" ['"+jc.getMethods()[i]+"']:\n"+vr); 111 } 112 } 113 114 indent -= 1; 115 } 116 117 /*** 118 * This method implements a demonstration program 119 * of how to use the VerifierFactoryObserver. It transitively verifies 120 * all class files encountered; this may take up a lot of time and, 121 * more notably, memory. 122 */ 123 public static void main(String[] args){ 124 if (args.length != 1){ 125 System.out.println("Need exactly one argument: The root class to verify."); 126 System.exit(1); 127 } 128 129 int dotclasspos = args[0].lastIndexOf(".class"); 130 if (dotclasspos != -1) args[0] = args[0].substring(0,dotclasspos); 131 args[0] = args[0].replace('/', '.'); 132 133 TransitiveHull th = new TransitiveHull(); 134 VerifierFactory.attach(th); 135 VerifierFactory.getVerifier(args[0]); // the observer is called back and does the actual trick. 136 VerifierFactory.detach(th); 137 } 138 }

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