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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