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  /***
58   * The NativeVerifier class implements a main(String[] args) method that's
59   * roughly compatible to the one in the Verifier class, but that uses the
60   * JVM's internal verifier for its class file verification.
61   * This can be used for comparison runs between the JVM-internal verifier
62   * and JustIce.
63   *
64   * @version $Id: NativeVerifier.java,v 1.1.1.1 2001/10/29 20:00:31 jvanzyl Exp $
65   * @author <A HREF="http://www.inf.fu-berlin.de/~ehaase"/>Enver Haase</A>
66   */
67  public abstract class NativeVerifier{
68  
69  	/***
70  	 * This class must not be instantiated.
71  	 */
72  	private NativeVerifier(){
73  	}
74  	
75  	/***
76  	 * Works only on the first argument.
77  	 */
78  	public static void main(String [] args){
79  		if (args.length != 1){
80  			System.out.println("Verifier front-end: need exactly one argument.");
81  			System.exit(1);
82  		}
83  
84  		int dotclasspos = args[0].lastIndexOf(".class");
85  		if (dotclasspos != -1) args[0] = args[0].substring(0,dotclasspos);
86  		args[0] = args[0].replace('/','.');
87  		//System.out.println(args[0]);
88  
89  		
90  		try{
91  			Class.forName(args[0]);
92  		}
93  		catch(ExceptionInInitializerError eiie){ //subclass of LinkageError!
94  			System.out.println("NativeVerifier: ExceptionInInitializerError encountered on '"+args[0]+"'.");
95  			System.out.println(eiie);
96  			System.exit(1);		
97  		}
98  		catch(LinkageError le){
99  			System.out.println("NativeVerifier: LinkageError encountered on '"+args[0]+"'.");
100 			System.out.println(le);
101 			System.exit(1);
102 		}
103 		catch(ClassNotFoundException cnfe){
104 			System.out.println("NativeVerifier: FILE NOT FOUND: '"+args[0]+"'.");
105 			System.exit(1);
106 		}
107 		catch(Throwable t){
108 			System.out.println("NativeVerifier: Unspecified verification error on'"+args[0]+"'.");
109 			System.exit(1);
110 		}
111 		
112 		System.out.println("NativeVerifier: Class file '"+args[0]+"' seems to be okay.");
113 		System.exit(0);
114 
115 	}
116 }
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