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289 lines
9.5 KiB
Java
289 lines
9.5 KiB
Java
package org.aspectj.apache.bcel.verifier;
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/* ====================================================================
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* The Apache Software License, Version 1.1
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*
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* Copyright (c) 2001 The Apache Software Foundation. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The end-user documentation included with the redistribution,
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* if any, must include the following acknowledgment:
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* "This product includes software developed by the
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* Apache Software Foundation (http://www.apache.org/)."
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* Alternately, this acknowledgment may appear in the software itself,
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* if and wherever such third-party acknowledgments normally appear.
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*
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* 4. The names "Apache" and "Apache Software Foundation" and
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* "Apache BCEL" must not be used to endorse or promote products
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* derived from this software without prior written permission. For
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* written permission, please contact apache@apache.org.
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*
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* 5. Products derived from this software may not be called "Apache",
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* "Apache BCEL", nor may "Apache" appear in their name, without
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* prior written permission of the Apache Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*/
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.Iterator;
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import org.aspectj.apache.bcel.classfile.JavaClass;
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import org.aspectj.apache.bcel.verifier.statics.Pass1Verifier;
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import org.aspectj.apache.bcel.verifier.statics.Pass2Verifier;
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import org.aspectj.apache.bcel.verifier.statics.Pass3aVerifier;
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import org.aspectj.apache.bcel.verifier.structurals.Pass3bVerifier;
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/**
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* A Verifier instance is there to verify a class file according to The Java Virtual
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* Machine Specification, 2nd Edition.
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*
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* Pass-3b-verification includes pass-3a-verification;
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* pass-3a-verification includes pass-2-verification;
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* pass-2-verification includes pass-1-verification.
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*
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* A Verifier creates PassVerifier instances to perform the actual verification.
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* Verifier instances are usually generated by the VerifierFactory.
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*
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* @version $Id: Verifier.java,v 1.2 2008/05/28 23:53:01 aclement Exp $
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* @author <A HREF="http://www.inf.fu-berlin.de/~ehaase"/>Enver Haase</A>
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* @see org.aspectj.apache.bcel.verifier.VerifierFactory
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* @see org.aspectj.apache.bcel.verifier.PassVerifier
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*/
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public class Verifier{
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/**
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* The name of the class this verifier operates on.
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*/
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private final String classname;
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/** A Pass1Verifier for this Verifier instance. */
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private Pass1Verifier p1v;
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/** A Pass2Verifier for this Verifier instance. */
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private Pass2Verifier p2v;
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/** The Pass3aVerifiers for this Verifier instance. Key: Interned string specifying the method number. */
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private HashMap p3avs = new HashMap();
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/** The Pass3bVerifiers for this Verifier instance. Key: Interned string specifying the method number. */
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private HashMap p3bvs = new HashMap();
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/** Returns the VerificationResult for the given pass. */
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public VerificationResult doPass1(){
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if (p1v == null){
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p1v = new Pass1Verifier(this);
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}
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return p1v.verify();
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}
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/** Returns the VerificationResult for the given pass. */
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public VerificationResult doPass2(){
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if (p2v == null){
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p2v = new Pass2Verifier(this);
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}
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return p2v.verify();
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}
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/** Returns the VerificationResult for the given pass. */
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public VerificationResult doPass3a(int method_no){
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String key = Integer.toString(method_no);
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Pass3aVerifier p3av;
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p3av = (Pass3aVerifier) (p3avs.get(key));
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if (p3avs.get(key) == null){
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p3av = new Pass3aVerifier(this, method_no);
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p3avs.put(key, p3av);
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}
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return p3av.verify();
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}
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/** Returns the VerificationResult for the given pass. */
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public VerificationResult doPass3b(int method_no){
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String key = Integer.toString(method_no);
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Pass3bVerifier p3bv;
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p3bv = (Pass3bVerifier) (p3bvs.get(key));
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if (p3bvs.get(key) == null){
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p3bv = new Pass3bVerifier(this, method_no);
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p3bvs.put(key, p3bv);
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}
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return p3bv.verify();
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}
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/**
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* Instantiation is done by the VerifierFactory.
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*
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* @see VerifierFactory
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*/
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Verifier(String fully_qualified_classname){
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classname = fully_qualified_classname;
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flush();
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}
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/**
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* Returns the name of the class this verifier operates on.
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* This is particularly interesting when this verifier was created
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* recursively by another Verifier and you got a reference to this
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* Verifier by the getVerifiers() method of the VerifierFactory.
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* @see VerifierFactory
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*/
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public final String getClassName(){
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return classname;
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}
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/**
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* Forget everything known about the class file; that means, really
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* start a new verification of a possibly different class file from
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* BCEL's repository.
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*
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*/
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public void flush(){
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p1v = null;
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p2v = null;
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p3avs.clear();
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p3bvs.clear();
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}
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/**
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* This returns all the (warning) messages collected during verification.
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* A prefix shows from which verifying pass a message originates.
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*/
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public String[] getMessages(){
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ArrayList messages = new ArrayList();
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if (p1v != null){
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String[] p1m = p1v.getMessages();
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for (int i=0; i<p1m.length; i++){
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messages.add("Pass 1: "+p1m[i]);
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}
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}
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if (p2v != null){
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String[] p2m = p2v.getMessages();
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for (int i=0; i<p2m.length; i++){
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messages.add("Pass 2: "+p2m[i]);
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}
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}
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Iterator p3as = p3avs.values().iterator();
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while (p3as.hasNext()){
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Pass3aVerifier pv = (Pass3aVerifier) p3as.next();
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String[] p3am = pv.getMessages();
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int meth = pv.getMethodNo();
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for (int i=0; i<p3am.length; i++){
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messages.add("Pass 3a, method "+meth+
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" ('"+
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org.aspectj.apache.bcel.Repository
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.lookupClass(classname)
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.getMethods()[meth] +
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"'): "+p3am[i]);
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}
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}
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Iterator p3bs = p3bvs.values().iterator();
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while (p3bs.hasNext()){
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Pass3bVerifier pv = (Pass3bVerifier) p3bs.next();
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String[] p3bm = pv.getMessages();
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int meth = pv.getMethodNo();
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for (int i=0; i<p3bm.length; i++){
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messages.add("Pass 3b, method "+meth+
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" ('"+
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org.aspectj.apache.bcel.Repository.
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lookupClass(classname).
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getMethods()[meth] +
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"'): "+p3bm[i]);
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}
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}
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String[] ret = new String[messages.size()];
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for (int i=0; i< messages.size(); i++){
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ret[i] = (String) messages.get(i);
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}
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return ret;
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}
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/**
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* Verifies class files.
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* This is a simple demonstration of how the API of BCEL's
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* class file verifier "JustIce" may be used.
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* You should supply command-line arguments which are
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* fully qualified namea of the classes to verify. These class files
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* must be somewhere in your CLASSPATH (refer to Sun's
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* documentation for questions about this) or you must have put the classes
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* into the BCEL Repository yourself (via 'addClass(JavaClass)').
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*/
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public static void main(String [] args){
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System.out.println("JustIce by Enver Haase, (C) 2001-2002.\n<http://bcel.sourceforge.net>\n<http://jakarta.apache.org/bcel>\n");
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for(int k=0; k < args.length; k++) {
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if (args[k].endsWith(".class")){
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int dotclasspos = args[k].lastIndexOf(".class");
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if (dotclasspos != -1) args[k] = args[k].substring(0,dotclasspos);
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}
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args[k] = args[k].replace('/', '.');
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System.out.println("Now verifying: "+args[k]+"\n");
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Verifier v = VerifierFactory.getVerifier(args[k]);
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VerificationResult vr;
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vr = v.doPass1();
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System.out.println("Pass 1:\n"+vr);
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vr = v.doPass2();
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System.out.println("Pass 2:\n"+vr);
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if (vr == VerificationResult.VR_OK){
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JavaClass jc = org.aspectj.apache.bcel.Repository
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.lookupClass(args[k]);
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for (int i=0; i<jc.getMethods().length; i++){
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vr = v.doPass3a(i);
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System.out.println("Pass 3a, method number "+i+" ['"+jc.getMethods()[i]+"']:\n"+vr);
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vr = v.doPass3b(i);
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System.out.println("Pass 3b, method number "+i+" ['"+jc.getMethods()[i]+"']:\n"+vr);
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}
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}
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System.out.println("Warnings:");
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String[] warnings = v.getMessages();
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if (warnings.length == 0) System.out.println("<none>");
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for (int j=0; j<warnings.length; j++){
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System.out.println(warnings[j]);
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}
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System.out.println("\n");
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// avoid swapping.
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v.flush();
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org.aspectj.apache.bcel.Repository.clearCache();
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System.gc();
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}
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}
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}
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