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- package org.aspectj.apache.bcel.verifier;
-
- /* ====================================================================
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 2001 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Apache" and "Apache Software Foundation" and
- * "Apache BCEL" must not be used to endorse or promote products
- * derived from this software without prior written permission. For
- * written permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * "Apache BCEL", nor may "Apache" appear in their name, without
- * prior written permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
-
- import java.util.ArrayList;
- import java.util.HashMap;
- import java.util.Iterator;
-
- import org.aspectj.apache.bcel.classfile.JavaClass;
- import org.aspectj.apache.bcel.verifier.statics.Pass1Verifier;
- import org.aspectj.apache.bcel.verifier.statics.Pass2Verifier;
- import org.aspectj.apache.bcel.verifier.statics.Pass3aVerifier;
- import org.aspectj.apache.bcel.verifier.structurals.Pass3bVerifier;
-
- /**
- * A Verifier instance is there to verify a class file according to The Java Virtual
- * Machine Specification, 2nd Edition.
- *
- * Pass-3b-verification includes pass-3a-verification;
- * pass-3a-verification includes pass-2-verification;
- * pass-2-verification includes pass-1-verification.
- *
- * A Verifier creates PassVerifier instances to perform the actual verification.
- * Verifier instances are usually generated by the VerifierFactory.
- *
- * @version $Id: Verifier.java,v 1.3 2009/09/09 19:56:20 aclement Exp $
- * @author <A HREF="http://www.inf.fu-berlin.de/~ehaase"/>Enver Haase</A>
- * @see org.aspectj.apache.bcel.verifier.VerifierFactory
- * @see org.aspectj.apache.bcel.verifier.PassVerifier
- */
- public class Verifier{
- /**
- * The name of the class this verifier operates on.
- */
- private final String classname;
-
- /** A Pass1Verifier for this Verifier instance. */
- private Pass1Verifier p1v;
- /** A Pass2Verifier for this Verifier instance. */
- private Pass2Verifier p2v;
- /** The Pass3aVerifiers for this Verifier instance. Key: Interned string specifying the method number. */
- private HashMap<String, Pass3aVerifier> p3avs = new HashMap<String, Pass3aVerifier>();
- /** The Pass3bVerifiers for this Verifier instance. Key: Interned string specifying the method number. */
- private HashMap<String, Pass3bVerifier> p3bvs = new HashMap<String, Pass3bVerifier>();
-
- /** Returns the VerificationResult for the given pass. */
- public VerificationResult doPass1(){
- if (p1v == null){
- p1v = new Pass1Verifier(this);
- }
- return p1v.verify();
- }
-
- /** Returns the VerificationResult for the given pass. */
- public VerificationResult doPass2(){
- if (p2v == null){
- p2v = new Pass2Verifier(this);
- }
- return p2v.verify();
- }
-
- /** Returns the VerificationResult for the given pass. */
- public VerificationResult doPass3a(int method_no){
- String key = Integer.toString(method_no);
- Pass3aVerifier p3av;
- p3av = (p3avs.get(key));
- if (p3avs.get(key) == null){
- p3av = new Pass3aVerifier(this, method_no);
- p3avs.put(key, p3av);
- }
- return p3av.verify();
- }
-
- /** Returns the VerificationResult for the given pass. */
- public VerificationResult doPass3b(int method_no){
- String key = Integer.toString(method_no);
- Pass3bVerifier p3bv;
- p3bv = (p3bvs.get(key));
- if (p3bvs.get(key) == null){
- p3bv = new Pass3bVerifier(this, method_no);
- p3bvs.put(key, p3bv);
- }
- return p3bv.verify();
- }
-
-
- /**
- * Instantiation is done by the VerifierFactory.
- *
- * @see VerifierFactory
- */
- Verifier(String fully_qualified_classname){
- classname = fully_qualified_classname;
- flush();
- }
-
- /**
- * Returns the name of the class this verifier operates on.
- * This is particularly interesting when this verifier was created
- * recursively by another Verifier and you got a reference to this
- * Verifier by the getVerifiers() method of the VerifierFactory.
- * @see VerifierFactory
- */
- public final String getClassName(){
- return classname;
- }
-
- /**
- * Forget everything known about the class file; that means, really
- * start a new verification of a possibly different class file from
- * BCEL's repository.
- *
- */
- public void flush(){
- p1v = null;
- p2v = null;
- p3avs.clear();
- p3bvs.clear();
- }
-
- /**
- * This returns all the (warning) messages collected during verification.
- * A prefix shows from which verifying pass a message originates.
- */
- public String[] getMessages(){
- ArrayList messages = new ArrayList();
-
- if (p1v != null){
- String[] p1m = p1v.getMessages();
- for (int i=0; i<p1m.length; i++){
- messages.add("Pass 1: "+p1m[i]);
- }
- }
- if (p2v != null){
- String[] p2m = p2v.getMessages();
- for (int i=0; i<p2m.length; i++){
- messages.add("Pass 2: "+p2m[i]);
- }
- }
- Iterator<Pass3aVerifier> p3as = p3avs.values().iterator();
- while (p3as.hasNext()){
- Pass3aVerifier pv = p3as.next();
- String[] p3am = pv.getMessages();
- int meth = pv.getMethodNo();
- for (int i=0; i<p3am.length; i++){
- messages.add("Pass 3a, method "+meth+
- " ('"+
- org.aspectj.apache.bcel.Repository
- .lookupClass(classname)
- .getMethods()[meth] +
- "'): "+p3am[i]);
- }
- }
- Iterator<Pass3bVerifier> p3bs = p3bvs.values().iterator();
- while (p3bs.hasNext()){
- Pass3bVerifier pv = p3bs.next();
- String[] p3bm = pv.getMessages();
- int meth = pv.getMethodNo();
- for (int i=0; i<p3bm.length; i++){
- messages.add("Pass 3b, method "+meth+
- " ('"+
- org.aspectj.apache.bcel.Repository.
- lookupClass(classname).
- getMethods()[meth] +
- "'): "+p3bm[i]);
- }
- }
-
- String[] ret = new String[messages.size()];
- for (int i=0; i< messages.size(); i++){
- ret[i] = (String) messages.get(i);
- }
-
- return ret;
- }
-
- /**
- * Verifies class files.
- * This is a simple demonstration of how the API of BCEL's
- * class file verifier "JustIce" may be used.
- * You should supply command-line arguments which are
- * fully qualified namea of the classes to verify. These class files
- * must be somewhere in your CLASSPATH (refer to Sun's
- * documentation for questions about this) or you must have put the classes
- * into the BCEL Repository yourself (via 'addClass(JavaClass)').
- */
- public static void main(String [] args){
- System.out.println("JustIce by Enver Haase, (C) 2001-2002.\n<http://bcel.sourceforge.net>\n<http://jakarta.apache.org/bcel>\n");
- for(int k=0; k < args.length; k++) {
-
- if (args[k].endsWith(".class")){
- int dotclasspos = args[k].lastIndexOf(".class");
- if (dotclasspos != -1) args[k] = args[k].substring(0,dotclasspos);
- }
-
- args[k] = args[k].replace('/', '.');
-
- System.out.println("Now verifying: "+args[k]+"\n");
-
- Verifier v = VerifierFactory.getVerifier(args[k]);
- VerificationResult vr;
-
- vr = v.doPass1();
- System.out.println("Pass 1:\n"+vr);
-
- vr = v.doPass2();
- System.out.println("Pass 2:\n"+vr);
-
- if (vr == VerificationResult.VR_OK){
- JavaClass jc = org.aspectj.apache.bcel.Repository
- .lookupClass(args[k]);
- for (int i=0; i<jc.getMethods().length; i++){
- vr = v.doPass3a(i);
- System.out.println("Pass 3a, method number "+i+" ['"+jc.getMethods()[i]+"']:\n"+vr);
-
- vr = v.doPass3b(i);
- System.out.println("Pass 3b, method number "+i+" ['"+jc.getMethods()[i]+"']:\n"+vr);
- }
- }
-
- System.out.println("Warnings:");
- String[] warnings = v.getMessages();
- if (warnings.length == 0) System.out.println("<none>");
- for (int j=0; j<warnings.length; j++){
- System.out.println(warnings[j]);
- }
-
- System.out.println("\n");
-
- // avoid swapping.
- v.flush();
- org.aspectj.apache.bcel.Repository.clearCache();
- System.gc();
- }
- }
- }
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