1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 import org.apache.bcel.verifier.VerifierFactory;
18 import org.apache.bcel.verifier.Verifier;
19 import org.apache.bcel.verifier.VerificationResult;
20 import org.apache.bcel.classfile.JavaClass;
21 import org.apache.bcel.classfile.ClassParser;
22 import org.apache.bcel.Repository;
23
24 /**
25 * Reads a class file from stdin and runs BCEL Justice verifier.
26 *
27 * <p>
28 * This is supposed to help us by giving us where the generate byte code is wrong,
29 * but it turns out that this isn't as useful as I hoped for ...
30 *
31 * <h3>Usage</h3>
32 * <pre>
33 * $ cat Foo.class | java Justice
34 * </pre>
35 *
36 * @author Kohsuke Kawaguchi
37 */
38 public class Justice {
39 public static void main(String[] args) throws Exception {
40 ClassParser cp = new ClassParser(System.in,null);
41 JavaClass clazz = cp.parse();
42 Repository.addClass(clazz);
43 Verifier v = VerifierFactory.getVerifier(clazz.getClassName());
44
45 System.out.println("Pass 1");
46 report(v.doPass1());
47 System.out.println("Pass 2");
48 report(v.doPass2());
49 for( int i=0; i<clazz.getMethods().length; i++ ) {
50 String name = clazz.getMethods()[i].getName();
51 System.out.println("Pass 3a on "+name);
52 report(v.doPass3a(i));
53 System.out.println("Pass 3b on "+name);
54 report(v.doPass3b(i));
55 }
56 }
57
58 private static void report(VerificationResult r) {
59 System.out.println(r);
60 }
61 }