Fri, 24 Apr 2020 03:58:51 +0100
Merge
1 /*
2 * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
24 import java.io.IOException;
25 import java.io.InputStream;
26 import java.util.Enumeration;
27 import java.util.jar.JarEntry;
28 import java.util.jar.JarFile;
30 import com.sun.tools.classfile.AccessFlags;
31 import com.sun.tools.classfile.ClassFile;
32 import com.sun.tools.classfile.ConstantPoolException;
33 import com.sun.tools.classfile.Method;
34 import java.util.Comparator;
35 import java.util.Set;
36 import java.util.TreeSet;
38 public class FindNativeFiles {
39 public static void main(String[] args) throws IOException, ConstantPoolException {
40 new FindNativeFiles().run(args);
41 }
43 public void run(String[] args) throws IOException, ConstantPoolException {
44 JarFile jar = new JarFile(args[0]);
45 Set<JarEntry> entries = getNativeClasses(jar);
46 for (JarEntry e: entries) {
47 String name = e.getName();
48 String className = name.substring(0, name.length() - 6).replace("/", ".");
49 System.out.println(className);
50 }
51 }
53 Set<JarEntry> getNativeClasses(JarFile jar) throws IOException, ConstantPoolException {
54 Set<JarEntry> results = new TreeSet<JarEntry>(new Comparator<JarEntry>() {
55 public int compare(JarEntry o1, JarEntry o2) {
56 return o1.getName().compareTo(o2.getName());
57 }
58 });
59 Enumeration<JarEntry> e = jar.entries();
60 while (e.hasMoreElements()) {
61 JarEntry je = e.nextElement();
62 if (isNativeClass(jar, je))
63 results.add(je);
64 }
65 return results;
66 }
68 boolean isNativeClass(JarFile jar, JarEntry entry) throws IOException, ConstantPoolException {
69 String name = entry.getName();
70 if (name.startsWith("META-INF") || !name.endsWith(".class"))
71 return false;
72 //String className = name.substring(0, name.length() - 6).replace("/", ".");
73 //System.err.println("check " + className);
74 InputStream in = jar.getInputStream(entry);
75 ClassFile cf = ClassFile.read(in);
76 in.close();
77 for (int i = 0; i < cf.methods.length; i++) {
78 Method m = cf.methods[i];
79 if (m.access_flags.is(AccessFlags.ACC_NATIVE)) {
80 // System.err.println(className);
81 return true;
82 }
83 }
84 return false;
85 }
86 }