RenameClasses.java

package the.bytecode.club.bytecodeviewer.obfuscators.rename;

import org.objectweb.asm.Opcodes;
import org.objectweb.asm.tree.ClassNode;
import org.objectweb.asm.tree.MethodNode;
import the.bytecode.club.bytecodeviewer.BytecodeViewer;
import the.bytecode.club.bytecodeviewer.obfuscators.JavaObfuscator;
import the.bytecode.club.bytecodeviewer.obfuscators.mapping.data.MappingData;

/***************************************************************************
 * Bytecode Viewer (BCV) - Java & Android Reverse Engineering Suite        *
 * Copyright (C) 2014 Kalen 'Konloch' Kinloch - http://bytecodeviewer.com  *
 *                                                                         *
 * This program is free software: you can redistribute it and/or modify    *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation, either version 3 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
 ***************************************************************************/

/**
 * Rename classes.
 * 
 * @author Konloch
 *
 */

public class RenameClasses extends JavaObfuscator {

	@Override
	public void obfuscate() {
		int stringLength = 5;//getStringLength();

		System.out.println("Obfuscating class names...");
		classLoop: for (ClassNode c : BytecodeViewer.getLoadedClasses()) {
			
			/** As we dont want to rename classes that contain native dll methods */
			for (Object o : c.methods) {
				MethodNode m = (MethodNode) o;
				
				/** As we dont want to rename any  main-classes */
				if (m.name.equals("main") && m.desc.equals("([Ljava/lang/String;)V")
						|| m.name.equals("init") && c.superName.equals("java/applet/Applet"))
					continue classLoop;
				
				/* As we dont want to rename native dll methods */
				if ((m.access & Opcodes.ACC_NATIVE) != 0)
					continue classLoop;
			}
			
			String newName = generateUniqueName(stringLength);
			
			BytecodeViewer.refactorer.getHooks().addClass(new MappingData(c.name, newName));
			
			/*ASMUtil_OLD.renameClassNode(c.name, newName);
			c.name = newName;*/
		}

		System.out.println("Obfuscated class names.");
	}

}