/*
 * Java Payloads.
 * 
 * Copyright (c) 2011 Michael 'mihi' Schierl
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *   
 * - 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.
 *   
 * - Neither name of the copyright holders nor the names of its
 *   contributors may be used to endorse or promote products derived from
 *   this software without specific prior written permission.
 *   
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND THE CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS 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 COPYRIGHT
 * HOLDERS OR THE 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.
 */

package javapayload.builder;

import java.util.jar.Manifest;

import javapayload.loader.rmi.Loader;

import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;

public class RMIBuilder extends Builder {

	public RMIBuilder() {
		super("Generate a JAR containing RMI loader classes",
				"This builder is used to build a JAR containing RMI loader classes, which\r\n" +
						"is used by the RMI injector to inject payloads via a RMI port.");
	}

	public void build(String[] args) throws Exception {
		buildJar(args[0]);
	}

	public String getParameterSyntax() {
		return "<filename>.jar";
	}

	public static void buildJar(String filename) throws Exception {
		ClassWriter cw = new ClassWriter(0);
		cw.visit(Opcodes.V1_2, Opcodes.ACC_PUBLIC + Opcodes.ACC_SUPER, "javapayload/loader/rmi/LoaderImpl", null, "javapayload/loader/rmi/Loader", null);
		MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "<init>", "()V", null, null);
		mv.visitCode();
		mv.visitVarInsn(Opcodes.ALOAD, 0);
		mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "javapayload/loader/rmi/Loader", "<init>", "()V");
		mv.visitInsn(Opcodes.RETURN);
		mv.visitMaxs(1, 1);
		mv.visitEnd();
		cw.visitEnd();		
		JarBuilder.buildJar(filename, new Class[] {Loader.class}, false, false, new Manifest(), "javapayload/loader/rmi/LoaderImpl.class", cw.toByteArray());
	}
}