the.bytecode.club.bytecodeviewer.compilers.KrakatauAssembler.java Source code

Introduction

Here is the source code for the.bytecode.club.bytecodeviewer.compilers.KrakatauAssembler.java

Source

package the.bytecode.club.bytecodeviewer.compilers;

import org.apache.commons.io.FileUtils;
import the.bytecode.club.bytecodeviewer.BytecodeViewer;
import the.bytecode.club.bytecodeviewer.JarUtils;
import the.bytecode.club.bytecodeviewer.MiscUtils;
import the.bytecode.club.bytecodeviewer.Settings;

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

/***************************************************************************
 * 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/>. *
 ***************************************************************************/

/**
 * Krakatau Java assembler, requires Python 2.7
 * 
 * @author Konloch
 *
 */
public class KrakatauAssembler extends Compiler {

    @Override
    public byte[] compile(String contents, String name) {
        if (Settings.PYTHON2_LOCATION.isEmpty()) {
            BytecodeViewer.showMessage("You need to set your Python (or PyPy for speed) 2.7 executable path.");
            BytecodeViewer.viewer.pythonC();
        }

        if (Settings.PYTHON2_LOCATION.isEmpty()) {
            BytecodeViewer.showMessage("You need to set Python!");
            return null;
        }

        String origName = name;
        name = MiscUtils.randomString(20);

        File tempD = new File(BytecodeViewer.tempDir,
                BytecodeViewer.fs + MiscUtils.randomString(32) + BytecodeViewer.fs);
        tempD.mkdir();

        File tempJ = new File(tempD.getAbsolutePath() + BytecodeViewer.fs + name + ".j");
        try {
            FileUtils.write(tempJ, contents, "UTF-8", false);
        } catch (IOException e) {
            e.printStackTrace();
        }

        final File tempDirectory = new File(BytecodeViewer.tempDir,
                BytecodeViewer.fs + MiscUtils.randomString(32) + BytecodeViewer.fs);
        tempDirectory.mkdir();
        final File tempJar = new File(BytecodeViewer.tempDir,
                BytecodeViewer.fs + "temp" + MiscUtils.randomString(32) + ".jar");
        JarUtils.saveAsJar(BytecodeViewer.getLoadedBytes(), tempJar.getAbsolutePath());

        BytecodeViewer.sm.stopBlocking();
        String log = "";
        try {
            ProcessBuilder pb = new ProcessBuilder(Settings.PYTHON2_LOCATION.get(), "-O", //love you storyyeller <3
                    BytecodeViewer.krakatauDirectory.getAbsolutePath() + BytecodeViewer.fs + "assemble.py", "-out",
                    tempDirectory.getAbsolutePath(), tempJ.getAbsolutePath());

            Process process = pb.start();
            BytecodeViewer.createdProcesses.add(process);

            //Read out dir output
            InputStream is = process.getInputStream();
            InputStreamReader isr = new InputStreamReader(is);
            BufferedReader br = new BufferedReader(isr);
            String line;
            while ((line = br.readLine()) != null) {
                log += BytecodeViewer.nl + line;
            }
            br.close();

            log += BytecodeViewer.nl + BytecodeViewer.nl + "Error:" + BytecodeViewer.nl + BytecodeViewer.nl;
            is = process.getErrorStream();
            isr = new InputStreamReader(is);
            br = new BufferedReader(isr);
            while ((line = br.readLine()) != null) {
                log += BytecodeViewer.nl + line;
            }
            br.close();

            int exitValue = process.waitFor();
            log += BytecodeViewer.nl + BytecodeViewer.nl + "Exit Value is " + exitValue;
            System.out.println(log);

            byte[] b = org.apache.commons.io.FileUtils.readFileToByteArray(
                    new File(tempDirectory.getAbsolutePath() + BytecodeViewer.fs + origName + ".class"));
            tempDirectory.delete();
            tempJar.delete();
            return b;
        } catch (Exception e) {
            e.printStackTrace();
            new the.bytecode.club.bytecodeviewer.api.ExceptionUI(log);
        } finally {
            BytecodeViewer.sm.setBlocking();
        }

        return null;
    }

}