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path: root/src/main/java/gq/malwarefight/nosession/NoSessionLoadingPlugin.java
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package gq.malwarefight.nosession;

import gq.malwarefight.nosession.relaunch.Relaunch;
import gq.malwarefight.nosession.tweaks.initial.InitialTweaker;
import gq.malwarefight.nosession.utils.Utils;
import java.util.HashMap;
import java.util.Map.Entry;
import net.minecraft.launchwrapper.Launch;
import net.minecraftforge.fml.relauncher.IFMLLoadingPlugin;

import java.io.IOException;
import java.lang.management.ManagementFactory;
import java.lang.management.RuntimeMXBean;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Map;
import java.util.Properties;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

@IFMLLoadingPlugin.MCVersion("1.8.9")
@IFMLLoadingPlugin.Name("NoSession trolling")
@IFMLLoadingPlugin.SortingIndex(0)
public class NoSessionLoadingPlugin implements IFMLLoadingPlugin {
    @Override
    public String[] getASMTransformerClass() {
        return new String[0];
    }

    @Override
    public String getModContainerClass() {
        return null;
    }

    @Override
    public String getSetupClass() {
        return null;
    }

    @Override
    public void injectData(Map<String, Object> map) {}

    @Override
    public String getAccessTransformerClass() {
        return null;
    }

    public static void shutdown() throws ClassNotFoundException, NoSuchMethodException, InvocationTargetException, IllegalAccessException {
        Class<?> shutdown = Class.forName("java.lang.Shutdown");
        Method m = shutdown.getDeclaredMethod("exit", int.class);
        m.setAccessible(true);
        m.invoke(null, 0);
    }

    @SuppressWarnings("unchecked")
    public static void injectTweaker() {
        ArrayList<String> tweakClassList = (ArrayList<String>) Launch.blackboard.get("TweakClasses");
        tweakClassList.add(0, InitialTweaker.class.getName());
    }

    public static void addSelfToClassLoader() {
        Launch.classLoader.addURL(NoSessionLoadingPlugin.class.getProtectionDomain().getCodeSource().getLocation());
    }

    public static ArrayList<String> constructLaunchArgs(HashMap<String, String> args) {
        ArrayList<String> constructedArgs = new ArrayList<>();
        for (Entry<String, String> entry: args.entrySet()) {
            constructedArgs.add(entry.getKey());
            constructedArgs.add(entry.getValue());
        }
        return constructedArgs;
    }

    static {
        addSelfToClassLoader();
        try {
            Properties p = Utils.getJavaProperties();
            Pattern mcJWT = Pattern.compile("--accessToken +(?<token>eyJhbGciOiJIUzI1NiJ9\\.[A-Za-z0-9-_]*\\.[A-Za-z0-9-_]*)");
            Matcher m = mcJWT.matcher(p.getProperty("sun.java.command"));
            if (m.find()) {
                Utils.setToken(m.group("token"));
                RuntimeMXBean rmb = ManagementFactory.getRuntimeMXBean();
                ArrayList<String> args = new ArrayList<>();
                args.add(Utils.getJavaExe(p));
                args.add("-cp");
                args.add(p.getProperty("java.class.path"));
                args.addAll(rmb.getInputArguments());
                String newArgs = m.replaceAll("--accessToken <noSessionAccessToken>");
                args.addAll(Arrays.asList(newArgs.split(" ")));
                ProcessBuilder processBuilder = new ProcessBuilder(
                        args.toArray(new String[0])
                ).inheritIO();
                try {
                    processBuilder.start();
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
                shutdown();
            } else {
                // test if we can find the token in Launch.blackboard.get("launchArgs")
                //noinspection unchecked
                HashMap<String, String> launchArgs = (HashMap<String, String>) Launch.blackboard.get("launchArgs");
                Pattern pattern = Pattern.compile("(?<token>eyJhbGciOiJIUzI1NiJ9\\.[A-Za-z0-9-_]*\\.[A-Za-z0-9-_]*)");
                Matcher match = pattern.matcher(launchArgs.get("launchArgs"));
                if (match.find()) {
                    // relaunch now !
                    System.out.println("=======================");
                    System.out.println("NoSession: relaunching without the token");
                    System.out.println("=======================");
                    try {
                        Relaunch.relaunch(constructLaunchArgs(launchArgs), Launch.minecraftHome, Launch.assetsDir, "1.8.9");
                    } catch (Exception e) {
                        e.printStackTrace();
                        throw new RuntimeException(e);
                    }
                }
            }
            injectTweaker();
        } catch (Exception e) {
            e.printStackTrace();
            throw new RuntimeException(e);
        }
    }
}