Add the current files and make a README.md for those who are not coming from the tutorial or want to build this themselves
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README.md
16
README.md
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# PalaLauncher4Linux
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# PalaLauncher4Linux
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A live patcher for Paladium Games launcher to allow launching games on Linux
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A live patcher for Paladium Games launcher to allow launching games on Linux
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## Compiling
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Compiling should be easy and done automatically on any IDE that uses `pom.xml` files.
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In my case, I use Pulsar (Atom's continuation) with its `ide-java` package and it works well.
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Just don't forget to compile for Java 8 for better compatibility with the launcher.
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## Packaging
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This is pretty straightforward, just make a `.jar` file with the contents of the `target/classes` folder and add the contents of a [Javassist .jar](https://github.com/jboss-javassist/javassist/releases) into the .jar previously made.
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## Using
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Simple, just add `-javaagent:path/to/the/built.jar` before `.jar` when you start the launcher located in the `~/paladium-games` folder.
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Also be sure to use Java 8 for better compatibility.
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35
pom.xml
Normal file
35
pom.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
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<modelVersion>4.0.0</modelVersion>
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<groupId>net.x3f200c.pala4linux.launcherpatch</groupId>
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<artifactId>PalaLauncher4Linux</artifactId>
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<version>0.0.1</version>
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<packaging>jar</packaging>
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<properties>
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<maven.compiler.source>1.7</maven.compiler.source>
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<maven.compiler.target>1.7</maven.compiler.target>
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</properties>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<configuration>
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<source>1.8</source>
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<target>1.8</target>
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<fork>true</fork>
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</configuration>
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</plugin>
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</plugins>
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<dependencies>
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<dependency>
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<groupId>org.javassist</groupId>
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<artifactId>javassist</artifactId>
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<version>3.29.2-GA</version>
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</dependency>
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</dependencies>
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</project>
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package net.x3f200c.pala4linux.launcherpatch;
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import java.lang.instrument.Instrumentation;
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import java.lang.instrument.UnmodifiableClassException;
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import java.lang.Class;
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import java.lang.String;
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import net.x3f200c.pala4linux.launcherpatch.LauncherPatcher;
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public class LauncherPatch {
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public static void premain(String agentArgs, Instrumentation inst) {
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patch(inst);
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}
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public static void agentmain(String agentArgs, Instrumentation inst) {
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patch(inst);
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}
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public static void patch(Instrumentation inst) {
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Class<?> routeHandlerClass = null;
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ClassLoader routeHandlerClassLoader = null;
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try {
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routeHandlerClass = Class.forName("fr.paladium.router.route.common.CommonRoute");
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routeHandlerClassLoader = routeHandlerClass.getClassLoader();
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} catch(ClassNotFoundException e) {
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}
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LauncherPatcher dt = new LauncherPatcher(routeHandlerClass.getName(), routeHandlerClassLoader);
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inst.addTransformer(dt, true);
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try {
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inst.retransformClasses(routeHandlerClass);
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} catch(UnmodifiableClassException e) {
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}
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}
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}
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package net.x3f200c.pala4linux.launcherpatch;
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import java.lang.instrument.ClassFileTransformer;
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import java.io.IOException;
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import java.security.ProtectionDomain;
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import javassist.ClassPool;
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import javassist.CtClass;
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import javassist.CtMethod;
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import javassist.NotFoundException;
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import javassist.CannotCompileException;
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class LauncherPatcher implements ClassFileTransformer {
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private final String targetClassName;
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public LauncherPatcher(String className, ClassLoader classLoader) {
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this.targetClassName = className;
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}
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@Override
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public byte[] transform(ClassLoader loader, String className, Class<?> redefinedClass, ProtectionDomain protectionDomain, byte[] classBuffer) {
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byte[] bytecode = classBuffer;
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String finalTargetClassName = this.targetClassName.replaceAll("\\.", "/");
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if (!className.equals(finalTargetClassName)) {
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return bytecode;
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}
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if (className.equals(finalTargetClassName)) {
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try {
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ClassPool cp = ClassPool.getDefault();
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CtClass crClass = cp.get("fr.paladium.router.route.common.CommonRoute");
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CtMethod osGetterMethod = crClass.getDeclaredMethod("handleGetOS");
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osGetterMethod.setBody("{ return fr.paladium.router.handler.CefRouteHandler.create().success(\"os\", \"windows\"); }");
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bytecode = crClass.toBytecode();
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crClass.detach();
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} catch(NotFoundException | CannotCompileException | IOException e) {
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}
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}
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return bytecode;
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}
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}
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4
src/main/resources/META-INF/MANIFEST.MF
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4
src/main/resources/META-INF/MANIFEST.MF
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Agent-Class: net.x3f200c.pala4linux.launcherpatch.LauncherPatch
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Can-Redefine-Classes: true
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Can-Retransform-Classes: true
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Premain-Class: net.x3f200c.pala4linux.launcherpatch.LauncherPatch
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