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Add support for launchwrapper, fix #33

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Thanks to @NekoCaffeine
This commit is contained in:
yushijinhun 2019-01-19 19:50:31 +08:00
parent 590ba38b3e
commit 79873f126c
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GPG key ID: 5BC167F73EA558E4
2 changed files with 52 additions and 0 deletions
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2
src/main/java/moe/yushi/authlibinjector/AuthlibInjector.java
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@ -51,6 +51,7 @@ import moe.yushi.authlibinjector.transform.DumpClassListener;
import moe.yushi.authlibinjector.transform.SkinWhitelistTransformUnit;
import moe.yushi.authlibinjector.transform.YggdrasilKeyTransformUnit;
import moe.yushi.authlibinjector.transform.support.CitizensTransformer;
import moe.yushi.authlibinjector.transform.support.LaunchWrapperTransformer;
import moe.yushi.authlibinjector.util.Logging;
import moe.yushi.authlibinjector.yggdrasil.CustomYggdrasilAPIProvider;
import moe.yushi.authlibinjector.yggdrasil.MojangYggdrasilAPIProvider;
@ -332,6 +333,7 @@ public final class AuthlibInjector {
transformer.units.add(new ConstantURLTransformUnit(urlProcessor));
transformer.units.add(new CitizensTransformer());
transformer.units.add(new LaunchWrapperTransformer());
transformer.units.add(new SkinWhitelistTransformUnit(config.getSkinDomains().toArray(new String[0])));

50
src/main/java/moe/yushi/authlibinjector/transform/support/LaunchWrapperTransformer.java Normal file
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@ -0,0 +1,50 @@
package moe.yushi.authlibinjector.transform.support;
import static org.objectweb.asm.Opcodes.ALOAD;
import static org.objectweb.asm.Opcodes.ASM7;
import static org.objectweb.asm.Opcodes.INVOKEVIRTUAL;
import static org.objectweb.asm.Opcodes.RETURN;
import java.util.Optional;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.MethodVisitor;
import moe.yushi.authlibinjector.transform.TransformUnit;
public class LaunchWrapperTransformer implements TransformUnit {
@Override
public Optional<ClassVisitor> transform(ClassLoader classLoader, String className, ClassVisitor writer, Runnable modifiedCallback) {
if ("net.minecraft.launchwrapper.LaunchClassLoader".equals(className)) {
return Optional.of(new ClassVisitor(ASM7, writer) {
@Override
public MethodVisitor visitMethod(int access, String name, String descriptor, String signature, String[] exceptions) {
if ("<init>".equals(name)) {
return new MethodVisitor(ASM7, super.visitMethod(access, name, descriptor, signature, exceptions)) {
@Override
public void visitInsn(int opcode) {
if (opcode == RETURN) {
modifiedCallback.run();
super.visitVarInsn(ALOAD, 0);
super.visitLdcInsn("moe.yushi.authlibinjector.");
super.visitMethodInsn(INVOKEVIRTUAL, "net/minecraft/launchwrapper/LaunchClassLoader", "addClassLoaderExclusion", "(Ljava/lang/String;)V", false);
}
super.visitInsn(opcode);
}
};
} else {
return super.visitMethod(access, name, descriptor, signature, exceptions);
}
}
});
} else {
return Optional.empty();
}
}
@Override
public String toString() {
return "LaunchWrapper Support";
}
}