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Support Citizens2

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yushijinhun 2018-12-30 00:40:49 +08:00
parent 15f766ab29
commit 5531c8a06e
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2 changed files with 66 additions and 0 deletions
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2
src/main/java/moe/yushi/authlibinjector/AuthlibInjector.java
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@ -31,6 +31,7 @@ import moe.yushi.authlibinjector.transform.ConstantURLTransformUnit;
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.util.Logging;
public final class AuthlibInjector {
@ -296,6 +297,7 @@ public final class AuthlibInjector {
}
transformer.units.add(new ConstantURLTransformUnit(urlProcessor));
transformer.units.add(new CitizensTransformer());
transformer.units.add(new SkinWhitelistTransformUnit(config.getSkinDomains().toArray(new String[0])));

64
src/main/java/moe/yushi/authlibinjector/transform/support/CitizensTransformer.java Normal file
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@ -0,0 +1,64 @@
package moe.yushi.authlibinjector.transform.support;
import static org.objectweb.asm.Opcodes.ALOAD;
import static org.objectweb.asm.Opcodes.ASM6;
import static org.objectweb.asm.Opcodes.F_SAME;
import static org.objectweb.asm.Opcodes.GETFIELD;
import static org.objectweb.asm.Opcodes.IFEQ;
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.Label;
import org.objectweb.asm.MethodVisitor;
import moe.yushi.authlibinjector.transform.TransformUnit;
/**
* Support for Citizens2
*
* In <https://github.com/CitizensDev/Citizens2/commit/28b0c4fdc3b343d4dc14f2a45cff37c0b75ced1d>,
* the profile-url that Citizens use became configurable. This class is used to make Citizens ignore
* the config property and use authlib-injector's url.
*/
public class CitizensTransformer implements TransformUnit {
@Override
public Optional<ClassVisitor> transform(ClassLoader classLoader, String className, ClassVisitor writer, Runnable modifiedCallback) {
if ("net.citizensnpcs.Settings$Setting".equals(className)) {
return Optional.of(new ClassVisitor(ASM6, writer) {
@Override
public MethodVisitor visitMethod(int access, String name, String descriptor, String signature, String[] exceptions) {
if (("loadFromKey".equals(name) || "setAtKey".equals(name))
&& "(Lnet/citizensnpcs/api/util/DataKey;)V".equals(descriptor)) {
return new MethodVisitor(ASM6, super.visitMethod(access, name, descriptor, signature, exceptions)) {
@Override
public void visitCode() {
super.visitCode();
super.visitLdcInsn("general.authlib.profile-url");
super.visitVarInsn(ALOAD, 0);
super.visitFieldInsn(GETFIELD, "net/citizensnpcs/Settings$Setting", "path", "Ljava/lang/String;");
super.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "equals", "(Ljava/lang/Object;)Z", false);
Label lbl = new Label();
super.visitJumpInsn(IFEQ, lbl);
super.visitInsn(RETURN);
super.visitLabel(lbl);
super.visitFrame(F_SAME, 0, null, 0, null);
modifiedCallback.run();
}
};
}
return super.visitMethod(access, name, descriptor, signature, exceptions);
}
});
}
return Optional.empty();
}
@Override
public String toString() {
return "Citizens2 Support";
}
}