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Support BungeeCord MC 1.19+

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Haowei Wen 2022-08-06 00:38:31 +08:00
parent f2ca302c1a
commit 29d2667000
2 changed files with 67 additions and 0 deletions
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src/main/java/moe/yushi/authlibinjector/AuthlibInjector.java
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@ -55,6 +55,7 @@ import moe.yushi.authlibinjector.transform.DumpClassListener;
import moe.yushi.authlibinjector.transform.support.AuthServerNameInjector;
import moe.yushi.authlibinjector.transform.support.AuthlibLogInterceptor;
import moe.yushi.authlibinjector.transform.support.BungeeCordAllowedCharactersTransformer;
import moe.yushi.authlibinjector.transform.support.BungeeCordProfileKeyTransformUnit;
import moe.yushi.authlibinjector.transform.support.CitizensTransformer;
import moe.yushi.authlibinjector.transform.support.ConcatenateURLTransformUnit;
import moe.yushi.authlibinjector.transform.support.ConstantURLTransformUnit;
@ -293,6 +294,7 @@ public final class AuthlibInjector {
transformer.units.add(new YggdrasilKeyTransformUnit());
config.getDecodedPublickey().ifPresent(YggdrasilKeyTransformUnit.PUBLIC_KEYS::add);
transformer.units.add(new VelocityProfileKeyTransformUnit());
transformer.units.add(new BungeeCordProfileKeyTransformUnit());
return transformer;
}

65
src/main/java/moe/yushi/authlibinjector/transform/support/BungeeCordProfileKeyTransformUnit.java Normal file
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@ -0,0 +1,65 @@
/*
* Copyright (C) 2022 Haowei Wen <yushijinhun@gmail.com> and contributors
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package moe.yushi.authlibinjector.transform.support;
import static org.objectweb.asm.Opcodes.ASM9;
import static org.objectweb.asm.Opcodes.ICONST_1;
import static org.objectweb.asm.Opcodes.IRETURN;
import java.util.Optional;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.MethodVisitor;
import moe.yushi.authlibinjector.transform.TransformContext;
import moe.yushi.authlibinjector.transform.TransformUnit;
/**
* Hacks BungeeCord to bypass profile key signature validation.
* See https://github.com/SpigotMC/BungeeCord/commit/78ca16dfe3bf9a21d5c054a1884d4f5f198a62bc .
*/
public class BungeeCordProfileKeyTransformUnit implements TransformUnit {
@Override
public Optional<ClassVisitor> transform(ClassLoader classLoader, String className, ClassVisitor writer, TransformContext ctx) {
if ("net.md_5.bungee.EncryptionUtil".equals(className)) {
return Optional.of(new ClassVisitor(ASM9, writer) {
@Override
public MethodVisitor visitMethod(int access, String name, String descriptor, String signature, String[] exceptions) {
if ("check".equals(name) && "(Lnet/md_5/bungee/protocol/PlayerPublicKey;Ljava/util/UUID;)Z".equals(descriptor)) {
ctx.markModified();
MethodVisitor mv = super.visitMethod(access, name, descriptor, signature, exceptions);
mv.visitCode();
mv.visitInsn(ICONST_1);
mv.visitInsn(IRETURN);
mv.visitMaxs(-1, -1);
mv.visitEnd();
return null;
} else {
return super.visitMethod(access, name, descriptor, signature, exceptions);
}
}
});
} else {
return Optional.empty();
}
}
@Override
public String toString() {
return "BungeeCord Profile Key Transformer";
}
}