Allow connection to shadowbanned servers

src/main/java/net/wurstclient/mixin/AllowedAddressResolverMixin.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2014-2023 Wurst-Imperium and contributors.
+ *
+ * This source code is subject to the terms of the GNU General Public
+ * License, version 3. If a copy of the GPL was not distributed with this
+ * file, You can obtain one at: https://www.gnu.org/licenses/gpl-3.0.txt
+ */
+package net.wurstclient.mixin;
+
+import java.util.Optional;
+
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+import net.minecraft.client.network.Address;
+import net.minecraft.client.network.AddressResolver;
+import net.minecraft.client.network.AllowedAddressResolver;
+import net.minecraft.client.network.RedirectResolver;
+import net.minecraft.client.network.ServerAddress;
+import net.wurstclient.WurstClient;
+
+@Mixin(AllowedAddressResolver.class)
+public class AllowedAddressResolverMixin
+{
+	@Shadow
+	@Final
+	private AddressResolver addressResolver;
+	
+	@Shadow
+	@Final
+	private RedirectResolver redirectResolver;
+	
+	/**
+	 * This mixin allows users to connect to servers that have been shadowbanned
+	 * by Mojang, such as CS:GO and GTA clones that are apparently "too
+	 * adult-oriented" for having pixelated guns.
+	 */
+	@Inject(at = @At("HEAD"),
+		method = "resolve(Lnet/minecraft/client/network/ServerAddress;)Ljava/util/Optional;",
+		cancellable = true)
+	public void resolve(ServerAddress address,
+		CallbackInfoReturnable<Optional<Address>> cir)
+	{
+		if(!WurstClient.INSTANCE.isEnabled())
+			return;
+		
+		Optional<Address> optionalAddress = addressResolver.resolve(address);
+		Optional<ServerAddress> optionalRedirect =
+			redirectResolver.lookupRedirect(address);
+		
+		if(optionalRedirect.isPresent())
+			optionalAddress = addressResolver.resolve(optionalRedirect.get());
+		
+		cir.setReturnValue(optionalAddress);
+	}
+}

src/main/resources/wurst.mixins.json

@@ -8,6 +8,7 @@
   "client": [
   	"AbstractBlockStateMixin",
     "AbstractSignEditScreenMixin",
+    "AllowedAddressResolverMixin",
     "ArmorItemMixin",
     "BackgroundRendererMixin",
   	"BlockEntityRenderDispatcherMixin",