From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Dreeam <61569423+Dreeam-qwq@users.noreply.github.com>
Date: Wed, 12 Oct 2022 14:36:58 -0400
Subject: [PATCH] Remove vanilla username check


diff --git a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
index 52c5ce7339029d7cc3bb1164131a9f96598760c0..1d496b2efc44065e91b4d612e17f38382489e876 100644
--- a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
@@ -181,7 +181,8 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener,
         // Gale start - JettPack - reduce array allocations
         Validate.validState(this.state == ServerLoginPacketListenerImpl.State.HELLO, "Unexpected hello packet", ArrayConstants.emptyObjectArray);
         // Paper start - Validate usernames
-        if (io.papermc.paper.configuration.GlobalConfiguration.get().proxies.isProxyOnlineMode()
+        if (!org.dreeam.leaf.config.modules.misc.RemoveVanillaUsernameCheck.enabled // Leaf - Remove Vanilla username check
+            && io.papermc.paper.configuration.GlobalConfiguration.get().proxies.isProxyOnlineMode()
             && io.papermc.paper.configuration.GlobalConfiguration.get().unsupportedSettings.performUsernameValidation
             && !this.iKnowThisMayNotBeTheBestIdeaButPleaseDisableUsernameValidation) {
             Validate.validState(StringUtil.isReasonablePlayerName(packet.name()), "Invalid characters in username", ArrayConstants.emptyObjectArray);
diff --git a/src/main/java/org/dreeam/leaf/config/modules/misc/RemoveVanillaUsernameCheck.java b/src/main/java/org/dreeam/leaf/config/modules/misc/RemoveVanillaUsernameCheck.java
new file mode 100644
index 0000000000000000000000000000000000000000..2dcdf5adff80f63499e6d160ff24313653cfb315
--- /dev/null
+++ b/src/main/java/org/dreeam/leaf/config/modules/misc/RemoveVanillaUsernameCheck.java
@@ -0,0 +1,29 @@
+package org.dreeam.leaf.config.modules.misc;
+
+import com.electronwill.nightconfig.core.file.CommentedFileConfig;
+import org.dreeam.leaf.config.ConfigInfo;
+import org.dreeam.leaf.config.EnumConfigCategory;
+import org.dreeam.leaf.config.IConfigModule;
+
+public class RemoveVanillaUsernameCheck implements IConfigModule {
+
+    @Override
+    public EnumConfigCategory getCategory() {
+        return EnumConfigCategory.MISC;
+    }
+
+    @Override
+    public String getBaseName() {
+        return "remove_vanilla_username_check";
+    }
+
+    @ConfigInfo(baseName = "enabled")
+    public static boolean enabled = true;
+
+    @Override
+    public void onLoaded(CommentedFileConfig config) {
+        config.setComment("misc.remove_vanilla_username_check", """
+                Remove Vanilla username check
+                allowing all characters as username""");
+    }
+}