papermc/patches/server/0151-ProfileWhitelistVerifyEvent.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Mon, 3 Jul 2017 18:11:10 -0500
Subject: [PATCH] ProfileWhitelistVerifyEvent


diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
index 31dccb0b4ab60d6cedf236fc7d51a363c8367d71..1ae11a88b2ab49c13155e2cf41252c8716f30b96 100644
--- a/src/main/java/net/minecraft/server/players/PlayerList.java
+++ b/src/main/java/net/minecraft/server/players/PlayerList.java
@@ -615,9 +615,9 @@ public abstract class PlayerList {
 
             // return chatmessage;
             event.disallow(PlayerLoginEvent.Result.KICK_BANNED, PaperAdventure.asAdventure(chatmessage)); // Paper - Adventure
-        } else if (!this.isWhiteListed(gameprofile)) {
-            chatmessage = new TranslatableComponent("multiplayer.disconnect.not_whitelisted");
-            event.disallow(PlayerLoginEvent.Result.KICK_WHITELIST, PaperAdventure.LEGACY_SECTION_UXRC.deserialize(org.spigotmc.SpigotConfig.whitelistMessage)); // Spigot // Paper - Adventure
+        } else if (!this.isWhitelisted(gameprofile, event)) { // Paper
+            //chatmessage = new ChatMessage("multiplayer.disconnect.not_whitelisted"); // Paper
+            //event.disallow(PlayerLoginEvent.Result.KICK_WHITELIST, org.spigotmc.SpigotConfig.whitelistMessage); // Spigot // Paper - moved to isWhitelisted
         } else if (this.getIpBans().isBanned(socketaddress) && !this.getIpBans().get(socketaddress).hasExpired()) {
             IpBanListEntry ipbanentry = this.ipBans.get(socketaddress);
 
@@ -997,9 +997,25 @@ public abstract class PlayerList {
         this.server.getCommands().sendCommands(player);
     }
 
+    // Paper start
     public boolean isWhiteListed(GameProfile profile) {
-        return !this.doWhiteList || this.ops.contains(profile) || this.whitelist.contains(profile);
+        return isWhitelisted(profile, null);
     }
+    public boolean isWhitelisted(GameProfile gameprofile, org.bukkit.event.player.PlayerLoginEvent loginEvent) {
+        boolean isOp = this.ops.contains(gameprofile);
+        boolean isWhitelisted = !this.doWhiteList || isOp || this.whitelist.contains(gameprofile);
+        final com.destroystokyo.paper.event.profile.ProfileWhitelistVerifyEvent event;
+        event = new com.destroystokyo.paper.event.profile.ProfileWhitelistVerifyEvent(net.minecraft.server.MCUtil.toBukkit(gameprofile), this.doWhiteList, isWhitelisted, isOp, org.spigotmc.SpigotConfig.whitelistMessage);
+        event.callEvent();
+        if (!event.isWhitelisted()) {
+            if (loginEvent != null) {
+                loginEvent.disallow(PlayerLoginEvent.Result.KICK_WHITELIST, PaperAdventure.LEGACY_SECTION_UXRC.deserialize(event.getKickMessage() == null ? org.spigotmc.SpigotConfig.whitelistMessage : event.getKickMessage()));
+            }
+            return false;
+        }
+        return true;
+    }
+    // Paper end
 
     public boolean isOp(GameProfile profile) {
         return this.ops.contains(profile) || this.server.isSingleplayerOwner(profile) && this.server.getWorldData().getAllowCommands() || this.allowCheatsForAllPlayers;