1 files changed, 80 insertions, 0 deletions
diff --git a/patches/server/0056-Improve-Player-chat-API-handling.patch b/patches/server/0056-Improve-Player-chat-API-handling.patch
new file mode 100644
index 0000000000..ddf0a3129b
--- /dev/null
+++ b/patches/server/0056-Improve-Player-chat-API-handling.patch
@@ -0,0 +1,80 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <[email protected]>
+Date: Thu, 3 Mar 2016 01:17:12 -0600
+Subject: [PATCH] Improve Player chat API handling
+
+Properly split up the chat and command handling to reflect the server now
+having separate packets for both, and the client always using the correct packet. Text
+from a chat packet should never be parsed into a command, even if it starts with the `/`
+character.
+
+Add a missing async catcher and improve Spigot's async catcher error message.
+
+== AT ==
+public net.minecraft.server.network.ServerGamePacketListenerImpl isChatMessageIllegal(Ljava/lang/String;)Z
+
+Co-authored-by: Jake Potrebic <[email protected]>
+Co-authored-by: SoSeDiK <[email protected]>
+
+diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+index 4f50e2f5de529813c269b7670a47e06306575b60..f9050a1d255780d5131200e8b31bd91154907af6 100644
+--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
++++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+@@ -2013,7 +2013,7 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
+         }
+         OutgoingChatMessage outgoing = OutgoingChatMessage.create(original);
+ 
+-        if (!async && s.startsWith("/")) {
++        if (false && !async && s.startsWith("/")) { // Paper - Don't handle commands in chat logic
+             this.handleCommand(s);
+         } else if (this.player.getChatVisibility() == ChatVisiblity.SYSTEM) {
+             // Do nothing, this is coming from a plugin
+@@ -2100,7 +2100,8 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
+         }
+     }
+ 
+-    private void handleCommand(String s) {
++    public void handleCommand(String s) { // Paper - private -> public
++        org.spigotmc.AsyncCatcher.catchOp("Command Dispatched Async: " + s); // Paper - Add async catcher
+         co.aikar.timings.MinecraftTimings.playerCommandTimer.startTiming(); // Paper
+         if ( org.spigotmc.SpigotConfig.logCommands ) // Spigot
+         this.LOGGER.info(this.player.getScoreboardName() + " issued server command: " + s);
+diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+index 7c97ec4aa57562a8383a40e493eaa8a3697208bb..78193f0d66c2755ed238824bcd24ced9f9052188 100644
+--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
++++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+@@ -925,7 +925,7 @@ public final class CraftServer implements Server {
+     public boolean dispatchCommand(CommandSender sender, String commandLine) {
+         Preconditions.checkArgument(sender != null, "sender cannot be null");
+         Preconditions.checkArgument(commandLine != null, "commandLine cannot be null");
+-        org.spigotmc.AsyncCatcher.catchOp("command dispatch"); // Spigot
++        org.spigotmc.AsyncCatcher.catchOp("Command Dispatched Async: " + commandLine); // Spigot // Paper - Include command in error message
+ 
+         if (this.commandMap.dispatch(sender, commandLine)) {
+             return true;
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+index e42b928d7019b636d4fd092d4a222208a7787bcb..783db0dc65725c49ffc4af0f2ca7357ab051d12c 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+@@ -546,7 +546,20 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
+ 
+         if (this.getHandle().connection == null) return;
+ 
+-        this.getHandle().connection.chat(msg, PlayerChatMessage.system(msg), false);
++        // Paper start - Improve chat handling
++        if (ServerGamePacketListenerImpl.isChatMessageIllegal(msg)) {
++            this.getHandle().connection.disconnect(Component.translatable("multiplayer.disconnect.illegal_characters"));
++        } else {
++            if (msg.startsWith("/")) {
++                this.getHandle().connection.handleCommand(msg);
++            } else {
++                final PlayerChatMessage playerChatMessage = PlayerChatMessage.system(msg).withUnsignedContent(Component.literal(msg));
++                // TODO chat decorating
++                // TODO text filtering
++                this.getHandle().connection.chat(msg, playerChatMessage, false);
++            }
++        }
++        // Paper end - Improve chat handling
+     }
+ 
+     @Override