Paper/Spigot-Server-Patches/0372-Catch-JsonParseException-in-Entity-and-TE-names.patch

From b80b23e0c387b09ceaed6772cfdae833e07c1ed1 Mon Sep 17 00:00:00 2001
From: Zach Brown <zach.brown@destroystokyo.com>
Date: Sat, 22 Sep 2018 15:56:59 -0400
Subject: [PATCH] Catch JsonParseException in Entity and TE names

As a result, data that no longer parses correctly will not crash the server
instead just logging the exception and continuing (and in most cases should
fix the data)

Player data is fixed pretty much immediately but some block data (like
Shulkers) may need to be changed in order for it to re-save properly

No more crashing though.

diff --git a/src/main/java/net/minecraft/server/CommandBlockListenerAbstract.java b/src/main/java/net/minecraft/server/CommandBlockListenerAbstract.java
index 729859d1..2a1dffbf 100644
--- a/src/main/java/net/minecraft/server/CommandBlockListenerAbstract.java
+++ b/src/main/java/net/minecraft/server/CommandBlockListenerAbstract.java
@@ -57,7 +57,7 @@ public abstract class CommandBlockListenerAbstract implements ICommandListener {
         this.g = nbttagcompound.getString("Command");
         this.d = nbttagcompound.getInt("SuccessCount");
         if (nbttagcompound.hasKeyOfType("CustomName", 8)) {
-            this.h = IChatBaseComponent.ChatSerializer.a(nbttagcompound.getString("CustomName"));
+            this.h = MCUtil.getBaseComponentFromNbt("CustomName", nbttagcompound); // Paper - Catch ParseException
         }
 
         if (nbttagcompound.hasKeyOfType("TrackOutput", 1)) {
diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index c45c5208..0237049a 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -1733,7 +1733,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
             this.setPosition(this.locX, this.locY, this.locZ);
             this.setYawPitch(this.yaw, this.pitch);
             if (nbttagcompound.hasKeyOfType("CustomName", 8)) {
-                this.setCustomName(IChatBaseComponent.ChatSerializer.a(nbttagcompound.getString("CustomName")));
+                this.setCustomName(MCUtil.getBaseComponentFromNbt("CustomName", nbttagcompound)); // Paper - Catch ParseException
             }
 
             this.setCustomNameVisible(nbttagcompound.getBoolean("CustomNameVisible"));
diff --git a/src/main/java/net/minecraft/server/MCUtil.java b/src/main/java/net/minecraft/server/MCUtil.java
index 0ef5ad11..f70f5899 100644
--- a/src/main/java/net/minecraft/server/MCUtil.java
+++ b/src/main/java/net/minecraft/server/MCUtil.java
@@ -339,4 +339,19 @@ public final class MCUtil {
                 return null;
         }
     }
+
+    @Nullable
+    public static IChatBaseComponent getBaseComponentFromNbt(String key, NBTTagCompound compound) {
+        if (!compound.hasKey(key)) {
+            return null;
+        }
+        String string = compound.getString(key);
+        try {
+            return IChatBaseComponent.ChatSerializer.jsonToComponent(string);
+        } catch (com.google.gson.JsonParseException e) {
+            org.bukkit.Bukkit.getLogger().warning("Unable to parse " + key + " from " + compound +": " + e.getMessage());
+        }
+
+        return null;
+    }
 }
diff --git a/src/main/java/net/minecraft/server/TileEntityBanner.java b/src/main/java/net/minecraft/server/TileEntityBanner.java
index b4fae0d3..364a9fa7 100644
--- a/src/main/java/net/minecraft/server/TileEntityBanner.java
+++ b/src/main/java/net/minecraft/server/TileEntityBanner.java
@@ -74,7 +74,7 @@ public class TileEntityBanner extends TileEntity implements INamableTileEntity {
     public void load(NBTTagCompound nbttagcompound) {
         super.load(nbttagcompound);
         if (nbttagcompound.hasKeyOfType("CustomName", 8)) {
-            this.a = IChatBaseComponent.ChatSerializer.a(nbttagcompound.getString("CustomName"));
+            this.a = MCUtil.getBaseComponentFromNbt("CustomName", nbttagcompound); // Paper - Catch ParseException
         }
 
         if (this.hasWorld()) {
diff --git a/src/main/java/net/minecraft/server/TileEntityBrewingStand.java b/src/main/java/net/minecraft/server/TileEntityBrewingStand.java
index 480faa66..f3ddb86d 100644
--- a/src/main/java/net/minecraft/server/TileEntityBrewingStand.java
+++ b/src/main/java/net/minecraft/server/TileEntityBrewingStand.java
@@ -236,7 +236,7 @@ public class TileEntityBrewingStand extends TileEntityContainer implements IWorl
         ContainerUtil.b(nbttagcompound, this.items);
         this.brewTime = nbttagcompound.getShort("BrewTime");
         if (nbttagcompound.hasKeyOfType("CustomName", 8)) {
-            this.k = IChatBaseComponent.ChatSerializer.a(nbttagcompound.getString("CustomName"));
+            this.k = MCUtil.getBaseComponentFromNbt("CustomName", nbttagcompound); // Paper - Catch ParseException
         }
 
         this.fuelLevel = nbttagcompound.getByte("Fuel");
diff --git a/src/main/java/net/minecraft/server/TileEntityChest.java b/src/main/java/net/minecraft/server/TileEntityChest.java
index 7594c16e..80379307 100644
--- a/src/main/java/net/minecraft/server/TileEntityChest.java
+++ b/src/main/java/net/minecraft/server/TileEntityChest.java
@@ -83,7 +83,7 @@ public class TileEntityChest extends TileEntityLootable { // Paper - Remove ITic
         }
 
         if (nbttagcompound.hasKeyOfType("CustomName", 8)) {
-            this.i = IChatBaseComponent.ChatSerializer.a(nbttagcompound.getString("CustomName"));
+            this.i = MCUtil.getBaseComponentFromNbt("CustomName", nbttagcompound); // Paper - Catch ParseException
         }
 
     }
diff --git a/src/main/java/net/minecraft/server/TileEntityDispenser.java b/src/main/java/net/minecraft/server/TileEntityDispenser.java
index ddd2e0eb..21bd156e 100644
--- a/src/main/java/net/minecraft/server/TileEntityDispenser.java
+++ b/src/main/java/net/minecraft/server/TileEntityDispenser.java
@@ -107,7 +107,7 @@ public class TileEntityDispenser extends TileEntityLootable {
         }
 
         if (nbttagcompound.hasKeyOfType("CustomName", 8)) {
-            this.i = IChatBaseComponent.ChatSerializer.a(nbttagcompound.getString("CustomName"));
+            this.i = MCUtil.getBaseComponentFromNbt("CustomName", nbttagcompound); // Paper - Catch ParseException
         }
 
     }
diff --git a/src/main/java/net/minecraft/server/TileEntityFurnace.java b/src/main/java/net/minecraft/server/TileEntityFurnace.java
index a537d35b..f6bc6403 100644
--- a/src/main/java/net/minecraft/server/TileEntityFurnace.java
+++ b/src/main/java/net/minecraft/server/TileEntityFurnace.java
@@ -219,7 +219,7 @@ public class TileEntityFurnace extends TileEntityContainer implements IWorldInve
         }
 
         if (nbttagcompound.hasKeyOfType("CustomName", 8)) {
-            this.l = IChatBaseComponent.ChatSerializer.a(nbttagcompound.getString("CustomName"));
+            this.l = MCUtil.getBaseComponentFromNbt("CustomName", nbttagcompound); // Paper - Catch ParseException
         }
 
         // Paper start - cook speed API
diff --git a/src/main/java/net/minecraft/server/TileEntityHopper.java b/src/main/java/net/minecraft/server/TileEntityHopper.java
index a8cf160f..c5642217 100644
--- a/src/main/java/net/minecraft/server/TileEntityHopper.java
+++ b/src/main/java/net/minecraft/server/TileEntityHopper.java
@@ -61,7 +61,7 @@ public class TileEntityHopper extends TileEntityLootable implements IHopper, ITi
         }
 
         if (nbttagcompound.hasKeyOfType("CustomName", 8)) {
-            this.setCustomName(IChatBaseComponent.ChatSerializer.a(nbttagcompound.getString("CustomName")));
+            this.setCustomName(MCUtil.getBaseComponentFromNbt("CustomName", nbttagcompound)); // Paper - Catch ParseException
         }
 
         this.f = nbttagcompound.getInt("TransferCooldown");
diff --git a/src/main/java/net/minecraft/server/TileEntityShulkerBox.java b/src/main/java/net/minecraft/server/TileEntityShulkerBox.java
index df9a3056..65a68545 100644
--- a/src/main/java/net/minecraft/server/TileEntityShulkerBox.java
+++ b/src/main/java/net/minecraft/server/TileEntityShulkerBox.java
@@ -254,7 +254,7 @@ public class TileEntityShulkerBox extends TileEntityLootable implements IWorldIn
         }
 
         if (nbttagcompound.hasKeyOfType("CustomName", 8)) {
-            this.i = IChatBaseComponent.ChatSerializer.a(nbttagcompound.getString("CustomName"));
+            this.i = MCUtil.getBaseComponentFromNbt("CustomName", nbttagcompound); // Paper - Catch ParseException
         }
 
     }
-- 
2.19.1