Paper/Spigot-Server-Patches/0366-Catch-JsonParseException-in-Entity-and-TE-names.patch

From 1c42d652f8e89a08c70d95eef465259447769e7b 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 729859d13..2a1dffbf4 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 ab8490ff9..522af3d53 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -1734,7 +1734,7 @@ 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 0ef5ad116..f70f5899f 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 b4fae0d30..364a9fa7a 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 22dcdc126..1467b540f 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 7594c16e9..803793072 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 ddd2e0eb0..21bd156e9 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 324a8431c..49e7fd064 100644
--- a/src/main/java/net/minecraft/server/TileEntityFurnace.java
+++ b/src/main/java/net/minecraft/server/TileEntityFurnace.java
@@ -218,7 +218,7 @@ 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 cdc576058..2dae75f45 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 d4f379db9..59a0f4b2c 100644
--- a/src/main/java/net/minecraft/server/TileEntityShulkerBox.java
+++ b/src/main/java/net/minecraft/server/TileEntityShulkerBox.java
@@ -249,7 +249,7 @@ 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
         }
 
     }
-- 
2.20.0