Scissors/patches/server/0012-Better-handling-of-invalid-JSON-components.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Telesphoreo <me@telesphoreo.me>
Date: Mon, 15 Apr 2024 22:36:13 -0500
Subject: [PATCH] Better handling of invalid JSON components


diff --git a/src/main/java/io/papermc/paper/util/MCUtil.java b/src/main/java/io/papermc/paper/util/MCUtil.java
index e028353e0261310afc42ca0454b723d9f1ffc131..ed8810319db2ce754245193a62ea7a9a32ac13ec 100644
--- a/src/main/java/io/papermc/paper/util/MCUtil.java
+++ b/src/main/java/io/papermc/paper/util/MCUtil.java
@@ -675,12 +675,6 @@ public final class MCUtil {
             return null;
         }
         String string = compound.getString(key);
-        try {
-            return net.minecraft.network.chat.Component.Serializer.fromJson(string);
-        } catch (com.google.gson.JsonParseException e) {
-            org.bukkit.Bukkit.getLogger().warning("Unable to parse " + key + " from " + compound +": " + e.getMessage());
-        }
-
-        return null;
+        return net.minecraft.network.chat.Component.Serializer.fromJsonSafe(string); // Scissors
     }
 }
diff --git a/src/main/java/net/minecraft/network/chat/Component.java b/src/main/java/net/minecraft/network/chat/Component.java
index d3a80d0a23be762c05931ae8001d98e43cab2b4a..ae84d06564b2560e13404f6d89f88ad71dbc2cc6 100644
--- a/src/main/java/net/minecraft/network/chat/Component.java
+++ b/src/main/java/net/minecraft/network/chat/Component.java
@@ -315,6 +315,26 @@ public interface Component extends Message, FormattedText, Iterable<Component> {
             return json == null ? null : Serializer.deserialize(json);
         }
 
+        // Scissors start
+        @Nullable
+        public static MutableComponent fromJsonSafe(String json) {
+            try {
+                return fromJson(json);
+            } catch (Exception ex) {
+                return Component.empty().append("** Invalid JSON Component **").withStyle(ChatFormatting.RED);
+            }
+        }
+
+        @Nullable
+        public static MutableComponent fromJsonSafe(JsonElement json) {
+            try {
+                return fromJson(json);
+            } catch (Exception ex) {
+                return Component.empty().append("** Invalid JSON Component **").withStyle(ChatFormatting.RED);
+            }
+        }
+        // Scissors end
+
         @Nullable
         public static MutableComponent fromJsonLenient(String json) {
             JsonReader jsonreader = new JsonReader(new StringReader(json));
diff --git a/src/main/java/net/minecraft/network/chat/HoverEvent.java b/src/main/java/net/minecraft/network/chat/HoverEvent.java
index a82b4e39c3160114aded3f33c85fad2e95065b72..e1f15ac481ab598e420ad79bcf289251d9f1c99a 100644
--- a/src/main/java/net/minecraft/network/chat/HoverEvent.java
+++ b/src/main/java/net/minecraft/network/chat/HoverEvent.java
@@ -147,7 +147,7 @@ public class HoverEvent {
         public static DataResult<HoverEvent.EntityTooltipInfo> legacyCreate(Component text) {
             try {
                 CompoundTag compoundTag = TagParser.parseTag(text.getString());
-                Component component = Component.Serializer.fromJson(compoundTag.getString("name"));
+                Component component = Component.Serializer.fromJsonSafe(compoundTag.getString("name")); // Scissors - Use safer method for getting Components from JSON
                 EntityType<?> entityType = BuiltInRegistries.ENTITY_TYPE.get(new ResourceLocation(compoundTag.getString("type")));
                 // Scissors start
                 UUID uUID;
diff --git a/src/main/java/net/minecraft/network/chat/contents/NbtContents.java b/src/main/java/net/minecraft/network/chat/contents/NbtContents.java
index c5673657ca6332147a5cbd2f4107fee13b9b7f47..3fec6f3e0adef6e2094157ef9040c7c6dc41a6c2 100644
--- a/src/main/java/net/minecraft/network/chat/contents/NbtContents.java
+++ b/src/main/java/net/minecraft/network/chat/contents/NbtContents.java
@@ -124,10 +124,10 @@ public class NbtContents implements ComponentContents {
                 );
                 return stream.flatMap(text -> {
                     try {
-                        MutableComponent mutableComponent = Component.Serializer.fromJson(text);
+                        MutableComponent mutableComponent = Component.Serializer.fromJsonSafe(text); // Scissors
                         return Stream.of(ComponentUtils.updateForEntity(source, mutableComponent, sender, depth));
                     } catch (Exception var5x) {
-                        LOGGER.warn("Failed to parse component: {}", text, var5x);
+                        // Scissors - don't log
                         return Stream.of();
                     }
                 }).reduce((accumulator, current) -> accumulator.append(component).append(current)).orElseGet(Component::empty);
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 637478fd8a284e6833cf8f5fa17ccf9d73d1dd3f..2ecf2d8ff546ed097cb3b547db22d28a31d29ec4 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -2545,11 +2545,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, S
                     if (nbt.contains("CustomName", 8)) {
                         String s = nbt.getString("CustomName");
 
-                        try {
-                            this.setCustomName(Component.Serializer.fromJson(s));
-                        } catch (Exception exception) {
-                            Entity.LOGGER.warn("Failed to parse entity custom name {}", s, exception);
-                        }
+                        this.setCustomName(Component.Serializer.fromJsonSafe(s)); // Scissors - Use safer method for getting Components from JSON
                     }
 
                     this.setCustomNameVisible(nbt.getBoolean("CustomNameVisible"));
diff --git a/src/main/java/net/minecraft/world/scores/ScoreboardSaveData.java b/src/main/java/net/minecraft/world/scores/ScoreboardSaveData.java
index 7eb1c28886741bdfe7985d16b6824f3e85ffae50..a6b7ff2e50c9700589428cc7d61b5ef9f9082ea8 100644
--- a/src/main/java/net/minecraft/world/scores/ScoreboardSaveData.java
+++ b/src/main/java/net/minecraft/world/scores/ScoreboardSaveData.java
@@ -41,7 +41,7 @@ public class ScoreboardSaveData extends SavedData {
             CompoundTag compoundTag = nbt.getCompound(i);
             String string = compoundTag.getString("Name");
             PlayerTeam playerTeam = this.scoreboard.addPlayerTeam(string);
-            Component component = Component.Serializer.fromJson(compoundTag.getString("DisplayName"));
+            Component component = Component.Serializer.fromJsonSafe(compoundTag.getString("DisplayName")); // Scissors - Use safer method for getting Components from JSON
             if (component != null) {
                 playerTeam.setDisplayName(component);
             }
@@ -59,14 +59,14 @@ public class ScoreboardSaveData extends SavedData {
             }
 
             if (compoundTag.contains("MemberNamePrefix", 8)) {
-                Component component2 = Component.Serializer.fromJson(compoundTag.getString("MemberNamePrefix"));
+                Component component2 = Component.Serializer.fromJsonSafe(compoundTag.getString("MemberNamePrefix")); // Scissors - Use safer method for getting Components from JSON
                 if (component2 != null) {
                     playerTeam.setPlayerPrefix(component2);
                 }
             }
 
             if (compoundTag.contains("MemberNameSuffix", 8)) {
-                Component component3 = Component.Serializer.fromJson(compoundTag.getString("MemberNameSuffix"));
+                Component component3 = Component.Serializer.fromJsonSafe(compoundTag.getString("MemberNameSuffix")); // Scissors - Use safer method for getting Components from JSON
                 if (component3 != null) {
                     playerTeam.setPlayerSuffix(component3);
                 }
@@ -123,7 +123,7 @@ public class ScoreboardSaveData extends SavedData {
                 return ObjectiveCriteria.DUMMY;
             });
             String string2 = compoundTag.getString("Name");
-            Component component = Component.Serializer.fromJson(compoundTag.getString("DisplayName"));
+            Component component = Component.Serializer.fromJsonSafe(compoundTag.getString("DisplayName")); // Scissors - Use safer method for getting Components from JSON
             ObjectiveCriteria.RenderType renderType = ObjectiveCriteria.RenderType.byId(compoundTag.getString("RenderType"));
             boolean bl = compoundTag.getBoolean("display_auto_update");
             NumberFormat numberFormat = NumberFormatTypes.CODEC.parse(NbtOps.INSTANCE, compoundTag.get("format")).result().orElse(null);