Scissors/patches/server/0013-Better-handling-of-invalid-JSON-components.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Video <videogamesm12@gmail.com>
Date: Mon, 28 Mar 2022 13:19:43 -0600
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 8240bb085b619f257f8c0a25775e0b15068e440f..c80d58dc9cb9171d51ff0a0596bb27bf161c3c83 100644
--- a/src/main/java/io/papermc/paper/util/MCUtil.java
+++ b/src/main/java/io/papermc/paper/util/MCUtil.java
@@ -659,12 +659,6 @@ 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);
     }
 }
diff --git a/src/main/java/net/minecraft/network/chat/Component.java b/src/main/java/net/minecraft/network/chat/Component.java
index b540ce21c65ad52ad7e94d2ca2b3926c0875bee1..9cb6fa8e35c89f73e7c95dbe219a4bf6d00b60a9 100644
--- a/src/main/java/net/minecraft/network/chat/Component.java
+++ b/src/main/java/net/minecraft/network/chat/Component.java
@@ -26,6 +26,7 @@ import java.util.List;
 import java.util.Map.Entry;
 import java.util.Optional;
 import javax.annotation.Nullable;
+import net.minecraft.ChatFormatting; // Scissors
 import net.minecraft.Util;
 import net.minecraft.network.chat.contents.BlockDataSource;
 import net.minecraft.network.chat.contents.DataSource;
@@ -522,6 +523,26 @@ public interface Component extends Message, FormattedText, Iterable<Component> {
             return GsonHelper.toStableString(Serializer.toJsonTree(text));
         }
 
+        // 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
+
         public static JsonElement toJsonTree(Component text) {
             return Component.Serializer.GSON.toJsonTree(text);
         }
diff --git a/src/main/java/net/minecraft/network/chat/HoverEvent.java b/src/main/java/net/minecraft/network/chat/HoverEvent.java
index 7449a024265c42f28a6c9a1ed8d8f4b9e3096aac..487c68abc3eb5c18dc7fee762b2164001283cab7 100644
--- a/src/main/java/net/minecraft/network/chat/HoverEvent.java
+++ b/src/main/java/net/minecraft/network/chat/HoverEvent.java
@@ -79,7 +79,7 @@ public class HoverEvent {
                 if (jsonElement != null) {
                     return action.deserialize(jsonElement);
                 } else {
-                    Component component = Component.Serializer.fromJson(json.get("value"));
+                    Component component = Component.Serializer.fromJsonSafe(json.get("value")); // Scissors - Use safer method for getting Components from JSON
                     return component != null ? action.deserializeFromLegacy(component) : null;
                 }
             }
@@ -94,7 +94,7 @@ public class HoverEvent {
     }
 
     public static class Action<T> {
-        public static final HoverEvent.Action<Component> SHOW_TEXT = new HoverEvent.Action<>("show_text", true, Component.Serializer::fromJson, Component.Serializer::toJsonTree, Function.identity());
+        public static final HoverEvent.Action<Component> SHOW_TEXT = new HoverEvent.Action<>("show_text", true, Component.Serializer::fromJsonSafe, Component.Serializer::toJsonTree, Function.identity()); // Scissors - Use safer method for getting Components from JSON
         public static final HoverEvent.Action<HoverEvent.ItemStackInfo> SHOW_ITEM = new HoverEvent.Action<>("show_item", true, HoverEvent.ItemStackInfo::create, HoverEvent.ItemStackInfo::serialize, HoverEvent.ItemStackInfo::create);
         public static final HoverEvent.Action<HoverEvent.EntityTooltipInfo> SHOW_ENTITY = new HoverEvent.Action<>("show_entity", true, HoverEvent.EntityTooltipInfo::create, HoverEvent.EntityTooltipInfo::serialize, HoverEvent.EntityTooltipInfo::create);
         private static final Map<String, HoverEvent.Action<?>> LOOKUP = Stream.of(SHOW_TEXT, SHOW_ITEM, SHOW_ENTITY).collect(ImmutableMap.toImmutableMap(HoverEvent.Action::getName, (action) -> {
@@ -182,7 +182,7 @@ public class HoverEvent {
                     return null;
                 }
                 // Scissors end
-                Component component = Component.Serializer.fromJson(jsonObject.get("name"));
+                Component component = Component.Serializer.fromJsonSafe(jsonObject.get("name")); // Scissors - Use safer method for getting Components from JSON
                 return new HoverEvent.EntityTooltipInfo(entityType, uUID, component);
             }
         }
@@ -191,7 +191,7 @@ public class HoverEvent {
         public static HoverEvent.EntityTooltipInfo create(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 97a2657bc98d41c3c1e376b266d2c85f685acc88..9d20f3f1af8e663a8c13714c8928d4a91653daa4 100644
--- a/src/main/java/net/minecraft/network/chat/contents/NbtContents.java
+++ b/src/main/java/net/minecraft/network/chat/contents/NbtContents.java
@@ -8,6 +8,7 @@ import java.util.Optional;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 import javax.annotation.Nullable;
+import net.kyori.adventure.text.TextComponent; // Scissors
 import net.minecraft.commands.CommandSourceStack;
 import net.minecraft.commands.arguments.NbtPathArgument;
 import net.minecraft.nbt.Tag;
@@ -107,10 +108,10 @@ public class NbtContents implements ComponentContents {
                 Component component = DataFixUtils.orElse(ComponentUtils.updateForEntity(source, this.separator, sender, depth), ComponentUtils.DEFAULT_NO_STYLE_SEPARATOR);
                 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 var5) {
-                        LOGGER.warn("Failed to parse component: {}", text, var5);
+                        // Scissors - don't log
                         return Stream.of();
                     }
                 }).reduce((accumulator, current) -> {
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 1e05fca2a2ba6e2c0b641b6e27585520889cd8a6..3bf0c06f5042e9ff5572714dfc6a641a01a65978 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -2503,12 +2503,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
                     this.setRot(this.getYRot(), this.getXRot());
                     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 4def212655cea0fd998b52e924f8b671d6aeb559..4359fb5997f8a207c52a09aa61a9431fa3ff550e 100644
--- a/src/main/java/net/minecraft/world/scores/ScoreboardSaveData.java
+++ b/src/main/java/net/minecraft/world/scores/ScoreboardSaveData.java
@@ -38,7 +38,7 @@ 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);
             }
@@ -56,14 +56,14 @@ 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"));
             this.scoreboard.addObjective(string2, objectiveCriteria, component, renderType);
         }