Scissors/patches/server/0053-Add-depth-limit-to-Component-deserializer.patch

151 lines
8.4 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Luna <lunahatesgogle@gmail.com>
Date: Wed, 31 May 2023 20:44:20 -0300
Subject: [PATCH] Add depth limit to Component deserializer
diff --git a/src/main/java/com/github/atlasmediagroup/scissors/ScissorsConfig.java b/src/main/java/com/github/atlasmediagroup/scissors/ScissorsConfig.java
index bb58d90e9d676761a43a12cbc1c3b687d00654b1..74f33cba7d713eddca5a58a2b33cad357792145e 100644
--- a/src/main/java/com/github/atlasmediagroup/scissors/ScissorsConfig.java
+++ b/src/main/java/com/github/atlasmediagroup/scissors/ScissorsConfig.java
@@ -65,8 +65,8 @@ public class ScissorsConfig
config.options().header(HEADER);
config.options().copyDefaults(true);
- version = getInt("config-version", 3);
- set("config-version", 3);
+ version = getInt("config-version", 4);
+ set("config-version", 4);
readConfig(ScissorsConfig.class, null);
}
@@ -146,6 +146,12 @@ public class ScissorsConfig
disableGameMasterBlocks = getBoolean("disableGameMasterBlocks", false);
}
+ public static int componentDepthLimit = 128;
+ private static void componentDepthLimit()
+ {
+ componentDepthLimit = getInt("componentDepthLimit", 128);
+ }
+
private static void set(String path, Object val)
{
config.set(path, val);
diff --git a/src/main/java/net/minecraft/network/chat/Component.java b/src/main/java/net/minecraft/network/chat/Component.java
index 474ed00c09d58a7796cd543c9bcf8752e2f9f742..68e99223b0b084bdfdb9990780150bbc7d8ad8ea 100644
--- a/src/main/java/net/minecraft/network/chat/Component.java
+++ b/src/main/java/net/minecraft/network/chat/Component.java
@@ -1,5 +1,6 @@
package net.minecraft.network.chat;
+import com.github.atlasmediagroup.scissors.ScissorsConfig; // Scissors
import com.google.common.collect.Lists;
import io.papermc.paper.adventure.AdventureComponent; // Paper
import com.google.gson.Gson;
@@ -33,6 +34,7 @@ import net.minecraft.util.GsonHelper;
import net.minecraft.util.LowerCaseEnumTypeAdapterFactory;
// CraftBukkit start
import com.google.common.collect.Streams;
+import java.util.regex.Pattern; // Scissors
import java.util.stream.Stream;
// CraftBukkit end
@@ -192,27 +194,31 @@ public interface Component extends Message, FormattedText, Iterable<Component> {
throw new IllegalStateException("Couldn't get field 'lineStart' for JsonReader", nosuchfieldexception);
}
});
+ private static final Pattern PLACEHOLDER_PATTERN = Pattern.compile("%[0-9]+\\$s"); // Scissors
public Serializer() {}
- public MutableComponent deserialize(JsonElement jsonelement, Type type, JsonDeserializationContext jsondeserializationcontext) throws JsonParseException {
+ // Scissors start
+ private MutableComponent deserialize(JsonElement jsonelement, JsonDeserializationContext jsondeserializationcontext, int depth) throws JsonParseException {
+ if (depth > ScissorsConfig.componentDepthLimit) {
+ throw new JsonParseException("Depth limit exceeded");
+ }
+
if (jsonelement.isJsonPrimitive()) {
return new TextComponent(jsonelement.getAsString());
} else if (!jsonelement.isJsonObject()) {
if (jsonelement.isJsonArray()) {
JsonArray jsonarray = jsonelement.getAsJsonArray();
- // Scissors start
if (jsonarray.size() <= 0) {
throw new JsonParseException("Unexpected empty array of components");
}
- // Scissors end
MutableComponent ichatmutablecomponent = null;
Iterator iterator = jsonarray.iterator();
while (iterator.hasNext()) {
JsonElement jsonelement1 = (JsonElement) iterator.next();
- MutableComponent ichatmutablecomponent1 = this.deserialize(jsonelement1, jsonelement1.getClass(), jsondeserializationcontext);
+ MutableComponent ichatmutablecomponent1 = this.deserialize(jsonelement1, jsondeserializationcontext, depth + 1);
if (ichatmutablecomponent == null) {
ichatmutablecomponent = ichatmutablecomponent1;
@@ -236,12 +242,17 @@ public interface Component extends Message, FormattedText, Iterable<Component> {
if (jsonobject.has("translate")) {
s = GsonHelper.getAsString(jsonobject, "translate");
+
+ // Penalize depth for placeholders in translate & fallback
+ long translate_placeholders = PLACEHOLDER_PATTERN.matcher(s).results().count();
+ int penalty = (int)translate_placeholders * 12;
+
if (jsonobject.has("with")) {
JsonArray jsonarray1 = GsonHelper.getAsJsonArray(jsonobject, "with");
Object[] aobject = new Object[jsonarray1.size()];
for (int i = 0; i < aobject.length; ++i) {
- aobject[i] = this.deserialize(jsonarray1.get(i), type, jsondeserializationcontext);
+ aobject[i] = this.deserialize(jsonarray1.get(i), jsondeserializationcontext, depth + 1 + penalty);
if (aobject[i] instanceof TextComponent) {
TextComponent chatcomponenttext = (TextComponent) aobject[i];
@@ -264,7 +275,7 @@ public interface Component extends Message, FormattedText, Iterable<Component> {
object = new ScoreComponent(GsonHelper.getAsString(jsonobject1, "name"), GsonHelper.getAsString(jsonobject1, "objective"));
} else if (jsonobject.has("selector")) {
- Optional<Component> optional = this.parseSeparator(type, jsondeserializationcontext, jsonobject);
+ Optional<Component> optional = this.parseSeparator(jsondeserializationcontext, jsonobject, depth + 1);
object = new SelectorComponent(GsonHelper.getAsString(jsonobject, "selector"), optional);
} else if (jsonobject.has("keybind")) {
@@ -275,7 +286,7 @@ public interface Component extends Message, FormattedText, Iterable<Component> {
}
s = GsonHelper.getAsString(jsonobject, "nbt");
- Optional<Component> optional1 = this.parseSeparator(type, jsondeserializationcontext, jsonobject);
+ Optional<Component> optional1 = this.parseSeparator(jsondeserializationcontext, jsonobject, depth + 1);
boolean flag = GsonHelper.getAsBoolean(jsonobject, "interpret", false);
if (jsonobject.has("block")) {
@@ -300,7 +311,7 @@ public interface Component extends Message, FormattedText, Iterable<Component> {
}
for (int j = 0; j < jsonarray2.size(); ++j) {
- ((MutableComponent) object).append(this.deserialize(jsonarray2.get(j), type, jsondeserializationcontext));
+ ((MutableComponent) object).append(this.deserialize(jsonarray2.get(j), jsondeserializationcontext, depth + 1));
}
}
@@ -309,8 +320,13 @@ public interface Component extends Message, FormattedText, Iterable<Component> {
}
}
- private Optional<Component> parseSeparator(Type type, JsonDeserializationContext context, JsonObject json) {
- return json.has("separator") ? Optional.of(this.deserialize(json.get("separator"), type, context)) : Optional.empty();
+ public MutableComponent deserialize(JsonElement jsonelement, Type type, JsonDeserializationContext jsondeserializationcontext) throws JsonParseException {
+ return this.deserialize(jsonelement, jsondeserializationcontext, 1);
+ }
+
+ private Optional<Component> parseSeparator(JsonDeserializationContext context, JsonObject json, int depth) {
+ return json.has("separator") ? Optional.of(this.deserialize(json.get("separator"), context, depth + 1)) : Optional.empty();
+ // Scissors end
}
private void serializeStyle(Style style, JsonObject json, JsonSerializationContext context) {