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Patch exploits (#79)

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Luna 2023-04-28 16:50:48 -03:00 committed by GitHub
parent a58e246027
commit 3bf9c85578
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4 changed files with 99 additions and 0 deletions
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31
patches/server/0042-Limit-map-decoration-text-length.patch Normal file
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@ -0,0 +1,31 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Luna <lunahatesgogle@gmail.com>
Date: Fri, 28 Apr 2023 16:29:23 -0300
Subject: [PATCH] Limit map decoration text length
diff --git a/src/main/java/net/minecraft/world/level/saveddata/maps/MapDecoration.java b/src/main/java/net/minecraft/world/level/saveddata/maps/MapDecoration.java
index 347d2914f9560a3ee8cea59444bc0dfbb7cf3456..b225f770869832775c9a8a79ffaf89e98245cc2e 100644
--- a/src/main/java/net/minecraft/world/level/saveddata/maps/MapDecoration.java
+++ b/src/main/java/net/minecraft/world/level/saveddata/maps/MapDecoration.java
@@ -2,6 +2,7 @@ package net.minecraft.world.level.saveddata.maps;
import java.util.Objects;
import javax.annotation.Nullable;
+import net.minecraft.ChatFormatting;
import net.minecraft.network.chat.Component;
import net.minecraft.util.Mth;
@@ -14,6 +15,12 @@ public class MapDecoration {
private final Component name;
public MapDecoration(MapDecoration.Type type, byte x, byte z, byte rotation, @Nullable Component text) {
+ // Scissors start - Limit decoration text length
+ if (text != null && text.getString().length() > 32) {
+ text = null;
+ }
+ // Scissors end
+
this.type = type;
this.x = x;
this.y = z;

23
patches/server/0043-Limit-map-decoration-count.patch Normal file
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@ -0,0 +1,23 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Luna <lunahatesgogle@gmail.com>
Date: Fri, 28 Apr 2023 16:34:15 -0300
Subject: [PATCH] Limit map decoration count
diff --git a/src/main/java/net/minecraft/world/level/saveddata/maps/MapItemSavedData.java b/src/main/java/net/minecraft/world/level/saveddata/maps/MapItemSavedData.java
index 25a64250ce57fe4cd90f8b95d1e003d961662152..60e013d418b1aa8c154ca9474186191aa5c9041d 100644
--- a/src/main/java/net/minecraft/world/level/saveddata/maps/MapItemSavedData.java
+++ b/src/main/java/net/minecraft/world/level/saveddata/maps/MapItemSavedData.java
@@ -356,6 +356,12 @@ public class MapItemSavedData extends SavedData {
}
private void addDecoration(MapDecoration.Type type, @Nullable LevelAccessor world, String key, double x, double z, double rotation, @Nullable Component text) {
+ // Scissors start - Limit decoration count
+ if (this.decorations.size() > 32) {
+ return;
+ }
+ // Scissors end
+
int i = 1 << this.scale;
float f = (float) (x - (double) this.centerX) / (float) i;
float f1 = (float) (z - (double) this.centerZ) / (float) i;

26
patches/server/0044-Prevent-player-banning-using-duplicate-UUIDs.patch Normal file
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@ -0,0 +1,26 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Luna <lunahatesgogle@gmail.com>
Date: Fri, 28 Apr 2023 16:44:50 -0300
Subject: [PATCH] Prevent player banning using duplicate UUIDs
diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index 3bb63a652aca3c23f5f1bbf9cb70fce6540f2e33..934c0d14bd4ac1ece0c0f6add0e3e996e85a9b93 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -1468,7 +1468,14 @@ public class ServerLevel extends Level implements WorldGenLevel {
if (entity != null) {
ServerLevel.LOGGER.warn("Force-added player with duplicate UUID {}", player.getUUID().toString());
entity.unRide();
- this.removePlayerImmediately((ServerPlayer) entity, Entity.RemovalReason.DISCARDED);
+
+ // Scissors start - Prevent player banning using duplicate UUIDs
+ if (entity instanceof ServerPlayer serverPlayer) {
+ this.removePlayerImmediately(serverPlayer, Entity.RemovalReason.DISCARDED);
+ } else {
+ entity.discard();
+ }
+ // Scissors end
}
this.entityLookup.addNewEntity(player); // Paper - rewite chunk system

19
patches/server/0045-Don-t-warn-on-duplicate-entity-UUIDs.patch Normal file
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@ -0,0 +1,19 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Luna <lunahatesgogle@gmail.com>
Date: Fri, 28 Apr 2023 16:46:00 -0300
Subject: [PATCH] Don't warn on duplicate entity UUIDs
diff --git a/src/main/java/io/papermc/paper/chunk/system/entity/EntityLookup.java b/src/main/java/io/papermc/paper/chunk/system/entity/EntityLookup.java
index 61c170555c8854b102c640b0b6a615f9f732edbf..29f46a137584a5f52f3c30b4c352d58ca61488a3 100644
--- a/src/main/java/io/papermc/paper/chunk/system/entity/EntityLookup.java
+++ b/src/main/java/io/papermc/paper/chunk/system/entity/EntityLookup.java
@@ -366,7 +366,7 @@ public final class EntityLookup implements LevelEntityGetter<Entity> {
return false;
}
if (this.entityByUUID.containsKey(entity.getUUID())) {
- LOGGER.warn("Entity uuid already exists: " + entity.getUUID() + ", mapped to " + this.entityByUUID.get(entity.getUUID()) + ", can't add " + entity);
+ // Scissors - Don't warn on duplicate entity UUIDs
return false;
}
this.entityById.put(entity.getId(), entity);