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89d51d5f29
Because this exploit has been widely known for years and has not been fixed by Mojang, we decided that it was worth allowing people to toggle it on/off due to how easy it is to make it configurable. It should be noted that this decision does not promise all future exploits will be configurable.
31 lines
1.9 KiB
Diff
31 lines
1.9 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Shane Freeder <theboyetronic@gmail.com>
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Date: Sun, 1 Aug 2021 09:49:06 +0100
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Subject: [PATCH] Fix incosistency issue with empty map items in CB
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diff --git a/src/main/java/net/minecraft/world/item/MapItem.java b/src/main/java/net/minecraft/world/item/MapItem.java
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index f643d3c06bd8fc37f6c571a19d5691694b0ce8d3..d8dd99ec8bf7444c5a3c426db3a9c13e334dc0ff 100644
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--- a/src/main/java/net/minecraft/world/item/MapItem.java
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+++ b/src/main/java/net/minecraft/world/item/MapItem.java
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@@ -69,7 +69,7 @@ public class MapItem extends ComplexItem {
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public static Integer getMapId(ItemStack stack) {
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CompoundTag nbttagcompound = stack.getTag();
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- return nbttagcompound != null && nbttagcompound.contains("map", 99) ? nbttagcompound.getInt("map") : -1; // CraftBukkit - make new maps for no tag
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+ return nbttagcompound != null && nbttagcompound.contains("map", 99) ? nbttagcompound.getInt("map") : null; // CraftBukkit - make new maps for no tag // Paper - don't return invalid ID
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}
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public static int createNewSavedData(Level world, int x, int z, int scale, boolean showIcons, boolean unlimitedTracking, ResourceKey<Level> dimension) {
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diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaMap.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaMap.java
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index 0c7280621cce9855dcc9569e0aefba77bfd555cb..0c7c67e1eea44487c52ebf650d35b3b43cd00c3a 100644
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--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaMap.java
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+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaMap.java
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@@ -133,6 +133,7 @@ class CraftMetaMap extends CraftMetaItem implements MapMeta {
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@Override
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public int getMapId() {
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+ Preconditions.checkState(this.hasMapView(), "Item does not have map associated - check hasMapView() first!"); // Paper - more friendly message
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return this.mapId;
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}
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