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57 changes: 57 additions & 0 deletions
57
src/main/java/net/wurstclient/mixin/ControlsListWidgetMixin.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,57 @@ | ||
| /* | ||
| * Copyright (c) 2014-2024 Wurst-Imperium and contributors. | ||
| * | ||
| * This source code is subject to the terms of the GNU General Public | ||
| * License, version 3. If a copy of the GPL was not distributed with this | ||
| * file, You can obtain one at: https://www.gnu.org/licenses/gpl-3.0.txt | ||
| */ | ||
| package net.wurstclient.mixin; | ||
|
|
||
| import org.spongepowered.asm.mixin.Mixin; | ||
| import org.spongepowered.asm.mixin.injection.At; | ||
|
|
||
| import com.llamalad7.mixinextras.injector.wrapoperation.Operation; | ||
| import com.llamalad7.mixinextras.injector.wrapoperation.WrapOperation; | ||
|
|
||
| import net.minecraft.client.MinecraftClient; | ||
| import net.minecraft.client.gui.screen.option.ControlsListWidget; | ||
| import net.minecraft.client.gui.widget.ElementListWidget; | ||
| import net.minecraft.client.gui.widget.EntryListWidget; | ||
| import net.minecraft.text.Text; | ||
| import net.minecraft.text.TranslatableTextContent; | ||
| import net.wurstclient.WurstClient; | ||
|
|
||
| @Mixin(ControlsListWidget.class) | ||
| public abstract class ControlsListWidgetMixin | ||
| extends ElementListWidget<ControlsListWidget.Entry> | ||
| { | ||
| public ControlsListWidgetMixin(WurstClient wurst, MinecraftClient client, | ||
| int width, int height, int y, int itemHeight) | ||
| { | ||
| super(client, width, height, y, itemHeight); | ||
| } | ||
|
|
||
| /** | ||
| * Prevents Wurst's zoom keybind from being added to the controls list. | ||
| */ | ||
| @WrapOperation(at = @At(value = "INVOKE", | ||
| target = "Lnet/minecraft/client/gui/screen/option/ControlsListWidget;addEntry(Lnet/minecraft/client/gui/widget/EntryListWidget$Entry;)I", | ||
| ordinal = 1), | ||
| method = "<init>(Lnet/minecraft/client/gui/screen/option/KeybindsScreen;Lnet/minecraft/client/MinecraftClient;)V") | ||
| private int dontAddZoomEntry(ControlsListWidget instance, | ||
| EntryListWidget.Entry<?> entry, Operation<Integer> original) | ||
| { | ||
| if(!(entry instanceof ControlsListWidget.KeyBindingEntry kbEntry)) | ||
| return original.call(instance, entry); | ||
|
|
||
| Text name = kbEntry.bindingName; | ||
| if(name == null || !(name | ||
| .getContent() instanceof TranslatableTextContent trContent)) | ||
| return original.call(instance, entry); | ||
|
|
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| if(!"key.wurst.zoom".equals(trContent.getKey())) | ||
| return original.call(instance, entry); | ||
|
|
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| return 0; | ||
| } | ||
| } |
56 changes: 56 additions & 0 deletions
56
src/main/java/net/wurstclient/mixin/KeybindTextContentMixin.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| /* | ||
| * Copyright (c) 2014-2024 Wurst-Imperium and contributors. | ||
| * | ||
| * This source code is subject to the terms of the GNU General Public | ||
| * License, version 3. If a copy of the GPL was not distributed with this | ||
| * file, You can obtain one at: https://www.gnu.org/licenses/gpl-3.0.txt | ||
| */ | ||
| package net.wurstclient.mixin; | ||
|
|
||
| import org.spongepowered.asm.mixin.Final; | ||
| import org.spongepowered.asm.mixin.Mixin; | ||
| import org.spongepowered.asm.mixin.Shadow; | ||
| import org.spongepowered.asm.mixin.injection.At; | ||
| import org.spongepowered.asm.mixin.injection.Inject; | ||
| import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable; | ||
|
|
||
| import net.minecraft.text.KeybindTextContent; | ||
| import net.minecraft.text.Text; | ||
| import net.minecraft.text.TextContent; | ||
|
|
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| @Mixin(KeybindTextContent.class) | ||
| public abstract class KeybindTextContentMixin implements TextContent | ||
| { | ||
| @Shadow | ||
| @Final | ||
| private String key; | ||
|
|
||
| /** | ||
| * Ensures that any chat messages, written books, signs, etc. cannot resolve | ||
| * Wurst-related keybinds. | ||
| * | ||
| * <p> | ||
| * Fixes at least one security vulnerability affecting Minecraft 1.20 and | ||
| * later versions, where the server can detect the presence of Wurst by | ||
| * abusing Minecraft's sign editing feature. When a player edits a sign, any | ||
| * translated text and keybind text components on that sign are resolved by | ||
| * the client and sent back to the server as plain text. This allows the | ||
| * server to detect the presence of non-vanilla keybinds, such as Wurst's | ||
| * zoom keybind. | ||
| * | ||
| * <p> | ||
| * It is likely that similar vulnerabilities exist or will exist in other | ||
| * parts of the game, such as chat messages and written books. Mojang has a | ||
| * long history of failing to properly secure their text component system | ||
| * (see BookHack, OP-Sign, BookDupe). Therefore it's best to cut off this | ||
| * entire attack vector at the source. | ||
| */ | ||
| @Inject(at = @At("RETURN"), | ||
| method = "getTranslated()Lnet/minecraft/text/Text;", | ||
| cancellable = true) | ||
| private void onGetTranslated(CallbackInfoReturnable<Text> cir) | ||
| { | ||
| if(key != null && key.contains("wurst")) | ||
| cir.setReturnValue(Text.literal(key)); | ||
| } | ||
| } |
68 changes: 68 additions & 0 deletions
68
src/main/java/net/wurstclient/mixin/TranslatableTextContentMixin.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| /* | ||
| * Copyright (c) 2014-2024 Wurst-Imperium and contributors. | ||
| * | ||
| * This source code is subject to the terms of the GNU General Public | ||
| * License, version 3. If a copy of the GPL was not distributed with this | ||
| * file, You can obtain one at: https://www.gnu.org/licenses/gpl-3.0.txt | ||
| */ | ||
| package net.wurstclient.mixin; | ||
|
|
||
| import org.spongepowered.asm.mixin.Mixin; | ||
| import org.spongepowered.asm.mixin.injection.At; | ||
|
|
||
| import com.llamalad7.mixinextras.injector.wrapoperation.Operation; | ||
| import com.llamalad7.mixinextras.injector.wrapoperation.WrapOperation; | ||
|
|
||
| import net.minecraft.text.TextContent; | ||
| import net.minecraft.text.TranslatableTextContent; | ||
| import net.minecraft.util.Language; | ||
|
|
||
| @Mixin(TranslatableTextContent.class) | ||
| public abstract class TranslatableTextContentMixin implements TextContent | ||
| { | ||
| /** | ||
| * Ensures that any chat messages, written books, signs, etc. cannot resolve | ||
| * Wurst-related translation keys. | ||
| * | ||
| * <p> | ||
| * Fixes at least one security vulnerability affecting Minecraft 1.20 and | ||
| * later versions, where the server can detect the presence of Wurst by | ||
| * abusing Minecraft's sign editing feature. When a player edits a sign, any | ||
| * translated text and keybind text components on that sign are resolved by | ||
| * the client and sent back to the server as plain text. This allows the | ||
| * server to detect the presence of non-vanilla translation keys. | ||
| * | ||
| * <p> | ||
| * It is likely that similar vulnerabilities exist or will exist in other | ||
| * parts of the game, such as chat messages and written books. Mojang has a | ||
| * long history of failing to properly secure their text component system | ||
| * (see BookHack, OP-Sign, BookDupe). Therefore it's best to cut off this | ||
| * entire attack vector at the source. | ||
| */ | ||
| @WrapOperation(at = @At(value = "INVOKE", | ||
| target = "Lnet/minecraft/util/Language;get(Ljava/lang/String;)Ljava/lang/String;", | ||
| ordinal = 0), method = "updateTranslations()V") | ||
| private String translate(Language instance, String key, | ||
| Operation<String> original) | ||
| { | ||
| if(key != null && key.contains("wurst")) | ||
| return key; | ||
|
|
||
| return original.call(instance, key); | ||
| } | ||
|
|
||
| /** | ||
| * Same as above, but for translatable text components with a fallback. | ||
| */ | ||
| @WrapOperation(at = @At(value = "INVOKE", | ||
| target = "Lnet/minecraft/util/Language;get(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;", | ||
| ordinal = 0), method = "updateTranslations()V") | ||
| private String translateWithFallback(Language instance, String key, | ||
| String fallback, Operation<String> original) | ||
| { | ||
| if(key != null && key.contains("wurst")) | ||
| return fallback; | ||
|
|
||
| return original.call(instance, key, fallback); | ||
| } | ||
| } |
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This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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