mirror of
https://github.com/ViaVersion/ViaFabric.git
synced 2024-11-08 09:40:07 +01:00
ignore invalid custom payload identifiers
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parent
9df2457a65
commit
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@ -0,0 +1,96 @@
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/*
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* MIT License
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*
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* Copyright (c) 2018 creeper123123321 and contributors
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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package com.github.creeper123123321.viafabric.mixin.client;
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import net.fabricmc.fabric.impl.network.PacketTypes;
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import net.minecraft.client.network.packet.CustomPayloadS2CPacket;
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import net.minecraft.util.Identifier;
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import net.minecraft.util.InvalidIdentifierException;
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import net.minecraft.util.PacketByteBuf;
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import org.spongepowered.asm.mixin.Mixin;
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import org.spongepowered.asm.mixin.injection.At;
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import org.spongepowered.asm.mixin.injection.Inject;
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import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
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import us.myles.ViaVersion.api.Via;
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import java.io.IOException;
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import java.nio.charset.StandardCharsets;
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import java.util.HashSet;
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import java.util.Set;
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@Mixin(CustomPayloadS2CPacket.class)
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public class MixinCustomPayloadPacket {
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@Inject(method = "read", at = @At(value = "HEAD", target = "Lnet/minecraft/network/Packet;read(Lnet/minecraft/util/PacketByteBuf;)V"))
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private void onRead(PacketByteBuf buf, CallbackInfo callbackInfo) throws IOException {
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try {
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int readerIndex = buf.readerIndex();
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Identifier identifier = buf.readIdentifier();
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buf.readerIndex(readerIndex);
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if (identifier.equals(PacketTypes.REGISTER) || identifier.equals(PacketTypes.UNREGISTER)) {
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Set<Identifier> identifiers = new HashSet();
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StringBuilder builder = new StringBuilder();
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while (buf.readerIndex() < buf.writerIndex()) {
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char c = (char) buf.readByte();
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if (c == 0 || buf.readableBytes() == 0) {
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String s = builder.toString();
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if (!s.isEmpty()) {
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try {
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identifiers.add(new Identifier(s));
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} catch (InvalidIdentifierException ex) {
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Via.getPlatform().getLogger().info("Ignoring invalid custom payload identifier in (un)register:\n" + ex.getMessage());
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}
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}
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builder = new StringBuilder();
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} else {
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builder.append(c);
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}
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}
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buf.clear();
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buf.writeIdentifier(identifier);
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boolean first = true;
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for (Identifier id : identifiers) {
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if (!first) {
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buf.writeByte(0);
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} else {
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first = false;
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}
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buf.writeBytes(id.toString().getBytes(StandardCharsets.US_ASCII));
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}
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}
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} catch (InvalidIdentifierException ex) {
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Via.getPlatform().getLogger().warning("Ignoring invalid custom payload identifier:\n" + ex.getMessage());
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buf.clear();
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buf.writeString("viafabric:invalid");
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}
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}
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}
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@ -8,7 +8,8 @@
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],
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"client": [
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"client.MixinClientConnectionChInit",
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"client.MixinMultiplayerScreen"
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"client.MixinMultiplayerScreen",
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"client.MixinCustomPayloadPacket"
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],
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"injectors": {
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"defaultRequire": 1
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