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302 changes: 302 additions & 0 deletions
302
core/src/main/java/org/geysermc/geyser/network/CodecProcessor.java
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core/src/main/java/org/geysermc/geyser/network/InvalidPacketHandler.java
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| /* | ||
| * Copyright (c) 2019-2024 GeyserMC. http://geysermc.org | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| * of this software and associated documentation files (the "Software"), to deal | ||
| * in the Software without restriction, including without limitation the rights | ||
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| * copies of the Software, and to permit persons to whom the Software is | ||
| * furnished to do so, subject to the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be included in | ||
| * all copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| * THE SOFTWARE. | ||
| * | ||
| * @author GeyserMC | ||
| * @link https://github.com/GeyserMC/Geyser | ||
| */ | ||
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| package org.geysermc.geyser.network; | ||
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| import io.netty.channel.ChannelHandlerContext; | ||
| import io.netty.channel.ChannelInboundHandlerAdapter; | ||
| import lombok.RequiredArgsConstructor; | ||
| import org.geysermc.geyser.session.GeyserSession; | ||
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| import java.util.stream.Stream; | ||
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| @RequiredArgsConstructor | ||
| public class InvalidPacketHandler extends ChannelInboundHandlerAdapter { | ||
| public static final String NAME = "rak-error-handler"; | ||
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| private final GeyserSession session; | ||
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| @Override | ||
| public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception { | ||
| Throwable rootCause = Stream.iterate(cause, Throwable::getCause) | ||
| .filter(element -> element.getCause() == null) | ||
| .findFirst() | ||
| .orElse(cause); | ||
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| if (!(rootCause instanceof IllegalArgumentException)) { | ||
| super.exceptionCaught(ctx, cause); | ||
| return; | ||
| } | ||
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| // Kick users that try to send illegal packets | ||
| session.getGeyser().getLogger().warning(rootCause.getMessage()); | ||
| session.disconnect("Invalid packet received!"); | ||
| } | ||
| } |
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