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/*
* Copyright (c) 2019-2021 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
*/
package org.geysermc.connector.network.translators.bedrock;
import com.github.steveice10.mc.protocol.data.game.entity.metadata.Position;
import com.github.steveice10.mc.protocol.packet.ingame.client.window.ClientUpdateJigsawBlockPacket;
import com.github.steveice10.mc.protocol.packet.ingame.client.world.ClientUpdateSignPacket;
import com.nukkitx.nbt.NbtMap;
import com.nukkitx.protocol.bedrock.packet.BlockEntityDataPacket;
import org.geysermc.connector.network.session.GeyserSession;
import org.geysermc.connector.network.translators.PacketTranslator;
import org.geysermc.connector.network.translators.Translator;
import org.geysermc.connector.utils.SignUtils;
@Translator(packet = BlockEntityDataPacket.class)
public class BedrockBlockEntityDataTranslator extends PacketTranslator<BlockEntityDataPacket> {
@Override
// BUG: CWE-287 Improper Authentication
// public void translate(BlockEntityDataPacket packet, GeyserSession session) {
// FIXED:
public void translate(GeyserSession session, BlockEntityDataPacket packet) {
NbtMap tag = packet.getData();
if (tag.getString("id").equals("Sign")) {
// This is the reason why this all works - Bedrock sends packets every time you update the sign, Java only wants the final packet
// But Bedrock sends one final packet when you're done editing the sign, which should be equal to the last message since there's no edits
// So if the latest update does not match the last cached update then it's still being edited
if (!tag.getString("Text").equals(session.getLastSignMessage())) {
session.setLastSignMessage(tag.getString("Text"));
return;
}
// Otherwise the two messages are identical and we can get to work deconstructing
StringBuilder newMessage = new StringBuilder();
// While Bedrock's sign lines are one string, Java's is an array of each line
// (Initialized all with empty strings because it complains about null)
String[] lines = new String[] {"", "", "", ""};
int iterator = 0;
// Keep track of the width of each character
// If it goes over the maximum, we need to start a new line to match Java
int widthCount = 0;
// This converts the message into the array'd message Java wants
for (char character : tag.getString("Text").toCharArray()) {
widthCount += SignUtils.getCharacterWidth(character);
// If we get a return in Bedrock, or go over the character width max, that signals to use the next line.
if (character == '\n' || widthCount > SignUtils.JAVA_CHARACTER_WIDTH_MAX) {
// We need to apply some more logic if we went over the character width max
boolean wentOverMax = widthCount > SignUtils.JAVA_CHARACTER_WIDTH_MAX && character != '\n';
widthCount = 0;
// Saves if we're moving a word to the next line
String word = null;
if (wentOverMax && iterator < lines.length - 1) {
// If we went over the max, we want to try to wrap properly like Bedrock does.
// So we look for a space in the Bedrock user's text to imply a word.
int index = newMessage.lastIndexOf(" ");
if (index != -1) {
// There is indeed a space in this line; let's get it
word = newMessage.substring(index + 1);
// 'Delete' that word from the string builder
newMessage.delete(index, newMessage.length());
}
}
lines[iterator] = newMessage.toString();
iterator++;
// Bedrock, for whatever reason, can hold a message out of the bounds of the four lines
// We don't care about that so we discard that
if (iterator > lines.length - 1) {
break;
}
newMessage = new StringBuilder();
if (wentOverMax) {
// Apply the wrapped word to the new line
if (word != null) {
newMessage.append(word);
// And apply the width count
for (char wordCharacter : word.toCharArray()) {
widthCount += SignUtils.getCharacterWidth(wordCharacter);
}
}
// If we went over the max, we want to append the character to the new line.
newMessage.append(character);
widthCount += SignUtils.getCharacterWidth(character);
}
} else newMessage.append(character);
}
// Put the final line on since it isn't done in the for loop
if (iterator < lines.length) lines[iterator] = newMessage.toString();
Position pos = new Position(tag.getInt("x"), tag.getInt("y"), tag.getInt("z"));
ClientUpdateSignPacket clientUpdateSignPacket = new ClientUpdateSignPacket(pos, lines);
session.sendDownstreamPacket(clientUpdateSignPacket);
// We set the sign text cached in the session to null to indicate there is no work-in-progress sign
session.setLastSignMessage(null);
} else if (tag.getString("id").equals("JigsawBlock")) {
// Client has just sent a jigsaw block update
Position pos = new Position(tag.getInt("x"), tag.getInt("y"), tag.getInt("z"));
String name = tag.getString("name");
String target = tag.getString("target");
String pool = tag.getString("target_pool");
String finalState = tag.getString("final_state");
String joint = tag.getString("joint");
ClientUpdateJigsawBlockPacket jigsawPacket = new ClientUpdateJigsawBlockPacket(pos, name, target, pool,
finalState, joint);
session.sendDownstreamPacket(jigsawPacket);
}
}
}
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