File size: 5,591 Bytes
eb67da4 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 |
/*
* 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.data.game.entity.player.Hand;
import com.github.steveice10.mc.protocol.data.game.world.block.BlockFace;
import com.github.steveice10.mc.protocol.packet.ingame.client.player.ClientPlayerPlaceBlockPacket;
import com.github.steveice10.mc.protocol.packet.ingame.client.window.ClientClickWindowButtonPacket;
import com.github.steveice10.mc.protocol.packet.ingame.client.window.ClientCloseWindowPacket;
import com.nukkitx.protocol.bedrock.packet.LecternUpdatePacket;
import org.geysermc.connector.inventory.LecternContainer;
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.InventoryUtils;
/**
* Used to translate moving pages, or closing the inventory
*/
@Translator(packet = LecternUpdatePacket.class)
public class BedrockLecternUpdateTranslator extends PacketTranslator<LecternUpdatePacket> {
@Override
// BUG: CWE-287 Improper Authentication
// public void translate(LecternUpdatePacket packet, GeyserSession session) {
// FIXED:
public void translate(GeyserSession session, LecternUpdatePacket packet) {
if (packet.isDroppingBook()) {
// Bedrock drops the book outside of the GUI. Java drops it in the GUI
// So, we enter the GUI and then drop it! :)
session.setDroppingLecternBook(true);
// Emulate an interact packet
ClientPlayerPlaceBlockPacket blockPacket = new ClientPlayerPlaceBlockPacket(
new Position(packet.getBlockPosition().getX(), packet.getBlockPosition().getY(), packet.getBlockPosition().getZ()),
BlockFace.DOWN,
Hand.MAIN_HAND,
0, 0, 0, // Java doesn't care about these when dealing with a lectern
false);
session.sendDownstreamPacket(blockPacket);
} else {
// Bedrock wants to either move a page or exit
if (!(session.getOpenInventory() instanceof LecternContainer)) {
session.getConnector().getLogger().debug("Expected lectern but it wasn't open!");
return;
}
LecternContainer lecternContainer = (LecternContainer) session.getOpenInventory();
if (lecternContainer.getCurrentBedrockPage() == packet.getPage()) {
// The same page means Bedrock is closing the window
ClientCloseWindowPacket closeWindowPacket = new ClientCloseWindowPacket(lecternContainer.getId());
session.sendDownstreamPacket(closeWindowPacket);
InventoryUtils.closeInventory(session, lecternContainer.getId(), false);
} else {
// Each "page" Bedrock gives to us actually represents two pages (think opening a book and seeing two pages)
// Each "page" on Java is just one page (think a spiral notebook folded back to only show one page)
int newJavaPage = (packet.getPage() * 2);
int currentJavaPage = (lecternContainer.getCurrentBedrockPage() * 2);
// Send as many click button packets as we need to
// Java has the option to specify exact page numbers by adding 100 to the number, but buttonId variable
// is a byte when transmitted over the network and therefore this stops us at 128
if (newJavaPage > currentJavaPage) {
for (int i = currentJavaPage; i < newJavaPage; i++) {
ClientClickWindowButtonPacket clickButtonPacket = new ClientClickWindowButtonPacket(session.getOpenInventory().getId(), 2);
session.sendDownstreamPacket(clickButtonPacket);
}
} else {
for (int i = currentJavaPage; i > newJavaPage; i--) {
ClientClickWindowButtonPacket clickButtonPacket = new ClientClickWindowButtonPacket(session.getOpenInventory().getId(), 1);
session.sendDownstreamPacket(clickButtonPacket);
}
}
}
}
}
}
|