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/*
* Copyright (c) 2019-2020 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.java;
import com.github.steveice10.mc.protocol.packet.ingame.client.ClientPluginMessagePacket;
import com.github.steveice10.mc.protocol.packet.ingame.server.ServerPluginMessagePacket;
import com.google.common.base.Charsets;
import org.geysermc.connector.common.AuthType;
import org.geysermc.connector.network.session.GeyserSession;
import org.geysermc.connector.network.translators.PacketTranslator;
import org.geysermc.connector.network.translators.Translator;
import org.geysermc.cumulus.Form;
import org.geysermc.cumulus.Forms;
import org.geysermc.cumulus.util.FormType;
import java.nio.charset.StandardCharsets;
@Translator(packet = ServerPluginMessagePacket.class)
public class JavaPluginMessageTranslator extends PacketTranslator<ServerPluginMessagePacket> {
@Override
public void translate(GeyserSession session, ServerPluginMessagePacket packet) {
// The only plugin messages it has to listen for are Floodgate plugin messages
if (session.getRemoteAuthType() != AuthType.FLOODGATE) {
return;
}
String channel = packet.getChannel();
if (channel.equals("floodgate:form")) {
byte[] data = packet.getData();
// receive: first byte is form type, second and third are the id, remaining is the form data
// respond: first and second byte id, remaining is form response data
FormType type = FormType.getByOrdinal(data[0]);
if (type == null) {
throw new NullPointerException(
"Got type " + data[0] + " which isn't a valid form type!");
}
String dataString = new String(data, 3, data.length - 3, Charsets.UTF_8);
Form form = Forms.fromJson(dataString, type);
form.setResponseHandler(response -> {
byte[] raw = response.getBytes(StandardCharsets.UTF_8);
byte[] finalData = new byte[raw.length + 2];
finalData[0] = data[1];
finalData[1] = data[2];
System.arraycopy(raw, 0, finalData, 2, raw.length);
session.sendDownstreamPacket(new ClientPluginMessagePacket(channel, finalData));
});
session.sendForm(form);
}
}
}
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