135 lines
5.5 KiB
Java
135 lines
5.5 KiB
Java
/*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package fr.neatmonster.nocheatplus.checks.net.protocollib;
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import org.bukkit.entity.Player;
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import org.bukkit.plugin.Plugin;
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import com.comphenix.protocol.PacketType;
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import com.comphenix.protocol.events.ListenerPriority;
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import com.comphenix.protocol.events.PacketContainer;
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import com.comphenix.protocol.events.PacketEvent;
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import com.comphenix.protocol.reflect.StructureModifier;
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import fr.neatmonster.nocheatplus.NCPAPIProvider;
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import fr.neatmonster.nocheatplus.checks.CheckType;
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import fr.neatmonster.nocheatplus.checks.net.NetData;
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import fr.neatmonster.nocheatplus.checks.net.model.CountableLocation;
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import fr.neatmonster.nocheatplus.logging.Streams;
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import fr.neatmonster.nocheatplus.players.DataManager;
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import fr.neatmonster.nocheatplus.players.IPlayerData;
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public class OutgoingPosition extends BaseAdapter {
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public static final int indexX = 0;
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public static final int indexY = 1;
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public static final int indexZ = 2;
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public static final int indexYaw = 0;
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public static final int indexPitch = 1;
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private final Integer ID_OUTGOING_POSITION_UNTRACKED = counters.registerKey("packet.outgoing_position.untracked");
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private boolean hasTeleportId = true;
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public OutgoingPosition(Plugin plugin) {
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// PacketPlayInFlying[3, legacy: 10]
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super(plugin, ListenerPriority.HIGHEST, new PacketType[] {
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PacketType.Play.Server.POSITION
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// TODO: POSITION_LOOK ??
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});
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}
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@Override
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public void onPacketSending(PacketEvent event) {
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if (event.isCancelled()) {
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return;
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}
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final long time = System.currentTimeMillis();
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final Player player = event.getPlayer();
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final IPlayerData pData = DataManager.getPlayerData(player);
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// TODO: In future multiple checks might use this (!)
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if (pData.isCheckActive(CheckType.NET_FLYINGFREQUENCY, player)) {
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interpretPacket(player, event.getPacket(), time,
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pData.getGenericInstance(NetData.class),
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pData.isDebugActive(CheckType.NET_FLYINGFREQUENCY));
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}
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}
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private void interpretPacket(final Player player, final PacketContainer packet,
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final long time, final NetData data, final boolean debug) {
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final StructureModifier<Double> doubles = packet.getDoubles();
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final StructureModifier<Float> floats = packet.getFloat();
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if (doubles.size() != 3 || floats.size() != 2) {
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packetMismatch(packet);
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return;
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}
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// TODO: Detect/skip data with relative coordinates.
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// TODO: Concept: force KeepAlive vs. set expected coordinates in Bukkit events.
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final double x = doubles.read(indexX);
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final double y = doubles.read(indexY);
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final double z = doubles.read(indexZ);
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final float yaw = floats.read(indexYaw);
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final float pitch = floats.read(indexPitch);
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Integer teleportId = Integer.MIN_VALUE;
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if (hasTeleportId) {
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try {
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final StructureModifier<Integer> integers = packet.getIntegers();
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if (integers.size() == 1) {
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// Accept as id.
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teleportId = integers.read(0);
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if (teleportId == null) {
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teleportId = Integer.MIN_VALUE;
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}
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if (teleportId != Integer.MIN_VALUE && debug) {
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debug(player, "Outgoing confirm teleport id: " + teleportId);
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}
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}
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else {
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hasTeleportId = false;
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NCPAPIProvider.getNoCheatPlusAPI().getLogManager().info(Streams.STATUS, "PacketPlayOutPosition: Teleport confirm id not available, field mismatch: " + integers.size());
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}
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}
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catch (Throwable t) {
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hasTeleportId = false;
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NCPAPIProvider.getNoCheatPlusAPI().getLogManager().info(Streams.STATUS, "PacketPlayOutPosition: Teleport confirm id not available.");
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}
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}
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final CountableLocation packetData = data.teleportQueue.onOutgoingTeleport(x, y, z, yaw, pitch, teleportId);
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if (packetData == null) {
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// Add counter for untracked (by Bukkit API) outgoing teleport.
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// TODO: There may be other cases which are indicated by Bukkit API events.
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counters.add(ID_OUTGOING_POSITION_UNTRACKED, 1);
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if (debug) {
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debug(player, "Untracked outgoing position: " + x + ", " + y + ", " + z + " (yaw=" + yaw + ", pitch=" + pitch + ").");
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}
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}
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else {
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if (debug) {
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debug(player, "Expect ACK on outgoing position: " + packetData);
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}
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}
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}
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private void packetMismatch(PacketContainer packet) {
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// TODO: What? Add to counters?
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}
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}
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