modernuo/Projects/Server/Network/PacketHandler.cs
Kamron Batman 6f444488a5
fix: Fixes crashing due to bad packet assumptions. (#1829)
### Summary
- Fixes various exploits that can crash the shard when the client misbehaves.
- Clients will now be disconnected if they send packets that are marked as out of game only (new flag), while they are in-game.


> [!Note]
> **Developer Note**
> Added an `OutOfGameOnly` which should be used to flag packets as only available out of the game.
> This is the opposite of, yet not the converse to `InGameOnly`.
2024-06-07 18:08:07 -07:00

52 lines
2 KiB
C#

/*************************************************************************
* ModernUO *
* Copyright 2019-2023 - ModernUO Development Team *
* Email: hi@modernuo.com *
* File: PacketHandler.cs *
* *
* This program is free software: you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation, either version 3 of the License, or *
* (at your option) any later version. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
*************************************************************************/
using System.Buffers;
namespace Server.Network;
public unsafe class PacketHandler
{
private readonly int _length;
public PacketHandler(
int packetID, delegate*<NetState, SpanReader, void> onReceive,
int length = 0, bool inGameOnly = false, bool outGameOnly = false
) : this(packetID, length, inGameOnly, outGameOnly, onReceive)
{
}
public PacketHandler(int packetID, int length, bool inGameOnly, bool outGameOnly, delegate*<NetState, SpanReader, void> onReceive)
{
_length = length;
PacketID = packetID;
InGameOnly = inGameOnly;
OutOfGameOnly = outGameOnly;
OnReceive = onReceive;
}
public int PacketID { get; }
public virtual int GetLength(NetState ns) => _length;
public delegate*<NetState, SpanReader, void> OnReceive { get; }
public delegate*<int, NetState, bool> ThrottleCallback { get; set; }
public bool InGameOnly { get; }
public bool OutOfGameOnly { get; }
}