mirror of
https://bitbucket.org/Ioncannon/project-meteor-server.git
synced 2025-06-11 06:54:43 +02:00
Moved packet structures to common.
This commit is contained in:
Filip Maj
parent
d5f0cbef8c
commit
c67f74130f
169 changed files with 3939 additions and 919 deletions
361
FFXIVClassic Common Class Lib/BasePacket.cs
Normal file
361
FFXIVClassic Common Class Lib/BasePacket.cs
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@ -0,0 +1,361 @@
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.IO;
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using System.Runtime.InteropServices;
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using NLog;
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using NLog.Targets;
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namespace FFXIVClassic.Common
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{
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[StructLayout(LayoutKind.Sequential)]
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public struct BasePacketHeader
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{
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public byte isAuthenticated;
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public byte isCompressed;
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public ushort connectionType;
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public ushort packetSize;
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public ushort numSubpackets;
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public ulong timestamp; //Miliseconds
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}
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public class BasePacket
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{
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public const int TYPE_ZONE = 1;
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public const int TYPE_CHAT = 2;
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public const int BASEPACKET_SIZE = 0x10;
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private static readonly Logger logger = LogManager.GetCurrentClassLogger();
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public byte[] data;
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public BasePacketHeader header;
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//Loads a sniffed packet from a file
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public unsafe BasePacket(string path)
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{
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var bytes = File.ReadAllBytes(path);
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if (bytes.Length < BASEPACKET_SIZE)
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throw new OverflowException("Packet Error: Packet was too small");
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fixed (byte* pdata = &bytes[0])
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{
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header = (BasePacketHeader) Marshal.PtrToStructure(new IntPtr(pdata), typeof(BasePacketHeader));
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}
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if (bytes.Length < header.packetSize)
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throw new OverflowException("Packet Error: Packet size didn't equal given size");
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int packetSize = header.packetSize;
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if (packetSize - BASEPACKET_SIZE != 0)
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{
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data = new byte[packetSize - BASEPACKET_SIZE];
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Array.Copy(bytes, BASEPACKET_SIZE, data, 0, packetSize - BASEPACKET_SIZE);
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}
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else
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data = new byte[0];
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}
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//Loads a sniffed packet from a byte array
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public unsafe BasePacket(byte[] bytes)
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{
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if (bytes.Length < BASEPACKET_SIZE)
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throw new OverflowException("Packet Error: Packet was too small");
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fixed (byte* pdata = &bytes[0])
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{
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header = (BasePacketHeader) Marshal.PtrToStructure(new IntPtr(pdata), typeof(BasePacketHeader));
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}
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if (bytes.Length < header.packetSize)
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throw new OverflowException("Packet Error: Packet size didn't equal given size");
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int packetSize = header.packetSize;
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data = new byte[packetSize - BASEPACKET_SIZE];
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Array.Copy(bytes, BASEPACKET_SIZE, data, 0, packetSize - BASEPACKET_SIZE);
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}
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public unsafe BasePacket(byte[] bytes, ref int offset)
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{
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if (bytes.Length < offset + BASEPACKET_SIZE)
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throw new OverflowException("Packet Error: Packet was too small");
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fixed (byte* pdata = &bytes[offset])
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{
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header = (BasePacketHeader) Marshal.PtrToStructure(new IntPtr(pdata), typeof(BasePacketHeader));
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}
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int packetSize = header.packetSize;
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if (bytes.Length < offset + header.packetSize)
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throw new OverflowException("Packet Error: Packet size didn't equal given size");
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data = new byte[packetSize - BASEPACKET_SIZE];
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Array.Copy(bytes, offset + BASEPACKET_SIZE, data, 0, packetSize - BASEPACKET_SIZE);
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offset += packetSize;
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}
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public BasePacket(BasePacketHeader header, byte[] data)
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{
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this.header = header;
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this.data = data;
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}
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public List<SubPacket> GetSubpackets()
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{
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var subpackets = new List<SubPacket>(header.numSubpackets);
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var offset = 0;
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while (offset < data.Length)
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subpackets.Add(new SubPacket(data, ref offset));
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return subpackets;
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}
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public static unsafe BasePacketHeader GetHeader(byte[] bytes)
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{
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BasePacketHeader header;
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if (bytes.Length < BASEPACKET_SIZE)
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throw new OverflowException("Packet Error: Packet was too small");
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fixed (byte* pdata = &bytes[0])
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{
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header = (BasePacketHeader) Marshal.PtrToStructure(new IntPtr(pdata), typeof(BasePacketHeader));
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}
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return header;
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}
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public byte[] GetHeaderBytes()
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{
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var size = Marshal.SizeOf(header);
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var arr = new byte[size];
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var ptr = Marshal.AllocHGlobal(size);
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Marshal.StructureToPtr(header, ptr, true);
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Marshal.Copy(ptr, arr, 0, size);
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Marshal.FreeHGlobal(ptr);
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return arr;
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}
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public byte[] GetPacketBytes()
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{
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var outBytes = new byte[header.packetSize];
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Array.Copy(GetHeaderBytes(), 0, outBytes, 0, BASEPACKET_SIZE);
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Array.Copy(data, 0, outBytes, BASEPACKET_SIZE, data.Length);
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return outBytes;
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}
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//Replaces all instances of the sniffed actorID with the given one
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public void ReplaceActorID(uint actorID)
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{
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using (var mem = new MemoryStream(data))
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{
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using (var binWriter = new BinaryWriter(mem))
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{
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using (var binreader = new BinaryReader(mem))
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{
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while (binreader.BaseStream.Position + 4 < data.Length)
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{
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var read = binreader.ReadUInt32();
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if (read == 0x029B2941 || read == 0x02977DC7 || read == 0x0297D2C8 || read == 0x0230d573 ||
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read == 0x23317df || read == 0x23344a3 || read == 0x1730bdb || read == 0x6c)
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//Original ID
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{
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binWriter.BaseStream.Seek(binreader.BaseStream.Position - 0x4, SeekOrigin.Begin);
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binWriter.Write(actorID);
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}
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}
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}
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}
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}
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}
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//Replaces all instances of the sniffed actorID with the given one
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public void ReplaceActorID(uint fromActorID, uint actorID)
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{
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using (var mem = new MemoryStream(data))
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{
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using (var binWriter = new BinaryWriter(mem))
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{
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using (var binreader = new BinaryReader(mem))
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{
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while (binreader.BaseStream.Position + 4 < data.Length)
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{
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var read = binreader.ReadUInt32();
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if (read == fromActorID) //Original ID
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{
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binWriter.BaseStream.Seek(binreader.BaseStream.Position - 0x4, SeekOrigin.Begin);
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binWriter.Write(actorID);
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}
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}
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}
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}
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}
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}
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public void DebugPrintPacket()
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{
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#if DEBUG
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logger.ColorDebug(
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string.Format("IsAuth:{0} IsEncrypted:{1}, Size:0x{2:X}, NumSubpackets:{3}{4}{5}",
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header.isAuthenticated, header.isCompressed, header.packetSize, header.numSubpackets,
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Environment.NewLine, Utils.ByteArrayToHex(GetHeaderBytes())), ConsoleOutputColor.DarkYellow);
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foreach (var sub in GetSubpackets())
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{
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sub.DebugPrintSubPacket();
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}
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#endif
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}
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#region Utility Functions
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public static BasePacket CreatePacket(List<SubPacket> subpackets, bool isAuthed, bool isCompressed)
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{
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//Create Header
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var header = new BasePacketHeader();
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byte[] data = null;
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header.isAuthenticated = isAuthed ? (byte) 1 : (byte) 0;
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header.isCompressed = isCompressed ? (byte) 1 : (byte) 0;
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header.numSubpackets = (ushort) subpackets.Count;
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header.packetSize = BASEPACKET_SIZE;
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header.timestamp = Utils.MilisUnixTimeStampUTC();
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//Get packet size
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foreach (var subpacket in subpackets)
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header.packetSize += subpacket.header.subpacketSize;
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data = new byte[header.packetSize - 0x10];
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//Add Subpackets
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var offset = 0;
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foreach (var subpacket in subpackets)
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{
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var subpacketData = subpacket.GetBytes();
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Array.Copy(subpacketData, 0, data, offset, subpacketData.Length);
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offset += (ushort) subpacketData.Length;
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}
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Debug.Assert(data != null && offset == data.Length && header.packetSize == 0x10 + offset);
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var packet = new BasePacket(header, data);
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return packet;
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}
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public static BasePacket CreatePacket(SubPacket subpacket, bool isAuthed, bool isCompressed)
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{
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//Create Header
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var header = new BasePacketHeader();
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byte[] data = null;
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header.isAuthenticated = isAuthed ? (byte) 1 : (byte) 0;
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header.isCompressed = isCompressed ? (byte) 1 : (byte) 0;
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header.numSubpackets = 1;
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header.packetSize = BASEPACKET_SIZE;
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header.timestamp = Utils.MilisUnixTimeStampUTC();
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//Get packet size
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header.packetSize += subpacket.header.subpacketSize;
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data = new byte[header.packetSize - 0x10];
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//Add Subpackets
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var subpacketData = subpacket.GetBytes();
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Array.Copy(subpacketData, 0, data, 0, subpacketData.Length);
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Debug.Assert(data != null);
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var packet = new BasePacket(header, data);
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return packet;
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}
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public static BasePacket CreatePacket(byte[] data, bool isAuthed, bool isCompressed)
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{
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Debug.Assert(data != null);
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//Create Header
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var header = new BasePacketHeader();
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header.isAuthenticated = isAuthed ? (byte) 1 : (byte) 0;
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header.isCompressed = isCompressed ? (byte) 1 : (byte) 0;
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header.numSubpackets = 1;
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header.packetSize = BASEPACKET_SIZE;
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header.timestamp = Utils.MilisUnixTimeStampUTC();
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//Get packet size
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header.packetSize += (ushort) data.Length;
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var packet = new BasePacket(header, data);
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return packet;
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}
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public static unsafe void EncryptPacket(Blowfish blowfish, BasePacket packet)
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{
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var data = packet.data;
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int size = packet.header.packetSize;
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var offset = 0;
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while (offset < data.Length)
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{
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if (data.Length < offset + SubPacket.SUBPACKET_SIZE)
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throw new OverflowException("Packet Error: Subpacket was too small");
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SubPacketHeader header;
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fixed (byte* pdata = &data[offset])
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{
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header = (SubPacketHeader) Marshal.PtrToStructure(new IntPtr(pdata), typeof(SubPacketHeader));
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}
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if (data.Length < offset + header.subpacketSize)
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throw new OverflowException("Packet Error: Subpacket size didn't equal subpacket data");
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blowfish.Encipher(data, offset + 0x10, header.subpacketSize - 0x10);
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offset += header.subpacketSize;
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}
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}
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public static unsafe void DecryptPacket(Blowfish blowfish, ref BasePacket packet)
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{
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var data = packet.data;
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int size = packet.header.packetSize;
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var offset = 0;
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while (offset < data.Length)
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{
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if (data.Length < offset + SubPacket.SUBPACKET_SIZE)
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throw new OverflowException("Packet Error: Subpacket was too small");
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SubPacketHeader header;
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fixed (byte* pdata = &data[offset])
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{
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header = (SubPacketHeader) Marshal.PtrToStructure(new IntPtr(pdata), typeof(SubPacketHeader));
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}
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if (data.Length < offset + header.subpacketSize)
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throw new OverflowException("Packet Error: Subpacket size didn't equal subpacket data");
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blowfish.Decipher(data, offset + 0x10, header.subpacketSize - 0x10);
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offset += header.subpacketSize;
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}
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}
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#endregion
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}
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public static class LoggerExtensions
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{
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public static void ColorDebug(this Logger logger, string message, ConsoleOutputColor color)
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{
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var logEvent = new LogEventInfo(LogLevel.Debug, logger.Name, message);
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logEvent.Properties["color"] = (int) color;
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logger.Log(logEvent);
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}
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}
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}
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@ -54,12 +54,14 @@
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<Reference Include="System.Xml" />
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</ItemGroup>
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<ItemGroup>
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<Compile Include="BasePacket.cs" />
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<Compile Include="Bitfield.cs" />
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<Compile Include="Blowfish.cs" />
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<Compile Include="EfficientHashTables.cs" />
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<Compile Include="Properties\AssemblyInfo.cs" />
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<Compile Include="Sql.cs" />
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<Compile Include="STA_INIFile.cs" />
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<Compile Include="SubPacket.cs" />
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<Compile Include="Utils.cs" />
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</ItemGroup>
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<ItemGroup>
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163
FFXIVClassic Common Class Lib/SubPacket.cs
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163
FFXIVClassic Common Class Lib/SubPacket.cs
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using System;
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using System.Runtime.InteropServices;
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using FFXIVClassic.Common;
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using NLog;
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using NLog.Targets;
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namespace FFXIVClassic.Common
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{
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[StructLayout(LayoutKind.Sequential)]
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public struct SubPacketHeader
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{
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public ushort subpacketSize;
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public ushort type;
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public uint sourceId;
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public uint targetId;
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public uint unknown1;
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}
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[StructLayout(LayoutKind.Sequential)]
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public struct GameMessageHeader
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{
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public ushort unknown4; //Always 0x14
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public ushort opcode;
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public uint unknown5;
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public uint timestamp;
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public uint unknown6;
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}
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public class SubPacket
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{
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public const int SUBPACKET_SIZE = 0x10;
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public const int GAMEMESSAGE_SIZE = 0x10;
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private static readonly Logger logger = LogManager.GetCurrentClassLogger();
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public byte[] data;
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public GameMessageHeader gameMessage;
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public SubPacketHeader header;
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public unsafe SubPacket(byte[] bytes, ref int offset)
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{
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if (bytes.Length < offset + SUBPACKET_SIZE)
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throw new OverflowException("Packet Error: Subpacket was too small");
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fixed (byte* pdata = &bytes[offset])
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{
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header = (SubPacketHeader) Marshal.PtrToStructure(new IntPtr(pdata), typeof(SubPacketHeader));
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}
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if (header.type == 0x3)
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{
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fixed (byte* pdata = &bytes[offset + SUBPACKET_SIZE])
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{
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gameMessage =
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(GameMessageHeader) Marshal.PtrToStructure(new IntPtr(pdata), typeof(GameMessageHeader));
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}
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}
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if (bytes.Length < offset + header.subpacketSize)
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throw new OverflowException("Packet Error: Subpacket size didn't equal subpacket data");
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if (header.type == 0x3)
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{
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data = new byte[header.subpacketSize - SUBPACKET_SIZE - GAMEMESSAGE_SIZE];
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Array.Copy(bytes, offset + SUBPACKET_SIZE + GAMEMESSAGE_SIZE, data, 0, data.Length);
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}
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else
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{
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data = new byte[header.subpacketSize - SUBPACKET_SIZE];
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Array.Copy(bytes, offset + SUBPACKET_SIZE, data, 0, data.Length);
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}
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offset += header.subpacketSize;
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}
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public SubPacket(ushort opcode, uint sourceId, uint targetId, byte[] data)
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{
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header = new SubPacketHeader();
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gameMessage = new GameMessageHeader();
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gameMessage.opcode = opcode;
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header.sourceId = sourceId;
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header.targetId = targetId;
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gameMessage.timestamp = Utils.UnixTimeStampUTC();
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header.type = 0x03;
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header.unknown1 = 0x00;
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gameMessage.unknown4 = 0x14;
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gameMessage.unknown5 = 0x00;
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gameMessage.unknown6 = 0x00;
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this.data = data;
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header.subpacketSize = (ushort) (SUBPACKET_SIZE + GAMEMESSAGE_SIZE + data.Length);
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}
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public SubPacket(SubPacket original, uint newTargetId)
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{
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header = new SubPacketHeader();
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gameMessage = original.gameMessage;
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header.subpacketSize = original.header.subpacketSize;
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header.type = original.header.type;
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header.sourceId = original.header.sourceId;
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header.targetId = newTargetId;
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data = original.data;
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}
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public byte[] GetHeaderBytes()
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{
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var size = Marshal.SizeOf(header);
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var arr = new byte[size];
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var ptr = Marshal.AllocHGlobal(size);
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Marshal.StructureToPtr(header, ptr, true);
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Marshal.Copy(ptr, arr, 0, size);
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Marshal.FreeHGlobal(ptr);
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return arr;
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}
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public byte[] GetGameMessageBytes()
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{
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var size = Marshal.SizeOf(gameMessage);
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var arr = new byte[size];
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|
||||
var ptr = Marshal.AllocHGlobal(size);
|
||||
Marshal.StructureToPtr(gameMessage, ptr, true);
|
||||
Marshal.Copy(ptr, arr, 0, size);
|
||||
Marshal.FreeHGlobal(ptr);
|
||||
return arr;
|
||||
}
|
||||
|
||||
public byte[] GetBytes()
|
||||
{
|
||||
var outBytes = new byte[header.subpacketSize];
|
||||
Array.Copy(GetHeaderBytes(), 0, outBytes, 0, SUBPACKET_SIZE);
|
||||
|
||||
if (header.type == 0x3)
|
||||
Array.Copy(GetGameMessageBytes(), 0, outBytes, SUBPACKET_SIZE, GAMEMESSAGE_SIZE);
|
||||
|
||||
Array.Copy(data, 0, outBytes, SUBPACKET_SIZE + (header.type == 0x3 ? GAMEMESSAGE_SIZE : 0), data.Length);
|
||||
return outBytes;
|
||||
}
|
||||
|
||||
public void DebugPrintSubPacket()
|
||||
{
|
||||
#if DEBUG
|
||||
logger.ColorDebug(
|
||||
string.Format("Size:0x{0:X} Opcode:0x{1:X}{2}{3}", header.subpacketSize, gameMessage.opcode,
|
||||
Environment.NewLine,
|
||||
Utils.ByteArrayToHex(GetHeaderBytes())), ConsoleOutputColor.DarkRed);
|
||||
|
||||
if (header.type == 0x03)
|
||||
{
|
||||
logger.ColorDebug(Utils.ByteArrayToHex(GetGameMessageBytes(), SUBPACKET_SIZE),
|
||||
ConsoleOutputColor.DarkRed);
|
||||
|
||||
logger.ColorDebug(Utils.ByteArrayToHex(data, SUBPACKET_SIZE + GAMEMESSAGE_SIZE),
|
||||
ConsoleOutputColor.DarkMagenta);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue