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Fixed bugs on how subpackets handled. Reorganized subpackets and split header with game header.

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This commit is contained in:
Filip Maj 2015-10-14 23:48:49 -04:00
parent 1d20f8b8b8
commit 235a5adae3
3 changed files with 286 additions and 233 deletions
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71
FFXIVClassic Map Server/packets/SubPacket.cs
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@ -13,10 +13,15 @@ namespace FFXIVClassic_Lobby_Server.packets
public struct SubPacketHeader
{
public ushort subpacketSize;
public ushort unknown0; //Always 0x03
public ushort type;
public uint sourceId;
public uint targetId;
public uint unknown1;
}
[StructLayout(LayoutKind.Sequential)]
public struct GameMessageHeader
{
public ushort unknown4; //Always 0x14
public ushort opcode;
public uint unknown5;
@ -26,9 +31,11 @@ namespace FFXIVClassic_Lobby_Server.packets
public class SubPacket
{
public const int SUBPACKET_SIZE = 0x20;
public const int SUBPACKET_SIZE = 0x10;
public const int GAMEMESSAGE_SIZE = 0x10;
public SubPacketHeader header;
public GameMessageHeader gameMessage;
public byte[] data;
public unsafe SubPacket(byte[] bytes, ref int offset)
@ -41,11 +48,27 @@ namespace FFXIVClassic_Lobby_Server.packets
header = (SubPacketHeader)Marshal.PtrToStructure(new IntPtr(pdata), typeof(SubPacketHeader));
}
if (header.type == 0x3)
{
fixed (byte* pdata = &bytes[offset + SUBPACKET_SIZE])
{
gameMessage = (GameMessageHeader)Marshal.PtrToStructure(new IntPtr(pdata), typeof(GameMessageHeader));
}
}
if (bytes.Length < offset + header.subpacketSize)
throw new OverflowException("Packet Error: Subpacket size didn't equal subpacket data");
data = new byte[header.subpacketSize - SUBPACKET_SIZE];
Array.Copy(bytes, offset + SUBPACKET_SIZE, data, 0, data.Length);
if (header.type == 0x3)
{
data = new byte[header.subpacketSize - SUBPACKET_SIZE - GAMEMESSAGE_SIZE];
Array.Copy(bytes, offset + SUBPACKET_SIZE + GAMEMESSAGE_SIZE, data, 0, data.Length);
}
else
{
data = new byte[header.subpacketSize - SUBPACKET_SIZE];
Array.Copy(bytes, offset + SUBPACKET_SIZE, data, 0, data.Length);
}
offset += header.subpacketSize;
}
@ -53,21 +76,23 @@ namespace FFXIVClassic_Lobby_Server.packets
public SubPacket(ushort opcode, uint sourceId, uint targetId, byte[] data)
{
this.header = new SubPacketHeader();
header.opcode = opcode;
this.gameMessage = new GameMessageHeader();
gameMessage.opcode = opcode;
header.sourceId = sourceId;
header.targetId = targetId;
header.timestamp = Utils.UnixTimeStampUTC();
gameMessage.timestamp = Utils.UnixTimeStampUTC();
header.unknown0 = 0x03;
header.type = 0x03;
header.unknown1 = 0x00;
header.unknown4 = 0x14;
header.unknown5 = 0x00;
header.unknown6 = 0x00;
gameMessage.unknown4 = 0x14;
gameMessage.unknown5 = 0x00;
gameMessage.unknown6 = 0x00;
this.data = data;
header.subpacketSize = (ushort)(0x20 + data.Length);
header.subpacketSize = (ushort)(SUBPACKET_SIZE + GAMEMESSAGE_SIZE + data.Length);
}
public byte[] getHeaderBytes()
@ -82,11 +107,27 @@ namespace FFXIVClassic_Lobby_Server.packets
return arr;
}
public byte[] getGameMessageBytes()
{
int size = Marshal.SizeOf(gameMessage);
byte[] arr = new byte[size];
IntPtr ptr = Marshal.AllocHGlobal(size);
Marshal.StructureToPtr(gameMessage, ptr, true);
Marshal.Copy(ptr, arr, 0, size);
Marshal.FreeHGlobal(ptr);
return arr;
}
public byte[] getBytes()
{
byte[] outBytes = new byte[header.subpacketSize];
Array.Copy(getHeaderBytes(), 0, outBytes, 0, SUBPACKET_SIZE);
Array.Copy(data, 0, outBytes, SUBPACKET_SIZE, data.Length);
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;
}
@ -94,8 +135,12 @@ namespace FFXIVClassic_Lobby_Server.packets
{
#if DEBUG
Console.BackgroundColor = ConsoleColor.DarkRed;
Console.WriteLine("Size: 0x{0:X}, Opcode: 0x{1:X}", header.subpacketSize, header.opcode);
Console.WriteLine("Size: 0x{0:X}", header.subpacketSize);
if (header.type == 0x03)
Console.WriteLine("Opcode: 0x{0:X}", gameMessage.opcode);
Console.WriteLine("{0}", Utils.ByteArrayToHex(getHeaderBytes()));
if (header.type == 0x03)
Console.WriteLine("{0}", Utils.ByteArrayToHex(getGameMessageBytes()));
Console.BackgroundColor = ConsoleColor.DarkMagenta;
Console.WriteLine("{0}", Utils.ByteArrayToHex(data));
Console.BackgroundColor = ConsoleColor.Black;