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Ported over the network code from the map server. A lot of backedlogged changes are here as well.

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This commit is contained in:
Filip Maj 2016-02-16 23:35:21 -05:00
parent af4a0d5546
commit 8c73f6e926
12 changed files with 443 additions and 184 deletions
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131
FFXIVClassic_Lobby_Server/packets/BasePacket.cs
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@ -9,25 +9,30 @@ using FFXIVClassic_Lobby_Server.common;
using System.IO;
namespace FFXIVClassic_Lobby_Server.packets
{
{
[StructLayout(LayoutKind.Sequential)]
public struct BasePacketHeader
{
public byte isAuthenticated;
public byte isEncrypted;
public ushort reserved;
public ushort packetSize;
public ushort numSubpackets;
public uint unknown1; //Id?
public uint unknown2; //Usually 0x13B
public byte isAuthenticated;
public byte isEncrypted;
public ushort connectionType;
public ushort packetSize;
public ushort numSubpackets;
public ulong timestamp; //Miliseconds
}
public class BasePacket{
public class BasePacket
{
public const int TYPE_ZONE = 1;
public const int TYPE_CHAT = 2;
public const int BASEPACKET_SIZE = 0x10;
public BasePacketHeader header;
public byte[] data;
public byte[] data;
//Loads a sniffed packet from a file
public unsafe BasePacket(String path)
{
byte[] bytes = File.ReadAllBytes(path);
@ -45,10 +50,16 @@ namespace FFXIVClassic_Lobby_Server.packets
int packetSize = header.packetSize;
data = new byte[packetSize - BASEPACKET_SIZE];
Array.Copy(bytes, BASEPACKET_SIZE, data, 0, packetSize - BASEPACKET_SIZE);
if (packetSize - BASEPACKET_SIZE != 0)
{
data = new byte[packetSize - BASEPACKET_SIZE];
Array.Copy(bytes, BASEPACKET_SIZE, data, 0, packetSize - BASEPACKET_SIZE);
}
else
data = new byte[0];
}
//Loads a sniffed packet from a byte array
public unsafe BasePacket(byte[] bytes)
{
if (bytes.Length < BASEPACKET_SIZE)
@ -65,7 +76,7 @@ namespace FFXIVClassic_Lobby_Server.packets
int packetSize = header.packetSize;
data = new byte[packetSize - BASEPACKET_SIZE];
Array.Copy(bytes, BASEPACKET_SIZE, data, 0, packetSize - BASEPACKET_SIZE);
Array.Copy(bytes, BASEPACKET_SIZE, data, 0, packetSize - BASEPACKET_SIZE);
}
public unsafe BasePacket(byte[] bytes, ref int offset)
@ -81,7 +92,7 @@ namespace FFXIVClassic_Lobby_Server.packets
int packetSize = header.packetSize;
if (bytes.Length < offset + header.packetSize)
throw new OverflowException("Packet Error: Packet size didn't equal given size");
throw new OverflowException("Packet Error: Packet size didn't equal given size");
data = new byte[packetSize - BASEPACKET_SIZE];
Array.Copy(bytes, offset + BASEPACKET_SIZE, data, 0, packetSize - BASEPACKET_SIZE);
@ -90,7 +101,7 @@ namespace FFXIVClassic_Lobby_Server.packets
}
public BasePacket(BasePacketHeader header, byte[] data)
{
{
this.header = header;
this.data = data;
}
@ -102,7 +113,7 @@ namespace FFXIVClassic_Lobby_Server.packets
int offset = 0;
while (offset < data.Length)
subpackets.Add(new SubPacket(data, ref offset));
subpackets.Add(new SubPacket(data, ref offset));
return subpackets;
}
@ -141,6 +152,52 @@ namespace FFXIVClassic_Lobby_Server.packets
return outBytes;
}
//Replaces all instances of the sniffed actorID with the given one
public void replaceActorID(uint actorID)
{
using (MemoryStream mem = new MemoryStream(data))
{
using (BinaryWriter binWriter = new BinaryWriter(mem))
{
using (BinaryReader binreader = new BinaryReader(mem))
{
while (binreader.BaseStream.Position + 4 < data.Length)
{
uint read = binreader.ReadUInt32();
if (read == 0x029B2941 || read == 0x02977DC7 || read == 0x0297D2C8 || read == 0x0230d573 || read == 0x23317df || read == 0x23344a3 || read == 0x1730bdb) //Original ID
{
binWriter.BaseStream.Seek(binreader.BaseStream.Position - 0x4, SeekOrigin.Begin);
binWriter.Write(actorID);
}
}
}
}
}
}
//Replaces all instances of the sniffed actorID with the given one
public void replaceActorID(uint fromActorID, uint actorID)
{
using (MemoryStream mem = new MemoryStream(data))
{
using (BinaryWriter binWriter = new BinaryWriter(mem))
{
using (BinaryReader binreader = new BinaryReader(mem))
{
while (binreader.BaseStream.Position + 4 < data.Length)
{
uint read = binreader.ReadUInt32();
if (read == fromActorID) //Original ID
{
binWriter.BaseStream.Seek(binreader.BaseStream.Position - 0x4, SeekOrigin.Begin);
binWriter.Write(actorID);
}
}
}
}
}
}
#region Utility Functions
public static BasePacket createPacket(List<SubPacket> subpackets, bool isAuthed, bool isEncrypted)
{
@ -148,16 +205,17 @@ namespace FFXIVClassic_Lobby_Server.packets
BasePacketHeader header = new BasePacketHeader();
byte[] data = null;
header.isAuthenticated = isAuthed?(byte)1:(byte)0;
header.isEncrypted = isEncrypted?(byte)1:(byte)0;
header.isAuthenticated = isAuthed ? (byte)1 : (byte)0;
header.isEncrypted = isEncrypted ? (byte)1 : (byte)0;
header.numSubpackets = (ushort)subpackets.Count;
header.packetSize = BASEPACKET_SIZE;
header.timestamp = Utils.MilisUnixTimeStampUTC();
//Get packet size
foreach (SubPacket subpacket in subpackets)
header.packetSize += subpacket.header.subpacketSize;
data = new byte[header.packetSize-0x10];
data = new byte[header.packetSize - 0x10];
//Add Subpackets
int offset = 0;
@ -184,6 +242,7 @@ namespace FFXIVClassic_Lobby_Server.packets
header.isEncrypted = isEncrypted ? (byte)1 : (byte)0;
header.numSubpackets = (ushort)1;
header.packetSize = BASEPACKET_SIZE;
header.timestamp = Utils.MilisUnixTimeStampUTC();
//Get packet size
header.packetSize += subpacket.header.subpacketSize;
@ -192,7 +251,7 @@ namespace FFXIVClassic_Lobby_Server.packets
//Add Subpackets
byte[] subpacketData = subpacket.getBytes();
Array.Copy(subpacketData, 0, data, 0, subpacketData.Length);
Array.Copy(subpacketData, 0, data, 0, subpacketData.Length);
Debug.Assert(data != null);
@ -200,13 +259,35 @@ namespace FFXIVClassic_Lobby_Server.packets
return packet;
}
public static BasePacket createPacket(byte[] data, bool isAuthed, bool isEncrypted)
{
Debug.Assert(data != null);
//Create Header
BasePacketHeader header = new BasePacketHeader();
header.isAuthenticated = isAuthed ? (byte)1 : (byte)0;
header.isEncrypted = isEncrypted ? (byte)1 : (byte)0;
header.numSubpackets = (ushort)1;
header.packetSize = BASEPACKET_SIZE;
header.timestamp = Utils.MilisUnixTimeStampUTC();
//Get packet size
header.packetSize += (ushort)data.Length;
BasePacket packet = new BasePacket(header, data);
return packet;
}
public static unsafe void encryptPacket(Blowfish blowfish, BasePacket packet)
{
byte[] data = packet.data;
int size = packet.header.packetSize;
int offset = 0;
while (offset < data.Length) {
while (offset < data.Length)
{
if (data.Length < offset + SubPacket.SUBPACKET_SIZE)
throw new OverflowException("Packet Error: Subpacket was too small");
@ -219,7 +300,7 @@ namespace FFXIVClassic_Lobby_Server.packets
if (data.Length < offset + header.subpacketSize)
throw new OverflowException("Packet Error: Subpacket size didn't equal subpacket data");
blowfish.Encipher(data, offset + 0x10, header.subpacketSize-0x10);
blowfish.Encipher(data, offset + 0x10, header.subpacketSize - 0x10);
offset += header.subpacketSize;
}
@ -246,7 +327,7 @@ namespace FFXIVClassic_Lobby_Server.packets
if (data.Length < offset + header.subpacketSize)
throw new OverflowException("Packet Error: Subpacket size didn't equal subpacket data");
blowfish.Decipher(data, offset + 0x10, header.subpacketSize-0x10);
blowfish.Decipher(data, offset + 0x10, header.subpacketSize - 0x10);
offset += header.subpacketSize;
}
@ -257,13 +338,13 @@ namespace FFXIVClassic_Lobby_Server.packets
{
#if DEBUG
Console.BackgroundColor = ConsoleColor.DarkYellow;
Console.WriteLine("IsAuthed: {0}, IsEncrypted: {1}, Size: 0x{2:X}, Num Subpackets: {3}", header.isAuthenticated, header.isEncrypted, header.packetSize, header.numSubpackets);
Console.WriteLine("IsAuthed: {0}, IsEncrypted: {1}, Size: 0x{2:X}, Num Subpackets: {3}", header.isAuthenticated, header.isEncrypted, header.packetSize, header.numSubpackets);
Console.WriteLine("{0}", Utils.ByteArrayToHex(getHeaderBytes()));
foreach (SubPacket sub in getSubpackets())
sub.debugPrintSubPacket();
Console.BackgroundColor = ConsoleColor.Black;
#endif
}
}
}