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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
View File

@@ -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
}
}
}

3
FFXIVClassic_Lobby_Server/packets/CharacterListPacket.cs
View File

@@ -77,8 +77,7 @@ namespace FFXIVClassic_Lobby_Server.packets
binWriter.Write(Encoding.ASCII.GetBytes(chara.name.PadRight(0x20, '\0'))); //Name
binWriter.Write(Encoding.ASCII.GetBytes(worldname.PadRight(0xE, '\0'))); //World Name
CharaInfo info = JsonConvert.DeserializeObject<CharaInfo>(chara.charaInfo);
binWriter.Write(info.buildForCharaList(chara, appearance)); //Appearance Data
binWriter.Write(CharaInfo.buildForCharaList(chara, appearance)); //Appearance Data
//binWriter.Write(CharaInfo.debug()); //Appearance Data
characterCount++;

105
FFXIVClassic_Lobby_Server/packets/SubPacket.cs
View File

@@ -12,24 +12,31 @@ namespace FFXIVClassic_Lobby_Server.packets
[StructLayout(LayoutKind.Sequential)]
public struct SubPacketHeader
{
public ushort subpacketSize;
public ushort unknown0; //Always 0x03
public uint sourceId;
public uint targetId;
public uint unknown1;
public ushort unknown4; //Always 0x14
public ushort opcode;
public uint unknown5;
public uint timestamp;
public uint unknown6;
public ushort subpacketSize;
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;
public uint timestamp;
public uint unknown6;
}
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 byte[] data;
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;
}
@@ -53,22 +76,34 @@ 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;
UInt32 unixTimestamp = (UInt32)(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds;
header.timestamp = unixTimestamp;
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 SubPacket(SubPacket original, uint newTargetId)
{
this.header = new SubPacketHeader();
this.gameMessage = original.gameMessage;
header.subpacketSize = original.header.subpacketSize;
header.type = original.header.type;
header.sourceId = original.header.sourceId;
header.targetId = newTargetId;
data = original.data;
}
public byte[] getHeaderBytes()
@@ -83,11 +118,27 @@ 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;
}
@@ -95,8 +146,12 @@ 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;