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Blowfish key is now generate from client's handshake packet.

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This commit is contained in:
Filip Maj 2016-03-05 18:02:37 -05:00
parent 5acc769505
commit 88cb73bc09
5 changed files with 76 additions and 10 deletions
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5
FFXIVClassic_Lobby_Server/Database.cs
View file

@ -128,9 +128,9 @@ namespace FFXIVClassic_Lobby_Server
WHERE userId=@userId AND id=@cid;
INSERT INTO characters_appearance
(characterId, baseId, size, voice, skinColor, hairStyle, hairColor, hairHighlightColor, eyeColor, faceType, faceEyebrows, faceEyeShape, faceIrisSize, faceNose, faceMouth, faceFeatures, ears, characteristics, characteristicsColor, mainhand, head, body, hands, legs, feet)
(characterId, baseId, size, voice, skinColor, hairStyle, hairColor, hairHighlightColor, eyeColor, faceType, faceEyebrows, faceEyeShape, faceIrisSize, faceNose, faceMouth, faceFeatures, ears, characteristics, characteristicsColor, mainhand, head, body, hands, legs, feet, waist)
VALUES
(@cid, 4294967295, @size, @voice, @skinColor, @hairStyle, @hairColor, @hairHighlightColor, @eyeColor, @faceType, @faceEyebrows, @faceEyeShape, @faceIrisSize, @faceNose, @faceMouth, @faceFeatures, @ears, @characteristics, @characteristicsColor, @mainhand, @head, @body, @hands, @legs, @feet)
(@cid, 4294967295, @size, @voice, @skinColor, @hairStyle, @hairColor, @hairHighlightColor, @eyeColor, @faceType, @faceEyebrows, @faceEyeShape, @faceIrisSize, @faceNose, @faceMouth, @faceFeatures, @ears, @characteristics, @characteristicsColor, @mainhand, @head, @body, @hands, @legs, @feet, @waist)
";
cmd.Parameters.AddWithValue("@userId", accountId);
cmd.Parameters.AddWithValue("@cid", cid);
@ -172,6 +172,7 @@ namespace FFXIVClassic_Lobby_Server
cmd.Parameters.AddWithValue("@legs", charaInfo.legs);
cmd.Parameters.AddWithValue("@hands", charaInfo.hands);
cmd.Parameters.AddWithValue("@feet", charaInfo.feet);
cmd.Parameters.AddWithValue("@waist", charaInfo.belt);
cmd.ExecuteNonQuery();

1
FFXIVClassic_Lobby_Server/FFXIVClassic_Lobby_Server.csproj
View file

@ -72,6 +72,7 @@
<Compile Include="PacketProcessor.cs" />
<Compile Include="packets\BasePacket.cs" />
<Compile Include="packets\receive\CharacterModifyPacket.cs" />
<Compile Include="packets\receive\SecurityHandshakePacket.cs" />
<Compile Include="packets\receive\SelectCharacterPacket.cs" />
<Compile Include="packets\receive\SessionPacket.cs" />
<Compile Include="packets\send\CharaCreatorPacket.cs" />

42
FFXIVClassic_Lobby_Server/PacketProcessor.cs
View file

@ -9,6 +9,7 @@ using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
@ -23,6 +24,7 @@ namespace FFXIVClassic_Lobby_Server
if ((packet.header.packetSize == 0x288) && (packet.data[0x34] == 'T')) //Test Ticket Data
{
packet.debugPrintPacket();
//Crypto handshake
ProcessStartSession(client, packet);
return;
@ -65,13 +67,12 @@ namespace FFXIVClassic_Lobby_Server
private void ProcessStartSession(ClientConnection client, BasePacket packet)
{
UInt32 clientTime = BitConverter.ToUInt32(packet.data, 0x74);
SecurityHandshakePacket securityHandshake = new SecurityHandshakePacket(packet.data);
//We assume clientTime is 0x50E0E812, but we need to generate a proper key later
byte[] blowfishKey = { 0xB4, 0xEE, 0x3F, 0x6C, 0x01, 0x6F, 0x5B, 0xD9, 0x71, 0x50, 0x0D, 0xB1, 0x85, 0xA2, 0xAB, 0x43};
byte[] blowfishKey = GenerateKey(securityHandshake.ticketPhrase, securityHandshake.clientNumber);
client.blowfish = new Blowfish(blowfishKey);
Log.info(String.Format("Received encryption key: 0x{0:X}", clientTime));
Log.info(String.Format("SecCNum: 0x{0:X}", securityHandshake.clientNumber));
//Respond with acknowledgment
BasePacket outgoingPacket = new BasePacket(HardCoded_Packets.g_secureConnectionAcknowledgment);
@ -242,21 +243,21 @@ namespace FFXIVClassic_Lobby_Server
//Set Initial Position
switch (info.initialTown)
{
case 1:
case 1: //ocn0Battle02 (Limsa)
info.zoneId = 193;
info.x = 0.016f;
info.y = 10.35f;
info.z = -36.91f;
info.rot = 0.025f;
break;
case 2:
case 2: //fst0Battle03 (Gridania)
info.zoneId = 166;
info.x = 356.09f;
info.y = 3.74f;
info.z = -701.62f;
info.rot = -1.4f;
break;
case 3:
case 3: //wil0Battle01 (Ul'dah)
info.zoneId = 184;
info.x = 12.63f;
info.y = 196.05f;
@ -357,5 +358,32 @@ namespace FFXIVClassic_Lobby_Server
client.queuePacket(basePacket);
}
private byte[] GenerateKey(string ticketPhrase, uint clientNumber)
{
byte[] key;
using (MemoryStream memStream = new MemoryStream(0x2C))
{
using (BinaryWriter binWriter = new BinaryWriter(memStream))
{
binWriter.Write((Byte)0x78);
binWriter.Write((Byte)0x56);
binWriter.Write((Byte)0x34);
binWriter.Write((Byte)0x12);
binWriter.Write((UInt32)clientNumber);
binWriter.Write((Byte)0xE8);
binWriter.Write((Byte)0x03);
binWriter.Write((Byte)0x00);
binWriter.Write((Byte)0x00);
binWriter.Write(Encoding.ASCII.GetBytes(ticketPhrase), 0, Encoding.ASCII.GetByteCount(ticketPhrase) >= 0x20 ? 0x20 : Encoding.ASCII.GetByteCount(ticketPhrase));
}
byte[] nonMD5edKey = memStream.GetBuffer();
using (MD5 md5Hash = MD5.Create())
{
key = md5Hash.ComputeHash(nonMD5edKey);
}
}
return key;
}
}
}

36
FFXIVClassic_Lobby_Server/packets/receive/SecurityHandshakePacket.cs Normal file
View file

@ -0,0 +1,36 @@
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace FFXIVClassic_Lobby_Server.packets.receive
{
class SecurityHandshakePacket
{
public string ticketPhrase;
public uint clientNumber;
public bool invalidPacket = false;
public SecurityHandshakePacket(byte[] data)
{
using (MemoryStream mem = new MemoryStream(data))
{
using (BinaryReader binReader = new BinaryReader(mem))
{
try
{
binReader.BaseStream.Seek(0x34, SeekOrigin.Begin);
ticketPhrase = Encoding.ASCII.GetString(binReader.ReadBytes(0x40)).Trim(new[] { '\0' });
clientNumber = binReader.ReadUInt32();
}
catch (Exception){
invalidPacket = true;
}
}
}
}
}
}

2
FFXIVClassic_Lobby_Server/utils/CharacterCreatorUtils.cs
View file

@ -14,7 +14,7 @@ namespace FFXIVClassic_Lobby_Server.utils
{ 3, new uint[]{79692890,0,0,0,0,0,0,0,31776,4448,1024,25824,6144,0,0,0,0,0,0,0,0,0} }, //GLA
{ 4, new uint[]{147850310,0,0,0,0,0,0,23713,1184,10016,5472,1152,6144,0,0,0,0,0,0,0,0,0} }, //MRD
{ 7, new uint[]{210764860,236979210,0,0,0,231736320,0,0,9888,9984,1024,25824,6144,0,0,0,0,0,0,0,0,0} }, //ARC
{ 8, new uint[]{210764860,0,0,0,0,0,0,0,13920,7200,1024,10656,6144,0,0,0,0,0,0,0,0,0} }, //LNC
{ 8, new uint[]{168823858,0,0,0,0,0,0,0,13920,7200,1024,10656,6144,0,0,0,0,0,0,0,0,0} }, //LNC
{ 22, new uint[]{294650980,0,0,0,0,0,0,0,7744,5472,1024,5504,4096,0,0,0,0,0,0,0,0,0} }, //THM
{ 23, new uint[]{347079700,0,0,0,0,0,0,0,4448,2240,1024,4416,4096,0,0,0,0,0,0,0,0,0} }, //CNJ