public override byte[] OnRecv(byte[] section, int length)
{
int t;
byte[] data;
for (int i = 0; i < length; i++)
{
input.Add(section[i]);
}
RealmType code = (RealmType)input[0];
switch (code)
{
case RealmType.LOGON_CHALLENGE: // Logon challenge
case RealmType.RECONNECT_CHALLENGE:
{
if (input.Length < 34 || input.Length < 34 + input[33])
{
return(null);
}
int clientVersion = input.Seek(11).GetWord();
//byte[] blu = input.GetArray(5, input[33]);
//Console.WriteLine("DEBUG:" + clientVersion);
userName = input.GetArray(34, input[33]);
data = input; input.Length = 0;
sUserName = System.Text.Encoding.ASCII.GetString(userName);
//string ble = System.Text.Encoding.ASCII.GetString(blu);
byte [] hash = rl.GetUserPasswordHash(sUserName);
//Console.WriteLine("DEBUG - ble:" + ble + "user: "******" code: " + code);
}
ByteArrayBuilder p = new ByteArrayBuilder();
p.Add((byte)1, 3);
p.Add(new byte[116]);
return(p);
}
if (LogMessageEvent != null)
{
LogMessageEvent(sUserName + " code: " + code);
}
byte [] res = new Byte[hash.Length + salt.Length];
Const.rand.NextBytes(salt);
#if CHECK
salt = new byte[] { 0x33, 0xf1, 0x40, 0xd4, 0x6c, 0xb6, 0x6e, 0x63, 0x1f, 0xdb, 0xbb, 0xc9, 0xf0, 0x29, 0xad, 0x88, 0x98, 0xe0, 0x5e, 0xe5, 0x33, 0x87, 0x61, 0x18, 0x18, 0x5e, 0x56, 0xdd, 0xe8, 0x43, 0x67, 0x4f };
#endif
t = 0;
foreach (byte s in salt)
{
res[t++] = s;
}
foreach (byte s in hash)
{
res[t++] = s;
}
SHA1 sha = new SHA1CryptoServiceProvider();
byte [] hash2 = sha.ComputeHash(res, 0, res.Length);
byte [] x = Reverse(hash2);
rN = Reverse(N);
Const.rand.NextBytes(b);
#if CHECK
b = new byte[] { 0x86, 0x92, 0xE3, 0xA6, 0xBA, 0x48, 0xB5, 0xB1, 0x00, 0x4C, 0xEF, 0x76, 0x82, 0x51, 0x27, 0xB7, 0xEB, 0x7D, 0x1A, 0xEF };
#endif
rb = Reverse(b);
BigInteger bi = new BigInteger(x);
BigInteger bi2 = new BigInteger(rN);
G = new BigInteger(new byte[] { 7 });
v = G.modPow(bi, bi2);
K = new BigInteger(new Byte[] { 3 });
BigInteger temp1 = K * v;
BigInteger temp2 = G.modPow(new BigInteger(rb), new BigInteger(rN));
BigInteger temp3 = temp1 + temp2;
B = temp3 % new BigInteger(rN);
ByteArrayBuilder pack = new ByteArrayBuilder();
pack.Add((byte)0, 0, 0);
pack.Add(Reverse(B.getBytes(32)));
pack.Add((byte)1, 7, 32);
pack.Add(N);
pack.Add(salt);
pack.Add(new byte[16]);
return(pack);
}
case RealmType.LOGON_PROOF: // Logon proof
case RealmType.RECONNECT_PROOF:
{
if (input.Length < 53)
{
return(null);
}
byte[] A = input.GetArray(1, 32);
byte[] kM1 = input.GetArray(33, 20);
data = input;
input.Length = 0;
#if CHECK
A = new byte[] { 0x23, 0x2f, 0xb1, 0xb8, 0x85, 0x29, 0x64, 0x3d, 0x95, 0xb8, 0xdc, 0xe7, 0x8f, 0x27, 0x50, 0xc7, 0x5b, 0x2d, 0xf3, 0x7a, 0xcb, 0xa8, 0x73, 0xeb, 0x31, 0x07, 0x38, 0x39, 0xed, 0xa0, 0x73, 0x8d };
#endif
byte [] rA = Reverse(A);
byte [] AB = Concat(A, Reverse(B.getBytes(32)));
SHA1 shaM1 = new SHA1CryptoServiceProvider();
byte [] U = shaM1.ComputeHash(AB);
byte [] rU = Reverse(U);
// SS_Hash
BigInteger temp1 = v.modPow(new BigInteger(rU), new BigInteger(rN));
BigInteger temp2 = temp1 * new BigInteger(rA);
BigInteger temp3 = temp2.modPow(new BigInteger(rb), new BigInteger(rN));
byte [] S1 = new byte[16];
byte [] S2 = new byte[16];
byte [] S = temp3.getBytes(32);
byte [] rS = Reverse(S);
for (t = 0; t < 16; t++)
{
S1[t] = rS[t * 2];
S2[t] = rS[(t * 2) + 1];
}
byte [] hashS1 = shaM1.ComputeHash(S1);
byte [] hashS2 = shaM1.ComputeHash(S2);
byte [] SS_Hash = new byte[hashS1.Length + hashS2.Length];
for (t = 0; t < hashS1.Length; t++)
{
SS_Hash[t * 2] = hashS1[t];
SS_Hash[(t * 2) + 1] = hashS2[t];
}
// cal M1
byte [] NHash = shaM1.ComputeHash(N);
byte [] GHash = shaM1.ComputeHash(G.getBytes());
byte [] userHash = shaM1.ComputeHash(userName);
byte [] NG_Hash = new byte[20];
for (t = 0; t < 20; t++)
{
NG_Hash[t] = (byte)(NHash[t] ^ GHash[t]);
}
byte [] Temp = Concat(NG_Hash, userHash);
Temp = Concat(Temp, salt);
Temp = Concat(Temp, A);
Temp = Concat(Temp, Reverse(B.getBytes(32)));
Temp = Concat(Temp, SS_Hash);
byte [] M1 = shaM1.ComputeHash(Temp);
ByteArrayBuilder pack;
if (!ByteArray.Same(M1, kM1))
{
if (LogMessageEvent != null)
{
LogMessageEvent(sUserName + " code: " + code);
}
pack = new ByteArrayBuilder();
pack.Add((byte)1, 3);
pack.Add(new byte[24]);
return(pack);
}
if (LogMessageEvent != null)
{
LogMessageEvent(sUserName + " code: " + code);
}
rl.SetUserSessionKey(sUserName, SS_Hash);
// cal M2
Temp = Concat(A, M1);
Temp = Concat(Temp, SS_Hash);
byte [] M2 = shaM1.ComputeHash(Temp);
pack = new ByteArrayBuilder();
pack.Add((byte)1, 0);
pack.Add(M2);
pack.Add(new byte[4]);
return(pack);
}
case RealmType.UPDATESRV: // Update server
if (input.Length < 1)
{
return(null);
}
data = input; input.Length = 0;
if (LogMessageEvent != null)
{
LogMessageEvent("UPDATESRV");
}
break;
case RealmType.REALMLIST: // Realm List
{
if (input.Length < 1)
{
return(null);
}
byte[] request = input.GetArray(1, 4);
input.Length = 0;
if (LogMessageEvent != null)
{
LogMessageEvent("REALMLIST");
}
ByteArrayBuilder pack = new ByteArrayBuilder(false);
pack.Add((byte)RealmType.REALMLIST, 0, 0);
pack.Add(request);
rl.GetRealmList(sUserName, pack);
pack.Add((byte)0, (byte)0);
pack.Set(1, (ushort)(pack.Length - 3));
return(pack);
}
default:
data = input; input.Length = 0;
if (LogMessageEvent != null)
{
LogMessageEvent("Receive unknown command {0}" + data[0]);
}
break;
}
byte [] ret = { 0, 0 };
return(ret);
}