public void PackAuthData(byte[] outdata)
{
int outlength = 32;
{
byte[] randomdata = new byte[18];
g_random.GetBytes(randomdata);
randomdata.CopyTo(outdata, 4);
}
TlsAuthData authData = (TlsAuthData)this.Server.data;
lock (authData)
{
if (authData.clientID == null)
{
authData.clientID = new byte[32];
g_random.GetBytes(authData.clientID);
}
}
UInt64 utc_time_second = (UInt64)Math.Floor(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1, 0, 0, 0)).TotalSeconds);
UInt32 utc_time = (UInt32)(utc_time_second);
byte[] time_bytes = BitConverter.GetBytes(utc_time);
Array.Reverse(time_bytes);
Array.Copy(time_bytes, 0, outdata, 0, 4);
hmac_sha1(outdata, outlength);
}
public override byte[] ClientEncode(byte[] encryptdata, int datalength, out int outlength)
{
if (handshake_status == -1)
{
SentLength += datalength;
outlength = datalength;
return(encryptdata);
}
byte[] outdata = new byte[datalength + 4096];
if ((handshake_status & 4) == 4)
{
int start = 0;
outlength = 0;
while (send_id <= 4 && datalength - start > 256)
{
int len = random.Next(512) + 64;
if (len > datalength - start)
{
len = datalength - start;
}
PackData(encryptdata, ref start, len, outdata, ref outlength);
}
while (datalength - start > 2048)
{
int len = random.Next(4096) + 100;
if (len > datalength - start)
{
len = datalength - start;
}
PackData(encryptdata, ref start, len, outdata, ref outlength);
}
if (datalength - start > 0)
{
PackData(encryptdata, ref start, datalength - start, outdata, ref outlength);
}
return(outdata);
}
if (datalength > 0)
{
byte[] data = new byte[datalength + 5];
data[0] = 0x17;
data[1] = 0x3;
data[2] = 0x3;
data[3] = (byte)(datalength >> 8);
data[4] = (byte)(datalength);
Array.Copy(encryptdata, 0, data, 5, datalength);
data_sent_buffer.Add(data);
}
if ((handshake_status & 3) != 0)
{
outlength = 0;
if ((handshake_status & 2) == 0)
{
int[] finish_len_set = new int[] { 32 }; //, 40, 64
int finish_len = finish_len_set[random.Next(finish_len_set.Length)];
byte[] hmac_data = new byte[11 + finish_len];
byte[] rnd = new byte[finish_len - 10];
random.NextBytes(rnd);
byte[] handshake_finish = System.Text.Encoding.ASCII.GetBytes("\x14\x03\x03\x00\x01\x01" + "\x16\x03\x03\x00\x20");
handshake_finish[handshake_finish.Length - 1] = (byte)finish_len;
handshake_finish.CopyTo(hmac_data, 0);
rnd.CopyTo(hmac_data, handshake_finish.Length);
hmac_sha1(hmac_data, hmac_data.Length);
data_sent_buffer.Insert(0, hmac_data);
SentLength -= hmac_data.Length;
handshake_status |= 2;
}
if (datalength == 0 || fastauth)
{
foreach (byte[] data in data_sent_buffer)
{
Util.Utils.SetArrayMinSize2(ref outdata, outlength + data.Length);
Array.Copy(data, 0, outdata, outlength, data.Length);
SentLength += data.Length;
outlength += data.Length;
}
data_sent_buffer.Clear();
}
if (datalength == 0)
{
handshake_status |= 4;
}
}
else
{
byte[] rnd = new byte[32];
PackAuthData(rnd);
List <byte> ssl_buf = new List <byte>();
List <byte> ext_buf = new List <byte>();
string str_buf = "001cc02bc02fcca9cca8cc14cc13c00ac014c009c013009c0035002f000a0100";
ssl_buf.AddRange(rnd);
ssl_buf.Add(32);
ssl_buf.AddRange(((TlsAuthData)this.Server.data).clientID);
ssl_buf.AddRange(to_bin(str_buf));
str_buf = "ff01000100";
ext_buf.AddRange(to_bin(str_buf));
string host = Server.host;
if (Server.param.Length > 0)
{
string[] hosts = Server.param.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
if (hosts != null && hosts.Length > 0)
{
host = hosts[random.Next(hosts.Length)];
host = host.Trim(' ');
}
}
if (!string.IsNullOrEmpty(host) && host[host.Length - 1] >= '0' && host[host.Length - 1] <= '9' && Server.param.Length == 0)
{
host = "";
}
ext_buf.AddRange(sni(host));
string str_buf2 = "001700000023";
ext_buf.AddRange(to_bin(str_buf2));
{
TlsAuthData authData = (TlsAuthData)this.Server.data;
byte[] ticket = null;
lock (authData)
{
if (authData.ticket_buf == null)
{
authData.ticket_buf = new Dictionary <string, byte[]>();
}
if (!authData.ticket_buf.ContainsKey(host) || random.Next(16) == 0)
{
int ticket_size = random.Next(32, 196) * 2;
ticket = new byte[ticket_size];
g_random.GetBytes(ticket);
authData.ticket_buf[host] = ticket;
}
else
{
ticket = authData.ticket_buf[host];
}
}
ext_buf.Add((byte)(ticket.Length >> 8));
ext_buf.Add((byte)(ticket.Length & 0xff));
ext_buf.AddRange(ticket);
}
string str_buf3 = "000d0016001406010603050105030401040303010303020102030005000501000000000012000075500000000b00020100000a0006000400170018";
str_buf3 += "00150066000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000";
ext_buf.AddRange(to_bin(str_buf3));
ext_buf.Insert(0, (byte)(ext_buf.Count % 256));
ext_buf.Insert(0, (byte)((ext_buf.Count - 1) / 256));
ssl_buf.AddRange(ext_buf);
// client version
ssl_buf.Insert(0, (byte)3); // version
ssl_buf.Insert(0, (byte)3);
// length
ssl_buf.Insert(0, (byte)(ssl_buf.Count % 256));
ssl_buf.Insert(0, (byte)((ssl_buf.Count - 1) / 256));
ssl_buf.Insert(0, (byte)0);
ssl_buf.Insert(0, (byte)1); // client hello
// length
ssl_buf.Insert(0, (byte)(ssl_buf.Count % 256));
ssl_buf.Insert(0, (byte)((ssl_buf.Count - 1) / 256));
//
ssl_buf.Insert(0, (byte)0x1); // version
ssl_buf.Insert(0, (byte)0x3);
ssl_buf.Insert(0, (byte)0x16);
for (int i = 0; i < ssl_buf.Count; ++i)
{
outdata[i] = (byte)ssl_buf[i];
}
outlength = ssl_buf.Count;
handshake_status = 1;
}
return(outdata);
}