public static string BuildARCPacket(string command, string accept, string Sadress, string timeout, byte[] data)
{
try
{
if (command.Length == 8 && accept.Length == 6 && Sadress.Length == 14 && timeout.Length == 4 && data.Length < 512000)
{
// base arcp header
string packetheader = Sadress + accept + command + timeout;
// Encrypt data with SEA
string dataSEAb64 = SEA.EncryptToBase64(data);
// compute CRC32
string checksum = ComputeCRC32(data);
// append checksum to packet header
packetheader += checksum;
return(Security.ConvertToHex(packetheader + dataSEAb64));
}
else
{
return(null);
}
}
catch
{
return(null);
}
}
public static byte[] BuildPacket(string source, string command, string accept, string timeout, byte[] data, byte state)
{
try
{
if (command.Length == 8 && accept.Length == 6 && source.Length == 14 && timeout.Length == 4 && data.Length < 512000)
{
// compute CRC32
string checksum = ComputeCRC32(data);
byte[] packetheader = Append(Encoding.UTF8.GetBytes(source + accept + command + timeout + checksum), new byte[1] {
state
});
return(Append(packetheader, SEA.Encrypt(data)));
}
else
{
return(null);
}
}
catch
{
return(null);
}
}
public static void Init()
{
try
{
SEA.InitializeKey(2048, SettingsManager.SEAKey, 32);
}
catch (Exception ex)
{
AntiCrash.LogException(ex);
}
finally
{
}
}
public static void ReceiveDataFromMobile()
{
Lb_001:
{
try
{
string packet = null;
bool c = ReceiveARCPacket(SettingsManager.MobileAdress, SettingsManager.ApplicationAdress, out packet);
if (c)
{
if (packet.Substring(0, 14) == SettingsManager.MobileAdress)
{
// from 14 to 20 (accept)
string accept = packet.Substring(0, 20).Remove(0, 14);
// from 20 to 28 (command)
string command = packet.Substring(0, 28).Remove(0, 20);
// from 28 to 32 (timeout)
Int32 timeout = Int32.Parse(packet.Substring(0, 32).Remove(0, 28));
// from 32 to 40 (crc)
string checksum = packet.Substring(0, 40).Remove(0, 32);
Timeout = timeout * 1000;
object obj = null;
byte[] data = SEA.DecryptFromBase64(packet.Remove(0, 40));
string crcdt = ComputeCRC32(data);
if (crcdt == checksum)
{
string o = "";
try
{
obj = ProcessCommand(command, data, out o);
goto Lb_003;
}
catch
{
SendPacket(SettingsManager.ApplicationAdress, SettingsManager.MobileAdress, BuildARCPacket("SHOWTEXT", "ALDATA", SettingsManager.ApplicationAdress, "0005", Encoding.UTF8.GetBytes("Error while executing command")));
}
Lb_003:
{
if (o != "DONOT")
{
if (accept == "STRING")
{
SendPacket(SettingsManager.ApplicationAdress, SettingsManager.MobileAdress, BuildARCPacket("SHOWTEXT", "ALDATA", SettingsManager.ApplicationAdress, "0005", Encoding.UTF8.GetBytes(obj.ToString())));
}
else if (accept == "AUDIOS")
{
// accept audio
if (o == "STRING" || o == "AUDIOS")
{
KavprotVoice.SpeakInWave(obj.ToString(), "C:\\ASC.wav");
SendPacket(SettingsManager.ApplicationAdress, SettingsManager.MobileAdress, BuildARCPacket("PLAYAUDI", "ALDATA", SettingsManager.ApplicationAdress, "0005", File.ReadAllBytes("C:\\ASC.wav")));
}
}
else
{
if (o == "STRING" || o == "AUDIOS")
{
KavprotVoice.SpeakInWave(obj.ToString(), "C:\\ASC.wav");
SendPacket(SettingsManager.ApplicationAdress, SettingsManager.MobileAdress, BuildARCPacket("PLAYAUDI", "ALDATA", SettingsManager.ApplicationAdress, "0005", File.ReadAllBytes("C:\\ASC.wav")));
}
}
}
}
}
else
{
SendPacket(SettingsManager.ApplicationAdress, SettingsManager.MobileAdress, BuildARCPacket("SHOWTEXT", "ALDATA", SettingsManager.ApplicationAdress, "0005", Encoding.UTF8.GetBytes("Data was modified, Cyclic redundancy check (UNMATCH)")));
}
}
}
}
catch (Exception ex)
{
SendPacket(SettingsManager.ApplicationAdress, SettingsManager.MobileAdress, BuildARCPacket("SHOWTEXT", "ALDATA", SettingsManager.ApplicationAdress, "0005", Encoding.UTF8.GetBytes(ex.Message)));
}
finally
{
}
}
// sleep for settings checktime
Thread.Sleep(Timeout);
goto Lb_001;
}
