public Decode(byte[] buffer)
{
try
{
byte[] _tempbuff = new byte[buffer.Length];
EncDec endc = new EncDec();
_tempbuff = endc.Crypt(buffer);
ms = new MemoryStream(_tempbuff);
br = new BinaryReader(ms);
dataSize = (ushort)br.ReadInt16();
tempbuff = new byte[dataSize];
Buffer.BlockCopy(_tempbuff, 0, tempbuff, 0, dataSize);
br.Close();
ms.Close();
br.Dispose();
ms.Dispose();
_tempbuff = null;
endc = null;
}
catch (Exception) { }
}
public void ReceiveData(IAsyncResult ar)
{
Socket wSocket = (Socket)ar.AsyncState;
try
{
if (wSocket.Connected)
{
int recvSize = wSocket.EndReceive(ar); // get the count of received bytes
bool checkData = true;
if (recvSize > 0)
{
if ((recvSize + bufCount) > MAX_BUFFER) // that may be a try to force buffer overflow, we don't allow that ;)
{
checkData = false;
LocalDisconnect(wSocket);
}
else
{ // we have something in input buffer and it is not beyond our limits
Buffer.BlockCopy(tmpbuf, 0, buffer, bufCount, recvSize); // copy the new data to our buffer
bufCount += recvSize; // increase our buffer-counter
}
}
else
{ // 0 bytes received, this should be a disconnect
checkData = false;
LocalDisconnect(wSocket);
}
while (checkData) // repeat while we have data
{
checkData = false;
if (bufCount >= 4) // a minimum of 4 byte is required for us
{
byte[] _newtmp = new byte[bufCount];
Buffer.BlockCopy(buffer, 0, _newtmp, 0, bufCount);
LogDebug.HexDump(_newtmp, 16, true, true);
Decode de = new Decode(buffer); // only get the size first.
LogConsole.Show("bufCount: {0} dataSize: {1}", bufCount, de.dataSize);
if (bufCount >= (de.dataSize - 2)) // It's a complete packet. Call the handler.
{
de = new Decode(wSocket, de.tempbuff, this, Packets); // build up the Decode structure for next step
OnReceiveData(de); // call the handling routine
bufCount -= (de.dataSize); // decrease buffer-counter
if (bufCount >= 0) // was the buffer greater than what the packet needs? then it may be the next packet.
{
Buffer.BlockCopy(buffer, 2 + de.dataSize, buffer, 0, bufCount); // move the rest to buffer start
checkData = true; // loop for next packet
}
}
else
{
byte[] _tempddd = new byte[bufCount];
EncDec end = new EncDec();
byte[] dddxx = end.Crypt(buffer);
Buffer.BlockCopy(dddxx, 0, _tempddd, 0, de.dataSize);
LogConsole.Show("bufCount: {0} dataSize: {1}", bufCount, de.dataSize);
}
de = null;
}
}
// start the next async read
if (wSocket != null && wSocket.Connected)
{
wSocket.BeginReceive(tmpbuf, 0, tmpbuf.Length, SocketFlags.None, new AsyncCallback(ReceiveData), wSocket);
}
}
else
{
LocalDisconnect(wSocket);
}
}
catch (SocketException) // explicit handling of SocketException
{
LocalDisconnect(wSocket);
}
catch (Exception) // other exceptions
{
LocalDisconnect(wSocket);
}
}
public static void HexDump(byte[] bytes, params object[] arg)
{
if ((bool)arg[2] == true)
{
EncDec crypt = new EncDec();
bytes = crypt.Crypt(bytes);
}
if (bytes != null)
{
int bytesLength = bytes.Length;
char[] HexChars = "0123456789ABCDEF".ToCharArray();
int firstHexColumn =
8 // 8 characters for the address
+ 3; // 3 spaces
int firstCharColumn = firstHexColumn
+ (int)arg[0] * 3 // - 2 digit for the hexadecimal value and 1 space
+ ((int)arg[0] - 1) / 8 // - 1 extra space every 8 characters from the 9th
+ 2; // 2 spaces
int lineLength = firstCharColumn
+ (int)arg[0] // - characters to show the ascii value
+ Environment.NewLine.Length; // Carriage return and line feed (should normally be 2)
char[] line = (new String(' ', lineLength - 2) + Environment.NewLine).ToCharArray();
int expectedLines = (bytesLength + (int)arg[0] - 1) / (int)arg[0];
StringBuilder result = new StringBuilder(expectedLines * lineLength);
for (int i = 0; i < bytesLength; i += (int)arg[0])
{
line[0] = HexChars[(i >> 28) & 0xF];
line[1] = HexChars[(i >> 24) & 0xF];
line[2] = HexChars[(i >> 20) & 0xF];
line[3] = HexChars[(i >> 16) & 0xF];
line[4] = HexChars[(i >> 12) & 0xF];
line[5] = HexChars[(i >> 8) & 0xF];
line[6] = HexChars[(i >> 4) & 0xF];
line[7] = HexChars[(i >> 0) & 0xF];
int hexColumn = firstHexColumn;
int charColumn = firstCharColumn;
for (int j = 0; j < (int)arg[0]; j++)
{
if (j > 0 && (j & 7) == 0)
{
hexColumn++;
}
if (i + j >= bytesLength)
{
line[hexColumn] = ' ';
line[hexColumn + 1] = ' ';
line[charColumn] = ' ';
}
else
{
byte b = bytes[i + j];
line[hexColumn] = HexChars[(b >> 4) & 0xF];
line[hexColumn + 1] = HexChars[b & 0xF];
line[charColumn] = (b < 32 ? '·' : (char)b);
}
hexColumn += 3;
charColumn++;
}
result.Append(line);
}
string fff = result.ToString();
//file_log.WriteLine(fff);
if ((bool)arg[1] == true)
{
Console.WriteLine(fff);
}
}
}
