| public GetBytes ( ushort count ) : byte[] | ||
| count | ushort | Number of bytes to read. |
| return | byte[] | |
private void ReceiveData(IAsyncResult ar)
{
try
{
if (this.isDisconnected)
{
return;
}
if (!sock.Connected)
{
ClientManager.EnterCriticalArea();
this.Disconnect();
ClientManager.LeaveCriticalArea();
return;
}
try { stream.EndRead(ar); }
catch (Exception)
{
ClientManager.EnterCriticalArea();
this.Disconnect();
ClientManager.LeaveCriticalArea();
return;
}
byte[] raw = (byte[])ar.AsyncState;
if (alreadyReceived < lastSize)
{
int left = lastSize - alreadyReceived;
if (left > 1024)
{
left = 1024;
}
if (left > sock.Available)
{
left = sock.Available;
}
try
{
stream.BeginRead(raw, 4 + alreadyReceived, left, this.callbackData, raw);
}
catch (Exception ex)
{
Logger.ShowError(ex);
ClientManager.EnterCriticalArea();
this.Disconnect();
ClientManager.LeaveCriticalArea();
return;
}
alreadyReceived += left;
return;
}
raw = Crypt.Decrypt(raw, 8);
Packet p = new Packet();
p.data = raw;
uint length = p.GetUInt(4);
uint offset = 0;
while (offset < length)
{
uint size;
if (firstLevelLenth == 4)
{
size = p.GetUInt((ushort)(8 + offset));
}
else
{
size = p.GetUShort((ushort)(8 + offset));
}
offset += firstLevelLenth;
if (size + offset > length)
{
break;
}
Packet p2 = new Packet();
p2.data = p.GetBytes((ushort)size, (ushort)(8 + offset));
offset += size;
ProcessPacket(p2);
}
try
{
stream.BeginRead(buffer, 0, 4, this.callbackSize, null);
}
catch (Exception)
{
ClientManager.EnterCriticalArea();
this.Disconnect();
ClientManager.LeaveCriticalArea();
return;
}
}
catch (Exception e)
{
Logger.ShowError(e, null);
}
}
private void ReceiveKeyExchange(IAsyncResult ar)
{
try
{
if (this.isDisconnected)
{
return;
}
if (!sock.Connected)
{
ClientManager.EnterCriticalArea();
this.Disconnect();
ClientManager.LeaveCriticalArea();
return;
}
try { stream.EndRead(ar); }
catch (Exception)
{
ClientManager.EnterCriticalArea();
this.Disconnect();
ClientManager.LeaveCriticalArea();
return;
}
byte[] raw = (byte[])ar.AsyncState;
if (raw.Length == 8)
{
Packet p1 = new Packet(529);
p1.PutUInt(1, 4);
p1.PutByte(0x32, 8);
p1.PutUInt(0x100, 9);
Crypt.MakePrivateKey();
string bufstring = Conversions.bytes2HexString(Encryption.Module.getBytes());
p1.PutBytes(System.Text.Encoding.ASCII.GetBytes(bufstring.ToLower()), 13);
p1.PutUInt(0x100, 269);
bufstring = Conversions.bytes2HexString(Crypt.GetKeyExchangeBytes());
p1.PutBytes(System.Text.Encoding.ASCII.GetBytes(bufstring), 273);
SendPacket(p1, true, true);
try
{
byte[] data = new byte[260];
stream.BeginRead(data, 0, 260, this.callbackKeyExchange, data);
}
catch (Exception)
{
ClientManager.EnterCriticalArea();
this.Disconnect();
ClientManager.LeaveCriticalArea();
return;
}
}
else if (raw.Length == 260)
{
Packet p1 = new Packet();
p1.data = raw;
byte[] keyBuf = p1.GetBytes(256, 4);
Crypt.MakeAESKey(System.Text.Encoding.ASCII.GetString(keyBuf));
StartPacketParsing();
}
else if (raw.Length == 529)
{
Packet p1 = new Packet();
p1.data = raw;
byte[] keyBuf = p1.GetBytes(256, 273);
Crypt.MakePrivateKey();
Packet p2 = new Packet(260);
p2.PutUInt(0x100, 0);
string bufstring = Conversions.bytes2HexString(Crypt.GetKeyExchangeBytes());
p2.PutBytes(System.Text.Encoding.ASCII.GetBytes(bufstring), 4);
SendPacket(p2, true, true);
Crypt.MakeAESKey(System.Text.Encoding.ASCII.GetString(keyBuf));
StartPacketParsing();
}
}
catch (Exception ex)
{
Logger.ShowError(ex);
}
}
private void ReceiveKeyExchange(IAsyncResult ar)
{
try
{
if (this.isDisconnected)
{
return;
}
if (!sock.Connected)
{
ClientManager.EnterCriticalArea();
this.Disconnect();
ClientManager.LeaveCriticalArea();
return;
}
try { stream.EndRead(ar); }
catch (Exception)
{
ClientManager.EnterCriticalArea();
this.Disconnect();
ClientManager.LeaveCriticalArea();
return;
}
byte[] raw = (byte[])ar.AsyncState;
if (raw.Length == 8)
{
Packet p1 = new Packet(529);
p1.PutUInt(1, 4);
p1.PutByte(0x32, 8);
p1.PutUInt(0x100, 9);
Crypt.MakePrivateKey();
string bufstring = Conversions.bytes2HexString(Encryption.Module.getBytes());
p1.PutBytes(System.Text.Encoding.ASCII.GetBytes(bufstring.ToLower()), 13);
p1.PutUInt(0x100, 269);
bufstring = Conversions.bytes2HexString(Crypt.GetKeyExchangeBytes());
p1.PutBytes(System.Text.Encoding.ASCII.GetBytes(bufstring), 273);
SendPacket(p1, true, true);
try
{
byte[] data = new byte[260];
stream.BeginRead(data, 0, 260, this.callbackKeyExchange, data);
}
catch (Exception)
{
ClientManager.EnterCriticalArea();
this.Disconnect();
ClientManager.LeaveCriticalArea();
return;
}
}
else if (raw.Length == 260)
{
Packet p1 = new Packet();
p1.data = raw;
byte[] keyBuf = p1.GetBytes(256, 4);
Crypt.MakeAESKey(System.Text.Encoding.ASCII.GetString(keyBuf));
StartPacketParsing();
}
else if (raw.Length == 529)
{
Packet p1 = new Packet();
p1.data = raw;
byte[] keyBuf = p1.GetBytes(256, 273);
Crypt.MakePrivateKey();
Packet p2 = new Packet(260);
p2.PutUInt(0x100, 0);
string bufstring = Conversions.bytes2HexString(Crypt.GetKeyExchangeBytes());
p2.PutBytes(System.Text.Encoding.ASCII.GetBytes(bufstring), 4);
SendPacket(p2, true, true);
Crypt.MakeAESKey(System.Text.Encoding.ASCII.GetString(keyBuf));
StartPacketParsing();
}
}
catch (Exception ex)
{
Logger.ShowError(ex);
}
}
private void ReceiveData(IAsyncResult ar)
{
try
{
if (this.isDisconnected)
{
return;
}
if (!sock.Connected)
{
ClientManager.EnterCriticalArea();
this.Disconnect();
ClientManager.LeaveCriticalArea();
return;
}
try { stream.EndRead(ar); }
catch (Exception)
{
ClientManager.EnterCriticalArea();
this.Disconnect();
ClientManager.LeaveCriticalArea();
return;
}
byte[] raw = (byte[])ar.AsyncState;
if (alreadyReceived < lastSize)
{
int left = lastSize - alreadyReceived;
if (left > 1024)
left = 1024;
if (left > sock.Available) left = sock.Available;
try
{
stream.BeginRead(raw, 4 + alreadyReceived, left, this.callbackData, raw);
}
catch (Exception ex)
{
Logger.ShowError(ex);
ClientManager.EnterCriticalArea();
this.Disconnect();
ClientManager.LeaveCriticalArea();
return;
}
alreadyReceived += left;
return;
}
raw = Crypt.Decrypt(raw, 8);
Packet p = new Packet();
p.data = raw;
uint length = p.GetUInt(4);
uint offset = 0;
while (offset < length)
{
uint size;
if(firstLevelLenth ==4)
size= p.GetUInt((ushort)(8 + offset));
else
size = p.GetUShort((ushort)(8 + offset));
offset += firstLevelLenth;
if (size + offset > length)
break;
Packet p2 = new Packet();
p2.data = p.GetBytes((ushort)size, (ushort)(8 + offset));
offset += size;
ProcessPacket(p2);
}
try
{
stream.BeginRead(buffer, 0, 4, this.callbackSize, null);
}
catch (Exception)
{
ClientManager.EnterCriticalArea();
this.Disconnect();
ClientManager.LeaveCriticalArea();
return;
}
}
catch (Exception e)
{
Logger.ShowError(e, null);
}
}