void clientReceiver()
{
TcpClient socket = this.client.socket;
int reqLen = Helper.getBytes("msg").Length;
byte[] req = new byte[reqLen];
NetworkStream netStream = socket.GetStream();
while (socket.Connected)
{
socket.Client.Receive(req);
BinaryReader streamR = new BinaryReader(netStream);
if (Helper.getString(req).Equals("msg"))
{
string sender = streamR.ReadString();
DialogResult result =
MessageBox.Show(
"Accept the Incoming File from " + sender,
"Incoming Connection",
MessageBoxButtons.YesNo
);
if (result == DialogResult.Yes)
{
int dataLen = streamR.ReadInt32();
byte[] RecievedData = streamR.ReadBytes(dataLen);
//SaveFileName = streamR.ReadString();
Message m = (Message)Helper.deSerilize(RecievedData);
string sender_public_key = null;
foreach (SomeData item in clientList)
{
if (item.username.Equals(sender))
{
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
rsa.FromXmlString(CA);
bool autinticated = rsa.VerifyHash(
new SHA1Managed().ComputeHash(Helper.Serilize(item.info)),
CryptoConfig.MapNameToOID("SHA1"),
item.certificate
);
if (autinticated)
{
sender_public_key = item.info.publicKey;
}
else
{
string msg = "not secure connection with " + sender + "\n do you want to complete process?";
if (MessageBox.Show(msg, "warning", MessageBoxButtons.YesNo) == DialogResult.Yes)
{
sender_public_key = item.info.publicKey;
}
else
{
return;
}
}
break;
}
}
if (AsymmetricEncryption.verifyMsg(sender_public_key, m))
{
String res = AsymmetricEncryption.PGPDecrypt(m.msg, rsaProvider.ToXmlString(true));
client.saveFile(res, "D://" + info.username + "/" + m.file_name);
FileStream stream = new FileStream("D://" + info.username + "/" +
Path.GetFileNameWithoutExtension(m.file_name) + ".sign", FileMode.OpenOrCreate);
stream.WriteByte(0);
stream.Write(Helper.getBytes(sender_public_key), 0, sender_public_key.Length);
stream.WriteByte(1);
stream.Write(m.signature, 0, m.signature.Length);
stream.Close();
}
else
{
MessageBox.Show("not reliable message");
}
}
}
else if (Helper.getString(req).Equals("lst"))
{
clientList.Clear();
int len = streamR.ReadInt32();
for (int i = 0; i < len; i++)
{
SomeData itm = new SomeData();
int l = streamR.ReadInt32();
itm = (SomeData)Helper.deSerilize(streamR.ReadBytes(l));
clientList.Add(itm);
}
this.Invoke((MethodInvoker)(() => ShowData()));
}
}
}
