internal Client(NetStream stream, String user, Int32 sec, System.Net.IPEndPoint ip)
{
Stream = stream;
Username = user;
SecurityLevel = sec;
Ip = ip;
}
internal static void HandleClient(NetStream stream, IPEndPoint ip)
{
try {
var ssl = new SslStream(stream);
ssl.AuthenticateAsServer(Certificate);
stream = ssl;
} catch (Exception e) {
stream.Write("ERR_SSL\r\n");
stream.Write(e.ToString());
return;
}
stream.Encoding = Encoding.ASCII;
var encdodingstring = stream.Read();
int codepage;
if (int.TryParse(encdodingstring, out codepage)) {
try {
var cpenc = Encoding.GetEncoding(codepage);
stream.Encoding = cpenc;
stream.Write("success");
} catch {
stream.Write("ERR_ENCODING_NOT_FOUND");
stream.Close();
return;
}
} else {
try {
var encoding = Encoding.GetEncoding(encdodingstring);
stream.Encoding = encoding;
stream.Write("success");
} catch {
stream.Write("ERR_ENCODING_NOT_FOUND");
stream.Close();
return;
}
}
try {
var cred = Authenticate(stream);
if (!cred.Successful) {
stream.Close();
return;
}
stream.Write("LOGIN_SUCCESS");
ClientLoop.BeginClient(new Client(stream, cred.Username, cred.SecurityLevel, ip));
} catch (Exception ex) {
stream.Write("ERR\r\n");
stream.Write(ex.ToString());
}
}
private static NewClientCredentials ConfigAuth(NetStream stream)
{
var ncc = new NewClientCredentials { Successful = false, SecurityLevel = -1, Username = null };
var userpass = stream.Read();
var ups = userpass.Split(new[] { ':' }, 2);
if (ups.Length < 2) {
stream.Write("ERR_AUTH_INVALID_USER_FORMAT");
stream.Close();
return ncc;
}
if (Userconf["user." + ups[0] + ".enabled"] != "true") {
stream.Write("ERR_AUTH_INVALID_CREDENTIALS");
return ncc;
}
var validhash = Userconf["user." + ups[0] + ".hash"];
var thishash = Hash(ups[1]);
if (validhash != thishash) {
stream.Write("ERR_AUTH_INVALID_CREDENTIALS");
return ncc;
}
var seclvlstr = Userconf["user." + ups[0] + ".sec"];
int sec;
if (!int.TryParse(seclvlstr, out sec)) {
stream.Write("ERR_ACCOUNT_NOT_AUTHORIZED");
return ncc;
}
ncc.Username = ups[0];
ncc.SecurityLevel = sec;
ncc.Successful = true;
Thread.CurrentThread.Name = ncc.Username;
return ncc;
}
private static NewClientCredentials Authenticate(NetStream stream)
{
var ncc = CustomAuthentication.CustomAuth(stream);
return ncc ?? ConfigAuth(stream);
}
private async void ConnectClick(object sender, EventArgs e) {
hostbox.Enabled = false;
userbox.Enabled = false;
passbox.Enabled = false;
var hsplit = hostbox.Text.Split(':');
var host = hsplit[0];
if (string.IsNullOrWhiteSpace(host)) {
Invoke(new Action(() => MessageBox.Show(this, "Please enter a host")));
hostbox.Enabled = true;
userbox.Enabled = true;
passbox.Enabled = true;
return;
}
var port = 3000;
if (hsplit.Length > 1) {
if (!int.TryParse(hsplit[1], out port)) {
Invoke(new Action(() => MessageBox.Show(this, "Port must be a number")));
hostbox.Enabled = true;
userbox.Enabled = true;
passbox.Enabled = true;
return;
}
}
SslStream ssl;
try {
var tcp = new TcpClient();
await tcp.ConnectAsync(host, port);
ssl = new SslStream(tcp);
} catch {
Invoke(new Action(() => MessageBox.Show(this, "Error connecting")));
hostbox.Enabled = true;
userbox.Enabled = true;
passbox.Enabled = true;
return;
}
try {
await ssl.AuthenticateAsClientAsync(host, ValidationCallback);
} catch {
Invoke(new Action(() => MessageBox.Show(this, "Error securing connection")));
hostbox.Enabled = true;
userbox.Enabled = true;
passbox.Enabled = true;
return;
}
Stream = ssl;
Stream.Encoding = Encoding.UTF8;
Stream.Write("utf-8");
Stream.Read();
Stream.Write(userbox.Text + ":" + passbox.Text);
var res = Stream.Read();
if (res.StartsWith("ERR")) {
if (res == "ERR_AUTH_INVALID_CREDENTIALS") {
Invoke(new Action(() => MessageBox.Show(this, "Bad username or password")));
} else if (res == "ERR_ACCOUNT_NOT_AUTHORIZED") {
Invoke(new Action(() => MessageBox.Show(this, "Account not authorized")));
} else {
Invoke(new Action(() => MessageBox.Show(this, "An unkown error occured during authentication")));
}
hostbox.Enabled = true;
userbox.Enabled = true;
passbox.Enabled = true;
return;
}
Properties.Settings.Default.hostname = hostbox.Text;
Properties.Settings.Default.username = userbox.Text;
#pragma warning disable 665
if (Properties.Settings.Default.remeberpass = rempass.Checked) {
#pragma warning restore 665
Properties.Settings.Default.password = passbox.Text;
} else {
Properties.Settings.Default.password = "";
}
Properties.Settings.Default.Save();
Hide();
new ConsoleForm().ShowDialog();
Close();
}
internal static NewClientCredentials CustomAuth(NetStream client)
{
return authMethod == null ? null : authMethod(client);
}
internal static void Hook(NetStream compatstream)
{
stream = compatstream;
Connected = true;
}
public SslStream(NetStream client) {
Encoding = client.Encoding;
UnderlyingStream = client.UnderlyingStream;
}
protected void RaiseNewClient(NetStream client, IPEndPoint ip)
{
new Thread(() => {
try {
NewClient(client, ip);
} catch (Exception e) {
Debug.WriteLine("First chance exception occured in " +
Assembly.GetAssembly(GetType()).GetName().FullName +
" while trying to call NetStreamHost.NewClient. Details below.\r\n" + e);
}
}).Start();
}