private bool CheckAuthenticationRequest(RemoteClient client, JToken msg)
{
if (msg == null || !msg.HasValues)
{
Logger.Warn("WifiRemote: Client sent empty authentication String");
return(false);
}
AuthMethod auth = AllowedAuth;
if (auth == AuthMethod.None)
{
// Every auth request is valid for AuthMethod.None
client.UserId = null; //Use current client or logged in user
client.IsAuthenticated = true;
return(true);
}
JObject message = (JObject)msg;
// For AuthMethod.Both we have to check which method was choosen.
if (AllowedAuth == AuthMethod.Both)
{
if (message["AuthMethod"] == null)
{
Logger.Warn("WifiRemote: Client {0} authentification failed, no AuthMethod submitted", client);
return(false);
}
else
{
String authString = (string)message["AuthMethod"];
if (authString != null)
{
if (authString.Equals("userpass"))
{
auth = AuthMethod.UserPassword;
}
else if (authString.Equals("passcode"))
{
auth = AuthMethod.Passcode;
}
else
{
Logger.Warn("WifiRemote: Client " + client.ToString() + " authentification failed, invalid authMethod '" + authString + "'");
return(false);
}
}
}
}
// Check user credentials
if (auth == AuthMethod.UserPassword)
{
if (message["User"] != null && message["Password"] != null)
{
String user = (string)message["User"];
String pass = (string)message["Password"];
var id = VerifyUser(user, pass);
if (id != null)
{
client.AuthenticatedBy = auth;
client.User = user;
client.Password = pass;
client.UserId = id.Value;
client.IsAuthenticated = true;
Logger.Debug("WifiRemote: Client " + client.ToString() + " successfully authentificated by username and password");
return(true);
}
}
}
else if (auth == AuthMethod.Passcode)
{
if (message["PassCode"] != null)
{
String pass = (string)message["PassCode"];
if (pass.Equals(this.PassCode))
{
client.AuthenticatedBy = auth;
client.PassCode = pass;
client.UserId = null; //Use current client or logged in user
client.IsAuthenticated = true;
Logger.Debug("WifiRemote: Client " + client.ToString() + " successfully authentificated by passcode");
return(true);
}
}
}
Logger.Warn("WifiRemote: Client " + client.ToString() + " authentification failed");
return(false);
}
/// <summary>
/// Sets the remote client associated with the socket
/// </summary>
/// <param name="socket">socket</param>
/// <param name="client">remote clien</param>
public static void SetRemoteClient(this AsyncSocket socket, RemoteClient client)
{
RemoteClients.TryAdd(socket, client);
}
/// <summary>
/// Read a message from the client.
/// </summary>
/// <param name="sender"></param>
/// <param name="data"></param>
/// <param name="tag"></param>
private void NewSocket_DidRead(AsyncSocket sender, byte[] data, long tag)
{
string msg = null;
try
{
msg = Encoding.UTF8.GetString(data);
//comment this out to log all received commands
//Logger.Debug("WifiRemote: " + msg);
// Get json object
JObject message = JObject.Parse(msg);
string type = (string)message["Type"];
RemoteClient client = sender.GetRemoteClient();
// Autologin handling
// Has to be activated in WifiRemote configuration.
string clientKey = (string)message["AutologinKey"];
// Key is set: try to authenticate by AutoLoginKey
if (clientKey != null && !client.IsAuthenticated)
{
if (AutologinTimeout > 0)
{
AutoLoginToken token = new AutoLoginToken(clientKey, client);
// the client token is in the list
foreach (AutoLoginToken aToken in _loginTokens)
{
if (aToken.Key == token.Key)
{
// Check if the autologin key was issued within the timeout
TimeSpan elapsed = DateTime.Now - aToken.Issued;
client.IsAuthenticated = (elapsed.Minutes < AutologinTimeout);
client = aToken.Client;
// Renew the timeout
aToken.Issued = DateTime.Now;
}
}
// MediaPortal was rebooted (will wipe all AutoLoginKeys) or
// autologin time out period is over (configurable in settings).
//
// Tell the client to reauthenticate.
if (!client.IsAuthenticated)
{
Logger.Debug("WifiRemote: AutoLoginToken timed out. Client needs to reauthenticate.");
TellClientToReAuthenticate(sender);
return;
}
}
else
{
Logger.Debug("WifiRemote: AutoLogin is disabled but client tried to auto-authenticate.");
TellClientToReAuthenticate(sender);
return;
}
}
// The client is already authentificated or we don't need authentification
if (type != null && client.IsAuthenticated && type != "identify")
{
Func <JObject, SocketServer, AsyncSocket, Task <bool> > function;
if (MessageType.TryGetValue(type, out function))
{
Logger.Debug("WifiRemote: MessageType: {0} got called", type);
function.Invoke(message, this, sender);
}
else
{
Logger.Warn("WifiRemote: Couldn't get MessageType: {0}", type);
}
}
else
{
// user is not yet authenticated
if (type == "identify")
{
// Save client name if supplied
if (message["Name"] != null)
{
client.ClientName = (string)message["Name"];
}
// Save client description if supplied
if (message["Description"] != null)
{
client.ClientDescription = (string)message["Description"];
}
// Save application name if supplied
if (message["Application"] != null)
{
client.ApplicationName = (string)message["Application"];
}
// Save application version if supplied
if (message["Version"] != null)
{
client.ApplicationVersion = (string)message["Version"];
}
// Authentication
if (AllowedAuth == AuthMethod.None || CheckAuthenticationRequest(client, message["Authenticate"]))
{
// User successfully authenticated
sender.GetRemoteClient().IsAuthenticated = true;
SendAuthenticationResponse(sender, true);
SendMessageOverviewInformation.Send(sender);
}
else
{
// Client sends a message other then authenticate when not yet
// authenticated or authenticate failed
SendAuthenticationResponse(sender, false);
}
}
else
{
// Client needs to authenticate first
TellClientToReAuthenticate(sender);
}
}
}
catch (Exception e)
{
Logger.Error("WifiRemote: Communication Error", e);
}
// Continue listening
sender.Read(AsyncSocket.CRLFData, -1, 0);
}
public AutoLoginToken(string key, RemoteClient client)
{
Key = key;
Issued = DateTime.Now;
Client = client;
}
