private static ILoginResult TryLogin(SeededPrimitiveConnection seedConn, IAuthPromptResponse authPrompt)
{
var(seed, conn) = seedConn;
var username = authPrompt.Username;
var password = authPrompt.Password;
var securedPassword = Md5Sum(string.Concat(seed, Md5Sum(password)));
var loginCmd = new SystemCommand(SystemOp.Login);
var loginMessage = new MessageBuilder(loginCmd).Add(username).Add(securedPassword);
loginMessage.Send(conn);
var(matched, authResult, description) = conn.ReceiveSystemStringCommand(SystemOp.LoginResult);
if (!matched)
{
return(new InvalidProtocolLoginResult("login result listen"));
}
var authenticated = CommandUnpacking.Value(authResult) == 0;
if (!authenticated)
{
return(new UserLoginException(description ?? "(no description)"));
}
return(new SuccessLoginResult());
}
public static (bool matched, ushort command, string?payload) ReceiveSystemStringCommand(
this IPrimitiveSource src, SystemOp expectedOp)
{
// ArgumentNullException need a parameter name, but `src` isn't technically a parameter, and code analysis
// fails if we try to pass `nameof(src)` in. Hmm.
if (src is null)
{
throw new ArgumentException("Source on which this method was invoked is null.");
}
var cmd = src.ReceiveCommand();
_ = src.ReceiveUint(); // Discard length
var isRightGroup = CommandUnpacking.Group(cmd) == CommandGroup.System;
var isRightOp = CommandUnpacking.SystemOp(cmd) == expectedOp;
var isRightCommand = isRightGroup && isRightOp;
return(isRightCommand ? (true, cmd, src.ReceiveString()) : (false, default, null));
public void TestCommandGroup(CommandGroup expectedGroup)
{
Assert.Equal(expectedGroup, CommandUnpacking.Group(expectedGroup.ToWordBits()));
}
