protected override async Task <AuthenticateResult> HandleAuthenticateAsync()
{
// skip authentication if endpoint has [AllowAnonymous] attribute
var endpoint = Context.GetEndpoint();
if (endpoint?.Metadata?.GetMetadata <IAllowAnonymous>() != null)
{
return(AuthenticateResult.NoResult());
}
if (!Request.Headers.ContainsKey("Authorization"))
{
return(AuthenticateResult.Fail("Missing Authorization Header"));
}
var authHeader = AuthenticationHeaderValue.Parse(Request.Headers["Authorization"]);
var credentialBytes = Convert.FromBase64String(authHeader.Parameter);
var credentials = Encoding.UTF8.GetString(credentialBytes).Split(new[] { ':' }, 2);
var username = credentials[0];
var password = credentials[1];
User user = await db.AuthAsync(username, password);
if (user == null)
{
return(AuthenticateResult.Fail("Invalid Username or Password"));
}
var claims = new[] {
new Claim(ClaimTypes.NameIdentifier, user.ID.ToString()),
new Claim(ClaimTypes.Name, user.Login),
};
var identity = new ClaimsIdentity(claims, Scheme.Name);
var principal = new ClaimsPrincipal(identity);
var ticket = new AuthenticationTicket(principal, Scheme.Name);
return(AuthenticateResult.Success(ticket));
}