protected override Task <AuthenticateResult> HandleAuthenticateAsync()
{
return(Task.Run(async() =>
{
// 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"))
{
Context.Response.Headers.Add("WWW-Authenticate", "Basic realm=\"Car shopping engine API\"");
return AuthenticateResult.Fail("Missing Authorization Header");
}
User user = null;
try
{
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 = await _db.Authenticate(username, password);
}
catch
{
return AuthenticateResult.Fail("Invalid Authorization Header");
}
if (user == null)
{
return AuthenticateResult.Fail("Invalid Username or Password");
}
var claims = new Claim[] {
new Claim(ClaimTypes.Name, user.Username),
new Claim(ClaimTypes.Role, user.Role.Trim())
};
var identity = new ClaimsIdentity(claims, Scheme.Name);
var principal = new ClaimsPrincipal(identity);
var ticket = new AuthenticationTicket(principal, Scheme.Name);
return AuthenticateResult.Success(ticket);
}));
}
public async Task <OutgoingUserDTO> Authenticate(string username, string password)
{
return((await _repository.Authenticate(username, password)).ToOutgoingDTO());
}
