/// <summary>
/// Verify User Name, Password, User Status and Policy against Active Directory
/// </summary>
public ActiveDirectoryCredentialValidationResult VerifyCredential(string userName, string password)
{
var login = CanonicalizeUserName(userName);
try
{
_logger.Debug($"Verifying user {login} credential and status at {_configuration.Domain}");
using (var connection = new LdapConnection(_configuration.Domain))
{
connection.Credential = new NetworkCredential(login, password);
connection.Bind();
}
_logger.Information($"User {login} credential and status verified successfully at {_configuration.Domain}");
var checkGroupMembership = !string.IsNullOrEmpty(_configuration.ActiveDirectory2FaGroup);
if (checkGroupMembership)
{
using (var ctx = new PrincipalContext(ContextType.Domain, _configuration.Domain, login, password))
{
using (var user = UserPrincipal.FindByIdentity(ctx, login))
{
//user must be member of security group
if (checkGroupMembership)
{
_logger.Debug($"Verifying user {login} is member of {_configuration.ActiveDirectory2FaGroup} group");
var isMemberOf = user.IsMemberOf(ctx, IdentityType.Name, _configuration.ActiveDirectory2FaGroup);
if (!isMemberOf)
{
_logger.Information($"User {login} is NOT member of {_configuration.ActiveDirectory2FaGroup} group");
_logger.Information($"Bypass second factor for user {login}");
return(ActiveDirectoryCredentialValidationResult.ByPass());
}
_logger.Information($"User {login} is member of {_configuration.ActiveDirectory2FaGroup} group");
}
}
}
}
return(ActiveDirectoryCredentialValidationResult.Ok()); //OK
}
catch (LdapException lex)
{
var result = ActiveDirectoryCredentialValidationResult.KnownError(lex.ServerErrorMessage);
_logger.Warning(lex.ServerErrorMessage);
_logger.Warning($"Verification user {login} at {_configuration.Domain} failed: {result.Reason}");
return(result);
}
catch (Exception ex)
{
_logger.Error(ex, $"Verification user {login} at {_configuration.Domain} failed.");
return(ActiveDirectoryCredentialValidationResult.UnknowError());
}
}
/// <summary>
/// Verify User Name, Password, User Status and Policy against Active Directory
/// </summary>
public ActiveDirectoryCredentialValidationResult VerifyCredential(string userName, string password)
{
if (string.IsNullOrEmpty(userName))
{
throw new ArgumentNullException(nameof(userName));
}
if (string.IsNullOrEmpty(password))
{
_logger.Error($"Empty password provided for user '{userName}'");
return(ActiveDirectoryCredentialValidationResult.UnknowError("Invalid credentials"));
}
var user = LdapIdentity.ParseUser(userName);
try
{
_logger.Debug($"Verifying user '{user.Name}' credential and status at {_configuration.Domain}");
using (var connection = new LdapConnection(_configuration.Domain))
{
connection.Credential = new NetworkCredential(user.Name, password);
connection.Bind();
_logger.Information($"User '{user.Name}' credential and status verified successfully at {_configuration.Domain}");
var domain = LdapIdentity.FqdnToDn(_configuration.Domain);
var isProfileLoaded = LoadProfile(connection, domain, user, out var profile);
if (!isProfileLoaded)
{
return(ActiveDirectoryCredentialValidationResult.UnknowError("Unable to load profile"));
}
var checkGroupMembership = !string.IsNullOrEmpty(_configuration.ActiveDirectory2FaGroup);
if (checkGroupMembership)
{
var isMemberOf = IsMemberOf(connection, profile.BaseDn, user, _configuration.ActiveDirectory2FaGroup);
if (!isMemberOf)
{
_logger.Information($"User '{user.Name}' is NOT member of {_configuration.ActiveDirectory2FaGroup} group");
_logger.Information($"Bypass second factor for user '{user.Name}'");
return(ActiveDirectoryCredentialValidationResult.ByPass());
}
_logger.Information($"User '{user.Name}' is member of {_configuration.ActiveDirectory2FaGroup} group");
}
var result = ActiveDirectoryCredentialValidationResult.Ok();
result.DisplayName = profile.DisplayName;
result.Email = profile.Email;
if (_configuration.UseActiveDirectoryUserPhone)
{
result.Phone = profile.Phone;
}
if (_configuration.UseActiveDirectoryMobileUserPhone)
{
result.Phone = profile.Mobile;
}
return(result);
}
}
catch (LdapException lex)
{
var result = ActiveDirectoryCredentialValidationResult.KnownError(lex.ServerErrorMessage);
_logger.Warning($"Verification user '{user.Name}' at {_configuration.Domain} failed: {result.Reason}");
return(result);
}
catch (Exception ex)
{
_logger.Error(ex, $"Verification user '{user.Name}' at {_configuration.Domain} failed.");
return(ActiveDirectoryCredentialValidationResult.UnknowError());
}
}