private static ApiErrorItem ParseLdapException()

in src/Zyborg.PassCore.PasswordProvider.LDAP/LdapPasswordChangeProvider.cs [170:197]

• 24 lines of code
• 4 McCabe index (conditional complexity)

        private static ApiErrorItem ParseLdapException(LdapException ex)
        {
            // If the LDAP server returned an error, it will be formatted
            // similar to this:
            //    "0000052D: AtrErr: DSID-03191083, #1:\n\t0: 0000052D: DSID-03191083, problem 1005 (CONSTRAINT_ATT_TYPE), data 0, Att 9005a (unicodePwd)\n\0"
            //
            // The leading number before the ':' is the Win32 API Error Code in HEX
            if (ex.LdapErrorMessage == null)
            {
                return new ApiErrorItem(ApiErrorCode.LdapProblem, "Unexpected null exception");
            }

            var m = Regex.Match(ex.LdapErrorMessage, "([0-9a-fA-F]+):");

            if (!m.Success)
            {
                return new ApiErrorItem(ApiErrorCode.LdapProblem, $"Unexpected error: {ex.LdapErrorMessage}");
            }

            var errCodeString = m.Groups[1].Value;
            var errCode = int.Parse(errCodeString, NumberStyles.HexNumber, CultureInfo.InvariantCulture);
            var err = Win32ErrorCode.ByCode(errCode);

            return err == null
                ? new ApiErrorItem(ApiErrorCode.LdapProblem, $"Unexpected Win32 API error; error code: {errCodeString}")
                : new ApiErrorItem(ApiErrorCode.InvalidCredentials,
                    $"Resolved Win32 API Error: code={err.Code} name={err.CodeName} desc={err.Description}");
        }