gistfile1.txt

sm_marid_is_fqdn(sm_marid *context, char const *s)
{
        int     saw_dot = 0;

        if (s == NULL || *s == '\0')
        {
                sm_marid_log(context, SM_MARID_LOG_FAIL,
                        "*** domain is %s ***",
                        s == NULL ? "null" : "empty");
                return 0;
        }

        for (;;)
        {
                if (!FQDN_ISLETDIG(*s))
                {
                        sm_marid_log(context, SM_MARID_LOG_FAIL,
                                "*** domain segment starts with '%c', which "
                                "is not a letter or digit ***", *s);
                        return 0;
                }