173 res_hnok(const char *dn) {  in res_hnok()  argument
174 	int pch = PERIOD, ch = *dn++;  in res_hnok()
177 		int nch = *dn++;  in res_hnok()
201 res_ownok(const char *dn) {  in res_ownok()  argument
202 	if (asterchar(dn[0])) {  in res_ownok()
203 		if (periodchar(dn[1]))  in res_ownok()
204 			return (res_hnok(dn+2));  in res_ownok()
205 		if (dn[1] == '\0')  in res_ownok()
208 	return (res_hnok(dn));  in res_ownok()
216 res_mailok(const char *dn) {  in res_mailok()  argument
220 	if (*dn == '\0')  in res_mailok()
224 	while ((ch = *dn++) != '\0') {  in res_mailok()
235 		return (res_hnok(dn));  in res_mailok()
244 res_dnok(const char *dn) {  in res_dnok()  argument
247 	while ((ch = *dn++) != '\0')  in res_dnok()