libc/net/getaddrinfo.c

42  *   when globbing NULL hostname (to loopback, or wildcard).  Is it the right
46  *   (1) what should we do against numeric hostname (2) what should we do
47  *   against NULL hostname (3) what is AI_ADDRCONFIG itself.  AF not ready?
390 getaddrinfo(const char *hostname, const char *servname,
425 	if (hostname == NULL && servname == NULL)
519 	 * NULL hostname, or numeric hostname.
533 		if (hostname == NULL) {
544 			error = explore_numeric_scope(pai, hostname, servname,
549 			 * families that do not match that of hostname.
562 	if (hostname == NULL)
571 	 * hostname as alphabetical name.
574 	error = explore_fqdn(pai, hostname, servname, &afai_unspec);
1170  * hostname == NULL.
1222  * numeric hostname
1225 explore_numeric(const struct addrinfo *pai, const char *hostname,
1245 		if (hostname[0] != '/')
1247 		if (strlen(hostname) > afd->a_addrlen)
1250 		strncpy(path, hostname, afd->a_addrlen);
1261 		if (inet_aton(hostname, (struct in_addr *)pton) != 1)
1266 		if (inet_pton(afd->a_af, hostname, pton) != 1) {
1270 			if (inet_aton(hostname, (struct in_addr *)pton) != 1)
1312  * numeric hostname with scope
1315 explore_numeric_scope(const struct addrinfo *pai, const char *hostname,
1319 	return explore_numeric(pai, hostname, servname, res, hostname);
1332 		return explore_numeric(pai, hostname, servname, res, hostname);
1334 	cp = strchr(hostname, SCOPE_DELIMITER);
1336 		return explore_numeric(pai, hostname, servname, res, hostname);
1341 	hostname2 = strdup(hostname);
1345 	hostname2[cp - hostname] = '\0';
1349 	error = explore_numeric(pai, addr, servname, res, hostname);
1724 	char *hostname;
1735 	hostname = va_arg(ap, char *);
1739 	if (hostname != NULL) {
1740 		size = strlen(hostname);
1778 	if (hostname != NULL)
1779 		memcpy(p, hostname, size);
1894  * FQDN hostname, DNS lookup
1897 explore_fqdn(const struct addrinfo *pai, const char *hostname,
1929 			default_dns_files, hostname, pai)) {
2246 	const char *hostname;
2252 	hostname = va_arg(ap, char *);
2283 		q.name = hostname;
2289 		q2.name = hostname;
2296 		q.name = hostname;
2303 		q.name = hostname;
2322 	if (res_searchN(hostname, &q, res) < 0) {