libc/net/getaddrinfo.c

319 	/* external reference: pai, error, and label free */	\
320 	(ai) = get_ai(pai, (afd), (addr));			\
337 	/* external reference: pai, error and label free */	\
338 	error = get_canonname(pai, (ai), (str));		\
462 	struct addrinfo *pai;
477 	pai = &ai;
478 	pai->ai_flags = 0;
479 	pai->ai_family = PF_UNSPEC;
480 	pai->ai_socktype = ANY;
481 	pai->ai_protocol = ANY;
482 	pai->ai_addrlen = 0;
483 	pai->ai_canonname = NULL;
484 	pai->ai_addr = NULL;
485 	pai->ai_next = NULL;
506 		memcpy(pai, hints, sizeof(*pai));
512 		if (pai->ai_socktype != ANY && pai->ai_protocol != ANY) {
514 				if (pai->ai_family != ex->e_af)
520 				if (pai->ai_socktype == ex->e_socktype
521 				 && pai->ai_protocol != ex->e_protocol) {
528 	if ((pai->ai_flags & AI_ADDRCONFIG) != 0 && addrconfig(&mask) == -1)
536 	if (MATCH_FAMILY(pai->ai_family, PF_INET, 1)
538 	 || MATCH_FAMILY(pai->ai_family, PF_INET6, 1)
541 		ai0 = *pai;	/* backup *pai */
543 		if (pai->ai_family == PF_UNSPEC) {
545 			pai->ai_family = PF_INET6;
547 			pai->ai_family = PF_INET;
550 		error = get_portmatch(pai, servname, &svd);
554 		*pai = ai0;
557 	ai0 = *pai;
561 		*pai = ai0;
571 		if (!MATCH_FAMILY(pai->ai_family, ex->e_af, WILD_AF(ex)))
573 		if (!MATCH(pai->ai_socktype, ex->e_socktype, WILD_SOCKTYPE(ex)))
575 		if (!MATCH(pai->ai_protocol, ex->e_protocol, WILD_PROTOCOL(ex)))
577 		if (pai->ai_family == PF_UNSPEC)
578 			pai->ai_family = ex->e_af;
579 		if (pai->ai_socktype == ANY && ex->e_socktype != ANY)
580 			pai->ai_socktype = ex->e_socktype;
581 		if (pai->ai_protocol == ANY && ex->e_protocol != ANY)
582 			pai->ai_protocol = ex->e_protocol;
585 			error = explore_null(pai, servname, &cur->ai_next,
588 			error = explore_numeric_scope(pai, hostname, servname,
610 	if (pai->ai_flags & AI_NUMERICHOST)
619 		*pai = ai0;
629 		if (pai->ai_family != ex->e_af)
632 		if (!MATCH(pai->ai_socktype, ex->e_socktype,
636 		if (!MATCH(pai->ai_protocol, ex->e_protocol,
641 		if (pai->ai_socktype == ANY && ex->e_socktype != ANY)
642 			pai->ai_socktype = ex->e_socktype;
643 		if (pai->ai_protocol == ANY && ex->e_protocol != ANY)
644 			pai->ai_protocol = ex->e_protocol;
646 		error = explore_fqdn(pai, hostname, servname, &cur->ai_next,
1155 explore_fqdn(const struct addrinfo *pai, const char *hostname,
1168 	_DIAGASSERT(pai != NULL);
1178 	if (get_portmatch(pai, servname, svd) != 0)
1182 	    default_dns_files, hostname, pai, servname)) {
1220 explore_null(const struct addrinfo *pai, const char *servname,
1229 	_DIAGASSERT(pai != NULL);
1241 	s = socket(pai->ai_family, SOCK_DGRAM, 0);
1251 	if (get_portmatch(pai, servname, svd) != 0)
1254 	afd = find_afd(pai->ai_family);
1258 	if (pai->ai_flags & AI_PASSIVE) {
1286 explore_numeric(const struct addrinfo *pai, const char *hostname,
1296 	_DIAGASSERT(pai != NULL);
1308 	if (get_portmatch(pai, servname, svd) != 0)
1311 	afd = find_afd(pai->ai_family);
1333 			if (pai->ai_family == afd->a_af ||
1334 			    pai->ai_family == PF_UNSPEC /*?*/) {
1337 				if ((pai->ai_flags & AI_CANONNAME)) {
1353 			if (pai->ai_family == afd->a_af ||
1354 			    pai->ai_family == PF_UNSPEC /*?*/) {
1357 				if ((pai->ai_flags & AI_CANONNAME)) {
1387 explore_numeric_scope(const struct addrinfo *pai, const char *hostname,
1391 	return explore_numeric(pai, hostname, servname, res, hostname, svd);
1400 	_DIAGASSERT(pai != NULL);
1408 	if (get_portmatch(pai, servname, svd) != 0)
1411 	afd = find_afd(pai->ai_family);
1416 		return explore_numeric(pai, hostname, servname, res, hostname,
1421 		return explore_numeric(pai, hostname, servname, res, hostname,
1435 	error = explore_numeric(pai, addr, servname, res, hostname, svd);
1458 get_canonname(const struct addrinfo *pai, struct addrinfo *ai, const char *str)
1461 	_DIAGASSERT(pai != NULL);
1465 	if ((pai->ai_flags & AI_CANONNAME) != 0) {
1488 get_ai(const struct addrinfo *pai, const struct afd *afd, const char *addr)
1494 	_DIAGASSERT(pai != NULL);
1503 	memcpy(ai, pai, sizeof(struct addrinfo));
1703     int qtype, const struct addrinfo *pai)
1724 	_DIAGASSERT(pai != NULL);
1868 			/* don't overwrite pai */
1869 			ai = *pai;
1969 			aip = _dns_query(&q, pai, res, 0);
1984 		       (void)get_canonname(pai, sentinel.ai_next,
2028 _dns_query(struct res_target *q, const struct addrinfo *pai,
2071 	ai = getanswer(res, buf, q->n, q->name, q->qtype, pai);
2078 		ai = getanswer(res, buf2, q2->n, q2->name, q2->qtype, pai);
2094     const struct addrinfo *pai)
2124 		if (pai->ai_socktype == srvnottype[i])
2150 		ai = _dns_query(&q, pai, res, 1);
2169 _dns_host_lookup(const char *name, const struct addrinfo *pai)
2182 	switch (pai->ai_family) {
2209 	ai = _dns_query(&q, pai, res, 1);
2228 	const struct addrinfo *pai;
2231 	pai = va_arg(ap, const struct addrinfo *);
2239 	    && (pai->ai_flags & AI_SRV)
2241 	    && !(pai->ai_flags & AI_NUMERICSERV)
2247 		ai = _dns_srv_lookup(name, servname, pai);
2258 		ai = _dns_host_lookup(name, pai);
2299 _gethtent(FILE **hostf, const char *name, const struct addrinfo *pai)
2309 	_DIAGASSERT(pai != NULL);
2343 	hints = *pai;
2350 		res->ai_flags = pai->ai_flags;
2352 		if (pai->ai_flags & AI_CANONNAME) {
2353 			if (get_canonname(pai, res, cname) != 0) {
2367 	const struct addrinfo *pai;
2376 	pai = va_arg(ap, const struct addrinfo *);
2382 	while ((p = _gethtent(&hostf, name, pai)) != NULL) {
2398 _yphostent(char *line, const struct addrinfo *pai)
2409 	_DIAGASSERT(pai != NULL);
2448 	hints = *pai;
2454 			res->ai_flags = pai->ai_flags;
2456 			if (pai->ai_flags & AI_CANONNAME)
2457 				(void)get_canonname(pai, res, canonname);
2485 	const struct addrinfo *pai;
2492 	pai = va_arg(ap, const struct addrinfo *);
2498 	if (pai->ai_family == PF_UNSPEC || pai->ai_family == PF_INET) {
2504 			ai4 = *pai;
2520 		ai = _yphostent(ypbuf, pai);