2 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the project nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * "#ifdef FAITH" part is local hack for supporting IPv4-v6 translator.
33 * Issues to be discussed:
34 * - Thread safe-ness must be checked.
35 * - Return values. There are nonstandard return values defined and used
36 * in the source code. This is because RFC2553 is silent about which error
37 * code must be returned for which situation.
39 * - We use getipnodebyname() just for thread-safeness. There's no intent
40 * to let it do PF_UNSPEC (actually we never pass PF_UNSPEC to
42 * - The code filters out AFs that are not supported by the kernel,
43 * when globbing NULL hostname (to loopback, or wildcard). Is it the right
44 * thing to do? What is the relationship with post-RFC2553 AI_ADDRCONFIG
53 static const char rcsid[] _U_ =
54 "@(#) $Header: /tcpdump/master/tcpdump/missing/getaddrinfo.c,v 1.13 2003-11-16 09:36:48 guy Exp $";
57 #include <sys/types.h>
58 #include <sys/param.h>
60 #include <sys/sysctl.h>
62 #include <sys/socket.h>
64 #include <netinet/in.h>
65 #include <arpa/inet.h>
66 #include <arpa/nameser.h>
77 #ifndef HAVE_U_INT32_T
81 #ifndef HAVE_SOCKADDR_STORAGE
82 #include "sockstorage.h"
85 #ifdef NEED_ADDRINFO_H
89 #if defined(__KAME__) && defined(INET6)
99 static int translate = NO;
100 static struct in6_addr faith_prefix = IN6ADDR_ANY_INIT;
103 static const char in_addrany[] = { 0, 0, 0, 0 };
104 static const char in6_addrany[] = {
105 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
107 static const char in_loopback[] = { 127, 0, 0, 1 };
108 static const char in6_loopback[] = {
109 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1
116 u_int32_t si_scope_id;
119 static const struct afd {
124 const char *a_addrany;
125 const char *a_loopback;
129 {PF_INET6, sizeof(struct in6_addr),
130 sizeof(struct sockaddr_in6),
131 offsetof(struct sockaddr_in6, sin6_addr),
132 in6_addrany, in6_loopback, 1},
134 {PF_INET, sizeof(struct in_addr),
135 sizeof(struct sockaddr_in),
136 offsetof(struct sockaddr_in, sin_addr),
137 in_addrany, in_loopback, 0},
138 {0, 0, 0, 0, NULL, NULL, 0},
145 const char *e_protostr;
147 #define WILD_AF(ex) ((ex)->e_wild & 0x01)
148 #define WILD_SOCKTYPE(ex) ((ex)->e_wild & 0x02)
149 #define WILD_PROTOCOL(ex) ((ex)->e_wild & 0x04)
152 static const struct explore explore[] = {
154 { PF_LOCAL, 0, ANY, ANY, NULL, 0x01 },
157 { PF_INET6, SOCK_DGRAM, IPPROTO_UDP, "udp", 0x07 },
158 { PF_INET6, SOCK_STREAM, IPPROTO_TCP, "tcp", 0x07 },
159 { PF_INET6, SOCK_RAW, ANY, NULL, 0x05 },
161 { PF_INET, SOCK_DGRAM, IPPROTO_UDP, "udp", 0x07 },
162 { PF_INET, SOCK_STREAM, IPPROTO_TCP, "tcp", 0x07 },
163 { PF_INET, SOCK_RAW, ANY, NULL, 0x05 },
164 { -1, 0, 0, NULL, 0 },
174 static int str_isnumber (const char *);
175 static int explore_fqdn (const struct addrinfo *, const char *,
176 const char *, struct addrinfo **);
177 static int explore_null (const struct addrinfo *, const char *,
178 const char *, struct addrinfo **);
179 static int explore_numeric (const struct addrinfo *, const char *,
180 const char *, struct addrinfo **);
181 static int explore_numeric_scope (const struct addrinfo *, const char *,
182 const char *, struct addrinfo **);
183 static int get_name (const char *, const struct afd *, struct addrinfo **,
184 char *, const struct addrinfo *, const char *);
185 static int get_canonname (const struct addrinfo *,
186 struct addrinfo *, const char *);
187 static struct addrinfo *get_ai (const struct addrinfo *,
188 const struct afd *, const char *);
189 static int get_portmatch (const struct addrinfo *, const char *);
190 static int get_port (struct addrinfo *, const char *, int);
191 static const struct afd *find_afd (int);
193 static char *ai_errlist[] = {
195 "Address family for hostname not supported", /* EAI_ADDRFAMILY */
196 "Temporary failure in name resolution", /* EAI_AGAIN */
197 "Invalid value for ai_flags", /* EAI_BADFLAGS */
198 "Non-recoverable failure in name resolution", /* EAI_FAIL */
199 "ai_family not supported", /* EAI_FAMILY */
200 "Memory allocation failure", /* EAI_MEMORY */
201 "No address associated with hostname", /* EAI_NODATA */
202 "hostname nor servname provided, or not known", /* EAI_NONAME */
203 "servname not supported for ai_socktype", /* EAI_SERVICE */
204 "ai_socktype not supported", /* EAI_SOCKTYPE */
205 "System error returned in errno", /* EAI_SYSTEM */
206 "Invalid value for hints", /* EAI_BADHINTS */
207 "Resolved protocol is unknown", /* EAI_PROTOCOL */
208 "Unknown error", /* EAI_MAX */
211 /* XXX macros that make external reference is BAD. */
213 #define GET_AI(ai, afd, addr) \
215 /* external reference: pai, error, and label free */ \
216 (ai) = get_ai(pai, (afd), (addr)); \
217 if ((ai) == NULL) { \
218 error = EAI_MEMORY; \
223 #define GET_PORT(ai, serv) \
225 /* external reference: error and label free */ \
226 error = get_port((ai), (serv), 0); \
231 #define GET_CANONNAME(ai, str) \
233 /* external reference: pai, error and label free */ \
234 error = get_canonname(pai, (ai), (str)); \
241 /* external reference: error, and label bad */ \
246 #define MATCH_FAMILY(x, y, w) \
247 ((x) == (y) || ((w) && ((x) == PF_UNSPEC || (y) == PF_UNSPEC)))
248 #define MATCH(x, y, w) \
249 ((x) == (y) || ((w) && ((x) == ANY || (y) == ANY)))
255 if (ecode < 0 || ecode > EAI_MAX)
257 return ai_errlist[ecode];
264 struct addrinfo *next;
268 if (ai->ai_canonname)
269 free(ai->ai_canonname);
270 /* no need to free(ai->ai_addr) */
272 } while ((ai = next) != NULL);
289 getaddrinfo(hostname, servname, hints, res)
290 const char *hostname, *servname;
291 const struct addrinfo *hints;
292 struct addrinfo **res;
294 struct addrinfo sentinel;
295 struct addrinfo *cur;
299 struct addrinfo *pai;
300 const struct afd *afd;
301 const struct explore *ex;
304 static int firsttime = 1;
307 /* translator hack */
308 char *q = getenv("GAI");
309 if (q && inet_pton(AF_INET6, q, &faith_prefix) == 1)
315 sentinel.ai_next = NULL;
319 pai->ai_family = PF_UNSPEC;
320 pai->ai_socktype = ANY;
321 pai->ai_protocol = ANY;
323 pai->ai_canonname = NULL;
327 if (hostname == NULL && servname == NULL)
330 /* error check for hints */
331 if (hints->ai_addrlen || hints->ai_canonname ||
332 hints->ai_addr || hints->ai_next)
333 ERR(EAI_BADHINTS); /* xxx */
334 if (hints->ai_flags & ~AI_MASK)
336 switch (hints->ai_family) {
346 memcpy(pai, hints, sizeof(*pai));
349 * if both socktype/protocol are specified, check if they
350 * are meaningful combination.
352 if (pai->ai_socktype != ANY && pai->ai_protocol != ANY) {
353 for (ex = explore; ex->e_af >= 0; ex++) {
354 if (pai->ai_family != ex->e_af)
356 if (ex->e_socktype == ANY)
358 if (ex->e_protocol == ANY)
360 if (pai->ai_socktype == ex->e_socktype
361 && pai->ai_protocol != ex->e_protocol) {
369 * check for special cases. (1) numeric servname is disallowed if
370 * socktype/protocol are left unspecified. (2) servname is disallowed
371 * for raw and other inet{,6} sockets.
373 if (MATCH_FAMILY(pai->ai_family, PF_INET, 1)
375 || MATCH_FAMILY(pai->ai_family, PF_INET6, 1)
380 if (pai->ai_family == PF_UNSPEC) {
382 pai->ai_family = PF_INET6;
384 pai->ai_family = PF_INET;
387 error = get_portmatch(pai, servname);
396 /* NULL hostname, or numeric hostname */
397 for (ex = explore; ex->e_af >= 0; ex++) {
400 if (!MATCH_FAMILY(pai->ai_family, ex->e_af, WILD_AF(ex)))
402 if (!MATCH(pai->ai_socktype, ex->e_socktype, WILD_SOCKTYPE(ex)))
404 if (!MATCH(pai->ai_protocol, ex->e_protocol, WILD_PROTOCOL(ex)))
407 if (pai->ai_family == PF_UNSPEC)
408 pai->ai_family = ex->e_af;
409 if (pai->ai_socktype == ANY && ex->e_socktype != ANY)
410 pai->ai_socktype = ex->e_socktype;
411 if (pai->ai_protocol == ANY && ex->e_protocol != ANY)
412 pai->ai_protocol = ex->e_protocol;
414 if (hostname == NULL)
415 error = explore_null(pai, hostname, servname, &cur->ai_next);
417 error = explore_numeric_scope(pai, hostname, servname, &cur->ai_next);
422 while (cur && cur->ai_next)
428 * If numreic representation of AF1 can be interpreted as FQDN
429 * representation of AF2, we need to think again about the code below.
431 if (sentinel.ai_next)
434 if (pai->ai_flags & AI_NUMERICHOST)
436 if (hostname == NULL)
440 * hostname as alphabetical name.
441 * we would like to prefer AF_INET6 than AF_INET, so we'll make a
444 for (afd = afdl; afd->a_af; afd++) {
447 if (!MATCH_FAMILY(pai->ai_family, afd->a_af, 1))
450 for (ex = explore; ex->e_af >= 0; ex++) {
453 if (pai->ai_family == PF_UNSPEC)
454 pai->ai_family = afd->a_af;
456 if (!MATCH_FAMILY(pai->ai_family, ex->e_af, WILD_AF(ex)))
458 if (!MATCH(pai->ai_socktype, ex->e_socktype,
459 WILD_SOCKTYPE(ex))) {
462 if (!MATCH(pai->ai_protocol, ex->e_protocol,
463 WILD_PROTOCOL(ex))) {
467 if (pai->ai_family == PF_UNSPEC)
468 pai->ai_family = ex->e_af;
469 if (pai->ai_socktype == ANY && ex->e_socktype != ANY)
470 pai->ai_socktype = ex->e_socktype;
471 if (pai->ai_protocol == ANY && ex->e_protocol != ANY)
472 pai->ai_protocol = ex->e_protocol;
474 error = explore_fqdn(pai, hostname, servname,
477 while (cur && cur->ai_next)
483 if (sentinel.ai_next)
489 if (sentinel.ai_next) {
491 *res = sentinel.ai_next;
498 if (sentinel.ai_next)
499 freeaddrinfo(sentinel.ai_next);
505 * FQDN hostname, DNS lookup
508 explore_fqdn(pai, hostname, servname, res)
509 const struct addrinfo *pai;
510 const char *hostname;
511 const char *servname;
512 struct addrinfo **res;
517 char **aplist = NULL, *apbuf = NULL;
519 struct addrinfo sentinel, *cur;
521 #ifndef USE_GETIPNODEBY
524 const struct afd *afd;
528 sentinel.ai_next = NULL;
532 * Do not filter unsupported AFs here. We need to honor content of
533 * databases (/etc/hosts, DNS and others). Otherwise we cannot
534 * replace gethostbyname() by getaddrinfo().
538 * if the servname does not match socktype/protocol, ignore it.
540 if (get_portmatch(pai, servname) != 0)
543 afd = find_afd(pai->ai_family);
546 * post-RFC2553: should look at (pai->ai_flags & AI_ADDRCONFIG)
547 * rather than hardcoding it. we may need to add AI_ADDRCONFIG
548 * handling code by ourselves in case we don't have getipnodebyname().
550 #ifdef USE_GETIPNODEBY
551 hp = getipnodebyname(hostname, pai->ai_family, AI_ADDRCONFIG, &h_error);
553 #ifdef HAVE_GETHOSTBYNAME2
554 hp = gethostbyname2(hostname, pai->ai_family);
556 if (pai->ai_family != AF_INET)
558 hp = gethostbyname(hostname);
564 #endif /*HAVE_GETHOSTBYNAME2*/
565 #endif /*USE_GETIPNODEBY*/
582 } else if ((hp->h_name == NULL) || (hp->h_name[0] == 0)
583 || (hp->h_addr_list[0] == NULL)) {
584 #ifdef USE_GETIPNODEBY
594 #ifdef USE_GETIPNODEBY
595 aplist = hp->h_addr_list;
598 * hp will be overwritten if we use gethostbyname2().
599 * always deep copy for simplification.
601 for (naddrs = 0; hp->h_addr_list[naddrs] != NULL; naddrs++)
604 aplist = (char **)malloc(sizeof(aplist[0]) * naddrs);
605 apbuf = (char *)malloc(hp->h_length * naddrs);
606 if (aplist == NULL || apbuf == NULL) {
610 memset(aplist, 0, sizeof(aplist[0]) * naddrs);
611 for (i = 0; i < naddrs; i++) {
612 if (hp->h_addr_list[i] == NULL) {
616 memcpy(&apbuf[i * hp->h_length], hp->h_addr_list[i],
618 aplist[i] = &apbuf[i * hp->h_length];
622 for (i = 0; aplist[i] != NULL; i++) {
627 && IN6_IS_ADDR_V4MAPPED((struct in6_addr *)ap)) {
629 ap = ap + sizeof(struct in6_addr)
630 - sizeof(struct in_addr);
634 if (af != pai->ai_family)
637 if ((pai->ai_flags & AI_CANONNAME) == 0) {
638 GET_AI(cur->ai_next, afd, ap);
639 GET_PORT(cur->ai_next, servname);
642 * if AI_CANONNAME and if reverse lookup
643 * fail, return ai anyway to pacify
644 * calling application.
646 * XXX getaddrinfo() is a name->address
647 * translation function, and it looks
648 * strange that we do addr->name
651 get_name(ap, afd, &cur->ai_next,
655 while (cur && cur->ai_next)
659 *res = sentinel.ai_next;
663 #ifdef USE_GETIPNODEBY
671 if (sentinel.ai_next)
672 freeaddrinfo(sentinel.ai_next);
678 * passive socket -> anyaddr (0.0.0.0 or ::)
679 * non-passive socket -> localhost (127.0.0.1 or ::1)
682 explore_null(pai, hostname, servname, res)
683 const struct addrinfo *pai;
684 const char *hostname;
685 const char *servname;
686 struct addrinfo **res;
689 const struct afd *afd;
690 struct addrinfo *cur;
691 struct addrinfo sentinel;
695 sentinel.ai_next = NULL;
699 * filter out AFs that are not supported by the kernel
702 s = socket(pai->ai_family, SOCK_DGRAM, 0);
710 * if the servname does not match socktype/protocol, ignore it.
712 if (get_portmatch(pai, servname) != 0)
715 afd = find_afd(pai->ai_family);
717 if (pai->ai_flags & AI_PASSIVE) {
718 GET_AI(cur->ai_next, afd, afd->a_addrany);
720 * GET_CANONNAME(cur->ai_next, "anyaddr");
722 GET_PORT(cur->ai_next, servname);
724 GET_AI(cur->ai_next, afd, afd->a_loopback);
726 * GET_CANONNAME(cur->ai_next, "localhost");
728 GET_PORT(cur->ai_next, servname);
732 *res = sentinel.ai_next;
736 if (sentinel.ai_next)
737 freeaddrinfo(sentinel.ai_next);
745 explore_numeric(pai, hostname, servname, res)
746 const struct addrinfo *pai;
747 const char *hostname;
748 const char *servname;
749 struct addrinfo **res;
751 const struct afd *afd;
752 struct addrinfo *cur;
753 struct addrinfo sentinel;
759 sentinel.ai_next = NULL;
763 * if the servname does not match socktype/protocol, ignore it.
765 if (get_portmatch(pai, servname) != 0)
768 afd = find_afd(pai->ai_family);
769 flags = pai->ai_flags;
771 if (inet_pton(afd->a_af, hostname, pton) == 1) {
779 v4a = (u_int32_t)ntohl(((struct in_addr *)pton)->s_addr);
780 if (IN_MULTICAST(v4a) || IN_EXPERIMENTAL(v4a))
781 flags &= ~AI_CANONNAME;
782 v4a >>= IN_CLASSA_NSHIFT;
783 if (v4a == 0 || v4a == IN_LOOPBACKNET)
784 flags &= ~AI_CANONNAME;
788 pfx = ((struct in6_addr *)pton)->s6_addr[0];
789 if (pfx == 0 || pfx == 0xfe || pfx == 0xff)
790 flags &= ~AI_CANONNAME;
795 if (pai->ai_family == afd->a_af ||
796 pai->ai_family == PF_UNSPEC /*?*/) {
797 if ((flags & AI_CANONNAME) == 0) {
798 GET_AI(cur->ai_next, afd, pton);
799 GET_PORT(cur->ai_next, servname);
802 * if AI_CANONNAME and if reverse lookup
803 * fail, return ai anyway to pacify
804 * calling application.
806 * XXX getaddrinfo() is a name->address
807 * translation function, and it looks
808 * strange that we do addr->name
811 get_name(pton, afd, &cur->ai_next,
812 pton, pai, servname);
814 while (cur && cur->ai_next)
817 ERR(EAI_FAMILY); /*xxx*/
820 *res = sentinel.ai_next;
825 if (sentinel.ai_next)
826 freeaddrinfo(sentinel.ai_next);
831 * numeric hostname with scope
834 explore_numeric_scope(pai, hostname, servname, res)
835 const struct addrinfo *pai;
836 const char *hostname;
837 const char *servname;
838 struct addrinfo **res;
840 #ifndef SCOPE_DELIMITER
841 return explore_numeric(pai, hostname, servname, res);
843 const struct afd *afd;
844 struct addrinfo *cur;
846 char *cp, *hostname2 = NULL;
848 struct sockaddr_in6 *sin6;
851 * if the servname does not match socktype/protocol, ignore it.
853 if (get_portmatch(pai, servname) != 0)
856 afd = find_afd(pai->ai_family);
858 return explore_numeric(pai, hostname, servname, res);
860 cp = strchr(hostname, SCOPE_DELIMITER);
862 return explore_numeric(pai, hostname, servname, res);
865 * Handle special case of <scoped_address><delimiter><scope id>
867 hostname2 = strdup(hostname);
868 if (hostname2 == NULL)
870 /* terminate at the delimiter */
871 hostname2[cp - hostname] = '\0';
874 switch (pai->ai_family) {
877 scope = if_nametoindex(cp);
886 error = explore_numeric(pai, hostname2, servname, res);
888 for (cur = *res; cur; cur = cur->ai_next) {
889 if (cur->ai_family != AF_INET6)
891 sin6 = (struct sockaddr_in6 *)cur->ai_addr;
892 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) ||
893 IN6_IS_ADDR_MC_LINKLOCAL(&sin6->sin6_addr))
894 sin6->sin6_scope_id = scope;
905 get_name(addr, afd, res, numaddr, pai, servname)
907 const struct afd *afd;
908 struct addrinfo **res;
910 const struct addrinfo *pai;
911 const char *servname;
913 struct hostent *hp = NULL;
914 struct addrinfo *cur = NULL;
916 char *ap = NULL, *cn = NULL;
917 #ifdef USE_GETIPNODEBY
920 hp = getipnodebyaddr(addr, afd->a_addrlen, afd->a_af, &h_error);
922 hp = gethostbyaddr(addr, afd->a_addrlen, afd->a_af);
924 if (hp && hp->h_name && hp->h_name[0] && hp->h_addr_list[0]) {
925 #ifdef USE_GETIPNODEBY
926 GET_AI(cur, afd, hp->h_addr_list[0]);
927 GET_PORT(cur, servname);
928 GET_CANONNAME(cur, hp->h_name);
930 /* hp will be damaged if we use gethostbyaddr() */
931 if ((ap = (char *)malloc(hp->h_length)) == NULL) {
935 memcpy(ap, hp->h_addr_list[0], hp->h_length);
936 if ((cn = strdup(hp->h_name)) == NULL) {
941 GET_AI(cur, afd, ap);
942 GET_PORT(cur, servname);
943 GET_CANONNAME(cur, cn);
948 GET_AI(cur, afd, numaddr);
949 GET_PORT(cur, servname);
952 #ifdef USE_GETIPNODEBY
965 #ifdef USE_GETIPNODEBY
974 get_canonname(pai, ai, str)
975 const struct addrinfo *pai;
979 if ((pai->ai_flags & AI_CANONNAME) != 0) {
980 ai->ai_canonname = (char *)malloc(strlen(str) + 1);
981 if (ai->ai_canonname == NULL)
983 strcpy(ai->ai_canonname, str);
988 static struct addrinfo *
989 get_ai(pai, afd, addr)
990 const struct addrinfo *pai;
991 const struct afd *afd;
997 ai = (struct addrinfo *)malloc(sizeof(struct addrinfo)
1002 memcpy(ai, pai, sizeof(struct addrinfo));
1003 ai->ai_addr = (struct sockaddr *)(ai + 1);
1004 memset(ai->ai_addr, 0, afd->a_socklen);
1005 #ifdef HAVE_SOCKADDR_SA_LEN
1006 ai->ai_addr->sa_len = afd->a_socklen;
1008 ai->ai_addrlen = afd->a_socklen;
1009 ai->ai_addr->sa_family = ai->ai_family = afd->a_af;
1010 p = (char *)(ai->ai_addr);
1011 memcpy(p + afd->a_off, addr, afd->a_addrlen);
1016 get_portmatch(ai, servname)
1017 const struct addrinfo *ai;
1018 const char *servname;
1021 /* get_port does not touch first argument. when matchonly == 1. */
1022 return get_port((struct addrinfo *)ai, servname, 1);
1026 get_port(ai, servname, matchonly)
1027 struct addrinfo *ai;
1028 const char *servname;
1036 if (servname == NULL)
1038 switch (ai->ai_family) {
1048 switch (ai->ai_socktype) {
1059 return EAI_SOCKTYPE;
1062 if (str_isnumber(servname)) {
1065 port = htons(atoi(servname));
1066 if (port < 0 || port > 65535)
1069 switch (ai->ai_socktype) {
1081 if ((sp = getservbyname(servname, proto)) == NULL)
1087 switch (ai->ai_family) {
1089 ((struct sockaddr_in *)ai->ai_addr)->sin_port = port;
1093 ((struct sockaddr_in6 *)ai->ai_addr)->sin6_port = port;
1102 static const struct afd *
1106 const struct afd *afd;
1108 if (af == PF_UNSPEC)
1110 for (afd = afdl; afd->a_af; afd++) {
1111 if (afd->a_af == af)