2 * Copyright 2016-2021 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
15 * VC configurations may define UNICODE, to indicate to the C RTL that
16 * WCHAR functions are preferred.
17 * This affects functions like gai_strerror(), which is implemented as
18 * an alias macro for gai_strerrorA() (which returns a const char *) or
19 * gai_strerrorW() (which returns a const WCHAR *). This source file
20 * assumes POSIX declarations, so prefer the non-UNICODE definitions.
27 #include "bio_local.h"
28 #include <openssl/crypto.h>
30 #ifndef OPENSSL_NO_SOCK
31 #include <openssl/err.h>
32 #include <openssl/buffer.h>
33 #include "internal/thread_once.h"
35 CRYPTO_RWLOCK
*bio_lookup_lock
;
36 static CRYPTO_ONCE bio_lookup_init
= CRYPTO_ONCE_STATIC_INIT
;
39 * Throughout this file and bio_local.h, the existence of the macro
40 * AI_PASSIVE is used to detect the availability of struct addrinfo,
41 * getnameinfo() and getaddrinfo(). If that macro doesn't exist,
42 * we use our own implementation instead, using gethostbyname,
43 * getservbyname and a few other.
46 /**********************************************************************
52 BIO_ADDR
*BIO_ADDR_new(void)
54 BIO_ADDR
*ret
= OPENSSL_zalloc(sizeof(*ret
));
57 ERR_raise(ERR_LIB_BIO
, ERR_R_MALLOC_FAILURE
);
61 ret
->sa
.sa_family
= AF_UNSPEC
;
65 void BIO_ADDR_free(BIO_ADDR
*ap
)
70 void BIO_ADDR_clear(BIO_ADDR
*ap
)
72 memset(ap
, 0, sizeof(*ap
));
73 ap
->sa
.sa_family
= AF_UNSPEC
;
77 * BIO_ADDR_make - non-public routine to fill a BIO_ADDR with the contents
78 * of a struct sockaddr.
80 int BIO_ADDR_make(BIO_ADDR
*ap
, const struct sockaddr
*sa
)
82 if (sa
->sa_family
== AF_INET
) {
83 memcpy(&(ap
->s_in
), sa
, sizeof(struct sockaddr_in
));
87 if (sa
->sa_family
== AF_INET6
) {
88 memcpy(&(ap
->s_in6
), sa
, sizeof(struct sockaddr_in6
));
93 if (sa
->sa_family
== AF_UNIX
) {
94 memcpy(&(ap
->s_un
), sa
, sizeof(struct sockaddr_un
));
102 int BIO_ADDR_rawmake(BIO_ADDR
*ap
, int family
,
103 const void *where
, size_t wherelen
,
107 if (family
== AF_UNIX
) {
108 if (wherelen
+ 1 > sizeof(ap
->s_un
.sun_path
))
110 memset(&ap
->s_un
, 0, sizeof(ap
->s_un
));
111 ap
->s_un
.sun_family
= family
;
112 strncpy(ap
->s_un
.sun_path
, where
, sizeof(ap
->s_un
.sun_path
) - 1);
116 if (family
== AF_INET
) {
117 if (wherelen
!= sizeof(struct in_addr
))
119 memset(&ap
->s_in
, 0, sizeof(ap
->s_in
));
120 ap
->s_in
.sin_family
= family
;
121 ap
->s_in
.sin_port
= port
;
122 ap
->s_in
.sin_addr
= *(struct in_addr
*)where
;
126 if (family
== AF_INET6
) {
127 if (wherelen
!= sizeof(struct in6_addr
))
129 memset(&ap
->s_in6
, 0, sizeof(ap
->s_in6
));
130 ap
->s_in6
.sin6_family
= family
;
131 ap
->s_in6
.sin6_port
= port
;
132 ap
->s_in6
.sin6_addr
= *(struct in6_addr
*)where
;
140 int BIO_ADDR_family(const BIO_ADDR
*ap
)
142 return ap
->sa
.sa_family
;
145 int BIO_ADDR_rawaddress(const BIO_ADDR
*ap
, void *p
, size_t *l
)
148 const void *addrptr
= NULL
;
150 if (ap
->sa
.sa_family
== AF_INET
) {
151 len
= sizeof(ap
->s_in
.sin_addr
);
152 addrptr
= &ap
->s_in
.sin_addr
;
155 else if (ap
->sa
.sa_family
== AF_INET6
) {
156 len
= sizeof(ap
->s_in6
.sin6_addr
);
157 addrptr
= &ap
->s_in6
.sin6_addr
;
161 else if (ap
->sa
.sa_family
== AF_UNIX
) {
162 len
= strlen(ap
->s_un
.sun_path
);
163 addrptr
= &ap
->s_un
.sun_path
;
171 memcpy(p
, addrptr
, len
);
179 unsigned short BIO_ADDR_rawport(const BIO_ADDR
*ap
)
181 if (ap
->sa
.sa_family
== AF_INET
)
182 return ap
->s_in
.sin_port
;
184 if (ap
->sa
.sa_family
== AF_INET6
)
185 return ap
->s_in6
.sin6_port
;
191 * addr_strings - helper function to get host and service names
192 * @ap: the BIO_ADDR that has the input info
193 * @numeric: 0 if actual names should be returned, 1 if the numeric
194 * representation should be returned.
195 * @hostname: a pointer to a pointer to a memory area to store the
196 * host name or numeric representation. Unused if NULL.
197 * @service: a pointer to a pointer to a memory area to store the
198 * service name or numeric representation. Unused if NULL.
200 * The return value is 0 on failure, with the error code in the error
201 * stack, and 1 on success.
203 static int addr_strings(const BIO_ADDR
*ap
, int numeric
,
204 char **hostname
, char **service
)
206 if (BIO_sock_init() != 1)
212 char host
[NI_MAXHOST
] = "", serv
[NI_MAXSERV
] = "";
216 flags
|= NI_NUMERICHOST
| NI_NUMERICSERV
;
218 if ((ret
= getnameinfo(BIO_ADDR_sockaddr(ap
),
219 BIO_ADDR_sockaddr_size(ap
),
220 host
, sizeof(host
), serv
, sizeof(serv
),
223 if (ret
== EAI_SYSTEM
) {
224 ERR_raise_data(ERR_LIB_SYS
, get_last_socket_error(),
225 "calling getnameinfo()");
229 ERR_raise_data(ERR_LIB_BIO
, ERR_R_SYS_LIB
, gai_strerror(ret
));
234 /* VMS getnameinfo() has a bug, it doesn't fill in serv, which
235 * leaves it with whatever garbage that happens to be there.
236 * However, we initialise serv with the empty string (serv[0]
237 * is therefore NUL), so it gets real easy to detect when things
238 * didn't go the way one might expect.
240 if (serv
[0] == '\0') {
241 BIO_snprintf(serv
, sizeof(serv
), "%d",
242 ntohs(BIO_ADDR_rawport(ap
)));
245 if (hostname
!= NULL
)
246 *hostname
= OPENSSL_strdup(host
);
248 *service
= OPENSSL_strdup(serv
);
251 if (hostname
!= NULL
)
252 *hostname
= OPENSSL_strdup(inet_ntoa(ap
->s_in
.sin_addr
));
253 if (service
!= NULL
) {
254 char serv
[6]; /* port is 16 bits => max 5 decimal digits */
255 BIO_snprintf(serv
, sizeof(serv
), "%d", ntohs(ap
->s_in
.sin_port
));
256 *service
= OPENSSL_strdup(serv
);
260 if ((hostname
!= NULL
&& *hostname
== NULL
)
261 || (service
!= NULL
&& *service
== NULL
)) {
262 if (hostname
!= NULL
) {
263 OPENSSL_free(*hostname
);
266 if (service
!= NULL
) {
267 OPENSSL_free(*service
);
270 ERR_raise(ERR_LIB_BIO
, ERR_R_MALLOC_FAILURE
);
277 char *BIO_ADDR_hostname_string(const BIO_ADDR
*ap
, int numeric
)
279 char *hostname
= NULL
;
281 if (addr_strings(ap
, numeric
, &hostname
, NULL
))
287 char *BIO_ADDR_service_string(const BIO_ADDR
*ap
, int numeric
)
289 char *service
= NULL
;
291 if (addr_strings(ap
, numeric
, NULL
, &service
))
297 char *BIO_ADDR_path_string(const BIO_ADDR
*ap
)
300 if (ap
->sa
.sa_family
== AF_UNIX
)
301 return OPENSSL_strdup(ap
->s_un
.sun_path
);
307 * BIO_ADDR_sockaddr - non-public routine to return the struct sockaddr
308 * for a given BIO_ADDR. In reality, this is simply a type safe cast.
309 * The returned struct sockaddr is const, so it can't be tampered with.
311 const struct sockaddr
*BIO_ADDR_sockaddr(const BIO_ADDR
*ap
)
317 * BIO_ADDR_sockaddr_noconst - non-public function that does the same
318 * as BIO_ADDR_sockaddr, but returns a non-const. USE WITH CARE, as
319 * it allows you to tamper with the data (and thereby the contents
320 * of the input BIO_ADDR).
322 struct sockaddr
*BIO_ADDR_sockaddr_noconst(BIO_ADDR
*ap
)
328 * BIO_ADDR_sockaddr_size - non-public function that returns the size
329 * of the struct sockaddr the BIO_ADDR is using. If the protocol family
330 * isn't set or is something other than AF_INET, AF_INET6 or AF_UNIX,
331 * the size of the BIO_ADDR type is returned.
333 socklen_t
BIO_ADDR_sockaddr_size(const BIO_ADDR
*ap
)
335 if (ap
->sa
.sa_family
== AF_INET
)
336 return sizeof(ap
->s_in
);
338 if (ap
->sa
.sa_family
== AF_INET6
)
339 return sizeof(ap
->s_in6
);
342 if (ap
->sa
.sa_family
== AF_UNIX
)
343 return sizeof(ap
->s_un
);
348 /**********************************************************************
350 * Address info database
354 const BIO_ADDRINFO
*BIO_ADDRINFO_next(const BIO_ADDRINFO
*bai
)
357 return bai
->bai_next
;
361 int BIO_ADDRINFO_family(const BIO_ADDRINFO
*bai
)
364 return bai
->bai_family
;
368 int BIO_ADDRINFO_socktype(const BIO_ADDRINFO
*bai
)
371 return bai
->bai_socktype
;
375 int BIO_ADDRINFO_protocol(const BIO_ADDRINFO
*bai
)
378 if (bai
->bai_protocol
!= 0)
379 return bai
->bai_protocol
;
382 if (bai
->bai_family
== AF_UNIX
)
386 switch (bai
->bai_socktype
) {
399 * BIO_ADDRINFO_sockaddr_size - non-public function that returns the size
400 * of the struct sockaddr inside the BIO_ADDRINFO.
402 socklen_t
BIO_ADDRINFO_sockaddr_size(const BIO_ADDRINFO
*bai
)
405 return bai
->bai_addrlen
;
410 * BIO_ADDRINFO_sockaddr - non-public function that returns bai_addr
411 * as the struct sockaddr it is.
413 const struct sockaddr
*BIO_ADDRINFO_sockaddr(const BIO_ADDRINFO
*bai
)
416 return bai
->bai_addr
;
420 const BIO_ADDR
*BIO_ADDRINFO_address(const BIO_ADDRINFO
*bai
)
423 return (BIO_ADDR
*)bai
->bai_addr
;
427 void BIO_ADDRINFO_free(BIO_ADDRINFO
*bai
)
434 # define _cond bai->bai_family != AF_UNIX
444 /* Free manually when we know that addrinfo_wrap() was used.
445 * See further comment above addrinfo_wrap()
447 while (bai
!= NULL
) {
448 BIO_ADDRINFO
*next
= bai
->bai_next
;
449 OPENSSL_free(bai
->bai_addr
);
455 /**********************************************************************
462 * The specs in hostserv can take these forms:
464 * host:service => *host = "host", *service = "service"
465 * host:* => *host = "host", *service = NULL
466 * host: => *host = "host", *service = NULL
467 * :service => *host = NULL, *service = "service"
468 * *:service => *host = NULL, *service = "service"
470 * in case no : is present in the string, the result depends on
471 * hostserv_prio, as follows:
473 * when hostserv_prio == BIO_PARSE_PRIO_HOST
474 * host => *host = "host", *service untouched
476 * when hostserv_prio == BIO_PARSE_PRIO_SERV
477 * service => *host untouched, *service = "service"
480 int BIO_parse_hostserv(const char *hostserv
, char **host
, char **service
,
481 enum BIO_hostserv_priorities hostserv_prio
)
483 const char *h
= NULL
; size_t hl
= 0;
484 const char *p
= NULL
; size_t pl
= 0;
486 if (*hostserv
== '[') {
487 if ((p
= strchr(hostserv
, ']')) == NULL
)
501 const char *p2
= strrchr(hostserv
, ':');
502 p
= strchr(hostserv
, ':');
505 * Check for more than one colon. There are three possible
507 * 1. IPv6 address with port number, last colon being separator.
508 * 2. IPv6 address only.
509 * 3. IPv6 address only if hostserv_prio == BIO_PARSE_PRIO_HOST,
510 * IPv6 address and port number if hostserv_prio == BIO_PARSE_PRIO_SERV
511 * Because of this ambiguity, we currently choose to make it an
522 } else if (hostserv_prio
== BIO_PARSE_PRIO_HOST
) {
531 if (p
!= NULL
&& strchr(p
, ':'))
534 if (h
!= NULL
&& host
!= NULL
) {
536 || (hl
== 1 && h
[0] == '*')) {
539 *host
= OPENSSL_strndup(h
, hl
);
544 if (p
!= NULL
&& service
!= NULL
) {
546 || (pl
== 1 && p
[0] == '*')) {
549 *service
= OPENSSL_strndup(p
, pl
);
550 if (*service
== NULL
)
557 ERR_raise(ERR_LIB_BIO
, BIO_R_AMBIGUOUS_HOST_OR_SERVICE
);
560 ERR_raise(ERR_LIB_BIO
, BIO_R_MALFORMED_HOST_OR_SERVICE
);
563 ERR_raise(ERR_LIB_BIO
, ERR_R_MALLOC_FAILURE
);
567 /* addrinfo_wrap is used to build our own addrinfo "chain".
568 * (it has only one entry, so calling it a chain may be a stretch)
569 * It should ONLY be called when getaddrinfo() and friends
570 * aren't available, OR when dealing with a non IP protocol
571 * family, such as AF_UNIX
573 * the return value is 1 on success, or 0 on failure, which
574 * only happens if a memory allocation error occurred.
576 static int addrinfo_wrap(int family
, int socktype
,
577 const void *where
, size_t wherelen
,
581 if ((*bai
= OPENSSL_zalloc(sizeof(**bai
))) == NULL
) {
582 ERR_raise(ERR_LIB_BIO
, ERR_R_MALLOC_FAILURE
);
586 (*bai
)->bai_family
= family
;
587 (*bai
)->bai_socktype
= socktype
;
588 if (socktype
== SOCK_STREAM
)
589 (*bai
)->bai_protocol
= IPPROTO_TCP
;
590 if (socktype
== SOCK_DGRAM
)
591 (*bai
)->bai_protocol
= IPPROTO_UDP
;
593 if (family
== AF_UNIX
)
594 (*bai
)->bai_protocol
= 0;
597 /* Magic: We know that BIO_ADDR_sockaddr_noconst is really
598 just an advanced cast of BIO_ADDR* to struct sockaddr *
599 by the power of union, so while it may seem that we're
600 creating a memory leak here, we are not. It will be
602 BIO_ADDR
*addr
= BIO_ADDR_new();
604 BIO_ADDR_rawmake(addr
, family
, where
, wherelen
, port
);
605 (*bai
)->bai_addr
= BIO_ADDR_sockaddr_noconst(addr
);
608 (*bai
)->bai_next
= NULL
;
609 if ((*bai
)->bai_addr
== NULL
) {
610 BIO_ADDRINFO_free(*bai
);
617 DEFINE_RUN_ONCE_STATIC(do_bio_lookup_init
)
619 bio_lookup_lock
= CRYPTO_THREAD_lock_new();
620 return bio_lookup_lock
!= NULL
;
623 int BIO_lookup(const char *host
, const char *service
,
624 enum BIO_lookup_type lookup_type
,
625 int family
, int socktype
, BIO_ADDRINFO
**res
)
627 return BIO_lookup_ex(host
, service
, lookup_type
, family
, socktype
, 0, res
);
631 * BIO_lookup_ex - look up the host and service you want to connect to.
632 * @host: the host (or node, in case family == AF_UNIX) you want to connect to.
633 * @service: the service you want to connect to.
634 * @lookup_type: declare intent with the result, client or server.
635 * @family: the address family you want to use. Use AF_UNSPEC for any, or
636 * AF_INET, AF_INET6 or AF_UNIX.
637 * @socktype: The socket type you want to use. Can be SOCK_STREAM, SOCK_DGRAM
639 * @protocol: The protocol to use, e.g. IPPROTO_TCP or IPPROTO_UDP or 0 for all.
640 * Note that some platforms may not return IPPROTO_SCTP without
641 * explicitly requesting it (i.e. IPPROTO_SCTP may not be returned
642 * with 0 for the protocol)
643 * @res: Storage place for the resulting list of returned addresses
645 * This will do a lookup of the host and service that you want to connect to.
646 * It returns a linked list of different addresses you can try to connect to.
648 * When no longer needed you should call BIO_ADDRINFO_free() to free the result.
650 * The return value is 1 on success or 0 in case of error.
652 int BIO_lookup_ex(const char *host
, const char *service
, int lookup_type
,
653 int family
, int socktype
, int protocol
, BIO_ADDRINFO
**res
)
655 int ret
= 0; /* Assume failure */
670 ERR_raise(ERR_LIB_BIO
, BIO_R_UNSUPPORTED_PROTOCOL_FAMILY
);
675 if (family
== AF_UNIX
) {
676 if (addrinfo_wrap(family
, socktype
, host
, strlen(host
), 0, res
))
679 ERR_raise(ERR_LIB_BIO
, ERR_R_MALLOC_FAILURE
);
684 if (BIO_sock_init() != 1)
689 int gai_ret
= 0, old_ret
= 0;
690 struct addrinfo hints
;
692 memset(&hints
, 0, sizeof(hints
));
694 hints
.ai_family
= family
;
695 hints
.ai_socktype
= socktype
;
696 hints
.ai_protocol
= protocol
;
697 # ifdef AI_ADDRCONFIG
699 if (host
!= NULL
&& family
== AF_UNSPEC
)
701 hints
.ai_flags
|= AI_ADDRCONFIG
;
704 if (lookup_type
== BIO_LOOKUP_SERVER
)
705 hints
.ai_flags
|= AI_PASSIVE
;
707 /* Note that |res| SHOULD be a 'struct addrinfo **' thanks to
708 * macro magic in bio_local.h
710 # if defined(AI_ADDRCONFIG) && defined(AI_NUMERICHOST)
713 switch ((gai_ret
= getaddrinfo(host
, service
, &hints
, res
))) {
716 ERR_raise_data(ERR_LIB_SYS
, get_last_socket_error(),
717 "calling getaddrinfo()");
718 ERR_raise(ERR_LIB_BIO
, ERR_R_SYS_LIB
);
723 ERR_raise(ERR_LIB_BIO
, ERR_R_MALLOC_FAILURE
);
727 ret
= 1; /* Success */
730 # if defined(AI_ADDRCONFIG) && defined(AI_NUMERICHOST)
731 if (hints
.ai_flags
& AI_ADDRCONFIG
) {
732 hints
.ai_flags
&= ~AI_ADDRCONFIG
;
733 hints
.ai_flags
|= AI_NUMERICHOST
;
738 ERR_raise_data(ERR_LIB_BIO
, ERR_R_SYS_LIB
,
739 gai_strerror(old_ret
? old_ret
: gai_ret
));
744 const struct hostent
*he
;
746 * Because struct hostent is defined for 32-bit pointers only with
747 * VMS C, we need to make sure that '&he_fallback_address' and
748 * '&he_fallback_addresses' are 32-bit pointers
750 #if defined(OPENSSL_SYS_VMS) && defined(__DECC)
751 # pragma pointer_size save
752 # pragma pointer_size 32
754 /* Windows doesn't seem to have in_addr_t */
755 #ifdef OPENSSL_SYS_WINDOWS
756 static uint32_t he_fallback_address
;
757 static const char *he_fallback_addresses
[] =
758 { (char *)&he_fallback_address
, NULL
};
760 static in_addr_t he_fallback_address
;
761 static const char *he_fallback_addresses
[] =
762 { (char *)&he_fallback_address
, NULL
};
764 static const struct hostent he_fallback
=
765 { NULL
, NULL
, AF_INET
, sizeof(he_fallback_address
),
766 (char **)&he_fallback_addresses
};
767 #if defined(OPENSSL_SYS_VMS) && defined(__DECC)
768 # pragma pointer_size restore
772 /* Apparently, on WIN64, s_proto and s_port have traded places... */
774 struct servent se_fallback
= { NULL
, NULL
, NULL
, 0 };
776 struct servent se_fallback
= { NULL
, NULL
, 0, NULL
};
779 if (!RUN_ONCE(&bio_lookup_init
, do_bio_lookup_init
)) {
780 ERR_raise(ERR_LIB_BIO
, ERR_R_MALLOC_FAILURE
);
785 if (!CRYPTO_THREAD_write_lock(bio_lookup_lock
)) {
789 he_fallback_address
= INADDR_ANY
;
792 switch (lookup_type
) {
793 case BIO_LOOKUP_CLIENT
:
794 he_fallback_address
= INADDR_LOOPBACK
;
796 case BIO_LOOKUP_SERVER
:
797 he_fallback_address
= INADDR_ANY
;
800 /* We forgot to handle a lookup type! */
801 assert("We forgot to handle a lookup type!" == NULL
);
802 ERR_raise(ERR_LIB_BIO
, ERR_R_INTERNAL_ERROR
);
807 he
= gethostbyname(host
);
810 #ifndef OPENSSL_SYS_WINDOWS
812 * This might be misleading, because h_errno is used as if
813 * it was errno. To minimize mixup add 1000. Underlying
814 * reason for this is that hstrerror is declared obsolete,
815 * not to mention that a) h_errno is not always guaranteed
816 * to be meaningless; b) hstrerror can reside in yet another
817 * library, linking for sake of hstrerror is an overkill;
818 * c) this path is not executed on contemporary systems
819 * anyway [above getaddrinfo/gai_strerror is]. We just let
820 * system administrator figure this out...
822 # if defined(OPENSSL_SYS_VXWORKS)
823 /* h_errno doesn't exist on VxWorks */
824 ERR_raise_data(ERR_LIB_SYS
, 1000,
825 "calling gethostbyname()");
827 ERR_raise_data(ERR_LIB_SYS
, 1000 + h_errno
,
828 "calling gethostbyname()");
831 ERR_raise_data(ERR_LIB_SYS
, get_last_socket_error(),
832 "calling gethostbyname()");
839 if (service
== NULL
) {
840 se_fallback
.s_port
= 0;
841 se_fallback
.s_proto
= NULL
;
845 long portnum
= strtol(service
, &endp
, 10);
848 * Because struct servent is defined for 32-bit pointers only with
849 * VMS C, we need to make sure that 'proto' is a 32-bit pointer.
851 #if defined(OPENSSL_SYS_VMS) && defined(__DECC)
852 # pragma pointer_size save
853 # pragma pointer_size 32
856 #if defined(OPENSSL_SYS_VMS) && defined(__DECC)
857 # pragma pointer_size restore
869 if (endp
!= service
&& *endp
== '\0'
870 && portnum
> 0 && portnum
< 65536) {
871 se_fallback
.s_port
= htons((unsigned short)portnum
);
872 se_fallback
.s_proto
= proto
;
874 } else if (endp
== service
) {
875 se
= getservbyname(service
, proto
);
878 ERR_raise_data(ERR_LIB_SYS
, get_last_socket_error(),
879 "calling getservbyname()");
883 ERR_raise(ERR_LIB_BIO
, BIO_R_MALFORMED_HOST_OR_SERVICE
);
892 * Because hostent::h_addr_list is an array of 32-bit pointers with VMS C,
893 * we must make sure our iterator designates the same element type, hence
894 * the pointer size dance.
896 #if defined(OPENSSL_SYS_VMS) && defined(__DECC)
897 # pragma pointer_size save
898 # pragma pointer_size 32
901 #if defined(OPENSSL_SYS_VMS) && defined(__DECC)
902 # pragma pointer_size restore
905 BIO_ADDRINFO
*tmp_bai
= NULL
;
907 /* The easiest way to create a linked list from an
908 array is to start from the back */
909 for (addrlistp
= he
->h_addr_list
; *addrlistp
!= NULL
;
913 for (addresses
= addrlistp
- he
->h_addr_list
;
914 addrlistp
--, addresses
-- > 0; ) {
915 if (!addrinfo_wrap(he
->h_addrtype
, socktype
,
916 *addrlistp
, he
->h_length
,
917 se
->s_port
, &tmp_bai
))
918 goto addrinfo_malloc_err
;
919 tmp_bai
->bai_next
= *res
;
923 BIO_ADDRINFO_free(*res
);
925 ERR_raise(ERR_LIB_BIO
, ERR_R_MALLOC_FAILURE
);
933 CRYPTO_THREAD_unlock(bio_lookup_lock
);
939 #endif /* OPENSSL_NO_SOCK */