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openssl/crypto/bio/b_addr.c
Richard Levitte 6faffd0ad2 Better workaround for VMS getnameinfo() bug 
The actual bug with current getnameinfo() on VMS is not that it puts
gibberish in the service buffer, but that it doesn't touch it at all.
The gibberish we dealt with before was simply stuff that happened to
be on the stack.

It's better to initialise the service buffer properly (with the empty
string) and check if it's still an empty string after the
getnameinfo() call, and fill it with the direct numerical translation
of the raw port if that's the case.

Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-02-12 19:50:46 +01:00

850 lines
24 KiB
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/* ====================================================================
* Copyright (c) 2015 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* openssl-core@openssl.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
#include <string.h>
#include "bio_lcl.h"
#include <openssl/err.h>
#include <openssl/buffer.h>
#include <ctype.h>
/*
* Throughout this file and bio_lcl.h, the existence of the macro
* AI_PASSIVE is used to detect the availability of struct addrinfo,
* getnameinfo() and getaddrinfo(). If that macro doesn't exist,
* we use our own implementation instead, using gethostbyname,
* getservbyname and a few other.
*/
/**********************************************************************
*
* Address structure
*
*/
BIO_ADDR *BIO_ADDR_new(void)
{
BIO_ADDR *ret = OPENSSL_zalloc(sizeof(*ret));
ret->sa.sa_family = AF_UNSPEC;
return ret;
}
void BIO_ADDR_free(BIO_ADDR *ap)
{
OPENSSL_free(ap);
}
void BIO_ADDR_clear(BIO_ADDR *ap)
{
memset(ap, 0, sizeof(*ap));
ap->sa.sa_family = AF_UNSPEC;
}
/*
* BIO_ADDR_make - non-public routine to fill a BIO_ADDR with the contents
* of a struct sockaddr.
*/
int BIO_ADDR_make(BIO_ADDR *ap, const struct sockaddr *sa)
{
if (sa->sa_family == AF_INET) {
ap->sin = *(const struct sockaddr_in *)sa;
return 1;
}
#ifdef AF_INET6
if (sa->sa_family == AF_INET6) {
ap->sin6 = *(const struct sockaddr_in6 *)sa;
return 1;
}
#endif
#ifdef AF_UNIX
if (ap->sa.sa_family == AF_UNIX) {
ap->sun = *(const struct sockaddr_un *)sa;
return 1;
}
#endif
return 0;
}
int BIO_ADDR_rawmake(BIO_ADDR *ap, int family,
const void *where, size_t wherelen,
unsigned short port)
{
#ifdef AF_UNIX
if (family == AF_UNIX) {
if (wherelen + 1 > sizeof(ap->sun.sun_path))
return 0;
memset(&ap->sun, 0, sizeof(ap->sun));
ap->sun.sun_family = family;
strncpy(ap->sun.sun_path, where, sizeof(ap->sun.sun_path) - 1);
return 1;
}
#endif
if (family == AF_INET) {
if (wherelen != sizeof(struct in_addr))
return 0;
memset(&ap->sin, 0, sizeof(ap->sin));
ap->sin.sin_family = family;
ap->sin.sin_port = port;
ap->sin.sin_addr = *(struct in_addr *)where;
return 1;
}
#ifdef AF_INET6
if (family == AF_INET6) {
if (wherelen != sizeof(struct in6_addr))
return 0;
memset(&ap->sin6, 0, sizeof(ap->sin6));
ap->sin6.sin6_family = family;
ap->sin6.sin6_port = port;
ap->sin6.sin6_addr = *(struct in6_addr *)where;
return 1;
}
#endif
return 0;
}
int BIO_ADDR_family(const BIO_ADDR *ap)
{
return ap->sa.sa_family;
}
int BIO_ADDR_rawaddress(const BIO_ADDR *ap, void *p, size_t *l)
{
size_t len = 0;
const void *addrptr = NULL;
if (ap->sa.sa_family == AF_INET) {
len = sizeof(ap->sin.sin_addr);
addrptr = &ap->sin.sin_addr;
}
#ifdef AF_INET6
else if (ap->sa.sa_family == AF_INET6) {
len = sizeof(ap->sin6.sin6_addr);
addrptr = &ap->sin6.sin6_addr;
}
#endif
#ifdef AF_UNIX
else if (ap->sa.sa_family == AF_UNIX) {
len = strlen(ap->sun.sun_path);
addrptr = &ap->sun.sun_path;
}
#endif
if (addrptr == NULL)
return 0;
if (p != NULL) {
memcpy(p, addrptr, len);
}
if (l != NULL)
*l = len;
return 1;
}
unsigned short BIO_ADDR_rawport(const BIO_ADDR *ap)
{
if (ap->sa.sa_family == AF_INET)
return ap->sin.sin_port;
#ifdef AF_INET6
if (ap->sa.sa_family == AF_INET6)
return ap->sin6.sin6_port;
#endif
return 0;
}
/*-
* addr_strings - helper function to get host and service names
* @ap: the BIO_ADDR that has the input info
* @numeric: 0 if actual names should be returned, 1 if the numeric
* representation should be returned.
* @hostname: a pointer to a pointer to a memory area to store the
* host name or numeric representation. Unused if NULL.
* @service: a pointer to a pointer to a memory area to store the
* service name or numeric representation. Unused if NULL.
*
* The return value is 0 on failure, with the error code in the error
* stack, and 1 on success.
*/
static int addr_strings(const BIO_ADDR *ap, int numeric,
char **hostname, char **service)
{
if (BIO_sock_init() != 1)
return 0;
if (1) {
#ifdef AI_PASSIVE
int ret = 0;
char host[NI_MAXHOST] = "", serv[NI_MAXSERV] = "";
int flags = 0;
if (numeric)
flags |= NI_NUMERICHOST | NI_NUMERICSERV;
if ((ret = getnameinfo(BIO_ADDR_sockaddr(ap),
BIO_ADDR_sockaddr_size(ap),
host, sizeof(host), serv, sizeof(serv),
flags)) != 0) {
# ifdef EAI_SYSTEM
if (ret == EAI_SYSTEM) {
SYSerr(SYS_F_GETNAMEINFO, get_last_socket_error());
BIOerr(BIO_F_ADDR_STRINGS, ERR_R_SYS_LIB);
} else
# endif
{
BIOerr(BIO_F_ADDR_STRINGS, ERR_R_SYS_LIB);
ERR_add_error_data(1, gai_strerror(ret));
}
return 0;
}
/* VMS getnameinfo() has a bug, it doesn't fill in serv, which
* leaves it with whatever garbage that happens to be there.
* However, we initialise serv with the empty string (serv[0]
* is therefore NUL), so it gets real easy to detect when things
* didn't go the way one might expect.
*/
if (serv[0] == '\0') {
BIO_snprintf(serv, sizeof(serv), "%d",
ntohs(BIO_ADDR_rawport(ap)));
}
if (hostname)
*hostname = OPENSSL_strdup(host);
if (service)
*service = OPENSSL_strdup(serv);
} else {
#endif
if (hostname)
*hostname = OPENSSL_strdup(inet_ntoa(ap->sin.sin_addr));
if (service) {
char serv[6]; /* port is 16 bits => max 5 decimal digits */
BIO_snprintf(serv, sizeof(serv), "%d", ntohs(ap->sin.sin_port));
*service = OPENSSL_strdup(serv);
}
}
return 1;
}
char *BIO_ADDR_hostname_string(const BIO_ADDR *ap, int numeric)
{
char *hostname = NULL;
if (addr_strings(ap, numeric, &hostname, NULL))
return hostname;
return NULL;
}
char *BIO_ADDR_service_string(const BIO_ADDR *ap, int numeric)
{
char *service = NULL;
if (addr_strings(ap, numeric, NULL, &service))
return service;
return NULL;
}
char *BIO_ADDR_path_string(const BIO_ADDR *ap)
{
#ifdef AF_UNIX
if (ap->sa.sa_family == AF_UNIX)
return OPENSSL_strdup(ap->sun.sun_path);
#endif
return NULL;
}
/*
* BIO_ADDR_sockaddr - non-public routine to return the struct sockaddr
* for a given BIO_ADDR. In reality, this is simply a type safe cast.
* The returned struct sockaddr is const, so it can't be tampered with.
*/
const struct sockaddr *BIO_ADDR_sockaddr(const BIO_ADDR *ap)
{
return &(ap->sa);
}
/*
* BIO_ADDR_sockaddr_noconst - non-public function that does the same
* as BIO_ADDR_sockaddr, but returns a non-const. USE WITH CARE, as
* it allows you to tamper with the data (and thereby the contents
* of the input BIO_ADDR).
*/
struct sockaddr *BIO_ADDR_sockaddr_noconst(BIO_ADDR *ap)
{
return &(ap->sa);
}
/*
* BIO_ADDR_sockaddr_size - non-public function that returns the size
* of the struct sockaddr the BIO_ADDR is using. If the protocol family
* isn't set or is something other than AF_INET, AF_INET6 or AF_UNIX,
* the size of the BIO_ADDR type is returned.
*/
socklen_t BIO_ADDR_sockaddr_size(const BIO_ADDR *ap)
{
if (ap->sa.sa_family == AF_INET)
return sizeof(ap->sin);
#ifdef AF_INET6
if (ap->sa.sa_family == AF_INET6)
return sizeof(ap->sin6);
#endif
#ifdef AF_UNIX
if (ap->sa.sa_family == AF_UNIX)
return sizeof(ap->sun);
#endif
return sizeof(*ap);
}
/**********************************************************************
*
* Address info database
*
*/
const BIO_ADDRINFO *BIO_ADDRINFO_next(const BIO_ADDRINFO *bai)
{
if (bai != NULL)
return bai->bai_next;
return NULL;
}
int BIO_ADDRINFO_family(const BIO_ADDRINFO *bai)
{
if (bai != NULL)
return bai->bai_family;
return 0;
}
int BIO_ADDRINFO_socktype(const BIO_ADDRINFO *bai)
{
if (bai != NULL)
return bai->bai_socktype;
return 0;
}
int BIO_ADDRINFO_protocol(const BIO_ADDRINFO *bai)
{
if (bai != NULL) {
if (bai->bai_protocol != 0)
return bai->bai_protocol;
#ifdef AF_UNIX
if (bai->bai_family == AF_UNIX)
return 0;
#endif
switch (bai->bai_socktype) {
case SOCK_STREAM:
return IPPROTO_TCP;
case SOCK_DGRAM:
return IPPROTO_UDP;
default:
break;
}
}
return 0;
}
/*
* BIO_ADDRINFO_sockaddr_size - non-public function that returns the size
* of the struct sockaddr inside the BIO_ADDRINFO.
*/
socklen_t BIO_ADDRINFO_sockaddr_size(const BIO_ADDRINFO *bai)
{
if (bai != NULL)
return bai->bai_addrlen;
return 0;
}
/*
* BIO_ADDRINFO_sockaddr - non-public function that returns bai_addr
* as the struct sockaddr it is.
*/
const struct sockaddr *BIO_ADDRINFO_sockaddr(const BIO_ADDRINFO *bai)
{
if (bai != NULL)
return bai->bai_addr;
return NULL;
}
const BIO_ADDR *BIO_ADDRINFO_address(const BIO_ADDRINFO *bai)
{
if (bai != NULL)
return (BIO_ADDR *)bai->bai_addr;
return NULL;
}
void BIO_ADDRINFO_free(BIO_ADDRINFO *bai)
{
if (bai == NULL)
return;
#ifdef AI_PASSIVE
# ifdef AF_UNIX
# define _cond bai->bai_family != AF_UNIX
# else
# define _cond 1
# endif
if (_cond) {
freeaddrinfo(bai);
return;
}
#endif
/* Free manually when we know that addrinfo_wrap() was used.
* See further comment above addrinfo_wrap()
*/
while (bai != NULL) {
BIO_ADDRINFO *next = bai->bai_next;
OPENSSL_free(bai->bai_addr);
OPENSSL_free(bai);
bai = next;
}
}
/**********************************************************************
*
* Service functions
*
*/
/*-
* The specs in hostserv can take these forms:
*
* host:service => *host = "host", *service = "service"
* host:* => *host = "host", *service = NULL
* host: => *host = "host", *service = NULL
* :service => *host = NULL, *service = "service"
* *:service => *host = NULL, *service = "service"
*
* in case no : is present in the string, the result depends on
* hostserv_prio, as follows:
*
* when hostserv_prio == BIO_PARSE_PRIO_HOST
* host => *host = "host", *service untouched
*
* when hostserv_prio == BIO_PARSE_PRIO_SERV
* service => *host untouched, *service = "service"
*
*/
int BIO_parse_hostserv(const char *hostserv, char **host, char **service,
enum BIO_hostserv_priorities hostserv_prio)
{
const char *h = NULL; size_t hl = 0;
const char *p = NULL; size_t pl = 0;
if (*hostserv == '[') {
if ((p = strchr(hostserv, ']')) == NULL)
goto spec_err;
h = hostserv + 1;
hl = p - h;
p++;
if (*p == '\0')
p = NULL;
else if (*p != ':')
goto spec_err;
else {
p++;
pl = strlen(p);
}
} else {
const char *p2 = strrchr(hostserv, ':');
p = strchr(hostserv, ':');
/*-
* Check for more than one colon. There are three possible
* interpretations:
* 1. IPv6 address with port number, last colon being separator.
* 2. IPv6 address only.
* 3. IPv6 address only if hostserv_prio == BIO_PARSE_PRIO_HOST,
* IPv6 address and port number if hostserv_prio == BIO_PARSE_PRIO_SERV
* Because of this ambiguity, we currently choose to make it an
* error.
*/
if (p != p2)
goto amb_err;
if (p != NULL) {
h = hostserv;
hl = p - h;
p++;
pl = strlen(p);
} else if (hostserv_prio == BIO_PARSE_PRIO_HOST) {
h = hostserv;
hl = strlen(h);
} else {
p = hostserv;
pl = strlen(p);
}
}
if (p != NULL && strchr(p, ':'))
goto spec_err;
if (h != NULL && host != NULL) {
if (hl == 0
|| (hl == 1 && h[0] == '*')) {
*host = NULL;
} else {
*host = OPENSSL_strndup(h, hl);
if (*host == NULL)
goto memerr;
}
}
if (p != NULL && service != NULL) {
if (pl == 0
|| (pl == 1 && p[0] == '*')) {
*service = NULL;
} else {
*service = OPENSSL_strndup(p, pl);
if (*service == NULL)
goto memerr;
}
}
return 1;
amb_err:
BIOerr(BIO_F_BIO_PARSE_HOSTSERV, BIO_R_AMBIGUOUS_HOST_OR_SERVICE);
return 0;
spec_err:
BIOerr(BIO_F_BIO_PARSE_HOSTSERV, BIO_R_MALFORMED_HOST_OR_SERVICE);
return 0;
memerr:
BIOerr(BIO_F_BIO_PARSE_HOSTSERV, ERR_R_MALLOC_FAILURE);
return 0;
}
/* addrinfo_wrap is used to build our own addrinfo "chain".
* (it has only one entry, so calling it a chain may be a stretch)
* It should ONLY be called when getaddrinfo() and friends
* aren't available, OR when dealing with a non IP protocol
* family, such as AF_UNIX
*
* the return value is 1 on success, or 0 on failure, which
* only happens if a memory allocation error occured.
*/
static int addrinfo_wrap(int family, int socktype,
const void *where, size_t wherelen,
unsigned short port,
BIO_ADDRINFO **bai)
{
OPENSSL_assert(bai != NULL);
*bai = OPENSSL_zalloc(sizeof(**bai));
if (*bai == NULL)
return 0;
(*bai)->bai_family = family;
(*bai)->bai_socktype = socktype;
if (socktype == SOCK_STREAM)
(*bai)->bai_protocol = IPPROTO_TCP;
if (socktype == SOCK_DGRAM)
(*bai)->bai_protocol = IPPROTO_UDP;
#ifdef AF_UNIX
if (family == AF_UNIX)
(*bai)->bai_protocol = 0;
#endif
{
/* Magic: We know that BIO_ADDR_sockaddr_noconst is really
just an advanced cast of BIO_ADDR* to struct sockaddr *
by the power of union, so while it may seem that we're
creating a memory leak here, we are not. It will be
all right. */
BIO_ADDR *addr = BIO_ADDR_new();
if (addr != NULL) {
BIO_ADDR_rawmake(addr, family, where, wherelen, port);
(*bai)->bai_addr = BIO_ADDR_sockaddr_noconst(addr);
}
}
(*bai)->bai_next = NULL;
if ((*bai)->bai_addr == NULL) {
BIO_ADDRINFO_free(*bai);
*bai = NULL;
return 0;
}
return 1;
}
/*-
* BIO_lookup - look up the node and service you want to connect to.
* @node: the node you want to connect to.
* @service: the service you want to connect to.
* @lookup_type: declare intent with the result, client or server.
* @family: the address family you want to use. Use AF_UNSPEC for any, or
* AF_INET, AF_INET6 or AF_UNIX.
* @socktype: The socket type you want to use. Can be SOCK_STREAM, SOCK_DGRAM
* or 0 for all.
* @res: Storage place for the resulting list of returned addresses
*
* This will do a lookup of the node and service that you want to connect to.
* It returns a linked list of different addresses you can try to connect to.
*
* When no longer needed you should call BIO_ADDRINFO_free() to free the result.
*
* The return value is 1 on success or 0 in case of error.
*/
int BIO_lookup(const char *host, const char *service,
enum BIO_lookup_type lookup_type,
int family, int socktype, BIO_ADDRINFO **res)
{
int ret = 0; /* Assume failure */
switch(family) {
case AF_INET:
#ifdef AF_INET6
case AF_INET6:
#endif
#ifdef AF_UNIX
case AF_UNIX:
#endif
#ifdef AF_UNSPEC
case AF_UNSPEC:
#endif
break;
default:
BIOerr(BIO_F_BIO_LOOKUP, BIO_R_UNSUPPORTED_PROTOCOL_FAMILY);
return 0;
}
#ifdef AF_UNIX
if (family == AF_UNIX) {
if (addrinfo_wrap(family, socktype, host, strlen(host), 0, res))
return 1;
else
BIOerr(BIO_F_BIO_LOOKUP, ERR_R_MALLOC_FAILURE);
return 0;
}
#endif
if (BIO_sock_init() != 1)
return 0;
if (1) {
int gai_ret = 0;
#ifdef AI_PASSIVE
struct addrinfo hints;
hints.ai_flags = 0;
# ifdef AI_ADDRCONFIG
hints.ai_flags = AI_ADDRCONFIG;
# endif
hints.ai_family = family;
hints.ai_socktype = socktype;
hints.ai_protocol = 0;
hints.ai_addrlen = 0;
hints.ai_addr = NULL;
hints.ai_canonname = NULL;
hints.ai_next = NULL;
if (lookup_type == BIO_LOOKUP_SERVER)
hints.ai_flags |= AI_PASSIVE;
/* Note that |res| SHOULD be a 'struct addrinfo **' thanks to
* macro magic in bio_lcl.h
*/
switch ((gai_ret = getaddrinfo(host, service, &hints, res))) {
# ifdef EAI_SYSTEM
case EAI_SYSTEM:
SYSerr(SYS_F_GETADDRINFO, get_last_socket_error());
BIOerr(BIO_F_BIO_LOOKUP, ERR_R_SYS_LIB);
break;
# endif
case 0:
ret = 1; /* Success */
break;
default:
BIOerr(BIO_F_BIO_LOOKUP, ERR_R_SYS_LIB);
ERR_add_error_data(1, gai_strerror(gai_ret));
break;
}
} else {
#endif
const struct hostent *he;
/* Windows doesn't seem to have in_addr_t */
#ifdef OPENSSL_SYS_WINDOWS
static uint32_t he_fallback_address;
static const uint32_t *he_fallback_addresses[] =
{ &he_fallback_address, NULL };
#else
static in_addr_t he_fallback_address;
static const in_addr_t *he_fallback_addresses[] =
{ &he_fallback_address, NULL };
#endif
static const struct hostent he_fallback =
{ NULL, NULL, AF_INET, sizeof(he_fallback_address),
(char **)&he_fallback_addresses };
struct servent *se;
/* Apprently, on WIN64, s_proto and s_port have traded places... */
#ifdef _WIN64
struct servent se_fallback = { NULL, NULL, NULL, 0 };
#else
struct servent se_fallback = { NULL, NULL, 0, NULL };
#endif
char *proto = NULL;
CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME);
CRYPTO_w_lock(CRYPTO_LOCK_GETSERVBYNAME);
he_fallback_address = INADDR_ANY;
if (host == NULL) {
he = &he_fallback;
switch(lookup_type) {
case BIO_LOOKUP_CLIENT:
he_fallback_address = INADDR_LOOPBACK;
break;
case BIO_LOOKUP_SERVER:
he_fallback_address = INADDR_ANY;
break;
default:
OPENSSL_assert(("We forgot to handle a lookup type!" == 0));
break;
}
} else {
he = gethostbyname(host);
if (he == NULL) {
#ifndef OPENSSL_SYS_WINDOWS
BIOerr(BIO_F_BIO_LOOKUP, ERR_R_SYS_LIB);
ERR_add_error_data(1, hstrerror(h_errno));
#else
SYSerr(SYS_F_GETHOSTBYNAME, WSAGetLastError());
#endif
ret = 0;
goto err;
}
}
if (service == NULL) {
se_fallback.s_port = 0;
se_fallback.s_proto = proto;
se = &se_fallback;
} else {
char *endp = NULL;
long portnum = strtol(service, &endp, 10);
if (endp != service && *endp == '\0'
&& portnum > 0 && portnum < 65536) {
se_fallback.s_port = htons(portnum);
se_fallback.s_proto = proto;
se = &se_fallback;
} else if (endp == service) {
switch (socktype) {
case SOCK_STREAM:
proto = "tcp";
break;
case SOCK_DGRAM:
proto = "udp";
break;
}
se = getservbyname(service, proto);
if (se == NULL) {
#ifndef OPENSSL_SYS_WINDOWS
BIOerr(BIO_F_BIO_LOOKUP, ERR_R_SYS_LIB);
ERR_add_error_data(1, hstrerror(h_errno));
#else
SYSerr(SYS_F_GETSERVBYNAME, WSAGetLastError());
#endif
goto err;
}
} else {
BIOerr(BIO_F_BIO_LOOKUP, BIO_R_MALFORMED_HOST_OR_SERVICE);
goto err;
}
}
*res = NULL;
{
char **addrlistp;
size_t addresses;
BIO_ADDRINFO *tmp_bai = NULL;
/* The easiest way to create a linked list from an
array is to start from the back */
for(addrlistp = he->h_addr_list; *addrlistp != NULL;
addrlistp++)
;
for(addresses = addrlistp - he->h_addr_list;
addrlistp--, addresses-- > 0; ) {
if (!addrinfo_wrap(he->h_addrtype, socktype,
*addrlistp, he->h_length,
se->s_port, &tmp_bai))
goto addrinfo_malloc_err;
tmp_bai->bai_next = *res;
*res = tmp_bai;
continue;
addrinfo_malloc_err:
BIO_ADDRINFO_free(*res);
*res = NULL;
BIOerr(BIO_F_BIO_LOOKUP, ERR_R_MALLOC_FAILURE);
ret = 0;
goto err;
}
ret = 1;
}
err:
CRYPTO_w_unlock(CRYPTO_LOCK_GETSERVBYNAME);
CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME);
}
return ret;
}
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