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/*
* Copyright (c) 1999-2000 Sendmail, Inc. and its suppliers.
* All rights reserved.
*
* By using this file, you agree to the terms and conditions set
* forth in the LICENSE file which can be found at the top level of
* the sendmail distribution.
*
*/
#ifndef lint
static char id[] = "@(#)$Sendmail: sm_gethost.c,v 8.7.8.4 2000/12/19 04:26:33 gshapiro Exp $";
#endif /* ! lint */
#if _FFR_MILTER
#include <sendmail.h>
#if NETINET || NETINET6
# include <arpa/inet.h>
#endif /* NETINET || NETINET6 */
/*
** MI_GETHOSTBY{NAME,ADDR} -- compatibility routines for gethostbyXXX
**
** Some operating systems have wierd problems with the gethostbyXXX
** routines. For example, Solaris versions at least through 2.3
** don't properly deliver a canonical h_name field. This tries to
** work around these problems.
**
** Support IPv6 as well as IPv4.
*/
#if NETINET6 && NEEDSGETIPNODE && __RES < 19990909
# ifndef AI_V4MAPPED
# define AI_V4MAPPED 0 /* dummy */
# endif /* ! AI_V4MAPPED */
# ifndef AI_ALL
# define AI_ALL 0 /* dummy */
# endif /* ! AI_ALL */
static struct hostent *
getipnodebyname(name, family, flags, err)
char *name;
int family;
int flags;
int *err;
{
bool resv6 = TRUE;
struct hostent *h;
if (family == AF_INET6)
{
/* From RFC2133, section 6.1 */
resv6 = bitset(RES_USE_INET6, _res.options);
_res.options |= RES_USE_INET6;
}
h_errno = 0;
h = gethostbyname(name);
*err = h_errno;
if (family == AF_INET6 && !resv6)
_res.options &= ~RES_USE_INET6;
return h;
}
# if _FFR_FREEHOSTENT
void
freehostent(h)
struct hostent *h;
{
/*
** Stub routine -- if they don't have getipnodeby*(),
** they probably don't have the free routine either.
*/
return;
}
# endif /* _FFR_FREEHOSTENT */
#endif /* NEEDSGETIPNODE && NETINET6 && __RES < 19990909 */
struct hostent *
mi_gethostbyname(name, family)
char *name;
int family;
{
struct hostent *h = NULL;
#if (SOLARIS > 10000 && SOLARIS < 20400) || (defined(SOLARIS) && SOLARIS < 204) || (defined(sony_news) && defined(__svr4))
# if SOLARIS == 20300 || SOLARIS == 203
static struct hostent hp;
static char buf[1000];
extern struct hostent *_switch_gethostbyname_r();
h = _switch_gethostbyname_r(name, &hp, buf, sizeof(buf), &h_errno);
# else /* SOLARIS == 20300 || SOLARIS == 203 */
extern struct hostent *__switch_gethostbyname();
h = __switch_gethostbyname(name);
# endif /* SOLARIS == 20300 || SOLARIS == 203 */
#else /* (SOLARIS > 10000 && SOLARIS < 20400) || (defined(SOLARIS) && SOLARIS < 204) || (defined(sony_news) && defined(__svr4)) */
# if NETINET6
int err;
# endif /* NETINET6 */
# if NETINET6
h = getipnodebyname(name, family, AI_V4MAPPED|AI_ALL, &err);
h_errno = err;
# else /* NETINET6 */
h = gethostbyname(name);
# endif /* NETINET6 */
#endif /* (SOLARIS > 10000 && SOLARIS < 20400) || (defined(SOLARIS) && SOLARIS < 204) || (defined(sony_news) && defined(__svr4)) */
return h;
}
#endif /* _FFR_MILTER */
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