114 lines
2.9 KiB
C
114 lines
2.9 KiB
C
/*
|
||
* 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[] = "@(#)$Id: 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 */
|