100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
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/*
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* Copyright (c) 1999 Sendmail, Inc. and its suppliers.
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* All rights reserved.
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the sendmail distribution.
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*
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*/
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#ifndef lint
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static char id[] = "@(#)$Id: sm_gethost.c,v 8.7 2000/01/20 21:51:52 geir Exp $";
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#endif /* ! lint */
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#if _FFR_MILTER
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#include <sendmail.h>
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#if NETINET || NETINET6
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# include <arpa/inet.h>
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#endif /* NETINET || NETINET6 */
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/*
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** MI_GETHOSTBY{NAME,ADDR} -- compatibility routines for gethostbyXXX
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**
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** Some operating systems have wierd problems with the gethostbyXXX
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** routines. For example, Solaris versions at least through 2.3
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** don't properly deliver a canonical h_name field. This tries to
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** work around these problems.
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**
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** Support IPv6 as well as IPv4.
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*/
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#if NETINET6 && NEEDSGETIPNODE && __RES < 19990909
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# ifndef AI_V4MAPPED
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# define AI_V4MAPPED 0 /* dummy */
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# endif /* ! AI_V4MAPPED */
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# ifndef AI_ALL
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# define AI_ALL 0 /* dummy */
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# endif /* ! AI_ALL */
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static struct hostent *
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mi_getipnodebyname(name, family, flags, err)
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char *name;
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int family;
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int flags;
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int *err;
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{
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bool resv6 = TRUE;
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struct hostent *h;
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if (family == AF_INET6)
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{
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/* From RFC2133, section 6.1 */
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resv6 = bitset(RES_USE_INET6, _res.options);
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_res.options |= RES_USE_INET6;
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}
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h_errno = 0;
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h = gethostbyname(name);
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*err = h_errno;
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if (family == AF_INET6 && !resv6)
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_res.options &= ~RES_USE_INET6;
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return h;
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}
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#endif /* NEEDSGETIPNODE && NETINET6 && __RES < 19990909 */
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struct hostent *
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mi_gethostbyname(name, family)
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char *name;
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int family;
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{
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struct hostent *h = NULL;
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#if (SOLARIS > 10000 && SOLARIS < 20400) || (defined(SOLARIS) && SOLARIS < 204) || (defined(sony_news) && defined(__svr4))
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# if SOLARIS == 20300 || SOLARIS == 203
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static struct hostent hp;
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static char buf[1000];
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extern struct hostent *_switch_gethostbyname_r();
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h = _switch_gethostbyname_r(name, &hp, buf, sizeof(buf), &h_errno);
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# else /* SOLARIS == 20300 || SOLARIS == 203 */
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extern struct hostent *__switch_gethostbyname();
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h = __switch_gethostbyname(name);
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# endif /* SOLARIS == 20300 || SOLARIS == 203 */
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#else /* (SOLARIS > 10000 && SOLARIS < 20400) || (defined(SOLARIS) && SOLARIS < 204) || (defined(sony_news) && defined(__svr4)) */
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# if NETINET6
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int err;
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# endif /* NETINET6 */
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# if NETINET6
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h = mi_getipnodebyname(name, family, AI_V4MAPPED|AI_ALL, &err);
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h_errno = err;
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# else /* NETINET6 */
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h = gethostbyname(name);
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# endif /* NETINET6 */
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#endif /* (SOLARIS > 10000 && SOLARIS < 20400) || (defined(SOLARIS) && SOLARIS < 204) || (defined(sony_news) && defined(__svr4)) */
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return h;
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}
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#endif /* _FFR_MILTER */
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