/* * Copyright (c) 1999-2001 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 8.7.8.10 2001/05/09 20:57:12 gshapiro Exp $"; #endif /* ! lint */ #if _FFR_MILTER #include #if NETINET || NETINET6 # include #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 # 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; } SM_SET_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 */ 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); SM_SET_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 */