diff options
Diffstat (limited to 'contrib/sendmail/libmilter/sm_gethost.c')
-rw-r--r-- | contrib/sendmail/libmilter/sm_gethost.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/contrib/sendmail/libmilter/sm_gethost.c b/contrib/sendmail/libmilter/sm_gethost.c new file mode 100644 index 0000000..fc45d28 --- /dev/null +++ b/contrib/sendmail/libmilter/sm_gethost.c @@ -0,0 +1,99 @@ +/* + * Copyright (c) 1999 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 2000/01/20 21:51:52 geir 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 * +mi_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; +} +#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 = mi_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 */ |