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do not try to reverse-lookup IPv6 {unspecified,linklocal} addresses.

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XXX may not be 100% right, as there are people trying to reverse-lookup
them using multicast DNS.
This commit is contained in:
itojun 2001-01-04 10:35:25 +00:00
parent c5fb04a57e
commit 437f6d0b1a
1 changed files with 18 additions and 4 deletions
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22
gnu/dist/sendmail/sendmail/conf.c vendored
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@ -4528,18 +4528,32 @@ sm_gethostbyaddr(addr, len, type)
static struct hostent he;
static char buf[1000];
extern struct hostent *_switch_gethostbyaddr_r();
hp = _switch_gethostbyaddr_r(addr, len, type, &he, buf, sizeof(buf), &h_errno);
# else /* SOLARIS == 20300 || SOLARIS == 203 */
extern struct hostent *__switch_gethostbyaddr();
hp = __switch_gethostbyaddr(addr, len, type);
# endif /* SOLARIS == 20300 || SOLARIS == 203 */
#else /* (SOLARIS > 10000 && SOLARIS < 20400) || (defined(SOLARIS) && SOLARIS < 204) */
# if NETINET6
int err;
# endif /* NETINET6 */
#endif /* (SOLARIS > 10000 && SOLARIS < 20400) || (defined(SOLARIS) && SOLARIS < 204) */
#if NETINET6
if (type == AF_INET6) {
if (IN6_IS_ADDR_UNSPECIFIED((struct in6_addr *)addr) ||
IN6_IS_ADDR_LINKLOCAL((struct in6_addr *)addr)) {
h_errno = HOST_NOT_FOUND;
return NULL;
}
}
#endif /* NETINET6 */
#if (SOLARIS > 10000 && SOLARIS < 20400) || (defined(SOLARIS) && SOLARIS < 204)
# if SOLARIS == 20300 || SOLARIS == 203
hp = _switch_gethostbyaddr_r(addr, len, type, &he, buf, sizeof(buf), &h_errno);
# else /* SOLARIS == 20300 || SOLARIS == 203 */
hp = __switch_gethostbyaddr(addr, len, type);
# endif /* SOLARIS == 20300 || SOLARIS == 203 */
#else /* (SOLARIS > 10000 && SOLARIS < 20400) || (defined(SOLARIS) && SOLARIS < 204) */
# if NETINET6
hp = getipnodebyaddr(addr, len, type, &err);
h_errno = err;