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Make this work in the !INET6 case -- if we mismatch the AF, don't return a

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bogus (uninitialized) structure. Also, ignore v4 ifa's with no broadcast
address (rather than core dumping).

NetBSD Rev 1.8

Reviewed by:		phk
Obtained from:		NetBSD
This commit is contained in:
Martin Blapp 2003-01-27 22:43:23 +00:00
parent d063ef1461
commit 33e0ae486e
1 changed files with 10 additions and 9 deletions
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19
lib/libc/rpc/clnt_bcast.c
View file

@ -149,28 +149,25 @@ __rpc_getbroadifs(int af, int proto, int socktype, broadlist_t *list)
if (ifap->ifa_addr->sa_family != af ||
!(ifap->ifa_flags & IFF_UP))
continue;
#ifdef INET6
if ((af == AF_INET6 && !(ifap->ifa_flags & IFF_MULTICAST)) ||
!(ifap->ifa_flags & IFF_BROADCAST))
continue;
#endif
bip = (struct broadif *)malloc(sizeof *bip);
if (bip == NULL)
break;
bip->index = if_nametoindex(ifap->ifa_name);
if (
#ifdef INET6
if (af != AF_INET6 && (ifap->ifa_flags & IFF_BROADCAST)) {
#else
if (ifap->ifa_flags & IFF_BROADCAST) {
af != AF_INET6 &&
#endif
(ifap->ifa_flags & IFF_BROADCAST) &&
ifap->ifa_broadaddr) {
memcpy(&bip->broadaddr, ifap->ifa_broadaddr,
(size_t)ifap->ifa_broadaddr->sa_len);
sin = (struct sockaddr_in *)(void *)&bip->broadaddr;
sin->sin_port =
((struct sockaddr_in *)
(void *)res->ai_addr)->sin_port;
} else
#ifdef INET6
} else if (af == AF_INET6) {
if (af == AF_INET6 && (ifap->ifa_flags & IFF_MULTICAST)) {
sin6 = (struct sockaddr_in6 *)(void *)&bip->broadaddr;
inet_pton(af, RPCB_MULTICAST_ADDR, &sin6->sin6_addr);
sin6->sin6_family = af;
@ -179,7 +176,11 @@ __rpc_getbroadifs(int af, int proto, int socktype, broadlist_t *list)
((struct sockaddr_in6 *)
(void *)res->ai_addr)->sin6_port;
sin6->sin6_scope_id = bip->index;
} else
#endif
{
free(bip);
continue;
}
TAILQ_INSERT_TAIL(list, bip, link);
count++;