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Don't invoke scripts for INADDR_ANY or INADDR_BROADCAST addresses.

This commit is contained in:
roy 2016-09-29 13:36:30 +00:00
parent 0dbee937df
commit 547a909ccc
1 changed files with 25 additions and 10 deletions
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35
usr.sbin/ifwatchd/ifwatchd.c
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@ -1,4 +1,4 @@
/* $NetBSD: ifwatchd.c,v 1.33 2016/09/21 21:07:29 roy Exp $ */
/* $NetBSD: ifwatchd.c,v 1.34 2016/09/29 13:36:30 roy Exp $ */
/*-
* Copyright (c) 2002, 2003 The NetBSD Foundation, Inc.
@ -374,16 +374,31 @@ invoke_script(const struct sockaddr *sa, const struct sockaddr *dest,
const char *script;
int status;
if (sa != NULL && sa->sa_len == 0) {
fprintf(stderr, "illegal socket address (sa_len == 0)\n");
return;
}
if (sa != NULL && sa->sa_family == AF_INET6) {
struct sockaddr_in6 sin6;
memcpy(&sin6, (const struct sockaddr_in6 *)sa, sizeof (sin6));
if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr))
if (sa != NULL) {
if (sa->sa_len == 0) {
fprintf(stderr,
"illegal socket address (sa_len == 0)\n");
return;
}
switch (sa->sa_family) {
case AF_INET:
{
const struct sockaddr_in *sin;
sin = (const struct sockaddr_in *)sa;
if (sin->sin_addr.s_addr == INADDR_ANY ||
sin->sin_addr.s_addr == INADDR_BROADCAST)
return;
}
case AF_INET6:
{
const struct sockaddr_in6 *sin6;
sin6 = (const struct sockaddr_in6 *)sa;
if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr))
return;
}
}
}
addr[0] = daddr[0] = 0;