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Check if an extracted zoneid is equal to the non-zero sin6_scope_id only when

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it is link-local or MC interface-local.
This commit is contained in:
hrs 2012-11-18 16:06:51 +00:00
parent fb4bab611c
commit ec229e5ea6
1 changed files with 8 additions and 6 deletions
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14
sys/netinet6/scope6.c
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@ -369,12 +369,6 @@ sa6_recoverscope(struct sockaddr_in6 *sin6)
char ip6buf[INET6_ADDRSTRLEN];
u_int32_t zoneid;
if (sin6->sin6_scope_id != 0) {
log(LOG_NOTICE,
"sa6_recoverscope: assumption failure (non 0 ID): %s%%%d\n",
ip6_sprintf(ip6buf, &sin6->sin6_addr), sin6->sin6_scope_id);
/* XXX: proceed anyway... */
}
if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr) ||
IN6_IS_ADDR_MC_INTFACELOCAL(&sin6->sin6_addr)) {
/*
@ -387,6 +381,14 @@ sa6_recoverscope(struct sockaddr_in6 *sin6)
return (ENXIO);
if (!ifnet_byindex(zoneid))
return (ENXIO);
if (sin6->sin6_scope_id != 0 &&
zoneid != sin6->sin6_scope_id) {
log(LOG_NOTICE,
"%s: embedded scope mismatch: %s%%%d. "
"sin6_scope_id was overridden.", __func__,
ip6_sprintf(ip6buf, &sin6->sin6_addr),
sin6->sin6_scope_id);
}
sin6->sin6_addr.s6_addr16[1] = 0;
sin6->sin6_scope_id = zoneid;
}