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-rw-r--r--sysdep/linux/krt-scan.c2
-rw-r--r--sysdep/linux/netlink/netlink.c12
-rw-r--r--sysdep/unix/krt-iface.c11
3 files changed, 22 insertions, 3 deletions
diff --git a/sysdep/linux/krt-scan.c b/sysdep/linux/krt-scan.c
index 42f9287..b7fc129 100644
--- a/sysdep/linux/krt-scan.c
+++ b/sysdep/linux/krt-scan.c
@@ -100,7 +100,7 @@ krt_parse_entry(byte *ent, struct krt_proto *p)
if (flags & RTF_GATEWAY)
{
neighbor *ng = neigh_find(&p->p, &gw, 0);
- if (ng)
+ if (ng && ng->scope)
a.iface = ng->iface;
else
/* FIXME: Remove this warning? Handle it somehow... */
diff --git a/sysdep/linux/netlink/netlink.c b/sysdep/linux/netlink/netlink.c
index 70abdd7..1c9d977 100644
--- a/sysdep/linux/netlink/netlink.c
+++ b/sysdep/linux/netlink/netlink.c
@@ -321,6 +321,7 @@ nl_parse_addr(struct nlmsghdr *h)
int new = h->nlmsg_type == RTM_NEWADDR;
struct ifa ifa;
struct iface *ifi;
+ int scope;
if (!(i = nl_checkin(h, sizeof(*i))) || !nl_parse_attrs(IFA_RTA(i), a, sizeof(a)))
return;
@@ -355,6 +356,7 @@ nl_parse_addr(struct nlmsghdr *h)
ifa.iface = ifi;
if (i->ifa_flags & IFA_F_SECONDARY)
ifa.flags |= IA_SECONDARY;
+
/* IFA_LOCAL can be unset for IPv6 interfaces */
memcpy(&ifa.ip, RTA_DATA(a[IFA_LOCAL] ? : a[IFA_ADDRESS]), sizeof(ifa.ip));
ipa_ntoh(ifa.ip);
@@ -389,6 +391,14 @@ nl_parse_addr(struct nlmsghdr *h)
ifa.prefix = ipa_and(ifa.ip, netmask);
}
+ scope = ipa_classify(ifa.ip);
+ if (scope < 0)
+ {
+ log(L_ERR "KIF: Invalid interface address %I", ifa.ip);
+ return;
+ }
+ ifa.scope = scope & IADDR_SCOPE_MASK;
+
DBG("KIF: IF%d(%s): %s IPA %I, flg %x, net %I/%d, brd %I, opp %I\n",
ifi->index, ifi->name,
new ? "added" : "removed",
@@ -664,7 +674,7 @@ nl_parse_route(struct nlmsghdr *h, int scan)
memcpy(&ra.gw, RTA_DATA(a[RTA_GATEWAY]), sizeof(ra.gw));
ipa_ntoh(ra.gw);
ng = neigh_find(&p->p, &ra.gw, 0);
- if (ng)
+ if (ng && ng->scope)
ra.iface = ng->iface;
else
/* FIXME: Remove this warning? Handle it somehow... */
diff --git a/sysdep/unix/krt-iface.c b/sysdep/unix/krt-iface.c
index bd4a40a..ddd70e9 100644
--- a/sysdep/unix/krt-iface.c
+++ b/sysdep/unix/krt-iface.c
@@ -35,7 +35,7 @@ scan_ifs(struct ifreq *r, int cnt)
char *err, *colon;
unsigned fl;
ip_addr netmask;
- int l;
+ int l, scope;
if_start_update();
for (cnt /= sizeof(struct ifreq); cnt; cnt--, r++)
@@ -115,6 +115,14 @@ scan_ifs(struct ifreq *r, int cnt)
)
i.flags |= IF_MULTICAST;
+ scope = ipa_classify(a.ip);
+ if (scope < 0)
+ {
+ log(L_ERR "%s: Invalid address", i.name);
+ goto bad;
+ }
+ a.scope = scope & IADDR_SCOPE_MASK;
+
if (a.pxlen < 32)
{
a.brd = ipa_or(a.prefix, ipa_not(ipa_mkmask(a.pxlen)));
@@ -132,6 +140,7 @@ scan_ifs(struct ifreq *r, int cnt)
}
else
a.brd = a.opposite;
+ a.scope = SCOPE_UNIVERSE;
if (ioctl(if_scan_sock, SIOCGIFMTU, r) < 0)
{ err = "SIOCGIFMTU"; goto faulty; }