2003-09-29 Paul Jakma <paul@dishone.st>
* zebra/connected.c: revert the 'generic PtP' patch as it causes
far too many problems. People who use FreeSWAN should investigate
native linux ipsec.
* zebra/rt_netlink.c: ditto
* lib/if.c: ditto
* ripd/ripd.h: ditto
* ripd/ripd.c: ditto
* ripd/rip_interface.c: ditto
* ospfd/ospfd.c: ditto
* ospfd/ospf_snmp.c: ditto
* bgpd/bgp_nexthop.c: ditto
diff --git a/ripd/rip_interface.c b/ripd/rip_interface.c
index b472522..2668e7d 100644
--- a/ripd/rip_interface.c
+++ b/ripd/rip_interface.c
@@ -396,6 +396,106 @@
return count;
}
+
+
+
+
+/* Does this address belongs to me ? */
+int
+if_check_address (struct in_addr addr)
+{
+ listnode node;
+
+ for (node = listhead (iflist); node; nextnode (node))
+ {
+ listnode cnode;
+ struct interface *ifp;
+
+ ifp = getdata (node);
+
+ for (cnode = listhead (ifp->connected); cnode; nextnode (cnode))
+ {
+ struct connected *connected;
+ struct prefix_ipv4 *p;
+
+ connected = getdata (cnode);
+ p = (struct prefix_ipv4 *) connected->address;
+
+ if (p->family != AF_INET)
+ continue;
+
+ if (IPV4_ADDR_CMP (&p->prefix, &addr) == 0)
+ return 1;
+ }
+ }
+ return 0;
+}
+
+/* is this address from a valid neighbor? (RFC2453 - Sec. 3.9.2) */
+int
+if_valid_neighbor (struct in_addr addr)
+{
+ listnode node;
+ struct connected *connected = NULL;
+ struct prefix_ipv4 *p;
+
+ for (node = listhead (iflist); node; nextnode (node))
+ {
+ listnode cnode;
+ struct interface *ifp;
+
+ ifp = getdata (node);
+
+ for (cnode = listhead (ifp->connected); cnode; nextnode (cnode))
+ {
+ struct prefix *pxn = NULL; /* Prefix of the neighbor */
+ struct prefix *pxc = NULL; /* Prefix of the connected network */
+
+ connected = getdata (cnode);
+
+ if (if_is_pointopoint (ifp))
+ {
+ p = (struct prefix_ipv4 *) connected->address;
+
+ if (p && p->family == AF_INET)
+ {
+ if (IPV4_ADDR_SAME (&p->prefix, &addr))
+ return 1;
+
+ p = (struct prefix_ipv4 *) connected->destination;
+ if (p && IPV4_ADDR_SAME (&p->prefix, &addr))
+ return 1;
+ }
+ }
+ else
+ {
+ p = (struct prefix_ipv4 *) connected->address;
+
+ if (p->family != AF_INET)
+ continue;
+
+ pxn = prefix_new();
+ pxn->family = AF_INET;
+ pxn->prefixlen = 32;
+ pxn->u.prefix4 = addr;
+
+ pxc = prefix_new();
+ prefix_copy(pxc, (struct prefix *) p);
+ apply_mask(pxc);
+
+ if (prefix_match (pxc, pxn))
+ {
+ prefix_free (pxn);
+ prefix_free (pxc);
+ return 1;
+ }
+ prefix_free(pxc);
+ prefix_free(pxn);
+ }
+ }
+ }
+ return 0;
+}
/* Inteface link down message processing. */
int