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-rw-r--r--proto/ospf/ospf.c28
1 files changed, 21 insertions, 7 deletions
diff --git a/proto/ospf/ospf.c b/proto/ospf/ospf.c
index 4a209f2..fce8bd5 100644
--- a/proto/ospf/ospf.c
+++ b/proto/ospf/ospf.c
@@ -237,7 +237,6 @@ ospf_hello_rx(struct ospf_hello_packet *ps, struct proto *p,
return;
}
-
if(ps->options!=ifa->options)
{
log("%s: Bad OSPF packet from %u received: options mismatch.",
@@ -410,28 +409,28 @@ ospf_rx_hook(sock *sk, int size)
ps = (struct ospf_packet *) ipv4_skip_header(sk->rbuf, &size);
if(ps==NULL)
{
- log("%s: Bad packet received: bad IP header", p->name);
+ log("%s: Bad OSPF packet received: bad IP header", p->name);
log("%s: Discarding",p->name);
return(1);
}
if(size < sizeof(struct ospf_packet))
{
- log("%s: Bad packet received: too short (%u bytes)", p->name, size);
+ log("%s: Bad OSPF packet received: too short (%u bytes)", p->name, size);
log("%s: Discarding",p->name);
return(1);
}
if(ntohs(ps->length) != size)
{
- log("%s: Bad packet received: size field does not match", p->name);
+ log("%s: Bad OSPF packet received: size field does not match", p->name);
log("%s: Discarding",p->name);
return(1);
}
if(ps->version!=OSPF_VERSION)
{
- log("%s: Bad packet received: version %u", p->name, ps->version);
+ log("%s: Bad OSPF packet received: version %u", p->name, ps->version);
log("%s: Discarding",p->name);
return(1);
}
@@ -439,7 +438,7 @@ ospf_rx_hook(sock *sk, int size)
if(!ipsum_verify(ps, 16,(void *)ps+sizeof(struct ospf_packet),
ntohs(ps->length)-sizeof(struct ospf_packet), NULL))
{
- log("%s: Bad packet received: bad checksum", p->name);
+ log("%s: Bad OSPF packet received: bad checksum", p->name);
log("%s: Discarding",p->name);
return(1);
}
@@ -448,11 +447,26 @@ ospf_rx_hook(sock *sk, int size)
if(ps->areaid!=ifa->area)
{
- log("%s: Bad packet received: other area %ld", p->name, ps->areaid);
+ log("%s: Bad OSPF packet received: other area %ld", p->name, ps->areaid);
+ log("%s: Discarding",p->name);
+ return(1);
+ }
+
+ if(ntohl(ps->routerid)==p->cf->global->router_id)
+ {
+ log("%s: Bad OSPF packet received: received my own IP!.", p->name);
log("%s: Discarding",p->name);
return(1);
}
+ if(ntohl(ps->routerid)==0)
+ {
+ log("%s: Bad OSPF packet received: Id 0.0.0.0 is not allowed.", p->name);
+ log("%s: Discarding",p->name);
+ return(1);
+ }
+
+
/* Dump packet */
pu8=(u8 *)(sk->rbuf+5*4);
for(i=0;i<ntohs(ps->length);i+=4)