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Netmask checking for hello packets added.

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This commit is contained in:
Ondrej Filip 1999-05-14 08:46:06 +00:00
parent 7426ee3d49
commit 67ff91302f
2 changed files with 15 additions and 3 deletions
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12
proto/ospf/ospf.c
View file

@ -27,6 +27,18 @@ void
ospf_hello_rx(struct ospf_hello_packet *ps, struct proto *p, ospf_hello_rx(struct ospf_hello_packet *ps, struct proto *p,
struct ospf_iface *ifa) struct ospf_iface *ifa)
{ {
char sip[100]; /* FIXME: Should be smaller */
if(ipa_mklen(ipa_ntoh(ps->netmask))!=ifa->iface->addr->pxlen)
{
ip_ntop(ps->netmask,sip);
log("%s: Bad OSPF packet from %d received: bad netmask %s.",
p->name, ntohl(((struct ospf_packet *)ps)->routerid), sip);
/*ip_ntop(ps->netmask, sip));*/
log("%s: Discarding",p->name);
return;
}
switch(ifa->state) switch(ifa->state)
{ {
case OSPF_IS_DOWN: case OSPF_IS_DOWN:

4
proto/ospf/ospf.h
View file

@ -102,8 +102,8 @@ struct ospf_packet {
}; };
struct ospf_hello_packet { struct ospf_hello_packet {
struct ospf_packet; struct ospf_packet ospf_packet;
u32 netmask; ip_addr netmask;
u16 hello_int; u16 hello_int;
u8 options; u8 options;
u8 priority; u8 priority;