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Move check for NULL before usage of variable.

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This commit is contained in:
Ondrej Zajicek 2009-01-11 10:51:54 +01:00
parent f20907adf6
commit 0e9617e400
1 changed files with 6 additions and 5 deletions
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11
proto/ospf/packet.c
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@ -232,6 +232,12 @@ ospf_rx_hook(sock * sk, int size)
ps = (struct ospf_packet *) ipv4_skip_header(sk->rbuf, &size); ps = (struct ospf_packet *) ipv4_skip_header(sk->rbuf, &size);
if (ps == NULL)
{
log(L_ERR "%s%I - bad IP header", mesg, sk->faddr);
return 1;
}
if ((ifa->oa->areaid != 0) && (ntohl(ps->areaid) == 0)) if ((ifa->oa->areaid != 0) && (ntohl(ps->areaid) == 0))
{ {
WALK_LIST(iff, po->iface_list) WALK_LIST(iff, po->iface_list)
@ -247,11 +253,6 @@ ospf_rx_hook(sock * sk, int size)
DBG("%s: RX_Hook called on interface %s.\n", p->name, sk->iface->name); DBG("%s: RX_Hook called on interface %s.\n", p->name, sk->iface->name);
osize = ntohs(ps->length); osize = ntohs(ps->length);
if (ps == NULL)
{
log(L_ERR "%s%I - bad IP header", mesg, sk->faddr);
return 1;
}
if ((unsigned) size < sizeof(struct ospf_packet)) if ((unsigned) size < sizeof(struct ospf_packet))
{ {