diff options
Diffstat (limited to 'proto/ospf')
| -rw-r--r-- | proto/ospf/dbdes.c | 1 | ||||
| -rw-r--r-- | proto/ospf/lsupd.c | 23 |
2 files changed, 18 insertions, 6 deletions
diff --git a/proto/ospf/dbdes.c b/proto/ospf/dbdes.c index 64e613b..83ef4f1 100644 --- a/proto/ospf/dbdes.c +++ b/proto/ospf/dbdes.c @@ -227,7 +227,6 @@ ospf_dbdes_rx(struct ospf_dbdes_packet *ps, struct proto *p, case NEIGHBOR_DOWN: case NEIGHBOR_ATTEMPT: case NEIGHBOR_2WAY: - debug("%s: Received dbdes from %I in bad state.\n", p->name, n->ip); return; break; case NEIGHBOR_INIT: diff --git a/proto/ospf/lsupd.c b/proto/ospf/lsupd.c index 1bae1bd..002dea0 100644 --- a/proto/ospf/lsupd.c +++ b/proto/ospf/lsupd.c @@ -16,6 +16,7 @@ flood_lsa(struct ospf_neighbor *n, struct ospf_lsa_header *hn, struct ospf_iface *ifa; struct ospf_neighbor *nn; struct top_hash_entry *en; + struct proto *p=&po->proto; int ret,retval=0; /* pg 148 */ @@ -128,10 +129,11 @@ flood_lsa(struct ospf_neighbor *n, struct ospf_lsa_header *hn, en=ospf_hash_find_header(oa->gr,hh); htonlsab(en->lsa_body,help,hh->type,hh->length -sizeof(struct ospf_lsa_header)); - len=hh->length; + len=hh->length+sizeof(struct ospf_lsupd_packet); } op->length=htons(len); ospf_pkt_finalize(ifa, op); + debug("%s: LS upd flooded via %s\n", p->name, ifa->iface->name); if(ifa->type==OSPF_IT_NBMA) { @@ -184,10 +186,10 @@ ospf_lsupd_tx_list(struct ospf_neighbor *n, list *l) if((len+en->lsa.length)>n->ifa->iface->mtu) { pk->lsano=htonl(lsano); - op->length=htons(len); + op->length=htons(len-SIPH); ospf_pkt_finalize(n->ifa, op); - sk_send_to(n->ifa->ip_sk,len, n->ip, OSPF_PROTO); + sk_send_to(n->ifa->ip_sk,len-SIPH, n->ip, OSPF_PROTO); debug("%s: LS upd sent to %I\n", p->name, n->ip); DBG("LSupd: next packet\n"); @@ -201,15 +203,15 @@ ospf_lsupd_tx_list(struct ospf_neighbor *n, list *l) htonlsab(en->lsa_body, pktpos, en->lsa.type, en->lsa.length -sizeof(struct ospf_lsa_header)); pktpos=pktpos+en->lsa.length-sizeof(struct ospf_lsa_header); - len=len+en->lsa.length; + len+=en->lsa.length; lsano++; } pk->lsano=htonl(lsano); op->length=htons(len-SIPH); ospf_pkt_finalize(n->ifa, op); - sk_send_to(n->ifa->ip_sk,len, n->ip, OSPF_PROTO); debug("%s: LS upd sent to %I\n", p->name, n->ip); + sk_send_to(n->ifa->ip_sk,len-SIPH, n->ip, OSPF_PROTO); } void @@ -228,6 +230,7 @@ ospf_lsupd_rx(struct ospf_lsupd_packet *ps, struct proto *p, myrid=p->cf->global->router_id; + if((n=find_neigh(ifa, nrid))==NULL) { debug("%s: Received lsupd from unknown neigbor! (%I)\n", p->name, @@ -240,6 +243,11 @@ ospf_lsupd_rx(struct ospf_lsupd_packet *ps, struct proto *p, p->name,n->ip); return; } + if(size<=(sizeof(struct ospf_lsupd_packet)+sizeof(struct ospf_lsa_header))) + { + log("%s: Received lsupd from %I is too short\n", p->name,n->ip); + return; + } debug("%s: Received LS upd from (%I)\n", p->name, n->ip); @@ -252,6 +260,11 @@ ospf_lsupd_rx(struct ospf_lsupd_packet *ps, struct proto *p, struct ospf_lsa_header lsatmp; struct top_hash_entry *lsadb; u16 lenn; + int diff=((u8 *)lsa)-((u8 *)ps); + + if(((diff+sizeof(struct ospf_lsa_header))>=size) || + ((ntohs(lsa->length)+diff)>size)) + log("%s: Received lsupd from %I is too short\n", p->name,n->ip); lenn=ntohs(lsa->length); |