static int
ospf_decode_v2(register const struct ospfhdr *op,
register const u_char *dataend)
{
register const struct in_addr *ap;
register const struct lsr *lsrp;
register const struct lsa_hdr *lshp;
register const struct lsa *lsap;
register char sep;
register int i;
switch (op->ospf_type) {
case OSPF_TYPE_UMD:
/*
* Rob Coltun's special monitoring packets;
* do nothing
*/
break;
case OSPF_TYPE_HELLO:
if (vflag) {
TCHECK(op->ospf_hello.hello_deadint);
ospf_print_bits(ospf_option_bits,
op->ospf_hello.hello_options);
printf(" mask %s int %d pri %d dead %u",
ipaddr_string(&op->ospf_hello.hello_mask),
ntohs(op->ospf_hello.hello_helloint),
op->ospf_hello.hello_priority,
(u_int32_t)ntohl(op->ospf_hello.hello_deadint));
}
TCHECK(op->ospf_hello.hello_dr);
if (op->ospf_hello.hello_dr.s_addr != 0)
printf(" dr %s",
ipaddr_string(&op->ospf_hello.hello_dr));
TCHECK(op->ospf_hello.hello_bdr);
if (op->ospf_hello.hello_bdr.s_addr != 0)
printf(" bdr %s",
ipaddr_string(&op->ospf_hello.hello_bdr));
if (vflag) {
printf(" nbrs");
ap = op->ospf_hello.hello_neighbor;
while ((u_char *)ap < dataend) {
TCHECK(*ap);
printf(" %s", ipaddr_string(ap));
++ap;
}
}
break; /* HELLO */
case OSPF_TYPE_DB:
TCHECK(op->ospf_db.db_options);
ospf_print_bits(ospf_option_bits, op->ospf_db.db_options);
sep = ' ';
TCHECK(op->ospf_db.db_flags);
if (op->ospf_db.db_flags & OSPF_DB_INIT) {
printf("%cI", sep);
sep = '/';
}
if (op->ospf_db.db_flags & OSPF_DB_MORE) {
printf("%cM", sep);
sep = '/';
}
if (op->ospf_db.db_flags & OSPF_DB_MASTER) {
printf("%cMS", sep);
sep = '/';
}
TCHECK(op->ospf_db.db_seq);
printf(" mtu %u S %X", ntohs(op->ospf_db.db_mtu),
(u_int32_t)ntohl(op->ospf_db.db_seq));
if (vflag) {
/* Print all the LS adv's */
lshp = op->ospf_db.db_lshdr;
while (!ospf_print_lshdr(lshp)) {
/* { (ctags) */
printf(" }");
++lshp;
}
}
break;
case OSPF_TYPE_LSR:
if (vflag) {
lsrp = op->ospf_lsr;
while ((u_char *)lsrp < dataend) {
TCHECK(*lsrp);
printf(" {"); /* } (ctags) */
ospf_print_ls_type(ntohl(lsrp->ls_type),
&lsrp->ls_stateid,
&lsrp->ls_router,
"LinkStateType %d");
/* { (ctags) */
printf(" }");
++lsrp;
}
}
break;
case OSPF_TYPE_LSU:
if (vflag) {
lsap = op->ospf_lsu.lsu_lsa;
TCHECK(op->ospf_lsu.lsu_count);
i = ntohl(op->ospf_lsu.lsu_count);
while (i--) {
if (ospf_print_lsa(lsap))
goto trunc;
lsap = (struct lsa *)((u_char *)lsap +
ntohs(lsap->ls_hdr.ls_length));
}
}
break;
case OSPF_TYPE_LSA:
if (vflag) {
lshp = op->ospf_lsa.lsa_lshdr;
while (!ospf_print_lshdr(lshp)) {
/* { (ctags) */
printf(" }");
++lshp;
}
}
break;
default:
printf("v2 type %d", op->ospf_type);
break;
}
return (0);
trunc:
return (1);
}
static int
ospf_decode_v2(register const struct ospfhdr *op,
register const u_char *dataend)
{
register const struct in_addr *ap;
register const struct lsr *lsrp;
register const struct lsa_hdr *lshp;
register const struct lsa *lsap;
register u_int32_t lsa_count,lsa_count_max;
switch (op->ospf_type) {
case OSPF_TYPE_UMD:
/*
* Rob Coltun's special monitoring packets;
* do nothing
*/
break;
case OSPF_TYPE_HELLO:
printf("\n\tOptions: [%s]",
bittok2str(ospf_option_values,"none",op->ospf_hello.hello_options));
TCHECK(op->ospf_hello.hello_deadint);
printf("\n\t Hello Timer: %us, Dead Timer %us, Mask: %s, Priority: %u",
EXTRACT_16BITS(&op->ospf_hello.hello_helloint),
EXTRACT_32BITS(&op->ospf_hello.hello_deadint),
ipaddr_string(&op->ospf_hello.hello_mask),
op->ospf_hello.hello_priority);
TCHECK(op->ospf_hello.hello_dr);
if (op->ospf_hello.hello_dr.s_addr != 0)
printf("\n\t Designated Router %s",
ipaddr_string(&op->ospf_hello.hello_dr));
TCHECK(op->ospf_hello.hello_bdr);
if (op->ospf_hello.hello_bdr.s_addr != 0)
printf(", Backup Designated Router %s",
ipaddr_string(&op->ospf_hello.hello_bdr));
ap = op->ospf_hello.hello_neighbor;
if ((u_char *)ap < dataend)
printf("\n\t Neighbor List:");
while ((u_char *)ap < dataend) {
TCHECK(*ap);
printf("\n\t %s", ipaddr_string(ap));
++ap;
}
break; /* HELLO */
case OSPF_TYPE_DD:
TCHECK(op->ospf_db.db_options);
printf("\n\tOptions: [%s]",
bittok2str(ospf_option_values,"none",op->ospf_db.db_options));
TCHECK(op->ospf_db.db_flags);
printf(", DD Flags: [%s]",
bittok2str(ospf_dd_flag_values,"none",op->ospf_db.db_flags));
if (vflag) {
/* Print all the LS adv's */
lshp = op->ospf_db.db_lshdr;
while (ospf_print_lshdr(lshp) != -1) {
++lshp;
}
}
break;
case OSPF_TYPE_LS_REQ:
lsrp = op->ospf_lsr;
while ((u_char *)lsrp < dataend) {
TCHECK(*lsrp);
printf("\n\t Advertising Router: %s, %s LSA (%u)",
ipaddr_string(&lsrp->ls_router),
tok2str(lsa_values,"unknown",EXTRACT_32BITS(lsrp->ls_type)),
EXTRACT_32BITS(&lsrp->ls_type));
switch (EXTRACT_32BITS(lsrp->ls_type)) {
/* the LSA header for opaque LSAs was slightly changed */
case LS_TYPE_OPAQUE_LL:
case LS_TYPE_OPAQUE_AL:
case LS_TYPE_OPAQUE_DW:
printf(", Opaque-Type: %s LSA (%u), Opaque-ID: %u",
tok2str(lsa_opaque_values, "unknown",lsrp->un_ls_stateid.opaque_field.opaque_type),
lsrp->un_ls_stateid.opaque_field.opaque_type,
EXTRACT_24BITS(&lsrp->un_ls_stateid.opaque_field.opaque_id));
break;
default:
printf(", LSA-ID: %s",
ipaddr_string(&lsrp->un_ls_stateid.ls_stateid));
break;
}
++lsrp;
}
break;
case OSPF_TYPE_LS_UPDATE:
lsap = op->ospf_lsu.lsu_lsa;
TCHECK(op->ospf_lsu.lsu_count);
lsa_count_max = EXTRACT_32BITS(&op->ospf_lsu.lsu_count);
printf(", %d LSA%s",lsa_count_max, lsa_count_max > 1 ? "s" : "");
for (lsa_count=1;lsa_count <= lsa_count_max;lsa_count++) {
printf("\n\t LSA #%u",lsa_count);
lsap = (const struct lsa *)ospf_print_lsa(lsap);
if (lsap == NULL)
goto trunc;
}
break;
case OSPF_TYPE_LS_ACK:
lshp = op->ospf_lsa.lsa_lshdr;
while (ospf_print_lshdr(lshp) != -1) {
++lshp;
}
break;
default:
printf("v2 type (%d)", op->ospf_type);
break;
}
return (0);
trunc:
return (1);
}