#ifndef lint
static const char rcsid[] _U_ =
- "@(#) $Header: /tcpdump/master/tcpdump/print-ospf.c,v 1.62 2007-07-24 16:01:42 hannes Exp $ (LBL)";
+ "@(#) $Header: /tcpdump/master/tcpdump/print-ospf.c,v 1.66 2007-10-08 07:53:21 hannes Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
#include "ip.h"
static struct tok ospf_option_values[] = {
- { OSPF_OPTION_T, "TOS" },
+ { OSPF_OPTION_T, "MultiTopology" }, /* draft-ietf-ospf-mt-09 */
{ OSPF_OPTION_E, "External" },
{ OSPF_OPTION_MC, "Multicast" },
{ OSPF_OPTION_NP, "NSSA" },
- { OSPF_OPTION_EA, "Advertise External" },
+ { OSPF_OPTION_L, "LLS" },
{ OSPF_OPTION_DC, "Demand Circuit" },
{ OSPF_OPTION_O, "Opaque" },
{ OSPF_OPTION_DN, "Up/Down" },
{ OSPF_DB_INIT, "Init" },
{ OSPF_DB_MORE, "More" },
{ OSPF_DB_MASTER, "Master" },
+ { OSPF_DB_RESYNC, "OOBResync" },
{ 0, NULL }
};
{ 0, NULL }
};
+static struct tok ospf_lls_tlv_values[] = {
+ { OSPF_LLS_EO, "Extended Options" },
+ { OSPF_LLS_MD5, "MD5 Authentication" },
+ { 0, NULL }
+};
+
+static struct tok ospf_lls_eo_options[] = {
+ { OSPF_LLS_EO_LR, "LSDB resync" },
+ { OSPF_LLS_EO_RS, "Restart" },
+ { 0, NULL }
+};
+
static char tstr[] = " [|ospf2]";
#ifdef WIN32
static int ospf_print_lshdr(const struct lsa_hdr *);
static const u_char *ospf_print_lsa(const struct lsa *);
static int ospf_decode_v2(const struct ospfhdr *, const u_char *);
+static int ospf_decode_lls(const struct ospfhdr *, register u_int);
int
-ospf_print_grace_lsa (u_int8_t *tptr, u_int ls_length) {
+ospf_print_grace_lsa (const u_int8_t *tptr, u_int ls_length) {
u_int tlv_type, tlv_length;
}
int
-ospf_print_te_lsa (u_int8_t *tptr, u_int ls_length) {
+ospf_print_te_lsa (const u_int8_t *tptr, u_int ls_length) {
u_int tlv_type, tlv_length, subtlv_type, subtlv_length;
u_int priority_level, te_class, count_srlg;
TCHECK(lshp->ls_length);
ls_length = EXTRACT_16BITS(&lshp->ls_length);
if (ls_length < sizeof(struct lsa_hdr)) {
- printf("\n\t Bogus length %u < %lu", ls_length,
+ printf("\n\t Bogus length %u < header (%lu)", ls_length,
(unsigned long)sizeof(struct lsa_hdr));
return(-1);
}
return (-1);
}
+/* draft-ietf-ospf-mt-09 */
+static struct tok ospf_topology_values[] = {
+ { 0, "default " },
+ { 1, "multicast " },
+ { 2, "management " },
+ { 0, NULL }
+};
+
+/*
+ * Print all the per-topology metrics.
+ */
+static void
+ospf_print_tos_metrics(const union un_tos *tos)
+{
+ int metric_count;
+ int toscount;
+
+ toscount = tos->link.link_tos_count+1;
+ metric_count = 0;
+
+ /*
+ * All but the first metric contain a valid topology id.
+ */
+ while (toscount) {
+ printf("\n\t\ttopology %s(%u), metric %u",
+ tok2str(ospf_topology_values, "",
+ metric_count ? tos->metrics.tos_type : 0),
+ metric_count ? tos->metrics.tos_type : 0,
+ EXTRACT_16BITS(&tos->metrics.tos_metric));
+ metric_count++;
+ tos++;
+ toscount--;
+ }
+}
+
/*
* Print a single link state advertisement. If truncated or if LSA length
* field is less than the length of the LSA header, return NULl, else
{
register const u_int8_t *ls_end;
register const struct rlalink *rlp;
- register const struct tos_metric *tosp;
register const struct in_addr *ap;
register const struct aslametric *almp;
register const struct mcla *mcp;
register const u_int32_t *lp;
- register int j, k, tlv_type, tlv_length;
+ register int j, tlv_type, tlv_length, topology;
register int ls_length;
const u_int8_t *tptr;
rlp = lsap->lsa_un.un_rla.rla_link;
while (j--) {
TCHECK(*rlp);
- switch (rlp->link_type) {
+ switch (rlp->un_tos.link.link_type) {
case RLA_TYPE_VIRTUAL:
printf("\n\t Virtual Link: Neighbor Router-ID: %s, Interface Address: %s",
default:
printf("\n\t Unknown Router Link Type (%u)",
- rlp->link_type);
+ rlp->un_tos.link.link_type);
return (ls_end);
}
- printf(", tos 0, metric: %d", EXTRACT_16BITS(&rlp->link_tos0metric));
- tosp = (struct tos_metric *)
- ((sizeof rlp->link_tos0metric) + (u_char *) rlp);
- for (k = 0; k < (int) rlp->link_toscount; ++k, ++tosp) {
- TCHECK(*tosp);
- printf(", tos %d, metric: %d",
- tosp->tos_type,
- EXTRACT_16BITS(&tosp->tos_metric));
- }
+
+ ospf_print_tos_metrics(&rlp->un_tos);
+
rlp = (struct rlalink *)((u_char *)(rlp + 1) +
- ((rlp->link_toscount) * sizeof(*tosp)));
+ ((rlp->un_tos.link.link_tos_count) * sizeof(union un_tos)));
}
break;
ipaddr_string(&lsap->lsa_un.un_sla.sla_mask));
TCHECK(lsap->lsa_un.un_sla.sla_tosmetric);
lp = lsap->lsa_un.un_sla.sla_tosmetric;
- /* suppress tos if its not supported */
- if(!((lsap->ls_hdr.ls_options)&OSPF_OPTION_T)) {
- printf(", metric %u", EXTRACT_32BITS(lp)&SLA_MASK_METRIC);
- break;
- }
while ((u_char *)lp < ls_end) {
register u_int32_t ul;
TCHECK(*lp);
ul = EXTRACT_32BITS(lp);
- printf(", tos %d metric %d",
- (ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS,
- ul & SLA_MASK_METRIC);
+ topology = (ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS;
+ printf("\n\t\ttopology %s(%u) metric %d",
+ tok2str(ospf_topology_values, "", topology),
+ topology,
+ ul & SLA_MASK_METRIC);
++lp;
}
break;
case LS_TYPE_SUM_ABR:
TCHECK(lsap->lsa_un.un_sla.sla_tosmetric);
lp = lsap->lsa_un.un_sla.sla_tosmetric;
- /* suppress tos if its not supported */
- if(!((lsap->ls_hdr.ls_options)&OSPF_OPTION_T)) {
- printf(", metric: %u", EXTRACT_32BITS(lp)&SLA_MASK_METRIC);
- break;
- }
while ((u_char *)lp < ls_end) {
register u_int32_t ul;
TCHECK(*lp);
ul = EXTRACT_32BITS(lp);
- printf(", tos %d metric %d",
- (ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS,
- ul & SLA_MASK_METRIC);
+ topology = (ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS;
+ printf("\n\t\ttopology %s(%u) metric %d",
+ tok2str(ospf_topology_values, "", topology),
+ topology,
+ ul & SLA_MASK_METRIC);
++lp;
}
break;
TCHECK(almp->asla_tosmetric);
ul = EXTRACT_32BITS(&almp->asla_tosmetric);
- printf(", type %d, tos %d metric:",
- (ul & ASLA_FLAG_EXTERNAL) ? 2 : 1,
- (ul & ASLA_MASK_TOS) >> ASLA_SHIFT_TOS);
+ topology = ((ul & ASLA_MASK_TOS) >> ASLA_SHIFT_TOS);
+ printf("\n\t\ttopology %s(%u), type %d, metric",
+ tok2str(ospf_topology_values, "", topology),
+ topology,
+ (ul & ASLA_FLAG_EXTERNAL) ? 2 : 1);
if ((ul & ASLA_MASK_METRIC)==0xffffff)
printf(" infinite");
else
ls_length);
return(ls_end);
}
- ls_length-=tlv_length;
TCHECK2(*tptr, tlv_length);
switch(tlv_type) {
}
tptr+=tlv_length;
+ ls_length-=tlv_length;
}
break;
return (NULL);
}
+static int
+ospf_decode_lls(register const struct ospfhdr *op,
+ register u_int length)
+{
+ register const u_char *dptr;
+ register const u_char *dataend;
+ register u_int length2;
+ register u_int16_t lls_type, lls_len;
+ register u_int32_t lls_flags;
+
+ switch (op->ospf_type) {
+
+ case OSPF_TYPE_HELLO:
+ if (!(op->ospf_hello.hello_options & OSPF_OPTION_L))
+ return (0);
+ break;
+
+ case OSPF_TYPE_DD:
+ if (!(op->ospf_db.db_options & OSPF_OPTION_L))
+ return (0);
+ break;
+
+ default:
+ return (0);
+ }
+
+ /* dig deeper if LLS data is available; see RFC4813 */
+ length2 = EXTRACT_16BITS(&op->ospf_len);
+ dptr = (u_char *)op + length2;
+ dataend = (u_char *)op + length;
+
+ if (EXTRACT_16BITS(&op->ospf_authtype) == OSPF_AUTH_MD5) {
+ dptr = dptr + op->ospf_authdata[3];
+ length2 += op->ospf_authdata[3];
+ }
+ if (length2 >= length) {
+ printf("\n\t[LLS truncated]");
+ return (1);
+ }
+ TCHECK2(*dptr, 2);
+ printf("\n\t LLS: checksum: 0x%04x", (u_int)EXTRACT_16BITS(dptr));
+
+ dptr += 2;
+ TCHECK2(*dptr, 2);
+ length2 = EXTRACT_16BITS(dptr);
+ printf(", length: %u", length2);
+
+ dptr += 2;
+ TCHECK(*dptr);
+ while (dptr < dataend) {
+ TCHECK2(*dptr, 2);
+ lls_type = EXTRACT_16BITS(dptr);
+ printf("\n\t %s (%u)",
+ tok2str(ospf_lls_tlv_values,"Unknown TLV",lls_type),
+ lls_type);
+ dptr += 2;
+ TCHECK2(*dptr, 2);
+ lls_len = EXTRACT_16BITS(dptr);
+ printf(", length: %u", lls_len);
+ dptr += 2;
+ switch (lls_type) {
+
+ case OSPF_LLS_EO:
+ if (lls_len != 4) {
+ printf(" [should be 4]");
+ lls_len = 4;
+ }
+ TCHECK2(*dptr, 4);
+ lls_flags = EXTRACT_32BITS(dptr);
+ printf("\n\t Options: 0x%08x [%s]", lls_flags,
+ bittok2str(ospf_lls_eo_options,"?",lls_flags));
+
+ break;
+
+ case OSPF_LLS_MD5:
+ if (lls_len != 20) {
+ printf(" [should be 20]");
+ lls_len = 20;
+ }
+ TCHECK2(*dptr, 4);
+ printf("\n\t Sequence number: 0x%08x", EXTRACT_32BITS(dptr));
+ break;
+ }
+
+ dptr += lls_len;
+ }
+
+ return (0);
+trunc:
+ return (1);
+}
+
static int
ospf_decode_v2(register const struct ospfhdr *op,
register const u_char *dataend)
TCHECK(op->ospf_db.db_flags);
printf(", DD Flags [%s]",
bittok2str(ospf_dd_flag_values,"none",op->ospf_db.db_flags));
+ TCHECK(op->ospf_db.db_ifmtu);
+ if (op->ospf_db.db_ifmtu) {
+ printf(", MTU: %u", EXTRACT_16BITS(&op->ospf_db.db_ifmtu));
+ }
+ TCHECK(op->ospf_db.db_seq);
+ printf(", Sequence: 0x%08x", EXTRACT_32BITS(&op->ospf_db.db_seq));
/* Print all the LS adv's */
lshp = op->ospf_db.db_lshdr;
- while (ospf_print_lshdr(lshp) != -1) {
+ while (((u_char *)lshp < dataend) && ospf_print_lshdr(lshp) != -1) {
++lshp;
}
break;
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" : "");
+ printf(", %d LSA%s",lsa_count_max, PLURAL_SUFFIX(lsa_count_max));
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);
TCHECK(op->ospf_len);
if (length != EXTRACT_16BITS(&op->ospf_len)) {
printf(" [len %d]", EXTRACT_16BITS(&op->ospf_len));
- return;
}
- dataend = bp + length;
+
+ if (length > EXTRACT_16BITS(&op->ospf_len)) {
+ dataend = bp + EXTRACT_16BITS(&op->ospf_len);
+ } else {
+ dataend = bp + length;
+ }
TCHECK(op->ospf_routerid);
printf("\n\tRouter-ID %s", ipaddr_string(&op->ospf_routerid));
/* ospf version 2 */
if (ospf_decode_v2(op, dataend))
goto trunc;
+ if (length > EXTRACT_16BITS(&op->ospf_len)) {
+ if (ospf_decode_lls(op, length))
+ goto trunc;
+ }
break;
default:
projects / tcpdump / blobdiff