/* \summary: IPv6 Open Shortest Path First (OSPFv3) printer */
-#ifdef HAVE_CONFIG_H
#include <config.h>
-#endif
#include "netdissect-stdinc.h"
#define RLA_FLAG_E 0x02
#define RLA_FLAG_V 0x04
#define RLA_FLAG_W 0x08
-#define RLA_FLAG_N 0x10
+#define RLA_FLAG_Nt 0x10
/* lsa_prefix options */
#define LSA_PREFIX_OPT_NU 0x01
#define LSA_PREFIX_OPT_MC 0x04
#define LSA_PREFIX_OPT_P 0x08
#define LSA_PREFIX_OPT_DN 0x10
+#define LSA_PREFIX_OPT_N 0x20
/* sla_tosmetric breakdown */
#define SLA_MASK_TOS 0x7f000000
{ RLA_FLAG_B, "ABR" },
{ RLA_FLAG_E, "External" },
{ RLA_FLAG_V, "Virtual-Link Endpoint" },
- { RLA_FLAG_W, "Wildcard Receiver" },
- { RLA_FLAG_N, "NSSA Translator" },
+ { RLA_FLAG_W, "Deprecated" },
+ { RLA_FLAG_Nt, "NSSA Translator" },
{ 0, NULL }
};
{ LSA_PREFIX_OPT_MC, "Deprecated" },
{ LSA_PREFIX_OPT_P, "Propagate" },
{ LSA_PREFIX_OPT_DN, "Down" },
+ { LSA_PREFIX_OPT_N, "N-bit" },
{ 0, NULL }
};
ls_type & LS_TYPE_MASK,
tok2str(ospf6_ls_scope_values, "Unknown", ls_type & LS_SCOPE_MASK),
ls_type &0x8000 ? ", transitive" : "", /* U-bit */
- GET_IPADDR_STRING((const u_char *)ls_stateid));
+ GET_IPADDR_STRING(ls_stateid));
}
static int
ospf6_print_lshdr(netdissect_options *ndo,
const struct lsa6_hdr *lshp, const u_char *dataend)
{
+ u_int ls_length;
+
if ((const u_char *)(lshp + 1) > dataend)
goto trunc;
- ND_TCHECK_4(lshp->ls_router);
- ND_PRINT("\n\t Advertising Router %s, seq 0x%08x, age %us, length %u",
- GET_IPADDR_STRING(lshp->ls_router),
- GET_BE_U_4(lshp->ls_seq),
- GET_BE_U_2(lshp->ls_age),
- GET_BE_U_2(lshp->ls_length)-(u_int)sizeof(struct lsa6_hdr));
+ ls_length = GET_BE_U_2(lshp->ls_length);
+ if (ls_length < sizeof(struct lsa_hdr)) {
+ ND_PRINT("\n\t Bogus length %u < header (%zu)", ls_length,
+ sizeof(struct lsa_hdr));
+ goto trunc;
+ }
+
+ ND_PRINT("\n\t Advertising Router %s, seq 0x%08x, age %us, length %zu",
+ GET_IPADDR_STRING(lshp->ls_router),
+ GET_BE_U_4(lshp->ls_seq),
+ GET_BE_U_2(lshp->ls_age),
+ ls_length-sizeof(struct lsa6_hdr));
ospf6_print_ls_type(ndo, GET_BE_U_2(lshp->ls_type),
&lshp->ls_stateid);
if (lsa_length < wordlen * 4)
goto trunc;
lsa_length -= wordlen * 4;
- ND_TCHECK_LEN(lsapp->lsa_p_prefix, wordlen * 4);
memset(prefix, 0, sizeof(prefix));
- memcpy(prefix, lsapp->lsa_p_prefix, wordlen * 4);
+ GET_CPY_BYTES(prefix, lsapp->lsa_p_prefix, wordlen * 4);
ND_PRINT("\n\t\t%s/%u", ip6addr_string(ndo, prefix), /* local buffer, not packet data; don't use GET_IP6ADDR_STRING() */
GET_U_1(lsapp->lsa_p_len));
if (GET_U_1(lsapp->lsa_p_opt)) {
if (ospf6_print_lshdr(ndo, &lsap->ls_hdr, dataend))
return (1);
- ND_TCHECK_2(lsap->ls_hdr.ls_length);
length = GET_BE_U_2(lsap->ls_hdr.ls_length);
/*
if (lsa_length < sizeof (lsap->lsa_un.un_rla.rla_options))
return (1);
lsa_length -= sizeof (lsap->lsa_un.un_rla.rla_options);
- ND_TCHECK_4(lsap->lsa_un.un_rla.rla_options);
ND_PRINT("\n\t Options [%s]",
bittok2str(ospf6_option_values, "none",
GET_BE_U_4(lsap->lsa_un.un_rla.rla_options)));
if (lsa_length < sizeof (lsap->lsa_un.un_nla.nla_options))
return (1);
lsa_length -= sizeof (lsap->lsa_un.un_nla.nla_options);
- ND_TCHECK_4(lsap->lsa_un.un_nla.nla_options);
ND_PRINT("\n\t Options [%s]",
bittok2str(ospf6_option_values, "none",
GET_BE_U_4(lsap->lsa_un.un_nla.nla_options)));
if (lsa_length < sizeof (*ap))
return (1);
lsa_length -= sizeof (*ap);
- ND_TCHECK_SIZE(ap);
- ND_PRINT("\n\t\t%s", GET_IPADDR_STRING(*ap));
+ ND_PRINT("\n\t\t%s", GET_IPADDR_STRING(ap));
++ap;
}
break;
if (lsa_length < sizeof (lsap->lsa_un.un_inter_ap.inter_ap_metric))
return (1);
lsa_length -= sizeof (lsap->lsa_un.un_inter_ap.inter_ap_metric);
- ND_TCHECK_4(lsap->lsa_un.un_inter_ap.inter_ap_metric);
ND_PRINT(", metric %u",
GET_BE_U_4(lsap->lsa_un.un_inter_ap.inter_ap_metric) & SLA_MASK_METRIC);
if (lsa_length < sizeof (lsap->lsa_un.un_asla.asla_metric))
return (1);
lsa_length -= sizeof (lsap->lsa_un.un_asla.asla_metric);
- ND_TCHECK_4(lsap->lsa_un.un_asla.asla_metric);
flags32 = GET_BE_U_4(lsap->lsa_un.un_asla.asla_metric);
ND_PRINT("\n\t Flags [%s]",
bittok2str(ospf6_asla_flag_values, "none", flags32));
if (lsa_length < sizeof (nd_ipv6))
return (1);
lsa_length -= sizeof (nd_ipv6);
- ND_TCHECK_16(tptr);
ND_PRINT(" forward %s",
GET_IP6ADDR_STRING(tptr));
tptr += sizeof(nd_ipv6);
if (lsa_length < sizeof (uint32_t))
return (1);
lsa_length -= sizeof (uint32_t);
- ND_TCHECK_4(tptr);
ND_PRINT(" tag %s",
GET_IPADDR_STRING(tptr));
tptr += sizeof(uint32_t);
if (lsa_length < sizeof (uint32_t))
return (1);
lsa_length -= sizeof (uint32_t);
- ND_TCHECK_4(tptr);
ND_PRINT(" RefLSID: %s",
GET_IPADDR_STRING(tptr));
tptr += sizeof(uint32_t);
if (lsa_length < sizeof (llsap->llsa_lladdr) + sizeof (llsap->llsa_nprefix))
return (1);
lsa_length -= sizeof (llsap->llsa_lladdr) + sizeof (llsap->llsa_nprefix);
- ND_TCHECK_4(llsap->llsa_nprefix);
prefixes = GET_BE_U_4(llsap->llsa_nprefix);
ND_PRINT("\n\t Priority %u, Link-local address %s, Prefixes %u:",
GET_U_1(llsap->llsa_priority),
prefixes);
tptr = (const uint8_t *)llsap->llsa_prefix;
- while (prefixes > 0) {
+ while (prefixes != 0) {
bytelen = ospf6_print_lsaprefix(ndo, tptr, lsa_length);
if (bytelen < 0)
goto trunc;
if (lsa_length < sizeof (lsap->lsa_un.un_intra_ap.intra_ap_nprefix))
return (1);
lsa_length -= sizeof (lsap->lsa_un.un_intra_ap.intra_ap_nprefix);
- ND_TCHECK_2(lsap->lsa_un.un_intra_ap.intra_ap_nprefix);
prefixes = GET_BE_U_2(lsap->lsa_un.un_intra_ap.intra_ap_nprefix);
ND_PRINT("\n\t Prefixes %u:", prefixes);
tptr = (const uint8_t *)lsap->lsa_un.un_intra_ap.intra_ap_prefix;
- while (prefixes > 0) {
+ while (prefixes != 0) {
bytelen = ospf6_print_lsaprefix(ndo, tptr, lsa_length);
if (bytelen < 0)
goto trunc;
const struct lsr6 *lsrp;
const struct lsa6_hdr *lshp;
const struct lsa6 *lsap;
- int i;
+ uint32_t i;
switch (GET_U_1(op->ospf6_type)) {
case OSPF_TYPE_HELLO: {
const struct hello6 *hellop = (const struct hello6 *)((const uint8_t *)op + OSPF6HDR_LEN);
- ND_TCHECK_4(hellop->hello_options);
ND_PRINT("\n\tOptions [%s]",
bittok2str(ospf6_option_values, "none",
GET_BE_U_4(hellop->hello_options)));
- ND_TCHECK_2(hellop->hello_deadint);
ND_PRINT("\n\t Hello Timer %us, Dead Timer %us, Interface-ID %s, Priority %u",
GET_BE_U_2(hellop->hello_helloint),
GET_BE_U_2(hellop->hello_deadint),
GET_IPADDR_STRING(hellop->hello_ifid),
GET_U_1(hellop->hello_priority));
- ND_TCHECK_4(hellop->hello_dr);
if (GET_BE_U_4(hellop->hello_dr) != 0)
ND_PRINT("\n\t Designated Router %s",
GET_IPADDR_STRING(hellop->hello_dr));
- ND_TCHECK_4(hellop->hello_bdr);
if (GET_BE_U_4(hellop->hello_bdr) != 0)
ND_PRINT(", Backup Designated Router %s",
GET_IPADDR_STRING(hellop->hello_bdr));
ND_PRINT("\n\t Neighbor List:");
ap = hellop->hello_neighbor;
while ((const u_char *)ap < dataend) {
- ND_TCHECK_SIZE(ap);
- ND_PRINT("\n\t %s", GET_IPADDR_STRING(*ap));
+ ND_PRINT("\n\t %s", GET_IPADDR_STRING(ap));
++ap;
}
}
case OSPF_TYPE_DD: {
const struct dd6 *ddp = (const struct dd6 *)((const uint8_t *)op + OSPF6HDR_LEN);
- ND_TCHECK_4(ddp->db_options);
ND_PRINT("\n\tOptions [%s]",
bittok2str(ospf6_option_values, "none",
GET_BE_U_4(ddp->db_options)));
- ND_TCHECK_1(ddp->db_flags);
ND_PRINT(", DD Flags [%s]",
bittok2str(ospf6_dd_flag_values,"none",GET_U_1(ddp->db_flags)));
- ND_TCHECK_4(ddp->db_seq);
ND_PRINT(", MTU %u, DD-Sequence 0x%08x",
GET_BE_U_2(ddp->db_mtu),
GET_BE_U_4(ddp->db_seq));
if (ndo->ndo_vflag > 1) {
const struct lsu6 *lsup = (const struct lsu6 *)((const uint8_t *)op + OSPF6HDR_LEN);
- ND_TCHECK_4(lsup->lsu_count);
i = GET_BE_U_4(lsup->lsu_count);
lsap = lsup->lsu_lsa;
while ((const u_char *)lsap < dataend && i--) {
if (len < OSPF_LLS_HDRLEN)
goto trunc;
/* Checksum */
- ND_TCHECK_2(cp);
ND_PRINT("\n\tLLS Checksum 0x%04x", GET_BE_U_2(cp));
cp += 2;
/* LLS Data Length */
- ND_TCHECK_2(cp);
llsdatalen = GET_BE_U_2(cp);
ND_PRINT(", Data Length %u", llsdatalen);
if (llsdatalen < OSPF_LLS_HDRLEN || llsdatalen > len)
if (len < OSPF6_AT_HDRLEN)
goto trunc;
/* Authentication Type */
- ND_TCHECK_2(cp);
ND_PRINT("\n\tAuthentication Type %s",
tok2str(ospf6_auth_type_str, "unknown (0x%04x)", GET_BE_U_2(cp)));
cp += 2;
/* Auth Data Len */
- ND_TCHECK_2(cp);
authdatalen = GET_BE_U_2(cp);
ND_PRINT(", Length %u", authdatalen);
if (authdatalen < OSPF6_AT_HDRLEN || authdatalen > len)
goto trunc;
cp += 2;
/* Reserved */
- ND_TCHECK_2(cp);
cp += 2;
/* Security Association ID */
- ND_TCHECK_2(cp);
ND_PRINT(", SAID %u", GET_BE_U_2(cp));
cp += 2;
/* Cryptographic Sequence Number (High-Order 32 Bits) */
- ND_TCHECK_4(cp);
ND_PRINT(", CSN 0x%08x", GET_BE_U_4(cp));
cp += 4;
/* Cryptographic Sequence Number (Low-Order 32 Bits) */
- ND_TCHECK_4(cp);
ND_PRINT(":%08x", GET_BE_U_4(cp));
cp += 4;
/* Authentication Data */
type = GET_U_1(op->ospf6_type);
if (type == OSPF_TYPE_HELLO) {
const struct hello6 *hellop = (const struct hello6 *)((const uint8_t *)op + OSPF6HDR_LEN);
- ND_TCHECK_4(hellop->hello_options);
if (GET_BE_U_4(hellop->hello_options) & OSPF6_OPTION_L)
lls_hello = 1;
} else if (type == OSPF_TYPE_DD) {
const struct dd6 *ddp = (const struct dd6 *)((const uint8_t *)op + OSPF6HDR_LEN);
- ND_TCHECK_4(ddp->db_options);
if (GET_BE_U_4(ddp->db_options) & OSPF6_OPTION_L)
lls_dd = 1;
}
/* If the type is valid translate it, or just print the type */
/* value. If it's not valid, say so and return */
- ND_TCHECK_1(op->ospf6_type);
cp = tok2str(ospf6_type_values, "unknown packet type (%u)",
GET_U_1(op->ospf6_type));
ND_PRINT("OSPFv%u, %s, length %u", GET_U_1(op->ospf6_version), cp,
}
/* OSPFv3 data always comes first and optional trailing data may follow. */
- ND_TCHECK_2(op->ospf6_len);
datalen = GET_BE_U_2(op->ospf6_len);
if (datalen > length) {
ND_PRINT(" [len %u]", datalen);
}
dataend = bp + datalen;
- ND_TCHECK_4(op->ospf6_routerid);
ND_PRINT("\n\tRouter-ID %s", GET_IPADDR_STRING(op->ospf6_routerid));
- ND_TCHECK_4(op->ospf6_areaid);
if (GET_BE_U_4(op->ospf6_areaid) != 0)
ND_PRINT(", Area %s", GET_IPADDR_STRING(op->ospf6_areaid));
else
ND_PRINT(", Backbone Area");
- ND_TCHECK_1(op->ospf6_instanceid);
if (GET_U_1(op->ospf6_instanceid))
ND_PRINT(", Instance %u", GET_U_1(op->ospf6_instanceid));
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