*/
-#ifndef lint
-static const char rcsid[] =
- "@(#) $Header: /tcpdump/master/tcpdump/print-ospf.c,v 1.31 2001-06-28 04:34:51 fenner Exp $ (LBL)";
-#endif
+/* \summary: Open Shortest Path First (OSPF) printer */
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+#include <config.h>
-#include <sys/param.h>
-#include <sys/time.h>
-#include <sys/socket.h>
+#include "netdissect-stdinc.h"
-#include <netinet/in.h>
-
-#include <ctype.h>
-#include <stdio.h>
-
-#include "interface.h"
+#include "netdissect.h"
#include "addrtoname.h"
+#include "extract.h"
+#include "gmpls.h"
#include "ospf.h"
-#include "ip.h"
-struct bits {
- u_int32_t bit;
- const char *str;
+static const struct tok ospf_option_values[] = {
+ { OSPF_OPTION_MT, "MultiTopology" }, /* draft-ietf-ospf-mt-09 */
+ { OSPF_OPTION_E, "External" },
+ { OSPF_OPTION_MC, "Multicast" },
+ { OSPF_OPTION_NP, "NSSA" },
+ { OSPF_OPTION_L, "LLS" },
+ { OSPF_OPTION_DC, "Demand Circuit" },
+ { OSPF_OPTION_O, "Opaque" },
+ { OSPF_OPTION_DN, "Up/Down" },
+ { 0, NULL }
};
-static const struct bits ospf_option_bits[] = {
- { OSPF_OPTION_T, "T" },
- { OSPF_OPTION_E, "E" },
- { OSPF_OPTION_MC, "MC" },
+static const struct tok ospf_authtype_values[] = {
+ { OSPF_AUTH_NONE, "none" },
+ { OSPF_AUTH_SIMPLE, "simple" },
+ { OSPF_AUTH_MD5, "MD5" },
{ 0, NULL }
};
-static const struct bits ospf_rla_flag_bits[] = {
- { RLA_FLAG_B, "B" },
- { RLA_FLAG_E, "E" },
- { RLA_FLAG_W1, "W1" },
- { RLA_FLAG_W2, "W2" },
+static const struct tok ospf_rla_flag_values[] = {
+ { RLA_FLAG_B, "ABR" },
+ { RLA_FLAG_E, "ASBR" },
+ { RLA_FLAG_V, "Virtual" },
+ { RLA_FLAG_W, "Wildcard" },
+ { RLA_FLAG_NT, "Nt" },
+ { RLA_FLAG_H, "Host" },
{ 0, NULL }
};
-static struct tok type2str[] = {
- { OSPF_TYPE_UMD, "umd" },
- { OSPF_TYPE_HELLO, "hello" },
- { OSPF_TYPE_DB, "dd" },
- { OSPF_TYPE_LSR, "ls_req" },
- { OSPF_TYPE_LSU, "ls_upd" },
- { OSPF_TYPE_LSA, "ls_ack" },
+static const struct tok type2str[] = {
+ { OSPF_TYPE_HELLO, "Hello" },
+ { OSPF_TYPE_DD, "Database Description" },
+ { OSPF_TYPE_LS_REQ, "LS-Request" },
+ { OSPF_TYPE_LS_UPDATE, "LS-Update" },
+ { OSPF_TYPE_LS_ACK, "LS-Ack" },
{ 0, NULL }
};
-static char tstr[] = " [|ospf]";
+static const struct tok lsa_values[] = {
+ { LS_TYPE_ROUTER, "Router" },
+ { LS_TYPE_NETWORK, "Network" },
+ { LS_TYPE_SUM_IP, "Summary" },
+ { LS_TYPE_SUM_ABR, "ASBR Summary" },
+ { LS_TYPE_ASE, "External" },
+ { LS_TYPE_GROUP, "Multicast Group" },
+ { LS_TYPE_NSSA, "NSSA" },
+ { LS_TYPE_OPAQUE_LL, "Link Local Opaque" },
+ { LS_TYPE_OPAQUE_AL, "Area Local Opaque" },
+ { LS_TYPE_OPAQUE_DW, "Domain Wide Opaque" },
+ { 0, NULL }
+};
-/* Forwards */
-static inline void ospf_print_seqage(u_int32_t, time_t);
-static inline void ospf_print_bits(const struct bits *, u_char);
-static void ospf_print_ls_type(u_int, const struct in_addr *,
- const struct in_addr *, const char *);
-static int ospf_print_lshdr(const struct lsa_hdr *);
-static int ospf_print_lsa(const struct lsa *);
-static int ospf_decode_v2(const struct ospfhdr *, const u_char *);
+static const struct tok ospf_dd_flag_values[] = {
+ { OSPF_DB_INIT, "Init" },
+ { OSPF_DB_MORE, "More" },
+ { OSPF_DB_MASTER, "Master" },
+ { OSPF_DB_RESYNC, "OOBResync" },
+ { 0, NULL }
+};
-static inline void
-ospf_print_seqage(register u_int32_t seq, register time_t us)
-{
- register time_t sec = us % 60;
- register time_t mins = (us / 60) % 60;
- register time_t hour = us / 3600;
-
- printf(" S %X age ", seq);
- if (hour)
- printf("%u:%02u:%02u",
- (u_int32_t) hour, (u_int32_t) mins, (u_int32_t) sec);
- else if (mins)
- printf("%u:%02u", (u_int32_t) mins, (u_int32_t) sec);
- else
- printf("%u", (u_int32_t) sec);
-}
+static const struct tok lsa_opaque_values[] = {
+ { LS_OPAQUE_TYPE_TE, "Traffic Engineering" },
+ { LS_OPAQUE_TYPE_GRACE, "Graceful restart" },
+ { LS_OPAQUE_TYPE_RI, "Router Information" },
+ { 0, NULL }
+};
+static const struct tok lsa_opaque_te_tlv_values[] = {
+ { LS_OPAQUE_TE_TLV_ROUTER, "Router Address" },
+ { LS_OPAQUE_TE_TLV_LINK, "Link" },
+ { 0, NULL }
+};
-static inline void
-ospf_print_bits(register const struct bits *bp, register u_char options)
-{
- register char sep = ' ';
+static const struct tok lsa_opaque_te_link_tlv_subtlv_values[] = {
+ { LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE, "Link Type" },
+ { LS_OPAQUE_TE_LINK_SUBTLV_LINK_ID, "Link ID" },
+ { LS_OPAQUE_TE_LINK_SUBTLV_LOCAL_IP, "Local Interface IP address" },
+ { LS_OPAQUE_TE_LINK_SUBTLV_REMOTE_IP, "Remote Interface IP address" },
+ { LS_OPAQUE_TE_LINK_SUBTLV_TE_METRIC, "Traffic Engineering Metric" },
+ { LS_OPAQUE_TE_LINK_SUBTLV_MAX_BW, "Maximum Bandwidth" },
+ { LS_OPAQUE_TE_LINK_SUBTLV_MAX_RES_BW, "Maximum Reservable Bandwidth" },
+ { LS_OPAQUE_TE_LINK_SUBTLV_UNRES_BW, "Unreserved Bandwidth" },
+ { LS_OPAQUE_TE_LINK_SUBTLV_ADMIN_GROUP, "Administrative Group" },
+ { LS_OPAQUE_TE_LINK_SUBTLV_LINK_LOCAL_REMOTE_ID, "Link Local/Remote Identifier" },
+ { LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE, "Link Protection Type" },
+ { LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR, "Interface Switching Capability" },
+ { LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP, "Shared Risk Link Group" },
+ { LS_OPAQUE_TE_LINK_SUBTLV_BW_CONSTRAINTS, "Bandwidth Constraints" },
+ { 0, NULL }
+};
- do {
- if (options & bp->bit) {
- printf("%c%s", sep, bp->str);
- sep = '/';
- }
- } while ((++bp)->bit);
-}
+static const struct tok lsa_opaque_grace_tlv_values[] = {
+ { LS_OPAQUE_GRACE_TLV_PERIOD, "Grace Period" },
+ { LS_OPAQUE_GRACE_TLV_REASON, "Graceful restart Reason" },
+ { LS_OPAQUE_GRACE_TLV_INT_ADDRESS, "IPv4 interface address" },
+ { 0, NULL }
+};
-static void
-ospf_print_ls_type(register u_int ls_type,
- register const struct in_addr *ls_stateid,
- register const struct in_addr *ls_router, register const char *fmt)
+static const struct tok lsa_opaque_grace_tlv_reason_values[] = {
+ { LS_OPAQUE_GRACE_TLV_REASON_UNKNOWN, "Unknown" },
+ { LS_OPAQUE_GRACE_TLV_REASON_SW_RESTART, "Software Restart" },
+ { LS_OPAQUE_GRACE_TLV_REASON_SW_UPGRADE, "Software Reload/Upgrade" },
+ { LS_OPAQUE_GRACE_TLV_REASON_CP_SWITCH, "Control Processor Switch" },
+ { 0, NULL }
+};
+
+static const struct tok lsa_opaque_te_tlv_link_type_sub_tlv_values[] = {
+ { LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_PTP, "Point-to-point" },
+ { LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_MA, "Multi-Access" },
+ { 0, NULL }
+};
+
+static const struct tok lsa_opaque_ri_tlv_values[] = {
+ { LS_OPAQUE_RI_TLV_CAP, "Router Capabilities" },
+ { 0, NULL }
+};
+
+static const struct tok lsa_opaque_ri_tlv_cap_values[] = {
+ { 1, "Reserved" },
+ { 2, "Reserved" },
+ { 4, "Reserved" },
+ { 8, "Reserved" },
+ { 16, "graceful restart capable" },
+ { 32, "graceful restart helper" },
+ { 64, "Stub router support" },
+ { 128, "Traffic engineering" },
+ { 256, "p2p over LAN" },
+ { 512, "path computation server" },
+ { 0, NULL }
+};
+
+static const struct tok ospf_lls_tlv_values[] = {
+ { OSPF_LLS_EO, "Extended Options" },
+ { OSPF_LLS_MD5, "MD5 Authentication" },
+ { 0, NULL }
+};
+
+static const struct tok ospf_lls_eo_options[] = {
+ { OSPF_LLS_EO_LR, "LSDB resync" },
+ { OSPF_LLS_EO_RS, "Restart" },
+ { 0, NULL }
+};
+
+int
+ospf_grace_lsa_print(netdissect_options *ndo,
+ const u_char *tptr, u_int ls_length)
{
+ u_int tlv_type, tlv_length;
- switch (ls_type) {
- case LS_TYPE_ROUTER:
- printf(" rtr %s ", ipaddr_string(ls_router));
- break;
+ while (ls_length > 0) {
+ ND_TCHECK_4(tptr);
+ if (ls_length < 4) {
+ ND_PRINT("\n\t Remaining LS length %u < 4", ls_length);
+ return -1;
+ }
+ tlv_type = GET_BE_U_2(tptr);
+ tlv_length = GET_BE_U_2(tptr + 2);
+ tptr+=4;
+ ls_length-=4;
+
+ ND_PRINT("\n\t %s TLV (%u), length %u, value: ",
+ tok2str(lsa_opaque_grace_tlv_values,"unknown",tlv_type),
+ tlv_type,
+ tlv_length);
+
+ if (tlv_length > ls_length) {
+ ND_PRINT("\n\t Bogus length %u > %u", tlv_length,
+ ls_length);
+ return -1;
+ }
- case LS_TYPE_NETWORK:
- printf(" net dr %s if %s",
- ipaddr_string(ls_router),
- ipaddr_string(ls_stateid));
- break;
+ /* Infinite loop protection. */
+ if (tlv_type == 0 || tlv_length ==0) {
+ return -1;
+ }
- case LS_TYPE_SUM_IP:
- printf(" sum %s abr %s",
- ipaddr_string(ls_stateid),
- ipaddr_string(ls_router));
- break;
+ ND_TCHECK_LEN(tptr, tlv_length);
+ switch(tlv_type) {
+
+ case LS_OPAQUE_GRACE_TLV_PERIOD:
+ if (tlv_length != 4) {
+ ND_PRINT("\n\t Bogus length %u != 4", tlv_length);
+ return -1;
+ }
+ ND_PRINT("%us", GET_BE_U_4(tptr));
+ break;
+
+ case LS_OPAQUE_GRACE_TLV_REASON:
+ if (tlv_length != 1) {
+ ND_PRINT("\n\t Bogus length %u != 1", tlv_length);
+ return -1;
+ }
+ ND_PRINT("%s (%u)",
+ tok2str(lsa_opaque_grace_tlv_reason_values, "Unknown", GET_U_1(tptr)),
+ GET_U_1(tptr));
+ break;
+
+ case LS_OPAQUE_GRACE_TLV_INT_ADDRESS:
+ if (tlv_length != 4) {
+ ND_PRINT("\n\t Bogus length %u != 4", tlv_length);
+ return -1;
+ }
+ ND_PRINT("%s", GET_IPADDR_STRING(tptr));
+ break;
+
+ default:
+ if (ndo->ndo_vflag <= 1) {
+ if (!print_unknown_data(ndo, tptr, "\n\t ", tlv_length))
+ return -1;
+ }
+ break;
- case LS_TYPE_SUM_ABR:
- printf(" abr %s rtr %s",
- ipaddr_string(ls_router),
- ipaddr_string(ls_stateid));
- break;
+ }
+ /* in OSPF everything has to be 32-bit aligned, including TLVs */
+ if (tlv_length%4 != 0)
+ tlv_length+=4-(tlv_length%4);
+ ls_length-=tlv_length;
+ tptr+=tlv_length;
+ }
+
+ return 0;
+trunc:
+ return -1;
+}
- case LS_TYPE_ASE:
- printf(" ase %s asbr %s",
- ipaddr_string(ls_stateid),
- ipaddr_string(ls_router));
- break;
+int
+ospf_te_lsa_print(netdissect_options *ndo,
+ const u_char *tptr, u_int ls_length)
+{
+ u_int tlv_type, tlv_length, subtlv_type, subtlv_length;
+ u_int priority_level, te_class, count_srlg;
+ union { /* int to float conversion buffer for several subTLVs */
+ float f;
+ uint32_t i;
+ } bw;
+
+ while (ls_length != 0) {
+ ND_TCHECK_4(tptr);
+ if (ls_length < 4) {
+ ND_PRINT("\n\t Remaining LS length %u < 4", ls_length);
+ return -1;
+ }
+ tlv_type = GET_BE_U_2(tptr);
+ tlv_length = GET_BE_U_2(tptr + 2);
+ tptr+=4;
+ ls_length-=4;
+
+ ND_PRINT("\n\t %s TLV (%u), length: %u",
+ tok2str(lsa_opaque_te_tlv_values,"unknown",tlv_type),
+ tlv_type,
+ tlv_length);
+
+ if (tlv_length > ls_length) {
+ ND_PRINT("\n\t Bogus length %u > %u", tlv_length,
+ ls_length);
+ return -1;
+ }
- case LS_TYPE_GROUP:
- printf(" group %s rtr %s",
- ipaddr_string(ls_stateid),
- ipaddr_string(ls_router));
- break;
+ /* Infinite loop protection. */
+ if (tlv_type == 0 || tlv_length ==0) {
+ return -1;
+ }
- default:
- putchar(' ');
- printf(fmt, ls_type);
- break;
- }
+ switch(tlv_type) {
+ case LS_OPAQUE_TE_TLV_LINK:
+ while (tlv_length != 0) {
+ if (tlv_length < 4) {
+ ND_PRINT("\n\t Remaining TLV length %u < 4",
+ tlv_length);
+ return -1;
+ }
+ subtlv_type = GET_BE_U_2(tptr);
+ subtlv_length = GET_BE_U_2(tptr + 2);
+ tptr+=4;
+ tlv_length-=4;
+
+ /* Infinite loop protection */
+ if (subtlv_type == 0 || subtlv_length == 0)
+ goto invalid;
+
+ ND_PRINT("\n\t %s subTLV (%u), length: %u",
+ tok2str(lsa_opaque_te_link_tlv_subtlv_values,"unknown",subtlv_type),
+ subtlv_type,
+ subtlv_length);
+
+ if (tlv_length < subtlv_length) {
+ ND_PRINT("\n\t Remaining TLV length %u < %u",
+ tlv_length + 4, subtlv_length + 4);
+ return -1;
+ }
+ ND_TCHECK_LEN(tptr, subtlv_length);
+ switch(subtlv_type) {
+ case LS_OPAQUE_TE_LINK_SUBTLV_ADMIN_GROUP:
+ if (subtlv_length != 4) {
+ ND_PRINT(" != 4");
+ goto invalid;
+ }
+ ND_PRINT(", 0x%08x", GET_BE_U_4(tptr));
+ break;
+ case LS_OPAQUE_TE_LINK_SUBTLV_LINK_ID:
+ case LS_OPAQUE_TE_LINK_SUBTLV_LINK_LOCAL_REMOTE_ID:
+ if (subtlv_length != 4 && subtlv_length != 8) {
+ ND_PRINT(" != 4 && != 8");
+ goto invalid;
+ }
+ ND_PRINT(", %s (0x%08x)",
+ GET_IPADDR_STRING(tptr),
+ GET_BE_U_4(tptr));
+ if (subtlv_length == 8) /* rfc4203 */
+ ND_PRINT(", %s (0x%08x)",
+ GET_IPADDR_STRING(tptr+4),
+ GET_BE_U_4(tptr + 4));
+ break;
+ case LS_OPAQUE_TE_LINK_SUBTLV_LOCAL_IP:
+ case LS_OPAQUE_TE_LINK_SUBTLV_REMOTE_IP:
+ if (subtlv_length != 4) {
+ ND_PRINT(" != 4");
+ goto invalid;
+ }
+ ND_PRINT(", %s", GET_IPADDR_STRING(tptr));
+ break;
+ case LS_OPAQUE_TE_LINK_SUBTLV_MAX_BW:
+ case LS_OPAQUE_TE_LINK_SUBTLV_MAX_RES_BW:
+ if (subtlv_length != 4) {
+ ND_PRINT(" != 4");
+ goto invalid;
+ }
+ bw.i = GET_BE_U_4(tptr);
+ ND_PRINT(", %.3f Mbps", bw.f * 8 / 1000000);
+ break;
+ case LS_OPAQUE_TE_LINK_SUBTLV_UNRES_BW:
+ if (subtlv_length != 32) {
+ ND_PRINT(" != 32");
+ goto invalid;
+ }
+ for (te_class = 0; te_class < 8; te_class++) {
+ bw.i = GET_BE_U_4(tptr + te_class * 4);
+ ND_PRINT("\n\t\tTE-Class %u: %.3f Mbps",
+ te_class,
+ bw.f * 8 / 1000000);
+ }
+ break;
+ case LS_OPAQUE_TE_LINK_SUBTLV_BW_CONSTRAINTS:
+ if (subtlv_length < 4) {
+ ND_PRINT(" < 4");
+ goto invalid;
+ }
+ /* BC Model Id (1 octet) + Reserved (3 octets) */
+ ND_PRINT("\n\t\tBandwidth Constraints Model ID: %s (%u)",
+ tok2str(diffserv_te_bc_values, "unknown", GET_U_1(tptr)),
+ GET_U_1(tptr));
+ if (subtlv_length % 4 != 0) {
+ ND_PRINT("\n\t\tlength %u != N x 4", subtlv_length);
+ goto invalid;
+ }
+ if (subtlv_length > 36) {
+ ND_PRINT("\n\t\tlength %u > 36", subtlv_length);
+ goto invalid;
+ }
+ /* decode BCs until the subTLV ends */
+ for (te_class = 0; te_class < (subtlv_length-4)/4; te_class++) {
+ bw.i = GET_BE_U_4(tptr + 4 + te_class * 4);
+ ND_PRINT("\n\t\t Bandwidth constraint CT%u: %.3f Mbps",
+ te_class,
+ bw.f * 8 / 1000000);
+ }
+ break;
+ case LS_OPAQUE_TE_LINK_SUBTLV_TE_METRIC:
+ if (subtlv_length != 4) {
+ ND_PRINT(" != 4");
+ goto invalid;
+ }
+ ND_PRINT(", Metric %u", GET_BE_U_4(tptr));
+ break;
+ case LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE:
+ /* Protection Cap (1 octet) + Reserved ((3 octets) */
+ if (subtlv_length != 4) {
+ ND_PRINT(" != 4");
+ goto invalid;
+ }
+ ND_PRINT(", %s",
+ bittok2str(gmpls_link_prot_values, "none", GET_U_1(tptr)));
+ break;
+ case LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR:
+ if (subtlv_length < 36) {
+ ND_PRINT(" < 36");
+ goto invalid;
+ }
+ /* Switching Cap (1 octet) + Encoding (1) + Reserved (2) */
+ ND_PRINT("\n\t\tInterface Switching Capability: %s",
+ tok2str(gmpls_switch_cap_values, "Unknown", GET_U_1((tptr))));
+ ND_PRINT("\n\t\tLSP Encoding: %s\n\t\tMax LSP Bandwidth:",
+ tok2str(gmpls_encoding_values, "Unknown", GET_U_1((tptr + 1))));
+ for (priority_level = 0; priority_level < 8; priority_level++) {
+ bw.i = GET_BE_U_4(tptr + 4 + (priority_level * 4));
+ ND_PRINT("\n\t\t priority level %u: %.3f Mbps",
+ priority_level,
+ bw.f * 8 / 1000000);
+ }
+ break;
+ case LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE:
+ if (subtlv_length != 1) {
+ ND_PRINT(" != 1");
+ goto invalid;
+ }
+ ND_PRINT(", %s (%u)",
+ tok2str(lsa_opaque_te_tlv_link_type_sub_tlv_values,"unknown",GET_U_1(tptr)),
+ GET_U_1(tptr));
+ break;
+
+ case LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP:
+ if (subtlv_length % 4 != 0) {
+ ND_PRINT(" != N x 4");
+ goto invalid;
+ }
+ count_srlg = subtlv_length / 4;
+ if (count_srlg != 0)
+ ND_PRINT("\n\t\t Shared risk group: ");
+ while (count_srlg > 0) {
+ bw.i = GET_BE_U_4(tptr);
+ ND_PRINT("%u", bw.i);
+ tptr+=4;
+ count_srlg--;
+ if (count_srlg > 0)
+ ND_PRINT(", ");
+ }
+ break;
+
+ default:
+ if (ndo->ndo_vflag <= 1) {
+ if (!print_unknown_data(ndo, tptr, "\n\t\t", subtlv_length))
+ return -1;
+ }
+ break;
+ }
+ /* in OSPF everything has to be 32-bit aligned, including subTLVs */
+ if (subtlv_length%4 != 0)
+ subtlv_length+=4-(subtlv_length%4);
+
+ if (tlv_length < subtlv_length) {
+ ND_PRINT("\n\t Remaining TLV length %u < %u",
+ tlv_length + 4, subtlv_length + 4);
+ return -1;
+ }
+ tlv_length-=subtlv_length;
+ tptr+=subtlv_length;
+
+ }
+ break;
+
+ case LS_OPAQUE_TE_TLV_ROUTER:
+ if (tlv_length < 4) {
+ ND_PRINT("\n\t TLV length %u < 4", tlv_length);
+ return -1;
+ }
+ ND_PRINT(", %s", GET_IPADDR_STRING(tptr));
+ break;
+
+ default:
+ if (ndo->ndo_vflag <= 1) {
+ if (!print_unknown_data(ndo, tptr, "\n\t ", tlv_length))
+ return -1;
+ }
+ break;
+ }
+ /* in OSPF everything has to be 32-bit aligned, including TLVs */
+ if (tlv_length%4 != 0)
+ tlv_length+=4-(tlv_length%4);
+ if (tlv_length > ls_length) {
+ ND_PRINT("\n\t Bogus padded length %u > %u", tlv_length,
+ ls_length);
+ return -1;
+ }
+ ls_length-=tlv_length;
+ tptr+=tlv_length;
+ }
+ return 0;
+trunc:
+ return -1;
+invalid:
+ nd_print_invalid(ndo);
+ return -1;
}
static int
-ospf_print_lshdr(register const struct lsa_hdr *lshp)
+ospf_print_lshdr(netdissect_options *ndo,
+ const struct lsa_hdr *lshp)
{
+ u_int ls_type;
+ u_int ls_length;
+
+ 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));
+ return(-1);
+ }
+ 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 lsa_hdr));
+ ls_type = GET_U_1(lshp->ls_type);
+ switch (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:
+ ND_PRINT("\n\t %s LSA (%u), Opaque-Type %s LSA (%u), Opaque-ID %u",
+ tok2str(lsa_values,"unknown",ls_type),
+ ls_type,
+
+ tok2str(lsa_opaque_values,
+ "unknown",
+ GET_U_1(lshp->un_lsa_id.opaque_field.opaque_type)),
+ GET_U_1(lshp->un_lsa_id.opaque_field.opaque_type),
+ GET_BE_U_3(lshp->un_lsa_id.opaque_field.opaque_id)
+
+ );
+ break;
+
+ /* all other LSA types use regular style LSA headers */
+ default:
+ ND_PRINT("\n\t %s LSA (%u), LSA-ID: %s",
+ tok2str(lsa_values,"unknown",ls_type),
+ ls_type,
+ GET_IPADDR_STRING(lshp->un_lsa_id.lsa_id));
+ break;
+ }
+ ND_PRINT("\n\t Options: [%s]",
+ bittok2str(ospf_option_values, "none", GET_U_1(lshp->ls_options)));
- TCHECK(lshp->ls_type);
- printf(" {"); /* } (ctags) */
+ return (ls_length);
+}
- TCHECK(lshp->ls_options);
- ospf_print_bits(ospf_option_bits, lshp->ls_options);
- TCHECK(lshp->ls_seq);
- ospf_print_seqage(ntohl(lshp->ls_seq), ntohs(lshp->ls_age));
- ospf_print_ls_type(lshp->ls_type, &lshp->ls_stateid, &lshp->ls_router,
- "ls_type %d");
+/* draft-ietf-ospf-mt-09 */
+static const struct tok ospf_topology_values[] = {
+ { 0, "default" },
+ { 1, "multicast" },
+ { 2, "management" },
+ { 0, NULL }
+};
- return (0);
-trunc:
- return (1);
+/*
+ * Print all the per-topology metrics.
+ */
+static void
+ospf_print_tos_metrics(netdissect_options *ndo,
+ const union un_tos *tos)
+{
+ u_int metric_count;
+ u_int toscount;
+ u_int tos_type;
+
+ toscount = GET_U_1(tos->link.link_tos_count)+1;
+ metric_count = 0;
+
+ /*
+ * All but the first metric contain a valid topology id.
+ */
+ while (toscount != 0) {
+ tos_type = GET_U_1(tos->metrics.tos_type);
+ ND_PRINT("\n\t\ttopology %s (%u), metric %u",
+ tok2str(ospf_topology_values, "Unknown",
+ metric_count ? tos_type : 0),
+ metric_count ? tos_type : 0,
+ GET_BE_U_2(tos->metrics.tos_metric));
+ metric_count++;
+ tos++;
+ toscount--;
+ }
}
-
/*
- * Print a single link state advertisement. If truncated return 1, else 0.
+ * 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
+ * return pointer to data past end of LSA.
*/
-static int
-ospf_print_lsa(register const struct lsa *lsap)
+static const uint8_t *
+ospf_print_lsa(netdissect_options *ndo,
+ const struct lsa *lsap)
{
- register const u_char *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;
-
- if (ospf_print_lshdr(&lsap->ls_hdr))
- return (1);
- TCHECK(lsap->ls_hdr.ls_length);
- ls_end = (u_char *)lsap + ntohs(lsap->ls_hdr.ls_length);
- switch (lsap->ls_hdr.ls_type) {
+ const uint8_t *ls_end;
+ const struct rlalink *rlp;
+ const nd_ipv4 *ap;
+ const struct aslametric *almp;
+ const struct mcla *mcp;
+ const uint8_t *lp;
+ u_int tlv_type, tlv_length, rla_count, topology;
+ int ospf_print_lshdr_ret;
+ u_int ls_length;
+ const uint8_t *tptr;
+
+ tptr = (const uint8_t *)lsap->lsa_un.un_unknown; /* squelch compiler warnings */
+ ospf_print_lshdr_ret = ospf_print_lshdr(ndo, &lsap->ls_hdr);
+ if (ospf_print_lshdr_ret < 0)
+ return(NULL);
+ ls_length = (u_int)ospf_print_lshdr_ret;
+ ls_end = (const uint8_t *)lsap + ls_length;
+ /*
+ * ospf_print_lshdr() returns -1 if the length is too short,
+ * so we know ls_length is >= sizeof(struct lsa_hdr).
+ */
+ ls_length -= sizeof(struct lsa_hdr);
+
+ switch (GET_U_1(lsap->ls_hdr.ls_type)) {
case LS_TYPE_ROUTER:
- TCHECK(lsap->lsa_un.un_rla.rla_flags);
- ospf_print_bits(ospf_rla_flag_bits,
- lsap->lsa_un.un_rla.rla_flags);
+ ND_PRINT("\n\t Router LSA Options: [%s]",
+ bittok2str(ospf_rla_flag_values, "none", GET_U_1(lsap->lsa_un.un_rla.rla_flags)));
- TCHECK(lsap->lsa_un.un_rla.rla_count);
- j = ntohs(lsap->lsa_un.un_rla.rla_count);
- TCHECK(lsap->lsa_un.un_rla.rla_link);
+ rla_count = GET_BE_U_2(lsap->lsa_un.un_rla.rla_count);
+ ND_TCHECK_SIZE(lsap->lsa_un.un_rla.rla_link);
rlp = lsap->lsa_un.un_rla.rla_link;
- while (j--) {
- TCHECK(*rlp);
- printf(" {"); /* } (ctags) */
- switch (rlp->link_type) {
+ for (u_int i = rla_count; i != 0; i--) {
+ ND_TCHECK_SIZE(rlp);
+ switch (GET_U_1(rlp->un_tos.link.link_type)) {
case RLA_TYPE_VIRTUAL:
- printf(" virt");
- /* Fall through */
+ ND_PRINT("\n\t Virtual Link: Neighbor Router-ID: %s, Interface Address: %s",
+ GET_IPADDR_STRING(rlp->link_id),
+ GET_IPADDR_STRING(rlp->link_data));
+ break;
case RLA_TYPE_ROUTER:
- printf(" nbrid %s if %s",
- ipaddr_string(&rlp->link_id),
- ipaddr_string(&rlp->link_data));
+ ND_PRINT("\n\t Neighbor Router-ID: %s, Interface Address: %s",
+ GET_IPADDR_STRING(rlp->link_id),
+ GET_IPADDR_STRING(rlp->link_data));
break;
case RLA_TYPE_TRANSIT:
- printf(" dr %s if %s",
- ipaddr_string(&rlp->link_id),
- ipaddr_string(&rlp->link_data));
+ ND_PRINT("\n\t Neighbor Network-ID: %s, Interface Address: %s",
+ GET_IPADDR_STRING(rlp->link_id),
+ GET_IPADDR_STRING(rlp->link_data));
break;
case RLA_TYPE_STUB:
- printf(" net %s mask %s",
- ipaddr_string(&rlp->link_id),
- ipaddr_string(&rlp->link_data));
+ ND_PRINT("\n\t Stub Network: %s, Mask: %s",
+ GET_IPADDR_STRING(rlp->link_id),
+ GET_IPADDR_STRING(rlp->link_data));
break;
default:
- /* { (ctags) */
- printf(" ??RouterLinksType %d?? }",
- rlp->link_type);
- return (0);
- }
- printf(" tos 0 metric %d", ntohs(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,
- ntohs(tosp->tos_metric));
+ ND_PRINT("\n\t Unknown Router Link Type (%u)",
+ GET_U_1(rlp->un_tos.link.link_type));
+ return (ls_end);
}
- /* { (ctags) */
- printf(" }");
- rlp = (struct rlalink *)((u_char *)(rlp + 1) +
- ((rlp->link_toscount) * sizeof(*tosp)));
+
+ ospf_print_tos_metrics(ndo, &rlp->un_tos);
+
+ rlp = (const struct rlalink *)((const u_char *)(rlp + 1) +
+ (GET_U_1(rlp->un_tos.link.link_tos_count) * sizeof(union un_tos)));
}
break;
case LS_TYPE_NETWORK:
- TCHECK(lsap->lsa_un.un_nla.nla_mask);
- printf(" mask %s rtrs",
- ipaddr_string(&lsap->lsa_un.un_nla.nla_mask));
+ ND_PRINT("\n\t Mask %s\n\t Connected Routers:",
+ GET_IPADDR_STRING(lsap->lsa_un.un_nla.nla_mask));
ap = lsap->lsa_un.un_nla.nla_router;
- while ((u_char *)ap < ls_end) {
- TCHECK(*ap);
- printf(" %s", ipaddr_string(ap));
+ while ((const u_char *)ap < ls_end) {
+ ND_PRINT("\n\t %s", GET_IPADDR_STRING(ap));
++ap;
}
break;
case LS_TYPE_SUM_IP:
- TCHECK(lsap->lsa_un.un_nla.nla_mask);
- printf(" mask %s",
- ipaddr_string(&lsap->lsa_un.un_sla.sla_mask));
- /* Fall through */
+ ND_TCHECK_4(lsap->lsa_un.un_nla.nla_mask);
+ ND_PRINT("\n\t Mask %s",
+ GET_IPADDR_STRING(lsap->lsa_un.un_sla.sla_mask));
+ ND_TCHECK_SIZE(lsap->lsa_un.un_sla.sla_tosmetric);
+ lp = (const uint8_t *)lsap->lsa_un.un_sla.sla_tosmetric;
+ while (lp < ls_end) {
+ uint32_t ul;
+
+ ul = GET_BE_U_4(lp);
+ topology = (ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS;
+ ND_PRINT("\n\t\ttopology %s (%u) metric %u",
+ tok2str(ospf_topology_values, "Unknown", topology),
+ topology,
+ ul & SLA_MASK_METRIC);
+ lp += 4;
+ }
+ break;
case LS_TYPE_SUM_ABR:
- TCHECK(lsap->lsa_un.un_sla.sla_tosmetric);
- lp = lsap->lsa_un.un_sla.sla_tosmetric;
- while ((u_char *)lp < ls_end) {
- register u_int32_t ul;
-
- TCHECK(*lp);
- ul = ntohl(*lp);
- printf(" tos %d metric %d",
- (ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS,
- ul & SLA_MASK_METRIC);
- ++lp;
+ ND_TCHECK_SIZE(lsap->lsa_un.un_sla.sla_tosmetric);
+ lp = (const uint8_t *)lsap->lsa_un.un_sla.sla_tosmetric;
+ while (lp < ls_end) {
+ uint32_t ul;
+
+ ul = GET_BE_U_4(lp);
+ topology = (ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS;
+ ND_PRINT("\n\t\ttopology %s (%u) metric %u",
+ tok2str(ospf_topology_values, "Unknown", topology),
+ topology,
+ ul & SLA_MASK_METRIC);
+ lp += 4;
}
break;
case LS_TYPE_ASE:
- TCHECK(lsap->lsa_un.un_nla.nla_mask);
- printf(" mask %s",
- ipaddr_string(&lsap->lsa_un.un_asla.asla_mask));
+ case LS_TYPE_NSSA: /* fall through - those LSAs share the same format */
+ ND_TCHECK_4(lsap->lsa_un.un_nla.nla_mask);
+ ND_PRINT("\n\t Mask %s",
+ GET_IPADDR_STRING(lsap->lsa_un.un_asla.asla_mask));
- TCHECK(lsap->lsa_un.un_sla.sla_tosmetric);
+ ND_TCHECK_SIZE(lsap->lsa_un.un_sla.sla_tosmetric);
almp = lsap->lsa_un.un_asla.asla_metric;
- while ((u_char *)almp < ls_end) {
- register u_int32_t ul;
-
- TCHECK(almp->asla_tosmetric);
- ul = ntohl(almp->asla_tosmetric);
- printf(" type %d tos %d metric %d",
- (ul & ASLA_FLAG_EXTERNAL) ? 2 : 1,
- (ul & ASLA_MASK_TOS) >> ASLA_SHIFT_TOS,
- (ul & ASLA_MASK_METRIC));
- TCHECK(almp->asla_forward);
- if (almp->asla_forward.s_addr) {
- printf(" forward %s",
- ipaddr_string(&almp->asla_forward));
+ while ((const u_char *)almp < ls_end) {
+ uint32_t ul;
+
+ ul = GET_BE_U_4(almp->asla_tosmetric);
+ topology = ((ul & ASLA_MASK_TOS) >> ASLA_SHIFT_TOS);
+ ND_PRINT("\n\t\ttopology %s (%u), type %u, metric",
+ tok2str(ospf_topology_values, "Unknown", topology),
+ topology,
+ (ul & ASLA_FLAG_EXTERNAL) ? 2 : 1);
+ if ((ul & ASLA_MASK_METRIC) == 0xffffff)
+ ND_PRINT(" infinite");
+ else
+ ND_PRINT(" %u", (ul & ASLA_MASK_METRIC));
+
+ if (GET_IPV4_TO_NETWORK_ORDER(almp->asla_forward) != 0) {
+ ND_PRINT(", forward %s", GET_IPADDR_STRING(almp->asla_forward));
}
- TCHECK(almp->asla_tag);
- if (almp->asla_tag.s_addr) {
- printf(" tag %s",
- ipaddr_string(&almp->asla_tag));
+ if (GET_IPV4_TO_NETWORK_ORDER(almp->asla_tag) != 0) {
+ ND_PRINT(", tag %s", GET_IPADDR_STRING(almp->asla_tag));
}
++almp;
}
case LS_TYPE_GROUP:
/* Multicast extensions as of 23 July 1991 */
mcp = lsap->lsa_un.un_mcla;
- while ((u_char *)mcp < ls_end) {
- TCHECK(mcp->mcla_vid);
- switch (ntohl(mcp->mcla_vtype)) {
+ while ((const u_char *)mcp < ls_end) {
+ switch (GET_BE_U_4(mcp->mcla_vtype)) {
case MCLA_VERTEX_ROUTER:
- printf(" rtr rtrid %s",
- ipaddr_string(&mcp->mcla_vid));
+ ND_PRINT("\n\t Router Router-ID %s",
+ GET_IPADDR_STRING(mcp->mcla_vid));
break;
case MCLA_VERTEX_NETWORK:
- printf(" net dr %s",
- ipaddr_string(&mcp->mcla_vid));
+ ND_PRINT("\n\t Network Designated Router %s",
+ GET_IPADDR_STRING(mcp->mcla_vid));
break;
default:
- printf(" ??VertexType %u??",
- (u_int32_t)ntohl(mcp->mcla_vtype));
+ ND_PRINT("\n\t unknown VertexType (%u)",
+ GET_BE_U_4(mcp->mcla_vtype));
break;
}
++mcp;
}
- }
+ break;
- /* { (ctags) */
- fputs(" }", stdout);
- return (0);
+ case LS_TYPE_OPAQUE_LL: /* fall through */
+ case LS_TYPE_OPAQUE_AL:
+ case LS_TYPE_OPAQUE_DW:
+
+ switch (GET_U_1(lsap->ls_hdr.un_lsa_id.opaque_field.opaque_type)) {
+ case LS_OPAQUE_TYPE_RI:
+ tptr = (const uint8_t *)(lsap->lsa_un.un_ri_tlv);
+
+ u_int ls_length_remaining = ls_length;
+ while (ls_length_remaining != 0) {
+ ND_TCHECK_4(tptr);
+ if (ls_length_remaining < 4) {
+ ND_PRINT("\n\t Remaining LS length %u < 4", ls_length_remaining);
+ return(ls_end);
+ }
+ tlv_type = GET_BE_U_2(tptr);
+ tlv_length = GET_BE_U_2(tptr + 2);
+ tptr+=4;
+ ls_length_remaining-=4;
+
+ ND_PRINT("\n\t %s TLV (%u), length: %u, value: ",
+ tok2str(lsa_opaque_ri_tlv_values,"unknown",tlv_type),
+ tlv_type,
+ tlv_length);
+
+ if (tlv_length > ls_length_remaining) {
+ ND_PRINT("\n\t Bogus length %u > remaining LS length %u", tlv_length,
+ ls_length_remaining);
+ return(ls_end);
+ }
+ ND_TCHECK_LEN(tptr, tlv_length);
+ switch(tlv_type) {
+
+ case LS_OPAQUE_RI_TLV_CAP:
+ if (tlv_length != 4) {
+ ND_PRINT("\n\t Bogus length %u != 4", tlv_length);
+ return(ls_end);
+ }
+ ND_PRINT("Capabilities: %s",
+ bittok2str(lsa_opaque_ri_tlv_cap_values, "Unknown", GET_BE_U_4(tptr)));
+ break;
+ default:
+ if (ndo->ndo_vflag <= 1) {
+ if (!print_unknown_data(ndo, tptr, "\n\t ", tlv_length))
+ return(ls_end);
+ }
+ break;
+
+ }
+
+ /* in OSPF everything has to be 32-bit aligned, including TLVs */
+ if (tlv_length % 4) {
+ tlv_length += (4 - (tlv_length % 4));
+ }
+ tptr+=tlv_length;
+ ls_length_remaining-=tlv_length;
+ }
+ break;
+
+ case LS_OPAQUE_TYPE_GRACE:
+ if (ospf_grace_lsa_print(ndo, (const u_char *)(lsap->lsa_un.un_grace_tlv),
+ ls_length) == -1) {
+ return(ls_end);
+ }
+ break;
+
+ case LS_OPAQUE_TYPE_TE:
+ if (ospf_te_lsa_print(ndo, (const u_char *)(lsap->lsa_un.un_te_lsa_tlv),
+ ls_length) == -1) {
+ return(ls_end);
+ }
+ break;
+
+ default:
+ if (ndo->ndo_vflag <= 1) {
+ if (!print_unknown_data(ndo, (const uint8_t *)lsap->lsa_un.un_unknown,
+ "\n\t ", ls_length))
+ return(ls_end);
+ }
+ break;
+ }
+ }
+
+ /* do we want to see an additionally hexdump ? */
+ if (ndo->ndo_vflag> 1)
+ if (!print_unknown_data(ndo, (const uint8_t *)lsap->lsa_un.un_unknown,
+ "\n\t ", ls_length)) {
+ return(ls_end);
+ }
+
+ return (ls_end);
trunc:
- fputs(" }", stdout);
- return (1);
+ return (NULL);
+}
+
+static void
+ospf_decode_lls(netdissect_options *ndo,
+ const struct ospfhdr *op, u_int length)
+{
+ const u_char *dptr;
+ const u_char *dataend;
+ u_int length2;
+ uint16_t lls_type, lls_len;
+ uint32_t lls_flags;
+
+ switch (GET_U_1(op->ospf_type)) {
+
+ case OSPF_TYPE_HELLO:
+ if (!(GET_U_1(op->ospf_hello.hello_options) & OSPF_OPTION_L))
+ return;
+ break;
+
+ case OSPF_TYPE_DD:
+ if (!(GET_U_1(op->ospf_db.db_options) & OSPF_OPTION_L))
+ return;
+ break;
+
+ default:
+ return;
+ }
+
+ /* dig deeper if LLS data is available; see RFC4813 */
+ length2 = GET_BE_U_2(op->ospf_len);
+ dptr = (const u_char *)op + length2;
+ dataend = (const u_char *)op + length;
+
+ if (GET_BE_U_2(op->ospf_authtype) == OSPF_AUTH_MD5) {
+ dptr = dptr + GET_U_1(op->ospf_authdata + 3);
+ length2 += GET_U_1(op->ospf_authdata + 3);
+ }
+ if (length2 >= length) {
+ ND_PRINT("\n\t[LLS truncated]");
+ return;
+ }
+ ND_PRINT("\n\t LLS: checksum: 0x%04x", (u_int) GET_BE_U_2(dptr));
+
+ dptr += 2;
+ length2 = GET_BE_U_2(dptr);
+ ND_PRINT(", length: %u", length2);
+
+ dptr += 2;
+ while (dptr < dataend) {
+ lls_type = GET_BE_U_2(dptr);
+ ND_PRINT("\n\t %s (%u)",
+ tok2str(ospf_lls_tlv_values,"Unknown TLV",lls_type),
+ lls_type);
+ dptr += 2;
+ lls_len = GET_BE_U_2(dptr);
+ ND_PRINT(", length: %u", lls_len);
+ dptr += 2;
+ switch (lls_type) {
+
+ case OSPF_LLS_EO:
+ if (lls_len != 4) {
+ ND_PRINT(" [should be 4]");
+ lls_len = 4;
+ }
+ lls_flags = GET_BE_U_4(dptr);
+ ND_PRINT("\n\t Options: 0x%08x [%s]", lls_flags,
+ bittok2str(ospf_lls_eo_options, "?", lls_flags));
+
+ break;
+
+ case OSPF_LLS_MD5:
+ if (lls_len != 20) {
+ ND_PRINT(" [should be 20]");
+ lls_len = 20;
+ }
+ ND_PRINT("\n\t Sequence number: 0x%08x", GET_BE_U_4(dptr));
+ break;
+ }
+
+ dptr += lls_len;
+ }
}
static int
-ospf_decode_v2(register const struct ospfhdr *op,
- register const u_char *dataend)
+ospf_decode_v2(netdissect_options *ndo,
+ const struct ospfhdr *op, 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;
+ const nd_ipv4 *ap;
+ const struct lsr *lsrp;
+ const struct lsa_hdr *lshp;
+ const struct lsa *lsap;
+ uint32_t lsa_count,lsa_count_max;
+
+ switch (GET_U_1(op->ospf_type)) {
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) {
- ap = op->ospf_hello.hello_neighbor;
- if ((u_char *)ap < dataend)
- printf(" nbrs");
- while ((u_char *)ap < dataend) {
- TCHECK(*ap);
- printf(" %s", ipaddr_string(ap));
- ++ap;
- }
+ ND_PRINT("\n\tOptions [%s]",
+ bittok2str(ospf_option_values,"none",GET_U_1(op->ospf_hello.hello_options)));
+
+ ND_PRINT("\n\t Hello Timer %us, Dead Timer %us, Mask %s, Priority %u",
+ GET_BE_U_2(op->ospf_hello.hello_helloint),
+ GET_BE_U_4(op->ospf_hello.hello_deadint),
+ GET_IPADDR_STRING(op->ospf_hello.hello_mask),
+ GET_U_1(op->ospf_hello.hello_priority));
+
+ if (GET_IPV4_TO_NETWORK_ORDER(op->ospf_hello.hello_dr) != 0)
+ ND_PRINT("\n\t Designated Router %s",
+ GET_IPADDR_STRING(op->ospf_hello.hello_dr));
+
+ if (GET_IPV4_TO_NETWORK_ORDER(op->ospf_hello.hello_bdr) != 0)
+ ND_PRINT(", Backup Designated Router %s",
+ GET_IPADDR_STRING(op->ospf_hello.hello_bdr));
+
+ ap = op->ospf_hello.hello_neighbor;
+ if ((const u_char *)ap < dataend)
+ ND_PRINT("\n\t Neighbor List:");
+ while ((const u_char *)ap < dataend) {
+ ND_PRINT("\n\t %s", GET_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 = '/';
+ case OSPF_TYPE_DD:
+ ND_PRINT("\n\tOptions [%s]",
+ bittok2str(ospf_option_values, "none", GET_U_1(op->ospf_db.db_options)));
+ ND_PRINT(", DD Flags [%s]",
+ bittok2str(ospf_dd_flag_values, "none", GET_U_1(op->ospf_db.db_flags)));
+ if (GET_BE_U_2(op->ospf_db.db_ifmtu)) {
+ ND_PRINT(", MTU: %u",
+ GET_BE_U_2(op->ospf_db.db_ifmtu));
}
- if (op->ospf_db.db_flags & OSPF_DB_MASTER) {
- printf("%cMS", sep);
- sep = '/';
- }
- TCHECK(op->ospf_db.db_seq);
- printf(" S %X", (u_int32_t)ntohl(op->ospf_db.db_seq));
-
- if (vflag) {
- /* Print all the LS adv's */
- lshp = op->ospf_db.db_lshdr;
+ ND_PRINT(", Sequence: 0x%08x", GET_BE_U_4(op->ospf_db.db_seq));
- while (!ospf_print_lshdr(lshp)) {
- /* { (ctags) */
- printf(" }");
- ++lshp;
- }
+ /* Print all the LS adv's */
+ lshp = op->ospf_db.db_lshdr;
+ while (((const u_char *)lshp < dataend) && ospf_print_lshdr(ndo, lshp) != -1) {
+ ++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;
- }
- }
+ case OSPF_TYPE_LS_REQ:
+ lsrp = op->ospf_lsr;
+ while ((const u_char *)lsrp < dataend) {
+ ND_TCHECK_SIZE(lsrp);
+
+ ND_PRINT("\n\t Advertising Router: %s, %s LSA (%u)",
+ GET_IPADDR_STRING(lsrp->ls_router),
+ tok2str(lsa_values,"unknown",GET_BE_U_4(lsrp->ls_type)),
+ GET_BE_U_4(lsrp->ls_type));
+
+ switch (GET_BE_U_4(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:
+ ND_PRINT(", Opaque-Type: %s LSA (%u), Opaque-ID: %u",
+ tok2str(lsa_opaque_values, "unknown",GET_U_1(lsrp->un_ls_stateid.opaque_field.opaque_type)),
+ GET_U_1(lsrp->un_ls_stateid.opaque_field.opaque_type),
+ GET_BE_U_3(lsrp->un_ls_stateid.opaque_field.opaque_id));
+ break;
+ default:
+ ND_PRINT(", LSA-ID: %s",
+ GET_IPADDR_STRING(lsrp->un_ls_stateid.ls_stateid));
+ break;
+ }
+
+ ++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));
- }
- }
+ case OSPF_TYPE_LS_UPDATE:
+ lsap = op->ospf_lsu.lsu_lsa;
+ lsa_count_max = GET_BE_U_4(op->ospf_lsu.lsu_count);
+ ND_PRINT(", %u LSA%s", lsa_count_max, PLURAL_SUFFIX(lsa_count_max));
+ for (lsa_count=1;lsa_count <= lsa_count_max;lsa_count++) {
+ ND_PRINT("\n\t LSA #%u", lsa_count);
+ lsap = (const struct lsa *)ospf_print_lsa(ndo, lsap);
+ if (lsap == NULL)
+ goto trunc;
+ }
break;
-
- case OSPF_TYPE_LSA:
- if (vflag) {
- lshp = op->ospf_lsa.lsa_lshdr;
-
- while (!ospf_print_lshdr(lshp)) {
- /* { (ctags) */
- printf(" }");
- ++lshp;
- }
- }
- break;
+ case OSPF_TYPE_LS_ACK:
+ lshp = op->ospf_lsa.lsa_lshdr;
+ while ((const u_char *)lshp < dataend) {
+ ospf_print_lshdr(ndo, lshp);
+ ++lshp;
+ }
+ break;
default:
- printf("v2 type %d", op->ospf_type);
break;
}
return (0);
}
void
-ospf_print(register const u_char *bp, register u_int length,
- register const u_char *bp2)
+ospf_print(netdissect_options *ndo,
+ const u_char *bp, u_int length,
+ const u_char *bp2 _U_)
{
- register const struct ospfhdr *op;
- register const struct ip *ip;
- register const u_char *dataend;
- register const char *cp;
-
- op = (struct ospfhdr *)bp;
- ip = (struct ip *)bp2;
-
- /* XXX Before we do anything else, strip off the MD5 trailer */
- TCHECK(op->ospf_authtype);
- if (ntohs(op->ospf_authtype) == OSPF_AUTH_MD5) {
- length -= OSPF_AUTH_MD5_LEN;
- snapend -= OSPF_AUTH_MD5_LEN;
- }
+ const struct ospfhdr *op;
+ const u_char *dataend;
+ const char *cp;
+
+ ndo->ndo_protocol = "ospf2";
+ op = (const struct ospfhdr *)bp;
+
+ /* XXX Before we do anything else, strip off the MD5 trailer */
+ if (GET_BE_U_2(op->ospf_authtype) == OSPF_AUTH_MD5) {
+ length -= OSPF_AUTH_MD5_LEN;
+ ndo->ndo_snapend -= OSPF_AUTH_MD5_LEN;
+ }
/* If the type is valid translate it, or just print the type */
/* value. If it's not valid, say so and return */
- TCHECK(op->ospf_type);
- cp = tok2str(type2str, "type%d", op->ospf_type);
- printf("OSPFv%d-%s %d:", op->ospf_version, cp, length);
- if (*cp == 't')
+ cp = tok2str(type2str, "unknown LS-type %u", GET_U_1(op->ospf_type));
+ ND_PRINT("OSPFv%u, %s, length %u", GET_U_1(op->ospf_version), cp,
+ length);
+ if (*cp == 'u')
return;
- TCHECK(op->ospf_len);
- if (length != ntohs(op->ospf_len)) {
- printf(" [len %d]", ntohs(op->ospf_len));
+ if (!ndo->ndo_vflag) { /* non verbose - so lets bail out here */
return;
}
- dataend = bp + length;
- /* Print the routerid if it is not the same as the source */
- TCHECK(op->ospf_routerid);
- if (ip->ip_src.s_addr != op->ospf_routerid.s_addr)
- printf(" rtrid %s", ipaddr_string(&op->ospf_routerid));
+ if (length != GET_BE_U_2(op->ospf_len)) {
+ ND_PRINT(" [len %u]", GET_BE_U_2(op->ospf_len));
+ }
+
+ if (length > GET_BE_U_2(op->ospf_len)) {
+ dataend = bp + GET_BE_U_2(op->ospf_len);
+ } else {
+ dataend = bp + length;
+ }
- TCHECK(op->ospf_areaid);
- if (op->ospf_areaid.s_addr != 0)
- printf(" area %s", ipaddr_string(&op->ospf_areaid));
+ ND_PRINT("\n\tRouter-ID %s", GET_IPADDR_STRING(op->ospf_routerid));
+
+ if (GET_IPV4_TO_NETWORK_ORDER(op->ospf_areaid) != 0)
+ ND_PRINT(", Area %s", GET_IPADDR_STRING(op->ospf_areaid));
else
- printf(" backbone");
+ ND_PRINT(", Backbone Area");
- if (vflag) {
+ if (ndo->ndo_vflag) {
/* Print authentication data (should we really do this?) */
- TCHECK2(op->ospf_authdata[0], sizeof(op->ospf_authdata));
- switch (ntohs(op->ospf_authtype)) {
+ ND_TCHECK_LEN(op->ospf_authdata, sizeof(op->ospf_authdata));
+
+ ND_PRINT(", Authentication Type: %s (%u)",
+ tok2str(ospf_authtype_values, "unknown", GET_BE_U_2(op->ospf_authtype)),
+ GET_BE_U_2(op->ospf_authtype));
+
+ switch (GET_BE_U_2(op->ospf_authtype)) {
case OSPF_AUTH_NONE:
break;
case OSPF_AUTH_SIMPLE:
- printf(" auth \"");
- (void)fn_printn(op->ospf_authdata,
- sizeof(op->ospf_authdata), NULL);
- printf("\"");
+ ND_PRINT("\n\tSimple text password: ");
+ nd_printjnp(ndo, op->ospf_authdata, OSPF_AUTH_SIMPLE_LEN);
break;
case OSPF_AUTH_MD5:
- printf(" auth MD5");
+ ND_PRINT("\n\tKey-ID: %u, Auth-Length: %u, Crypto Sequence Number: 0x%08x",
+ GET_U_1(op->ospf_authdata + 2),
+ GET_U_1(op->ospf_authdata + 3),
+ GET_BE_U_4((op->ospf_authdata) + 4));
break;
default:
- printf(" ??authtype-%d??", ntohs(op->ospf_authtype));
return;
}
}
/* Do rest according to version. */
- switch (op->ospf_version) {
+ switch (GET_U_1(op->ospf_version)) {
case 2:
/* ospf version 2 */
- if (ospf_decode_v2(op, dataend))
+ if (ospf_decode_v2(ndo, op, dataend))
goto trunc;
+ if (length > GET_BE_U_2(op->ospf_len))
+ ospf_decode_lls(ndo, op, length);
break;
default:
- printf(" ospf [version %d]", op->ospf_version);
+ ND_PRINT(" ospf [version %u]", GET_U_1(op->ospf_version));
break;
} /* end switch on version */
return;
trunc:
- fputs(tstr, stdout);
+ nd_trunc_longjmp(ndo);
}
projects / tcpdump / blobdiff