X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/c1fa2c99cc0099a655ca175630181b2594b2b32a..b116cd9ac44b940cdda9493bb77e81ea42f1db7d:/print-ospf.c diff --git a/print-ospf.c b/print-ospf.c index eaf0bb3e..44904964 100644 --- a/print-ospf.c +++ b/print-ospf.c @@ -22,8 +22,8 @@ */ #ifndef lint -static const char rcsid[] = - "@(#) $Header: /tcpdump/master/tcpdump/print-ospf.c,v 1.38 2003-10-03 13:00:33 hannes Exp $ (LBL)"; +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/tcpdump/print-ospf.c,v 1.66 2007-10-08 07:53:21 hannes Exp $ (LBL)"; #endif #ifdef HAVE_CONFIG_H @@ -37,25 +37,27 @@ static const char rcsid[] = #include "interface.h" #include "addrtoname.h" #include "extract.h" +#include "gmpls.h" #include "ospf.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" }, { 0, NULL } }; static struct tok ospf_authtype_values[] = { { OSPF_AUTH_NONE, "none" }, - { OSPF_AUTH_NONE, "simple" }, + { OSPF_AUTH_SIMPLE, "simple" }, { OSPF_AUTH_MD5, "MD5" }, { 0, NULL } }; @@ -96,93 +98,492 @@ static 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 char tstr[] = " [|ospf]"; +static 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 struct tok lsa_opaque_te_tlv_values[] = { + { LS_OPAQUE_TE_TLV_ROUTER, "Router Address" }, + { LS_OPAQUE_TE_TLV_LINK, "Link" }, + { 0, NULL } +}; + +static 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 } +}; + +static 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 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 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 struct tok lsa_opaque_ri_tlv_values[] = { + { LS_OPAQUE_RI_TLV_CAP, "Router Capabilities" }, + { 0, NULL } +}; + +static 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 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 #define inline __inline #endif /* WIN32 */ static int ospf_print_lshdr(const struct lsa_hdr *); -static int ospf_print_lsa(const struct lsa *); +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); -static int -ospf_print_lshdr(register const struct lsa_hdr *lshp) { +int +ospf_print_grace_lsa (u_int8_t *tptr, u_int ls_length) { - TCHECK(lshp->ls_type); - TCHECK(lshp->ls_options); + u_int tlv_type, tlv_length; - printf("\n\t %s LSA (%d), LSA-ID: %s, Advertising Router: %s, seq 0x%08x, age %us", - tok2str(lsa_values,"unknown",lshp->ls_type), - lshp->ls_type, - ipaddr_string(&lshp->ls_stateid), - ipaddr_string(&lshp->ls_router), - EXTRACT_32BITS(&lshp->ls_seq), - EXTRACT_16BITS(&lshp->ls_age)); - printf("\n\t Options: %s", bittok2str(ospf_option_values,"none",lshp->ls_options)); -return (0); + while (ls_length > 0) { + TCHECK2(*tptr, 4); + if (ls_length < 4) { + printf("\n\t Remaining LS length %u < 4", ls_length); + return -1; + } + tlv_type = EXTRACT_16BITS(tptr); + tlv_length = EXTRACT_16BITS(tptr+2); + tptr+=4; + ls_length-=4; + + printf("\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) { + printf("\n\t Bogus length %u > %u", tlv_length, + ls_length); + return -1; + } + + /* Infinite loop protection. */ + if (tlv_type == 0 || tlv_length ==0) { + return -1; + } + + TCHECK2(*tptr, tlv_length); + switch(tlv_type) { + + case LS_OPAQUE_GRACE_TLV_PERIOD: + if (tlv_length != 4) { + printf("\n\t Bogus length %u != 4", tlv_length); + return -1; + } + printf("%us",EXTRACT_32BITS(tptr)); + break; + + case LS_OPAQUE_GRACE_TLV_REASON: + if (tlv_length != 1) { + printf("\n\t Bogus length %u != 1", tlv_length); + return -1; + } + printf("%s (%u)", + tok2str(lsa_opaque_grace_tlv_reason_values, "Unknown", *tptr), + *tptr); + break; + + case LS_OPAQUE_GRACE_TLV_INT_ADDRESS: + if (tlv_length != 4) { + printf("\n\t Bogus length %u != 4", tlv_length); + return -1; + } + printf("%s", ipaddr_string(tptr)); + break; + + default: + if (vflag <= 1) { + if(!print_unknown_data(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); + ls_length-=tlv_length; + tptr+=tlv_length; + } + + return 0; trunc: - return (1); + return -1; } -/* - * Print a single link state advertisement. If truncated return 1, else 0. - */ +int +ospf_print_te_lsa (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; + union { /* int to float conversion buffer for several subTLVs */ + float f; + u_int32_t i; + } bw; + + while (ls_length != 0) { + TCHECK2(*tptr, 4); + if (ls_length < 4) { + printf("\n\t Remaining LS length %u < 4", ls_length); + return -1; + } + tlv_type = EXTRACT_16BITS(tptr); + tlv_length = EXTRACT_16BITS(tptr+2); + tptr+=4; + ls_length-=4; + + printf("\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) { + printf("\n\t Bogus length %u > %u", tlv_length, + ls_length); + return -1; + } + + /* Infinite loop protection. */ + if (tlv_type == 0 || tlv_length ==0) { + return -1; + } + + switch(tlv_type) { + case LS_OPAQUE_TE_TLV_LINK: + while (tlv_length >= sizeof(subtlv_type) + sizeof(subtlv_length)) { + if (tlv_length < 4) { + printf("\n\t Remaining TLV length %u < 4", + tlv_length); + return -1; + } + TCHECK2(*tptr, 4); + subtlv_type = EXTRACT_16BITS(tptr); + subtlv_length = EXTRACT_16BITS(tptr+2); + tptr+=4; + tlv_length-=4; + + printf("\n\t %s subTLV (%u), length: %u", + tok2str(lsa_opaque_te_link_tlv_subtlv_values,"unknown",subtlv_type), + subtlv_type, + subtlv_length); + + TCHECK2(*tptr, subtlv_length); + switch(subtlv_type) { + case LS_OPAQUE_TE_LINK_SUBTLV_ADMIN_GROUP: + printf(", 0x%08x", EXTRACT_32BITS(tptr)); + break; + case LS_OPAQUE_TE_LINK_SUBTLV_LINK_ID: + case LS_OPAQUE_TE_LINK_SUBTLV_LINK_LOCAL_REMOTE_ID: + printf(", %s (0x%08x)", + ipaddr_string(tptr), + EXTRACT_32BITS(tptr)); + if (subtlv_length == 8) /* rfc4203 */ + printf(", %s (0x%08x)", + ipaddr_string(tptr+4), + EXTRACT_32BITS(tptr+4)); + break; + case LS_OPAQUE_TE_LINK_SUBTLV_LOCAL_IP: + case LS_OPAQUE_TE_LINK_SUBTLV_REMOTE_IP: + printf(", %s", ipaddr_string(tptr)); + break; + case LS_OPAQUE_TE_LINK_SUBTLV_MAX_BW: + case LS_OPAQUE_TE_LINK_SUBTLV_MAX_RES_BW: + bw.i = EXTRACT_32BITS(tptr); + printf(", %.3f Mbps", bw.f*8/1000000 ); + break; + case LS_OPAQUE_TE_LINK_SUBTLV_UNRES_BW: + for (te_class = 0; te_class < 8; te_class++) { + bw.i = EXTRACT_32BITS(tptr+te_class*4); + printf("\n\t\tTE-Class %u: %.3f Mbps", + te_class, + bw.f*8/1000000 ); + } + break; + case LS_OPAQUE_TE_LINK_SUBTLV_BW_CONSTRAINTS: + printf("\n\t\tBandwidth Constraints Model ID: %s (%u)", + tok2str(diffserv_te_bc_values, "unknown", *tptr), + *tptr); + /* decode BCs until the subTLV ends */ + for (te_class = 0; te_class < (subtlv_length-4)/4; te_class++) { + bw.i = EXTRACT_32BITS(tptr+4+te_class*4); + printf("\n\t\t Bandwidth constraint CT%u: %.3f Mbps", + te_class, + bw.f*8/1000000 ); + } + break; + case LS_OPAQUE_TE_LINK_SUBTLV_TE_METRIC: + printf(", Metric %u", EXTRACT_32BITS(tptr)); + break; + case LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE: + printf(", %s, Priority %u", + bittok2str(gmpls_link_prot_values, "none", *tptr), + *(tptr+1)); + break; + case LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR: + printf("\n\t\tInterface Switching Capability: %s", + tok2str(gmpls_switch_cap_values, "Unknown", *(tptr))); + printf("\n\t\tLSP Encoding: %s\n\t\tMax LSP Bandwidth:", + tok2str(gmpls_encoding_values, "Unknown", *(tptr+1))); + for (priority_level = 0; priority_level < 8; priority_level++) { + bw.i = EXTRACT_32BITS(tptr+4+(priority_level*4)); + printf("\n\t\t priority level %d: %.3f Mbps", + priority_level, + bw.f*8/1000000 ); + } + break; + case LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE: + printf(", %s (%u)", + tok2str(lsa_opaque_te_tlv_link_type_sub_tlv_values,"unknown",*tptr), + *tptr); + break; + + case LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP: + count_srlg = subtlv_length / 4; + if (count_srlg != 0) + printf("\n\t\t Shared risk group: "); + while (count_srlg > 0) { + bw.i = EXTRACT_32BITS(tptr); + printf("%d",bw.i); + tptr+=4; + count_srlg--; + if (count_srlg > 0) + printf(", "); + } + break; + + default: + if (vflag <= 1) { + if(!print_unknown_data(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); + + tlv_length-=subtlv_length; + tptr+=subtlv_length; + + } + break; + + case LS_OPAQUE_TE_TLV_ROUTER: + if (tlv_length < 4) { + printf("\n\t TLV length %u < 4", tlv_length); + return -1; + } + TCHECK2(*tptr, 4); + printf(", %s", ipaddr_string(tptr)); + break; + + default: + if (vflag <= 1) { + if(!print_unknown_data(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); + ls_length-=tlv_length; + tptr+=tlv_length; + } + return 0; +trunc: + return -1; +} + + static int -ospf_print_lsa(register const struct lsa *lsap) +ospf_print_lshdr(register const struct lsa_hdr *lshp) { - 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; + u_int ls_length; + + TCHECK(lshp->ls_length); + ls_length = EXTRACT_16BITS(&lshp->ls_length); + if (ls_length < sizeof(struct lsa_hdr)) { + printf("\n\t Bogus length %u < header (%lu)", ls_length, + (unsigned long)sizeof(struct lsa_hdr)); + return(-1); + } - switch (lsap->ls_hdr.ls_type) { + TCHECK(lshp->ls_seq); /* XXX - ls_length check checked this */ + printf("\n\t Advertising Router %s, seq 0x%08x, age %us, length %u", + ipaddr_string(&lshp->ls_router), + EXTRACT_32BITS(&lshp->ls_seq), + EXTRACT_16BITS(&lshp->ls_age), + ls_length-(u_int)sizeof(struct lsa_hdr)); + TCHECK(lshp->ls_type); /* XXX - ls_length check checked this */ + switch (lshp->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("\n\t %s LSA (%d), Opaque-Type: %u, Opaque-ID: %u, Adv. Router: %s, seq 0x%08x, age %us", - tok2str(lsa_values,"unknown",lsap->ls_hdr.ls_type), - (lsap->ls_hdr.ls_type), - *(&lsap->ls_hdr.opaque_type), - EXTRACT_24BITS(&lsap->ls_hdr.opaque_id), - ipaddr_string(&lsap->ls_hdr.ls_router), - EXTRACT_32BITS(&lsap->ls_hdr.ls_seq), - EXTRACT_16BITS(&lsap->ls_hdr.ls_age)); - - break; + printf("\n\t %s LSA (%d), Opaque-Type %s LSA (%u), Opaque-ID %u", + tok2str(lsa_values,"unknown",lshp->ls_type), + lshp->ls_type, + + tok2str(lsa_opaque_values, + "unknown", + *(&lshp->un_lsa_id.opaque_field.opaque_type)), + *(&lshp->un_lsa_id.opaque_field.opaque_type), + EXTRACT_24BITS(&lshp->un_lsa_id.opaque_field.opaque_id) + + ); + break; /* all other LSA types use regular style LSA headers */ default: - printf("\n\t %s LSA (%d), LSA-ID: %s, Adv. Router: %s, seq 0x%08x, age %us", - tok2str(lsa_values,"unknown",lsap->ls_hdr.ls_type), - lsap->ls_hdr.ls_type, - ipaddr_string(&lsap->ls_hdr.ls_stateid), - ipaddr_string(&lsap->ls_hdr.ls_router), - EXTRACT_32BITS(&lsap->ls_hdr.ls_seq), - EXTRACT_16BITS(&lsap->ls_hdr.ls_age)); - break; - } + printf("\n\t %s LSA (%d), LSA-ID: %s", + tok2str(lsa_values,"unknown",lshp->ls_type), + lshp->ls_type, + ipaddr_string(&lshp->un_lsa_id.lsa_id)); + break; + } + + TCHECK(lshp->ls_options); /* XXX - ls_length check checked this */ + printf("\n\t Options: [%s]", bittok2str(ospf_option_values,"none",lshp->ls_options)); + + return (ls_length); +trunc: + return (-1); +} - printf("\n\t Options: %s", bittok2str(ospf_option_values,"none",lsap->ls_hdr.ls_options)); +/* 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 + * return pointer to data past end of LSA. + */ +static const u_int8_t * +ospf_print_lsa(register const struct lsa *lsap) +{ + register const u_int8_t *ls_end; + register const struct rlalink *rlp; + 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, tlv_type, tlv_length, topology; + register int ls_length; + const u_int8_t *tptr; + + tptr = (u_int8_t *)lsap->lsa_un.un_unknown; /* squelch compiler warnings */ + ls_length = ospf_print_lshdr(&lsap->ls_hdr); + if (ls_length == -1) + return(NULL); + ls_end = (u_int8_t *)lsap + ls_length; + ls_length -= sizeof(struct lsa_hdr); - TCHECK(lsap->ls_hdr.ls_length); - ls_end = (u_char *)lsap + EXTRACT_16BITS(&lsap->ls_hdr.ls_length); switch (lsap->ls_hdr.ls_type) { case LS_TYPE_ROUTER: TCHECK(lsap->lsa_un.un_rla.rla_flags); - printf("\n\t Router LSA Options: %s", bittok2str(ospf_rla_flag_values,"unknown (%u)",lsap->lsa_un.un_rla.rla_flags)); + printf("\n\t Router LSA Options: [%s]", bittok2str(ospf_rla_flag_values,"none",lsap->lsa_un.un_rla.rla_flags)); TCHECK(lsap->lsa_un.un_rla.rla_count); j = EXTRACT_16BITS(&lsap->lsa_un.un_rla.rla_count); @@ -190,82 +591,73 @@ ospf_print_lsa(register const struct lsa *lsap) 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-IP: %s", + printf("\n\t Virtual Link: Neighbor Router-ID: %s, Interface Address: %s", ipaddr_string(&rlp->link_id), ipaddr_string(&rlp->link_data)); break; case RLA_TYPE_ROUTER: - printf("\n\t Neighbor-Router-ID: %s, Interface-IP: %s", + printf("\n\t Neighbor Router-ID: %s, Interface Address: %s", ipaddr_string(&rlp->link_id), ipaddr_string(&rlp->link_data)); break; case RLA_TYPE_TRANSIT: - printf("\n\t Neighbor-Network-ID: %s, Interface-IP: %s", + printf("\n\t Neighbor Network-ID: %s, Interface Address: %s", ipaddr_string(&rlp->link_id), ipaddr_string(&rlp->link_data)); break; case RLA_TYPE_STUB: - printf("\n\t Stub-Network: %s, mask: %s", + printf("\n\t Stub Network: %s, Mask: %s", ipaddr_string(&rlp->link_id), ipaddr_string(&rlp->link_data)); break; default: - printf("\n\t unknown Router Links Type (%u)", - rlp->link_type); - return (0); - } - 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)); + printf("\n\t Unknown Router Link Type (%u)", + rlp->un_tos.link.link_type); + return (ls_end); } + + 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; case LS_TYPE_NETWORK: TCHECK(lsap->lsa_un.un_nla.nla_mask); - printf("\n\t mask %s rtrs", + printf("\n\t Mask %s\n\t Connected Routers:", 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)); + printf("\n\t %s", ipaddr_string(ap)); ++ap; } break; case LS_TYPE_SUM_IP: TCHECK(lsap->lsa_un.un_nla.nla_mask); - printf("\n\t mask %s", + printf("\n\t Mask %s", 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; @@ -273,26 +665,24 @@ ospf_print_lsa(register const struct lsa *lsap) 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; case LS_TYPE_ASE: + case LS_TYPE_NSSA: /* fall through - those LSAs share the same format */ TCHECK(lsap->lsa_un.un_nla.nla_mask); - printf("\n\t mask %s", + printf("\n\t Mask %s", ipaddr_string(&lsap->lsa_un.un_asla.asla_mask)); TCHECK(lsap->lsa_un.un_sla.sla_tosmetric); @@ -302,9 +692,11 @@ ospf_print_lsa(register const struct lsa *lsap) 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 @@ -350,34 +742,185 @@ ospf_print_lsa(register const struct lsa *lsap) } break; - /* - * FIXME those are the defined LSAs that lack a decoder - * you are welcome to contribute code ;-) - */ - - case LS_TYPE_OPAQUE_LL: + case LS_TYPE_OPAQUE_LL: /* fall through */ case LS_TYPE_OPAQUE_AL: case LS_TYPE_OPAQUE_DW: - default: - if (vflag <= 1) { - if(!print_unknown_data((u_char *)lsap->lsa_un.un_unknown, - "\n\t ", EXTRACT_16BITS(&lsap->ls_hdr.ls_length)-sizeof(struct lsa_hdr))) - return(0); - } - break; + switch (*(&lsap->ls_hdr.un_lsa_id.opaque_field.opaque_type)) { + case LS_OPAQUE_TYPE_RI: + tptr = (u_int8_t *)(&lsap->lsa_un.un_ri_tlv.type); + + while (ls_length != 0) { + TCHECK2(*tptr, 4); + if (ls_length < 4) { + printf("\n\t Remaining LS length %u < 4", ls_length); + return(ls_end); + } + tlv_type = EXTRACT_16BITS(tptr); + tlv_length = EXTRACT_16BITS(tptr+2); + tptr+=4; + ls_length-=4; + + printf("\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) { + printf("\n\t Bogus length %u > %u", tlv_length, + ls_length); + return(ls_end); + } + TCHECK2(*tptr, tlv_length); + switch(tlv_type) { + + case LS_OPAQUE_RI_TLV_CAP: + if (tlv_length != 4) { + printf("\n\t Bogus length %u != 4", tlv_length); + return(ls_end); + } + printf("Capabilities: %s", + bittok2str(lsa_opaque_ri_tlv_cap_values, "Unknown", EXTRACT_32BITS(tptr))); + break; + default: + if (vflag <= 1) { + if(!print_unknown_data(tptr,"\n\t ",tlv_length)) + return(ls_end); + } + break; + + } + tptr+=tlv_length; + ls_length-=tlv_length; + } + break; + + case LS_OPAQUE_TYPE_GRACE: + if (ospf_print_grace_lsa((u_int8_t *)(&lsap->lsa_un.un_grace_tlv.type), + ls_length) == -1) { + return(ls_end); + } + break; + + case LS_OPAQUE_TYPE_TE: + if (ospf_print_te_lsa((u_int8_t *)(&lsap->lsa_un.un_te_lsa_tlv.type), + ls_length) == -1) { + return(ls_end); + } + break; + + default: + if (vflag <= 1) { + if(!print_unknown_data((u_int8_t *)lsap->lsa_un.un_unknown, + "\n\t ", ls_length)) + return(ls_end); + } + break; + } } /* do we want to see an additionally hexdump ? */ - if (vflag> 1) { - if(!print_unknown_data((u_char *)lsap->lsa_un.un_unknown, - "\n\t ", EXTRACT_16BITS(&lsap->ls_hdr.ls_length)-sizeof(struct lsa_hdr))) - return(0); - } + if (vflag> 1) + if(!print_unknown_data((u_int8_t *)lsap->lsa_un.un_unknown, + "\n\t ", ls_length)) { + return(ls_end); + } + + return (ls_end); +trunc: + return (NULL); +} - return (0); +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); + return (1); } static int @@ -388,7 +931,7 @@ ospf_decode_v2(register const struct ospfhdr *op, register const struct lsr *lsrp; register const struct lsa_hdr *lshp; register const struct lsa *lsap; - register int lsa_count; + register u_int32_t lsa_count,lsa_count_max; switch (op->ospf_type) { @@ -400,16 +943,16 @@ ospf_decode_v2(register const struct ospfhdr *op, 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", + 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); - printf("\n\t Options: %s", - bittok2str(ospf_option_values,"none",op->ospf_hello.hello_options)); - TCHECK(op->ospf_hello.hello_dr); if (op->ospf_hello.hello_dr.s_addr != 0) printf("\n\t Designated Router %s", @@ -432,57 +975,76 @@ ospf_decode_v2(register const struct ospfhdr *op, case OSPF_TYPE_DD: TCHECK(op->ospf_db.db_options); - printf("\n\t Options: %s", + printf("\n\tOptions [%s]", bittok2str(ospf_option_values,"none",op->ospf_db.db_options)); TCHECK(op->ospf_db.db_flags); - printf("\n\t DD Flags: %s", + 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", ntohs(op->ospf_db.db_ifmtu)); + } + TCHECK(op->ospf_db.db_seq); + printf(", Sequence: 0x%08x", EXTRACT_32BITS(&op->ospf_db.db_seq)); - if (vflag) { - /* Print all the LS adv's */ - lshp = op->ospf_db.db_lshdr; - while (!ospf_print_lshdr(lshp)) { - ++lshp; - } - } + /* Print all the LS adv's */ + lshp = op->ospf_db.db_lshdr; + while (((u_char *)lshp < dataend) && 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 %s LSA (%d), LSA-ID: %s, Advertising Router: %s", - tok2str(lsa_values,"unknown",lsrp->ls_type), - lsrp->ls_type, - ipaddr_string(&lsrp->ls_stateid), - ipaddr_string(&lsrp->ls_router)); - ++lsrp; + 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 = EXTRACT_32BITS(&op->ospf_lsu.lsu_count); - printf(", %d LSA%s",lsa_count, lsa_count > 1 ? "s" : ""); - while (lsa_count--) { - if (ospf_print_lsa(lsap)) + 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; - lsap = (struct lsa *)((u_char *)lsap + - EXTRACT_16BITS(&lsap->ls_hdr.ls_length)); } break; case OSPF_TYPE_LS_ACK: lshp = op->ospf_lsa.lsa_lshdr; - while (!ospf_print_lshdr(lshp)) { + while (ospf_print_lshdr(lshp) != -1) { ++lshp; } break; default: - printf("v2 type (%d)", op->ospf_type); break; } return (0); @@ -492,15 +1054,13 @@ trunc: void ospf_print(register const u_char *bp, register u_int length, - register const u_char *bp2) + 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); @@ -512,23 +1072,31 @@ ospf_print(register const u_char *bp, register u_int length, /* 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, "unknown LS-Type %d", op->ospf_type); - printf("OSPFv%d %s length: %d", op->ospf_version, cp, length); + cp = tok2str(type2str, "unknown LS-type", op->ospf_type); + printf("OSPFv%u, %s, length %u", + op->ospf_version, + cp, + length); if (*cp == 'u') return; - if(!vflag) /* non verbose - so lets bail out here */ + if(!vflag) { /* non verbose - so lets bail out here */ return; + } 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)); + printf("\n\tRouter-ID %s", ipaddr_string(&op->ospf_routerid)); TCHECK(op->ospf_areaid); if (op->ospf_areaid.s_addr != 0) @@ -550,9 +1118,8 @@ ospf_print(register const u_char *bp, register u_int length, break; case OSPF_AUTH_SIMPLE: - (void)fn_printn(op->ospf_authdata, - sizeof(op->ospf_authdata), NULL); - printf("\""); + printf("\n\tSimple text password: "); + safeputs((const char *)op->ospf_authdata, OSPF_AUTH_SIMPLE_LEN); break; case OSPF_AUTH_MD5: @@ -573,6 +1140,10 @@ ospf_print(register const u_char *bp, register u_int length, /* 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: