X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/1a04b92e365f5ed01ca38619b41bcc4fc9cbd63c..32d1d15c5412b3a708ae2b45ed2016bdab9bb58b:/print-isoclns.c diff --git a/print-isoclns.c b/print-isoclns.c index 3d09f994..7dcaa380 100644 --- a/print-isoclns.c +++ b/print-isoclns.c @@ -26,6 +26,14 @@ /* \summary: ISO CLNS, ESIS, and ISIS printer */ +/* + * specification: + * + * CLNP: ISO 8473 + * ES-IS: ISO 9542 + * IS-IS: ISO 10589 + */ + #ifdef HAVE_CONFIG_H #include "config.h" #endif @@ -109,7 +117,7 @@ static const struct tok isis_pdu_values[] = { #define ISIS_TLV_LSP_BUFFERSIZE 14 /* iso10589 rev2 */ #define ISIS_TLV_LSP_BUFFERSIZE_MINLEN 2 #define ISIS_TLV_EXT_IS_REACH 22 /* rfc5305 */ -#define ISIS_TLV_IS_ALIAS_ID 24 /* draft-ietf-isis-ext-lsp-frags-02 */ +#define ISIS_TLV_IS_ALIAS_ID 24 /* rfc5311 */ #define ISIS_TLV_DECNET_PHASE4 42 #define ISIS_TLV_LUCENT_PRIVATE 66 #define ISIS_TLV_INT_IP_REACH 128 /* rfc1195, rfc2966 */ @@ -450,10 +458,10 @@ static const struct tok isis_mt_capability_subtlv_values[] = { }; struct isis_spb_mcid { - uint8_t format_id; - uint8_t name[32]; - uint8_t revision_lvl[2]; - uint8_t digest[16]; + nd_uint8_t format_id; + nd_byte name[32]; + nd_uint16_t revision_lvl; + nd_byte digest[16]; }; struct isis_subtlv_spb_mcid { @@ -462,11 +470,11 @@ struct isis_subtlv_spb_mcid { }; struct isis_subtlv_spb_instance { - uint8_t cist_root_id[8]; - uint8_t cist_external_root_path_cost[4]; - uint8_t bridge_priority[2]; - uint8_t spsourceid[4]; - uint8_t no_of_trees; + nd_byte cist_root_id[8]; + nd_uint32_t cist_external_root_path_cost; + nd_uint16_t bridge_priority; + nd_uint32_t spsourceid; + nd_uint8_t no_of_trees; }; #define CLNP_SEGMENT_PART 0x80 @@ -480,14 +488,14 @@ static const struct tok clnp_flag_values[] = { { 0, NULL} }; -#define ISIS_MASK_LSP_OL_BIT(x) ((x)&0x4) -#define ISIS_MASK_LSP_ISTYPE_BITS(x) ((x)&0x3) -#define ISIS_MASK_LSP_PARTITION_BIT(x) ((x)&0x80) -#define ISIS_MASK_LSP_ATT_BITS(x) ((x)&0x78) -#define ISIS_MASK_LSP_ATT_ERROR_BIT(x) ((x)&0x40) -#define ISIS_MASK_LSP_ATT_EXPENSE_BIT(x) ((x)&0x20) -#define ISIS_MASK_LSP_ATT_DELAY_BIT(x) ((x)&0x10) -#define ISIS_MASK_LSP_ATT_DEFAULT_BIT(x) ((x)&0x8) +#define ISIS_MASK_LSP_OL_BIT(x) (EXTRACT_U_1(x)&0x4) +#define ISIS_MASK_LSP_ISTYPE_BITS(x) (EXTRACT_U_1(x)&0x3) +#define ISIS_MASK_LSP_PARTITION_BIT(x) (EXTRACT_U_1(x)&0x80) +#define ISIS_MASK_LSP_ATT_BITS(x) (EXTRACT_U_1(x)&0x78) +#define ISIS_MASK_LSP_ATT_ERROR_BIT(x) (EXTRACT_U_1(x)&0x40) +#define ISIS_MASK_LSP_ATT_EXPENSE_BIT(x) (EXTRACT_U_1(x)&0x20) +#define ISIS_MASK_LSP_ATT_DELAY_BIT(x) (EXTRACT_U_1(x)&0x10) +#define ISIS_MASK_LSP_ATT_DEFAULT_BIT(x) (EXTRACT_U_1(x)&0x8) #define ISIS_MASK_MTID(x) ((x)&0x0fff) #define ISIS_MASK_MTFLAGS(x) ((x)&0xf000) @@ -504,10 +512,10 @@ static const struct tok isis_mt_flag_values[] = { #define ISIS_MASK_TLV_EXTD_IP6_IE(x) ((x)&0x40) #define ISIS_MASK_TLV_EXTD_IP6_SUBTLV(x) ((x)&0x20) -#define ISIS_LSP_TLV_METRIC_SUPPORTED(x) ((x)&0x80) -#define ISIS_LSP_TLV_METRIC_IE(x) ((x)&0x40) -#define ISIS_LSP_TLV_METRIC_UPDOWN(x) ((x)&0x80) -#define ISIS_LSP_TLV_METRIC_VALUE(x) ((x)&0x3f) +#define ISIS_LSP_TLV_METRIC_SUPPORTED(x) (EXTRACT_U_1(x)&0x80) +#define ISIS_LSP_TLV_METRIC_IE(x) (EXTRACT_U_1(x)&0x40) +#define ISIS_LSP_TLV_METRIC_UPDOWN(x) (EXTRACT_U_1(x)&0x80) +#define ISIS_LSP_TLV_METRIC_VALUE(x) (EXTRACT_U_1(x)&0x3f) #define ISIS_MASK_TLV_SHARED_RISK_GROUP(x) ((x)&0x1) @@ -557,10 +565,10 @@ static const struct tok isis_ptp_adjancey_values[] = { }; struct isis_tlv_ptp_adj { - uint8_t adjacency_state; - uint8_t extd_local_circuit_id[4]; - uint8_t neighbor_sysid[SYSTEM_ID_LEN]; - uint8_t neighbor_extd_local_circuit_id[4]; + nd_uint8_t adjacency_state; + nd_uint32_t extd_local_circuit_id; + nd_byte neighbor_sysid[SYSTEM_ID_LEN]; + nd_uint32_t neighbor_extd_local_circuit_id; }; static void osi_print_cksum(netdissect_options *, const uint8_t *pptr, @@ -570,26 +578,26 @@ static void esis_print(netdissect_options *, const uint8_t *, u_int); static int isis_print(netdissect_options *, const uint8_t *, u_int); struct isis_metric_block { - uint8_t metric_default; - uint8_t metric_delay; - uint8_t metric_expense; - uint8_t metric_error; + nd_uint8_t metric_default; + nd_uint8_t metric_delay; + nd_uint8_t metric_expense; + nd_uint8_t metric_error; }; struct isis_tlv_is_reach { struct isis_metric_block isis_metric_block; - uint8_t neighbor_nodeid[NODE_ID_LEN]; + nd_byte neighbor_nodeid[NODE_ID_LEN]; }; struct isis_tlv_es_reach { struct isis_metric_block isis_metric_block; - uint8_t neighbor_sysid[SYSTEM_ID_LEN]; + nd_byte neighbor_sysid[SYSTEM_ID_LEN]; }; struct isis_tlv_ip_reach { struct isis_metric_block isis_metric_block; - uint8_t prefix[4]; - uint8_t mask[4]; + nd_ipv4 prefix; + nd_ipv4 mask; }; static const struct tok isis_is_reach_virtual_values[] = { @@ -606,59 +614,59 @@ static const struct tok isis_restart_flag_values[] = { }; struct isis_common_header { - uint8_t nlpid; - uint8_t fixed_len; - uint8_t version; /* Protocol version */ - uint8_t id_length; - uint8_t pdu_type; /* 3 MSbits are reserved */ - uint8_t pdu_version; /* Packet format version */ - uint8_t reserved; - uint8_t max_area; + nd_uint8_t nlpid; + nd_uint8_t fixed_len; + nd_uint8_t version; /* Protocol version */ + nd_uint8_t id_length; + nd_uint8_t pdu_type; /* 3 MSbits are reserved */ + nd_uint8_t pdu_version; /* Packet format version */ + nd_byte reserved; + nd_uint8_t max_area; }; struct isis_iih_lan_header { - uint8_t circuit_type; - uint8_t source_id[SYSTEM_ID_LEN]; - uint8_t holding_time[2]; - uint8_t pdu_len[2]; - uint8_t priority; - uint8_t lan_id[NODE_ID_LEN]; + nd_uint8_t circuit_type; + nd_byte source_id[SYSTEM_ID_LEN]; + nd_uint16_t holding_time; + nd_uint16_t pdu_len; + nd_uint8_t priority; + nd_byte lan_id[NODE_ID_LEN]; }; struct isis_iih_ptp_header { - uint8_t circuit_type; - uint8_t source_id[SYSTEM_ID_LEN]; - uint8_t holding_time[2]; - uint8_t pdu_len[2]; - uint8_t circuit_id; + nd_uint8_t circuit_type; + nd_byte source_id[SYSTEM_ID_LEN]; + nd_uint16_t holding_time; + nd_uint16_t pdu_len; + nd_uint8_t circuit_id; }; struct isis_lsp_header { - uint8_t pdu_len[2]; - uint8_t remaining_lifetime[2]; - uint8_t lsp_id[LSP_ID_LEN]; - uint8_t sequence_number[4]; - uint8_t checksum[2]; - uint8_t typeblock; + nd_uint16_t pdu_len; + nd_uint16_t remaining_lifetime; + nd_byte lsp_id[LSP_ID_LEN]; + nd_uint32_t sequence_number; + nd_uint16_t checksum; + nd_uint8_t typeblock; }; struct isis_csnp_header { - uint8_t pdu_len[2]; - uint8_t source_id[NODE_ID_LEN]; - uint8_t start_lsp_id[LSP_ID_LEN]; - uint8_t end_lsp_id[LSP_ID_LEN]; + nd_uint16_t pdu_len; + nd_byte source_id[NODE_ID_LEN]; + nd_byte start_lsp_id[LSP_ID_LEN]; + nd_byte end_lsp_id[LSP_ID_LEN]; }; struct isis_psnp_header { - uint8_t pdu_len[2]; - uint8_t source_id[NODE_ID_LEN]; + nd_uint16_t pdu_len; + nd_byte source_id[NODE_ID_LEN]; }; struct isis_tlv_lsp { - uint8_t remaining_lifetime[2]; - uint8_t lsp_id[LSP_ID_LEN]; - uint8_t sequence_number[4]; - uint8_t checksum[2]; + nd_uint16_t remaining_lifetime; + nd_byte lsp_id[LSP_ID_LEN]; + nd_uint32_t sequence_number; + nd_uint16_t checksum; }; #define ISIS_COMMON_HEADER_SIZE (sizeof(struct isis_common_header)) @@ -741,19 +749,19 @@ static const struct tok clnp_pdu_values[] = { }; struct clnp_header_t { - uint8_t nlpid; - uint8_t length_indicator; - uint8_t version; - uint8_t lifetime; /* units of 500ms */ - uint8_t type; - uint8_t segment_length[2]; - uint8_t cksum[2]; + nd_uint8_t nlpid; + nd_uint8_t length_indicator; + nd_uint8_t version; + nd_uint8_t lifetime; /* units of 500ms */ + nd_uint8_t type; + nd_uint16_t segment_length; + nd_uint16_t cksum; }; struct clnp_segment_header_t { - uint8_t data_unit_id[2]; - uint8_t segment_offset[2]; - uint8_t total_length[2]; + nd_uint16_t data_unit_id; + nd_uint16_t segment_offset; + nd_uint16_t total_length; }; /* @@ -766,7 +774,7 @@ clnp_print(netdissect_options *ndo, const uint8_t *pptr, u_int length) { const uint8_t *optr,*source_address,*dest_address; - u_int li,tlen,nsap_offset,source_address_length,dest_address_length, clnp_pdu_type, clnp_flags; + u_int li,li_remaining,tlen,nsap_offset,source_address_length,dest_address_length, clnp_pdu_type, clnp_flags; const struct clnp_header_t *clnp_header; const struct clnp_segment_header_t *clnp_segment_header; uint8_t rfd_error,rfd_error_major,rfd_error_minor; @@ -774,7 +782,8 @@ clnp_print(netdissect_options *ndo, clnp_header = (const struct clnp_header_t *) pptr; ND_TCHECK(*clnp_header); - li = clnp_header->length_indicator; + li = EXTRACT_U_1(clnp_header->length_indicator); + li_remaining = li; optr = pptr; if (!ndo->ndo_eflag) @@ -784,8 +793,8 @@ clnp_print(netdissect_options *ndo, * Sanity checking of the header. */ - if (clnp_header->version != CLNP_VERSION) { - ND_PRINT((ndo, "version %d packet not supported", clnp_header->version)); + if (EXTRACT_U_1(clnp_header->version) != CLNP_VERSION) { + ND_PRINT((ndo, "version %u packet not supported", EXTRACT_U_1(clnp_header->version))); return (0); } @@ -805,45 +814,45 @@ clnp_print(netdissect_options *ndo, /* FIXME further header sanity checking */ - clnp_pdu_type = clnp_header->type & CLNP_PDU_TYPE_MASK; - clnp_flags = clnp_header->type & CLNP_FLAG_MASK; + clnp_pdu_type = EXTRACT_U_1(clnp_header->type) & CLNP_PDU_TYPE_MASK; + clnp_flags = EXTRACT_U_1(clnp_header->type) & CLNP_FLAG_MASK; pptr += sizeof(struct clnp_header_t); - li -= sizeof(struct clnp_header_t); + li_remaining -= sizeof(struct clnp_header_t); - if (li < 1) { + if (li_remaining < 1) { ND_PRINT((ndo, "li < size of fixed part of CLNP header and addresses")); return (0); } ND_TCHECK_1(pptr); dest_address_length = EXTRACT_U_1(pptr); pptr += 1; - li -= 1; - if (li < dest_address_length) { + li_remaining -= 1; + if (li_remaining < dest_address_length) { ND_PRINT((ndo, "li < size of fixed part of CLNP header and addresses")); return (0); } ND_TCHECK_LEN(pptr, dest_address_length); dest_address = pptr; pptr += dest_address_length; - li -= dest_address_length; + li_remaining -= dest_address_length; - if (li < 1) { + if (li_remaining < 1) { ND_PRINT((ndo, "li < size of fixed part of CLNP header and addresses")); return (0); } ND_TCHECK_1(pptr); source_address_length = EXTRACT_U_1(pptr); pptr += 1; - li -= 1; - if (li < source_address_length) { + li_remaining -= 1; + if (li_remaining < source_address_length) { ND_PRINT((ndo, "li < size of fixed part of CLNP header and addresses")); return (0); } ND_TCHECK_LEN(pptr, source_address_length); source_address = pptr; pptr += source_address_length; - li -= source_address_length; + li_remaining -= source_address_length; if (ndo->ndo_vflag < 1) { ND_PRINT((ndo, "%s%s > %s, %s, length %u", @@ -858,15 +867,15 @@ clnp_print(netdissect_options *ndo, ND_PRINT((ndo, "\n\t%s PDU, hlen: %u, v: %u, lifetime: %u.%us, Segment PDU length: %u, checksum: 0x%04x", tok2str(clnp_pdu_values, "unknown (%u)",clnp_pdu_type), - clnp_header->length_indicator, - clnp_header->version, - clnp_header->lifetime/2, - (clnp_header->lifetime%2)*5, + EXTRACT_U_1(clnp_header->length_indicator), + EXTRACT_U_1(clnp_header->version), + EXTRACT_U_1(clnp_header->lifetime)/2, + (EXTRACT_U_1(clnp_header->lifetime)%2)*5, EXTRACT_BE_U_2(clnp_header->segment_length), EXTRACT_BE_U_2(clnp_header->cksum))); osi_print_cksum(ndo, optr, EXTRACT_BE_U_2(clnp_header->cksum), 7, - clnp_header->length_indicator); + EXTRACT_U_1(clnp_header->length_indicator)); ND_PRINT((ndo, "\n\tFlags [%s]", bittok2str(clnp_flag_values, "none", clnp_flags))); @@ -878,7 +887,7 @@ clnp_print(netdissect_options *ndo, isonsap_string(ndo, dest_address, dest_address_length))); if (clnp_flags & CLNP_SEGMENT_PART) { - if (li < sizeof(struct clnp_segment_header_t)) { + if (li_remaining < sizeof(struct clnp_segment_header_t)) { ND_PRINT((ndo, "li < size of fixed part of CLNP header, addresses, and segment part")); return (0); } @@ -889,15 +898,15 @@ clnp_print(netdissect_options *ndo, EXTRACT_BE_U_2(clnp_segment_header->segment_offset), EXTRACT_BE_U_2(clnp_segment_header->total_length))); pptr+=sizeof(struct clnp_segment_header_t); - li-=sizeof(struct clnp_segment_header_t); + li_remaining-=sizeof(struct clnp_segment_header_t); } /* now walk the options */ - while (li >= 2) { + while (li_remaining >= 2) { u_int op, opli; const uint8_t *tptr; - if (li < 2) { + if (li_remaining < 2) { ND_PRINT((ndo, ", bad opts/li")); return (0); } @@ -905,13 +914,13 @@ clnp_print(netdissect_options *ndo, op = EXTRACT_U_1(pptr); opli = EXTRACT_U_1(pptr + 1); pptr += 2; - li -= 2; - if (opli > li) { - ND_PRINT((ndo, ", opt (%d) too long", op)); + li_remaining -= 2; + if (opli > li_remaining) { + ND_PRINT((ndo, ", opt (%u) too long", op)); return (0); } ND_TCHECK_LEN(pptr, opli); - li -= opli; + li_remaining -= opli; tptr = pptr; tlen = opli; @@ -1044,7 +1053,7 @@ clnp_print(netdissect_options *ndo, if (EXTRACT_U_1(pptr) == NLPID_CLNP) { ND_PRINT((ndo, "\n\t-----original packet-----\n\t")); /* FIXME recursion protection */ - clnp_print(ndo, pptr, length - clnp_header->length_indicator); + clnp_print(ndo, pptr, length - li); break; } @@ -1055,7 +1064,7 @@ clnp_print(netdissect_options *ndo, default: /* dump the PDU specific data */ if (length-(pptr-optr) > 0) { - ND_PRINT((ndo, "\n\t undecoded non-header data, length %u", length-clnp_header->length_indicator)); + ND_PRINT((ndo, "\n\t undecoded non-header data, length %u", length-li)); print_unknown_data(ndo, pptr, "\n\t ", length - (pptr - optr)); } } @@ -1081,13 +1090,13 @@ static const struct tok esis_pdu_values[] = { }; struct esis_header_t { - uint8_t nlpid; - uint8_t length_indicator; - uint8_t version; - uint8_t reserved; - uint8_t type; - uint8_t holdtime[2]; - uint8_t cksum[2]; + nd_uint8_t nlpid; + nd_uint8_t length_indicator; + nd_uint8_t version; + nd_byte reserved; + nd_uint8_t type; + nd_uint16_t holdtime; + nd_uint16_t cksum; }; static void @@ -1095,7 +1104,7 @@ esis_print(netdissect_options *ndo, const uint8_t *pptr, u_int length) { const uint8_t *optr; - u_int li,esis_pdu_type,source_address_length, source_address_number; + u_int li, version, esis_pdu_type, source_address_length, source_address_number; const struct esis_header_t *esis_header; if (!ndo->ndo_eflag) @@ -1108,20 +1117,21 @@ esis_print(netdissect_options *ndo, esis_header = (const struct esis_header_t *) pptr; ND_TCHECK(*esis_header); - li = esis_header->length_indicator; + li = EXTRACT_U_1(esis_header->length_indicator); optr = pptr; /* * Sanity checking of the header. */ - if (esis_header->nlpid != NLPID_ESIS) { - ND_PRINT((ndo, " nlpid 0x%02x packet not supported", esis_header->nlpid)); + if (EXTRACT_U_1(esis_header->nlpid) != NLPID_ESIS) { + ND_PRINT((ndo, " nlpid 0x%02x packet not supported", EXTRACT_U_1(esis_header->nlpid))); return; } - if (esis_header->version != ESIS_VERSION) { - ND_PRINT((ndo, " version %d packet not supported", esis_header->version)); + version = EXTRACT_U_1(esis_header->version); + if (version != ESIS_VERSION) { + ND_PRINT((ndo, " version %u packet not supported", version)); return; } @@ -1139,7 +1149,7 @@ esis_print(netdissect_options *ndo, return; } - esis_pdu_type = esis_header->type & ESIS_PDU_TYPE_MASK; + esis_pdu_type = EXTRACT_U_1(esis_header->type) & ESIS_PDU_TYPE_MASK; if (ndo->ndo_vflag < 1) { ND_PRINT((ndo, "%s%s, length %u", @@ -1154,7 +1164,7 @@ esis_print(netdissect_options *ndo, tok2str(esis_pdu_values,"unknown type: %u", esis_pdu_type), esis_pdu_type)); - ND_PRINT((ndo, ", v: %u%s", esis_header->version, esis_header->version == ESIS_VERSION ? "" : "unsupported" )); + ND_PRINT((ndo, ", v: %u%s", version, version == ESIS_VERSION ? "" : "unsupported" )); ND_PRINT((ndo, ", checksum: 0x%04x", EXTRACT_BE_U_2(esis_header->cksum))); osi_print_cksum(ndo, pptr, EXTRACT_BE_U_2(esis_header->cksum), 7, @@ -1319,7 +1329,7 @@ esis_print(netdissect_options *ndo, pptr += 2; li -= 2; if (opli > li) { - ND_PRINT((ndo, ", opt (%d) too long", op)); + ND_PRINT((ndo, ", opt (%u) too long", op)); return; } li -= opli; @@ -1385,12 +1395,12 @@ isis_print_mcid(netdissect_options *ndo, int i; ND_TCHECK(*mcid); - ND_PRINT((ndo, "ID: %d, Name: ", mcid->format_id)); + ND_PRINT((ndo, "ID: %u, Name: ", EXTRACT_U_1(mcid->format_id))); if (fn_printzp(ndo, mcid->name, 32, ndo->ndo_snapend)) goto trunc; - ND_PRINT((ndo, "\n\t Lvl: %d", EXTRACT_BE_U_2(mcid->revision_lvl))); + ND_PRINT((ndo, "\n\t Lvl: %u", EXTRACT_BE_U_2(mcid->revision_lvl))); ND_PRINT((ndo, ", Digest: ")); @@ -1403,9 +1413,9 @@ trunc: static int isis_print_mt_port_cap_subtlv(netdissect_options *ndo, - const uint8_t *tptr, int len) + const uint8_t *tptr, u_int len) { - int stlv_type, stlv_len; + u_int stlv_type, stlv_len; const struct isis_subtlv_spb_mcid *subtlv_spb_mcid; int i; @@ -1463,7 +1473,7 @@ isis_print_mt_port_cap_subtlv(netdissect_options *ndo, if (stlv_len < ISIS_SUBTLV_SPB_DIGEST_MIN_LEN) goto trunc; - ND_PRINT((ndo, "\n\t RES: %d V: %d A: %d D: %d", + ND_PRINT((ndo, "\n\t RES: %u V: %u A: %u D: %u", (EXTRACT_U_1(tptr) >> 5), ((EXTRACT_U_1(tptr) >> 4) & 0x01), ((EXTRACT_U_1(tptr) >> 2) & 0x03), @@ -1496,7 +1506,7 @@ isis_print_mt_port_cap_subtlv(netdissect_options *ndo, tptr = tptr+4; - ND_PRINT((ndo, " BVID: %d, U:%01x M:%01x ", + ND_PRINT((ndo, " BVID: %u, U:%01x M:%01x ", (EXTRACT_BE_U_2(tptr) >> 4) , (EXTRACT_BE_U_2(tptr) >> 3) & 0x01, (EXTRACT_BE_U_2(tptr) >> 2) & 0x01)); @@ -1526,9 +1536,9 @@ isis_print_mt_port_cap_subtlv(netdissect_options *ndo, static int isis_print_mt_capability_subtlv(netdissect_options *ndo, - const uint8_t *tptr, int len) + const uint8_t *tptr, u_int len) { - int stlv_type, stlv_len, tmp; + u_int stlv_type, stlv_len, tmp; while (len > 2) { @@ -1562,13 +1572,13 @@ isis_print_mt_capability_subtlv(netdissect_options *ndo, tptr = tptr+4; ND_PRINT((ndo, ", Path Cost: %08x", EXTRACT_BE_U_4(tptr))); tptr = tptr+4; - ND_PRINT((ndo, ", Prio: %d", EXTRACT_BE_U_2(tptr))); + ND_PRINT((ndo, ", Prio: %u", EXTRACT_BE_U_2(tptr))); tptr = tptr + 2; - ND_PRINT((ndo, "\n\t RES: %d", + ND_PRINT((ndo, "\n\t RES: %u", EXTRACT_BE_U_2(tptr) >> 5)); - ND_PRINT((ndo, ", V: %d", + ND_PRINT((ndo, ", V: %u", (EXTRACT_BE_U_2(tptr) >> 4) & 0x0001)); - ND_PRINT((ndo, ", SPSource-ID: %d", + ND_PRINT((ndo, ", SPSource-ID: %u", (EXTRACT_BE_U_4(tptr) & 0x000fffff))); tptr = tptr+4; ND_PRINT((ndo, ", No of Trees: %x", EXTRACT_U_1(tptr))); @@ -1584,7 +1594,7 @@ isis_print_mt_capability_subtlv(netdissect_options *ndo, if (stlv_len < ISIS_SUBTLV_SPB_INSTANCE_VLAN_TUPLE_LEN) goto trunc; - ND_PRINT((ndo, "\n\t U:%d, M:%d, A:%d, RES:%d", + ND_PRINT((ndo, "\n\t U:%u, M:%u, A:%u, RES:%u", EXTRACT_U_1(tptr) >> 7, (EXTRACT_U_1(tptr) >> 6) & 0x01, (EXTRACT_U_1(tptr) >> 5) & 0x01, @@ -1596,7 +1606,7 @@ isis_print_mt_capability_subtlv(netdissect_options *ndo, tptr = tptr + 4; - ND_PRINT((ndo, ", BVID: %d, SPVID: %d", + ND_PRINT((ndo, ", BVID: %u, SPVID: %u", (EXTRACT_BE_U_3(tptr) >> 12) & 0x000fff, EXTRACT_BE_U_3(tptr) & 0x000fff)); @@ -1617,7 +1627,7 @@ isis_print_mt_capability_subtlv(netdissect_options *ndo, ND_PRINT((ndo, "%04x", EXTRACT_BE_U_2(tptr))); tptr = tptr+2; - ND_PRINT((ndo, ", RES: %d, VID: %d", EXTRACT_BE_U_2(tptr) >> 12, + ND_PRINT((ndo, ", RES: %u, VID: %u", EXTRACT_BE_U_2(tptr) >> 12, (EXTRACT_BE_U_2(tptr)) & 0x0fff)); tptr = tptr+2; @@ -1626,7 +1636,7 @@ isis_print_mt_capability_subtlv(netdissect_options *ndo, while (stlv_len >= 4) { ND_TCHECK_4(tptr); - ND_PRINT((ndo, "\n\t T: %d, R: %d, RES: %d, ISID: %d", + ND_PRINT((ndo, "\n\t T: %u, R: %u, RES: %u, ISID: %u", (EXTRACT_BE_U_4(tptr) >> 31), (EXTRACT_BE_U_4(tptr) >> 30) & 0x01, (EXTRACT_BE_U_4(tptr) >> 24) & 0x03f, @@ -1655,12 +1665,12 @@ isis_print_mt_capability_subtlv(netdissect_options *ndo, /* shared routine for printing system, node and lsp-ids */ static char * -isis_print_id(const uint8_t *cp, int id_len) +isis_print_id(const uint8_t *cp, u_int id_len) { - int i; + u_int i; static char id[sizeof("xxxx.xxxx.xxxx.yy-zz")]; char *pos = id; - int sysid_len; + u_int sysid_len; sysid_len = SYSTEM_ID_LEN; if (sysid_len > id_len) @@ -1687,19 +1697,19 @@ static int isis_print_metric_block(netdissect_options *ndo, const struct isis_metric_block *isis_metric_block) { - ND_PRINT((ndo, ", Default Metric: %d, %s", + ND_PRINT((ndo, ", Default Metric: %u, %s", ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_default), ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_default) ? "External" : "Internal")); if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_delay)) - ND_PRINT((ndo, "\n\t\t Delay Metric: %d, %s", + ND_PRINT((ndo, "\n\t\t Delay Metric: %u, %s", ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_delay), ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_delay) ? "External" : "Internal")); if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_expense)) - ND_PRINT((ndo, "\n\t\t Expense Metric: %d, %s", + ND_PRINT((ndo, "\n\t\t Expense Metric: %u, %s", ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_expense), ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_expense) ? "External" : "Internal")); if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_error)) - ND_PRINT((ndo, "\n\t\t Error Metric: %d, %s", + ND_PRINT((ndo, "\n\t\t Error Metric: %u, %s", ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_error), ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_error) ? "External" : "Internal")); @@ -1708,7 +1718,7 @@ isis_print_metric_block(netdissect_options *ndo, static int isis_print_tlv_ip_reach(netdissect_options *ndo, - const uint8_t *cp, const char *ident, int length) + const uint8_t *cp, const char *ident, u_int length) { int prefix_len; const struct isis_tlv_ip_reach *tlv_ip_reach; @@ -1717,7 +1727,7 @@ isis_print_tlv_ip_reach(netdissect_options *ndo, while (length > 0) { if ((size_t)length < sizeof(*tlv_ip_reach)) { - ND_PRINT((ndo, "short IPv4 Reachability (%d vs %lu)", + ND_PRINT((ndo, "short IPv4 Reachability (%u vs %lu)", length, (unsigned long)sizeof(*tlv_ip_reach))); return (0); @@ -1726,7 +1736,7 @@ isis_print_tlv_ip_reach(netdissect_options *ndo, if (!ND_TTEST(*tlv_ip_reach)) return (0); - prefix_len = mask2plen(EXTRACT_BE_U_4(tlv_ip_reach->mask)); + prefix_len = mask2plen(EXTRACT_IPV4_TO_HOST_ORDER(tlv_ip_reach->mask)); if (prefix_len == -1) ND_PRINT((ndo, "%sIPv4 prefix: %s mask %s", @@ -1775,7 +1785,7 @@ isis_print_tlv_ip_reach(netdissect_options *ndo, static int isis_print_ip_reach_subtlv(netdissect_options *ndo, - const uint8_t *tptr, int subt, int subl, + const uint8_t *tptr, u_int subt, u_int subl, const char *ident) { /* first lets see if we know the subTLVs name*/ @@ -1818,170 +1828,6 @@ trunc: return(0); } -/* - * this is the common IS-REACH subTLV decoder it is called - * from isis_print_ext_is_reach() - */ - -static int -isis_print_is_reach_subtlv(netdissect_options *ndo, - const uint8_t *tptr, u_int subt, u_int subl, - const char *ident) -{ - u_int te_class,priority_level,gmpls_switch_cap; - union { /* int to float conversion buffer for several subTLVs */ - float f; - uint32_t i; - } bw; - - /* first lets see if we know the subTLVs name*/ - ND_PRINT((ndo, "%s%s subTLV #%u, length: %u", - ident, tok2str(isis_ext_is_reach_subtlv_values, "unknown", subt), - subt, subl)); - - ND_TCHECK_LEN(tptr, subl); - - switch(subt) { - case ISIS_SUBTLV_EXT_IS_REACH_ADMIN_GROUP: - case ISIS_SUBTLV_EXT_IS_REACH_LINK_LOCAL_REMOTE_ID: - case ISIS_SUBTLV_EXT_IS_REACH_LINK_REMOTE_ID: - if (subl >= 4) { - ND_PRINT((ndo, ", 0x%08x", EXTRACT_BE_U_4(tptr))); - if (subl == 8) /* rfc4205 */ - ND_PRINT((ndo, ", 0x%08x", EXTRACT_BE_U_4(tptr + 4))); - } - break; - case ISIS_SUBTLV_EXT_IS_REACH_IPV4_INTF_ADDR: - case ISIS_SUBTLV_EXT_IS_REACH_IPV4_NEIGHBOR_ADDR: - if (subl >= sizeof(struct in_addr)) - ND_PRINT((ndo, ", %s", ipaddr_string(ndo, tptr))); - break; - case ISIS_SUBTLV_EXT_IS_REACH_MAX_LINK_BW : - case ISIS_SUBTLV_EXT_IS_REACH_RESERVABLE_BW: - if (subl >= 4) { - bw.i = EXTRACT_BE_U_4(tptr); - ND_PRINT((ndo, ", %.3f Mbps", bw.f * 8 / 1000000)); - } - break; - case ISIS_SUBTLV_EXT_IS_REACH_UNRESERVED_BW : - if (subl >= 32) { - for (te_class = 0; te_class < 8; te_class++) { - bw.i = EXTRACT_BE_U_4(tptr); - ND_PRINT((ndo, "%s TE-Class %u: %.3f Mbps", - ident, - te_class, - bw.f * 8 / 1000000)); - tptr+=4; - } - } - break; - case ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS: /* fall through */ - case ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS_OLD: - if (subl == 0) - break; - ND_PRINT((ndo, "%sBandwidth Constraints Model ID: %s (%u)", - ident, - tok2str(diffserv_te_bc_values, "unknown", EXTRACT_U_1(tptr)), - EXTRACT_U_1(tptr))); - tptr++; - /* decode BCs until the subTLV ends */ - for (te_class = 0; te_class < (subl-1)/4; te_class++) { - bw.i = EXTRACT_BE_U_4(tptr); - ND_PRINT((ndo, "%s Bandwidth constraint CT%u: %.3f Mbps", - ident, - te_class, - bw.f * 8 / 1000000)); - tptr+=4; - } - break; - case ISIS_SUBTLV_EXT_IS_REACH_TE_METRIC: - if (subl >= 3) - ND_PRINT((ndo, ", %u", EXTRACT_BE_U_3(tptr))); - break; - case ISIS_SUBTLV_EXT_IS_REACH_LINK_ATTRIBUTE: - if (subl == 2) { - ND_PRINT((ndo, ", [ %s ] (0x%04x)", - bittok2str(isis_subtlv_link_attribute_values, - "Unknown", - EXTRACT_BE_U_2(tptr)), - EXTRACT_BE_U_2(tptr))); - } - break; - case ISIS_SUBTLV_EXT_IS_REACH_LINK_PROTECTION_TYPE: - if (subl >= 2) { - ND_PRINT((ndo, ", %s, Priority %u", - bittok2str(gmpls_link_prot_values, "none", EXTRACT_U_1(tptr)), - EXTRACT_U_1(tptr + 1))); - } - break; - case ISIS_SUBTLV_SPB_METRIC: - if (subl >= 6) { - ND_PRINT((ndo, ", LM: %u", EXTRACT_BE_U_3(tptr))); - tptr=tptr+3; - ND_PRINT((ndo, ", P: %u", EXTRACT_U_1(tptr))); - tptr++; - ND_PRINT((ndo, ", P-ID: %u", EXTRACT_BE_U_2(tptr))); - } - break; - case ISIS_SUBTLV_EXT_IS_REACH_INTF_SW_CAP_DESCR: - if (subl >= 36) { - gmpls_switch_cap = EXTRACT_U_1(tptr); - ND_PRINT((ndo, "%s Interface Switching Capability:%s", - ident, - tok2str(gmpls_switch_cap_values, "Unknown", gmpls_switch_cap))); - ND_PRINT((ndo, ", LSP Encoding: %s", - tok2str(gmpls_encoding_values, "Unknown", EXTRACT_U_1((tptr + 1))))); - tptr+=4; - ND_PRINT((ndo, "%s Max LSP Bandwidth:", ident)); - for (priority_level = 0; priority_level < 8; priority_level++) { - bw.i = EXTRACT_BE_U_4(tptr); - ND_PRINT((ndo, "%s priority level %d: %.3f Mbps", - ident, - priority_level, - bw.f * 8 / 1000000)); - tptr+=4; - } - subl-=36; - switch (gmpls_switch_cap) { - case GMPLS_PSC1: - case GMPLS_PSC2: - case GMPLS_PSC3: - case GMPLS_PSC4: - if (subl < 6) - break; - bw.i = EXTRACT_BE_U_4(tptr); - ND_PRINT((ndo, "%s Min LSP Bandwidth: %.3f Mbps", ident, bw.f * 8 / 1000000)); - ND_PRINT((ndo, "%s Interface MTU: %u", ident, EXTRACT_BE_U_2(tptr + 4))); - break; - case GMPLS_TSC: - if (subl < 8) - break; - bw.i = EXTRACT_BE_U_4(tptr); - ND_PRINT((ndo, "%s Min LSP Bandwidth: %.3f Mbps", ident, bw.f * 8 / 1000000)); - ND_PRINT((ndo, "%s Indication %s", ident, - tok2str(gmpls_switch_cap_tsc_indication_values, "Unknown (%u)", EXTRACT_U_1((tptr + 4))))); - break; - default: - /* there is some optional stuff left to decode but this is as of yet - not specified so just lets hexdump what is left */ - if(subl>0){ - if (!print_unknown_data(ndo, tptr, "\n\t\t ", subl)) - return(0); - } - } - } - break; - default: - if (!print_unknown_data(ndo, tptr, "\n\t\t ", subl)) - return(0); - break; - } - return(1); - -trunc: - return(0); -} - /* * this is the common IS-REACH decoder it is called * from various EXTD-IS REACH style TLVs (22,24,222) @@ -1989,49 +1835,256 @@ trunc: static int isis_print_ext_is_reach(netdissect_options *ndo, - const uint8_t *tptr, const char *ident, int tlv_type) + const uint8_t *tptr, const char *ident, u_int tlv_type, + u_int tlv_remaining) { char ident_buffer[20]; - int subtlv_type,subtlv_len,subtlv_sum_len; + u_int subtlv_type,subtlv_len,subtlv_sum_len; int proc_bytes = 0; /* how many bytes did we process ? */ + u_int te_class,priority_level,gmpls_switch_cap; + union { /* int to float conversion buffer for several subTLVs */ + float f; + uint32_t i; + } bw; if (!ND_TTEST_LEN(tptr, NODE_ID_LEN)) return(0); + if (tlv_remaining < NODE_ID_LEN) + return(0); ND_PRINT((ndo, "%sIS Neighbor: %s", ident, isis_print_id(tptr, NODE_ID_LEN))); tptr+=NODE_ID_LEN; + tlv_remaining-=NODE_ID_LEN; if (tlv_type != ISIS_TLV_IS_ALIAS_ID) { /* the Alias TLV Metric field is implicit 0 */ if (!ND_TTEST_3(tptr)) /* and is therefore skipped */ return(0); - ND_PRINT((ndo, ", Metric: %d", EXTRACT_BE_U_3(tptr))); + if (tlv_remaining < 3) + return(0); + ND_PRINT((ndo, ", Metric: %u", EXTRACT_BE_U_3(tptr))); tptr+=3; + tlv_remaining-=3; } if (!ND_TTEST_1(tptr)) return(0); + if (tlv_remaining < 1) + return(0); subtlv_sum_len=EXTRACT_U_1(tptr); /* read out subTLV length */ tptr++; + tlv_remaining--; proc_bytes=NODE_ID_LEN+3+1; ND_PRINT((ndo, ", %ssub-TLVs present",subtlv_sum_len ? "" : "no ")); if (subtlv_sum_len) { ND_PRINT((ndo, " (%u)", subtlv_sum_len)); - while (subtlv_sum_len>0) { + /* prepend the indent string */ + snprintf(ident_buffer, sizeof(ident_buffer), "%s ",ident); + ident = ident_buffer; + while (subtlv_sum_len != 0) { if (!ND_TTEST_2(tptr)) return(0); + if (tlv_remaining < 2) { + ND_PRINT((ndo, "%sRemaining data in TLV shorter than a subTLV header",ident)); + proc_bytes += tlv_remaining; + break; + } + if (subtlv_sum_len < 2) { + ND_PRINT((ndo, "%sRemaining data in subTLVs shorter than a subTLV header",ident)); + proc_bytes += subtlv_sum_len; + break; + } subtlv_type=EXTRACT_U_1(tptr); subtlv_len=EXTRACT_U_1(tptr + 1); - tptr+=2; - /* prepend the indent string */ - snprintf(ident_buffer, sizeof(ident_buffer), "%s ",ident); - if (!isis_print_is_reach_subtlv(ndo, tptr, subtlv_type, subtlv_len, ident_buffer)) - return(0); - tptr+=subtlv_len; - subtlv_sum_len-=(subtlv_len+2); - proc_bytes+=(subtlv_len+2); + tptr += 2; + tlv_remaining -= 2; + subtlv_sum_len -= 2; + proc_bytes += 2; + ND_PRINT((ndo, "%s%s subTLV #%u, length: %u", + ident, tok2str(isis_ext_is_reach_subtlv_values, "unknown", subtlv_type), + subtlv_type, subtlv_len)); + + if (subtlv_sum_len < subtlv_len) { + ND_PRINT((ndo, " (remaining data in subTLVs shorter than the current subTLV)")); + proc_bytes += subtlv_sum_len; + break; + } + + if (tlv_remaining < subtlv_len) { + ND_PRINT((ndo, " (> remaining tlv length)")); + proc_bytes += tlv_remaining; + break; + } + + ND_TCHECK_LEN(tptr, subtlv_len); + + switch(subtlv_type) { + case ISIS_SUBTLV_EXT_IS_REACH_ADMIN_GROUP: + case ISIS_SUBTLV_EXT_IS_REACH_LINK_LOCAL_REMOTE_ID: + case ISIS_SUBTLV_EXT_IS_REACH_LINK_REMOTE_ID: + if (subtlv_len >= 4) { + ND_PRINT((ndo, ", 0x%08x", EXTRACT_BE_U_4(tptr))); + if (subtlv_len == 8) /* rfc4205 */ + ND_PRINT((ndo, ", 0x%08x", EXTRACT_BE_U_4(tptr + 4))); + } + break; + case ISIS_SUBTLV_EXT_IS_REACH_IPV4_INTF_ADDR: + case ISIS_SUBTLV_EXT_IS_REACH_IPV4_NEIGHBOR_ADDR: + if (subtlv_len >= sizeof(struct in_addr)) + ND_PRINT((ndo, ", %s", ipaddr_string(ndo, tptr))); + break; + case ISIS_SUBTLV_EXT_IS_REACH_MAX_LINK_BW : + case ISIS_SUBTLV_EXT_IS_REACH_RESERVABLE_BW: + if (subtlv_len >= 4) { + bw.i = EXTRACT_BE_U_4(tptr); + ND_PRINT((ndo, ", %.3f Mbps", bw.f * 8 / 1000000)); + } + break; + case ISIS_SUBTLV_EXT_IS_REACH_UNRESERVED_BW : + if (subtlv_len >= 32) { + for (te_class = 0; te_class < 8; te_class++) { + bw.i = EXTRACT_BE_U_4(tptr); + ND_PRINT((ndo, "%s TE-Class %u: %.3f Mbps", + ident, + te_class, + bw.f * 8 / 1000000)); + tptr += 4; + subtlv_len -= 4; + subtlv_sum_len -= 4; + proc_bytes += 4; + } + } + break; + case ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS: /* fall through */ + case ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS_OLD: + if (subtlv_len == 0) + break; + ND_PRINT((ndo, "%sBandwidth Constraints Model ID: %s (%u)", + ident, + tok2str(diffserv_te_bc_values, "unknown", EXTRACT_U_1(tptr)), + EXTRACT_U_1(tptr))); + tptr++; + subtlv_len--; + subtlv_sum_len--; + proc_bytes++; + /* decode BCs until the subTLV ends */ + for (te_class = 0; subtlv_len != 0; te_class++) { + if (subtlv_len < 4) + break; + bw.i = EXTRACT_BE_U_4(tptr); + ND_PRINT((ndo, "%s Bandwidth constraint CT%u: %.3f Mbps", + ident, + te_class, + bw.f * 8 / 1000000)); + tptr += 4; + subtlv_len -= 4; + subtlv_sum_len -= 4; + proc_bytes += 4; + } + break; + case ISIS_SUBTLV_EXT_IS_REACH_TE_METRIC: + if (subtlv_len >= 3) + ND_PRINT((ndo, ", %u", EXTRACT_BE_U_3(tptr))); + break; + case ISIS_SUBTLV_EXT_IS_REACH_LINK_ATTRIBUTE: + if (subtlv_len == 2) { + ND_PRINT((ndo, ", [ %s ] (0x%04x)", + bittok2str(isis_subtlv_link_attribute_values, + "Unknown", + EXTRACT_BE_U_2(tptr)), + EXTRACT_BE_U_2(tptr))); + } + break; + case ISIS_SUBTLV_EXT_IS_REACH_LINK_PROTECTION_TYPE: + if (subtlv_len >= 2) { + ND_PRINT((ndo, ", %s, Priority %u", + bittok2str(gmpls_link_prot_values, "none", EXTRACT_U_1(tptr)), + EXTRACT_U_1(tptr + 1))); + } + break; + case ISIS_SUBTLV_SPB_METRIC: + if (subtlv_len >= 6) { + ND_PRINT((ndo, ", LM: %u", EXTRACT_BE_U_3(tptr))); + tptr += 3; + subtlv_len -= 3; + subtlv_sum_len -= 3; + proc_bytes += 3; + ND_PRINT((ndo, ", P: %u", EXTRACT_U_1(tptr))); + tptr++; + subtlv_len--; + subtlv_sum_len--; + proc_bytes++; + ND_PRINT((ndo, ", P-ID: %u", EXTRACT_BE_U_2(tptr))); + } + break; + case ISIS_SUBTLV_EXT_IS_REACH_INTF_SW_CAP_DESCR: + if (subtlv_len >= 36) { + gmpls_switch_cap = EXTRACT_U_1(tptr); + ND_PRINT((ndo, "%s Interface Switching Capability:%s", + ident, + tok2str(gmpls_switch_cap_values, "Unknown", gmpls_switch_cap))); + ND_PRINT((ndo, ", LSP Encoding: %s", + tok2str(gmpls_encoding_values, "Unknown", EXTRACT_U_1((tptr + 1))))); + tptr += 4; + subtlv_len -= 4; + subtlv_sum_len -= 4; + proc_bytes += 4; + ND_PRINT((ndo, "%s Max LSP Bandwidth:", ident)); + for (priority_level = 0; priority_level < 8; priority_level++) { + bw.i = EXTRACT_BE_U_4(tptr); + ND_PRINT((ndo, "%s priority level %u: %.3f Mbps", + ident, + priority_level, + bw.f * 8 / 1000000)); + tptr += 4; + subtlv_len -= 4; + subtlv_sum_len -= 4; + proc_bytes += 4; + } + switch (gmpls_switch_cap) { + case GMPLS_PSC1: + case GMPLS_PSC2: + case GMPLS_PSC3: + case GMPLS_PSC4: + if (subtlv_len < 6) + break; + bw.i = EXTRACT_BE_U_4(tptr); + ND_PRINT((ndo, "%s Min LSP Bandwidth: %.3f Mbps", ident, bw.f * 8 / 1000000)); + ND_PRINT((ndo, "%s Interface MTU: %u", ident, EXTRACT_BE_U_2(tptr + 4))); + break; + case GMPLS_TSC: + if (subtlv_len < 8) + break; + bw.i = EXTRACT_BE_U_4(tptr); + ND_PRINT((ndo, "%s Min LSP Bandwidth: %.3f Mbps", ident, bw.f * 8 / 1000000)); + ND_PRINT((ndo, "%s Indication %s", ident, + tok2str(gmpls_switch_cap_tsc_indication_values, "Unknown (%u)", EXTRACT_U_1((tptr + 4))))); + break; + default: + /* there is some optional stuff left to decode but this is as of yet + not specified so just lets hexdump what is left */ + if (subtlv_len != 0) { + if (!print_unknown_data(ndo, tptr, "\n\t\t ", subtlv_len)) + return(0); + } + } + } + break; + default: + if (!print_unknown_data(ndo, tptr, "\n\t\t ", subtlv_len)) + return(0); + break; + } + + tptr += subtlv_len; + tlv_remaining -= subtlv_len; + subtlv_sum_len -= subtlv_len; + proc_bytes += subtlv_len; } } return(proc_bytes); + +trunc: + return(0); } /* @@ -2142,7 +2195,7 @@ isis_print_extd_ip_reach(netdissect_options *ndo, if ((afi == AF_INET && ISIS_MASK_TLV_EXTD_IP_SUBTLV(status_byte)) || (afi == AF_INET6 && ISIS_MASK_TLV_EXTD_IP6_SUBTLV(status_byte)) - ) { + ) { /* assume that one prefix can hold more than one subTLV - therefore the first byte must reflect the aggregate bytecount of the subTLVs for this prefix @@ -2207,7 +2260,8 @@ isis_print(netdissect_options *ndo, const struct isis_tlv_is_reach *tlv_is_reach; const struct isis_tlv_es_reach *tlv_es_reach; - uint8_t pdu_type, max_area, id_length, tlv_type, tlv_len, tmp, alen, lan_alen, prefix_len; + uint8_t version, pdu_version, fixed_len; + uint8_t pdu_type, pdu_max_area, max_area, pdu_id_length, id_length, tlv_type, tlv_len, tmp, alen, lan_alen, prefix_len; uint8_t ext_is_len, ext_ip_len, mt_len; uint8_t isis_subtlv_idrp; const uint8_t *optr, *pptr, *tptr; @@ -2237,34 +2291,38 @@ isis_print(netdissect_options *ndo, * Sanity checking of the header. */ - if (isis_header->version != ISIS_VERSION) { - ND_PRINT((ndo, "version %d packet not supported", isis_header->version)); + version = EXTRACT_U_1(isis_header->version); + if (version != ISIS_VERSION) { + ND_PRINT((ndo, "version %u packet not supported", version)); return (0); } - if ((isis_header->id_length != SYSTEM_ID_LEN) && (isis_header->id_length != 0)) { - ND_PRINT((ndo, "system ID length of %d is not supported", - isis_header->id_length)); + pdu_id_length = EXTRACT_U_1(isis_header->id_length); + if ((pdu_id_length != SYSTEM_ID_LEN) && (pdu_id_length != 0)) { + ND_PRINT((ndo, "system ID length of %u is not supported", + pdu_id_length)); return (0); } - if (isis_header->pdu_version != ISIS_VERSION) { - ND_PRINT((ndo, "version %d packet not supported", isis_header->pdu_version)); + pdu_version = EXTRACT_U_1(isis_header->pdu_version); + if (pdu_version != ISIS_VERSION) { + ND_PRINT((ndo, "version %u packet not supported", pdu_version)); return (0); } - if (length < isis_header->fixed_len) { - ND_PRINT((ndo, "fixed header length %u > packet length %u", isis_header->fixed_len, length)); + fixed_len = EXTRACT_U_1(isis_header->fixed_len); + if (length < fixed_len) { + ND_PRINT((ndo, "fixed header length %u > packet length %u", fixed_len, length)); return (0); } - if (isis_header->fixed_len < ISIS_COMMON_HEADER_SIZE) { - ND_PRINT((ndo, "fixed header length %u < minimum header size %u", isis_header->fixed_len, (u_int)ISIS_COMMON_HEADER_SIZE)); + if (fixed_len < ISIS_COMMON_HEADER_SIZE) { + ND_PRINT((ndo, "fixed header length %u < minimum header size %u", fixed_len, (u_int)ISIS_COMMON_HEADER_SIZE)); return (0); } - max_area = isis_header->max_area; - switch(max_area) { + pdu_max_area = EXTRACT_U_1(isis_header->max_area); + switch(pdu_max_area) { case 0: max_area = 3; /* silly shit */ break; @@ -2272,11 +2330,11 @@ isis_print(netdissect_options *ndo, ND_PRINT((ndo, "bad packet -- 255 areas")); return (0); default: + max_area = pdu_max_area; break; } - id_length = isis_header->id_length; - switch(id_length) { + switch(pdu_id_length) { case 0: id_length = 6; /* silly shit again */ break; @@ -2288,11 +2346,13 @@ isis_print(netdissect_options *ndo, case 6: case 7: case 8: + id_length = pdu_id_length; break; case 255: id_length = 0; /* entirely useless */ break; default: + id_length = pdu_id_length; break; } @@ -2302,7 +2362,7 @@ isis_print(netdissect_options *ndo, return (0); } - pdu_type=isis_header->pdu_type; + pdu_type = EXTRACT_U_1(isis_header->pdu_type); /* in non-verbose mode print the basic PDU Type plus PDU specific brief information*/ if (ndo->ndo_vflag == 0) { @@ -2317,13 +2377,13 @@ isis_print(netdissect_options *ndo, tok2str(isis_pdu_values, "unknown, type %u", pdu_type), - isis_header->fixed_len, - isis_header->version, - isis_header->pdu_version, + fixed_len, + version, + pdu_version, id_length, - isis_header->id_length, + pdu_id_length, max_area, - isis_header->max_area)); + pdu_max_area)); if (ndo->ndo_vflag > 1) { if (!print_unknown_data(ndo, optr, "\n\t", 8)) /* provide the _o_riginal pointer */ @@ -2335,9 +2395,9 @@ isis_print(netdissect_options *ndo, case ISIS_PDU_L1_LAN_IIH: case ISIS_PDU_L2_LAN_IIH: - if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE)) { + if (fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE)) { ND_PRINT((ndo, ", bogus fixed header length %u should be %lu", - isis_header->fixed_len, (unsigned long)(ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE))); + fixed_len, (unsigned long)(ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE))); return (0); } ND_TCHECK(*header_iih_lan); @@ -2348,7 +2408,7 @@ isis_print(netdissect_options *ndo, isis_print_id(header_iih_lan->source_id, SYSTEM_ID_LEN))); ND_PRINT((ndo, ", lan-id %s, prio %u", isis_print_id(header_iih_lan->lan_id,NODE_ID_LEN), - header_iih_lan->priority)); + EXTRACT_U_1(header_iih_lan->priority))); ND_PRINT((ndo, ", length %u", length)); return (1); } @@ -2363,11 +2423,11 @@ isis_print(netdissect_options *ndo, EXTRACT_BE_U_2(header_iih_lan->holding_time), tok2str(isis_iih_circuit_type_values, "unknown circuit type 0x%02x", - header_iih_lan->circuit_type))); + EXTRACT_U_1(header_iih_lan->circuit_type)))); ND_PRINT((ndo, "\n\t lan-id: %s, Priority: %u, PDU length: %u", isis_print_id(header_iih_lan->lan_id, NODE_ID_LEN), - (header_iih_lan->priority) & ISIS_LAN_PRIORITY_MASK, + EXTRACT_U_1(header_iih_lan->priority) & ISIS_LAN_PRIORITY_MASK, pdu_len)); if (ndo->ndo_vflag > 1) { @@ -2380,9 +2440,9 @@ isis_print(netdissect_options *ndo, break; case ISIS_PDU_PTP_IIH: - if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE)) { + if (fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE)) { ND_PRINT((ndo, ", bogus fixed header length %u should be %lu", - isis_header->fixed_len, (unsigned long)(ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE))); + fixed_len, (unsigned long)(ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE))); return (0); } ND_TCHECK(*header_iih_ptp); @@ -2404,10 +2464,10 @@ isis_print(netdissect_options *ndo, EXTRACT_BE_U_2(header_iih_ptp->holding_time), tok2str(isis_iih_circuit_type_values, "unknown circuit type 0x%02x", - header_iih_ptp->circuit_type))); + EXTRACT_U_1(header_iih_ptp->circuit_type)))); ND_PRINT((ndo, "\n\t circuit-id: 0x%02x, PDU length: %u", - header_iih_ptp->circuit_id, + EXTRACT_U_1(header_iih_ptp->circuit_id), pdu_len)); if (ndo->ndo_vflag > 1) { @@ -2421,9 +2481,9 @@ isis_print(netdissect_options *ndo, case ISIS_PDU_L1_LSP: case ISIS_PDU_L2_LSP: - if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE)) { + if (fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE)) { ND_PRINT((ndo, ", bogus fixed header length %u should be %lu", - isis_header->fixed_len, (unsigned long)ISIS_LSP_HEADER_SIZE)); + fixed_len, (unsigned long)ISIS_LSP_HEADER_SIZE)); return (0); } ND_TCHECK(*header_lsp); @@ -2479,9 +2539,9 @@ isis_print(netdissect_options *ndo, case ISIS_PDU_L1_CSNP: case ISIS_PDU_L2_CSNP: - if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE)) { + if (fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE)) { ND_PRINT((ndo, ", bogus fixed header length %u should be %lu", - isis_header->fixed_len, (unsigned long)(ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE))); + fixed_len, (unsigned long)(ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE))); return (0); } ND_TCHECK(*header_csnp); @@ -2517,9 +2577,9 @@ isis_print(netdissect_options *ndo, case ISIS_PDU_L1_PSNP: case ISIS_PDU_L2_PSNP: - if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE)) { + if (fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE)) { ND_PRINT((ndo, "- bogus fixed header length %u should be %lu", - isis_header->fixed_len, (unsigned long)(ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE))); + fixed_len, (unsigned long)(ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE))); return (0); } ND_TCHECK(*header_psnp); @@ -2645,7 +2705,7 @@ isis_print(netdissect_options *ndo, tptr+=mt_len; tmp-=mt_len; while (tmp >= 2+NODE_ID_LEN+3+1) { - ext_is_len = isis_print_ext_is_reach(ndo, tptr, "\n\t ", tlv_type); + ext_is_len = isis_print_ext_is_reach(ndo, tptr, "\n\t ", tlv_type, tmp); if (ext_is_len == 0) /* did something go wrong ? */ goto trunctlv; @@ -2656,7 +2716,7 @@ isis_print(netdissect_options *ndo, case ISIS_TLV_IS_ALIAS_ID: while (tmp >= NODE_ID_LEN+1) { /* is it worth attempting a decode ? */ - ext_is_len = isis_print_ext_is_reach(ndo, tptr, "\n\t ", tlv_type); + ext_is_len = isis_print_ext_is_reach(ndo, tptr, "\n\t ", tlv_type, tmp); if (ext_is_len == 0) /* did something go wrong ? */ goto trunctlv; tmp-=ext_is_len; @@ -2666,7 +2726,7 @@ isis_print(netdissect_options *ndo, case ISIS_TLV_EXT_IS_REACH: while (tmp >= NODE_ID_LEN+3+1) { /* is it worth attempting a decode ? */ - ext_is_len = isis_print_ext_is_reach(ndo, tptr, "\n\t ", tlv_type); + ext_is_len = isis_print_ext_is_reach(ndo, tptr, "\n\t ", tlv_type, tmp); if (ext_is_len == 0) /* did something go wrong ? */ goto trunctlv; tmp-=ext_is_len; @@ -2867,7 +2927,7 @@ isis_print(netdissect_options *ndo, { ND_TCHECK_2(tptr); - ND_PRINT((ndo, "\n\t RES: %d, MTID(s): %d", + ND_PRINT((ndo, "\n\t RES: %u, MTID(s): %u", (EXTRACT_BE_U_2(tptr) >> 12), (EXTRACT_BE_U_2(tptr) & 0x0fff))); @@ -2884,7 +2944,7 @@ isis_print(netdissect_options *ndo, ND_TCHECK_2(tptr); - ND_PRINT((ndo, "\n\t O: %d, RES: %d, MTID(s): %d", + ND_PRINT((ndo, "\n\t O: %u, RES: %u, MTID(s): %u", (EXTRACT_BE_U_2(tptr) >> 15) & 0x01, (EXTRACT_BE_U_2(tptr) >> 12) & 0x07, EXTRACT_BE_U_2(tptr) & 0x0fff));