X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/00ecef01d7dd1f53c58ddeb0f906f3ec602283f0..7b4e6191a77bdaff6f04af00b93eafb718b33662:/print-sflow.c diff --git a/print-sflow.c b/print-sflow.c index 78aaafb6..71ca2663 100644 --- a/print-sflow.c +++ b/print-sflow.c @@ -19,7 +19,7 @@ /* \summary: sFlow protocol printer */ -/* specification: http://www.sflow.org/developers/specifications.php */ +/* specification: https://sflow.org/developers/specifications.php */ #ifdef HAVE_CONFIG_H #include @@ -27,6 +27,7 @@ #include "netdissect-stdinc.h" +#define ND_LONGJMP_FROM_TCHECK #include "netdissect.h" #include "extract.h" #include "addrtoname.h" @@ -64,6 +65,16 @@ struct sflow_datagram_t { nd_uint32_t samples; }; +struct sflow_v6_datagram_t { + nd_uint32_t version; + nd_uint32_t ip_version; + nd_ipv6 agent; + nd_uint32_t agent_id; + nd_uint32_t seqnum; + nd_uint32_t uptime; + nd_uint32_t samples; +}; + struct sflow_sample_header { nd_uint32_t format; nd_uint32_t len; @@ -308,43 +319,39 @@ print_sflow_counter_generic(netdissect_options *ndo, return 1; sflow_gen_counter = (const struct sflow_generic_counter_t *)pointer; - ND_TCHECK_SIZE(sflow_gen_counter); ND_PRINT("\n\t ifindex %u, iftype %u, ifspeed %" PRIu64 ", ifdirection %u (%s)", - EXTRACT_BE_U_4(sflow_gen_counter->ifindex), - EXTRACT_BE_U_4(sflow_gen_counter->iftype), - EXTRACT_BE_U_8(sflow_gen_counter->ifspeed), - EXTRACT_BE_U_4(sflow_gen_counter->ifdirection), + GET_BE_U_4(sflow_gen_counter->ifindex), + GET_BE_U_4(sflow_gen_counter->iftype), + GET_BE_U_8(sflow_gen_counter->ifspeed), + GET_BE_U_4(sflow_gen_counter->ifdirection), tok2str(sflow_iface_direction_values, "Unknown", - EXTRACT_BE_U_4(sflow_gen_counter->ifdirection))); + GET_BE_U_4(sflow_gen_counter->ifdirection))); ND_PRINT("\n\t ifstatus %u, adminstatus: %s, operstatus: %s", - EXTRACT_BE_U_4(sflow_gen_counter->ifstatus), - EXTRACT_BE_U_4(sflow_gen_counter->ifstatus)&1 ? "up" : "down", - (EXTRACT_BE_U_4(sflow_gen_counter->ifstatus)>>1)&1 ? "up" : "down"); + GET_BE_U_4(sflow_gen_counter->ifstatus), + GET_BE_U_4(sflow_gen_counter->ifstatus)&1 ? "up" : "down", + (GET_BE_U_4(sflow_gen_counter->ifstatus)>>1)&1 ? "up" : "down"); ND_PRINT("\n\t In octets %" PRIu64 ", unicast pkts %u, multicast pkts %u, broadcast pkts %u, discards %u", - EXTRACT_BE_U_8(sflow_gen_counter->ifinoctets), - EXTRACT_BE_U_4(sflow_gen_counter->ifinunicastpkts), - EXTRACT_BE_U_4(sflow_gen_counter->ifinmulticastpkts), - EXTRACT_BE_U_4(sflow_gen_counter->ifinbroadcastpkts), - EXTRACT_BE_U_4(sflow_gen_counter->ifindiscards)); + GET_BE_U_8(sflow_gen_counter->ifinoctets), + GET_BE_U_4(sflow_gen_counter->ifinunicastpkts), + GET_BE_U_4(sflow_gen_counter->ifinmulticastpkts), + GET_BE_U_4(sflow_gen_counter->ifinbroadcastpkts), + GET_BE_U_4(sflow_gen_counter->ifindiscards)); ND_PRINT("\n\t In errors %u, unknown protos %u", - EXTRACT_BE_U_4(sflow_gen_counter->ifinerrors), - EXTRACT_BE_U_4(sflow_gen_counter->ifinunkownprotos)); + GET_BE_U_4(sflow_gen_counter->ifinerrors), + GET_BE_U_4(sflow_gen_counter->ifinunkownprotos)); ND_PRINT("\n\t Out octets %" PRIu64 ", unicast pkts %u, multicast pkts %u, broadcast pkts %u, discards %u", - EXTRACT_BE_U_8(sflow_gen_counter->ifoutoctets), - EXTRACT_BE_U_4(sflow_gen_counter->ifoutunicastpkts), - EXTRACT_BE_U_4(sflow_gen_counter->ifoutmulticastpkts), - EXTRACT_BE_U_4(sflow_gen_counter->ifoutbroadcastpkts), - EXTRACT_BE_U_4(sflow_gen_counter->ifoutdiscards)); + GET_BE_U_8(sflow_gen_counter->ifoutoctets), + GET_BE_U_4(sflow_gen_counter->ifoutunicastpkts), + GET_BE_U_4(sflow_gen_counter->ifoutmulticastpkts), + GET_BE_U_4(sflow_gen_counter->ifoutbroadcastpkts), + GET_BE_U_4(sflow_gen_counter->ifoutdiscards)); ND_PRINT("\n\t Out errors %u, promisc mode %u", - EXTRACT_BE_U_4(sflow_gen_counter->ifouterrors), - EXTRACT_BE_U_4(sflow_gen_counter->ifpromiscmode)); + GET_BE_U_4(sflow_gen_counter->ifouterrors), + GET_BE_U_4(sflow_gen_counter->ifpromiscmode)); return 0; - -trunc: - return 1; } static int @@ -357,28 +364,24 @@ print_sflow_counter_ethernet(netdissect_options *ndo, return 1; sflow_eth_counter = (const struct sflow_ethernet_counter_t *)pointer; - ND_TCHECK_SIZE(sflow_eth_counter); ND_PRINT("\n\t align errors %u, fcs errors %u, single collision %u, multiple collision %u, test error %u", - EXTRACT_BE_U_4(sflow_eth_counter->alignerrors), - EXTRACT_BE_U_4(sflow_eth_counter->fcserrors), - EXTRACT_BE_U_4(sflow_eth_counter->single_collision_frames), - EXTRACT_BE_U_4(sflow_eth_counter->multiple_collision_frames), - EXTRACT_BE_U_4(sflow_eth_counter->test_errors)); + GET_BE_U_4(sflow_eth_counter->alignerrors), + GET_BE_U_4(sflow_eth_counter->fcserrors), + GET_BE_U_4(sflow_eth_counter->single_collision_frames), + GET_BE_U_4(sflow_eth_counter->multiple_collision_frames), + GET_BE_U_4(sflow_eth_counter->test_errors)); ND_PRINT("\n\t deferred %u, late collision %u, excessive collision %u, mac trans error %u", - EXTRACT_BE_U_4(sflow_eth_counter->deferred_transmissions), - EXTRACT_BE_U_4(sflow_eth_counter->late_collisions), - EXTRACT_BE_U_4(sflow_eth_counter->excessive_collisions), - EXTRACT_BE_U_4(sflow_eth_counter->mac_transmit_errors)); + GET_BE_U_4(sflow_eth_counter->deferred_transmissions), + GET_BE_U_4(sflow_eth_counter->late_collisions), + GET_BE_U_4(sflow_eth_counter->excessive_collisions), + GET_BE_U_4(sflow_eth_counter->mac_transmit_errors)); ND_PRINT("\n\t carrier error %u, frames too long %u, mac receive errors %u, symbol errors %u", - EXTRACT_BE_U_4(sflow_eth_counter->carrier_sense_errors), - EXTRACT_BE_U_4(sflow_eth_counter->frame_too_longs), - EXTRACT_BE_U_4(sflow_eth_counter->mac_receive_errors), - EXTRACT_BE_U_4(sflow_eth_counter->symbol_errors)); + GET_BE_U_4(sflow_eth_counter->carrier_sense_errors), + GET_BE_U_4(sflow_eth_counter->frame_too_longs), + GET_BE_U_4(sflow_eth_counter->mac_receive_errors), + GET_BE_U_4(sflow_eth_counter->symbol_errors)); return 0; - -trunc: - return 1; } static int @@ -398,34 +401,30 @@ print_sflow_counter_basevg(netdissect_options *ndo, return 1; sflow_100basevg_counter = (const struct sflow_100basevg_counter_t *)pointer; - ND_TCHECK_SIZE(sflow_100basevg_counter); ND_PRINT("\n\t in high prio frames %u, in high prio octets %" PRIu64, - EXTRACT_BE_U_4(sflow_100basevg_counter->in_highpriority_frames), - EXTRACT_BE_U_8(sflow_100basevg_counter->in_highpriority_octets)); + GET_BE_U_4(sflow_100basevg_counter->in_highpriority_frames), + GET_BE_U_8(sflow_100basevg_counter->in_highpriority_octets)); ND_PRINT("\n\t in norm prio frames %u, in norm prio octets %" PRIu64, - EXTRACT_BE_U_4(sflow_100basevg_counter->in_normpriority_frames), - EXTRACT_BE_U_8(sflow_100basevg_counter->in_normpriority_octets)); + GET_BE_U_4(sflow_100basevg_counter->in_normpriority_frames), + GET_BE_U_8(sflow_100basevg_counter->in_normpriority_octets)); ND_PRINT("\n\t in ipm errors %u, oversized %u, in data errors %u, null addressed frames %u", - EXTRACT_BE_U_4(sflow_100basevg_counter->in_ipmerrors), - EXTRACT_BE_U_4(sflow_100basevg_counter->in_oversized), - EXTRACT_BE_U_4(sflow_100basevg_counter->in_data_errors), - EXTRACT_BE_U_4(sflow_100basevg_counter->in_null_addressed_frames)); + GET_BE_U_4(sflow_100basevg_counter->in_ipmerrors), + GET_BE_U_4(sflow_100basevg_counter->in_oversized), + GET_BE_U_4(sflow_100basevg_counter->in_data_errors), + GET_BE_U_4(sflow_100basevg_counter->in_null_addressed_frames)); ND_PRINT("\n\t out high prio frames %u, out high prio octets %" PRIu64 ", trans into frames %u", - EXTRACT_BE_U_4(sflow_100basevg_counter->out_highpriority_frames), - EXTRACT_BE_U_8(sflow_100basevg_counter->out_highpriority_octets), - EXTRACT_BE_U_4(sflow_100basevg_counter->transitioninto_frames)); + GET_BE_U_4(sflow_100basevg_counter->out_highpriority_frames), + GET_BE_U_8(sflow_100basevg_counter->out_highpriority_octets), + GET_BE_U_4(sflow_100basevg_counter->transitioninto_frames)); ND_PRINT("\n\t in hc high prio octets %" PRIu64 ", in hc norm prio octets %" PRIu64 ", out hc high prio octets %" PRIu64, - EXTRACT_BE_U_8(sflow_100basevg_counter->hc_in_highpriority_octets), - EXTRACT_BE_U_8(sflow_100basevg_counter->hc_in_normpriority_octets), - EXTRACT_BE_U_8(sflow_100basevg_counter->hc_out_highpriority_octets)); + GET_BE_U_8(sflow_100basevg_counter->hc_in_highpriority_octets), + GET_BE_U_8(sflow_100basevg_counter->hc_in_normpriority_octets), + GET_BE_U_8(sflow_100basevg_counter->hc_out_highpriority_octets)); return 0; - -trunc: - return 1; } static int @@ -438,20 +437,16 @@ print_sflow_counter_vlan(netdissect_options *ndo, return 1; sflow_vlan_counter = (const struct sflow_vlan_counter_t *)pointer; - ND_TCHECK_SIZE(sflow_vlan_counter); ND_PRINT("\n\t vlan_id %u, octets %" PRIu64 ", unicast_pkt %u, multicast_pkt %u, broadcast_pkt %u, discards %u", - EXTRACT_BE_U_4(sflow_vlan_counter->vlan_id), - EXTRACT_BE_U_8(sflow_vlan_counter->octets), - EXTRACT_BE_U_4(sflow_vlan_counter->unicast_pkt), - EXTRACT_BE_U_4(sflow_vlan_counter->multicast_pkt), - EXTRACT_BE_U_4(sflow_vlan_counter->broadcast_pkt), - EXTRACT_BE_U_4(sflow_vlan_counter->discards)); + GET_BE_U_4(sflow_vlan_counter->vlan_id), + GET_BE_U_8(sflow_vlan_counter->octets), + GET_BE_U_4(sflow_vlan_counter->unicast_pkt), + GET_BE_U_4(sflow_vlan_counter->multicast_pkt), + GET_BE_U_4(sflow_vlan_counter->broadcast_pkt), + GET_BE_U_4(sflow_vlan_counter->discards)); return 0; - -trunc: - return 1; } struct sflow_processor_counter_t { @@ -472,19 +467,15 @@ print_sflow_counter_processor(netdissect_options *ndo, return 1; sflow_processor_counter = (const struct sflow_processor_counter_t *)pointer; - ND_TCHECK_SIZE(sflow_processor_counter); ND_PRINT("\n\t 5sec %u, 1min %u, 5min %u, total_mem %" PRIu64 ", total_mem %" PRIu64, - EXTRACT_BE_U_4(sflow_processor_counter->five_sec_util), - EXTRACT_BE_U_4(sflow_processor_counter->one_min_util), - EXTRACT_BE_U_4(sflow_processor_counter->five_min_util), - EXTRACT_BE_U_8(sflow_processor_counter->total_memory), - EXTRACT_BE_U_8(sflow_processor_counter->free_memory)); + GET_BE_U_4(sflow_processor_counter->five_sec_util), + GET_BE_U_4(sflow_processor_counter->one_min_util), + GET_BE_U_4(sflow_processor_counter->five_min_util), + GET_BE_U_8(sflow_processor_counter->total_memory), + GET_BE_U_8(sflow_processor_counter->free_memory)); return 0; - -trunc: - return 1; } static int @@ -508,12 +499,11 @@ sflow_print_counter_records(netdissect_options *ndo, if (tlen < sizeof(struct sflow_counter_record_t)) return 1; sflow_counter_record = (const struct sflow_counter_record_t *)tptr; - ND_TCHECK_SIZE(sflow_counter_record); - enterprise = EXTRACT_BE_U_4(sflow_counter_record->format); + enterprise = GET_BE_U_4(sflow_counter_record->format); counter_type = enterprise & 0x0FFF; enterprise = enterprise >> 20; - counter_len = EXTRACT_BE_U_4(sflow_counter_record->length); + counter_len = GET_BE_U_4(sflow_counter_record->length); ND_PRINT("\n\t enterprise %u, %s (%u) length %u", enterprise, (enterprise == 0) ? tok2str(sflow_counter_type_values,"Unknown",counter_type) : "Unknown", @@ -564,9 +554,6 @@ sflow_print_counter_records(netdissect_options *ndo, } return 0; - -trunc: - return 1; } static int @@ -580,22 +567,18 @@ sflow_print_counter_sample(netdissect_options *ndo, return 1; sflow_counter_sample = (const struct sflow_counter_sample_t *)pointer; - ND_TCHECK_SIZE(sflow_counter_sample); - nrecords = EXTRACT_BE_U_4(sflow_counter_sample->records); + nrecords = GET_BE_U_4(sflow_counter_sample->records); ND_PRINT(" seqnum %u, type %u, idx %u, records %u", - EXTRACT_BE_U_4(sflow_counter_sample->seqnum), - EXTRACT_U_1(sflow_counter_sample->type), - EXTRACT_BE_U_3(sflow_counter_sample->index), + GET_BE_U_4(sflow_counter_sample->seqnum), + GET_U_1(sflow_counter_sample->type), + GET_BE_U_3(sflow_counter_sample->index), nrecords); return sflow_print_counter_records(ndo, pointer + sizeof(struct sflow_counter_sample_t), len - sizeof(struct sflow_counter_sample_t), nrecords); - -trunc: - return 1; } static int @@ -610,22 +593,18 @@ sflow_print_expanded_counter_sample(netdissect_options *ndo, return 1; sflow_expanded_counter_sample = (const struct sflow_expanded_counter_sample_t *)pointer; - ND_TCHECK_SIZE(sflow_expanded_counter_sample); - nrecords = EXTRACT_BE_U_4(sflow_expanded_counter_sample->records); + nrecords = GET_BE_U_4(sflow_expanded_counter_sample->records); ND_PRINT(" seqnum %u, type %u, idx %u, records %u", - EXTRACT_BE_U_4(sflow_expanded_counter_sample->seqnum), - EXTRACT_BE_U_4(sflow_expanded_counter_sample->type), - EXTRACT_BE_U_4(sflow_expanded_counter_sample->index), + GET_BE_U_4(sflow_expanded_counter_sample->seqnum), + GET_BE_U_4(sflow_expanded_counter_sample->type), + GET_BE_U_4(sflow_expanded_counter_sample->index), nrecords); return sflow_print_counter_records(ndo, pointer + sizeof(struct sflow_expanded_counter_sample_t), len - sizeof(struct sflow_expanded_counter_sample_t), nrecords); - -trunc: - return 1; } static int @@ -638,21 +617,17 @@ print_sflow_raw_packet(netdissect_options *ndo, return 1; sflow_flow_raw = (const struct sflow_expanded_flow_raw_t *)pointer; - ND_TCHECK_SIZE(sflow_flow_raw); ND_PRINT("\n\t protocol %s (%u), length %u, stripped bytes %u, header_size %u", - tok2str(sflow_flow_raw_protocol_values,"Unknown",EXTRACT_BE_U_4(sflow_flow_raw->protocol)), - EXTRACT_BE_U_4(sflow_flow_raw->protocol), - EXTRACT_BE_U_4(sflow_flow_raw->length), - EXTRACT_BE_U_4(sflow_flow_raw->stripped_bytes), - EXTRACT_BE_U_4(sflow_flow_raw->header_size)); + tok2str(sflow_flow_raw_protocol_values,"Unknown",GET_BE_U_4(sflow_flow_raw->protocol)), + GET_BE_U_4(sflow_flow_raw->protocol), + GET_BE_U_4(sflow_flow_raw->length), + GET_BE_U_4(sflow_flow_raw->stripped_bytes), + GET_BE_U_4(sflow_flow_raw->header_size)); /* QUESTION - should we attempt to print the raw header itself? - assuming of course there is wnough data present to do so... */ + assuming of course there is enough data present to do so... */ return 0; - -trunc: - return 1; } static int @@ -665,16 +640,12 @@ print_sflow_ethernet_frame(netdissect_options *ndo, return 1; sflow_ethernet_frame = (const struct sflow_ethernet_frame_t *)pointer; - ND_TCHECK_SIZE(sflow_ethernet_frame); ND_PRINT("\n\t frame len %u, type %u", - EXTRACT_BE_U_4(sflow_ethernet_frame->length), - EXTRACT_BE_U_4(sflow_ethernet_frame->type)); + GET_BE_U_4(sflow_ethernet_frame->length), + GET_BE_U_4(sflow_ethernet_frame->type)); return 0; - -trunc: - return 1; } static int @@ -687,17 +658,13 @@ print_sflow_extended_switch_data(netdissect_options *ndo, return 1; sflow_extended_sw_data = (const struct sflow_extended_switch_data_t *)pointer; - ND_TCHECK_SIZE(sflow_extended_sw_data); ND_PRINT("\n\t src vlan %u, src pri %u, dst vlan %u, dst pri %u", - EXTRACT_BE_U_4(sflow_extended_sw_data->src_vlan), - EXTRACT_BE_U_4(sflow_extended_sw_data->src_pri), - EXTRACT_BE_U_4(sflow_extended_sw_data->dst_vlan), - EXTRACT_BE_U_4(sflow_extended_sw_data->dst_pri)); + GET_BE_U_4(sflow_extended_sw_data->src_vlan), + GET_BE_U_4(sflow_extended_sw_data->src_pri), + GET_BE_U_4(sflow_extended_sw_data->dst_vlan), + GET_BE_U_4(sflow_extended_sw_data->dst_pri)); return 0; - -trunc: - return 1; } static int @@ -722,15 +689,14 @@ sflow_print_flow_records(netdissect_options *ndo, return 1; sflow_flow_record = (const struct sflow_flow_record_t *)tptr; - ND_TCHECK_SIZE(sflow_flow_record); /* so, the funky encoding means we cannot blythly mask-off bits, we must also check the enterprise. */ - enterprise = EXTRACT_BE_U_4(sflow_flow_record->format); + enterprise = GET_BE_U_4(sflow_flow_record->format); flow_type = enterprise & 0x0FFF; enterprise = enterprise >> 12; - flow_len = EXTRACT_BE_U_4(sflow_flow_record->length); + flow_len = GET_BE_U_4(sflow_flow_record->length); ND_PRINT("\n\t enterprise %u %s (%u) length %u", enterprise, (enterprise == 0) ? tok2str(sflow_flow_type_values,"Unknown",flow_type) : "Unknown", @@ -785,9 +751,6 @@ sflow_print_flow_records(netdissect_options *ndo, } return 0; - -trunc: - return 1; } static int @@ -801,27 +764,23 @@ sflow_print_flow_sample(netdissect_options *ndo, return 1; sflow_flow_sample = (const struct sflow_flow_sample_t *)pointer; - ND_TCHECK_SIZE(sflow_flow_sample); - nrecords = EXTRACT_BE_U_4(sflow_flow_sample->records); + nrecords = GET_BE_U_4(sflow_flow_sample->records); ND_PRINT(" seqnum %u, type %u, idx %u, rate %u, pool %u, drops %u, input %u output %u records %u", - EXTRACT_BE_U_4(sflow_flow_sample->seqnum), - EXTRACT_U_1(sflow_flow_sample->type), - EXTRACT_BE_U_3(sflow_flow_sample->index), - EXTRACT_BE_U_4(sflow_flow_sample->rate), - EXTRACT_BE_U_4(sflow_flow_sample->pool), - EXTRACT_BE_U_4(sflow_flow_sample->drops), - EXTRACT_BE_U_4(sflow_flow_sample->in_interface), - EXTRACT_BE_U_4(sflow_flow_sample->out_interface), + GET_BE_U_4(sflow_flow_sample->seqnum), + GET_U_1(sflow_flow_sample->type), + GET_BE_U_3(sflow_flow_sample->index), + GET_BE_U_4(sflow_flow_sample->rate), + GET_BE_U_4(sflow_flow_sample->pool), + GET_BE_U_4(sflow_flow_sample->drops), + GET_BE_U_4(sflow_flow_sample->in_interface), + GET_BE_U_4(sflow_flow_sample->out_interface), nrecords); return sflow_print_flow_records(ndo, pointer + sizeof(struct sflow_flow_sample_t), len - sizeof(struct sflow_flow_sample_t), nrecords); - -trunc: - return 1; } static int @@ -835,25 +794,21 @@ sflow_print_expanded_flow_sample(netdissect_options *ndo, return 1; sflow_expanded_flow_sample = (const struct sflow_expanded_flow_sample_t *)pointer; - ND_TCHECK_SIZE(sflow_expanded_flow_sample); - nrecords = EXTRACT_BE_U_4(sflow_expanded_flow_sample->records); + nrecords = GET_BE_U_4(sflow_expanded_flow_sample->records); ND_PRINT(" seqnum %u, type %u, idx %u, rate %u, pool %u, drops %u, records %u", - EXTRACT_BE_U_4(sflow_expanded_flow_sample->seqnum), - EXTRACT_BE_U_4(sflow_expanded_flow_sample->type), - EXTRACT_BE_U_4(sflow_expanded_flow_sample->index), - EXTRACT_BE_U_4(sflow_expanded_flow_sample->rate), - EXTRACT_BE_U_4(sflow_expanded_flow_sample->pool), - EXTRACT_BE_U_4(sflow_expanded_flow_sample->drops), - EXTRACT_BE_U_4(sflow_expanded_flow_sample->records)); + GET_BE_U_4(sflow_expanded_flow_sample->seqnum), + GET_BE_U_4(sflow_expanded_flow_sample->type), + GET_BE_U_4(sflow_expanded_flow_sample->index), + GET_BE_U_4(sflow_expanded_flow_sample->rate), + GET_BE_U_4(sflow_expanded_flow_sample->pool), + GET_BE_U_4(sflow_expanded_flow_sample->drops), + nrecords); return sflow_print_flow_records(ndo, pointer + sizeof(struct sflow_expanded_flow_sample_t), len - sizeof(struct sflow_expanded_flow_sample_t), nrecords); - -trunc: - return 1; } void @@ -861,63 +816,92 @@ sflow_print(netdissect_options *ndo, const u_char *pptr, u_int len) { const struct sflow_datagram_t *sflow_datagram; + const struct sflow_v6_datagram_t *sflow_v6_datagram; const struct sflow_sample_header *sflow_sample; const u_char *tptr; u_int tlen; uint32_t sflow_sample_type, sflow_sample_len; uint32_t nsamples; + uint32_t ip_version; ndo->ndo_protocol = "sflow"; tptr = pptr; tlen = len; sflow_datagram = (const struct sflow_datagram_t *)pptr; + sflow_v6_datagram = (const struct sflow_v6_datagram_t *)pptr; + ip_version = GET_BE_U_4(sflow_datagram->ip_version); + + if ((len < sizeof(struct sflow_datagram_t) && (ip_version == 1)) || + (len < sizeof(struct sflow_v6_datagram_t) && (ip_version == 2))) { + ND_PRINT("sFlowv%u", GET_BE_U_4(sflow_datagram->version)); + ND_PRINT(" [length %u < %zu]", len, sizeof(struct sflow_datagram_t)); + nd_print_invalid(ndo); + return; + } ND_TCHECK_SIZE(sflow_datagram); /* * Sanity checking of the header. */ - if (EXTRACT_BE_U_4(sflow_datagram->version) != 5) { + if (GET_BE_U_4(sflow_datagram->version) != 5) { ND_PRINT("sFlow version %u packet not supported", - EXTRACT_BE_U_4(sflow_datagram->version)); + GET_BE_U_4(sflow_datagram->version)); return; } if (ndo->ndo_vflag < 1) { ND_PRINT("sFlowv%u, %s agent %s, agent-id %u, length %u", - EXTRACT_BE_U_4(sflow_datagram->version), - EXTRACT_BE_U_4(sflow_datagram->ip_version) == 1 ? "IPv4" : "IPv6", - ipaddr_string(ndo, sflow_datagram->agent), - EXTRACT_BE_U_4(sflow_datagram->agent_id), + GET_BE_U_4(sflow_datagram->version), + ip_version == 1 ? "IPv4" : "IPv6", + ip_version == 1 ? GET_IPADDR_STRING(sflow_datagram->agent) : + GET_IP6ADDR_STRING( sflow_v6_datagram->agent), + ip_version == 1 ? GET_BE_U_4(sflow_datagram->agent_id) : + GET_BE_U_4(sflow_v6_datagram->agent_id), len); return; } /* ok they seem to want to know everything - lets fully decode it */ - nsamples=EXTRACT_BE_U_4(sflow_datagram->samples); - ND_PRINT("sFlowv%u, %s agent %s, agent-id %u, seqnum %u, uptime %u, samples %u, length %u", - EXTRACT_BE_U_4(sflow_datagram->version), - EXTRACT_BE_U_4(sflow_datagram->ip_version) == 1 ? "IPv4" : "IPv6", - ipaddr_string(ndo, sflow_datagram->agent), - EXTRACT_BE_U_4(sflow_datagram->agent_id), - EXTRACT_BE_U_4(sflow_datagram->seqnum), - EXTRACT_BE_U_4(sflow_datagram->uptime), - nsamples, - len); - - /* skip Common header */ - tptr += sizeof(struct sflow_datagram_t); - tlen -= sizeof(struct sflow_datagram_t); + if (ip_version == 1) { + nsamples=GET_BE_U_4(sflow_datagram->samples); + ND_PRINT("sFlowv%u, %s agent %s, agent-id %u, seqnum %u, uptime %u, samples %u, length %u", + GET_BE_U_4(sflow_datagram->version), + "IPv4", + GET_IPADDR_STRING(sflow_datagram->agent), + GET_BE_U_4(sflow_datagram->agent_id), + GET_BE_U_4(sflow_datagram->seqnum), + GET_BE_U_4(sflow_datagram->uptime), + nsamples, + len); + /* skip Common header */ + tptr += sizeof(struct sflow_datagram_t); + tlen -= sizeof(struct sflow_datagram_t); + } else { + nsamples=GET_BE_U_4(sflow_v6_datagram->samples); + ND_PRINT("sFlowv%u, %s agent %s, agent-id %u, seqnum %u, uptime %u, samples %u, length %u", + GET_BE_U_4(sflow_v6_datagram->version), + "IPv6", + GET_IP6ADDR_STRING(sflow_v6_datagram->agent), + GET_BE_U_4(sflow_v6_datagram->agent_id), + GET_BE_U_4(sflow_v6_datagram->seqnum), + GET_BE_U_4(sflow_v6_datagram->uptime), + nsamples, + len); + + /* skip Common header */ + tptr += sizeof(struct sflow_v6_datagram_t); + tlen -= sizeof(struct sflow_v6_datagram_t); + } while (nsamples > 0 && tlen > 0) { sflow_sample = (const struct sflow_sample_header *)tptr; - ND_TCHECK_SIZE(sflow_sample); - sflow_sample_type = (EXTRACT_BE_U_4(sflow_sample->format)&0x0FFF); - sflow_sample_len = EXTRACT_BE_U_4(sflow_sample->len); + sflow_sample_type = (GET_BE_U_4(sflow_sample->format)&0x0FFF); + sflow_sample_len = GET_BE_U_4(sflow_sample->len); if (tlen < sizeof(struct sflow_sample_header)) - goto trunc; + goto invalid; tptr += sizeof(struct sflow_sample_header); tlen -= sizeof(struct sflow_sample_header); @@ -933,7 +917,7 @@ sflow_print(netdissect_options *ndo, } if (tlen < sflow_sample_len) - goto trunc; + goto invalid; /* did we capture enough for fully decoding the sample ? */ ND_TCHECK_LEN(tptr, sflow_sample_len); @@ -941,22 +925,22 @@ sflow_print(netdissect_options *ndo, switch(sflow_sample_type) { case SFLOW_FLOW_SAMPLE: if (sflow_print_flow_sample(ndo, tptr, tlen)) - goto trunc; + goto invalid; break; case SFLOW_COUNTER_SAMPLE: if (sflow_print_counter_sample(ndo, tptr,tlen)) - goto trunc; + goto invalid; break; case SFLOW_EXPANDED_FLOW_SAMPLE: if (sflow_print_expanded_flow_sample(ndo, tptr, tlen)) - goto trunc; + goto invalid; break; case SFLOW_EXPANDED_COUNTER_SAMPLE: if (sflow_print_expanded_counter_sample(ndo, tptr,tlen)) - goto trunc; + goto invalid; break; default: @@ -970,6 +954,7 @@ sflow_print(netdissect_options *ndo, } return; - trunc: - nd_print_trunc(ndo); +invalid: + nd_print_invalid(ndo); + ND_TCHECK_LEN(tptr, tlen); }