print-sflow.c

来自「TCPDUMP的C语言源代码,是在数据链路层的应用」· C语言 代码 · 共 578 行 · 第 1/2 页

        return;
    }

    if (vflag < 1) {
        printf("sFlowv%u, %s agent %s, agent-id %u, length %u",
               EXTRACT_32BITS(sflow_datagram->version),
               EXTRACT_32BITS(sflow_datagram->ip_version) == 1 ? "IPv4" : "IPv6",
	       ipaddr_string(sflow_datagram->agent),
               EXTRACT_32BITS(sflow_datagram->samples),
               len);
        return;
    }

    /* ok they seem to want to know everything - lets fully decode it */
    nsamples=EXTRACT_32BITS(sflow_datagram->samples);
    printf("sFlowv%u, %s agent %s, agent-id %u, seqnum %u, uptime %u, samples %u, length %u",
           EXTRACT_32BITS(sflow_datagram->version),
           EXTRACT_32BITS(sflow_datagram->ip_version) == 1 ? "IPv4" : "IPv6",
           ipaddr_string(sflow_datagram->agent),
           EXTRACT_32BITS(sflow_datagram->agent_id),
           EXTRACT_32BITS(sflow_datagram->seqnum),
           EXTRACT_32BITS(sflow_datagram->uptime),
           nsamples,
           len);

    /* skip Common header */
    tptr+=sizeof(const struct sflow_datagram_t);
    tlen-=sizeof(const struct sflow_datagram_t);

    while (nsamples > 0 && tlen > 0) {
        sflow_sample = (const struct sflow_sample_header *)tptr;
        sflow_sample_type = (EXTRACT_32BITS(sflow_sample->format)&0x0FFF);
        sflow_sample_len = EXTRACT_32BITS(sflow_sample->len);

        tptr+=sizeof(struct sflow_sample_header);
        tlen-=sizeof(struct sflow_sample_header);
  
        printf("\n\t%s (%u), length %u,",
               tok2str(sflow_format_values, "Unknown", sflow_sample_type),
               sflow_sample_type,
               sflow_sample_len);

        /* basic sanity check */
        if (sflow_sample_type == 0 || sflow_sample_len ==0) {
            return;
        }

        /* did we capture enough for fully decoding the sample ? */
        if (!TTEST2(*tptr, sflow_sample_len)) 
            goto trunc;

	switch(sflow_sample_type) {
        case SFLOW_FLOW_SAMPLE:				/* XXX */
            break;

        case SFLOW_COUNTER_SAMPLE:			/* XXX */
            break;

        case SFLOW_EXPANDED_FLOW_SAMPLE:
            sflow_expanded_flow_sample = (const struct sflow_expanded_flow_sample_t *)tptr;
            nrecords = EXTRACT_32BITS(sflow_expanded_flow_sample->records);

            printf(" seqnum %u, type %u, idx %u, rate %u, pool %u, drops %u, records %u",
                   EXTRACT_32BITS(sflow_expanded_flow_sample->seqnum),
                   EXTRACT_32BITS(sflow_expanded_flow_sample->type),
                   EXTRACT_32BITS(sflow_expanded_flow_sample->index),
                   EXTRACT_32BITS(sflow_expanded_flow_sample->rate),
                   EXTRACT_32BITS(sflow_expanded_flow_sample->pool),
                   EXTRACT_32BITS(sflow_expanded_flow_sample->drops),
                   EXTRACT_32BITS(sflow_expanded_flow_sample->records));

            tptr+= sizeof(struct sflow_expanded_flow_sample_t);
            tlen-= sizeof(struct sflow_expanded_flow_sample_t);
	
            while ( nrecords > 0 && tlen > 0) {
				
                /* decode Flow record - 2 bytes */
                flow_type = EXTRACT_32BITS(tptr)&0x0FFF;
                flow_len = EXTRACT_32BITS(tptr+4);
                printf("\n\t  %s (%u) length %u",
                       tok2str(sflow_flow_type_values,"Unknown",flow_type),
                       flow_type,
                       flow_len);

                tptr += 8;
                tlen -= 8;

                /* did we capture enough for fully decoding the flow ? */
                if (!TTEST2(*tptr, flow_len))
                    goto trunc;

                switch(flow_type) {
                case SFLOW_FLOW_RAW_PACKET:
                    sflow_flow_raw = (const struct sflow_expanded_flow_raw_t *)tptr;
                    printf("\n\t    protocol %s (%u), length %u, stripped bytes %u, header_size %u",
                           tok2str(sflow_flow_raw_protocol_values,"Unknown",EXTRACT_32BITS(sflow_flow_raw->protocol)),
                           EXTRACT_32BITS(sflow_flow_raw->protocol),
                           EXTRACT_32BITS(sflow_flow_raw->length),
                           EXTRACT_32BITS(sflow_flow_raw->stripped_bytes),
                           EXTRACT_32BITS(sflow_flow_raw->header_size));
                    break;

                    /*
                     * FIXME those are the defined flow types that lack a decoder
                     */
                case SFLOW_FLOW_ETHERNET_FRAME:
                case SFLOW_FLOW_IPV4_DATA:
                case SFLOW_FLOW_IPV6_DATA:
                case SFLOW_FLOW_EXTENDED_SWITCH_DATA:
                case SFLOW_FLOW_EXTENDED_ROUTER_DATA:
                case SFLOW_FLOW_EXTENDED_GATEWAY_DATA:
                case SFLOW_FLOW_EXTENDED_USER_DATA:
                case SFLOW_FLOW_EXTENDED_URL_DATA:
                case SFLOW_FLOW_EXTENDED_MPLS_DATA:
                case SFLOW_FLOW_EXTENDED_NAT_DATA:
                case SFLOW_FLOW_EXTENDED_MPLS_TUNNEL:
                case SFLOW_FLOW_EXTENDED_MPLS_VC:
                case SFLOW_FLOW_EXTENDED_MPLS_FEC:
                case SFLOW_FLOW_EXTENDED_MPLS_LVP_FEC:
                case SFLOW_FLOW_EXTENDED_VLAN_TUNNEL:
                    break;
                default:
                    if (vflag <= 1)
                        print_unknown_data(tptr, "\n\t      ", flow_len);
                    break;

                }
                tptr += flow_len;
                tlen -= flow_len;
                nrecords--;
            }
            break;

        case SFLOW_EXPANDED_COUNTER_SAMPLE:
            sflow_expanded_counter_sample = (const struct sflow_expanded_counter_sample_t *)tptr;
            nrecords = EXTRACT_32BITS(sflow_expanded_counter_sample->records);

            printf(" seqnum %u, type %u, idx %u, records %u",
                   EXTRACT_32BITS(sflow_expanded_counter_sample->seqnum),
                   EXTRACT_32BITS(sflow_expanded_counter_sample->type),
                   EXTRACT_32BITS(sflow_expanded_counter_sample->index),
                   nrecords);

            tptr+= sizeof(struct sflow_expanded_counter_sample_t);
            tlen-= sizeof(struct sflow_expanded_counter_sample_t);

            while ( nrecords > 0 && tlen > 0) {

                /* decode counter record - 2 bytes */
                counter_type = EXTRACT_32BITS(tptr)&0x0FFF;			
                counter_len = EXTRACT_32BITS(tptr+4);
                printf("\n\t    %s (%u) length %u",
                       tok2str(sflow_counter_type_values,"Unknown",counter_type),
                       counter_type,
                       counter_len);

                tptr += 8;
                tlen -= 8;

                /* did we capture enough for fully decoding the counter ? */
                if (!TTEST2(*tptr, counter_len))
                    goto trunc;

                switch(counter_type) {
                case SFLOW_COUNTER_GENERIC:			
                    sflow_gen_counter = (const struct sflow_generic_counter_t *)tptr;
                    printf("\n\t      ifindex %u, iftype %u, ifspeed %u, ifdirection %u (%s)",
                           EXTRACT_32BITS(sflow_gen_counter->ifindex),
                           EXTRACT_32BITS(sflow_gen_counter->iftype),
                           EXTRACT_32BITS(sflow_gen_counter->ifspeed),
                           EXTRACT_32BITS(sflow_gen_counter->ifdirection),
                           tok2str(sflow_iface_direction_values, "Unknown",
                                   EXTRACT_32BITS(sflow_gen_counter->ifdirection)));
                    printf("\n\t      ifstatus %u, adminstatus: %s, operstatus: %s",
                           EXTRACT_32BITS(sflow_gen_counter->ifstatus),
                           EXTRACT_32BITS(sflow_gen_counter->ifstatus)&1 ? "up" : "down",
                           (EXTRACT_32BITS(sflow_gen_counter->ifstatus)>>1)&1 ? "up" : "down");
                    printf("\n\t      In octets %" PRIu64
                           ", unicast pkts %u, multicast pkts %u, broadcast pkts %u, discards %u",
                           EXTRACT_64BITS(sflow_gen_counter->ifinoctets),
                           EXTRACT_32BITS(sflow_gen_counter->ifinunicastpkts),
                           EXTRACT_32BITS(sflow_gen_counter->ifinmulticastpkts),
                           EXTRACT_32BITS(sflow_gen_counter->ifinbroadcastpkts),
                           EXTRACT_32BITS(sflow_gen_counter->ifindiscards));
                    printf("\n\t      In errors %u, unknown protos %u",
                           EXTRACT_32BITS(sflow_gen_counter->ifinerrors),
                           EXTRACT_32BITS(sflow_gen_counter->ifinunkownprotos));
                    printf("\n\t      Out octets %" PRIu64
                           ", unicast pkts %u, multicast pkts %u, broadcast pkts %u, discards %u",
                           EXTRACT_64BITS(sflow_gen_counter->ifoutoctets),
                           EXTRACT_32BITS(sflow_gen_counter->ifoutunicastpkts),
                           EXTRACT_32BITS(sflow_gen_counter->ifoutmulticastpkts),
                           EXTRACT_32BITS(sflow_gen_counter->ifoutbroadcastpkts),
                           EXTRACT_32BITS(sflow_gen_counter->ifoutdiscards));
                    printf("\n\t      Out errors %u, promisc mode %u", 
                           EXTRACT_32BITS(sflow_gen_counter->ifouterrors),
                           EXTRACT_32BITS(sflow_gen_counter->ifpromiscmode));
                    break;
                case SFLOW_COUNTER_ETHERNET:
                    sflow_eth_counter = (const struct sflow_ethernet_counter_t *)tptr;
                    printf("\n\t      align errors %u, fcs errors %u, single collision %u, multiple collision %u, test error %u",
                           EXTRACT_32BITS(sflow_eth_counter->alignerrors),
                           EXTRACT_32BITS(sflow_eth_counter->fcserrors),
                           EXTRACT_32BITS(sflow_eth_counter->single_collision_frames),
                           EXTRACT_32BITS(sflow_eth_counter->multiple_collision_frames),
                           EXTRACT_32BITS(sflow_eth_counter->test_errors));
                    printf("\n\t      deferred %u, late collision %u, excessive collision %u, mac trans error %u", 
                           EXTRACT_32BITS(sflow_eth_counter->deferred_transmissions),
                           EXTRACT_32BITS(sflow_eth_counter->late_collisions),
                           EXTRACT_32BITS(sflow_eth_counter->excessive_collisions),
                           EXTRACT_32BITS(sflow_eth_counter->mac_transmit_errors));
                    printf("\n\t      carrier error %u, frames too long %u, mac receive errors %u, symbol errors %u",	
                           EXTRACT_32BITS(sflow_eth_counter->carrier_sense_errors),
                           EXTRACT_32BITS(sflow_eth_counter->frame_too_longs),
                           EXTRACT_32BITS(sflow_eth_counter->mac_receive_errors),
                           EXTRACT_32BITS(sflow_eth_counter->symbol_errors));
                    break;
                case SFLOW_COUNTER_TOKEN_RING:			/* XXX */
                    break;
                case SFLOW_COUNTER_BASEVG:
                    sflow_100basevg_counter = (const struct sflow_100basevg_counter_t *)tptr;
                    printf("\n\t      in high prio frames %u, in high prio octets %" PRIu64,
                           EXTRACT_32BITS(sflow_100basevg_counter->in_highpriority_frames),
                           EXTRACT_64BITS(sflow_100basevg_counter->in_highpriority_octets));
                    printf("\n\t      in norm prio frames %u, in norm prio octets %" PRIu64,
                           EXTRACT_32BITS(sflow_100basevg_counter->in_normpriority_frames),
                           EXTRACT_64BITS(sflow_100basevg_counter->in_normpriority_octets));
                    printf("\n\t      in ipm errors %u, oversized %u, in data errors %u, null addressed frames %u",
                           EXTRACT_32BITS(sflow_100basevg_counter->in_ipmerrors),
                           EXTRACT_32BITS(sflow_100basevg_counter->in_oversized),
                           EXTRACT_32BITS(sflow_100basevg_counter->in_data_errors),
                           EXTRACT_32BITS(sflow_100basevg_counter->in_null_addressed_frames));
                    printf("\n\t      out high prio frames %u, out high prio octets %" PRIu64
                           ", trans into frames %u",
                           EXTRACT_32BITS(sflow_100basevg_counter->out_highpriority_frames),
                           EXTRACT_64BITS(sflow_100basevg_counter->out_highpriority_octets),
                           EXTRACT_32BITS(sflow_100basevg_counter->transitioninto_frames));
                    printf("\n\t      in hc high prio octets %" PRIu64
                           ", in hc norm prio octets %" PRIu64
                           ", out hc high prio octets %" PRIu64,
                           EXTRACT_64BITS(sflow_100basevg_counter->hc_in_highpriority_octets),
                           EXTRACT_64BITS(sflow_100basevg_counter->hc_in_normpriority_octets),
                           EXTRACT_64BITS(sflow_100basevg_counter->hc_out_highpriority_octets));
                    break;
                case SFLOW_COUNTER_VLAN:
                    sflow_vlan_counter = (const struct sflow_vlan_counter_t *)tptr;
                    printf("\n\t      vlan_id %u, octets %" PRIu64
                           ", unicast_pkt %u, multicast_pkt %u, broadcast_pkt %u, discards %u",
                           EXTRACT_32BITS(sflow_vlan_counter->vlan_id),
                           EXTRACT_64BITS(sflow_vlan_counter->octets),
                           EXTRACT_32BITS(sflow_vlan_counter->unicast_pkt),
                           EXTRACT_32BITS(sflow_vlan_counter->multicast_pkt),
                           EXTRACT_32BITS(sflow_vlan_counter->broadcast_pkt),
                           EXTRACT_32BITS(sflow_vlan_counter->discards));
                    break;
                case SFLOW_COUNTER_PROCESSOR:			/* XXX */
                    break;
                default:
                    if (vflag <= 1)
                        print_unknown_data(tptr, "\n\t\t", counter_len);
                    break;
                }
                tptr += counter_len;
                tlen -= counter_len;
                nrecords--;
            }
            break;
        default:
            if (vflag <= 1)
                print_unknown_data(tptr, "\n\t    ", sflow_sample_len);
            break;
        }
        tptr += sflow_sample_len;
        tlen -= sflow_sample_len;
        nsamples--;
    }
    return;

 trunc:
    printf("[|SFLOW]");
}

/*
 * Local Variables:
 * c-style: whitesmith
 * c-basic-offset: 4
 * End:
 */