print-rsvp.c

TCPDUMP的C语言源代码,是在数据链路层的应用

        case RSVP_OBJ_FASTREROUTE:
            /* the differences between c-type 1 and 7 are minor */
            obj_ptr.rsvp_obj_frr = (const struct rsvp_obj_frr_t *)obj_tptr;
            bw.i = EXTRACT_32BITS(obj_ptr.rsvp_obj_frr->bandwidth);

            switch(rsvp_obj_ctype) {
            case RSVP_CTYPE_1: /* new style */
                if (obj_tlen < sizeof(struct rsvp_obj_frr_t))
                    return-1;
                printf("%s  Setup Priority: %u, Holding Priority: %u, Hop-limit: %u, Bandwidth: %.10g Mbps",
                       ident,
                       (int)obj_ptr.rsvp_obj_frr->setup_prio,
                       (int)obj_ptr.rsvp_obj_frr->hold_prio,
                       (int)obj_ptr.rsvp_obj_frr->hop_limit,
                        bw.f*8/1000000);              
                printf("%s  Include-any: 0x%08x, Exclude-any: 0x%08x, Include-all: 0x%08x",
                       ident,
                       EXTRACT_32BITS(obj_ptr.rsvp_obj_frr->include_any),
                       EXTRACT_32BITS(obj_ptr.rsvp_obj_frr->exclude_any),
                       EXTRACT_32BITS(obj_ptr.rsvp_obj_frr->include_all));
                obj_tlen-=sizeof(struct rsvp_obj_frr_t);
                obj_tptr+=sizeof(struct rsvp_obj_frr_t);
                break;

            case RSVP_CTYPE_TUNNEL_IPV4: /* old style */
                if (obj_tlen < 16)
                    return-1;
                printf("%s  Setup Priority: %u, Holding Priority: %u, Hop-limit: %u, Bandwidth: %.10g Mbps",
                       ident,
                       (int)obj_ptr.rsvp_obj_frr->setup_prio,
                       (int)obj_ptr.rsvp_obj_frr->hold_prio,
                       (int)obj_ptr.rsvp_obj_frr->hop_limit,
                        bw.f*8/1000000);              
                printf("%s  Include Colors: 0x%08x, Exclude Colors: 0x%08x",
                       ident,
                       EXTRACT_32BITS(obj_ptr.rsvp_obj_frr->include_any),
                       EXTRACT_32BITS(obj_ptr.rsvp_obj_frr->exclude_any));
                obj_tlen-=16;
                obj_tptr+=16;
                break;

            default:
                hexdump=TRUE;
            }
            break;

        case RSVP_OBJ_DETOUR:
            switch(rsvp_obj_ctype) {
            case RSVP_CTYPE_TUNNEL_IPV4:
                while(obj_tlen >= 8) {
                    printf("%s  PLR-ID: %s, Avoid-Node-ID: %s",
                           ident,
                           ipaddr_string(obj_tptr),
                           ipaddr_string(obj_tptr+4));              
                    obj_tlen-=8;
                    obj_tptr+=8;
                }
                break;
            default:
                hexdump=TRUE;
            }
            break;

        case RSVP_OBJ_CLASSTYPE:
        case RSVP_OBJ_CLASSTYPE_OLD: /* fall through */
            switch(rsvp_obj_ctype) {
            case RSVP_CTYPE_1:
                printf("%s  CT: %u",
                       ident,
                       EXTRACT_32BITS(obj_tptr)&0x7);              
                obj_tlen-=4;
                obj_tptr+=4;
                break;
            default:
                hexdump=TRUE;
            }
            break;

        case RSVP_OBJ_ERROR_SPEC:
            switch(rsvp_obj_ctype) {
            case RSVP_CTYPE_3: /* fall through - FIXME add TLV parser */
            case RSVP_CTYPE_IPV4:
                if (obj_tlen < 8)
                    return-1;
                error_code=*(obj_tptr+5);
                error_value=EXTRACT_16BITS(obj_tptr+6);
                printf("%s  Error Node Address: %s, Flags: [0x%02x]%s  Error Code: %s (%u)",
                       ident,
                       ipaddr_string(obj_tptr),
                       *(obj_tptr+4),
                       ident,
                       tok2str(rsvp_obj_error_code_values,"unknown",error_code),
                       error_code);
                switch (error_code) {
                case RSVP_OBJ_ERROR_SPEC_CODE_ROUTING:
                    printf(", Error Value: %s (%u)",
                           tok2str(rsvp_obj_error_code_routing_values,"unknown",error_value),
                           error_value);
                    break;
                case RSVP_OBJ_ERROR_SPEC_CODE_DIFFSERV_TE: /* fall through */
                case RSVP_OBJ_ERROR_SPEC_CODE_DIFFSERV_TE_OLD:
                    printf(", Error Value: %s (%u)",
                           tok2str(rsvp_obj_error_code_diffserv_te_values,"unknown",error_value),
                           error_value);
                    break;
                default:
                    printf(", Unknown Error Value (%u)", error_value);
                    break;
                }
                obj_tlen-=8;
                obj_tptr+=8;
                break;
#ifdef INET6
            case RSVP_CTYPE_4: /* fall through - FIXME add TLV parser */
            case RSVP_CTYPE_IPV6:
                if (obj_tlen < 20)
                    return-1;
                error_code=*(obj_tptr+17);
                error_value=EXTRACT_16BITS(obj_tptr+18);
                printf("%s  Error Node Address: %s, Flags: [0x%02x]%s  Error Code: %s (%u)",
                       ident,
                       ip6addr_string(obj_tptr),
                       *(obj_tptr+16),
                       ident,
                       tok2str(rsvp_obj_error_code_values,"unknown",error_code),
                       error_code);

                switch (error_code) {
                case RSVP_OBJ_ERROR_SPEC_CODE_ROUTING:
                    printf(", Error Value: %s (%u)",
                           tok2str(rsvp_obj_error_code_routing_values,"unknown",error_value),
			   error_value);
                    break;
                default:
                    break;
                }
                obj_tlen-=20;
                obj_tptr+=20;
                break;
#endif
            default:
                hexdump=TRUE;
            }
            break;

        case RSVP_OBJ_PROPERTIES:
            switch(rsvp_obj_ctype) {
            case RSVP_CTYPE_1:
                if (obj_tlen < 4)
                    return-1;
                padbytes = EXTRACT_16BITS(obj_tptr+2);
                printf("%s  TLV count: %u, padding bytes: %u",
                       ident,
                       EXTRACT_16BITS(obj_tptr),
                       padbytes);
                obj_tlen-=4;
                obj_tptr+=4;
                /* loop through as long there is anything longer than the TLV header (2) */
                while(obj_tlen >= 2 + padbytes) {
                    printf("%s    %s TLV (0x%02x), length: %u", /* length includes header */
                           ident,
                           tok2str(rsvp_obj_prop_tlv_values,"unknown",*obj_tptr),
                           *obj_tptr,
                           *(obj_tptr+1));
                    if (obj_tlen < *(obj_tptr+1))
                        return-1;
                    if (*(obj_tptr+1) < 2)
                        return -1;
                    print_unknown_data(obj_tptr+2,"\n\t\t",*(obj_tptr+1)-2);
                    obj_tlen-=*(obj_tptr+1);
                    obj_tptr+=*(obj_tptr+1);
                }
                break;
            default:
                hexdump=TRUE;
            }
            break;

        case RSVP_OBJ_MESSAGE_ID:     /* fall through */
        case RSVP_OBJ_MESSAGE_ID_ACK: /* fall through */
        case RSVP_OBJ_MESSAGE_ID_LIST:
            switch(rsvp_obj_ctype) {
            case RSVP_CTYPE_1:
            case RSVP_CTYPE_2:
                if (obj_tlen < 8)
                    return-1;
                printf("%s  Flags [0x%02x], epoch: %u",
                       ident,
                       *obj_tptr,
                       EXTRACT_24BITS(obj_tptr+1));
                obj_tlen-=4;
                obj_tptr+=4;
                /* loop through as long there are no messages left */
                while(obj_tlen >= 4) {
                    printf("%s    Message-ID 0x%08x (%u)",
                           ident,
                           EXTRACT_32BITS(obj_tptr),
                           EXTRACT_32BITS(obj_tptr));
                    obj_tlen-=4;
                    obj_tptr+=4;
                }
                break;
            default:
                hexdump=TRUE;
            }
            break;

        case RSVP_OBJ_INTEGRITY:
            switch(rsvp_obj_ctype) {
            case RSVP_CTYPE_1:
                if (obj_tlen < sizeof(struct rsvp_obj_integrity_t))
                    return-1;
                obj_ptr.rsvp_obj_integrity = (const struct rsvp_obj_integrity_t *)obj_tptr;
                printf("%s  Key-ID 0x%04x%08x, Sequence 0x%08x%08x, Flags [%s]",
                       ident,
                       EXTRACT_16BITS(obj_ptr.rsvp_obj_integrity->key_id),
                       EXTRACT_32BITS(obj_ptr.rsvp_obj_integrity->key_id+2),
                       EXTRACT_32BITS(obj_ptr.rsvp_obj_integrity->sequence),
                       EXTRACT_32BITS(obj_ptr.rsvp_obj_integrity->sequence+4),
                       bittok2str(rsvp_obj_integrity_flag_values,
                                  "none",
                                  obj_ptr.rsvp_obj_integrity->flags));
                printf("%s  MD5-sum 0x%08x%08x%08x%08x (unverified)",
                       ident,
                       EXTRACT_32BITS(obj_ptr.rsvp_obj_integrity->digest),
                       EXTRACT_32BITS(obj_ptr.rsvp_obj_integrity->digest+4),
                       EXTRACT_32BITS(obj_ptr.rsvp_obj_integrity->digest+8),
                       EXTRACT_32BITS(obj_ptr.rsvp_obj_integrity->digest+12));
                obj_tlen+=sizeof(struct rsvp_obj_integrity_t);
                obj_tptr+=sizeof(struct rsvp_obj_integrity_t);
                break;
            default:
                hexdump=TRUE;
            }
            break;           

        case RSVP_OBJ_ADMIN_STATUS:
            switch(rsvp_obj_ctype) {
            case RSVP_CTYPE_1: 
                if (obj_tlen < 4)
                    return-1;
                printf("%s  Flags [%s]", ident,
                       bittok2str(rsvp_obj_admin_status_flag_values, "none",
                                  EXTRACT_32BITS(obj_tptr)));
                obj_tlen-=4;
                obj_tptr+=4;
                break;
            default:
                hexdump=TRUE;
            }
            break;

        case RSVP_OBJ_LABEL_SET:
            switch(rsvp_obj_ctype) {
            case RSVP_CTYPE_1: 
                if (obj_tlen < 4)
                    return-1;
                action = (EXTRACT_16BITS(obj_tptr)>>8);

                printf("%s  Action: %s (%u), Label type: %u", ident,
                       tok2str(rsvp_obj_label_set_action_values, "Unknown", action),
                       action, ((EXTRACT_32BITS(obj_tptr) & 0x7F)));

                switch (action) {
                case LABEL_SET_INCLUSIVE_RANGE:
                case LABEL_SET_EXCLUSIVE_RANGE: /* fall through */

		    /* only a couple of subchannels are expected */
		    if (obj_tlen < 12)
			return -1;
		    printf("%s  Start range: %u, End range: %u", ident,
                           EXTRACT_32BITS(obj_tptr+4),
                           EXTRACT_32BITS(obj_tptr+8));
		    obj_tlen-=12;
		    obj_tptr+=12;
                    break;

                default:
                    obj_tlen-=4;
                    obj_tptr+=4;
                    subchannel = 1;
                    while(obj_tlen >= 4 ) {
                        printf("%s  Subchannel #%u: %u", ident, subchannel,
                               EXTRACT_32BITS(obj_tptr));
                        obj_tptr+=4;
                        obj_tlen-=4;
                        subchannel++;
                    }
                    break;
                }
                break;

            default:
                hexdump=TRUE;
            }

        /*
         *  FIXME those are the defined objects that lack a decoder
         *  you are welcome to contribute code ;-)
         */

        case RSVP_OBJ_SCOPE:
        case RSVP_OBJ_POLICY_DATA:
        case RSVP_OBJ_ACCEPT_LABEL_SET:
        case RSVP_OBJ_PROTECTION:
        default:
            if (vflag <= 1)
                print_unknown_data(obj_tptr,"\n\t    ",obj_tlen); /* FIXME indentation */
            break;
        }
        /* do we also want to see a hex dump ? */
        if (vflag > 1 || hexdump==TRUE)
            print_unknown_data(tptr+sizeof(sizeof(struct rsvp_object_header)),"\n\t    ", /* FIXME indentation */
                               rsvp_obj_len-sizeof(struct rsvp_object_header));

        tptr+=rsvp_obj_len;
        tlen-=rsvp_obj_len;
    }
    return 0;
trunc:
    printf("\n\t\t packet exceeded snapshot");
    return -1;
}


void
rsvp_prin