print-rsvp.c

TCPDUMP的C语言源代码,是在数据链路层的应用

                    case RSVP_OBJ_XRO_IPV4:
                        printf(", %s, %s/%u, Flags: [%s]",
                               RSVP_OBJ_XRO_MASK_LOOSE(*obj_tptr) ? "Loose" : "Strict",
                               ipaddr_string(obj_tptr+2),
                               *(obj_tptr+6),
                               bittok2str(rsvp_obj_rro_flag_values,
                                   "none",
                                   *(obj_tptr+7))); /* rfc3209 says that this field is rsvd. */
                    }
                    obj_tlen-=*(obj_tptr+1);
                    obj_tptr+=*(obj_tptr+1);
                }
                break;
            default:
                hexdump=TRUE;
            }
            break;

        case RSVP_OBJ_HELLO:
            switch(rsvp_obj_ctype) {
            case RSVP_CTYPE_1:
            case RSVP_CTYPE_2:
                if (obj_tlen < 8)
                    return-1;
                printf("%s  Source Instance: 0x%08x, Destination Instance: 0x%08x",
                       ident,
                       EXTRACT_32BITS(obj_tptr),
                       EXTRACT_32BITS(obj_tptr+4));
                obj_tlen-=8;
                obj_tptr+=8;
                break;
            default:
                hexdump=TRUE;
            }
            break;

        case RSVP_OBJ_RESTART_CAPABILITY:
            switch(rsvp_obj_ctype) {
            case RSVP_CTYPE_1:
                if (obj_tlen < 8)
                    return-1;
                printf("%s  Restart  Time: %ums, Recovery Time: %ums",
                       ident,
                       EXTRACT_32BITS(obj_tptr),
                       EXTRACT_32BITS(obj_tptr+4));
                obj_tlen-=8;
                obj_tptr+=8;
                break;
            default:
                hexdump=TRUE;
            }
            break;

        case RSVP_OBJ_SESSION_ATTRIBUTE:
            switch(rsvp_obj_ctype) {
            case RSVP_CTYPE_TUNNEL_IPV4:
                if (obj_tlen < 4)
                    return-1;
                namelen = *(obj_tptr+3);
                if (obj_tlen < 4+namelen)
                    return-1;
                printf("%s  Session Name: ", ident);
                for (i = 0; i < namelen; i++)
                    safeputchar(*(obj_tptr+4+i));
                printf("%s  Setup Priority: %u, Holding Priority: %u, Flags: [%s]",
                       ident,
                       (int)*obj_tptr,
                       (int)*(obj_tptr+1),
                       tok2str(rsvp_session_attribute_flag_values,
                                  "none",
                                  *(obj_tptr+2)));

                obj_tlen-=4+*(obj_tptr+3);
                obj_tptr+=4+*(obj_tptr+3);
                break;
            default:
                hexdump=TRUE;
            }
            break;

	case RSVP_OBJ_GENERALIZED_UNI:
            switch(rsvp_obj_ctype) {
		int subobj_type,af,subobj_len,total_subobj_len;

            case RSVP_CTYPE_1: 

                if (obj_tlen < 4)
                    return-1;

		/* read variable length subobjects */
		total_subobj_len = obj_tlen;
                while(total_subobj_len > 0) {
                    subobj_len  = EXTRACT_16BITS(obj_tptr);
                    subobj_type = (EXTRACT_16BITS(obj_tptr+2))>>8;
                    af = (EXTRACT_16BITS(obj_tptr+2))&0x00FF;

                    printf("%s  Subobject Type: %s (%u), AF: %s (%u), length: %u",
                           ident,
                           tok2str(rsvp_obj_generalized_uni_values, "Unknown", subobj_type),
                           subobj_type,
                           tok2str(af_values, "Unknown", af), af,
                           subobj_len);

                    switch(subobj_type) {
                    case RSVP_GEN_UNI_SUBOBJ_SOURCE_TNA_ADDRESS:
                    case RSVP_GEN_UNI_SUBOBJ_DESTINATION_TNA_ADDRESS:

                        switch(af) {
                        case AFNUM_INET:
                            if (subobj_len < 8)
                                return -1;
                            printf("%s    UNI IPv4 TNA address: %s",
                                   ident, ipaddr_string(obj_tptr+4));
                            break;
#ifdef INET6
                        case AFNUM_INET6:
                            if (subobj_len < 20)
                                return -1;
                            printf("%s    UNI IPv6 TNA address: %s",
                                   ident, ip6addr_string(obj_tptr+4));
                            break;
#endif
                        case AFNUM_NSAP:
                            if (subobj_len) {
                                /* unless we have a TLV parser lets just hexdump */
                                hexdump=TRUE;
                            }
                            break;
                        }
                        break;

                    case RSVP_GEN_UNI_SUBOBJ_DIVERSITY:
                        if (subobj_len) {
                            /* unless we have a TLV parser lets just hexdump */
                            hexdump=TRUE;
                        }
                        break;

                    case RSVP_GEN_UNI_SUBOBJ_EGRESS_LABEL:
                        if (subobj_len < 16) {
                            return -1;
                        }

                        printf("%s    U-bit: %x, Label type: %u, Logical port id: %u, Label: %u",
                               ident,
                               ((EXTRACT_32BITS(obj_tptr+4))>>31),
                               ((EXTRACT_32BITS(obj_tptr+4))&0xFF),
                               EXTRACT_32BITS(obj_tptr+8),
                               EXTRACT_32BITS(obj_tptr+12));
                        break;

                    case RSVP_GEN_UNI_SUBOBJ_SERVICE_LEVEL:
                        if (subobj_len < 8) {
                            return -1;
                        }

                        printf("%s    Service level: %u",
                               ident, (EXTRACT_32BITS(obj_tptr+4))>>24);
                        break;

                    default:
                        hexdump=TRUE;
                        break;
                    }
                    total_subobj_len-=subobj_len;
                    obj_tptr+=subobj_len;
                    obj_tlen+=subobj_len;
		}

                if (total_subobj_len) {
                    /* unless we have a TLV parser lets just hexdump */
                    hexdump=TRUE;
                }
                break;

            default:
                hexdump=TRUE;
            }
            break;

        case RSVP_OBJ_RSVP_HOP:
            switch(rsvp_obj_ctype) {
            case RSVP_CTYPE_3: /* fall through - FIXME add TLV parser */
            case RSVP_CTYPE_IPV4:
                if (obj_tlen < 8)
                    return-1;
                printf("%s  Previous/Next Interface: %s, Logical Interface Handle: 0x%08x",
                       ident,
                       ipaddr_string(obj_tptr),
                       EXTRACT_32BITS(obj_tptr+4));
                obj_tlen-=8;
                obj_tptr+=8;
                if (obj_tlen)
                    hexdump=TRUE; /* unless we have a TLV parser lets just hexdump */
                break;
#ifdef INET6
            case RSVP_CTYPE_4: /* fall through - FIXME add TLV parser */
            case RSVP_CTYPE_IPV6:
                if (obj_tlen < 20)
                    return-1;
                printf("%s  Previous/Next Interface: %s, Logical Interface Handle: 0x%08x",
                       ident,
                       ip6addr_string(obj_tptr),
                       EXTRACT_32BITS(obj_tptr+16));
                obj_tlen-=20;
                obj_tptr+=20;
                hexdump=TRUE; /* unless we have a TLV parser lets just hexdump */
                break;
#endif
            default:
                hexdump=TRUE;
            }
            break;

        case RSVP_OBJ_TIME_VALUES:
            switch(rsvp_obj_ctype) {
            case RSVP_CTYPE_1:
                if (obj_tlen < 4)
                    return-1;
                printf("%s  Refresh Period: %ums",
                       ident,
                       EXTRACT_32BITS(obj_tptr));
                obj_tlen-=4;
                obj_tptr+=4;
                break;
            default:
                hexdump=TRUE;
            }
            break;

        /* those three objects do share the same semantics */
        case RSVP_OBJ_SENDER_TSPEC:
        case RSVP_OBJ_ADSPEC:
        case RSVP_OBJ_FLOWSPEC:
            switch(rsvp_obj_ctype) {
            case RSVP_CTYPE_2:
                if (obj_tlen < 4)
                    return-1;
                printf("%s  Msg-Version: %u, length: %u",
                       ident,
                       (*obj_tptr & 0xf0) >> 4,
                       EXTRACT_16BITS(obj_tptr+2)<<2);
                obj_tptr+=4; /* get to the start of the service header */
                obj_tlen-=4;

                while (obj_tlen >= 4) {
                    intserv_serv_tlen=EXTRACT_16BITS(obj_tptr+2)<<2;
                    printf("%s  Service Type: %s (%u), break bit %s set, Service length: %u",
                           ident,
                           tok2str(rsvp_intserv_service_type_values,"unknown",*(obj_tptr)),
                           *(obj_tptr),
                           (*(obj_tptr+1)&0x80) ? "" : "not",
                           intserv_serv_tlen);
                    
                    obj_tptr+=4; /* get to the start of the parameter list */
                    obj_tlen-=4;

                    while (intserv_serv_tlen>=4) {
                        processed = rsvp_intserv_print(obj_tptr, obj_tlen);
                        if (processed == 0)
                            break;
                        obj_tlen-=processed;
                        intserv_serv_tlen-=processed;
                        obj_tptr+=processed;
                    }
                }
                break;
            default:
                hexdump=TRUE;
            }
            break;

        case RSVP_OBJ_FILTERSPEC:
            switch(rsvp_obj_ctype) {
            case RSVP_CTYPE_IPV4:
                if (obj_tlen < 8)
                    return-1;
                printf("%s  Source Address: %s, Source Port: %u",
                       ident,
                       ipaddr_string(obj_tptr),
                       EXTRACT_16BITS(obj_tptr+6));
                obj_tlen-=8;
                obj_tptr+=8;
                break;
#ifdef INET6
            case RSVP_CTYPE_IPV6:
                if (obj_tlen < 20)
                    return-1;
                printf("%s  Source Address: %s, Source Port: %u",
                       ident,
                       ip6addr_string(obj_tptr),
                       EXTRACT_16BITS(obj_tptr+18));
                obj_tlen-=20;
                obj_tptr+=20;
                break;
            case RSVP_CTYPE_3:
                if (obj_tlen < 20)
                    return-1;
                printf("%s  Source Address: %s, Flow Label: %u",
                       ident,
                       ip6addr_string(obj_tptr),
                       EXTRACT_24BITS(obj_tptr+17));
                obj_tlen-=20;
                obj_tptr+=20;
                break;
            case RSVP_CTYPE_TUNNEL_IPV6:
                if (obj_tlen < 20)
                    return-1;
                printf("%s  Source Address: %s, LSP-ID: 0x%04x",
                       ident,
                       ipaddr_string(obj_tptr),
                       EXTRACT_16BITS(obj_tptr+18));
                obj_tlen-=20;
                obj_tptr+=20;
                break;
#endif
            case RSVP_CTYPE_TUNNEL_IPV4:
                if (obj_tlen < 8)
                    return-1;
                printf("%s  Source Address: %s, LSP-ID: 0x%04x",
                       ident,
                       ipaddr_string(obj_tptr),
                       EXTRACT_16BITS(obj_tptr+6));
                obj_tlen-=8;
                obj_tptr+=8;
                break;
            default:
                hexdump=TRUE;
            }
            break;