1/*
2 * Copyright (C) 1999 WIDE Project.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
--- 22 unchanged lines hidden (view full) ---
31 */
32
33#ifdef HAVE_CONFIG_H
34#include "config.h"
35#endif
36
37#ifndef lint
38static const char rcsid[] _U_ =
39 "@(#) $Header: /tcpdump/master/tcpdump/print-bgp.c,v 1.91 2005/03/27 01:31:25 guy Exp $";
40#endif
41
42#include <tcpdump-stdinc.h>
43
44#include <stdio.h>
45#include <string.h>
46
47#include "interface.h"
48#include "decode_prefix.h"
49#include "addrtoname.h"
50#include "extract.h"
51#include "bgp.h"
52#include "l2vpn.h"
53
54struct bgp {
55 u_int8_t bgp_marker[16];
56 u_int16_t bgp_len;
57 u_int8_t bgp_type;
58};
59#define BGP_SIZE 19 /* unaligned */
60
--- 27 unchanged lines hidden (view full) ---
88
89struct bgp_opt {
90 u_int8_t bgpopt_type;
91 u_int8_t bgpopt_len;
92 /* variable length */
93};
94#define BGP_OPT_SIZE 2 /* some compilers may pad to 4 bytes */
95
96#define BGP_UPDATE_MINSIZE 23
97
98struct bgp_notification {
99 u_int8_t bgpn_marker[16];
100 u_int16_t bgpn_len;
101 u_int8_t bgpn_type;
102 u_int8_t bgpn_major;
103 u_int8_t bgpn_minor;
104};
105#define BGP_NOTIFICATION_SIZE 21 /* unaligned */
--- 33 unchanged lines hidden (view full) ---
139#define BGPTYPE_ORIGINATOR_ID 9 /* RFC1998 */
140#define BGPTYPE_CLUSTER_LIST 10 /* RFC1998 */
141#define BGPTYPE_DPA 11 /* draft-ietf-idr-bgp-dpa */
142#define BGPTYPE_ADVERTISERS 12 /* RFC1863 */
143#define BGPTYPE_RCID_PATH 13 /* RFC1863 */
144#define BGPTYPE_MP_REACH_NLRI 14 /* RFC2283 */
145#define BGPTYPE_MP_UNREACH_NLRI 15 /* RFC2283 */
146#define BGPTYPE_EXTD_COMMUNITIES 16 /* draft-ietf-idr-bgp-ext-communities */
147#define BGPTYPE_ATTR_SET 128 /* draft-marques-ppvpn-ibgp */
148
149#define BGP_MP_NLRI_MINSIZE 3 /* End of RIB Marker detection */
150
151static struct tok bgp_attr_values[] = {
152 { BGPTYPE_ORIGIN, "Origin"},
153 { BGPTYPE_AS_PATH, "AS Path"},
154 { BGPTYPE_NEXT_HOP, "Next Hop"},
155 { BGPTYPE_MULTI_EXIT_DISC, "Multi Exit Discriminator"},
156 { BGPTYPE_LOCAL_PREF, "Local Preference"},
157 { BGPTYPE_ATOMIC_AGGREGATE, "Atomic Aggregate"},
158 { BGPTYPE_AGGREGATOR, "Aggregator"},
159 { BGPTYPE_COMMUNITIES, "Community"},
160 { BGPTYPE_ORIGINATOR_ID, "Originator ID"},
161 { BGPTYPE_CLUSTER_LIST, "Cluster List"},
162 { BGPTYPE_DPA, "DPA"},
163 { BGPTYPE_ADVERTISERS, "Advertisers"},
164 { BGPTYPE_RCID_PATH, "RCID Path / Cluster ID"},
165 { BGPTYPE_MP_REACH_NLRI, "Multi-Protocol Reach NLRI"},
166 { BGPTYPE_MP_UNREACH_NLRI, "Multi-Protocol Unreach NLRI"},
167 { BGPTYPE_EXTD_COMMUNITIES, "Extended Community"},
168 { BGPTYPE_ATTR_SET, "Attribute Set"},
169 { 255, "Reserved for development"},
170 { 0, NULL}
171};
172
173#define BGP_AS_SET 1
174#define BGP_AS_SEQUENCE 2
175#define BGP_CONFED_AS_SEQUENCE 3 /* draft-ietf-idr-rfc3065bis-01 */
176#define BGP_CONFED_AS_SET 4 /* draft-ietf-idr-rfc3065bis-01 */
--- 21 unchanged lines hidden (view full) ---
198static struct tok bgp_opt_values[] = {
199 { BGP_OPT_AUTH, "Authentication Information"},
200 { BGP_OPT_CAP, "Capabilities Advertisement"},
201 { 0, NULL}
202};
203
204#define BGP_CAPCODE_MP 1
205#define BGP_CAPCODE_RR 2
206#define BGP_CAPCODE_ORF 3 /* XXX */
207#define BGP_CAPCODE_RESTART 64 /* draft-ietf-idr-restart-05 */
208#define BGP_CAPCODE_AS_NEW 65 /* XXX */
209#define BGP_CAPCODE_DYN_CAP 67 /* XXX */
210#define BGP_CAPCODE_RR_CISCO 128
211
212static struct tok bgp_capcode_values[] = {
213 { BGP_CAPCODE_MP, "Multiprotocol Extensions"},
214 { BGP_CAPCODE_RR, "Route Refresh"},
215 { BGP_CAPCODE_ORF, "Cooperative Route Filtering"},
216 { BGP_CAPCODE_RESTART, "Graceful Restart"},
217 { BGP_CAPCODE_AS_NEW, "32-Bit AS Number"},
218 { BGP_CAPCODE_DYN_CAP, "Dynamic Capability"},
219 { BGP_CAPCODE_RR_CISCO, "Route Refresh (Cisco)"},
220 { 0, NULL}
221};
222
223#define BGP_NOTIFY_MAJOR_MSG 1
224#define BGP_NOTIFY_MAJOR_OPEN 2
225#define BGP_NOTIFY_MAJOR_UPDATE 3
226#define BGP_NOTIFY_MAJOR_HOLDTIME 4
--- 74 unchanged lines hidden (view full) ---
301
302/* Subsequent address family identifier, RFC2283 section 7 */
303#define SAFNUM_RES 0
304#define SAFNUM_UNICAST 1
305#define SAFNUM_MULTICAST 2
306#define SAFNUM_UNIMULTICAST 3
307/* labeled BGP RFC3107 */
308#define SAFNUM_LABUNICAST 4
309#define SAFNUM_TUNNEL 64 /* XXX */
310#define SAFNUM_VPLS 65 /* XXX */
311#define SAFNUM_MDT 66 /* XXX */
312/* Section 4.3.4 of draft-rosen-rfc2547bis-03.txt */
313#define SAFNUM_VPNUNICAST 128
314#define SAFNUM_VPNMULTICAST 129
315#define SAFNUM_VPNUNIMULTICAST 130
316/* draft-marques-ppvpn-rt-constrain-01.txt */
317#define SAFNUM_RT_ROUTING_INFO 132
318
319#define BGP_VPN_RD_LEN 8
320
321static struct tok bgp_safi_values[] = {
322 { SAFNUM_RES, "Reserved"},
323 { SAFNUM_UNICAST, "Unicast"},
324 { SAFNUM_MULTICAST, "Multicast"},
325 { SAFNUM_UNIMULTICAST, "Unicast+Multicast"},
326 { SAFNUM_LABUNICAST, "labeled Unicast"},
327 { SAFNUM_TUNNEL, "Tunnel"},
328 { SAFNUM_VPLS, "VPLS"},
329 { SAFNUM_MDT, "MDT"},
330 { SAFNUM_VPNUNICAST, "labeled VPN Unicast"},
331 { SAFNUM_VPNMULTICAST, "labeled VPN Multicast"},
332 { SAFNUM_VPNUNIMULTICAST, "labeled VPN Unicast+Multicast"},
333 { SAFNUM_RT_ROUTING_INFO, "Route Target Routing Information"}, /* draft-marques-ppvpn-rt-constrain-01.txt */
334 { 0, NULL }
335};
336
337/* well-known community */
338#define BGP_COMMUNITY_NO_EXPORT 0xffffff01
339#define BGP_COMMUNITY_NO_ADVERT 0xffffff02
340#define BGP_COMMUNITY_NO_EXPORT_SUBCONFED 0xffffff03
341
--- 41 unchanged lines hidden (view full) ---
383#define BGP_EXT_COM_RT_0 0x0002 /* Route Target,Format AS(2bytes):AN(4bytes) */
384#define BGP_EXT_COM_RT_1 0x0102 /* Route Target,Format IP address:AN(2bytes) */
385#define BGP_EXT_COM_RT_2 0x0202 /* Route Target,Format AN(4bytes):local(2bytes) */
386#define BGP_EXT_COM_RO_0 0x0003 /* Route Origin,Format AS(2bytes):AN(4bytes) */
387#define BGP_EXT_COM_RO_1 0x0103 /* Route Origin,Format IP address:AN(2bytes) */
388#define BGP_EXT_COM_RO_2 0x0203 /* Route Origin,Format AN(4bytes):local(2bytes) */
389#define BGP_EXT_COM_LINKBAND 0x4004 /* Link Bandwidth,Format AS(2B):Bandwidth(4B) */
390 /* rfc2547 bgp-mpls-vpns */
391#define BGP_EXT_COM_CISCO_MCAST 0x0009 /* cisco proprietary */
392
393#define BGP_EXT_COM_VPN_ORIGIN 0x0005 /* OSPF Domain ID / VPN of Origin - draft-rosen-vpns-ospf-bgp-mpls */
394#define BGP_EXT_COM_VPN_ORIGIN2 0x0105 /* duplicate - keep for backwards compatability */
395#define BGP_EXT_COM_VPN_ORIGIN3 0x0205 /* duplicate - keep for backwards compatability */
396#define BGP_EXT_COM_VPN_ORIGIN4 0x8005 /* duplicate - keep for backwards compatability */
397
398#define BGP_EXT_COM_OSPF_RTYPE 0x0306 /* OSPF Route Type,Format Area(4B):RouteType(1B):Options(1B) */
399#define BGP_EXT_COM_OSPF_RTYPE2 0x8000 /* duplicate - keep for backwards compatability */
--- 12 unchanged lines hidden (view full) ---
412static struct tok bgp_extd_comm_subtype_values[] = {
413 { BGP_EXT_COM_RT_0, "target"},
414 { BGP_EXT_COM_RT_1, "target"},
415 { BGP_EXT_COM_RT_2, "target"},
416 { BGP_EXT_COM_RO_0, "origin"},
417 { BGP_EXT_COM_RO_1, "origin"},
418 { BGP_EXT_COM_RO_2, "origin"},
419 { BGP_EXT_COM_LINKBAND, "link-BW"},
420 { BGP_EXT_COM_CISCO_MCAST, "mdt-group"},
421 { BGP_EXT_COM_VPN_ORIGIN, "ospf-domain"},
422 { BGP_EXT_COM_VPN_ORIGIN2, "ospf-domain"},
423 { BGP_EXT_COM_VPN_ORIGIN3, "ospf-domain"},
424 { BGP_EXT_COM_VPN_ORIGIN4, "ospf-domain"},
425 { BGP_EXT_COM_OSPF_RTYPE, "ospf-route-type"},
426 { BGP_EXT_COM_OSPF_RTYPE2, "ospf-route-type"},
427 { BGP_EXT_COM_OSPF_RID, "ospf-router-id"},
428 { BGP_EXT_COM_OSPF_RID2, "ospf-router-id"},
--- 15 unchanged lines hidden (view full) ---
444 { BGP_OSPF_RTYPE_NET, "Network" },
445 { BGP_OSPF_RTYPE_SUM, "Summary" },
446 { BGP_OSPF_RTYPE_EXT, "External" },
447 { BGP_OSPF_RTYPE_NSSA,"NSSA External" },
448 { BGP_OSPF_RTYPE_SHAM,"MPLS-VPN Sham" },
449 { 0, NULL },
450};
451
452int
453decode_prefix4(const u_char *pptr, char *buf, u_int buflen)
454{
455 struct in_addr addr;
456 u_int plen;
457
458 TCHECK(pptr[0]);
459 plen = pptr[0];
460 if (32 < plen)
--- 53 unchanged lines hidden (view full) ---
514
515trunc:
516 return -2;
517}
518
519/* RDs and RTs share the same semantics
520 * we use bgp_vpn_rd_print for
521 * printing route targets inside a NLRI */
522char *
523bgp_vpn_rd_print (const u_char *pptr) {
524
525 /* allocate space for the largest possible string */
526 static char rd[sizeof("xxxxxxxxxx:xxxxx (xxx.xxx.xxx.xxx:xxxxx)")];
527 char *pos = rd;
528
529 /* ok lets load the RD format */
530 switch (EXTRACT_16BITS(pptr)) {
531
532 /* AS:IP-address fmt*/
533 case 0:
534 snprintf(pos, sizeof(rd) - (pos - rd), "%u:%u.%u.%u.%u",
535 EXTRACT_16BITS(pptr+2), *(pptr+4), *(pptr+5), *(pptr+6), *(pptr+7));
536 break;
537 /* IP-address:AS fmt*/
538
539 case 1:
540 snprintf(pos, sizeof(rd) - (pos - rd), "%u.%u.%u.%u:%u",
541 *(pptr+2), *(pptr+3), *(pptr+4), *(pptr+5), EXTRACT_16BITS(pptr+6));
542 break;
543
544 /* 4-byte-AS:number fmt*/
545 case 2:
546 snprintf(pos, sizeof(rd) - (pos - rd), "%u:%u (%u.%u.%u.%u:%u)",
547 EXTRACT_32BITS(pptr+2), EXTRACT_16BITS(pptr+6),
548 *(pptr+2), *(pptr+3), *(pptr+4), *(pptr+5), EXTRACT_16BITS(pptr+6));
549 break;
550 default:
551 snprintf(pos, sizeof(rd) - (pos - rd), "unknown RD format");
552 break;
553 }
554 pos += strlen(pos);
555 *(pos) = '\0';
556 return (rd);
--- 115 unchanged lines hidden (view full) ---
672 }
673 return plen+2;
674
675trunc:
676 return -2;
677}
678
679#ifdef INET6
680int
681decode_prefix6(const u_char *pd, char *buf, u_int buflen)
682{
683 struct in6_addr addr;
684 u_int plen;
685
686 TCHECK(pd[0]);
687 plen = pd[0];
688 if (128 < plen)
--- 78 unchanged lines hidden (view full) ---
767 return 12 + (plen + 7) / 8;
768
769trunc:
770 return -2;
771}
772#endif
773
774static int
775decode_labeled_clnp_prefix(const u_char *pptr, char *buf, u_int buflen)
776{
777 u_int8_t addr[19];
778 u_int plen;
779
780 TCHECK(pptr[0]);
781 plen = pptr[0]; /* get prefix length */
782 plen-=24; /* adjust prefixlen - labellength */
783
784 if (152 < plen)
785 return -1;
786
787 memset(&addr, 0, sizeof(addr));
788 TCHECK2(pptr[4], (plen + 7) / 8);
789 memcpy(&addr, &pptr[4], (plen + 7) / 8);
790 if (plen % 8) {
791 addr[(plen + 7) / 8 - 1] &=
792 ((0xff00 >> (plen % 8)) & 0xff);
793 }
794 /* the label may get offsetted by 4 bits so lets shift it right */
795 snprintf(buf, buflen, "%s/%d, label:%u %s",
796 isonsap_string(addr,(plen + 7) / 8 - 1),
797 plen,
798 EXTRACT_24BITS(pptr+1)>>4,
799 ((pptr[3]&1)==0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
800
801 return 4 + (plen + 7) / 8;
802
803trunc:
804 return -2;
805}
806
807static int
808decode_labeled_vpn_clnp_prefix(const u_char *pptr, char *buf, u_int buflen)
809{
810 u_int8_t addr[19];
811 u_int plen;
812
813 TCHECK(pptr[0]);
814 plen = pptr[0]; /* get prefix length */
815
816 plen-=(24+64); /* adjust prefixlen - labellength - RD len*/
817
818 if (152 < plen)
819 return -1;
820
821 memset(&addr, 0, sizeof(addr));
822 TCHECK2(pptr[12], (plen + 7) / 8);
823 memcpy(&addr, &pptr[12], (plen + 7) / 8);
824 if (plen % 8) {
825 addr[(plen + 7) / 8 - 1] &=
826 ((0xff00 >> (plen % 8)) & 0xff);
827 }
828 /* the label may get offsetted by 4 bits so lets shift it right */
829 snprintf(buf, buflen, "RD: %s, %s/%d, label:%u %s",
830 bgp_vpn_rd_print(pptr+4),
831 isonsap_string(addr,(plen + 7) / 8 - 1),
832 plen,
833 EXTRACT_24BITS(pptr+1)>>4,
834 ((pptr[3]&1)==0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
835
836 return 12 + (plen + 7) / 8;
837
838trunc:
839 return -2;
840}
841
842static int
843bgp_attr_print(const struct bgp_attr *attr, const u_char *pptr, int len)
844{
845 int i;
846 u_int16_t af;
847 u_int8_t safi, snpa;
848 union { /* copy buffer for bandwidth values */
849 float f;
850 u_int32_t i;
851 } bw;
852 int advance;
853 int tlen;
854 const u_char *tptr;
855 char buf[MAXHOSTNAMELEN + 100];
856 char tokbuf[TOKBUFSIZE];
857
858 tptr = pptr;
859 tlen=len;
860
861 switch (attr->bgpa_type) {
862 case BGPTYPE_ORIGIN:
863 if (len != 1)
864 printf("invalid len");
865 else {
866 TCHECK(*tptr);
867 printf("%s", tok2strbuf(bgp_origin_values,
868 "Unknown Origin Typecode",
869 tptr[0],
870 tokbuf, sizeof(tokbuf)));
871 }
872 break;
873
874 case BGPTYPE_AS_PATH:
875 if (len % 2) {
876 printf("invalid len");
877 break;
878 }
879 if (!len) {
880 printf("empty");
881 break;
882 }
883
884 while (tptr < pptr + len) {
885 TCHECK(tptr[0]);
886 printf("%s", tok2strbuf(bgp_as_path_segment_open_values,
887 "?", tptr[0],
888 tokbuf, sizeof(tokbuf)));
889 for (i = 0; i < tptr[1] * 2; i += 2) {
890 TCHECK2(tptr[2 + i], 2);
891 printf("%u ", EXTRACT_16BITS(&tptr[2 + i]));
892 }
893 TCHECK(tptr[0]);
894 printf("%s", tok2strbuf(bgp_as_path_segment_close_values,
895 "?", tptr[0],
896 tokbuf, sizeof(tokbuf)));
897 TCHECK(tptr[1]);
898 tptr += 2 + tptr[1] * 2;
899 }
900 break;
901 case BGPTYPE_NEXT_HOP:
902 if (len != 4)
903 printf("invalid len");
904 else {
--- 76 unchanged lines hidden (view full) ---
981 }
982 break;
983 case BGPTYPE_MP_REACH_NLRI:
984 TCHECK2(tptr[0], 3);
985 af = EXTRACT_16BITS(tptr);
986 safi = tptr[2];
987
988 printf("\n\t AFI: %s (%u), %sSAFI: %s (%u)",
989 tok2strbuf(bgp_afi_values, "Unknown AFI", af,
990 tokbuf, sizeof(tokbuf)),
991 af,
992 (safi>128) ? "vendor specific " : "", /* 128 is meanwhile wellknown */
993 tok2strbuf(bgp_safi_values, "Unknown SAFI", safi,
994 tokbuf, sizeof(tokbuf)),
995 safi);
996
997 switch(af<<8 | safi) {
998 case (AFNUM_INET<<8 | SAFNUM_UNICAST):
999 case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
1000 case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
1001 case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
1002 case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
1003 case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
1004 case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
1005 case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
1006#ifdef INET6
1007 case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
1008 case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
1009 case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
1010 case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
1011 case (AFNUM_INET6<<8 | SAFNUM_RT_ROUTING_INFO):
1012 case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
1013 case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
1014 case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
1015#endif
1016 case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
1017 case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
1018 case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):
1019 case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST):
1020 case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
1021 case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):
1022 case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST):
1023 case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
1024 case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
1025 break;
1026 default:
1027 printf("\n\t no AFI %u / SAFI %u decoder",af,safi);
1028 if (vflag <= 1)
1029 print_unknown_data(tptr,"\n\t ",tlen);
1030 goto done;
1031 break;
1032 }
1033
1034 tptr +=3;
1035
1036 TCHECK(tptr[0]);
1037 tlen = tptr[0];
1038 tptr++;
1039
1040 if (tlen) {
1041 printf("\n\t nexthop: ");
1042 while (tlen > 0) {
1043 switch(af<<8 | safi) {
1044 case (AFNUM_INET<<8 | SAFNUM_UNICAST):
1045 case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
1046 case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
1047 case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
1048 case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
1049 if (tlen < (int)sizeof(struct in_addr)) {
1050 printf("invalid len");
1051 tlen = 0;
1052 } else {
1053 TCHECK2(tptr[0], sizeof(struct in_addr));
1054 printf("%s",getname(tptr));
1055 tlen -= sizeof(struct in_addr);
1056 tptr += sizeof(struct in_addr);
1057 }
1058 break;
1059 case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
1060 case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
1061 case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
1062 if (tlen < (int)(sizeof(struct in_addr)+BGP_VPN_RD_LEN)) {
1063 printf("invalid len");
1064 tlen = 0;
1065 } else {
1066 TCHECK2(tptr[0], sizeof(struct in_addr)+BGP_VPN_RD_LEN);
1067 printf("RD: %s, %s",
1068 bgp_vpn_rd_print(tptr),
1069 getname(tptr+BGP_VPN_RD_LEN));
1070 tlen -= (sizeof(struct in_addr)+BGP_VPN_RD_LEN);
1071 tptr += (sizeof(struct in_addr)+BGP_VPN_RD_LEN);
1072 }
1073 break;
1074#ifdef INET6
1075 case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
1076 case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
1077 case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
1078 case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
1079 case (AFNUM_INET6<<8 | SAFNUM_RT_ROUTING_INFO):
1080 if (tlen < (int)sizeof(struct in6_addr)) {
1081 printf("invalid len");
1082 tlen = 0;
1083 } else {
1084 TCHECK2(tptr[0], sizeof(struct in6_addr));
1085 printf("%s", getname6(tptr));
1086 tlen -= sizeof(struct in6_addr);
1087 tptr += sizeof(struct in6_addr);
1088 }
1089 break;
1090 case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
1091 case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
1092 case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
1093 if (tlen < (int)(sizeof(struct in6_addr)+BGP_VPN_RD_LEN)) {
1094 printf("invalid len");
1095 tlen = 0;
1096 } else {
1097 TCHECK2(tptr[0], sizeof(struct in6_addr)+BGP_VPN_RD_LEN);
1098 printf("RD: %s, %s",
1099 bgp_vpn_rd_print(tptr),
1100 getname6(tptr+BGP_VPN_RD_LEN));
1101 tlen -= (sizeof(struct in6_addr)+BGP_VPN_RD_LEN);
1102 tptr += (sizeof(struct in6_addr)+BGP_VPN_RD_LEN);
1103 }
1104 break;
1105#endif
1106 case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST):
1107 case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
1108 case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
1109 if (tlen < (int)sizeof(struct in_addr)) {
1110 printf("invalid len");
1111 tlen = 0;
1112 } else {
1113 TCHECK2(tptr[0], sizeof(struct in_addr));
1114 printf("%s", getname(tptr));
1115 tlen -= (sizeof(struct in_addr));
1116 tptr += (sizeof(struct in_addr));
1117 }
1118 break;
1119 case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
1120 case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
1121 case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):
1122 TCHECK2(tptr[0], tlen);
1123 printf("%s",isonsap_string(tptr,tlen));
1124 tptr += tlen;
1125 tlen = 0;
1126 break;
1127
1128 case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST):
1129 case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
1130 case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):
1131 if (tlen < BGP_VPN_RD_LEN+1) {
1132 printf("invalid len");
1133 tlen = 0;
1134 } else {
1135 TCHECK2(tptr[0], tlen);
1136 printf("RD: %s, %s",
1137 bgp_vpn_rd_print(tptr),
1138 isonsap_string(tptr+BGP_VPN_RD_LEN,tlen-BGP_VPN_RD_LEN));
1139 /* rfc986 mapped IPv4 address ? */
1140 if (EXTRACT_32BITS(tptr+BGP_VPN_RD_LEN) == 0x47000601)
1141 printf(" = %s", getname(tptr+BGP_VPN_RD_LEN+4));
1142#ifdef INET6
1143 /* rfc1888 mapped IPv6 address ? */
1144 else if (EXTRACT_24BITS(tptr+BGP_VPN_RD_LEN) == 0x350000)
1145 printf(" = %s", getname6(tptr+BGP_VPN_RD_LEN+3));
1146#endif
1147 tptr += tlen;
1148 tlen = 0;
1149 }
1150 break;
1151 default:
1152 TCHECK2(tptr[0], tlen);
1153 printf("no AFI %u/SAFI %u decoder",af,safi);
1154 if (vflag <= 1)
1155 print_unknown_data(tptr,"\n\t ",tlen);
1156 tptr += tlen;
1157 tlen = 0;
1158 goto done;
1159 break;
1160 }
1161 }
1162 }
1163 tptr += tlen;
1164
1165 TCHECK(tptr[0]);
1166 snpa = tptr[0];
1167 tptr++;
1168
1169 if (snpa) {
1170 printf("\n\t %u SNPA", snpa);
1171 for (/*nothing*/; snpa > 0; snpa--) {
1172 TCHECK(tptr[0]);
1173 printf("\n\t %d bytes", tptr[0]);
1174 tptr += tptr[0] + 1;
1175 }
1176 } else {
1177 printf(", no SNPA");
1178 }
1179
1180 while (len - (tptr - pptr) > 0) {
1181 switch (af<<8 | safi) {
1182 case (AFNUM_INET<<8 | SAFNUM_UNICAST):
1183 case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
1184 case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
1185 advance = decode_prefix4(tptr, buf, sizeof(buf));
1186 if (advance == -1)
1187 printf("\n\t (illegal prefix length)");
1188 else if (advance == -2)
1189 goto trunc;
1190 else
1191 printf("\n\t %s", buf);
1192 break;
1193 case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
1194 advance = decode_labeled_prefix4(tptr, buf, sizeof(buf));
1195 if (advance == -1)
1196 printf("\n\t (illegal prefix length)");
1197 else if (advance == -2)
1198 goto trunc;
1199 else
1200 printf("\n\t %s", buf);
1201 break;
1202 case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
1203 case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
1204 case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
1205 advance = decode_labeled_vpn_prefix4(tptr, buf, sizeof(buf));
1206 if (advance == -1)
1207 printf("\n\t (illegal prefix length)");
1208 else if (advance == -2)
1209 goto trunc;
1210 else
1211 printf("\n\t %s", buf);
1212 break;
1213 case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
1214 advance = decode_rt_routing_info(tptr, buf, sizeof(buf));
1215 if (advance == -1)
1216 printf("\n\t (illegal prefix length)");
1217 else if (advance == -2)
1218 goto trunc;
1219 else
1220 printf("\n\t %s", buf);
1221 break;
1222#ifdef INET6
1223 case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
1224 case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
1225 case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
1226 advance = decode_prefix6(tptr, buf, sizeof(buf));
1227 if (advance == -1)
1228 printf("\n\t (illegal prefix length)");
1229 else if (advance == -2)
1230 goto trunc;
1231 else
1232 printf("\n\t %s", buf);
1233 break;
1234 case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
1235 advance = decode_labeled_prefix6(tptr, buf, sizeof(buf));
1236 if (advance == -1)
1237 printf("\n\t (illegal prefix length)");
1238 else if (advance == -2)
1239 goto trunc;
1240 else
1241 printf("\n\t %s", buf);
1242 break;
1243 case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
1244 case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
1245 case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
1246 advance = decode_labeled_vpn_prefix6(tptr, buf, sizeof(buf));
1247 if (advance == -1)
1248 printf("\n\t (illegal prefix length)");
1249 else if (advance == -2)
1250 goto trunc;
1251 else
1252 printf("\n\t %s", buf);
1253 break;
1254 case (AFNUM_INET6<<8 | SAFNUM_RT_ROUTING_INFO):
1255 advance = decode_rt_routing_info(tptr, buf, sizeof(buf));
1256 if (advance == -1)
1257 printf("\n\t (illegal prefix length)");
1258 else if (advance == -2)
1259 goto trunc;
1260 else
1261 printf("\n\t %s", buf);
1262 break;
1263#endif
1264 case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST):
1265 case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
1266 case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
1267 advance = decode_labeled_vpn_l2(tptr, buf, sizeof(buf));
1268 if (advance == -1)
1269 printf("\n\t (illegal length)");
1270 else if (advance == -2)
1271 goto trunc;
1272 else
1273 printf("\n\t %s", buf);
1274 break;
1275 case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
1276 case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
1277 case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):
1278 advance = decode_labeled_clnp_prefix(tptr, buf, sizeof(buf));
1279 if (advance == -1)
1280 printf("\n\t (illegal prefix length)");
1281 else if (advance == -2)
1282 goto trunc;
1283 else
1284 printf("\n\t %s", buf);
1285 break;
1286 case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST):
1287 case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
1288 case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):
1289 advance = decode_labeled_vpn_clnp_prefix(tptr, buf, sizeof(buf));
1290 if (advance == -1)
1291 printf("\n\t (illegal prefix length)");
1292 else if (advance == -2)
1293 goto trunc;
1294 else
1295 printf("\n\t %s", buf);
1296 break;
1297 default:
1298 TCHECK2(*tptr,tlen);
1299 printf("\n\t no AFI %u / SAFI %u decoder",af,safi);
1300 if (vflag <= 1)
1301 print_unknown_data(tptr,"\n\t ",tlen);
1302 advance = 0;
1303 tptr = pptr + len;
1304 break;
1305 }
1306 break;
1307
1308 tptr += advance;
1309 }
1310 done:
1311 break;
1312
1313 case BGPTYPE_MP_UNREACH_NLRI:
1314 TCHECK2(tptr[0], BGP_MP_NLRI_MINSIZE);
1315 af = EXTRACT_16BITS(tptr);
1316 safi = tptr[2];
1317
1318 printf("\n\t AFI: %s (%u), %sSAFI: %s (%u)",
1319 tok2strbuf(bgp_afi_values, "Unknown AFI", af,
1320 tokbuf, sizeof(tokbuf)),
1321 af,
1322 (safi>128) ? "vendor specific " : "", /* 128 is meanwhile wellknown */
1323 tok2strbuf(bgp_safi_values, "Unknown SAFI", safi,
1324 tokbuf, sizeof(tokbuf)),
1325 safi);
1326
1327 if (len == BGP_MP_NLRI_MINSIZE)
1328 printf("\n\t End-of-Rib Marker (empty NLRI)");
1329
1330 tptr += 3;
1331
1332 while (len - (tptr - pptr) > 0) {
1333 switch (af<<8 | safi) {
1334 case (AFNUM_INET<<8 | SAFNUM_UNICAST):
1335 case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
1336 case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
1337 advance = decode_prefix4(tptr, buf, sizeof(buf));
1338 if (advance == -1)
1339 printf("\n\t (illegal prefix length)");
1340 else if (advance == -2)
1341 goto trunc;
1342 else
1343 printf("\n\t %s", buf);
1344 break;
1345 case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
1346 advance = decode_labeled_prefix4(tptr, buf, sizeof(buf));
1347 if (advance == -1)
1348 printf("\n\t (illegal prefix length)");
1349 else if (advance == -2)
1350 goto trunc;
1351 else
1352 printf("\n\t %s", buf);
1353 break;
1354 case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
1355 case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
1356 case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
1357 advance = decode_labeled_vpn_prefix4(tptr, buf, sizeof(buf));
1358 if (advance == -1)
1359 printf("\n\t (illegal prefix length)");
1360 else if (advance == -2)
1361 goto trunc;
1362 else
1363 printf("\n\t %s", buf);
1364 break;
1365#ifdef INET6
1366 case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
1367 case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
1368 case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
1369 advance = decode_prefix6(tptr, buf, sizeof(buf));
1370 if (advance == -1)
1371 printf("\n\t (illegal prefix length)");
1372 else if (advance == -2)
1373 goto trunc;
1374 else
1375 printf("\n\t %s", buf);
1376 break;
1377 case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
1378 advance = decode_labeled_prefix6(tptr, buf, sizeof(buf));
1379 if (advance == -1)
1380 printf("\n\t (illegal prefix length)");
1381 else if (advance == -2)
1382 goto trunc;
1383 else
1384 printf("\n\t %s", buf);
1385 break;
1386 case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
1387 case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
1388 case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
1389 advance = decode_labeled_vpn_prefix6(tptr, buf, sizeof(buf));
1390 if (advance == -1)
1391 printf("\n\t (illegal prefix length)");
1392 else if (advance == -2)
1393 goto trunc;
1394 else
1395 printf("\n\t %s", buf);
1396 break;
1397#endif
1398 case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST):
1399 case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
1400 case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
1401 advance = decode_labeled_vpn_l2(tptr, buf, sizeof(buf));
1402 if (advance == -1)
1403 printf("\n\t (illegal length)");
1404 else if (advance == -2)
1405 goto trunc;
1406 else
1407 printf("\n\t %s", buf);
1408 break;
1409 case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
1410 case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
1411 case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):
1412 advance = decode_labeled_clnp_prefix(tptr, buf, sizeof(buf));
1413 if (advance == -1)
1414 printf("\n\t (illegal prefix length)");
1415 else if (advance == -2)
1416 goto trunc;
1417 else
1418 printf("\n\t %s", buf);
1419 break;
1420 case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST):
1421 case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
1422 case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):
1423 advance = decode_labeled_vpn_clnp_prefix(tptr, buf, sizeof(buf));
1424 if (advance == -1)
1425 printf("\n\t (illegal prefix length)");
1426 else if (advance == -2)
1427 goto trunc;
1428 else
1429 printf("\n\t %s", buf);
1430 break;
1431 default:
1432 TCHECK2(*(tptr-3),tlen);
1433 printf("no AFI %u / SAFI %u decoder",af,safi);
1434 if (vflag <= 1)
1435 print_unknown_data(tptr-3,"\n\t ",tlen);
1436 advance = 0;
1437 tptr = pptr + len;
1438 break;
1439 }
1440 break;
1441 tptr += advance;
1442 }
1443 break;
1444 case BGPTYPE_EXTD_COMMUNITIES:
1445 if (len % 8) {
1446 printf("invalid len");
1447 break;
1448 }
1449 while (tlen>0) {
1450 u_int16_t extd_comm;
1451
1452 TCHECK2(tptr[0], 2);
1453 extd_comm=EXTRACT_16BITS(tptr);
1454
1455 printf("\n\t %s (0x%04x), Flags [%s]",
1456 tok2strbuf(bgp_extd_comm_subtype_values,
1457 "unknown extd community typecode",
1458 extd_comm, tokbuf, sizeof(tokbuf)),
1459 extd_comm,
1460 bittok2str(bgp_extd_comm_flag_values, "none", extd_comm));
1461
1462 TCHECK2(*(tptr+2), 6);
1463 switch(extd_comm) {
1464 case BGP_EXT_COM_RT_0:
1465 case BGP_EXT_COM_RO_0:
1466 printf(": %u:%s",
--- 12 unchanged lines hidden (view full) ---
1479 EXTRACT_32BITS(tptr+2),
1480 EXTRACT_16BITS(tptr+6));
1481 break;
1482 case BGP_EXT_COM_LINKBAND:
1483 bw.i = EXTRACT_32BITS(tptr+2);
1484 printf(": bandwidth: %.3f Mbps",
1485 bw.f*8/1000000);
1486 break;
1487 case BGP_EXT_COM_CISCO_MCAST:
1488 printf(": AS %u, group %s",
1489 EXTRACT_16BITS(tptr+2),
1490 getname(tptr+4));
1491 break;
1492 case BGP_EXT_COM_VPN_ORIGIN:
1493 case BGP_EXT_COM_VPN_ORIGIN2:
1494 case BGP_EXT_COM_VPN_ORIGIN3:
1495 case BGP_EXT_COM_VPN_ORIGIN4:
1496 case BGP_EXT_COM_OSPF_RID:
1497 case BGP_EXT_COM_OSPF_RID2:
1498 printf("%s", getname(tptr+2));
1499 break;
1500 case BGP_EXT_COM_OSPF_RTYPE:
1501 case BGP_EXT_COM_OSPF_RTYPE2:
1502 printf(": area:%s, router-type:%s, metric-type:%s%s",
1503 getname(tptr+2),
1504 tok2strbuf(bgp_extd_comm_ospf_rtype_values,
1505 "unknown (0x%02x)",
1506 *(tptr+6),
1507 tokbuf, sizeof(tokbuf)),
1508 (*(tptr+7) & BGP_OSPF_RTYPE_METRIC_TYPE) ? "E2" : "",
1509 (*(tptr+6) == (BGP_OSPF_RTYPE_EXT ||BGP_OSPF_RTYPE_NSSA )) ? "E1" : "");
1510 break;
1511 case BGP_EXT_COM_L2INFO:
1512 printf(": %s Control Flags [0x%02x]:MTU %u",
1513 tok2strbuf(l2vpn_encaps_values,
1514 "unknown encaps",
1515 *(tptr+2),
1516 tokbuf, sizeof(tokbuf)),
1517 *(tptr+3),
1518 EXTRACT_16BITS(tptr+4));
1519 break;
1520 default:
1521 print_unknown_data(tptr,"\n\t ",8);
1522 break;
1523 }
1524 tlen -=8;
1525 tptr +=8;
1526 }
1527 break;
1528
1529 case BGPTYPE_ATTR_SET:
1530 TCHECK2(tptr[0], 4);
1531 printf("\n\t Origin AS: %u", EXTRACT_32BITS(tptr));
1532 tptr+=4;
1533 len -=4;
1534
1535 while (len >= 2 ) {
1536 int alen;
1537 struct bgp_attr bgpa;
1538
1539 TCHECK2(tptr[0], sizeof(bgpa));
1540 memcpy(&bgpa, tptr, sizeof(bgpa));
1541 alen = bgp_attr_len(&bgpa);
1542 tptr += bgp_attr_off(&bgpa);
1543 len -= bgp_attr_off(&bgpa);
1544
1545 printf("\n\t %s (%u), length: %u",
1546 tok2strbuf(bgp_attr_values,
1547 "Unknown Attribute", bgpa.bgpa_type,
1548 tokbuf, sizeof(tokbuf)),
1549 bgpa.bgpa_type,
1550 alen);
1551
1552 if (bgpa.bgpa_flags) {
1553 printf(", Flags [%s%s%s%s",
1554 bgpa.bgpa_flags & 0x80 ? "O" : "",
1555 bgpa.bgpa_flags & 0x40 ? "T" : "",
1556 bgpa.bgpa_flags & 0x20 ? "P" : "",
1557 bgpa.bgpa_flags & 0x10 ? "E" : "");
1558 if (bgpa.bgpa_flags & 0xf)
1559 printf("+%x", bgpa.bgpa_flags & 0xf);
1560 printf("]: ");
1561 }
1562 /* FIXME check for recursion */
1563 if (!bgp_attr_print(&bgpa, tptr, alen))
1564 return 0;
1565 tptr += alen;
1566 len -= alen;
1567 }
1568 break;
1569
1570
1571 default:
1572 TCHECK2(*pptr,len);
1573 printf("\n\t no Attribute %u decoder",attr->bgpa_type); /* we have no decoder for the attribute */
1574 if (vflag <= 1)
1575 print_unknown_data(pptr,"\n\t ",len);
1576 break;
1577 }
1578 if (vflag > 1 && len) /* omit zero length attributes*/
--- 7 unchanged lines hidden (view full) ---
1586static void
1587bgp_open_print(const u_char *dat, int length)
1588{
1589 struct bgp_open bgpo;
1590 struct bgp_opt bgpopt;
1591 int hlen;
1592 const u_char *opt;
1593 int i,cap_type,cap_len,tcap_len,cap_offset;
1594 char tokbuf[TOKBUFSIZE];
1595 char tokbuf2[TOKBUFSIZE];
1596
1597 TCHECK2(dat[0], BGP_OPEN_SIZE);
1598 memcpy(&bgpo, dat, BGP_OPEN_SIZE);
1599 hlen = ntohs(bgpo.bgpo_len);
1600
1601 printf("\n\t Version %d, ", bgpo.bgpo_version);
1602 printf("my AS %u, ", ntohs(bgpo.bgpo_myas));
1603 printf("Holdtime %us, ", ntohs(bgpo.bgpo_holdtime));
--- 13 unchanged lines hidden (view full) ---
1617 TCHECK2(opt[i], BGP_OPT_SIZE);
1618 memcpy(&bgpopt, &opt[i], BGP_OPT_SIZE);
1619 if (i + 2 + bgpopt.bgpopt_len > bgpo.bgpo_optlen) {
1620 printf("\n\t Option %d, length: %u", bgpopt.bgpopt_type, bgpopt.bgpopt_len);
1621 break;
1622 }
1623
1624 printf("\n\t Option %s (%u), length: %u",
1625 tok2strbuf(bgp_opt_values,"Unknown",
1626 bgpopt.bgpopt_type,
1627 tokbuf, sizeof(tokbuf)),
1628 bgpopt.bgpopt_type,
1629 bgpopt.bgpopt_len);
1630
1631 /* now lets decode the options we know*/
1632 switch(bgpopt.bgpopt_type) {
1633 case BGP_OPT_CAP:
1634 cap_type=opt[i+BGP_OPT_SIZE];
1635 cap_len=opt[i+BGP_OPT_SIZE+1];
1636 tcap_len=cap_len;
1637 printf("\n\t %s (%u), length: %u",
1638 tok2strbuf(bgp_capcode_values, "Unknown",
1639 cap_type, tokbuf, sizeof(tokbuf)),
1640 cap_type,
1641 cap_len);
1642 switch(cap_type) {
1643 case BGP_CAPCODE_MP:
1644 printf("\n\t\tAFI %s (%u), SAFI %s (%u)",
1645 tok2strbuf(bgp_afi_values, "Unknown",
1646 EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+2),
1647 tokbuf, sizeof(tokbuf)),
1648 EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+2),
1649 tok2strbuf(bgp_safi_values, "Unknown",
1650 opt[i+BGP_OPT_SIZE+5],
1651 tokbuf, sizeof(tokbuf)),
1652 opt[i+BGP_OPT_SIZE+5]);
1653 break;
1654 case BGP_CAPCODE_RESTART:
1655 printf("\n\t\tRestart Flags: [%s], Restart Time %us",
1656 ((opt[i+BGP_OPT_SIZE+2])&0x80) ? "R" : "none",
1657 EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+2)&0xfff);
1658 tcap_len-=2;
1659 cap_offset=4;
1660 while(tcap_len>=4) {
1661 printf("\n\t\t AFI %s (%u), SAFI %s (%u), Forwarding state preserved: %s",
1662 tok2strbuf(bgp_afi_values,"Unknown",
1663 EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+cap_offset),
1664 tokbuf, sizeof(tokbuf)),
1665 EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+cap_offset),
1666 tok2strbuf(bgp_safi_values,"Unknown",
1667 opt[i+BGP_OPT_SIZE+cap_offset+2],
1668 tokbuf2, sizeof(tokbuf2)),
1669 opt[i+BGP_OPT_SIZE+cap_offset+2],
1670 ((opt[i+BGP_OPT_SIZE+cap_offset+3])&0x80) ? "yes" : "no" );
1671 tcap_len-=4;
1672 cap_offset+=4;
1673 }
1674 break;
1675 case BGP_CAPCODE_RR:
1676 case BGP_CAPCODE_RR_CISCO:
--- 26 unchanged lines hidden (view full) ---
1703bgp_update_print(const u_char *dat, int length)
1704{
1705 struct bgp bgp;
1706 struct bgp_attr bgpa;
1707 int hlen;
1708 const u_char *p;
1709 int len;
1710 int i;
1711 char tokbuf[TOKBUFSIZE];
1712
1713 TCHECK2(dat[0], BGP_SIZE);
1714 memcpy(&bgp, dat, BGP_SIZE);
1715 hlen = ntohs(bgp.bgp_len);
1716 p = dat + BGP_SIZE; /*XXX*/
1717
1718 /* Unfeasible routes */
1719 len = EXTRACT_16BITS(p);
--- 27 unchanged lines hidden (view full) ---
1747 }
1748 }
1749#endif
1750 }
1751 p += 2 + len;
1752
1753 TCHECK2(p[0], 2);
1754 len = EXTRACT_16BITS(p);
1755
1756 if (len == 0 && length == BGP_UPDATE_MINSIZE) {
1757 printf("\n\t End-of-Rib Marker (empty NLRI)");
1758 return;
1759 }
1760
1761 if (len) {
1762 /* do something more useful!*/
1763 i = 2;
1764 while (i < 2 + len) {
1765 int alen, aoff;
1766
1767 TCHECK2(p[i], sizeof(bgpa));
1768 memcpy(&bgpa, &p[i], sizeof(bgpa));
1769 alen = bgp_attr_len(&bgpa);
1770 aoff = bgp_attr_off(&bgpa);
1771
1772 printf("\n\t %s (%u), length: %u",
1773 tok2strbuf(bgp_attr_values, "Unknown Attribute",
1774 bgpa.bgpa_type,
1775 tokbuf, sizeof(tokbuf)),
1776 bgpa.bgpa_type,
1777 alen);
1778
1779 if (bgpa.bgpa_flags) {
1780 printf(", Flags [%s%s%s%s",
1781 bgpa.bgpa_flags & 0x80 ? "O" : "",
1782 bgpa.bgpa_flags & 0x40 ? "T" : "",
1783 bgpa.bgpa_flags & 0x20 ? "P" : "",
1784 bgpa.bgpa_flags & 0x10 ? "E" : "");
1785 if (bgpa.bgpa_flags & 0xf)
1786 printf("+%x", bgpa.bgpa_flags & 0xf);
1787 printf("]: ");
1788 }
1789 if (!bgp_attr_print(&bgpa, &p[i + aoff], alen))
1790 goto trunc;
1791 i += aoff + alen;
1792 }
1793 }
1794 p += 2 + len;
1795
1796 if (dat + length > p) {
1797 printf("\n\t Updated routes:");
1798 while (dat + length > p) {
1799 char buf[MAXHOSTNAMELEN + 100];
1800 i = decode_prefix4(p, buf, sizeof(buf));
1801 if (i == -1)
--- 12 unchanged lines hidden (view full) ---
1814}
1815
1816static void
1817bgp_notification_print(const u_char *dat, int length)
1818{
1819 struct bgp_notification bgpn;
1820 int hlen;
1821 const u_char *tptr;
1822 char tokbuf[TOKBUFSIZE];
1823 char tokbuf2[TOKBUFSIZE];
1824
1825 TCHECK2(dat[0], BGP_NOTIFICATION_SIZE);
1826 memcpy(&bgpn, dat, BGP_NOTIFICATION_SIZE);
1827 hlen = ntohs(bgpn.bgpn_len);
1828
1829 /* some little sanity checking */
1830 if (length<BGP_NOTIFICATION_SIZE)
1831 return;
1832
1833 printf(", %s (%u)",
1834 tok2strbuf(bgp_notify_major_values, "Unknown Error",
1835 bgpn.bgpn_major, tokbuf, sizeof(tokbuf)),
1836 bgpn.bgpn_major);
1837
1838 switch (bgpn.bgpn_major) {
1839
1840 case BGP_NOTIFY_MAJOR_MSG:
1841 printf(", subcode %s (%u)",
1842 tok2strbuf(bgp_notify_minor_msg_values, "Unknown",
1843 bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
1844 bgpn.bgpn_minor);
1845 break;
1846 case BGP_NOTIFY_MAJOR_OPEN:
1847 printf(", subcode %s (%u)",
1848 tok2strbuf(bgp_notify_minor_open_values, "Unknown",
1849 bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
1850 bgpn.bgpn_minor);
1851 break;
1852 case BGP_NOTIFY_MAJOR_UPDATE:
1853 printf(", subcode %s (%u)",
1854 tok2strbuf(bgp_notify_minor_update_values, "Unknown",
1855 bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
1856 bgpn.bgpn_minor);
1857 break;
1858 case BGP_NOTIFY_MAJOR_CAP:
1859 printf(" subcode %s (%u)",
1860 tok2strbuf(bgp_notify_minor_cap_values, "Unknown",
1861 bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
1862 bgpn.bgpn_minor);
1863 case BGP_NOTIFY_MAJOR_CEASE:
1864 printf(", subcode %s (%u)",
1865 tok2strbuf(bgp_notify_minor_cease_values, "Unknown",
1866 bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
1867 bgpn.bgpn_minor);
1868
1869 /* draft-ietf-idr-cease-subcode-02 mentions optionally 7 bytes
1870 * for the maxprefix subtype, which may contain AFI, SAFI and MAXPREFIXES
1871 */
1872 if(bgpn.bgpn_minor == BGP_NOTIFY_MINOR_CEASE_MAXPRFX && length >= BGP_NOTIFICATION_SIZE + 7) {
1873 tptr = dat + BGP_NOTIFICATION_SIZE;
1874 TCHECK2(*tptr, 7);
1875 printf(", AFI %s (%u), SAFI %s (%u), Max Prefixes: %u",
1876 tok2strbuf(bgp_afi_values, "Unknown",
1877 EXTRACT_16BITS(tptr), tokbuf, sizeof(tokbuf)),
1878 EXTRACT_16BITS(tptr),
1879 tok2strbuf(bgp_safi_values, "Unknown", *(tptr+2),
1880 tokbuf2, sizeof(tokbuf)),
1881 *(tptr+2),
1882 EXTRACT_32BITS(tptr+3));
1883 }
1884 break;
1885 default:
1886 break;
1887 }
1888
1889 return;
1890trunc:
1891 printf("[|BGP]");
1892}
1893
1894static void
1895bgp_route_refresh_print(const u_char *pptr, int len) {
1896
1897 const struct bgp_route_refresh *bgp_route_refresh_header;
1898 char tokbuf[TOKBUFSIZE];
1899 char tokbuf2[TOKBUFSIZE];
1900
1901 bgp_route_refresh_header = (const struct bgp_route_refresh *)pptr;
1902
1903 printf("\n\t AFI %s (%u), SAFI %s (%u)",
1904 tok2strbuf(bgp_afi_values,"Unknown",
1905 /* this stinks but the compiler pads the structure
1906 * weird */
1907 EXTRACT_16BITS(&bgp_route_refresh_header->afi),
1908 tokbuf, sizeof(tokbuf)),
1909 EXTRACT_16BITS(&bgp_route_refresh_header->afi),
1910 tok2strbuf(bgp_safi_values,"Unknown",
1911 bgp_route_refresh_header->safi,
1912 tokbuf2, sizeof(tokbuf2)),
1913 bgp_route_refresh_header->safi);
1914
1915 if (vflag > 1)
1916 print_unknown_data(pptr,"\n\t ", len);
1917
1918 return;
1919}
1920
1921static int
1922bgp_header_print(const u_char *dat, int length)
1923{
1924 struct bgp bgp;
1925 char tokbuf[TOKBUFSIZE];
1926
1927 TCHECK2(dat[0], BGP_SIZE);
1928 memcpy(&bgp, dat, BGP_SIZE);
1929 printf("\n\t%s Message (%u), length: %u",
1930 tok2strbuf(bgp_msg_values, "Unknown", bgp.bgp_type,
1931 tokbuf, sizeof(tokbuf)),
1932 bgp.bgp_type,
1933 length);
1934
1935 switch (bgp.bgp_type) {
1936 case BGP_OPEN:
1937 bgp_open_print(dat, length);
1938 break;
1939 case BGP_UPDATE:
--- 26 unchanged lines hidden (view full) ---
1966 const u_char *ep;
1967 const u_char *start;
1968 const u_char marker[] = {
1969 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1970 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1971 };
1972 struct bgp bgp;
1973 u_int16_t hlen;
1974 char tokbuf[TOKBUFSIZE];
1975
1976 ep = dat + length;
1977 if (snapend < dat + length)
1978 ep = snapend;
1979
1980 printf(": BGP, length: %u",length);
1981
1982 if (vflag < 1) /* lets be less chatty */
--- 31 unchanged lines hidden (view full) ---
2014 }
2015
2016 if (TTEST2(p[0], hlen)) {
2017 if (!bgp_header_print(p, hlen))
2018 return;
2019 p += hlen;
2020 start = p;
2021 } else {
2022 printf("\n[|BGP %s]",
2023 tok2strbuf(bgp_msg_values,
2024 "Unknown Message Type",
2025 bgp.bgp_type,
2026 tokbuf, sizeof(tokbuf)));
2027 break;
2028 }
2029 }
2030
2031 return;
2032
2033trunc:
2034 printf(" [|BGP]");
2035}
2 * Copyright (C) 1999 WIDE Project.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
--- 22 unchanged lines hidden (view full) ---
31 */
32
33#ifdef HAVE_CONFIG_H
34#include "config.h"
35#endif
36
37#ifndef lint
38static const char rcsid[] _U_ =
39 "@(#) $Header: /tcpdump/master/tcpdump/print-bgp.c,v 1.91 2005/03/27 01:31:25 guy Exp $";
40#endif
41
42#include <tcpdump-stdinc.h>
43
44#include <stdio.h>
45#include <string.h>
46
47#include "interface.h"
48#include "decode_prefix.h"
49#include "addrtoname.h"
50#include "extract.h"
51#include "bgp.h"
52#include "l2vpn.h"
53
54struct bgp {
55 u_int8_t bgp_marker[16];
56 u_int16_t bgp_len;
57 u_int8_t bgp_type;
58};
59#define BGP_SIZE 19 /* unaligned */
60
--- 27 unchanged lines hidden (view full) ---
88
89struct bgp_opt {
90 u_int8_t bgpopt_type;
91 u_int8_t bgpopt_len;
92 /* variable length */
93};
94#define BGP_OPT_SIZE 2 /* some compilers may pad to 4 bytes */
95
96#define BGP_UPDATE_MINSIZE 23
97
98struct bgp_notification {
99 u_int8_t bgpn_marker[16];
100 u_int16_t bgpn_len;
101 u_int8_t bgpn_type;
102 u_int8_t bgpn_major;
103 u_int8_t bgpn_minor;
104};
105#define BGP_NOTIFICATION_SIZE 21 /* unaligned */
--- 33 unchanged lines hidden (view full) ---
139#define BGPTYPE_ORIGINATOR_ID 9 /* RFC1998 */
140#define BGPTYPE_CLUSTER_LIST 10 /* RFC1998 */
141#define BGPTYPE_DPA 11 /* draft-ietf-idr-bgp-dpa */
142#define BGPTYPE_ADVERTISERS 12 /* RFC1863 */
143#define BGPTYPE_RCID_PATH 13 /* RFC1863 */
144#define BGPTYPE_MP_REACH_NLRI 14 /* RFC2283 */
145#define BGPTYPE_MP_UNREACH_NLRI 15 /* RFC2283 */
146#define BGPTYPE_EXTD_COMMUNITIES 16 /* draft-ietf-idr-bgp-ext-communities */
147#define BGPTYPE_ATTR_SET 128 /* draft-marques-ppvpn-ibgp */
148
149#define BGP_MP_NLRI_MINSIZE 3 /* End of RIB Marker detection */
150
151static struct tok bgp_attr_values[] = {
152 { BGPTYPE_ORIGIN, "Origin"},
153 { BGPTYPE_AS_PATH, "AS Path"},
154 { BGPTYPE_NEXT_HOP, "Next Hop"},
155 { BGPTYPE_MULTI_EXIT_DISC, "Multi Exit Discriminator"},
156 { BGPTYPE_LOCAL_PREF, "Local Preference"},
157 { BGPTYPE_ATOMIC_AGGREGATE, "Atomic Aggregate"},
158 { BGPTYPE_AGGREGATOR, "Aggregator"},
159 { BGPTYPE_COMMUNITIES, "Community"},
160 { BGPTYPE_ORIGINATOR_ID, "Originator ID"},
161 { BGPTYPE_CLUSTER_LIST, "Cluster List"},
162 { BGPTYPE_DPA, "DPA"},
163 { BGPTYPE_ADVERTISERS, "Advertisers"},
164 { BGPTYPE_RCID_PATH, "RCID Path / Cluster ID"},
165 { BGPTYPE_MP_REACH_NLRI, "Multi-Protocol Reach NLRI"},
166 { BGPTYPE_MP_UNREACH_NLRI, "Multi-Protocol Unreach NLRI"},
167 { BGPTYPE_EXTD_COMMUNITIES, "Extended Community"},
168 { BGPTYPE_ATTR_SET, "Attribute Set"},
169 { 255, "Reserved for development"},
170 { 0, NULL}
171};
172
173#define BGP_AS_SET 1
174#define BGP_AS_SEQUENCE 2
175#define BGP_CONFED_AS_SEQUENCE 3 /* draft-ietf-idr-rfc3065bis-01 */
176#define BGP_CONFED_AS_SET 4 /* draft-ietf-idr-rfc3065bis-01 */
--- 21 unchanged lines hidden (view full) ---
198static struct tok bgp_opt_values[] = {
199 { BGP_OPT_AUTH, "Authentication Information"},
200 { BGP_OPT_CAP, "Capabilities Advertisement"},
201 { 0, NULL}
202};
203
204#define BGP_CAPCODE_MP 1
205#define BGP_CAPCODE_RR 2
206#define BGP_CAPCODE_ORF 3 /* XXX */
207#define BGP_CAPCODE_RESTART 64 /* draft-ietf-idr-restart-05 */
208#define BGP_CAPCODE_AS_NEW 65 /* XXX */
209#define BGP_CAPCODE_DYN_CAP 67 /* XXX */
210#define BGP_CAPCODE_RR_CISCO 128
211
212static struct tok bgp_capcode_values[] = {
213 { BGP_CAPCODE_MP, "Multiprotocol Extensions"},
214 { BGP_CAPCODE_RR, "Route Refresh"},
215 { BGP_CAPCODE_ORF, "Cooperative Route Filtering"},
216 { BGP_CAPCODE_RESTART, "Graceful Restart"},
217 { BGP_CAPCODE_AS_NEW, "32-Bit AS Number"},
218 { BGP_CAPCODE_DYN_CAP, "Dynamic Capability"},
219 { BGP_CAPCODE_RR_CISCO, "Route Refresh (Cisco)"},
220 { 0, NULL}
221};
222
223#define BGP_NOTIFY_MAJOR_MSG 1
224#define BGP_NOTIFY_MAJOR_OPEN 2
225#define BGP_NOTIFY_MAJOR_UPDATE 3
226#define BGP_NOTIFY_MAJOR_HOLDTIME 4
--- 74 unchanged lines hidden (view full) ---
301
302/* Subsequent address family identifier, RFC2283 section 7 */
303#define SAFNUM_RES 0
304#define SAFNUM_UNICAST 1
305#define SAFNUM_MULTICAST 2
306#define SAFNUM_UNIMULTICAST 3
307/* labeled BGP RFC3107 */
308#define SAFNUM_LABUNICAST 4
309#define SAFNUM_TUNNEL 64 /* XXX */
310#define SAFNUM_VPLS 65 /* XXX */
311#define SAFNUM_MDT 66 /* XXX */
312/* Section 4.3.4 of draft-rosen-rfc2547bis-03.txt */
313#define SAFNUM_VPNUNICAST 128
314#define SAFNUM_VPNMULTICAST 129
315#define SAFNUM_VPNUNIMULTICAST 130
316/* draft-marques-ppvpn-rt-constrain-01.txt */
317#define SAFNUM_RT_ROUTING_INFO 132
318
319#define BGP_VPN_RD_LEN 8
320
321static struct tok bgp_safi_values[] = {
322 { SAFNUM_RES, "Reserved"},
323 { SAFNUM_UNICAST, "Unicast"},
324 { SAFNUM_MULTICAST, "Multicast"},
325 { SAFNUM_UNIMULTICAST, "Unicast+Multicast"},
326 { SAFNUM_LABUNICAST, "labeled Unicast"},
327 { SAFNUM_TUNNEL, "Tunnel"},
328 { SAFNUM_VPLS, "VPLS"},
329 { SAFNUM_MDT, "MDT"},
330 { SAFNUM_VPNUNICAST, "labeled VPN Unicast"},
331 { SAFNUM_VPNMULTICAST, "labeled VPN Multicast"},
332 { SAFNUM_VPNUNIMULTICAST, "labeled VPN Unicast+Multicast"},
333 { SAFNUM_RT_ROUTING_INFO, "Route Target Routing Information"}, /* draft-marques-ppvpn-rt-constrain-01.txt */
334 { 0, NULL }
335};
336
337/* well-known community */
338#define BGP_COMMUNITY_NO_EXPORT 0xffffff01
339#define BGP_COMMUNITY_NO_ADVERT 0xffffff02
340#define BGP_COMMUNITY_NO_EXPORT_SUBCONFED 0xffffff03
341
--- 41 unchanged lines hidden (view full) ---
383#define BGP_EXT_COM_RT_0 0x0002 /* Route Target,Format AS(2bytes):AN(4bytes) */
384#define BGP_EXT_COM_RT_1 0x0102 /* Route Target,Format IP address:AN(2bytes) */
385#define BGP_EXT_COM_RT_2 0x0202 /* Route Target,Format AN(4bytes):local(2bytes) */
386#define BGP_EXT_COM_RO_0 0x0003 /* Route Origin,Format AS(2bytes):AN(4bytes) */
387#define BGP_EXT_COM_RO_1 0x0103 /* Route Origin,Format IP address:AN(2bytes) */
388#define BGP_EXT_COM_RO_2 0x0203 /* Route Origin,Format AN(4bytes):local(2bytes) */
389#define BGP_EXT_COM_LINKBAND 0x4004 /* Link Bandwidth,Format AS(2B):Bandwidth(4B) */
390 /* rfc2547 bgp-mpls-vpns */
391#define BGP_EXT_COM_CISCO_MCAST 0x0009 /* cisco proprietary */
392
393#define BGP_EXT_COM_VPN_ORIGIN 0x0005 /* OSPF Domain ID / VPN of Origin - draft-rosen-vpns-ospf-bgp-mpls */
394#define BGP_EXT_COM_VPN_ORIGIN2 0x0105 /* duplicate - keep for backwards compatability */
395#define BGP_EXT_COM_VPN_ORIGIN3 0x0205 /* duplicate - keep for backwards compatability */
396#define BGP_EXT_COM_VPN_ORIGIN4 0x8005 /* duplicate - keep for backwards compatability */
397
398#define BGP_EXT_COM_OSPF_RTYPE 0x0306 /* OSPF Route Type,Format Area(4B):RouteType(1B):Options(1B) */
399#define BGP_EXT_COM_OSPF_RTYPE2 0x8000 /* duplicate - keep for backwards compatability */
--- 12 unchanged lines hidden (view full) ---
412static struct tok bgp_extd_comm_subtype_values[] = {
413 { BGP_EXT_COM_RT_0, "target"},
414 { BGP_EXT_COM_RT_1, "target"},
415 { BGP_EXT_COM_RT_2, "target"},
416 { BGP_EXT_COM_RO_0, "origin"},
417 { BGP_EXT_COM_RO_1, "origin"},
418 { BGP_EXT_COM_RO_2, "origin"},
419 { BGP_EXT_COM_LINKBAND, "link-BW"},
420 { BGP_EXT_COM_CISCO_MCAST, "mdt-group"},
421 { BGP_EXT_COM_VPN_ORIGIN, "ospf-domain"},
422 { BGP_EXT_COM_VPN_ORIGIN2, "ospf-domain"},
423 { BGP_EXT_COM_VPN_ORIGIN3, "ospf-domain"},
424 { BGP_EXT_COM_VPN_ORIGIN4, "ospf-domain"},
425 { BGP_EXT_COM_OSPF_RTYPE, "ospf-route-type"},
426 { BGP_EXT_COM_OSPF_RTYPE2, "ospf-route-type"},
427 { BGP_EXT_COM_OSPF_RID, "ospf-router-id"},
428 { BGP_EXT_COM_OSPF_RID2, "ospf-router-id"},
--- 15 unchanged lines hidden (view full) ---
444 { BGP_OSPF_RTYPE_NET, "Network" },
445 { BGP_OSPF_RTYPE_SUM, "Summary" },
446 { BGP_OSPF_RTYPE_EXT, "External" },
447 { BGP_OSPF_RTYPE_NSSA,"NSSA External" },
448 { BGP_OSPF_RTYPE_SHAM,"MPLS-VPN Sham" },
449 { 0, NULL },
450};
451
452int
453decode_prefix4(const u_char *pptr, char *buf, u_int buflen)
454{
455 struct in_addr addr;
456 u_int plen;
457
458 TCHECK(pptr[0]);
459 plen = pptr[0];
460 if (32 < plen)
--- 53 unchanged lines hidden (view full) ---
514
515trunc:
516 return -2;
517}
518
519/* RDs and RTs share the same semantics
520 * we use bgp_vpn_rd_print for
521 * printing route targets inside a NLRI */
522char *
523bgp_vpn_rd_print (const u_char *pptr) {
524
525 /* allocate space for the largest possible string */
526 static char rd[sizeof("xxxxxxxxxx:xxxxx (xxx.xxx.xxx.xxx:xxxxx)")];
527 char *pos = rd;
528
529 /* ok lets load the RD format */
530 switch (EXTRACT_16BITS(pptr)) {
531
532 /* AS:IP-address fmt*/
533 case 0:
534 snprintf(pos, sizeof(rd) - (pos - rd), "%u:%u.%u.%u.%u",
535 EXTRACT_16BITS(pptr+2), *(pptr+4), *(pptr+5), *(pptr+6), *(pptr+7));
536 break;
537 /* IP-address:AS fmt*/
538
539 case 1:
540 snprintf(pos, sizeof(rd) - (pos - rd), "%u.%u.%u.%u:%u",
541 *(pptr+2), *(pptr+3), *(pptr+4), *(pptr+5), EXTRACT_16BITS(pptr+6));
542 break;
543
544 /* 4-byte-AS:number fmt*/
545 case 2:
546 snprintf(pos, sizeof(rd) - (pos - rd), "%u:%u (%u.%u.%u.%u:%u)",
547 EXTRACT_32BITS(pptr+2), EXTRACT_16BITS(pptr+6),
548 *(pptr+2), *(pptr+3), *(pptr+4), *(pptr+5), EXTRACT_16BITS(pptr+6));
549 break;
550 default:
551 snprintf(pos, sizeof(rd) - (pos - rd), "unknown RD format");
552 break;
553 }
554 pos += strlen(pos);
555 *(pos) = '\0';
556 return (rd);
--- 115 unchanged lines hidden (view full) ---
672 }
673 return plen+2;
674
675trunc:
676 return -2;
677}
678
679#ifdef INET6
680int
681decode_prefix6(const u_char *pd, char *buf, u_int buflen)
682{
683 struct in6_addr addr;
684 u_int plen;
685
686 TCHECK(pd[0]);
687 plen = pd[0];
688 if (128 < plen)
--- 78 unchanged lines hidden (view full) ---
767 return 12 + (plen + 7) / 8;
768
769trunc:
770 return -2;
771}
772#endif
773
774static int
775decode_labeled_clnp_prefix(const u_char *pptr, char *buf, u_int buflen)
776{
777 u_int8_t addr[19];
778 u_int plen;
779
780 TCHECK(pptr[0]);
781 plen = pptr[0]; /* get prefix length */
782 plen-=24; /* adjust prefixlen - labellength */
783
784 if (152 < plen)
785 return -1;
786
787 memset(&addr, 0, sizeof(addr));
788 TCHECK2(pptr[4], (plen + 7) / 8);
789 memcpy(&addr, &pptr[4], (plen + 7) / 8);
790 if (plen % 8) {
791 addr[(plen + 7) / 8 - 1] &=
792 ((0xff00 >> (plen % 8)) & 0xff);
793 }
794 /* the label may get offsetted by 4 bits so lets shift it right */
795 snprintf(buf, buflen, "%s/%d, label:%u %s",
796 isonsap_string(addr,(plen + 7) / 8 - 1),
797 plen,
798 EXTRACT_24BITS(pptr+1)>>4,
799 ((pptr[3]&1)==0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
800
801 return 4 + (plen + 7) / 8;
802
803trunc:
804 return -2;
805}
806
807static int
808decode_labeled_vpn_clnp_prefix(const u_char *pptr, char *buf, u_int buflen)
809{
810 u_int8_t addr[19];
811 u_int plen;
812
813 TCHECK(pptr[0]);
814 plen = pptr[0]; /* get prefix length */
815
816 plen-=(24+64); /* adjust prefixlen - labellength - RD len*/
817
818 if (152 < plen)
819 return -1;
820
821 memset(&addr, 0, sizeof(addr));
822 TCHECK2(pptr[12], (plen + 7) / 8);
823 memcpy(&addr, &pptr[12], (plen + 7) / 8);
824 if (plen % 8) {
825 addr[(plen + 7) / 8 - 1] &=
826 ((0xff00 >> (plen % 8)) & 0xff);
827 }
828 /* the label may get offsetted by 4 bits so lets shift it right */
829 snprintf(buf, buflen, "RD: %s, %s/%d, label:%u %s",
830 bgp_vpn_rd_print(pptr+4),
831 isonsap_string(addr,(plen + 7) / 8 - 1),
832 plen,
833 EXTRACT_24BITS(pptr+1)>>4,
834 ((pptr[3]&1)==0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
835
836 return 12 + (plen + 7) / 8;
837
838trunc:
839 return -2;
840}
841
842static int
843bgp_attr_print(const struct bgp_attr *attr, const u_char *pptr, int len)
844{
845 int i;
846 u_int16_t af;
847 u_int8_t safi, snpa;
848 union { /* copy buffer for bandwidth values */
849 float f;
850 u_int32_t i;
851 } bw;
852 int advance;
853 int tlen;
854 const u_char *tptr;
855 char buf[MAXHOSTNAMELEN + 100];
856 char tokbuf[TOKBUFSIZE];
857
858 tptr = pptr;
859 tlen=len;
860
861 switch (attr->bgpa_type) {
862 case BGPTYPE_ORIGIN:
863 if (len != 1)
864 printf("invalid len");
865 else {
866 TCHECK(*tptr);
867 printf("%s", tok2strbuf(bgp_origin_values,
868 "Unknown Origin Typecode",
869 tptr[0],
870 tokbuf, sizeof(tokbuf)));
871 }
872 break;
873
874 case BGPTYPE_AS_PATH:
875 if (len % 2) {
876 printf("invalid len");
877 break;
878 }
879 if (!len) {
880 printf("empty");
881 break;
882 }
883
884 while (tptr < pptr + len) {
885 TCHECK(tptr[0]);
886 printf("%s", tok2strbuf(bgp_as_path_segment_open_values,
887 "?", tptr[0],
888 tokbuf, sizeof(tokbuf)));
889 for (i = 0; i < tptr[1] * 2; i += 2) {
890 TCHECK2(tptr[2 + i], 2);
891 printf("%u ", EXTRACT_16BITS(&tptr[2 + i]));
892 }
893 TCHECK(tptr[0]);
894 printf("%s", tok2strbuf(bgp_as_path_segment_close_values,
895 "?", tptr[0],
896 tokbuf, sizeof(tokbuf)));
897 TCHECK(tptr[1]);
898 tptr += 2 + tptr[1] * 2;
899 }
900 break;
901 case BGPTYPE_NEXT_HOP:
902 if (len != 4)
903 printf("invalid len");
904 else {
--- 76 unchanged lines hidden (view full) ---
981 }
982 break;
983 case BGPTYPE_MP_REACH_NLRI:
984 TCHECK2(tptr[0], 3);
985 af = EXTRACT_16BITS(tptr);
986 safi = tptr[2];
987
988 printf("\n\t AFI: %s (%u), %sSAFI: %s (%u)",
989 tok2strbuf(bgp_afi_values, "Unknown AFI", af,
990 tokbuf, sizeof(tokbuf)),
991 af,
992 (safi>128) ? "vendor specific " : "", /* 128 is meanwhile wellknown */
993 tok2strbuf(bgp_safi_values, "Unknown SAFI", safi,
994 tokbuf, sizeof(tokbuf)),
995 safi);
996
997 switch(af<<8 | safi) {
998 case (AFNUM_INET<<8 | SAFNUM_UNICAST):
999 case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
1000 case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
1001 case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
1002 case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
1003 case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
1004 case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
1005 case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
1006#ifdef INET6
1007 case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
1008 case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
1009 case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
1010 case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
1011 case (AFNUM_INET6<<8 | SAFNUM_RT_ROUTING_INFO):
1012 case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
1013 case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
1014 case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
1015#endif
1016 case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
1017 case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
1018 case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):
1019 case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST):
1020 case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
1021 case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):
1022 case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST):
1023 case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
1024 case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
1025 break;
1026 default:
1027 printf("\n\t no AFI %u / SAFI %u decoder",af,safi);
1028 if (vflag <= 1)
1029 print_unknown_data(tptr,"\n\t ",tlen);
1030 goto done;
1031 break;
1032 }
1033
1034 tptr +=3;
1035
1036 TCHECK(tptr[0]);
1037 tlen = tptr[0];
1038 tptr++;
1039
1040 if (tlen) {
1041 printf("\n\t nexthop: ");
1042 while (tlen > 0) {
1043 switch(af<<8 | safi) {
1044 case (AFNUM_INET<<8 | SAFNUM_UNICAST):
1045 case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
1046 case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
1047 case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
1048 case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
1049 if (tlen < (int)sizeof(struct in_addr)) {
1050 printf("invalid len");
1051 tlen = 0;
1052 } else {
1053 TCHECK2(tptr[0], sizeof(struct in_addr));
1054 printf("%s",getname(tptr));
1055 tlen -= sizeof(struct in_addr);
1056 tptr += sizeof(struct in_addr);
1057 }
1058 break;
1059 case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
1060 case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
1061 case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
1062 if (tlen < (int)(sizeof(struct in_addr)+BGP_VPN_RD_LEN)) {
1063 printf("invalid len");
1064 tlen = 0;
1065 } else {
1066 TCHECK2(tptr[0], sizeof(struct in_addr)+BGP_VPN_RD_LEN);
1067 printf("RD: %s, %s",
1068 bgp_vpn_rd_print(tptr),
1069 getname(tptr+BGP_VPN_RD_LEN));
1070 tlen -= (sizeof(struct in_addr)+BGP_VPN_RD_LEN);
1071 tptr += (sizeof(struct in_addr)+BGP_VPN_RD_LEN);
1072 }
1073 break;
1074#ifdef INET6
1075 case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
1076 case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
1077 case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
1078 case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
1079 case (AFNUM_INET6<<8 | SAFNUM_RT_ROUTING_INFO):
1080 if (tlen < (int)sizeof(struct in6_addr)) {
1081 printf("invalid len");
1082 tlen = 0;
1083 } else {
1084 TCHECK2(tptr[0], sizeof(struct in6_addr));
1085 printf("%s", getname6(tptr));
1086 tlen -= sizeof(struct in6_addr);
1087 tptr += sizeof(struct in6_addr);
1088 }
1089 break;
1090 case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
1091 case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
1092 case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
1093 if (tlen < (int)(sizeof(struct in6_addr)+BGP_VPN_RD_LEN)) {
1094 printf("invalid len");
1095 tlen = 0;
1096 } else {
1097 TCHECK2(tptr[0], sizeof(struct in6_addr)+BGP_VPN_RD_LEN);
1098 printf("RD: %s, %s",
1099 bgp_vpn_rd_print(tptr),
1100 getname6(tptr+BGP_VPN_RD_LEN));
1101 tlen -= (sizeof(struct in6_addr)+BGP_VPN_RD_LEN);
1102 tptr += (sizeof(struct in6_addr)+BGP_VPN_RD_LEN);
1103 }
1104 break;
1105#endif
1106 case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST):
1107 case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
1108 case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
1109 if (tlen < (int)sizeof(struct in_addr)) {
1110 printf("invalid len");
1111 tlen = 0;
1112 } else {
1113 TCHECK2(tptr[0], sizeof(struct in_addr));
1114 printf("%s", getname(tptr));
1115 tlen -= (sizeof(struct in_addr));
1116 tptr += (sizeof(struct in_addr));
1117 }
1118 break;
1119 case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
1120 case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
1121 case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):
1122 TCHECK2(tptr[0], tlen);
1123 printf("%s",isonsap_string(tptr,tlen));
1124 tptr += tlen;
1125 tlen = 0;
1126 break;
1127
1128 case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST):
1129 case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
1130 case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):
1131 if (tlen < BGP_VPN_RD_LEN+1) {
1132 printf("invalid len");
1133 tlen = 0;
1134 } else {
1135 TCHECK2(tptr[0], tlen);
1136 printf("RD: %s, %s",
1137 bgp_vpn_rd_print(tptr),
1138 isonsap_string(tptr+BGP_VPN_RD_LEN,tlen-BGP_VPN_RD_LEN));
1139 /* rfc986 mapped IPv4 address ? */
1140 if (EXTRACT_32BITS(tptr+BGP_VPN_RD_LEN) == 0x47000601)
1141 printf(" = %s", getname(tptr+BGP_VPN_RD_LEN+4));
1142#ifdef INET6
1143 /* rfc1888 mapped IPv6 address ? */
1144 else if (EXTRACT_24BITS(tptr+BGP_VPN_RD_LEN) == 0x350000)
1145 printf(" = %s", getname6(tptr+BGP_VPN_RD_LEN+3));
1146#endif
1147 tptr += tlen;
1148 tlen = 0;
1149 }
1150 break;
1151 default:
1152 TCHECK2(tptr[0], tlen);
1153 printf("no AFI %u/SAFI %u decoder",af,safi);
1154 if (vflag <= 1)
1155 print_unknown_data(tptr,"\n\t ",tlen);
1156 tptr += tlen;
1157 tlen = 0;
1158 goto done;
1159 break;
1160 }
1161 }
1162 }
1163 tptr += tlen;
1164
1165 TCHECK(tptr[0]);
1166 snpa = tptr[0];
1167 tptr++;
1168
1169 if (snpa) {
1170 printf("\n\t %u SNPA", snpa);
1171 for (/*nothing*/; snpa > 0; snpa--) {
1172 TCHECK(tptr[0]);
1173 printf("\n\t %d bytes", tptr[0]);
1174 tptr += tptr[0] + 1;
1175 }
1176 } else {
1177 printf(", no SNPA");
1178 }
1179
1180 while (len - (tptr - pptr) > 0) {
1181 switch (af<<8 | safi) {
1182 case (AFNUM_INET<<8 | SAFNUM_UNICAST):
1183 case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
1184 case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
1185 advance = decode_prefix4(tptr, buf, sizeof(buf));
1186 if (advance == -1)
1187 printf("\n\t (illegal prefix length)");
1188 else if (advance == -2)
1189 goto trunc;
1190 else
1191 printf("\n\t %s", buf);
1192 break;
1193 case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
1194 advance = decode_labeled_prefix4(tptr, buf, sizeof(buf));
1195 if (advance == -1)
1196 printf("\n\t (illegal prefix length)");
1197 else if (advance == -2)
1198 goto trunc;
1199 else
1200 printf("\n\t %s", buf);
1201 break;
1202 case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
1203 case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
1204 case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
1205 advance = decode_labeled_vpn_prefix4(tptr, buf, sizeof(buf));
1206 if (advance == -1)
1207 printf("\n\t (illegal prefix length)");
1208 else if (advance == -2)
1209 goto trunc;
1210 else
1211 printf("\n\t %s", buf);
1212 break;
1213 case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
1214 advance = decode_rt_routing_info(tptr, buf, sizeof(buf));
1215 if (advance == -1)
1216 printf("\n\t (illegal prefix length)");
1217 else if (advance == -2)
1218 goto trunc;
1219 else
1220 printf("\n\t %s", buf);
1221 break;
1222#ifdef INET6
1223 case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
1224 case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
1225 case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
1226 advance = decode_prefix6(tptr, buf, sizeof(buf));
1227 if (advance == -1)
1228 printf("\n\t (illegal prefix length)");
1229 else if (advance == -2)
1230 goto trunc;
1231 else
1232 printf("\n\t %s", buf);
1233 break;
1234 case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
1235 advance = decode_labeled_prefix6(tptr, buf, sizeof(buf));
1236 if (advance == -1)
1237 printf("\n\t (illegal prefix length)");
1238 else if (advance == -2)
1239 goto trunc;
1240 else
1241 printf("\n\t %s", buf);
1242 break;
1243 case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
1244 case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
1245 case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
1246 advance = decode_labeled_vpn_prefix6(tptr, buf, sizeof(buf));
1247 if (advance == -1)
1248 printf("\n\t (illegal prefix length)");
1249 else if (advance == -2)
1250 goto trunc;
1251 else
1252 printf("\n\t %s", buf);
1253 break;
1254 case (AFNUM_INET6<<8 | SAFNUM_RT_ROUTING_INFO):
1255 advance = decode_rt_routing_info(tptr, buf, sizeof(buf));
1256 if (advance == -1)
1257 printf("\n\t (illegal prefix length)");
1258 else if (advance == -2)
1259 goto trunc;
1260 else
1261 printf("\n\t %s", buf);
1262 break;
1263#endif
1264 case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST):
1265 case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
1266 case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
1267 advance = decode_labeled_vpn_l2(tptr, buf, sizeof(buf));
1268 if (advance == -1)
1269 printf("\n\t (illegal length)");
1270 else if (advance == -2)
1271 goto trunc;
1272 else
1273 printf("\n\t %s", buf);
1274 break;
1275 case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
1276 case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
1277 case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):
1278 advance = decode_labeled_clnp_prefix(tptr, buf, sizeof(buf));
1279 if (advance == -1)
1280 printf("\n\t (illegal prefix length)");
1281 else if (advance == -2)
1282 goto trunc;
1283 else
1284 printf("\n\t %s", buf);
1285 break;
1286 case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST):
1287 case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
1288 case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):
1289 advance = decode_labeled_vpn_clnp_prefix(tptr, buf, sizeof(buf));
1290 if (advance == -1)
1291 printf("\n\t (illegal prefix length)");
1292 else if (advance == -2)
1293 goto trunc;
1294 else
1295 printf("\n\t %s", buf);
1296 break;
1297 default:
1298 TCHECK2(*tptr,tlen);
1299 printf("\n\t no AFI %u / SAFI %u decoder",af,safi);
1300 if (vflag <= 1)
1301 print_unknown_data(tptr,"\n\t ",tlen);
1302 advance = 0;
1303 tptr = pptr + len;
1304 break;
1305 }
1306 break;
1307
1308 tptr += advance;
1309 }
1310 done:
1311 break;
1312
1313 case BGPTYPE_MP_UNREACH_NLRI:
1314 TCHECK2(tptr[0], BGP_MP_NLRI_MINSIZE);
1315 af = EXTRACT_16BITS(tptr);
1316 safi = tptr[2];
1317
1318 printf("\n\t AFI: %s (%u), %sSAFI: %s (%u)",
1319 tok2strbuf(bgp_afi_values, "Unknown AFI", af,
1320 tokbuf, sizeof(tokbuf)),
1321 af,
1322 (safi>128) ? "vendor specific " : "", /* 128 is meanwhile wellknown */
1323 tok2strbuf(bgp_safi_values, "Unknown SAFI", safi,
1324 tokbuf, sizeof(tokbuf)),
1325 safi);
1326
1327 if (len == BGP_MP_NLRI_MINSIZE)
1328 printf("\n\t End-of-Rib Marker (empty NLRI)");
1329
1330 tptr += 3;
1331
1332 while (len - (tptr - pptr) > 0) {
1333 switch (af<<8 | safi) {
1334 case (AFNUM_INET<<8 | SAFNUM_UNICAST):
1335 case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
1336 case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
1337 advance = decode_prefix4(tptr, buf, sizeof(buf));
1338 if (advance == -1)
1339 printf("\n\t (illegal prefix length)");
1340 else if (advance == -2)
1341 goto trunc;
1342 else
1343 printf("\n\t %s", buf);
1344 break;
1345 case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
1346 advance = decode_labeled_prefix4(tptr, buf, sizeof(buf));
1347 if (advance == -1)
1348 printf("\n\t (illegal prefix length)");
1349 else if (advance == -2)
1350 goto trunc;
1351 else
1352 printf("\n\t %s", buf);
1353 break;
1354 case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
1355 case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
1356 case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
1357 advance = decode_labeled_vpn_prefix4(tptr, buf, sizeof(buf));
1358 if (advance == -1)
1359 printf("\n\t (illegal prefix length)");
1360 else if (advance == -2)
1361 goto trunc;
1362 else
1363 printf("\n\t %s", buf);
1364 break;
1365#ifdef INET6
1366 case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
1367 case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
1368 case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
1369 advance = decode_prefix6(tptr, buf, sizeof(buf));
1370 if (advance == -1)
1371 printf("\n\t (illegal prefix length)");
1372 else if (advance == -2)
1373 goto trunc;
1374 else
1375 printf("\n\t %s", buf);
1376 break;
1377 case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
1378 advance = decode_labeled_prefix6(tptr, buf, sizeof(buf));
1379 if (advance == -1)
1380 printf("\n\t (illegal prefix length)");
1381 else if (advance == -2)
1382 goto trunc;
1383 else
1384 printf("\n\t %s", buf);
1385 break;
1386 case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
1387 case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
1388 case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
1389 advance = decode_labeled_vpn_prefix6(tptr, buf, sizeof(buf));
1390 if (advance == -1)
1391 printf("\n\t (illegal prefix length)");
1392 else if (advance == -2)
1393 goto trunc;
1394 else
1395 printf("\n\t %s", buf);
1396 break;
1397#endif
1398 case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST):
1399 case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
1400 case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
1401 advance = decode_labeled_vpn_l2(tptr, buf, sizeof(buf));
1402 if (advance == -1)
1403 printf("\n\t (illegal length)");
1404 else if (advance == -2)
1405 goto trunc;
1406 else
1407 printf("\n\t %s", buf);
1408 break;
1409 case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
1410 case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
1411 case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):
1412 advance = decode_labeled_clnp_prefix(tptr, buf, sizeof(buf));
1413 if (advance == -1)
1414 printf("\n\t (illegal prefix length)");
1415 else if (advance == -2)
1416 goto trunc;
1417 else
1418 printf("\n\t %s", buf);
1419 break;
1420 case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST):
1421 case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
1422 case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):
1423 advance = decode_labeled_vpn_clnp_prefix(tptr, buf, sizeof(buf));
1424 if (advance == -1)
1425 printf("\n\t (illegal prefix length)");
1426 else if (advance == -2)
1427 goto trunc;
1428 else
1429 printf("\n\t %s", buf);
1430 break;
1431 default:
1432 TCHECK2(*(tptr-3),tlen);
1433 printf("no AFI %u / SAFI %u decoder",af,safi);
1434 if (vflag <= 1)
1435 print_unknown_data(tptr-3,"\n\t ",tlen);
1436 advance = 0;
1437 tptr = pptr + len;
1438 break;
1439 }
1440 break;
1441 tptr += advance;
1442 }
1443 break;
1444 case BGPTYPE_EXTD_COMMUNITIES:
1445 if (len % 8) {
1446 printf("invalid len");
1447 break;
1448 }
1449 while (tlen>0) {
1450 u_int16_t extd_comm;
1451
1452 TCHECK2(tptr[0], 2);
1453 extd_comm=EXTRACT_16BITS(tptr);
1454
1455 printf("\n\t %s (0x%04x), Flags [%s]",
1456 tok2strbuf(bgp_extd_comm_subtype_values,
1457 "unknown extd community typecode",
1458 extd_comm, tokbuf, sizeof(tokbuf)),
1459 extd_comm,
1460 bittok2str(bgp_extd_comm_flag_values, "none", extd_comm));
1461
1462 TCHECK2(*(tptr+2), 6);
1463 switch(extd_comm) {
1464 case BGP_EXT_COM_RT_0:
1465 case BGP_EXT_COM_RO_0:
1466 printf(": %u:%s",
--- 12 unchanged lines hidden (view full) ---
1479 EXTRACT_32BITS(tptr+2),
1480 EXTRACT_16BITS(tptr+6));
1481 break;
1482 case BGP_EXT_COM_LINKBAND:
1483 bw.i = EXTRACT_32BITS(tptr+2);
1484 printf(": bandwidth: %.3f Mbps",
1485 bw.f*8/1000000);
1486 break;
1487 case BGP_EXT_COM_CISCO_MCAST:
1488 printf(": AS %u, group %s",
1489 EXTRACT_16BITS(tptr+2),
1490 getname(tptr+4));
1491 break;
1492 case BGP_EXT_COM_VPN_ORIGIN:
1493 case BGP_EXT_COM_VPN_ORIGIN2:
1494 case BGP_EXT_COM_VPN_ORIGIN3:
1495 case BGP_EXT_COM_VPN_ORIGIN4:
1496 case BGP_EXT_COM_OSPF_RID:
1497 case BGP_EXT_COM_OSPF_RID2:
1498 printf("%s", getname(tptr+2));
1499 break;
1500 case BGP_EXT_COM_OSPF_RTYPE:
1501 case BGP_EXT_COM_OSPF_RTYPE2:
1502 printf(": area:%s, router-type:%s, metric-type:%s%s",
1503 getname(tptr+2),
1504 tok2strbuf(bgp_extd_comm_ospf_rtype_values,
1505 "unknown (0x%02x)",
1506 *(tptr+6),
1507 tokbuf, sizeof(tokbuf)),
1508 (*(tptr+7) & BGP_OSPF_RTYPE_METRIC_TYPE) ? "E2" : "",
1509 (*(tptr+6) == (BGP_OSPF_RTYPE_EXT ||BGP_OSPF_RTYPE_NSSA )) ? "E1" : "");
1510 break;
1511 case BGP_EXT_COM_L2INFO:
1512 printf(": %s Control Flags [0x%02x]:MTU %u",
1513 tok2strbuf(l2vpn_encaps_values,
1514 "unknown encaps",
1515 *(tptr+2),
1516 tokbuf, sizeof(tokbuf)),
1517 *(tptr+3),
1518 EXTRACT_16BITS(tptr+4));
1519 break;
1520 default:
1521 print_unknown_data(tptr,"\n\t ",8);
1522 break;
1523 }
1524 tlen -=8;
1525 tptr +=8;
1526 }
1527 break;
1528
1529 case BGPTYPE_ATTR_SET:
1530 TCHECK2(tptr[0], 4);
1531 printf("\n\t Origin AS: %u", EXTRACT_32BITS(tptr));
1532 tptr+=4;
1533 len -=4;
1534
1535 while (len >= 2 ) {
1536 int alen;
1537 struct bgp_attr bgpa;
1538
1539 TCHECK2(tptr[0], sizeof(bgpa));
1540 memcpy(&bgpa, tptr, sizeof(bgpa));
1541 alen = bgp_attr_len(&bgpa);
1542 tptr += bgp_attr_off(&bgpa);
1543 len -= bgp_attr_off(&bgpa);
1544
1545 printf("\n\t %s (%u), length: %u",
1546 tok2strbuf(bgp_attr_values,
1547 "Unknown Attribute", bgpa.bgpa_type,
1548 tokbuf, sizeof(tokbuf)),
1549 bgpa.bgpa_type,
1550 alen);
1551
1552 if (bgpa.bgpa_flags) {
1553 printf(", Flags [%s%s%s%s",
1554 bgpa.bgpa_flags & 0x80 ? "O" : "",
1555 bgpa.bgpa_flags & 0x40 ? "T" : "",
1556 bgpa.bgpa_flags & 0x20 ? "P" : "",
1557 bgpa.bgpa_flags & 0x10 ? "E" : "");
1558 if (bgpa.bgpa_flags & 0xf)
1559 printf("+%x", bgpa.bgpa_flags & 0xf);
1560 printf("]: ");
1561 }
1562 /* FIXME check for recursion */
1563 if (!bgp_attr_print(&bgpa, tptr, alen))
1564 return 0;
1565 tptr += alen;
1566 len -= alen;
1567 }
1568 break;
1569
1570
1571 default:
1572 TCHECK2(*pptr,len);
1573 printf("\n\t no Attribute %u decoder",attr->bgpa_type); /* we have no decoder for the attribute */
1574 if (vflag <= 1)
1575 print_unknown_data(pptr,"\n\t ",len);
1576 break;
1577 }
1578 if (vflag > 1 && len) /* omit zero length attributes*/
--- 7 unchanged lines hidden (view full) ---
1586static void
1587bgp_open_print(const u_char *dat, int length)
1588{
1589 struct bgp_open bgpo;
1590 struct bgp_opt bgpopt;
1591 int hlen;
1592 const u_char *opt;
1593 int i,cap_type,cap_len,tcap_len,cap_offset;
1594 char tokbuf[TOKBUFSIZE];
1595 char tokbuf2[TOKBUFSIZE];
1596
1597 TCHECK2(dat[0], BGP_OPEN_SIZE);
1598 memcpy(&bgpo, dat, BGP_OPEN_SIZE);
1599 hlen = ntohs(bgpo.bgpo_len);
1600
1601 printf("\n\t Version %d, ", bgpo.bgpo_version);
1602 printf("my AS %u, ", ntohs(bgpo.bgpo_myas));
1603 printf("Holdtime %us, ", ntohs(bgpo.bgpo_holdtime));
--- 13 unchanged lines hidden (view full) ---
1617 TCHECK2(opt[i], BGP_OPT_SIZE);
1618 memcpy(&bgpopt, &opt[i], BGP_OPT_SIZE);
1619 if (i + 2 + bgpopt.bgpopt_len > bgpo.bgpo_optlen) {
1620 printf("\n\t Option %d, length: %u", bgpopt.bgpopt_type, bgpopt.bgpopt_len);
1621 break;
1622 }
1623
1624 printf("\n\t Option %s (%u), length: %u",
1625 tok2strbuf(bgp_opt_values,"Unknown",
1626 bgpopt.bgpopt_type,
1627 tokbuf, sizeof(tokbuf)),
1628 bgpopt.bgpopt_type,
1629 bgpopt.bgpopt_len);
1630
1631 /* now lets decode the options we know*/
1632 switch(bgpopt.bgpopt_type) {
1633 case BGP_OPT_CAP:
1634 cap_type=opt[i+BGP_OPT_SIZE];
1635 cap_len=opt[i+BGP_OPT_SIZE+1];
1636 tcap_len=cap_len;
1637 printf("\n\t %s (%u), length: %u",
1638 tok2strbuf(bgp_capcode_values, "Unknown",
1639 cap_type, tokbuf, sizeof(tokbuf)),
1640 cap_type,
1641 cap_len);
1642 switch(cap_type) {
1643 case BGP_CAPCODE_MP:
1644 printf("\n\t\tAFI %s (%u), SAFI %s (%u)",
1645 tok2strbuf(bgp_afi_values, "Unknown",
1646 EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+2),
1647 tokbuf, sizeof(tokbuf)),
1648 EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+2),
1649 tok2strbuf(bgp_safi_values, "Unknown",
1650 opt[i+BGP_OPT_SIZE+5],
1651 tokbuf, sizeof(tokbuf)),
1652 opt[i+BGP_OPT_SIZE+5]);
1653 break;
1654 case BGP_CAPCODE_RESTART:
1655 printf("\n\t\tRestart Flags: [%s], Restart Time %us",
1656 ((opt[i+BGP_OPT_SIZE+2])&0x80) ? "R" : "none",
1657 EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+2)&0xfff);
1658 tcap_len-=2;
1659 cap_offset=4;
1660 while(tcap_len>=4) {
1661 printf("\n\t\t AFI %s (%u), SAFI %s (%u), Forwarding state preserved: %s",
1662 tok2strbuf(bgp_afi_values,"Unknown",
1663 EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+cap_offset),
1664 tokbuf, sizeof(tokbuf)),
1665 EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+cap_offset),
1666 tok2strbuf(bgp_safi_values,"Unknown",
1667 opt[i+BGP_OPT_SIZE+cap_offset+2],
1668 tokbuf2, sizeof(tokbuf2)),
1669 opt[i+BGP_OPT_SIZE+cap_offset+2],
1670 ((opt[i+BGP_OPT_SIZE+cap_offset+3])&0x80) ? "yes" : "no" );
1671 tcap_len-=4;
1672 cap_offset+=4;
1673 }
1674 break;
1675 case BGP_CAPCODE_RR:
1676 case BGP_CAPCODE_RR_CISCO:
--- 26 unchanged lines hidden (view full) ---
1703bgp_update_print(const u_char *dat, int length)
1704{
1705 struct bgp bgp;
1706 struct bgp_attr bgpa;
1707 int hlen;
1708 const u_char *p;
1709 int len;
1710 int i;
1711 char tokbuf[TOKBUFSIZE];
1712
1713 TCHECK2(dat[0], BGP_SIZE);
1714 memcpy(&bgp, dat, BGP_SIZE);
1715 hlen = ntohs(bgp.bgp_len);
1716 p = dat + BGP_SIZE; /*XXX*/
1717
1718 /* Unfeasible routes */
1719 len = EXTRACT_16BITS(p);
--- 27 unchanged lines hidden (view full) ---
1747 }
1748 }
1749#endif
1750 }
1751 p += 2 + len;
1752
1753 TCHECK2(p[0], 2);
1754 len = EXTRACT_16BITS(p);
1755
1756 if (len == 0 && length == BGP_UPDATE_MINSIZE) {
1757 printf("\n\t End-of-Rib Marker (empty NLRI)");
1758 return;
1759 }
1760
1761 if (len) {
1762 /* do something more useful!*/
1763 i = 2;
1764 while (i < 2 + len) {
1765 int alen, aoff;
1766
1767 TCHECK2(p[i], sizeof(bgpa));
1768 memcpy(&bgpa, &p[i], sizeof(bgpa));
1769 alen = bgp_attr_len(&bgpa);
1770 aoff = bgp_attr_off(&bgpa);
1771
1772 printf("\n\t %s (%u), length: %u",
1773 tok2strbuf(bgp_attr_values, "Unknown Attribute",
1774 bgpa.bgpa_type,
1775 tokbuf, sizeof(tokbuf)),
1776 bgpa.bgpa_type,
1777 alen);
1778
1779 if (bgpa.bgpa_flags) {
1780 printf(", Flags [%s%s%s%s",
1781 bgpa.bgpa_flags & 0x80 ? "O" : "",
1782 bgpa.bgpa_flags & 0x40 ? "T" : "",
1783 bgpa.bgpa_flags & 0x20 ? "P" : "",
1784 bgpa.bgpa_flags & 0x10 ? "E" : "");
1785 if (bgpa.bgpa_flags & 0xf)
1786 printf("+%x", bgpa.bgpa_flags & 0xf);
1787 printf("]: ");
1788 }
1789 if (!bgp_attr_print(&bgpa, &p[i + aoff], alen))
1790 goto trunc;
1791 i += aoff + alen;
1792 }
1793 }
1794 p += 2 + len;
1795
1796 if (dat + length > p) {
1797 printf("\n\t Updated routes:");
1798 while (dat + length > p) {
1799 char buf[MAXHOSTNAMELEN + 100];
1800 i = decode_prefix4(p, buf, sizeof(buf));
1801 if (i == -1)
--- 12 unchanged lines hidden (view full) ---
1814}
1815
1816static void
1817bgp_notification_print(const u_char *dat, int length)
1818{
1819 struct bgp_notification bgpn;
1820 int hlen;
1821 const u_char *tptr;
1822 char tokbuf[TOKBUFSIZE];
1823 char tokbuf2[TOKBUFSIZE];
1824
1825 TCHECK2(dat[0], BGP_NOTIFICATION_SIZE);
1826 memcpy(&bgpn, dat, BGP_NOTIFICATION_SIZE);
1827 hlen = ntohs(bgpn.bgpn_len);
1828
1829 /* some little sanity checking */
1830 if (length<BGP_NOTIFICATION_SIZE)
1831 return;
1832
1833 printf(", %s (%u)",
1834 tok2strbuf(bgp_notify_major_values, "Unknown Error",
1835 bgpn.bgpn_major, tokbuf, sizeof(tokbuf)),
1836 bgpn.bgpn_major);
1837
1838 switch (bgpn.bgpn_major) {
1839
1840 case BGP_NOTIFY_MAJOR_MSG:
1841 printf(", subcode %s (%u)",
1842 tok2strbuf(bgp_notify_minor_msg_values, "Unknown",
1843 bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
1844 bgpn.bgpn_minor);
1845 break;
1846 case BGP_NOTIFY_MAJOR_OPEN:
1847 printf(", subcode %s (%u)",
1848 tok2strbuf(bgp_notify_minor_open_values, "Unknown",
1849 bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
1850 bgpn.bgpn_minor);
1851 break;
1852 case BGP_NOTIFY_MAJOR_UPDATE:
1853 printf(", subcode %s (%u)",
1854 tok2strbuf(bgp_notify_minor_update_values, "Unknown",
1855 bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
1856 bgpn.bgpn_minor);
1857 break;
1858 case BGP_NOTIFY_MAJOR_CAP:
1859 printf(" subcode %s (%u)",
1860 tok2strbuf(bgp_notify_minor_cap_values, "Unknown",
1861 bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
1862 bgpn.bgpn_minor);
1863 case BGP_NOTIFY_MAJOR_CEASE:
1864 printf(", subcode %s (%u)",
1865 tok2strbuf(bgp_notify_minor_cease_values, "Unknown",
1866 bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
1867 bgpn.bgpn_minor);
1868
1869 /* draft-ietf-idr-cease-subcode-02 mentions optionally 7 bytes
1870 * for the maxprefix subtype, which may contain AFI, SAFI and MAXPREFIXES
1871 */
1872 if(bgpn.bgpn_minor == BGP_NOTIFY_MINOR_CEASE_MAXPRFX && length >= BGP_NOTIFICATION_SIZE + 7) {
1873 tptr = dat + BGP_NOTIFICATION_SIZE;
1874 TCHECK2(*tptr, 7);
1875 printf(", AFI %s (%u), SAFI %s (%u), Max Prefixes: %u",
1876 tok2strbuf(bgp_afi_values, "Unknown",
1877 EXTRACT_16BITS(tptr), tokbuf, sizeof(tokbuf)),
1878 EXTRACT_16BITS(tptr),
1879 tok2strbuf(bgp_safi_values, "Unknown", *(tptr+2),
1880 tokbuf2, sizeof(tokbuf)),
1881 *(tptr+2),
1882 EXTRACT_32BITS(tptr+3));
1883 }
1884 break;
1885 default:
1886 break;
1887 }
1888
1889 return;
1890trunc:
1891 printf("[|BGP]");
1892}
1893
1894static void
1895bgp_route_refresh_print(const u_char *pptr, int len) {
1896
1897 const struct bgp_route_refresh *bgp_route_refresh_header;
1898 char tokbuf[TOKBUFSIZE];
1899 char tokbuf2[TOKBUFSIZE];
1900
1901 bgp_route_refresh_header = (const struct bgp_route_refresh *)pptr;
1902
1903 printf("\n\t AFI %s (%u), SAFI %s (%u)",
1904 tok2strbuf(bgp_afi_values,"Unknown",
1905 /* this stinks but the compiler pads the structure
1906 * weird */
1907 EXTRACT_16BITS(&bgp_route_refresh_header->afi),
1908 tokbuf, sizeof(tokbuf)),
1909 EXTRACT_16BITS(&bgp_route_refresh_header->afi),
1910 tok2strbuf(bgp_safi_values,"Unknown",
1911 bgp_route_refresh_header->safi,
1912 tokbuf2, sizeof(tokbuf2)),
1913 bgp_route_refresh_header->safi);
1914
1915 if (vflag > 1)
1916 print_unknown_data(pptr,"\n\t ", len);
1917
1918 return;
1919}
1920
1921static int
1922bgp_header_print(const u_char *dat, int length)
1923{
1924 struct bgp bgp;
1925 char tokbuf[TOKBUFSIZE];
1926
1927 TCHECK2(dat[0], BGP_SIZE);
1928 memcpy(&bgp, dat, BGP_SIZE);
1929 printf("\n\t%s Message (%u), length: %u",
1930 tok2strbuf(bgp_msg_values, "Unknown", bgp.bgp_type,
1931 tokbuf, sizeof(tokbuf)),
1932 bgp.bgp_type,
1933 length);
1934
1935 switch (bgp.bgp_type) {
1936 case BGP_OPEN:
1937 bgp_open_print(dat, length);
1938 break;
1939 case BGP_UPDATE:
--- 26 unchanged lines hidden (view full) ---
1966 const u_char *ep;
1967 const u_char *start;
1968 const u_char marker[] = {
1969 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1970 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1971 };
1972 struct bgp bgp;
1973 u_int16_t hlen;
1974 char tokbuf[TOKBUFSIZE];
1975
1976 ep = dat + length;
1977 if (snapend < dat + length)
1978 ep = snapend;
1979
1980 printf(": BGP, length: %u",length);
1981
1982 if (vflag < 1) /* lets be less chatty */
--- 31 unchanged lines hidden (view full) ---
2014 }
2015
2016 if (TTEST2(p[0], hlen)) {
2017 if (!bgp_header_print(p, hlen))
2018 return;
2019 p += hlen;
2020 start = p;
2021 } else {
2022 printf("\n[|BGP %s]",
2023 tok2strbuf(bgp_msg_values,
2024 "Unknown Message Type",
2025 bgp.bgp_type,
2026 tokbuf, sizeof(tokbuf)));
2027 break;
2028 }
2029 }
2030
2031 return;
2032
2033trunc:
2034 printf(" [|BGP]");
2035}