contrib/tcpdump/print-bgp.c

   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
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the project nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * Extensively modified by Hannes Gredler (hannes@juniper.net) for more
  30  * complete BGP support.
  31  */
  32
  33 #ifdef HAVE_CONFIG_H
  34 #include "config.h"
  35 #endif
  36
  37 #ifndef lint
  38 static const char rcsid[] _U_ =
  39      "@(#) $Header: /tcpdump/master/tcpdump/print-bgp.c,v 1.118 2007-12-07 15:54:52 hannes 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 "af.h"
  53 #include "l2vpn.h"
  54
  55 struct bgp {
  56         u_int8_t bgp_marker[16];
  57         u_int16_t bgp_len;
  58         u_int8_t bgp_type;
  59 };
  60 #define BGP_SIZE                19      /* unaligned */
  61
  62 #define BGP_OPEN                1
  63 #define BGP_UPDATE              2
  64 #define BGP_NOTIFICATION        3
  65 #define BGP_KEEPALIVE           4
  66 #define BGP_ROUTE_REFRESH       5
  67
  68 static struct tok bgp_msg_values[] = {
  69     { BGP_OPEN,                 "Open"},
  70     { BGP_UPDATE,               "Update"},
  71     { BGP_NOTIFICATION,         "Notification"},
  72     { BGP_KEEPALIVE,            "Keepalive"},
  73     { BGP_ROUTE_REFRESH,        "Route Refresh"},
  74     { 0, NULL}
  75 };
  76
  77 struct bgp_open {
  78         u_int8_t bgpo_marker[16];
  79         u_int16_t bgpo_len;
  80         u_int8_t bgpo_type;
  81         u_int8_t bgpo_version;
  82         u_int16_t bgpo_myas;
  83         u_int16_t bgpo_holdtime;
  84         u_int32_t bgpo_id;
  85         u_int8_t bgpo_optlen;
  86         /* options should follow */
  87 };
  88 #define BGP_OPEN_SIZE           29      /* unaligned */
  89
  90 struct bgp_opt {
  91         u_int8_t bgpopt_type;
  92         u_int8_t bgpopt_len;
  93         /* variable length */
  94 };
  95 #define BGP_OPT_SIZE            2       /* some compilers may pad to 4 bytes */
  96 #define BGP_CAP_HEADER_SIZE     2       /* some compilers may pad to 4 bytes */
  97
  98 struct 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 */
 106
 107 struct bgp_route_refresh {
 108     u_int8_t  bgp_marker[16];
 109     u_int16_t len;
 110     u_int8_t  type;
 111     u_int8_t  afi[2]; /* the compiler messes this structure up               */
 112     u_int8_t  res;    /* when doing misaligned sequences of int8 and int16   */
 113     u_int8_t  safi;   /* afi should be int16 - so we have to access it using */
 114 };                    /* EXTRACT_16BITS(&bgp_route_refresh->afi) (sigh)      */
 115 #define BGP_ROUTE_REFRESH_SIZE          23
 116
 117 #define bgp_attr_lenlen(flags, p) \
 118         (((flags) & 0x10) ? 2 : 1)
 119 #define bgp_attr_len(flags, p) \
 120         (((flags) & 0x10) ? EXTRACT_16BITS(p) : *(p))
 121
 122 #define BGPTYPE_ORIGIN                  1
 123 #define BGPTYPE_AS_PATH                 2
 124 #define BGPTYPE_NEXT_HOP                3
 125 #define BGPTYPE_MULTI_EXIT_DISC         4
 126 #define BGPTYPE_LOCAL_PREF              5
 127 #define BGPTYPE_ATOMIC_AGGREGATE        6
 128 #define BGPTYPE_AGGREGATOR              7
 129 #define BGPTYPE_COMMUNITIES             8       /* RFC1997 */
 130 #define BGPTYPE_ORIGINATOR_ID           9       /* RFC1998 */
 131 #define BGPTYPE_CLUSTER_LIST            10      /* RFC1998 */
 132 #define BGPTYPE_DPA                     11      /* draft-ietf-idr-bgp-dpa */
 133 #define BGPTYPE_ADVERTISERS             12      /* RFC1863 */
 134 #define BGPTYPE_RCID_PATH               13      /* RFC1863 */
 135 #define BGPTYPE_MP_REACH_NLRI           14      /* RFC2283 */
 136 #define BGPTYPE_MP_UNREACH_NLRI         15      /* RFC2283 */
 137 #define BGPTYPE_EXTD_COMMUNITIES        16      /* draft-ietf-idr-bgp-ext-communities */
 138 #define BGPTYPE_AS4_PATH                17      /* RFC4893 */
 139 #define BGPTYPE_AGGREGATOR4             18      /* RFC4893 */
 140 #define BGPTYPE_PMSI_TUNNEL             22      /* draft-ietf-l3vpn-2547bis-mcast-bgp-02.txt */
 141 #define BGPTYPE_ATTR_SET               128      /* draft-marques-ppvpn-ibgp */
 142
 143 #define BGP_MP_NLRI_MINSIZE              3       /* End of RIB Marker detection */
 144
 145 static struct tok bgp_attr_values[] = {
 146     { BGPTYPE_ORIGIN,           "Origin"},
 147     { BGPTYPE_AS_PATH,          "AS Path"},
 148     { BGPTYPE_AS4_PATH,         "AS4 Path"},
 149     { BGPTYPE_NEXT_HOP,         "Next Hop"},
 150     { BGPTYPE_MULTI_EXIT_DISC,  "Multi Exit Discriminator"},
 151     { BGPTYPE_LOCAL_PREF,       "Local Preference"},
 152     { BGPTYPE_ATOMIC_AGGREGATE, "Atomic Aggregate"},
 153     { BGPTYPE_AGGREGATOR,       "Aggregator"},
 154     { BGPTYPE_AGGREGATOR4,      "Aggregator4"},
 155     { BGPTYPE_COMMUNITIES,      "Community"},
 156     { BGPTYPE_ORIGINATOR_ID,    "Originator ID"},
 157     { BGPTYPE_CLUSTER_LIST,     "Cluster List"},
 158     { BGPTYPE_DPA,              "DPA"},
 159     { BGPTYPE_ADVERTISERS,      "Advertisers"},
 160     { BGPTYPE_RCID_PATH,        "RCID Path / Cluster ID"},
 161     { BGPTYPE_MP_REACH_NLRI,    "Multi-Protocol Reach NLRI"},
 162     { BGPTYPE_MP_UNREACH_NLRI,  "Multi-Protocol Unreach NLRI"},
 163     { BGPTYPE_EXTD_COMMUNITIES, "Extended Community"},
 164     { BGPTYPE_PMSI_TUNNEL,      "PMSI Tunnel"},
 165     { BGPTYPE_ATTR_SET,         "Attribute Set"},
 166     { 255,                      "Reserved for development"},
 167     { 0, NULL}
 168 };
 169
 170 #define BGP_AS_SET             1
 171 #define BGP_AS_SEQUENCE        2
 172 #define BGP_CONFED_AS_SEQUENCE 3 /* draft-ietf-idr-rfc3065bis-01 */
 173 #define BGP_CONFED_AS_SET      4 /* draft-ietf-idr-rfc3065bis-01  */
 174
 175 #define BGP_AS_SEG_TYPE_MIN    BGP_AS_SET
 176 #define BGP_AS_SEG_TYPE_MAX    BGP_CONFED_AS_SET
 177
 178 static struct tok bgp_as_path_segment_open_values[] = {
 179     { BGP_AS_SEQUENCE,         ""},
 180     { BGP_AS_SET,              "{ "},
 181     { BGP_CONFED_AS_SEQUENCE,  "( "},
 182     { BGP_CONFED_AS_SET,       "({ "},
 183     { 0, NULL}
 184 };
 185
 186 static struct tok bgp_as_path_segment_close_values[] = {
 187     { BGP_AS_SEQUENCE,         ""},
 188     { BGP_AS_SET,              "}"},
 189     { BGP_CONFED_AS_SEQUENCE,  ")"},
 190     { BGP_CONFED_AS_SET,       "})"},
 191     { 0, NULL}
 192 };
 193
 194 #define BGP_OPT_AUTH                    1
 195 #define BGP_OPT_CAP                     2
 196
 197
 198 static 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
 212 static 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
 227 #define BGP_NOTIFY_MAJOR_FSM            5
 228 #define BGP_NOTIFY_MAJOR_CEASE          6
 229 #define BGP_NOTIFY_MAJOR_CAP            7
 230
 231 static struct tok bgp_notify_major_values[] = {
 232     { BGP_NOTIFY_MAJOR_MSG,     "Message Header Error"},
 233     { BGP_NOTIFY_MAJOR_OPEN,    "OPEN Message Error"},
 234     { BGP_NOTIFY_MAJOR_UPDATE,  "UPDATE Message Error"},
 235     { BGP_NOTIFY_MAJOR_HOLDTIME,"Hold Timer Expired"},
 236     { BGP_NOTIFY_MAJOR_FSM,     "Finite State Machine Error"},
 237     { BGP_NOTIFY_MAJOR_CEASE,   "Cease"},
 238     { BGP_NOTIFY_MAJOR_CAP,     "Capability Message Error"},
 239     { 0, NULL}
 240 };
 241
 242 /* draft-ietf-idr-cease-subcode-02 */
 243 #define BGP_NOTIFY_MINOR_CEASE_MAXPRFX  1
 244 static struct tok bgp_notify_minor_cease_values[] = {
 245     { BGP_NOTIFY_MINOR_CEASE_MAXPRFX, "Maximum Number of Prefixes Reached"},
 246     { 2,                        "Administratively Shutdown"},
 247     { 3,                        "Peer Unconfigured"},
 248     { 4,                        "Administratively Reset"},
 249     { 5,                        "Connection Rejected"},
 250     { 6,                        "Other Configuration Change"},
 251     { 7,                        "Connection Collision Resolution"},
 252     { 0, NULL}
 253 };
 254
 255 static struct tok bgp_notify_minor_msg_values[] = {
 256     { 1,                        "Connection Not Synchronized"},
 257     { 2,                        "Bad Message Length"},
 258     { 3,                        "Bad Message Type"},
 259     { 0, NULL}
 260 };
 261
 262 static struct tok bgp_notify_minor_open_values[] = {
 263     { 1,                        "Unsupported Version Number"},
 264     { 2,                        "Bad Peer AS"},
 265     { 3,                        "Bad BGP Identifier"},
 266     { 4,                        "Unsupported Optional Parameter"},
 267     { 5,                        "Authentication Failure"},
 268     { 6,                        "Unacceptable Hold Time"},
 269     { 7,                        "Capability Message Error"},
 270     { 0, NULL}
 271 };
 272
 273 static struct tok bgp_notify_minor_update_values[] = {
 274     { 1,                        "Malformed Attribute List"},
 275     { 2,                        "Unrecognized Well-known Attribute"},
 276     { 3,                        "Missing Well-known Attribute"},
 277     { 4,                        "Attribute Flags Error"},
 278     { 5,                        "Attribute Length Error"},
 279     { 6,                        "Invalid ORIGIN Attribute"},
 280     { 7,                        "AS Routing Loop"},
 281     { 8,                        "Invalid NEXT_HOP Attribute"},
 282     { 9,                        "Optional Attribute Error"},
 283     { 10,                       "Invalid Network Field"},
 284     { 11,                       "Malformed AS_PATH"},
 285     { 0, NULL}
 286 };
 287
 288 static struct tok bgp_notify_minor_cap_values[] = {
 289     { 1,                        "Invalid Action Value" },
 290     { 2,                        "Invalid Capability Length" },
 291     { 3,                        "Malformed Capability Value" },
 292     { 4,                        "Unsupported Capability Code" },
 293     { 0, NULL }
 294 };
 295
 296 static struct tok bgp_origin_values[] = {
 297     { 0,                        "IGP"},
 298     { 1,                        "EGP"},
 299     { 2,                        "Incomplete"},
 300     { 0, NULL}
 301 };
 302
 303 #define BGP_PMSI_TUNNEL_RSVP_P2MP 1
 304 #define BGP_PMSI_TUNNEL_LDP_P2MP  2
 305 #define BGP_PMSI_TUNNEL_PIM_SSM   3
 306 #define BGP_PMSI_TUNNEL_PIM_SM    4
 307 #define BGP_PMSI_TUNNEL_PIM_BIDIR 5
 308 #define BGP_PMSI_TUNNEL_INGRESS   6
 309 #define BGP_PMSI_TUNNEL_LDP_MP2MP 7
 310
 311 static struct tok bgp_pmsi_tunnel_values[] = {
 312     { BGP_PMSI_TUNNEL_RSVP_P2MP, "RSVP-TE P2MP LSP"},
 313     { BGP_PMSI_TUNNEL_LDP_P2MP, "LDP P2MP LSP"},
 314     { BGP_PMSI_TUNNEL_PIM_SSM, "PIM-SSM Tree"},
 315     { BGP_PMSI_TUNNEL_PIM_SM, "PIM-SM Tree"},
 316     { BGP_PMSI_TUNNEL_PIM_BIDIR, "PIM-Bidir Tree"},
 317     { BGP_PMSI_TUNNEL_INGRESS, "Ingress Replication"},
 318     { BGP_PMSI_TUNNEL_LDP_MP2MP, "LDP MP2MP LSP"},
 319     { 0, NULL}
 320 };
 321
 322 static struct tok bgp_pmsi_flag_values[] = {
 323     { 0x01, "Leaf Information required"},
 324     { 0, NULL}
 325 };
 326
 327
 328 /* Subsequent address family identifier, RFC2283 section 7 */
 329 #define SAFNUM_RES                      0
 330 #define SAFNUM_UNICAST                  1
 331 #define SAFNUM_MULTICAST                2
 332 #define SAFNUM_UNIMULTICAST             3
 333 /* labeled BGP RFC3107 */
 334 #define SAFNUM_LABUNICAST               4
 335 /* draft-ietf-l3vpn-2547bis-mcast-bgp-02.txt */
 336 #define SAFNUM_MULTICAST_VPN            5
 337 #define SAFNUM_TUNNEL                   64 /* XXX */
 338 #define SAFNUM_VPLS                     65 /* XXX */
 339 /* draft-nalawade-idr-mdt-safi-03 */
 340 #define SAFNUM_MDT                      66
 341 /* Section 4.3.4 of draft-rosen-rfc2547bis-03.txt  */
 342 #define SAFNUM_VPNUNICAST               128
 343 #define SAFNUM_VPNMULTICAST             129
 344 #define SAFNUM_VPNUNIMULTICAST          130
 345 /* draft-marques-ppvpn-rt-constrain-01.txt */
 346 #define SAFNUM_RT_ROUTING_INFO          132
 347
 348 #define BGP_VPN_RD_LEN                  8
 349
 350 static struct tok bgp_safi_values[] = {
 351     { SAFNUM_RES,               "Reserved"},
 352     { SAFNUM_UNICAST,           "Unicast"},
 353     { SAFNUM_MULTICAST,         "Multicast"},
 354     { SAFNUM_UNIMULTICAST,      "Unicast+Multicast"},
 355     { SAFNUM_LABUNICAST,        "labeled Unicast"},
 356     { SAFNUM_TUNNEL,            "Tunnel"},
 357     { SAFNUM_VPLS,              "VPLS"},
 358     { SAFNUM_MDT,               "MDT"},
 359     { SAFNUM_VPNUNICAST,        "labeled VPN Unicast"},
 360     { SAFNUM_VPNMULTICAST,      "labeled VPN Multicast"},
 361     { SAFNUM_VPNUNIMULTICAST,   "labeled VPN Unicast+Multicast"},
 362     { SAFNUM_RT_ROUTING_INFO,   "Route Target Routing Information"},
 363     { SAFNUM_MULTICAST_VPN,     "Multicast VPN"},
 364     { 0, NULL }
 365 };
 366
 367 /* well-known community */
 368 #define BGP_COMMUNITY_NO_EXPORT                 0xffffff01
 369 #define BGP_COMMUNITY_NO_ADVERT                 0xffffff02
 370 #define BGP_COMMUNITY_NO_EXPORT_SUBCONFED       0xffffff03
 371
 372 /* Extended community type - draft-ietf-idr-bgp-ext-communities-05 */
 373 #define BGP_EXT_COM_RT_0        0x0002  /* Route Target,Format AS(2bytes):AN(4bytes) */
 374 #define BGP_EXT_COM_RT_1        0x0102  /* Route Target,Format IP address:AN(2bytes) */
 375 #define BGP_EXT_COM_RT_2        0x0202  /* Route Target,Format AN(4bytes):local(2bytes) */
 376 #define BGP_EXT_COM_RO_0        0x0003  /* Route Origin,Format AS(2bytes):AN(4bytes) */
 377 #define BGP_EXT_COM_RO_1        0x0103  /* Route Origin,Format IP address:AN(2bytes) */
 378 #define BGP_EXT_COM_RO_2        0x0203  /* Route Origin,Format AN(4bytes):local(2bytes) */
 379 #define BGP_EXT_COM_LINKBAND    0x4004  /* Link Bandwidth,Format AS(2B):Bandwidth(4B) */
 380                                         /* rfc2547 bgp-mpls-vpns */
 381 #define BGP_EXT_COM_VPN_ORIGIN  0x0005  /* OSPF Domain ID / VPN of Origin  - draft-rosen-vpns-ospf-bgp-mpls */
 382 #define BGP_EXT_COM_VPN_ORIGIN2 0x0105  /* duplicate - keep for backwards compatability */
 383 #define BGP_EXT_COM_VPN_ORIGIN3 0x0205  /* duplicate - keep for backwards compatability */
 384 #define BGP_EXT_COM_VPN_ORIGIN4 0x8005  /* duplicate - keep for backwards compatability */
 385
 386 #define BGP_EXT_COM_OSPF_RTYPE  0x0306  /* OSPF Route Type,Format Area(4B):RouteType(1B):Options(1B) */
 387 #define BGP_EXT_COM_OSPF_RTYPE2 0x8000  /* duplicate - keep for backwards compatability */
 388
 389 #define BGP_EXT_COM_OSPF_RID    0x0107  /* OSPF Router ID,Format RouterID(4B):Unused(2B) */
 390 #define BGP_EXT_COM_OSPF_RID2   0x8001  /* duplicate - keep for backwards compatability */
 391
 392 #define BGP_EXT_COM_L2INFO      0x800a  /* draft-kompella-ppvpn-l2vpn */
 393
 394 #define BGP_EXT_COM_SOURCE_AS   0x0009  /* RFC-ietf-l3vpn-2547bis-mcast-bgp-08.txt */
 395 #define BGP_EXT_COM_VRF_RT_IMP  0x010b  /* RFC-ietf-l3vpn-2547bis-mcast-bgp-08.txt */
 396 #define BGP_EXT_COM_L2VPN_RT_0  0x000a  /* L2VPN Identifier,Format AS(2bytes):AN(4bytes) */
 397 #define BGP_EXT_COM_L2VPN_RT_1  0xF10a  /* L2VPN Identifier,Format IP address:AN(2bytes) */
 398
 399
 400 /* http://www.cisco.com/en/US/tech/tk436/tk428/technologies_tech_note09186a00801eb09a.shtml  */
 401 #define BGP_EXT_COM_EIGRP_GEN   0x8800
 402 #define BGP_EXT_COM_EIGRP_METRIC_AS_DELAY  0x8801
 403 #define BGP_EXT_COM_EIGRP_METRIC_REL_NH_BW 0x8802
 404 #define BGP_EXT_COM_EIGRP_METRIC_LOAD_MTU  0x8803
 405 #define BGP_EXT_COM_EIGRP_EXT_REMAS_REMID  0x8804
 406 #define BGP_EXT_COM_EIGRP_EXT_REMPROTO_REMMETRIC 0x8805
 407
 408 static struct tok bgp_extd_comm_flag_values[] = {
 409     { 0x8000,                  "vendor-specific"},
 410     { 0x4000,                  "non-transitive"},
 411     { 0, NULL},
 412 };
 413
 414 static struct tok bgp_extd_comm_subtype_values[] = {
 415     { BGP_EXT_COM_RT_0,        "target"},
 416     { BGP_EXT_COM_RT_1,        "target"},
 417     { BGP_EXT_COM_RT_2,        "target"},
 418     { BGP_EXT_COM_RO_0,        "origin"},
 419     { BGP_EXT_COM_RO_1,        "origin"},
 420     { BGP_EXT_COM_RO_2,        "origin"},
 421     { BGP_EXT_COM_LINKBAND,    "link-BW"},
 422     { BGP_EXT_COM_VPN_ORIGIN,  "ospf-domain"},
 423     { BGP_EXT_COM_VPN_ORIGIN2, "ospf-domain"},
 424     { BGP_EXT_COM_VPN_ORIGIN3, "ospf-domain"},
 425     { BGP_EXT_COM_VPN_ORIGIN4, "ospf-domain"},
 426     { BGP_EXT_COM_OSPF_RTYPE,  "ospf-route-type"},
 427     { BGP_EXT_COM_OSPF_RTYPE2, "ospf-route-type"},
 428     { BGP_EXT_COM_OSPF_RID,    "ospf-router-id"},
 429     { BGP_EXT_COM_OSPF_RID2,   "ospf-router-id"},
 430     { BGP_EXT_COM_L2INFO,      "layer2-info"},
 431     { BGP_EXT_COM_EIGRP_GEN , "eigrp-general-route (flag, tag)" },
 432     { BGP_EXT_COM_EIGRP_METRIC_AS_DELAY , "eigrp-route-metric (AS, delay)" },
 433     { BGP_EXT_COM_EIGRP_METRIC_REL_NH_BW , "eigrp-route-metric (reliability, nexthop, bandwidth)" },
 434     { BGP_EXT_COM_EIGRP_METRIC_LOAD_MTU , "eigrp-route-metric (load, MTU)" },
 435     { BGP_EXT_COM_EIGRP_EXT_REMAS_REMID , "eigrp-external-route (remote-AS, remote-ID)" },
 436     { BGP_EXT_COM_EIGRP_EXT_REMPROTO_REMMETRIC , "eigrp-external-route (remote-proto, remote-metric)" },
 437     { BGP_EXT_COM_SOURCE_AS, "source-AS" },
 438     { BGP_EXT_COM_VRF_RT_IMP, "vrf-route-import"},
 439     { BGP_EXT_COM_L2VPN_RT_0, "l2vpn-id"},
 440     { BGP_EXT_COM_L2VPN_RT_1, "l2vpn-id"},
 441     { 0, NULL},
 442 };
 443
 444 /* OSPF codes for  BGP_EXT_COM_OSPF_RTYPE draft-rosen-vpns-ospf-bgp-mpls  */
 445 #define BGP_OSPF_RTYPE_RTR      1 /* OSPF Router LSA */
 446 #define BGP_OSPF_RTYPE_NET      2 /* OSPF Network LSA */
 447 #define BGP_OSPF_RTYPE_SUM      3 /* OSPF Summary LSA */
 448 #define BGP_OSPF_RTYPE_EXT      5 /* OSPF External LSA, note that ASBR doesn't apply to MPLS-VPN */
 449 #define BGP_OSPF_RTYPE_NSSA     7 /* OSPF NSSA External*/
 450 #define BGP_OSPF_RTYPE_SHAM     129 /* OSPF-MPLS-VPN Sham link */
 451 #define BGP_OSPF_RTYPE_METRIC_TYPE 0x1 /* LSB of RTYPE Options Field */
 452
 453 static struct tok bgp_extd_comm_ospf_rtype_values[] = {
 454   { BGP_OSPF_RTYPE_RTR, "Router" },
 455   { BGP_OSPF_RTYPE_NET, "Network" },
 456   { BGP_OSPF_RTYPE_SUM, "Summary" },
 457   { BGP_OSPF_RTYPE_EXT, "External" },
 458   { BGP_OSPF_RTYPE_NSSA,"NSSA External" },
 459   { BGP_OSPF_RTYPE_SHAM,"MPLS-VPN Sham" },
 460   { 0, NULL },
 461 };
 462
 463 #define TOKBUFSIZE 128
 464 static char astostr[20];
 465
 466 /*
 467  * as_printf
 468  *
 469  * Convert an AS number into a string and return string pointer.
 470  *
 471  * Bepending on bflag is set or not, AS number is converted into ASDOT notation
 472  * or plain number notation.
 473  *
 474  */
 475 static char *
 476 as_printf (char *str, int size, u_int asnum)
 477 {
 478         if (!bflag || asnum <= 0xFFFF) {
 479                 snprintf(str, size, "%u", asnum);
 480         } else {
 481                 snprintf(str, size, "%u.%u", asnum >> 16, asnum & 0xFFFF);
 482         }
 483         return str;
 484 }
 485
 486 #define ITEMCHECK(minlen) if (itemlen < minlen) goto badtlv;
 487
 488 int
 489 decode_prefix4(const u_char *pptr, u_int itemlen, char *buf, u_int buflen)
 490 {
 491         struct in_addr addr;
 492         u_int plen, plenbytes;
 493
 494         TCHECK(pptr[0]);
 495         ITEMCHECK(1);
 496         plen = pptr[0];
 497         if (32 < plen)
 498                 return -1;
 499         itemlen -= 1;
 500
 501         memset(&addr, 0, sizeof(addr));
 502         plenbytes = (plen + 7) / 8;
 503         TCHECK2(pptr[1], plenbytes);
 504         ITEMCHECK(plenbytes);
 505         memcpy(&addr, &pptr[1], plenbytes);
 506         if (plen % 8) {
 507                 ((u_char *)&addr)[plenbytes - 1] &=
 508                         ((0xff00 >> (plen % 8)) & 0xff);
 509         }
 510         snprintf(buf, buflen, "%s/%d", getname((u_char *)&addr), plen);
 511         return 1 + plenbytes;
 512
 513 trunc:
 514         return -2;
 515
 516 badtlv:
 517         return -3;
 518 }
 519
 520 static int
 521 decode_labeled_prefix4(const u_char *pptr, u_int itemlen, char *buf, u_int buflen)
 522 {
 523         struct in_addr addr;
 524         u_int plen, plenbytes;
 525
 526         /* prefix length and label = 4 bytes */
 527         TCHECK2(pptr[0], 4);
 528         ITEMCHECK(4);
 529         plen = pptr[0];   /* get prefix length */
 530
 531         /* this is one of the weirdnesses of rfc3107
 532            the label length (actually the label + COS bits)
 533            is added to the prefix length;
 534            we also do only read out just one label -
 535            there is no real application for advertisement of
 536            stacked labels in a a single BGP message
 537         */
 538
 539         if (24 > plen)
 540                 return -1;
 541
 542         plen-=24; /* adjust prefixlen - labellength */
 543
 544         if (32 < plen)
 545                 return -1;
 546         itemlen -= 4;
 547
 548         memset(&addr, 0, sizeof(addr));
 549         plenbytes = (plen + 7) / 8;
 550         TCHECK2(pptr[4], plenbytes);
 551         ITEMCHECK(plenbytes);
 552         memcpy(&addr, &pptr[4], plenbytes);
 553         if (plen % 8) {
 554                 ((u_char *)&addr)[plenbytes - 1] &=
 555                         ((0xff00 >> (plen % 8)) & 0xff);
 556         }
 557         /* the label may get offsetted by 4 bits so lets shift it right */
 558         snprintf(buf, buflen, "%s/%d, label:%u %s",
 559                  getname((u_char *)&addr),
 560                  plen,
 561                  EXTRACT_24BITS(pptr+1)>>4,
 562                  ((pptr[3]&1)==0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
 563
 564         return 4 + plenbytes;
 565
 566 trunc:
 567         return -2;
 568
 569 badtlv:
 570         return -3;
 571 }
 572
 573 /*
 574  * bgp_vpn_ip_print
 575  *
 576  * print an ipv4 or ipv6 address into a buffer dependend on address length.
 577  */
 578 static char *
 579 bgp_vpn_ip_print (const u_char *pptr, u_int addr_length) {
 580
 581     /* worst case string is s fully formatted v6 address */
 582     static char addr[sizeof("1234:5678:89ab:cdef:1234:5678:89ab:cdef")];
 583     char *pos = addr;
 584
 585     switch(addr_length) {
 586     case (sizeof(struct in_addr) << 3): /* 32 */
 587         TCHECK2(pptr[0], sizeof(struct in_addr));
 588         snprintf(pos, sizeof(addr), "%s", ipaddr_string(pptr));
 589         break;
 590 #ifdef INET6
 591     case (sizeof(struct in6_addr) << 3): /* 128 */
 592         TCHECK2(pptr[0], sizeof(struct in6_addr));
 593         snprintf(pos, sizeof(addr), "%s", ip6addr_string(pptr));
 594         break;
 595 #endif
 596     default:
 597         snprintf(pos, sizeof(addr), "bogus address length %u", addr_length);
 598         break;
 599     }
 600     pos += strlen(pos);
 601
 602 trunc:
 603     *(pos) = '\0';
 604     return (addr);
 605 }
 606
 607 /*
 608  * bgp_vpn_sg_print
 609  *
 610  * print an multicast s,g entry into a buffer.
 611  * the s,g entry is encoded like this.
 612  *
 613  * +-----------------------------------+
 614  * | Multicast Source Length (1 octet) |
 615  * +-----------------------------------+
 616  * |   Multicast Source (Variable)     |
 617  * +-----------------------------------+
 618  * |  Multicast Group Length (1 octet) |
 619  * +-----------------------------------+
 620  * |  Multicast Group   (Variable)     |
 621  * +-----------------------------------+
 622  *
 623  * return the number of bytes read from the wire.
 624  */
 625 static int
 626 bgp_vpn_sg_print (const u_char *pptr, char *buf, u_int buflen) {
 627
 628     u_int8_t addr_length;
 629     u_int total_length, offset;
 630
 631     total_length = 0;
 632
 633     /* Source address length, encoded in bits */
 634     TCHECK2(pptr[0], 1);
 635     addr_length =  *pptr++;
 636
 637     /* Source address */
 638     TCHECK2(pptr[0], (addr_length >> 3));
 639     total_length += (addr_length >> 3) + 1;
 640     offset = strlen(buf);
 641     if (addr_length) {
 642         snprintf(buf + offset, buflen - offset, ", Source %s",
 643                  bgp_vpn_ip_print(pptr, addr_length));
 644         pptr += (addr_length >> 3);
 645     }
 646
 647     /* Group address length, encoded in bits */
 648     TCHECK2(pptr[0], 1);
 649     addr_length =  *pptr++;
 650
 651     /* Group address */
 652     TCHECK2(pptr[0], (addr_length >> 3));
 653     total_length += (addr_length >> 3) + 1;
 654     offset = strlen(buf);
 655     if (addr_length) {
 656         snprintf(buf + offset, buflen - offset, ", Group %s",
 657                  bgp_vpn_ip_print(pptr, addr_length));
 658         pptr += (addr_length >> 3);
 659     }
 660
 661 trunc:
 662     return (total_length);
 663 }
 664
 665
 666 /* RDs and RTs share the same semantics
 667  * we use bgp_vpn_rd_print for
 668  * printing route targets inside a NLRI */
 669 char *
 670 bgp_vpn_rd_print (const u_char *pptr) {
 671
 672    /* allocate space for the largest possible string */
 673     static char rd[sizeof("xxxxxxxxxx:xxxxx (xxx.xxx.xxx.xxx:xxxxx)")];
 674     char *pos = rd;
 675
 676     /* ok lets load the RD format */
 677     switch (EXTRACT_16BITS(pptr)) {
 678
 679         /* 2-byte-AS:number fmt*/
 680     case 0:
 681         snprintf(pos, sizeof(rd) - (pos - rd), "%u:%u (= %u.%u.%u.%u)",
 682                  EXTRACT_16BITS(pptr+2),
 683                  EXTRACT_32BITS(pptr+4),
 684                  *(pptr+4), *(pptr+5), *(pptr+6), *(pptr+7));
 685         break;
 686         /* IP-address:AS fmt*/
 687
 688     case 1:
 689         snprintf(pos, sizeof(rd) - (pos - rd), "%u.%u.%u.%u:%u",
 690             *(pptr+2), *(pptr+3), *(pptr+4), *(pptr+5), EXTRACT_16BITS(pptr+6));
 691         break;
 692
 693         /* 4-byte-AS:number fmt*/
 694     case 2:
 695         snprintf(pos, sizeof(rd) - (pos - rd), "%s:%u (%u.%u.%u.%u:%u)",
 696             as_printf(astostr, sizeof(astostr), EXTRACT_32BITS(pptr+2)),
 697             EXTRACT_16BITS(pptr+6), *(pptr+2), *(pptr+3), *(pptr+4),
 698             *(pptr+5), EXTRACT_16BITS(pptr+6));
 699         break;
 700     default:
 701         snprintf(pos, sizeof(rd) - (pos - rd), "unknown RD format");
 702         break;
 703     }
 704     pos += strlen(pos);
 705     *(pos) = '\0';
 706     return (rd);
 707 }
 708
 709 static int
 710 decode_rt_routing_info(const u_char *pptr, char *buf, u_int buflen)
 711 {
 712         u_int8_t route_target[8];
 713         u_int plen;
 714
 715         TCHECK(pptr[0]);
 716         plen = pptr[0];   /* get prefix length */
 717
 718         if (0 == plen)
 719                 return 1; /* default route target */
 720
 721         if (32 > plen)
 722                 return -1;
 723
 724         plen-=32; /* adjust prefix length */
 725
 726         if (64 < plen)
 727                 return -1;
 728
 729         memset(&route_target, 0, sizeof(route_target));
 730         TCHECK2(pptr[1], (plen + 7) / 8);
 731         memcpy(&route_target, &pptr[1], (plen + 7) / 8);
 732         if (plen % 8) {
 733                 ((u_char *)&route_target)[(plen + 7) / 8 - 1] &=
 734                         ((0xff00 >> (plen % 8)) & 0xff);
 735         }
 736         snprintf(buf, buflen, "origin AS: %s, route target %s",
 737             as_printf(astostr, sizeof(astostr), EXTRACT_32BITS(pptr+1)),
 738             bgp_vpn_rd_print((u_char *)&route_target));
 739
 740         return 5 + (plen + 7) / 8;
 741
 742 trunc:
 743         return -2;
 744 }
 745
 746 static int
 747 decode_labeled_vpn_prefix4(const u_char *pptr, char *buf, u_int buflen)
 748 {
 749         struct in_addr addr;
 750         u_int plen;
 751
 752         TCHECK(pptr[0]);
 753         plen = pptr[0];   /* get prefix length */
 754
 755         if ((24+64) > plen)
 756                 return -1;
 757
 758         plen-=(24+64); /* adjust prefixlen - labellength - RD len*/
 759
 760         if (32 < plen)
 761                 return -1;
 762
 763         memset(&addr, 0, sizeof(addr));
 764         TCHECK2(pptr[12], (plen + 7) / 8);
 765         memcpy(&addr, &pptr[12], (plen + 7) / 8);
 766         if (plen % 8) {
 767                 ((u_char *)&addr)[(plen + 7) / 8 - 1] &=
 768                         ((0xff00 >> (plen % 8)) & 0xff);
 769         }
 770         /* the label may get offsetted by 4 bits so lets shift it right */
 771         snprintf(buf, buflen, "RD: %s, %s/%d, label:%u %s",
 772                  bgp_vpn_rd_print(pptr+4),
 773                  getname((u_char *)&addr),
 774                  plen,
 775                  EXTRACT_24BITS(pptr+1)>>4,
 776                  ((pptr[3]&1)==0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
 777
 778         return 12 + (plen + 7) / 8;
 779
 780 trunc:
 781         return -2;
 782 }
 783
 784 /*
 785  * +-------------------------------+
 786  * |                               |
 787  * |  RD:IPv4-address (12 octets)  |
 788  * |                               |
 789  * +-------------------------------+
 790  * |  MDT Group-address (4 octets) |
 791  * +-------------------------------+
 792  */
 793
 794 #define MDT_VPN_NLRI_LEN 16
 795
 796 static int
 797 decode_mdt_vpn_nlri(const u_char *pptr, char *buf, u_int buflen)
 798 {
 799
 800     const u_char *rd;
 801     const u_char *vpn_ip;
 802
 803     TCHECK(pptr[0]);
 804
 805     /* if the NLRI is not predefined length, quit.*/
 806     if (*pptr != MDT_VPN_NLRI_LEN * NBBY)
 807         return -1;
 808     pptr++;
 809
 810     /* RD */
 811     TCHECK2(pptr[0], 8);
 812     rd = pptr;
 813     pptr+=8;
 814
 815     /* IPv4 address */
 816     TCHECK2(pptr[0], sizeof(struct in_addr));
 817     vpn_ip = pptr;
 818     pptr+=sizeof(struct in_addr);
 819
 820     /* MDT Group Address */
 821     TCHECK2(pptr[0], sizeof(struct in_addr));
 822
 823     snprintf(buf, buflen, "RD: %s, VPN IP Address: %s, MC Group Address: %s",
 824              bgp_vpn_rd_print(rd), ipaddr_string(vpn_ip), ipaddr_string(pptr));
 825
 826     return MDT_VPN_NLRI_LEN + 1;
 827
 828  trunc:
 829
 830 return -2;
 831 }
 832
 833 #define BGP_MULTICAST_VPN_ROUTE_TYPE_INTRA_AS_I_PMSI   1
 834 #define BGP_MULTICAST_VPN_ROUTE_TYPE_INTER_AS_I_PMSI   2
 835 #define BGP_MULTICAST_VPN_ROUTE_TYPE_S_PMSI            3
 836 #define BGP_MULTICAST_VPN_ROUTE_TYPE_INTRA_AS_SEG_LEAF 4
 837 #define BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_ACTIVE     5
 838 #define BGP_MULTICAST_VPN_ROUTE_TYPE_SHARED_TREE_JOIN  6
 839 #define BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_TREE_JOIN  7
 840
 841 static struct tok bgp_multicast_vpn_route_type_values[] = {
 842     { BGP_MULTICAST_VPN_ROUTE_TYPE_INTRA_AS_I_PMSI, "Intra-AS I-PMSI"},
 843     { BGP_MULTICAST_VPN_ROUTE_TYPE_INTER_AS_I_PMSI, "Inter-AS I-PMSI"},
 844     { BGP_MULTICAST_VPN_ROUTE_TYPE_S_PMSI, "S-PMSI"},
 845     { BGP_MULTICAST_VPN_ROUTE_TYPE_INTRA_AS_SEG_LEAF, "Intra-AS Segment-Leaf"},
 846     { BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_ACTIVE, "Source-Active"},
 847     { BGP_MULTICAST_VPN_ROUTE_TYPE_SHARED_TREE_JOIN, "Shared Tree Join"},
 848     { BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_TREE_JOIN, "Source Tree Join"},
 849 };
 850
 851 static int
 852 decode_multicast_vpn(const u_char *pptr, char *buf, u_int buflen)
 853 {
 854         u_int8_t route_type, route_length, addr_length, sg_length;
 855         u_int offset;
 856
 857         TCHECK2(pptr[0], 2);
 858         route_type = *pptr++;
 859         route_length = *pptr++;
 860
 861         snprintf(buf, buflen, "Route-Type: %s (%u), length: %u",
 862                  tok2str(bgp_multicast_vpn_route_type_values,
 863                          "Unknown", route_type),
 864                  route_type, route_length);
 865
 866         switch(route_type) {
 867         case BGP_MULTICAST_VPN_ROUTE_TYPE_INTRA_AS_I_PMSI:
 868             TCHECK2(pptr[0], BGP_VPN_RD_LEN);
 869             offset = strlen(buf);
 870             snprintf(buf + offset, buflen - offset, ", RD: %s, Originator %s",
 871                      bgp_vpn_rd_print(pptr),
 872                      bgp_vpn_ip_print(pptr + BGP_VPN_RD_LEN,
 873                                       (route_length - BGP_VPN_RD_LEN) << 3));
 874             break;
 875         case BGP_MULTICAST_VPN_ROUTE_TYPE_INTER_AS_I_PMSI:
 876             TCHECK2(pptr[0], BGP_VPN_RD_LEN + 4);
 877             offset = strlen(buf);
 878             snprintf(buf + offset, buflen - offset, ", RD: %s, Source-AS %s",
 879                 bgp_vpn_rd_print(pptr),
 880                 as_printf(astostr, sizeof(astostr),
 881                 EXTRACT_32BITS(pptr + BGP_VPN_RD_LEN)));
 882             break;
 883
 884         case BGP_MULTICAST_VPN_ROUTE_TYPE_S_PMSI:
 885             TCHECK2(pptr[0], BGP_VPN_RD_LEN);
 886             offset = strlen(buf);
 887             snprintf(buf + offset, buflen - offset, ", RD: %s",
 888                      bgp_vpn_rd_print(pptr));
 889             pptr += BGP_VPN_RD_LEN;
 890
 891             sg_length = bgp_vpn_sg_print(pptr, buf, buflen);
 892             addr_length =  route_length - sg_length;
 893
 894             TCHECK2(pptr[0], addr_length);
 895             offset = strlen(buf);
 896             snprintf(buf + offset, buflen - offset, ", Originator %s",
 897                      bgp_vpn_ip_print(pptr, addr_length << 3));
 898             break;
 899
 900         case BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_ACTIVE:
 901             TCHECK2(pptr[0], BGP_VPN_RD_LEN);
 902             offset = strlen(buf);
 903             snprintf(buf + offset, buflen - offset, ", RD: %s",
 904                      bgp_vpn_rd_print(pptr));
 905             pptr += BGP_VPN_RD_LEN;
 906
 907             bgp_vpn_sg_print(pptr, buf, buflen);
 908             break;
 909
 910         case BGP_MULTICAST_VPN_ROUTE_TYPE_SHARED_TREE_JOIN: /* fall through */
 911         case BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_TREE_JOIN:
 912             TCHECK2(pptr[0], BGP_VPN_RD_LEN);
 913             offset = strlen(buf);
 914             snprintf(buf + offset, buflen - offset, ", RD: %s, Source-AS %s",
 915                 bgp_vpn_rd_print(pptr),
 916                 as_printf(astostr, sizeof(astostr),
 917                 EXTRACT_32BITS(pptr + BGP_VPN_RD_LEN)));
 918             pptr += BGP_VPN_RD_LEN;
 919
 920             bgp_vpn_sg_print(pptr, buf, buflen);
 921             break;
 922
 923             /*
 924              * no per route-type printing yet.
 925              */
 926         case BGP_MULTICAST_VPN_ROUTE_TYPE_INTRA_AS_SEG_LEAF:
 927         default:
 928             break;
 929         }
 930
 931         return route_length + 2;
 932
 933 trunc:
 934         return -2;
 935 }
 936
 937 /*
 938  * As I remember, some versions of systems have an snprintf() that
 939  * returns -1 if the buffer would have overflowed.  If the return
 940  * value is negative, set buflen to 0, to indicate that we've filled
 941  * the buffer up.
 942  *
 943  * If the return value is greater than buflen, that means that
 944  * the buffer would have overflowed; again, set buflen to 0 in
 945  * that case.
 946  */
 947 #define UPDATE_BUF_BUFLEN(buf, buflen, strlen) \
 948     if (strlen<0) \
 949         buflen=0; \
 950     else if ((u_int)strlen>buflen) \
 951         buflen=0; \
 952     else { \
 953         buflen-=strlen; \
 954         buf+=strlen; \
 955     }
 956
 957 static int
 958 decode_labeled_vpn_l2(const u_char *pptr, char *buf, u_int buflen)
 959 {
 960         int plen,tlen,strlen,tlv_type,tlv_len,ttlv_len;
 961
 962         TCHECK2(pptr[0], 2);
 963         plen=EXTRACT_16BITS(pptr);
 964         tlen=plen;
 965         pptr+=2;
 966         /* Old and new L2VPN NLRI share AFI/SAFI
 967          *   -> Assume a 12 Byte-length NLRI is auto-discovery-only
 968          *      and > 17 as old format. Complain for the middle case
 969          */
 970         if (plen==12) {
 971             /* assume AD-only with RD, BGPNH */
 972             TCHECK2(pptr[0],12);
 973             buf[0]='\0';
 974             strlen=snprintf(buf, buflen, "RD: %s, BGPNH: %s",
 975                             bgp_vpn_rd_print(pptr),
 976                             /* need something like getname() here */
 977                             getname(pptr+8)
 978                             );
 979             UPDATE_BUF_BUFLEN(buf, buflen, strlen);
 980             pptr+=12;
 981             tlen-=12;
 982             return plen;
 983         } else if (plen>17) {
 984             /* assume old format */
 985             /* RD, ID, LBLKOFF, LBLBASE */
 986
 987             TCHECK2(pptr[0],15);
 988             buf[0]='\0';
 989             strlen=snprintf(buf, buflen, "RD: %s, CE-ID: %u, Label-Block Offset: %u, Label Base %u",
 990                             bgp_vpn_rd_print(pptr),
 991                             EXTRACT_16BITS(pptr+8),
 992                             EXTRACT_16BITS(pptr+10),
 993                             EXTRACT_24BITS(pptr+12)>>4); /* the label is offsetted by 4 bits so lets shift it right */
 994             UPDATE_BUF_BUFLEN(buf, buflen, strlen);
 995             pptr+=15;
 996             tlen-=15;
 997
 998             /* ok now the variable part - lets read out TLVs*/
 999             while (tlen>0) {
1000                 if (tlen < 3)
1001                     return -1;
1002                 TCHECK2(pptr[0], 3);
1003                 tlv_type=*pptr++;
1004                 tlv_len=EXTRACT_16BITS(pptr);
1005                 ttlv_len=tlv_len;
1006                 pptr+=2;
1007
1008                 switch(tlv_type) {
1009                 case 1:
1010                     if (buflen!=0) {
1011                         strlen=snprintf(buf,buflen, "\n\t\tcircuit status vector (%u) length: %u: 0x",
1012                                         tlv_type,
1013                                         tlv_len);
1014                         UPDATE_BUF_BUFLEN(buf, buflen, strlen);
1015                     }
1016                     ttlv_len=ttlv_len/8+1; /* how many bytes do we need to read ? */
1017                     while (ttlv_len>0) {
1018                         TCHECK(pptr[0]);
1019                         if (buflen!=0) {
1020                             strlen=snprintf(buf,buflen, "%02x",*pptr++);
1021                             UPDATE_BUF_BUFLEN(buf, buflen, strlen);
1022                         }
1023                         ttlv_len--;
1024                     }
1025                     break;
1026                 default:
1027                     if (buflen!=0) {
1028                         strlen=snprintf(buf,buflen, "\n\t\tunknown TLV #%u, length: %u",
1029                                         tlv_type,
1030                                         tlv_len);
1031                         UPDATE_BUF_BUFLEN(buf, buflen, strlen);
1032                     }
1033                     break;
1034                 }
1035                 tlen-=(tlv_len<<3); /* the tlv-length is expressed in bits so lets shift it right */
1036             }
1037             return plen+2;
1038
1039         } else {
1040             /* complain bitterly ? */
1041             /* fall through */
1042             goto trunc;
1043         }
1044
1045 trunc:
1046         return -2;
1047 }
1048
1049 #ifdef INET6
1050 int
1051 decode_prefix6(const u_char *pd, u_int itemlen, char *buf, u_int buflen)
1052 {
1053         struct in6_addr addr;
1054         u_int plen, plenbytes;
1055
1056         TCHECK(pd[0]);
1057         ITEMCHECK(1);
1058         plen = pd[0];
1059         if (128 < plen)
1060                 return -1;
1061         itemlen -= 1;
1062
1063         memset(&addr, 0, sizeof(addr));
1064         plenbytes = (plen + 7) / 8;
1065         TCHECK2(pd[1], plenbytes);
1066         ITEMCHECK(plenbytes);
1067         memcpy(&addr, &pd[1], plenbytes);
1068         if (plen % 8) {
1069                 addr.s6_addr[plenbytes - 1] &=
1070                         ((0xff00 >> (plen % 8)) & 0xff);
1071         }
1072         snprintf(buf, buflen, "%s/%d", getname6((u_char *)&addr), plen);
1073         return 1 + plenbytes;
1074
1075 trunc:
1076         return -2;
1077
1078 badtlv:
1079         return -3;
1080 }
1081
1082 static int
1083 decode_labeled_prefix6(const u_char *pptr, u_int itemlen, char *buf, u_int buflen)
1084 {
1085         struct in6_addr addr;
1086         u_int plen, plenbytes;
1087
1088         /* prefix length and label = 4 bytes */
1089         TCHECK2(pptr[0], 4);
1090         ITEMCHECK(4);
1091         plen = pptr[0]; /* get prefix length */
1092
1093         if (24 > plen)
1094                 return -1;
1095
1096         plen-=24; /* adjust prefixlen - labellength */
1097
1098         if (128 < plen)
1099                 return -1;
1100         itemlen -= 4;
1101
1102         memset(&addr, 0, sizeof(addr));
1103         plenbytes = (plen + 7) / 8;
1104         TCHECK2(pptr[4], plenbytes);
1105         memcpy(&addr, &pptr[4], plenbytes);
1106         if (plen % 8) {
1107                 addr.s6_addr[plenbytes - 1] &=
1108                         ((0xff00 >> (plen % 8)) & 0xff);
1109         }
1110         /* the label may get offsetted by 4 bits so lets shift it right */
1111         snprintf(buf, buflen, "%s/%d, label:%u %s",
1112                  getname6((u_char *)&addr),
1113                  plen,
1114                  EXTRACT_24BITS(pptr+1)>>4,
1115                  ((pptr[3]&1)==0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
1116
1117         return 4 + plenbytes;
1118
1119 trunc:
1120         return -2;
1121
1122 badtlv:
1123         return -3;
1124 }
1125
1126 static int
1127 decode_labeled_vpn_prefix6(const u_char *pptr, char *buf, u_int buflen)
1128 {
1129         struct in6_addr addr;
1130         u_int plen;
1131
1132         TCHECK(pptr[0]);
1133         plen = pptr[0];   /* get prefix length */
1134
1135         if ((24+64) > plen)
1136                 return -1;
1137
1138         plen-=(24+64); /* adjust prefixlen - labellength - RD len*/
1139
1140         if (128 < plen)
1141                 return -1;
1142
1143         memset(&addr, 0, sizeof(addr));
1144         TCHECK2(pptr[12], (plen + 7) / 8);
1145         memcpy(&addr, &pptr[12], (plen + 7) / 8);
1146         if (plen % 8) {
1147                 addr.s6_addr[(plen + 7) / 8 - 1] &=
1148                         ((0xff00 >> (plen % 8)) & 0xff);
1149         }
1150         /* the label may get offsetted by 4 bits so lets shift it right */
1151         snprintf(buf, buflen, "RD: %s, %s/%d, label:%u %s",
1152                  bgp_vpn_rd_print(pptr+4),
1153                  getname6((u_char *)&addr),
1154                  plen,
1155                  EXTRACT_24BITS(pptr+1)>>4,
1156                  ((pptr[3]&1)==0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
1157
1158         return 12 + (plen + 7) / 8;
1159
1160 trunc:
1161         return -2;
1162 }
1163 #endif
1164
1165 static int
1166 decode_clnp_prefix(const u_char *pptr, char *buf, u_int buflen)
1167 {
1168         u_int8_t addr[19];
1169         u_int plen;
1170
1171         TCHECK(pptr[0]);
1172         plen = pptr[0]; /* get prefix length */
1173
1174         if (152 < plen)
1175                 return -1;
1176
1177         memset(&addr, 0, sizeof(addr));
1178         TCHECK2(pptr[4], (plen + 7) / 8);
1179         memcpy(&addr, &pptr[4], (plen + 7) / 8);
1180         if (plen % 8) {
1181                 addr[(plen + 7) / 8 - 1] &=
1182                         ((0xff00 >> (plen % 8)) & 0xff);
1183         }
1184         snprintf(buf, buflen, "%s/%d",
1185                  isonsap_string(addr,(plen + 7) / 8),
1186                  plen);
1187
1188         return 1 + (plen + 7) / 8;
1189
1190 trunc:
1191         return -2;
1192 }
1193
1194 static int
1195 decode_labeled_vpn_clnp_prefix(const u_char *pptr, char *buf, u_int buflen)
1196 {
1197         u_int8_t addr[19];
1198         u_int plen;
1199
1200         TCHECK(pptr[0]);
1201         plen = pptr[0];   /* get prefix length */
1202
1203         if ((24+64) > plen)
1204                 return -1;
1205
1206         plen-=(24+64); /* adjust prefixlen - labellength - RD len*/
1207
1208         if (152 < plen)
1209                 return -1;
1210
1211         memset(&addr, 0, sizeof(addr));
1212         TCHECK2(pptr[12], (plen + 7) / 8);
1213         memcpy(&addr, &pptr[12], (plen + 7) / 8);
1214         if (plen % 8) {
1215                 addr[(plen + 7) / 8 - 1] &=
1216                         ((0xff00 >> (plen % 8)) & 0xff);
1217         }
1218         /* the label may get offsetted by 4 bits so lets shift it right */
1219         snprintf(buf, buflen, "RD: %s, %s/%d, label:%u %s",
1220                  bgp_vpn_rd_print(pptr+4),
1221                  isonsap_string(addr,(plen + 7) / 8),
1222                  plen,
1223                  EXTRACT_24BITS(pptr+1)>>4,
1224                  ((pptr[3]&1)==0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
1225
1226         return 12 + (plen + 7) / 8;
1227
1228 trunc:
1229         return -2;
1230 }
1231
1232 /*
1233  * bgp_attr_get_as_size
1234  *
1235  * Try to find the size of the ASs encoded in an as-path. It is not obvious, as
1236  * both Old speakers that do not support 4 byte AS, and the new speakers that do
1237  * support, exchange AS-Path with the same path-attribute type value 0x02.
1238  */
1239 static int
1240 bgp_attr_get_as_size (u_int8_t bgpa_type, const u_char *pptr, int len)
1241 {
1242     const u_char *tptr = pptr;
1243
1244     /*
1245      * If the path attribute is the optional AS4 path type, then we already
1246      * know, that ASs must be encoded in 4 byte format.
1247      */
1248     if (bgpa_type == BGPTYPE_AS4_PATH) {
1249         return 4;
1250     }
1251
1252     /*
1253      * Let us assume that ASs are of 2 bytes in size, and check if the AS-Path
1254      * TLV is good. If not, ask the caller to try with AS encoded as 4 bytes
1255      * each.
1256      */
1257     while (tptr < pptr + len) {
1258         TCHECK(tptr[0]);
1259
1260         /*
1261          * If we do not find a valid segment type, our guess might be wrong.
1262          */
1263         if (tptr[0] < BGP_AS_SEG_TYPE_MIN || tptr[0] > BGP_AS_SEG_TYPE_MAX) {
1264             goto trunc;
1265         }
1266         TCHECK(tptr[1]);
1267         tptr += 2 + tptr[1] * 2;
1268     }
1269
1270     /*
1271      * If we correctly reached end of the AS path attribute data content,
1272      * then most likely ASs were indeed encoded as 2 bytes.
1273      */
1274     if (tptr == pptr + len) {
1275         return 2;
1276     }
1277
1278 trunc:
1279
1280     /*
1281      * We can come here, either we did not have enough data, or if we
1282      * try to decode 4 byte ASs in 2 byte format. Either way, return 4,
1283      * so that calller can try to decode each AS as of 4 bytes. If indeed
1284      * there was not enough data, it will crib and end the parse anyways.
1285      */
1286    return 4;
1287 }
1288
1289 static int
1290 bgp_attr_print(u_int atype, const u_char *pptr, u_int len)
1291 {
1292         int i;
1293         u_int16_t af;
1294         u_int8_t safi, snpa, nhlen;
1295         union { /* copy buffer for bandwidth values */
1296             float f;
1297             u_int32_t i;
1298         } bw;
1299         int advance;
1300         u_int tlen;
1301         const u_char *tptr;
1302         char buf[MAXHOSTNAMELEN + 100];
1303         char tokbuf[TOKBUFSIZE];
1304         int  as_size;
1305
1306         tptr = pptr;
1307         tlen=len;
1308
1309         switch (atype) {
1310         case BGPTYPE_ORIGIN:
1311                 if (len != 1)
1312                         printf("invalid len");
1313                 else {
1314                         TCHECK(*tptr);
1315                         printf("%s", tok2strbuf(bgp_origin_values,
1316                                                 "Unknown Origin Typecode",
1317                                                 tptr[0],
1318                                                 tokbuf, sizeof(tokbuf)));
1319                 }
1320                 break;
1321
1322
1323         /*
1324          * Process AS4 byte path and AS2 byte path attributes here.
1325          */
1326         case BGPTYPE_AS4_PATH:
1327         case BGPTYPE_AS_PATH:
1328                 if (len % 2) {
1329                         printf("invalid len");
1330                         break;
1331                 }
1332                 if (!len) {
1333                         printf("empty");
1334                         break;
1335                 }
1336
1337                 /*
1338                  * BGP updates exchanged between New speakers that support 4
1339                  * byte AS, ASs are always encoded in 4 bytes. There is no
1340                  * definitive way to find this, just by the packet's
1341                  * contents. So, check for packet's TLV's sanity assuming
1342                  * 2 bytes first, and it does not pass, assume that ASs are
1343                  * encoded in 4 bytes format and move on.
1344                  */
1345                 as_size = bgp_attr_get_as_size(atype, pptr, len);
1346
1347                 while (tptr < pptr + len) {
1348                         TCHECK(tptr[0]);
1349                         printf("%s", tok2strbuf(bgp_as_path_segment_open_values,
1350                                                 "?", tptr[0],
1351                                                 tokbuf, sizeof(tokbuf)));
1352                         for (i = 0; i < tptr[1] * as_size; i += as_size) {
1353                             TCHECK2(tptr[2 + i], as_size);
1354                             printf("%s ",
1355                                 as_printf(astostr, sizeof(astostr),
1356                                 as_size == 2 ?
1357                                 EXTRACT_16BITS(&tptr[2 + i]) :
1358                                 EXTRACT_32BITS(&tptr[2 + i])));
1359                         }
1360                         TCHECK(tptr[0]);
1361                         printf("%s", tok2strbuf(bgp_as_path_segment_close_values,
1362                                                 "?", tptr[0],
1363                                                 tokbuf, sizeof(tokbuf)));
1364                         TCHECK(tptr[1]);
1365                         tptr += 2 + tptr[1] * as_size;
1366                 }
1367                 break;
1368         case BGPTYPE_NEXT_HOP:
1369                 if (len != 4)
1370                         printf("invalid len");
1371                 else {
1372                         TCHECK2(tptr[0], 4);
1373                         printf("%s", getname(tptr));
1374                 }
1375                 break;
1376         case BGPTYPE_MULTI_EXIT_DISC:
1377         case BGPTYPE_LOCAL_PREF:
1378                 if (len != 4)
1379                         printf("invalid len");
1380                 else {
1381                         TCHECK2(tptr[0], 4);
1382                         printf("%u", EXTRACT_32BITS(tptr));
1383                 }
1384                 break;
1385         case BGPTYPE_ATOMIC_AGGREGATE:
1386                 if (len != 0)
1387                         printf("invalid len");
1388                 break;
1389         case BGPTYPE_AGGREGATOR:
1390
1391                 /*
1392                  * Depending on the AS encoded is of 2 bytes or of 4 bytes,
1393                  * the length of this PA can be either 6 bytes or 8 bytes.
1394                  */
1395                 if (len != 6 && len != 8) {
1396                     printf("invalid len");
1397                     break;
1398                 }
1399                 TCHECK2(tptr[0], len);
1400                 if (len == 6) {
1401                     printf(" AS #%s, origin %s",
1402                         as_printf(astostr, sizeof(astostr), EXTRACT_16BITS(tptr)),
1403                         getname(tptr + 2));
1404                 } else {
1405                     printf(" AS #%s, origin %s",
1406                         as_printf(astostr, sizeof(astostr),
1407                         EXTRACT_32BITS(tptr)), getname(tptr + 4));
1408                 }
1409                 break;
1410         case BGPTYPE_AGGREGATOR4:
1411                 if (len != 8) {
1412                         printf("invalid len");
1413                         break;
1414                 }
1415                 TCHECK2(tptr[0], 8);
1416                 printf(" AS #%s, origin %s",
1417                     as_printf(astostr, sizeof(astostr), EXTRACT_32BITS(tptr)),
1418                     getname(tptr + 4));
1419                 break;
1420         case BGPTYPE_COMMUNITIES:
1421                 if (len % 4) {
1422                         printf("invalid len");
1423                         break;
1424                 }
1425                 while (tlen>0) {
1426                         u_int32_t comm;
1427                         TCHECK2(tptr[0], 4);
1428                         comm = EXTRACT_32BITS(tptr);
1429                         switch (comm) {
1430                         case BGP_COMMUNITY_NO_EXPORT:
1431                                 printf(" NO_EXPORT");
1432                                 break;
1433                         case BGP_COMMUNITY_NO_ADVERT:
1434                                 printf(" NO_ADVERTISE");
1435                                 break;
1436                         case BGP_COMMUNITY_NO_EXPORT_SUBCONFED:
1437                                 printf(" NO_EXPORT_SUBCONFED");
1438                                 break;
1439                         default:
1440                                 printf("%u:%u%s",
1441                                        (comm >> 16) & 0xffff,
1442                                        comm & 0xffff,
1443                                        (tlen>4) ? ", " : "");
1444                                 break;
1445                         }
1446                         tlen -=4;
1447                         tptr +=4;
1448                 }
1449                 break;
1450         case BGPTYPE_ORIGINATOR_ID:
1451                 if (len != 4) {
1452                         printf("invalid len");
1453                         break;
1454                 }
1455                 TCHECK2(tptr[0], 4);
1456                 printf("%s",getname(tptr));
1457                 break;
1458         case BGPTYPE_CLUSTER_LIST:
1459                 if (len % 4) {
1460                         printf("invalid len");
1461                         break;
1462                 }
1463                 while (tlen>0) {
1464                         TCHECK2(tptr[0], 4);
1465                         printf("%s%s",
1466                                getname(tptr),
1467                                 (tlen>4) ? ", " : "");
1468                         tlen -=4;
1469                         tptr +=4;
1470                 }
1471                 break;
1472         case BGPTYPE_MP_REACH_NLRI:
1473                 TCHECK2(tptr[0], 3);
1474                 af = EXTRACT_16BITS(tptr);
1475                 safi = tptr[2];
1476
1477                 printf("\n\t    AFI: %s (%u), %sSAFI: %s (%u)",
1478                        tok2strbuf(af_values, "Unknown AFI", af,
1479                                   tokbuf, sizeof(tokbuf)),
1480                        af,
1481                        (safi>128) ? "vendor specific " : "", /* 128 is meanwhile wellknown */
1482                        tok2strbuf(bgp_safi_values, "Unknown SAFI", safi,
1483                                   tokbuf, sizeof(tokbuf)),
1484                        safi);
1485
1486                 switch(af<<8 | safi) {
1487                 case (AFNUM_INET<<8 | SAFNUM_UNICAST):
1488                 case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
1489                 case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
1490                 case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
1491                 case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
1492                 case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
1493                 case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
1494                 case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
1495                 case (AFNUM_INET<<8 | SAFNUM_MULTICAST_VPN):
1496                 case (AFNUM_INET<<8 | SAFNUM_MDT):
1497 #ifdef INET6
1498                 case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
1499                 case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
1500                 case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
1501                 case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
1502                 case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
1503                 case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
1504                 case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
1505 #endif
1506                 case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
1507                 case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
1508                 case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):
1509                 case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST):
1510                 case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
1511                 case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):
1512                 case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST):
1513                 case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
1514                 case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
1515                 case (AFNUM_VPLS<<8 | SAFNUM_VPLS):
1516                     break;
1517                 default:
1518                     TCHECK2(tptr[0], tlen);
1519                     printf("\n\t    no AFI %u / SAFI %u decoder",af,safi);
1520                     if (vflag <= 1)
1521                         print_unknown_data(tptr,"\n\t    ",tlen);
1522                     goto done;
1523                     break;
1524                 }
1525
1526                 tptr +=3;
1527
1528                 TCHECK(tptr[0]);
1529                 nhlen = tptr[0];
1530                 tlen = nhlen;
1531                 tptr++;
1532
1533                 if (tlen) {
1534                     printf("\n\t    nexthop: ");
1535                     while (tlen > 0) {
1536                         switch(af<<8 | safi) {
1537                         case (AFNUM_INET<<8 | SAFNUM_UNICAST):
1538                         case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
1539                         case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
1540                         case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
1541                         case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
1542                         case (AFNUM_INET<<8 | SAFNUM_MULTICAST_VPN):
1543                         case (AFNUM_INET<<8 | SAFNUM_MDT):
1544                             if (tlen < (int)sizeof(struct in_addr)) {
1545                                 printf("invalid len");
1546                                 tlen = 0;
1547                             } else {
1548                                 TCHECK2(tptr[0], sizeof(struct in_addr));
1549                                 printf("%s",getname(tptr));
1550                                 tlen -= sizeof(struct in_addr);
1551                                 tptr += sizeof(struct in_addr);
1552                             }
1553                             break;
1554                         case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
1555                         case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
1556                         case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
1557                             if (tlen < (int)(sizeof(struct in_addr)+BGP_VPN_RD_LEN)) {
1558                                 printf("invalid len");
1559                                 tlen = 0;
1560                             } else {
1561                                 TCHECK2(tptr[0], sizeof(struct in_addr)+BGP_VPN_RD_LEN);
1562                                 printf("RD: %s, %s",
1563                                        bgp_vpn_rd_print(tptr),
1564                                        getname(tptr+BGP_VPN_RD_LEN));
1565                                 tlen -= (sizeof(struct in_addr)+BGP_VPN_RD_LEN);
1566                                 tptr += (sizeof(struct in_addr)+BGP_VPN_RD_LEN);
1567                             }
1568                             break;
1569 #ifdef INET6
1570                         case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
1571                         case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
1572                         case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
1573                         case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
1574                             if (tlen < (int)sizeof(struct in6_addr)) {
1575                                 printf("invalid len");
1576                                 tlen = 0;
1577                             } else {
1578                                 TCHECK2(tptr[0], sizeof(struct in6_addr));
1579                                 printf("%s", getname6(tptr));
1580                                 tlen -= sizeof(struct in6_addr);
1581                                 tptr += sizeof(struct in6_addr);
1582                             }
1583                             break;
1584                         case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
1585                         case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
1586                         case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
1587                             if (tlen < (int)(sizeof(struct in6_addr)+BGP_VPN_RD_LEN)) {
1588                                 printf("invalid len");
1589                                 tlen = 0;
1590                             } else {
1591                                 TCHECK2(tptr[0], sizeof(struct in6_addr)+BGP_VPN_RD_LEN);
1592                                 printf("RD: %s, %s",
1593                                        bgp_vpn_rd_print(tptr),
1594                                        getname6(tptr+BGP_VPN_RD_LEN));
1595                                 tlen -= (sizeof(struct in6_addr)+BGP_VPN_RD_LEN);
1596                                 tptr += (sizeof(struct in6_addr)+BGP_VPN_RD_LEN);
1597                             }
1598                             break;
1599 #endif
1600                         case (AFNUM_VPLS<<8 | SAFNUM_VPLS):
1601                         case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST):
1602                         case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
1603                         case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
1604                             if (tlen < (int)sizeof(struct in_addr)) {
1605                                 printf("invalid len");
1606                                 tlen = 0;
1607                             } else {
1608                                 TCHECK2(tptr[0], sizeof(struct in_addr));
1609                                 printf("%s", getname(tptr));
1610                                 tlen -= (sizeof(struct in_addr));
1611                                 tptr += (sizeof(struct in_addr));
1612                             }
1613                             break;
1614                         case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
1615                         case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
1616                         case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):
1617                             TCHECK2(tptr[0], tlen);
1618                             printf("%s",isonsap_string(tptr,tlen));
1619                             tptr += tlen;
1620                             tlen = 0;
1621                             break;
1622
1623                         case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST):
1624                         case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
1625                         case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):
1626                             if (tlen < BGP_VPN_RD_LEN+1) {
1627                                 printf("invalid len");
1628                                 tlen = 0;
1629                             } else {
1630                                 TCHECK2(tptr[0], tlen);
1631                                 printf("RD: %s, %s",
1632                                        bgp_vpn_rd_print(tptr),
1633                                        isonsap_string(tptr+BGP_VPN_RD_LEN,tlen-BGP_VPN_RD_LEN));
1634                                 /* rfc986 mapped IPv4 address ? */
1635                                 if (EXTRACT_32BITS(tptr+BGP_VPN_RD_LEN) ==  0x47000601)
1636                                     printf(" = %s", getname(tptr+BGP_VPN_RD_LEN+4));
1637 #ifdef INET6
1638                                 /* rfc1888 mapped IPv6 address ? */
1639                                 else if (EXTRACT_24BITS(tptr+BGP_VPN_RD_LEN) ==  0x350000)
1640                                     printf(" = %s", getname6(tptr+BGP_VPN_RD_LEN+3));
1641 #endif
1642                                 tptr += tlen;
1643                                 tlen = 0;
1644                             }
1645                             break;
1646                         default:
1647                             TCHECK2(tptr[0], tlen);
1648                             printf("no AFI %u/SAFI %u decoder",af,safi);
1649                             if (vflag <= 1)
1650                                 print_unknown_data(tptr,"\n\t    ",tlen);
1651                             tptr += tlen;
1652                             tlen = 0;
1653                             goto done;
1654                             break;
1655                         }
1656                     }
1657                 }
1658                 printf(", nh-length: %u", nhlen);
1659                 tptr += tlen;
1660
1661                 TCHECK(tptr[0]);
1662                 snpa = tptr[0];
1663                 tptr++;
1664
1665                 if (snpa) {
1666                         printf("\n\t    %u SNPA", snpa);
1667                         for (/*nothing*/; snpa > 0; snpa--) {
1668                                 TCHECK(tptr[0]);
1669                                 printf("\n\t      %d bytes", tptr[0]);
1670                                 tptr += tptr[0] + 1;
1671                         }
1672                 } else {
1673                         printf(", no SNPA");
1674                 }
1675
1676                 while (len - (tptr - pptr) > 0) {
1677                     switch (af<<8 | safi) {
1678                     case (AFNUM_INET<<8 | SAFNUM_UNICAST):
1679                     case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
1680                     case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
1681                         advance = decode_prefix4(tptr, len, buf, sizeof(buf));
1682                         if (advance == -1)
1683                             printf("\n\t    (illegal prefix length)");
1684                         else if (advance == -2)
1685                             goto trunc;
1686                         else if (advance == -3)
1687                             break; /* bytes left, but not enough */
1688                         else
1689                             printf("\n\t      %s", buf);
1690                         break;
1691                     case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
1692                         advance = decode_labeled_prefix4(tptr, len, buf, sizeof(buf));
1693                         if (advance == -1)
1694                             printf("\n\t    (illegal prefix length)");
1695                         else if (advance == -2)
1696                             goto trunc;
1697                         else if (advance == -3)
1698                             break; /* bytes left, but not enough */
1699                         else
1700                             printf("\n\t      %s", buf);
1701                         break;
1702                     case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
1703                     case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
1704                     case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
1705                         advance = decode_labeled_vpn_prefix4(tptr, buf, sizeof(buf));
1706                         if (advance == -1)
1707                             printf("\n\t    (illegal prefix length)");
1708                         else if (advance == -2)
1709                             goto trunc;
1710                         else
1711                             printf("\n\t      %s", buf);
1712                         break;
1713                     case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
1714                         advance = decode_rt_routing_info(tptr, buf, sizeof(buf));
1715                         if (advance == -1)
1716                             printf("\n\t    (illegal prefix length)");
1717                         else if (advance == -2)
1718                             goto trunc;
1719                         else
1720                             printf("\n\t      %s", buf);
1721                         break;
1722                     case (AFNUM_INET<<8 | SAFNUM_MULTICAST_VPN): /* fall through */
1723                     case (AFNUM_INET6<<8 | SAFNUM_MULTICAST_VPN):
1724                         advance = decode_multicast_vpn(tptr, buf, sizeof(buf));
1725                         if (advance == -1)
1726                             printf("\n\t    (illegal prefix length)");
1727                         else if (advance == -2)
1728                             goto trunc;
1729                         else
1730                             printf("\n\t      %s", buf);
1731                         break;
1732
1733                     case (AFNUM_INET<<8 | SAFNUM_MDT):
1734                       advance = decode_mdt_vpn_nlri(tptr, buf, sizeof(buf));
1735                       if (advance == -1)
1736                             printf("\n\t    (illegal prefix length)");
1737                         else if (advance == -2)
1738                             goto trunc;
1739                         else
1740                             printf("\n\t      %s", buf);
1741                        break;
1742 #ifdef INET6
1743                     case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
1744                     case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
1745                     case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
1746                         advance = decode_prefix6(tptr, len, buf, sizeof(buf));
1747                         if (advance == -1)
1748                             printf("\n\t    (illegal prefix length)");
1749                         else if (advance == -2)
1750                             goto trunc;
1751                         else if (advance == -3)
1752                             break; /* bytes left, but not enough */
1753                         else
1754                             printf("\n\t      %s", buf);
1755                         break;
1756                     case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
1757                         advance = decode_labeled_prefix6(tptr, len, buf, sizeof(buf));
1758                         if (advance == -1)
1759                             printf("\n\t    (illegal prefix length)");
1760                         else if (advance == -2)
1761                             goto trunc;
1762                         else if (advance == -3)
1763                             break; /* bytes left, but not enough */
1764                         else
1765                             printf("\n\t      %s", buf);
1766                         break;
1767                     case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
1768                     case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
1769                     case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
1770                         advance = decode_labeled_vpn_prefix6(tptr, buf, sizeof(buf));
1771                         if (advance == -1)
1772                             printf("\n\t    (illegal prefix length)");
1773                         else if (advance == -2)
1774                             goto trunc;
1775                         else
1776                             printf("\n\t      %s", buf);
1777                         break;
1778 #endif
1779                     case (AFNUM_VPLS<<8 | SAFNUM_VPLS):
1780                     case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST):
1781                     case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
1782                     case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
1783                         advance = decode_labeled_vpn_l2(tptr, buf, sizeof(buf));
1784                         if (advance == -1)
1785                             printf("\n\t    (illegal length)");
1786                         else if (advance == -2)
1787                             goto trunc;
1788                         else
1789                             printf("\n\t      %s", buf);
1790                         break;
1791                     case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
1792                     case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
1793                     case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):
1794                         advance = decode_clnp_prefix(tptr, buf, sizeof(buf));
1795                         if (advance == -1)
1796                             printf("\n\t    (illegal prefix length)");
1797                         else if (advance == -2)
1798                             goto trunc;
1799                         else
1800                             printf("\n\t      %s", buf);
1801                         break;
1802                     case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST):
1803                     case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
1804                     case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):
1805                         advance = decode_labeled_vpn_clnp_prefix(tptr, buf, sizeof(buf));
1806                         if (advance == -1)
1807                             printf("\n\t    (illegal prefix length)");
1808                         else if (advance == -2)
1809                             goto trunc;
1810                         else
1811                             printf("\n\t      %s", buf);
1812                         break;
1813                     default:
1814                         TCHECK2(*tptr,tlen);
1815                         printf("\n\t    no AFI %u / SAFI %u decoder",af,safi);
1816                         if (vflag <= 1)
1817                             print_unknown_data(tptr,"\n\t    ",tlen);
1818                         advance = 0;
1819                         tptr = pptr + len;
1820                         break;
1821                     }
1822                     if (advance < 0)
1823                         break;
1824                     tptr += advance;
1825                 }
1826         done:
1827                 break;
1828
1829         case BGPTYPE_MP_UNREACH_NLRI:
1830                 TCHECK2(tptr[0], BGP_MP_NLRI_MINSIZE);
1831                 af = EXTRACT_16BITS(tptr);
1832                 safi = tptr[2];
1833
1834                 printf("\n\t    AFI: %s (%u), %sSAFI: %s (%u)",
1835                        tok2strbuf(af_values, "Unknown AFI", af,
1836                                   tokbuf, sizeof(tokbuf)),
1837                        af,
1838                        (safi>128) ? "vendor specific " : "", /* 128 is meanwhile wellknown */
1839                        tok2strbuf(bgp_safi_values, "Unknown SAFI", safi,
1840                                   tokbuf, sizeof(tokbuf)),
1841                        safi);
1842
1843                 if (len == BGP_MP_NLRI_MINSIZE)
1844                     printf("\n\t      End-of-Rib Marker (empty NLRI)");
1845
1846                 tptr += 3;
1847
1848                 while (len - (tptr - pptr) > 0) {
1849                     switch (af<<8 | safi) {
1850                     case (AFNUM_INET<<8 | SAFNUM_UNICAST):
1851                     case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
1852                     case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
1853                         advance = decode_prefix4(tptr, len, buf, sizeof(buf));
1854                         if (advance == -1)
1855                             printf("\n\t    (illegal prefix length)");
1856                         else if (advance == -2)
1857                             goto trunc;
1858                         else if (advance == -3)
1859                             break; /* bytes left, but not enough */
1860                         else
1861                             printf("\n\t      %s", buf);
1862                         break;
1863                     case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
1864                         advance = decode_labeled_prefix4(tptr, len, buf, sizeof(buf));
1865                         if (advance == -1)
1866                             printf("\n\t    (illegal prefix length)");
1867                         else if (advance == -2)
1868                             goto trunc;
1869                         else if (advance == -3)
1870                             break; /* bytes left, but not enough */
1871                         else
1872                             printf("\n\t      %s", buf);
1873                         break;
1874                     case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
1875                     case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
1876                     case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
1877                         advance = decode_labeled_vpn_prefix4(tptr, buf, sizeof(buf));
1878                         if (advance == -1)
1879                             printf("\n\t    (illegal prefix length)");
1880                         else if (advance == -2)
1881                             goto trunc;
1882                         else
1883                             printf("\n\t      %s", buf);
1884                         break;
1885 #ifdef INET6
1886                     case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
1887                     case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
1888                     case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
1889                         advance = decode_prefix6(tptr, len, buf, sizeof(buf));
1890                         if (advance == -1)
1891                             printf("\n\t    (illegal prefix length)");
1892                         else if (advance == -2)
1893                             goto trunc;
1894                         else if (advance == -3)
1895                             break; /* bytes left, but not enough */
1896                         else
1897                             printf("\n\t      %s", buf);
1898                         break;
1899                     case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
1900                         advance = decode_labeled_prefix6(tptr, len, buf, sizeof(buf));
1901                         if (advance == -1)
1902                             printf("\n\t    (illegal prefix length)");
1903                         else if (advance == -2)
1904                             goto trunc;
1905                         else if (advance == -3)
1906                             break; /* bytes left, but not enough */
1907                         else
1908                             printf("\n\t      %s", buf);
1909                         break;
1910                     case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
1911                     case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
1912                     case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
1913                         advance = decode_labeled_vpn_prefix6(tptr, buf, sizeof(buf));
1914                         if (advance == -1)
1915                             printf("\n\t    (illegal prefix length)");
1916                         else if (advance == -2)
1917                             goto trunc;
1918                         else
1919                             printf("\n\t      %s", buf);
1920                         break;
1921 #endif
1922                     case (AFNUM_VPLS<<8 | SAFNUM_VPLS):
1923                     case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST):
1924                     case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
1925                     case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
1926                         advance = decode_labeled_vpn_l2(tptr, buf, sizeof(buf));
1927                         if (advance == -1)
1928                             printf("\n\t    (illegal length)");
1929                         else if (advance == -2)
1930                             goto trunc;
1931                         else
1932                             printf("\n\t      %s", buf);
1933                         break;
1934                     case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
1935                     case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
1936                     case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):
1937                         advance = decode_clnp_prefix(tptr, buf, sizeof(buf));
1938                         if (advance == -1)
1939                             printf("\n\t    (illegal prefix length)");
1940                         else if (advance == -2)
1941                             goto trunc;
1942                         else
1943                             printf("\n\t      %s", buf);
1944                         break;
1945                     case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST):
1946                     case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
1947                     case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):
1948                         advance = decode_labeled_vpn_clnp_prefix(tptr, buf, sizeof(buf));
1949                         if (advance == -1)
1950                             printf("\n\t    (illegal prefix length)");
1951                         else if (advance == -2)
1952                             goto trunc;
1953                         else
1954                             printf("\n\t      %s", buf);
1955                         break;
1956                     case (AFNUM_INET<<8 | SAFNUM_MDT):
1957                       advance = decode_mdt_vpn_nlri(tptr, buf, sizeof(buf));
1958                       if (advance == -1)
1959                             printf("\n\t    (illegal prefix length)");
1960                         else if (advance == -2)
1961                             goto trunc;
1962                         else
1963                             printf("\n\t      %s", buf);
1964                        break;
1965                     case (AFNUM_INET<<8 | SAFNUM_MULTICAST_VPN): /* fall through */
1966                     case (AFNUM_INET6<<8 | SAFNUM_MULTICAST_VPN):
1967                         advance = decode_multicast_vpn(tptr, buf, sizeof(buf));
1968                         if (advance == -1)
1969                             printf("\n\t    (illegal prefix length)");
1970                         else if (advance == -2)
1971                             goto trunc;
1972                         else
1973                             printf("\n\t      %s", buf);
1974                         break;
1975                     default:
1976                         TCHECK2(*(tptr-3),tlen);
1977                         printf("no AFI %u / SAFI %u decoder",af,safi);
1978                         if (vflag <= 1)
1979                             print_unknown_data(tptr-3,"\n\t    ",tlen);
1980                         advance = 0;
1981                         tptr = pptr + len;
1982                         break;
1983                     }
1984                     if (advance < 0)
1985                         break;
1986                     tptr += advance;
1987                 }
1988                 break;
1989         case BGPTYPE_EXTD_COMMUNITIES:
1990                 if (len % 8) {
1991                         printf("invalid len");
1992                         break;
1993                 }
1994                 while (tlen>0) {
1995                     u_int16_t extd_comm;
1996
1997                     TCHECK2(tptr[0], 2);
1998                     extd_comm=EXTRACT_16BITS(tptr);
1999
2000                     printf("\n\t    %s (0x%04x), Flags [%s]",
2001                            tok2strbuf(bgp_extd_comm_subtype_values,
2002                                       "unknown extd community typecode",
2003                                       extd_comm, tokbuf, sizeof(tokbuf)),
2004                            extd_comm,
2005                            bittok2str(bgp_extd_comm_flag_values, "none", extd_comm));
2006
2007                     TCHECK2(*(tptr+2), 6);
2008                     switch(extd_comm) {
2009                     case BGP_EXT_COM_RT_0:
2010                     case BGP_EXT_COM_RO_0:
2011                     case BGP_EXT_COM_L2VPN_RT_0:
2012                         printf(": %u:%u (= %s)",
2013                                EXTRACT_16BITS(tptr+2),
2014                                EXTRACT_32BITS(tptr+4),
2015                                getname(tptr+4));
2016                         break;
2017                     case BGP_EXT_COM_RT_1:
2018                     case BGP_EXT_COM_RO_1:
2019                     case BGP_EXT_COM_L2VPN_RT_1:
2020                     case BGP_EXT_COM_VRF_RT_IMP:
2021                         printf(": %s:%u",
2022                                getname(tptr+2),
2023                                EXTRACT_16BITS(tptr+6));
2024                         break;
2025                     case BGP_EXT_COM_RT_2:
2026                     case BGP_EXT_COM_RO_2:
2027                         printf(": %s:%u",
2028                             as_printf(astostr, sizeof(astostr),
2029                             EXTRACT_32BITS(tptr+2)), EXTRACT_16BITS(tptr+6));
2030                         break;
2031                     case BGP_EXT_COM_LINKBAND:
2032                         bw.i = EXTRACT_32BITS(tptr+2);
2033                         printf(": bandwidth: %.3f Mbps",
2034                                bw.f*8/1000000);
2035                         break;
2036                     case BGP_EXT_COM_VPN_ORIGIN:
2037                     case BGP_EXT_COM_VPN_ORIGIN2:
2038                     case BGP_EXT_COM_VPN_ORIGIN3:
2039                     case BGP_EXT_COM_VPN_ORIGIN4:
2040                     case BGP_EXT_COM_OSPF_RID:
2041                     case BGP_EXT_COM_OSPF_RID2:
2042                         printf("%s", getname(tptr+2));
2043                         break;
2044                     case BGP_EXT_COM_OSPF_RTYPE:
2045                     case BGP_EXT_COM_OSPF_RTYPE2:
2046                         printf(": area:%s, router-type:%s, metric-type:%s%s",
2047                                getname(tptr+2),
2048                                tok2strbuf(bgp_extd_comm_ospf_rtype_values,
2049                                           "unknown (0x%02x)",
2050                                           *(tptr+6),
2051                                           tokbuf, sizeof(tokbuf)),
2052                                (*(tptr+7) &  BGP_OSPF_RTYPE_METRIC_TYPE) ? "E2" : "",
2053                                ((*(tptr+6) == BGP_OSPF_RTYPE_EXT) || (*(tptr+6) == BGP_OSPF_RTYPE_NSSA)) ? "E1" : "");
2054                         break;
2055                     case BGP_EXT_COM_L2INFO:
2056                         printf(": %s Control Flags [0x%02x]:MTU %u",
2057                                tok2strbuf(l2vpn_encaps_values,
2058                                           "unknown encaps",
2059                                           *(tptr+2),
2060                                           tokbuf, sizeof(tokbuf)),
2061                                        *(tptr+3),
2062                                EXTRACT_16BITS(tptr+4));
2063                         break;
2064                     case BGP_EXT_COM_SOURCE_AS:
2065                         printf(": AS %u", EXTRACT_16BITS(tptr+2));
2066                         break;
2067                     default:
2068                         TCHECK2(*tptr,8);
2069                         print_unknown_data(tptr,"\n\t      ",8);
2070                         break;
2071                     }
2072                     tlen -=8;
2073                     tptr +=8;
2074                 }
2075                 break;
2076
2077         case BGPTYPE_PMSI_TUNNEL:
2078         {
2079                 u_int8_t tunnel_type, flags;
2080
2081                 tunnel_type = *(tptr+1);
2082                 flags = *tptr;
2083                 tlen = len;
2084
2085                 TCHECK2(tptr[0], 5);
2086                 printf("\n\t    Tunnel-type %s (%u), Flags [%s], MPLS Label %u",
2087                        tok2str(bgp_pmsi_tunnel_values, "Unknown", tunnel_type),
2088                        tunnel_type,
2089                        bittok2str(bgp_pmsi_flag_values, "none", flags),
2090                        EXTRACT_24BITS(tptr+2)>>4);
2091
2092                 tptr +=5;
2093                 tlen -= 5;
2094
2095                 switch (tunnel_type) {
2096                 case BGP_PMSI_TUNNEL_PIM_SM: /* fall through */
2097                 case BGP_PMSI_TUNNEL_PIM_BIDIR:
2098                     TCHECK2(tptr[0], 8);
2099                     printf("\n\t      Sender %s, P-Group %s",
2100                            ipaddr_string(tptr),
2101                            ipaddr_string(tptr+4));
2102                     break;
2103
2104                 case BGP_PMSI_TUNNEL_PIM_SSM:
2105                     TCHECK2(tptr[0], 8);
2106                     printf("\n\t      Root-Node %s, P-Group %s",
2107                            ipaddr_string(tptr),
2108                            ipaddr_string(tptr+4));
2109                     break;
2110                 case BGP_PMSI_TUNNEL_INGRESS:
2111                     TCHECK2(tptr[0], 4);
2112                     printf("\n\t      Tunnel-Endpoint %s",
2113                            ipaddr_string(tptr));
2114                     break;
2115                 case BGP_PMSI_TUNNEL_LDP_P2MP: /* fall through */
2116                 case BGP_PMSI_TUNNEL_LDP_MP2MP:
2117                     TCHECK2(tptr[0], 8);
2118                     printf("\n\t      Root-Node %s, LSP-ID 0x%08x",
2119                            ipaddr_string(tptr),
2120                            EXTRACT_32BITS(tptr+4));
2121                     break;
2122                 case BGP_PMSI_TUNNEL_RSVP_P2MP:
2123                     TCHECK2(tptr[0], 8);
2124                     printf("\n\t      Extended-Tunnel-ID %s, P2MP-ID 0x%08x",
2125                            ipaddr_string(tptr),
2126                            EXTRACT_32BITS(tptr+4));
2127                     break;
2128                 default:
2129                     if (vflag <= 1) {
2130                         print_unknown_data(tptr,"\n\t      ",tlen);
2131                     }
2132                 }
2133                 break;
2134         }
2135         case BGPTYPE_ATTR_SET:
2136                 TCHECK2(tptr[0], 4);
2137                 if (len < 4)
2138                         goto trunc;
2139                 printf("\n\t    Origin AS: %s",
2140                     as_printf(astostr, sizeof(astostr), EXTRACT_32BITS(tptr)));
2141                 tptr+=4;
2142                 len -=4;
2143
2144                 while (len) {
2145                     u_int aflags, atype, alenlen, alen;
2146
2147                     TCHECK2(tptr[0], 2);
2148                     if (len < 2)
2149                         goto trunc;
2150                     aflags = *tptr;
2151                     atype = *(tptr + 1);
2152                     tptr += 2;
2153                     len -= 2;
2154                     alenlen = bgp_attr_lenlen(aflags, tptr);
2155                     TCHECK2(tptr[0], alenlen);
2156                     if (len < alenlen)
2157                         goto trunc;
2158                     alen = bgp_attr_len(aflags, tptr);
2159                     tptr += alenlen;
2160                     len -= alenlen;
2161
2162                     printf("\n\t      %s (%u), length: %u",
2163                            tok2strbuf(bgp_attr_values,
2164                                       "Unknown Attribute", atype,
2165                                       tokbuf, sizeof(tokbuf)),
2166                            atype,
2167                            alen);
2168
2169                     if (aflags) {
2170                         printf(", Flags [%s%s%s%s",
2171                                aflags & 0x80 ? "O" : "",
2172                                aflags & 0x40 ? "T" : "",
2173                                aflags & 0x20 ? "P" : "",
2174                                aflags & 0x10 ? "E" : "");
2175                         if (aflags & 0xf)
2176                             printf("+%x", aflags & 0xf);
2177                         printf("]: ");
2178                     }
2179                     /* FIXME check for recursion */
2180                     if (!bgp_attr_print(atype, tptr, alen))
2181                         return 0;
2182                     tptr += alen;
2183                     len -= alen;
2184                 }
2185                 break;
2186
2187
2188         default:
2189             TCHECK2(*pptr,len);
2190             printf("\n\t    no Attribute %u decoder",atype); /* we have no decoder for the attribute */
2191             if (vflag <= 1)
2192                 print_unknown_data(pptr,"\n\t    ",len);
2193             break;
2194         }
2195         if (vflag > 1 && len) { /* omit zero length attributes*/
2196             TCHECK2(*pptr,len);
2197             print_unknown_data(pptr,"\n\t    ",len);
2198         }
2199         return 1;
2200
2201 trunc:
2202         return 0;
2203 }
2204
2205 static void
2206 bgp_capabilities_print(const u_char *opt, int caps_len)
2207 {
2208         char tokbuf[TOKBUFSIZE];
2209         char tokbuf2[TOKBUFSIZE];
2210         int cap_type, cap_len, tcap_len, cap_offset;
2211         int i = 0;
2212
2213         while (i < caps_len) {
2214                 TCHECK2(opt[i], BGP_CAP_HEADER_SIZE);
2215                 cap_type=opt[i];
2216                 cap_len=opt[i+1];
2217                 tcap_len=cap_len;
2218                 printf("\n\t      %s (%u), length: %u",
2219                        tok2strbuf(bgp_capcode_values, "Unknown",
2220                                   cap_type, tokbuf, sizeof(tokbuf)),
2221                        cap_type,
2222                        cap_len);
2223                 TCHECK2(opt[i+2], cap_len);
2224                 switch (cap_type) {
2225                 case BGP_CAPCODE_MP:
2226                     printf("\n\t\tAFI %s (%u), SAFI %s (%u)",
2227                            tok2strbuf(af_values, "Unknown",
2228                                       EXTRACT_16BITS(opt+i+2),
2229                                       tokbuf, sizeof(tokbuf)),
2230                            EXTRACT_16BITS(opt+i+2),
2231                            tok2strbuf(bgp_safi_values, "Unknown",
2232                                       opt[i+5],
2233                                       tokbuf, sizeof(tokbuf)),
2234                            opt[i+5]);
2235                     break;
2236                 case BGP_CAPCODE_RESTART:
2237                     printf("\n\t\tRestart Flags: [%s], Restart Time %us",
2238                            ((opt[i+2])&0x80) ? "R" : "none",
2239                            EXTRACT_16BITS(opt+i+2)&0xfff);
2240                     tcap_len-=2;
2241                     cap_offset=4;
2242                     while(tcap_len>=4) {
2243                         printf("\n\t\t  AFI %s (%u), SAFI %s (%u), Forwarding state preserved: %s",
2244                                tok2strbuf(af_values,"Unknown",
2245                                           EXTRACT_16BITS(opt+i+cap_offset),
2246                                           tokbuf, sizeof(tokbuf)),
2247                                EXTRACT_16BITS(opt+i+cap_offset),
2248                                tok2strbuf(bgp_safi_values,"Unknown",
2249                                           opt[i+cap_offset+2],
2250                                           tokbuf2, sizeof(tokbuf2)),
2251                                opt[i+cap_offset+2],
2252                                ((opt[i+cap_offset+3])&0x80) ? "yes" : "no" );
2253                         tcap_len-=4;
2254                         cap_offset+=4;
2255                     }
2256                     break;
2257                 case BGP_CAPCODE_RR:
2258                 case BGP_CAPCODE_RR_CISCO:
2259                     break;
2260                 case BGP_CAPCODE_AS_NEW:
2261
2262                     /*
2263                      * Extract the 4 byte AS number encoded.
2264                      */
2265                     if (cap_len == 4) {
2266                         printf("\n\t\t 4 Byte AS %s",
2267                             as_printf(astostr, sizeof(astostr),
2268                             EXTRACT_32BITS(opt + i + 2)));
2269                     }
2270                     break;
2271                 default:
2272                     printf("\n\t\tno decoder for Capability %u",
2273                            cap_type);
2274                     if (vflag <= 1)
2275                         print_unknown_data(&opt[i+2],"\n\t\t",cap_len);
2276                     break;
2277                 }
2278                 if (vflag > 1 && cap_len > 0) {
2279                     print_unknown_data(&opt[i+2],"\n\t\t",cap_len);
2280                 }
2281                 i += BGP_CAP_HEADER_SIZE + cap_len;
2282         }
2283         return;
2284
2285 trunc:
2286         printf("[|BGP]");
2287 }
2288
2289 static void
2290 bgp_open_print(const u_char *dat, int length)
2291 {
2292         struct bgp_open bgpo;
2293         struct bgp_opt bgpopt;
2294         const u_char *opt;
2295         int i;
2296         char tokbuf[TOKBUFSIZE];
2297
2298         TCHECK2(dat[0], BGP_OPEN_SIZE);
2299         memcpy(&bgpo, dat, BGP_OPEN_SIZE);
2300
2301         printf("\n\t  Version %d, ", bgpo.bgpo_version);
2302         printf("my AS %s, ",
2303             as_printf(astostr, sizeof(astostr), ntohs(bgpo.bgpo_myas)));
2304         printf("Holdtime %us, ", ntohs(bgpo.bgpo_holdtime));
2305         printf("ID %s", getname((u_char *)&bgpo.bgpo_id));
2306         printf("\n\t  Optional parameters, length: %u", bgpo.bgpo_optlen);
2307
2308         /* some little sanity checking */
2309         if (length < bgpo.bgpo_optlen+BGP_OPEN_SIZE)
2310             return;
2311
2312         /* ugly! */
2313         opt = &((const struct bgp_open *)dat)->bgpo_optlen;
2314         opt++;
2315
2316         i = 0;
2317         while (i < bgpo.bgpo_optlen) {
2318                 TCHECK2(opt[i], BGP_OPT_SIZE);
2319                 memcpy(&bgpopt, &opt[i], BGP_OPT_SIZE);
2320                 if (i + 2 + bgpopt.bgpopt_len > bgpo.bgpo_optlen) {
2321                         printf("\n\t     Option %d, length: %u", bgpopt.bgpopt_type, bgpopt.bgpopt_len);
2322                         break;
2323                 }
2324
2325                 printf("\n\t    Option %s (%u), length: %u",
2326                        tok2strbuf(bgp_opt_values,"Unknown",
2327                                   bgpopt.bgpopt_type,
2328                                   tokbuf, sizeof(tokbuf)),
2329                        bgpopt.bgpopt_type,
2330                        bgpopt.bgpopt_len);
2331
2332                 /* now let's decode the options we know*/
2333                 switch(bgpopt.bgpopt_type) {
2334
2335                 case BGP_OPT_CAP:
2336                         bgp_capabilities_print(&opt[i+BGP_OPT_SIZE],
2337                             bgpopt.bgpopt_len);
2338                         break;
2339
2340                 case BGP_OPT_AUTH:
2341                 default:
2342                        printf("\n\t      no decoder for option %u",
2343                            bgpopt.bgpopt_type);
2344                        break;
2345                 }
2346                 i += BGP_OPT_SIZE + bgpopt.bgpopt_len;
2347         }
2348         return;
2349 trunc:
2350         printf("[|BGP]");
2351 }
2352
2353 static void
2354 bgp_update_print(const u_char *dat, int length)
2355 {
2356         struct bgp bgp;
2357         const u_char *p;
2358         int withdrawn_routes_len;
2359         int len;
2360         int i;
2361         char tokbuf[TOKBUFSIZE];
2362 #ifndef INET6
2363         char buf[MAXHOSTNAMELEN + 100];
2364         int wpfx;
2365 #endif
2366
2367         TCHECK2(dat[0], BGP_SIZE);
2368         if (length < BGP_SIZE)
2369                 goto trunc;
2370         memcpy(&bgp, dat, BGP_SIZE);
2371         p = dat + BGP_SIZE;     /*XXX*/
2372         length -= BGP_SIZE;
2373
2374         /* Unfeasible routes */
2375         TCHECK2(p[0], 2);
2376         if (length < 2)
2377                 goto trunc;
2378         withdrawn_routes_len = EXTRACT_16BITS(p);
2379         p += 2;
2380         length -= 2;
2381         if (withdrawn_routes_len) {
2382                 /*
2383                  * Without keeping state from the original NLRI message,
2384                  * it's not possible to tell if this a v4 or v6 route,
2385                  * so only try to decode it if we're not v6 enabled.
2386                  */
2387                 TCHECK2(p[0], withdrawn_routes_len);
2388                 if (length < withdrawn_routes_len)
2389                         goto trunc;
2390 #ifdef INET6
2391                 printf("\n\t  Withdrawn routes: %d bytes", withdrawn_routes_len);
2392                 p += withdrawn_routes_len;
2393                 length -= withdrawn_routes_len;
2394 #else
2395                 if (withdrawn_routes_len < 2)
2396                         goto trunc;
2397                 length -= 2;
2398                 withdrawn_routes_len -= 2;
2399
2400
2401                 printf("\n\t  Withdrawn routes:");
2402
2403                 while(withdrawn_routes_len > 0) {
2404                         wpfx = decode_prefix4(p, withdrawn_routes_len, buf, sizeof(buf));
2405                         if (wpfx == -1) {
2406                                 printf("\n\t    (illegal prefix length)");
2407                                 break;
2408                         } else if (wpfx == -2)
2409                                 goto trunc;
2410                         else if (wpfx == -3)
2411                                 goto trunc; /* bytes left, but not enough */
2412                         else {
2413                                 printf("\n\t    %s", buf);
2414                                 p += wpfx;
2415                                 length -= wpfx;
2416                                 withdrawn_routes_len -= wpfx;
2417                         }
2418                 }
2419 #endif
2420         }
2421
2422         TCHECK2(p[0], 2);
2423         if (length < 2)
2424                 goto trunc;
2425         len = EXTRACT_16BITS(p);
2426         p += 2;
2427         length -= 2;
2428
2429         if (withdrawn_routes_len == 0 && len == 0 && length == 0) {
2430             /* No withdrawn routes, no path attributes, no NLRI */
2431             printf("\n\t  End-of-Rib Marker (empty NLRI)");
2432             return;
2433         }
2434
2435         if (len) {
2436                 /* do something more useful!*/
2437                 while (len) {
2438                         int aflags, atype, alenlen, alen;
2439
2440                         TCHECK2(p[0], 2);
2441                         if (len < 2)
2442                             goto trunc;
2443                         if (length < 2)
2444                             goto trunc;
2445                         aflags = *p;
2446                         atype = *(p + 1);
2447                         p += 2;
2448                         len -= 2;
2449                         length -= 2;
2450                         alenlen = bgp_attr_lenlen(aflags, p);
2451                         TCHECK2(p[0], alenlen);
2452                         if (len < alenlen)
2453                             goto trunc;
2454                         if (length < alenlen)
2455                             goto trunc;
2456                         alen = bgp_attr_len(aflags, p);
2457                         p += alenlen;
2458                         len -= alenlen;
2459                         length -= alenlen;
2460
2461                         printf("\n\t  %s (%u), length: %u",
2462                               tok2strbuf(bgp_attr_values, "Unknown Attribute",
2463                                          atype,
2464                                          tokbuf, sizeof(tokbuf)),
2465                               atype,
2466                               alen);
2467
2468                         if (aflags) {
2469                                 printf(", Flags [%s%s%s%s",
2470                                         aflags & 0x80 ? "O" : "",
2471                                         aflags & 0x40 ? "T" : "",
2472                                         aflags & 0x20 ? "P" : "",
2473                                         aflags & 0x10 ? "E" : "");
2474                                 if (aflags & 0xf)
2475                                         printf("+%x", aflags & 0xf);
2476                                 printf("]: ");
2477                         }
2478                         if (len < alen)
2479                                 goto trunc;
2480                         if (length < alen)
2481                                 goto trunc;
2482                         if (!bgp_attr_print(atype, p, alen))
2483                                 goto trunc;
2484                         p += alen;
2485                         len -= alen;
2486                         length -= alen;
2487                 }
2488         }
2489
2490         if (length) {
2491                 /*
2492                  * XXX - what if they're using the "Advertisement of
2493                  * Multiple Paths in BGP" feature:
2494                  *
2495                  * https://datatracker.ietf.org/doc/draft-ietf-idr-add-paths/
2496                  *
2497                  * http://tools.ietf.org/html/draft-ietf-idr-add-paths-06
2498                  */
2499                 printf("\n\t  Updated routes:");
2500                 while (length) {
2501                         char buf[MAXHOSTNAMELEN + 100];
2502                         i = decode_prefix4(p, length, buf, sizeof(buf));
2503                         if (i == -1) {
2504                                 printf("\n\t    (illegal prefix length)");
2505                                 break;
2506                         } else if (i == -2)
2507                                 goto trunc;
2508                         else if (i == -3)
2509                                 goto trunc; /* bytes left, but not enough */
2510                         else {
2511                                 printf("\n\t    %s", buf);
2512                                 p += i;
2513                                 length -= i;
2514                         }
2515                 }
2516         }
2517         return;
2518 trunc:
2519         printf("[|BGP]");
2520 }
2521
2522 static void
2523 bgp_notification_print(const u_char *dat, int length)
2524 {
2525         struct bgp_notification bgpn;
2526         const u_char *tptr;
2527         char tokbuf[TOKBUFSIZE];
2528         char tokbuf2[TOKBUFSIZE];
2529
2530         TCHECK2(dat[0], BGP_NOTIFICATION_SIZE);
2531         memcpy(&bgpn, dat, BGP_NOTIFICATION_SIZE);
2532
2533         /* some little sanity checking */
2534         if (length<BGP_NOTIFICATION_SIZE)
2535             return;
2536
2537         printf(", %s (%u)",
2538                tok2strbuf(bgp_notify_major_values, "Unknown Error",
2539                           bgpn.bgpn_major, tokbuf, sizeof(tokbuf)),
2540                bgpn.bgpn_major);
2541
2542         switch (bgpn.bgpn_major) {
2543
2544         case BGP_NOTIFY_MAJOR_MSG:
2545             printf(", subcode %s (%u)",
2546                    tok2strbuf(bgp_notify_minor_msg_values, "Unknown",
2547                               bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
2548                    bgpn.bgpn_minor);
2549             break;
2550         case BGP_NOTIFY_MAJOR_OPEN:
2551             printf(", subcode %s (%u)",
2552                    tok2strbuf(bgp_notify_minor_open_values, "Unknown",
2553                               bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
2554                    bgpn.bgpn_minor);
2555             break;
2556         case BGP_NOTIFY_MAJOR_UPDATE:
2557             printf(", subcode %s (%u)",
2558                    tok2strbuf(bgp_notify_minor_update_values, "Unknown",
2559                               bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
2560                    bgpn.bgpn_minor);
2561             break;
2562         case BGP_NOTIFY_MAJOR_CAP:
2563             printf(" subcode %s (%u)",
2564                    tok2strbuf(bgp_notify_minor_cap_values, "Unknown",
2565                               bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
2566                    bgpn.bgpn_minor);
2567         case BGP_NOTIFY_MAJOR_CEASE:
2568             printf(", subcode %s (%u)",
2569                    tok2strbuf(bgp_notify_minor_cease_values, "Unknown",
2570                               bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
2571                    bgpn.bgpn_minor);
2572
2573             /* draft-ietf-idr-cease-subcode-02 mentions optionally 7 bytes
2574              * for the maxprefix subtype, which may contain AFI, SAFI and MAXPREFIXES
2575              */
2576             if(bgpn.bgpn_minor == BGP_NOTIFY_MINOR_CEASE_MAXPRFX && length >= BGP_NOTIFICATION_SIZE + 7) {
2577                 tptr = dat + BGP_NOTIFICATION_SIZE;
2578                 TCHECK2(*tptr, 7);
2579                 printf(", AFI %s (%u), SAFI %s (%u), Max Prefixes: %u",
2580                        tok2strbuf(af_values, "Unknown",
2581                                   EXTRACT_16BITS(tptr), tokbuf, sizeof(tokbuf)),
2582                        EXTRACT_16BITS(tptr),
2583                        tok2strbuf(bgp_safi_values, "Unknown", *(tptr+2),
2584                                   tokbuf2, sizeof(tokbuf)),
2585                        *(tptr+2),
2586                        EXTRACT_32BITS(tptr+3));
2587             }
2588             break;
2589         default:
2590             break;
2591         }
2592
2593         return;
2594 trunc:
2595         printf("[|BGP]");
2596 }
2597
2598 static void
2599 bgp_route_refresh_print(const u_char *pptr, int len) {
2600
2601         const struct bgp_route_refresh *bgp_route_refresh_header;
2602         char tokbuf[TOKBUFSIZE];
2603         char tokbuf2[TOKBUFSIZE];
2604
2605         TCHECK2(pptr[0], BGP_ROUTE_REFRESH_SIZE);
2606
2607         /* some little sanity checking */
2608         if (len<BGP_ROUTE_REFRESH_SIZE)
2609             return;
2610
2611         bgp_route_refresh_header = (const struct bgp_route_refresh *)pptr;
2612
2613         printf("\n\t  AFI %s (%u), SAFI %s (%u)",
2614                tok2strbuf(af_values,"Unknown",
2615                           /* this stinks but the compiler pads the structure
2616                            * weird */
2617                           EXTRACT_16BITS(&bgp_route_refresh_header->afi),
2618                           tokbuf, sizeof(tokbuf)),
2619                EXTRACT_16BITS(&bgp_route_refresh_header->afi),
2620                tok2strbuf(bgp_safi_values,"Unknown",
2621                           bgp_route_refresh_header->safi,
2622                           tokbuf2, sizeof(tokbuf2)),
2623                bgp_route_refresh_header->safi);
2624
2625         if (vflag > 1) {
2626             TCHECK2(*pptr, len);
2627             print_unknown_data(pptr,"\n\t  ", len);
2628         }
2629
2630         return;
2631 trunc:
2632         printf("[|BGP]");
2633 }
2634
2635 static int
2636 bgp_header_print(const u_char *dat, int length)
2637 {
2638         struct bgp bgp;
2639         char tokbuf[TOKBUFSIZE];
2640
2641         TCHECK2(dat[0], BGP_SIZE);
2642         memcpy(&bgp, dat, BGP_SIZE);
2643         printf("\n\t%s Message (%u), length: %u",
2644                tok2strbuf(bgp_msg_values, "Unknown", bgp.bgp_type,
2645                           tokbuf, sizeof(tokbuf)),
2646                bgp.bgp_type,
2647                length);
2648
2649         switch (bgp.bgp_type) {
2650         case BGP_OPEN:
2651                 bgp_open_print(dat, length);
2652                 break;
2653         case BGP_UPDATE:
2654                 bgp_update_print(dat, length);
2655                 break;
2656         case BGP_NOTIFICATION:
2657                 bgp_notification_print(dat, length);
2658                 break;
2659         case BGP_KEEPALIVE:
2660                 break;
2661         case BGP_ROUTE_REFRESH:
2662                 bgp_route_refresh_print(dat, length);
2663                 break;
2664         default:
2665                 /* we have no decoder for the BGP message */
2666                 TCHECK2(*dat, length);
2667                 printf("\n\t  no Message %u decoder",bgp.bgp_type);
2668                 print_unknown_data(dat,"\n\t  ",length);
2669                 break;
2670         }
2671         return 1;
2672 trunc:
2673         printf("[|BGP]");
2674         return 0;
2675 }
2676
2677 void
2678 bgp_print(const u_char *dat, int length)
2679 {
2680         const u_char *p;
2681         const u_char *ep;
2682         const u_char *start;
2683         const u_char marker[] = {
2684                 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
2685                 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
2686         };
2687         struct bgp bgp;
2688         u_int16_t hlen;
2689         char tokbuf[TOKBUFSIZE];
2690
2691         ep = dat + length;
2692         if (snapend < dat + length)
2693                 ep = snapend;
2694
2695         printf(": BGP, length: %u",length);
2696
2697         if (vflag < 1) /* lets be less chatty */
2698                 return;
2699
2700         p = dat;
2701         start = p;
2702         while (p < ep) {
2703                 if (!TTEST2(p[0], 1))
2704                         break;
2705                 if (p[0] != 0xff) {
2706                         p++;
2707                         continue;
2708                 }
2709
2710                 if (!TTEST2(p[0], sizeof(marker)))
2711                         break;
2712                 if (memcmp(p, marker, sizeof(marker)) != 0) {
2713                         p++;
2714                         continue;
2715                 }
2716
2717                 /* found BGP header */
2718                 TCHECK2(p[0], BGP_SIZE);        /*XXX*/
2719                 memcpy(&bgp, p, BGP_SIZE);
2720
2721                 if (start != p)
2722                         printf(" [|BGP]");
2723
2724                 hlen = ntohs(bgp.bgp_len);
2725                 if (hlen < BGP_SIZE) {
2726                         printf("\n[|BGP Bogus header length %u < %u]", hlen,
2727                             BGP_SIZE);
2728                         break;
2729                 }
2730
2731                 if (TTEST2(p[0], hlen)) {
2732                         if (!bgp_header_print(p, hlen))
2733                                 return;
2734                         p += hlen;
2735                         start = p;
2736                 } else {
2737                         printf("\n[|BGP %s]",
2738                                tok2strbuf(bgp_msg_values,
2739                                           "Unknown Message Type",
2740                                           bgp.bgp_type,
2741                                           tokbuf, sizeof(tokbuf)));
2742                         break;
2743                 }
2744         }
2745
2746         return;
2747
2748 trunc:
2749         printf(" [|BGP]");
2750 }
2751
2752 /*
2753  * Local Variables:
2754  * c-style: whitesmith
2755  * c-basic-offset: 4
2756  * End:
2757  */