The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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_ = |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 39 | "@(#) $Header: /tcpdump/master/tcpdump/print-bgp.c,v 1.118 2007-12-07 15:54:52 hannes Exp $"; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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" |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 52 | #include "af.h" |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 53 | #include "l2vpn.h" |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 68 | static const struct tok bgp_msg_values[] = { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 */ |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 96 | #define BGP_CAP_HEADER_SIZE 2 /* some compilers may pad to 4 bytes */ |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 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)) |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 */ |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 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 */ |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 141 | #define BGPTYPE_ATTR_SET 128 /* draft-marques-ppvpn-ibgp */ |
| 142 | |
| 143 | #define BGP_MP_NLRI_MINSIZE 3 /* End of RIB Marker detection */ |
| 144 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 145 | static const struct tok bgp_attr_values[] = { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 146 | { BGPTYPE_ORIGIN, "Origin"}, |
| 147 | { BGPTYPE_AS_PATH, "AS Path"}, |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 148 | { BGPTYPE_AS4_PATH, "AS4 Path"}, |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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"}, |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 154 | { BGPTYPE_AGGREGATOR4, "Aggregator4"}, |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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"}, |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 164 | { BGPTYPE_PMSI_TUNNEL, "PMSI Tunnel"}, |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 175 | #define BGP_AS_SEG_TYPE_MIN BGP_AS_SET |
| 176 | #define BGP_AS_SEG_TYPE_MAX BGP_CONFED_AS_SET |
| 177 | |
| 178 | static const struct tok bgp_as_path_segment_open_values[] = { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 179 | { BGP_AS_SEQUENCE, ""}, |
| 180 | { BGP_AS_SET, "{ "}, |
| 181 | { BGP_CONFED_AS_SEQUENCE, "( "}, |
| 182 | { BGP_CONFED_AS_SET, "({ "}, |
| 183 | { 0, NULL} |
| 184 | }; |
| 185 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 186 | static const struct tok bgp_as_path_segment_close_values[] = { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 198 | static const struct tok bgp_opt_values[] = { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 212 | static const struct tok bgp_capcode_values[] = { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 231 | static const struct tok bgp_notify_major_values[] = { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 244 | static const struct tok bgp_notify_minor_cease_values[] = { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 255 | static const struct tok bgp_notify_minor_msg_values[] = { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 256 | { 1, "Connection Not Synchronized"}, |
| 257 | { 2, "Bad Message Length"}, |
| 258 | { 3, "Bad Message Type"}, |
| 259 | { 0, NULL} |
| 260 | }; |
| 261 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 262 | static const struct tok bgp_notify_minor_open_values[] = { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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"}, |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 269 | { 7, "Capability Message Error"}, |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 270 | { 0, NULL} |
| 271 | }; |
| 272 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 273 | static const struct tok bgp_notify_minor_update_values[] = { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 288 | static const struct tok bgp_notify_minor_cap_values[] = { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 296 | static const struct tok bgp_origin_values[] = { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 297 | { 0, "IGP"}, |
| 298 | { 1, "EGP"}, |
| 299 | { 2, "Incomplete"}, |
| 300 | { 0, NULL} |
| 301 | }; |
| 302 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 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 const 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 const struct tok bgp_pmsi_flag_values[] = { |
| 323 | { 0x01, "Leaf Information required"}, |
| 324 | { 0, NULL} |
| 325 | }; |
| 326 | |
| 327 | |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 335 | /* draft-ietf-l3vpn-2547bis-mcast-bgp-02.txt */ |
| 336 | #define SAFNUM_MULTICAST_VPN 5 |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 337 | #define SAFNUM_TUNNEL 64 /* XXX */ |
| 338 | #define SAFNUM_VPLS 65 /* XXX */ |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 339 | /* draft-nalawade-idr-mdt-safi-03 */ |
| 340 | #define SAFNUM_MDT 66 |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 350 | static const struct tok bgp_safi_values[] = { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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"}, |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 362 | { SAFNUM_RT_ROUTING_INFO, "Route Target Routing Information"}, |
| 363 | { SAFNUM_MULTICAST_VPN, "Multicast VPN"}, |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 */ |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 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 | |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 408 | static const struct tok bgp_extd_comm_flag_values[] = { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 409 | { 0x8000, "vendor-specific"}, |
| 410 | { 0x4000, "non-transitive"}, |
| 411 | { 0, NULL}, |
| 412 | }; |
| 413 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 414 | static const struct tok bgp_extd_comm_subtype_values[] = { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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"}, |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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)" }, |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 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"}, |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 453 | static const struct tok bgp_extd_comm_ospf_rtype_values[] = { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 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 | |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 488 | int |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 489 | decode_prefix4(const u_char *pptr, u_int itemlen, char *buf, u_int buflen) |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 490 | { |
| 491 | struct in_addr addr; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 492 | u_int plen, plenbytes; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 493 | |
| 494 | TCHECK(pptr[0]); |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 495 | ITEMCHECK(1); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 496 | plen = pptr[0]; |
| 497 | if (32 < plen) |
| 498 | return -1; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 499 | itemlen -= 1; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 500 | |
| 501 | memset(&addr, 0, sizeof(addr)); |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 502 | plenbytes = (plen + 7) / 8; |
| 503 | TCHECK2(pptr[1], plenbytes); |
| 504 | ITEMCHECK(plenbytes); |
| 505 | memcpy(&addr, &pptr[1], plenbytes); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 506 | if (plen % 8) { |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 507 | ((u_char *)&addr)[plenbytes - 1] &= |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 508 | ((0xff00 >> (plen % 8)) & 0xff); |
| 509 | } |
| 510 | snprintf(buf, buflen, "%s/%d", getname((u_char *)&addr), plen); |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 511 | return 1 + plenbytes; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 512 | |
| 513 | trunc: |
| 514 | return -2; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 515 | |
| 516 | badtlv: |
| 517 | return -3; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 518 | } |
| 519 | |
| 520 | static int |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 521 | decode_labeled_prefix4(const u_char *pptr, u_int itemlen, char *buf, u_int buflen) |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 522 | { |
| 523 | struct in_addr addr; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 524 | u_int plen, plenbytes; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 525 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 526 | /* prefix length and label = 4 bytes */ |
| 527 | TCHECK2(pptr[0], 4); |
| 528 | ITEMCHECK(4); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 546 | itemlen -= 4; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 547 | |
| 548 | memset(&addr, 0, sizeof(addr)); |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 549 | plenbytes = (plen + 7) / 8; |
| 550 | TCHECK2(pptr[4], plenbytes); |
| 551 | ITEMCHECK(plenbytes); |
| 552 | memcpy(&addr, &pptr[4], plenbytes); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 553 | if (plen % 8) { |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 554 | ((u_char *)&addr)[plenbytes - 1] &= |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 564 | return 4 + plenbytes; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 565 | |
| 566 | trunc: |
| 567 | return -2; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 568 | |
| 569 | badtlv: |
| 570 | return -3; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 571 | } |
| 572 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 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 | |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 679 | /* 2-byte-AS:number fmt*/ |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 680 | case 0: |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 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)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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: |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 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)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | } |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 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)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | /* |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 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 const 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 | /* |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 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 */ |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 986 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 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; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 997 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 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; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1043 | } |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1044 | |
| 1045 | trunc: |
| 1046 | return -2; |
| 1047 | } |
| 1048 | |
| 1049 | #ifdef INET6 |
| 1050 | int |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1051 | decode_prefix6(const u_char *pd, u_int itemlen, char *buf, u_int buflen) |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1052 | { |
| 1053 | struct in6_addr addr; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1054 | u_int plen, plenbytes; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1055 | |
| 1056 | TCHECK(pd[0]); |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1057 | ITEMCHECK(1); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1058 | plen = pd[0]; |
| 1059 | if (128 < plen) |
| 1060 | return -1; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1061 | itemlen -= 1; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1062 | |
| 1063 | memset(&addr, 0, sizeof(addr)); |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1064 | plenbytes = (plen + 7) / 8; |
| 1065 | TCHECK2(pd[1], plenbytes); |
| 1066 | ITEMCHECK(plenbytes); |
| 1067 | memcpy(&addr, &pd[1], plenbytes); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1068 | if (plen % 8) { |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1069 | addr.s6_addr[plenbytes - 1] &= |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1070 | ((0xff00 >> (plen % 8)) & 0xff); |
| 1071 | } |
| 1072 | snprintf(buf, buflen, "%s/%d", getname6((u_char *)&addr), plen); |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1073 | return 1 + plenbytes; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1074 | |
| 1075 | trunc: |
| 1076 | return -2; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1077 | |
| 1078 | badtlv: |
| 1079 | return -3; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1080 | } |
| 1081 | |
| 1082 | static int |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1083 | decode_labeled_prefix6(const u_char *pptr, u_int itemlen, char *buf, u_int buflen) |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1084 | { |
| 1085 | struct in6_addr addr; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1086 | u_int plen, plenbytes; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1087 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1088 | /* prefix length and label = 4 bytes */ |
| 1089 | TCHECK2(pptr[0], 4); |
| 1090 | ITEMCHECK(4); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1100 | itemlen -= 4; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1101 | |
| 1102 | memset(&addr, 0, sizeof(addr)); |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1103 | plenbytes = (plen + 7) / 8; |
| 1104 | TCHECK2(pptr[4], plenbytes); |
| 1105 | memcpy(&addr, &pptr[4], plenbytes); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1106 | if (plen % 8) { |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1107 | addr.s6_addr[plenbytes - 1] &= |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1117 | return 4 + plenbytes; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1118 | |
| 1119 | trunc: |
| 1120 | return -2; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1121 | |
| 1122 | badtlv: |
| 1123 | return -3; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 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 | */ |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1239 | static int |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 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) |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1300 | u_int tlen; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1301 | const u_char *tptr; |
| 1302 | char buf[MAXHOSTNAMELEN + 100]; |
| 1303 | char tokbuf[TOKBUFSIZE]; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1304 | int as_size; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1305 | |
| 1306 | tptr = pptr; |
| 1307 | tlen=len; |
| 1308 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1309 | switch (atype) { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1322 | |
| 1323 | /* |
| 1324 | * Process AS4 byte path and AS2 byte path attributes here. |
| 1325 | */ |
| 1326 | case BGPTYPE_AS4_PATH: |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 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 | |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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))); |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 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]))); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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]); |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1365 | tptr += 2 + tptr[1] * as_size; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 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) { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1412 | printf("invalid len"); |
| 1413 | break; |
| 1414 | } |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1415 | TCHECK2(tptr[0], 8); |
| 1416 | printf(" AS #%s, origin %s", |
| 1417 | as_printf(astostr, sizeof(astostr), EXTRACT_32BITS(tptr)), |
| 1418 | getname(tptr + 4)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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): |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1495 | case (AFNUM_INET<<8 | SAFNUM_MULTICAST_VPN): |
| 1496 | case (AFNUM_INET<<8 | SAFNUM_MDT): |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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): |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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) { |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1534 | int nnh = 0; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1535 | printf("\n\t nexthop: "); |
| 1536 | while (tlen > 0) { |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1537 | if ( nnh++ > 0 ) { |
| 1538 | printf( ", " ); |
| 1539 | } |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1540 | switch(af<<8 | safi) { |
| 1541 | case (AFNUM_INET<<8 | SAFNUM_UNICAST): |
| 1542 | case (AFNUM_INET<<8 | SAFNUM_MULTICAST): |
| 1543 | case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST): |
| 1544 | case (AFNUM_INET<<8 | SAFNUM_LABUNICAST): |
| 1545 | case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO): |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1546 | case (AFNUM_INET<<8 | SAFNUM_MULTICAST_VPN): |
| 1547 | case (AFNUM_INET<<8 | SAFNUM_MDT): |
| 1548 | if (tlen < (int)sizeof(struct in_addr)) { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1549 | printf("invalid len"); |
| 1550 | tlen = 0; |
| 1551 | } else { |
| 1552 | TCHECK2(tptr[0], sizeof(struct in_addr)); |
| 1553 | printf("%s",getname(tptr)); |
| 1554 | tlen -= sizeof(struct in_addr); |
| 1555 | tptr += sizeof(struct in_addr); |
| 1556 | } |
| 1557 | break; |
| 1558 | case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST): |
| 1559 | case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST): |
| 1560 | case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST): |
| 1561 | if (tlen < (int)(sizeof(struct in_addr)+BGP_VPN_RD_LEN)) { |
| 1562 | printf("invalid len"); |
| 1563 | tlen = 0; |
| 1564 | } else { |
| 1565 | TCHECK2(tptr[0], sizeof(struct in_addr)+BGP_VPN_RD_LEN); |
| 1566 | printf("RD: %s, %s", |
| 1567 | bgp_vpn_rd_print(tptr), |
| 1568 | getname(tptr+BGP_VPN_RD_LEN)); |
| 1569 | tlen -= (sizeof(struct in_addr)+BGP_VPN_RD_LEN); |
| 1570 | tptr += (sizeof(struct in_addr)+BGP_VPN_RD_LEN); |
| 1571 | } |
| 1572 | break; |
| 1573 | #ifdef INET6 |
| 1574 | case (AFNUM_INET6<<8 | SAFNUM_UNICAST): |
| 1575 | case (AFNUM_INET6<<8 | SAFNUM_MULTICAST): |
| 1576 | case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST): |
| 1577 | case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST): |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1578 | if (tlen < (int)sizeof(struct in6_addr)) { |
| 1579 | printf("invalid len"); |
| 1580 | tlen = 0; |
| 1581 | } else { |
| 1582 | TCHECK2(tptr[0], sizeof(struct in6_addr)); |
| 1583 | printf("%s", getname6(tptr)); |
| 1584 | tlen -= sizeof(struct in6_addr); |
| 1585 | tptr += sizeof(struct in6_addr); |
| 1586 | } |
| 1587 | break; |
| 1588 | case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST): |
| 1589 | case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST): |
| 1590 | case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST): |
| 1591 | if (tlen < (int)(sizeof(struct in6_addr)+BGP_VPN_RD_LEN)) { |
| 1592 | printf("invalid len"); |
| 1593 | tlen = 0; |
| 1594 | } else { |
| 1595 | TCHECK2(tptr[0], sizeof(struct in6_addr)+BGP_VPN_RD_LEN); |
| 1596 | printf("RD: %s, %s", |
| 1597 | bgp_vpn_rd_print(tptr), |
| 1598 | getname6(tptr+BGP_VPN_RD_LEN)); |
| 1599 | tlen -= (sizeof(struct in6_addr)+BGP_VPN_RD_LEN); |
| 1600 | tptr += (sizeof(struct in6_addr)+BGP_VPN_RD_LEN); |
| 1601 | } |
| 1602 | break; |
| 1603 | #endif |
| 1604 | case (AFNUM_VPLS<<8 | SAFNUM_VPLS): |
| 1605 | case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST): |
| 1606 | case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST): |
| 1607 | case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST): |
| 1608 | if (tlen < (int)sizeof(struct in_addr)) { |
| 1609 | printf("invalid len"); |
| 1610 | tlen = 0; |
| 1611 | } else { |
| 1612 | TCHECK2(tptr[0], sizeof(struct in_addr)); |
| 1613 | printf("%s", getname(tptr)); |
| 1614 | tlen -= (sizeof(struct in_addr)); |
| 1615 | tptr += (sizeof(struct in_addr)); |
| 1616 | } |
| 1617 | break; |
| 1618 | case (AFNUM_NSAP<<8 | SAFNUM_UNICAST): |
| 1619 | case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST): |
| 1620 | case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST): |
| 1621 | TCHECK2(tptr[0], tlen); |
| 1622 | printf("%s",isonsap_string(tptr,tlen)); |
| 1623 | tptr += tlen; |
| 1624 | tlen = 0; |
| 1625 | break; |
| 1626 | |
| 1627 | case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST): |
| 1628 | case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST): |
| 1629 | case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST): |
| 1630 | if (tlen < BGP_VPN_RD_LEN+1) { |
| 1631 | printf("invalid len"); |
| 1632 | tlen = 0; |
| 1633 | } else { |
| 1634 | TCHECK2(tptr[0], tlen); |
| 1635 | printf("RD: %s, %s", |
| 1636 | bgp_vpn_rd_print(tptr), |
| 1637 | isonsap_string(tptr+BGP_VPN_RD_LEN,tlen-BGP_VPN_RD_LEN)); |
| 1638 | /* rfc986 mapped IPv4 address ? */ |
| 1639 | if (EXTRACT_32BITS(tptr+BGP_VPN_RD_LEN) == 0x47000601) |
| 1640 | printf(" = %s", getname(tptr+BGP_VPN_RD_LEN+4)); |
| 1641 | #ifdef INET6 |
| 1642 | /* rfc1888 mapped IPv6 address ? */ |
| 1643 | else if (EXTRACT_24BITS(tptr+BGP_VPN_RD_LEN) == 0x350000) |
| 1644 | printf(" = %s", getname6(tptr+BGP_VPN_RD_LEN+3)); |
| 1645 | #endif |
| 1646 | tptr += tlen; |
| 1647 | tlen = 0; |
| 1648 | } |
| 1649 | break; |
| 1650 | default: |
| 1651 | TCHECK2(tptr[0], tlen); |
| 1652 | printf("no AFI %u/SAFI %u decoder",af,safi); |
| 1653 | if (vflag <= 1) |
| 1654 | print_unknown_data(tptr,"\n\t ",tlen); |
| 1655 | tptr += tlen; |
| 1656 | tlen = 0; |
| 1657 | goto done; |
| 1658 | break; |
| 1659 | } |
| 1660 | } |
| 1661 | } |
| 1662 | printf(", nh-length: %u", nhlen); |
| 1663 | tptr += tlen; |
| 1664 | |
| 1665 | TCHECK(tptr[0]); |
| 1666 | snpa = tptr[0]; |
| 1667 | tptr++; |
| 1668 | |
| 1669 | if (snpa) { |
| 1670 | printf("\n\t %u SNPA", snpa); |
| 1671 | for (/*nothing*/; snpa > 0; snpa--) { |
| 1672 | TCHECK(tptr[0]); |
| 1673 | printf("\n\t %d bytes", tptr[0]); |
| 1674 | tptr += tptr[0] + 1; |
| 1675 | } |
| 1676 | } else { |
| 1677 | printf(", no SNPA"); |
| 1678 | } |
| 1679 | |
| 1680 | while (len - (tptr - pptr) > 0) { |
| 1681 | switch (af<<8 | safi) { |
| 1682 | case (AFNUM_INET<<8 | SAFNUM_UNICAST): |
| 1683 | case (AFNUM_INET<<8 | SAFNUM_MULTICAST): |
| 1684 | case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST): |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1685 | advance = decode_prefix4(tptr, len, buf, sizeof(buf)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1686 | if (advance == -1) |
| 1687 | printf("\n\t (illegal prefix length)"); |
| 1688 | else if (advance == -2) |
| 1689 | goto trunc; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1690 | else if (advance == -3) |
| 1691 | break; /* bytes left, but not enough */ |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1692 | else |
| 1693 | printf("\n\t %s", buf); |
| 1694 | break; |
| 1695 | case (AFNUM_INET<<8 | SAFNUM_LABUNICAST): |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1696 | advance = decode_labeled_prefix4(tptr, len, buf, sizeof(buf)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1697 | if (advance == -1) |
| 1698 | printf("\n\t (illegal prefix length)"); |
| 1699 | else if (advance == -2) |
| 1700 | goto trunc; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1701 | else if (advance == -3) |
| 1702 | break; /* bytes left, but not enough */ |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1703 | else |
| 1704 | printf("\n\t %s", buf); |
| 1705 | break; |
| 1706 | case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST): |
| 1707 | case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST): |
| 1708 | case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST): |
| 1709 | advance = decode_labeled_vpn_prefix4(tptr, buf, sizeof(buf)); |
| 1710 | if (advance == -1) |
| 1711 | printf("\n\t (illegal prefix length)"); |
| 1712 | else if (advance == -2) |
| 1713 | goto trunc; |
| 1714 | else |
| 1715 | printf("\n\t %s", buf); |
| 1716 | break; |
| 1717 | case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO): |
| 1718 | advance = decode_rt_routing_info(tptr, buf, sizeof(buf)); |
| 1719 | if (advance == -1) |
| 1720 | printf("\n\t (illegal prefix length)"); |
| 1721 | else if (advance == -2) |
| 1722 | goto trunc; |
| 1723 | else |
| 1724 | printf("\n\t %s", buf); |
| 1725 | break; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1726 | case (AFNUM_INET<<8 | SAFNUM_MULTICAST_VPN): /* fall through */ |
| 1727 | case (AFNUM_INET6<<8 | SAFNUM_MULTICAST_VPN): |
| 1728 | advance = decode_multicast_vpn(tptr, buf, sizeof(buf)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1729 | if (advance == -1) |
| 1730 | printf("\n\t (illegal prefix length)"); |
| 1731 | else if (advance == -2) |
| 1732 | goto trunc; |
| 1733 | else |
| 1734 | printf("\n\t %s", buf); |
| 1735 | break; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1736 | |
| 1737 | case (AFNUM_INET<<8 | SAFNUM_MDT): |
| 1738 | advance = decode_mdt_vpn_nlri(tptr, buf, sizeof(buf)); |
| 1739 | if (advance == -1) |
| 1740 | printf("\n\t (illegal prefix length)"); |
| 1741 | else if (advance == -2) |
| 1742 | goto trunc; |
| 1743 | else |
| 1744 | printf("\n\t %s", buf); |
| 1745 | break; |
| 1746 | #ifdef INET6 |
| 1747 | case (AFNUM_INET6<<8 | SAFNUM_UNICAST): |
| 1748 | case (AFNUM_INET6<<8 | SAFNUM_MULTICAST): |
| 1749 | case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST): |
| 1750 | advance = decode_prefix6(tptr, len, buf, sizeof(buf)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1751 | if (advance == -1) |
| 1752 | printf("\n\t (illegal prefix length)"); |
| 1753 | else if (advance == -2) |
| 1754 | goto trunc; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1755 | else if (advance == -3) |
| 1756 | break; /* bytes left, but not enough */ |
| 1757 | else |
| 1758 | printf("\n\t %s", buf); |
| 1759 | break; |
| 1760 | case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST): |
| 1761 | advance = decode_labeled_prefix6(tptr, len, buf, sizeof(buf)); |
| 1762 | if (advance == -1) |
| 1763 | printf("\n\t (illegal prefix length)"); |
| 1764 | else if (advance == -2) |
| 1765 | goto trunc; |
| 1766 | else if (advance == -3) |
| 1767 | break; /* bytes left, but not enough */ |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1768 | else |
| 1769 | printf("\n\t %s", buf); |
| 1770 | break; |
| 1771 | case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST): |
| 1772 | case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST): |
| 1773 | case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST): |
| 1774 | advance = decode_labeled_vpn_prefix6(tptr, buf, sizeof(buf)); |
| 1775 | if (advance == -1) |
| 1776 | printf("\n\t (illegal prefix length)"); |
| 1777 | else if (advance == -2) |
| 1778 | goto trunc; |
| 1779 | else |
| 1780 | printf("\n\t %s", buf); |
| 1781 | break; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1782 | #endif |
| 1783 | case (AFNUM_VPLS<<8 | SAFNUM_VPLS): |
| 1784 | case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST): |
| 1785 | case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST): |
| 1786 | case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST): |
| 1787 | advance = decode_labeled_vpn_l2(tptr, buf, sizeof(buf)); |
| 1788 | if (advance == -1) |
| 1789 | printf("\n\t (illegal length)"); |
| 1790 | else if (advance == -2) |
| 1791 | goto trunc; |
| 1792 | else |
| 1793 | printf("\n\t %s", buf); |
| 1794 | break; |
| 1795 | case (AFNUM_NSAP<<8 | SAFNUM_UNICAST): |
| 1796 | case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST): |
| 1797 | case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST): |
| 1798 | advance = decode_clnp_prefix(tptr, buf, sizeof(buf)); |
| 1799 | if (advance == -1) |
| 1800 | printf("\n\t (illegal prefix length)"); |
| 1801 | else if (advance == -2) |
| 1802 | goto trunc; |
| 1803 | else |
| 1804 | printf("\n\t %s", buf); |
| 1805 | break; |
| 1806 | case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST): |
| 1807 | case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST): |
| 1808 | case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST): |
| 1809 | advance = decode_labeled_vpn_clnp_prefix(tptr, buf, sizeof(buf)); |
| 1810 | if (advance == -1) |
| 1811 | printf("\n\t (illegal prefix length)"); |
| 1812 | else if (advance == -2) |
| 1813 | goto trunc; |
| 1814 | else |
| 1815 | printf("\n\t %s", buf); |
| 1816 | break; |
| 1817 | default: |
| 1818 | TCHECK2(*tptr,tlen); |
| 1819 | printf("\n\t no AFI %u / SAFI %u decoder",af,safi); |
| 1820 | if (vflag <= 1) |
| 1821 | print_unknown_data(tptr,"\n\t ",tlen); |
| 1822 | advance = 0; |
| 1823 | tptr = pptr + len; |
| 1824 | break; |
| 1825 | } |
| 1826 | if (advance < 0) |
| 1827 | break; |
| 1828 | tptr += advance; |
| 1829 | } |
| 1830 | done: |
| 1831 | break; |
| 1832 | |
| 1833 | case BGPTYPE_MP_UNREACH_NLRI: |
| 1834 | TCHECK2(tptr[0], BGP_MP_NLRI_MINSIZE); |
| 1835 | af = EXTRACT_16BITS(tptr); |
| 1836 | safi = tptr[2]; |
| 1837 | |
| 1838 | printf("\n\t AFI: %s (%u), %sSAFI: %s (%u)", |
| 1839 | tok2strbuf(af_values, "Unknown AFI", af, |
| 1840 | tokbuf, sizeof(tokbuf)), |
| 1841 | af, |
| 1842 | (safi>128) ? "vendor specific " : "", /* 128 is meanwhile wellknown */ |
| 1843 | tok2strbuf(bgp_safi_values, "Unknown SAFI", safi, |
| 1844 | tokbuf, sizeof(tokbuf)), |
| 1845 | safi); |
| 1846 | |
| 1847 | if (len == BGP_MP_NLRI_MINSIZE) |
| 1848 | printf("\n\t End-of-Rib Marker (empty NLRI)"); |
| 1849 | |
| 1850 | tptr += 3; |
| 1851 | |
| 1852 | while (len - (tptr - pptr) > 0) { |
| 1853 | switch (af<<8 | safi) { |
| 1854 | case (AFNUM_INET<<8 | SAFNUM_UNICAST): |
| 1855 | case (AFNUM_INET<<8 | SAFNUM_MULTICAST): |
| 1856 | case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST): |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1857 | advance = decode_prefix4(tptr, len, buf, sizeof(buf)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1858 | if (advance == -1) |
| 1859 | printf("\n\t (illegal prefix length)"); |
| 1860 | else if (advance == -2) |
| 1861 | goto trunc; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1862 | else if (advance == -3) |
| 1863 | break; /* bytes left, but not enough */ |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1864 | else |
| 1865 | printf("\n\t %s", buf); |
| 1866 | break; |
| 1867 | case (AFNUM_INET<<8 | SAFNUM_LABUNICAST): |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1868 | advance = decode_labeled_prefix4(tptr, len, buf, sizeof(buf)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1869 | if (advance == -1) |
| 1870 | printf("\n\t (illegal prefix length)"); |
| 1871 | else if (advance == -2) |
| 1872 | goto trunc; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1873 | else if (advance == -3) |
| 1874 | break; /* bytes left, but not enough */ |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1875 | else |
| 1876 | printf("\n\t %s", buf); |
| 1877 | break; |
| 1878 | case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST): |
| 1879 | case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST): |
| 1880 | case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST): |
| 1881 | advance = decode_labeled_vpn_prefix4(tptr, buf, sizeof(buf)); |
| 1882 | if (advance == -1) |
| 1883 | printf("\n\t (illegal prefix length)"); |
| 1884 | else if (advance == -2) |
| 1885 | goto trunc; |
| 1886 | else |
| 1887 | printf("\n\t %s", buf); |
| 1888 | break; |
| 1889 | #ifdef INET6 |
| 1890 | case (AFNUM_INET6<<8 | SAFNUM_UNICAST): |
| 1891 | case (AFNUM_INET6<<8 | SAFNUM_MULTICAST): |
| 1892 | case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST): |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1893 | advance = decode_prefix6(tptr, len, buf, sizeof(buf)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1894 | if (advance == -1) |
| 1895 | printf("\n\t (illegal prefix length)"); |
| 1896 | else if (advance == -2) |
| 1897 | goto trunc; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1898 | else if (advance == -3) |
| 1899 | break; /* bytes left, but not enough */ |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1900 | else |
| 1901 | printf("\n\t %s", buf); |
| 1902 | break; |
| 1903 | case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST): |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1904 | advance = decode_labeled_prefix6(tptr, len, buf, sizeof(buf)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1905 | if (advance == -1) |
| 1906 | printf("\n\t (illegal prefix length)"); |
| 1907 | else if (advance == -2) |
| 1908 | goto trunc; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1909 | else if (advance == -3) |
| 1910 | break; /* bytes left, but not enough */ |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1911 | else |
| 1912 | printf("\n\t %s", buf); |
| 1913 | break; |
| 1914 | case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST): |
| 1915 | case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST): |
| 1916 | case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST): |
| 1917 | advance = decode_labeled_vpn_prefix6(tptr, buf, sizeof(buf)); |
| 1918 | if (advance == -1) |
| 1919 | printf("\n\t (illegal prefix length)"); |
| 1920 | else if (advance == -2) |
| 1921 | goto trunc; |
| 1922 | else |
| 1923 | printf("\n\t %s", buf); |
| 1924 | break; |
| 1925 | #endif |
| 1926 | case (AFNUM_VPLS<<8 | SAFNUM_VPLS): |
| 1927 | case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST): |
| 1928 | case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST): |
| 1929 | case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST): |
| 1930 | advance = decode_labeled_vpn_l2(tptr, buf, sizeof(buf)); |
| 1931 | if (advance == -1) |
| 1932 | printf("\n\t (illegal length)"); |
| 1933 | else if (advance == -2) |
| 1934 | goto trunc; |
| 1935 | else |
| 1936 | printf("\n\t %s", buf); |
| 1937 | break; |
| 1938 | case (AFNUM_NSAP<<8 | SAFNUM_UNICAST): |
| 1939 | case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST): |
| 1940 | case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST): |
| 1941 | advance = decode_clnp_prefix(tptr, buf, sizeof(buf)); |
| 1942 | if (advance == -1) |
| 1943 | printf("\n\t (illegal prefix length)"); |
| 1944 | else if (advance == -2) |
| 1945 | goto trunc; |
| 1946 | else |
| 1947 | printf("\n\t %s", buf); |
| 1948 | break; |
| 1949 | case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST): |
| 1950 | case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST): |
| 1951 | case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST): |
| 1952 | advance = decode_labeled_vpn_clnp_prefix(tptr, buf, sizeof(buf)); |
| 1953 | if (advance == -1) |
| 1954 | printf("\n\t (illegal prefix length)"); |
| 1955 | else if (advance == -2) |
| 1956 | goto trunc; |
| 1957 | else |
| 1958 | printf("\n\t %s", buf); |
| 1959 | break; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1960 | case (AFNUM_INET<<8 | SAFNUM_MDT): |
| 1961 | advance = decode_mdt_vpn_nlri(tptr, buf, sizeof(buf)); |
| 1962 | if (advance == -1) |
| 1963 | printf("\n\t (illegal prefix length)"); |
| 1964 | else if (advance == -2) |
| 1965 | goto trunc; |
| 1966 | else |
| 1967 | printf("\n\t %s", buf); |
| 1968 | break; |
| 1969 | case (AFNUM_INET<<8 | SAFNUM_MULTICAST_VPN): /* fall through */ |
| 1970 | case (AFNUM_INET6<<8 | SAFNUM_MULTICAST_VPN): |
| 1971 | advance = decode_multicast_vpn(tptr, buf, sizeof(buf)); |
| 1972 | if (advance == -1) |
| 1973 | printf("\n\t (illegal prefix length)"); |
| 1974 | else if (advance == -2) |
| 1975 | goto trunc; |
| 1976 | else |
| 1977 | printf("\n\t %s", buf); |
| 1978 | break; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1979 | default: |
| 1980 | TCHECK2(*(tptr-3),tlen); |
| 1981 | printf("no AFI %u / SAFI %u decoder",af,safi); |
| 1982 | if (vflag <= 1) |
| 1983 | print_unknown_data(tptr-3,"\n\t ",tlen); |
| 1984 | advance = 0; |
| 1985 | tptr = pptr + len; |
| 1986 | break; |
| 1987 | } |
| 1988 | if (advance < 0) |
| 1989 | break; |
| 1990 | tptr += advance; |
| 1991 | } |
| 1992 | break; |
| 1993 | case BGPTYPE_EXTD_COMMUNITIES: |
| 1994 | if (len % 8) { |
| 1995 | printf("invalid len"); |
| 1996 | break; |
| 1997 | } |
| 1998 | while (tlen>0) { |
| 1999 | u_int16_t extd_comm; |
| 2000 | |
| 2001 | TCHECK2(tptr[0], 2); |
| 2002 | extd_comm=EXTRACT_16BITS(tptr); |
| 2003 | |
| 2004 | printf("\n\t %s (0x%04x), Flags [%s]", |
| 2005 | tok2strbuf(bgp_extd_comm_subtype_values, |
| 2006 | "unknown extd community typecode", |
| 2007 | extd_comm, tokbuf, sizeof(tokbuf)), |
| 2008 | extd_comm, |
| 2009 | bittok2str(bgp_extd_comm_flag_values, "none", extd_comm)); |
| 2010 | |
| 2011 | TCHECK2(*(tptr+2), 6); |
| 2012 | switch(extd_comm) { |
| 2013 | case BGP_EXT_COM_RT_0: |
| 2014 | case BGP_EXT_COM_RO_0: |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2015 | case BGP_EXT_COM_L2VPN_RT_0: |
| 2016 | printf(": %u:%u (= %s)", |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2017 | EXTRACT_16BITS(tptr+2), |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2018 | EXTRACT_32BITS(tptr+4), |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2019 | getname(tptr+4)); |
| 2020 | break; |
| 2021 | case BGP_EXT_COM_RT_1: |
| 2022 | case BGP_EXT_COM_RO_1: |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2023 | case BGP_EXT_COM_L2VPN_RT_1: |
| 2024 | case BGP_EXT_COM_VRF_RT_IMP: |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2025 | printf(": %s:%u", |
| 2026 | getname(tptr+2), |
| 2027 | EXTRACT_16BITS(tptr+6)); |
| 2028 | break; |
| 2029 | case BGP_EXT_COM_RT_2: |
| 2030 | case BGP_EXT_COM_RO_2: |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2031 | printf(": %s:%u", |
| 2032 | as_printf(astostr, sizeof(astostr), |
| 2033 | EXTRACT_32BITS(tptr+2)), EXTRACT_16BITS(tptr+6)); |
| 2034 | break; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2035 | case BGP_EXT_COM_LINKBAND: |
| 2036 | bw.i = EXTRACT_32BITS(tptr+2); |
| 2037 | printf(": bandwidth: %.3f Mbps", |
| 2038 | bw.f*8/1000000); |
| 2039 | break; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2040 | case BGP_EXT_COM_VPN_ORIGIN: |
| 2041 | case BGP_EXT_COM_VPN_ORIGIN2: |
| 2042 | case BGP_EXT_COM_VPN_ORIGIN3: |
| 2043 | case BGP_EXT_COM_VPN_ORIGIN4: |
| 2044 | case BGP_EXT_COM_OSPF_RID: |
| 2045 | case BGP_EXT_COM_OSPF_RID2: |
| 2046 | printf("%s", getname(tptr+2)); |
| 2047 | break; |
| 2048 | case BGP_EXT_COM_OSPF_RTYPE: |
| 2049 | case BGP_EXT_COM_OSPF_RTYPE2: |
| 2050 | printf(": area:%s, router-type:%s, metric-type:%s%s", |
| 2051 | getname(tptr+2), |
| 2052 | tok2strbuf(bgp_extd_comm_ospf_rtype_values, |
| 2053 | "unknown (0x%02x)", |
| 2054 | *(tptr+6), |
| 2055 | tokbuf, sizeof(tokbuf)), |
| 2056 | (*(tptr+7) & BGP_OSPF_RTYPE_METRIC_TYPE) ? "E2" : "", |
| 2057 | ((*(tptr+6) == BGP_OSPF_RTYPE_EXT) || (*(tptr+6) == BGP_OSPF_RTYPE_NSSA)) ? "E1" : ""); |
| 2058 | break; |
| 2059 | case BGP_EXT_COM_L2INFO: |
| 2060 | printf(": %s Control Flags [0x%02x]:MTU %u", |
| 2061 | tok2strbuf(l2vpn_encaps_values, |
| 2062 | "unknown encaps", |
| 2063 | *(tptr+2), |
| 2064 | tokbuf, sizeof(tokbuf)), |
| 2065 | *(tptr+3), |
| 2066 | EXTRACT_16BITS(tptr+4)); |
| 2067 | break; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2068 | case BGP_EXT_COM_SOURCE_AS: |
| 2069 | printf(": AS %u", EXTRACT_16BITS(tptr+2)); |
| 2070 | break; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2071 | default: |
| 2072 | TCHECK2(*tptr,8); |
| 2073 | print_unknown_data(tptr,"\n\t ",8); |
| 2074 | break; |
| 2075 | } |
| 2076 | tlen -=8; |
| 2077 | tptr +=8; |
| 2078 | } |
| 2079 | break; |
| 2080 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2081 | case BGPTYPE_PMSI_TUNNEL: |
| 2082 | { |
| 2083 | u_int8_t tunnel_type, flags; |
| 2084 | |
| 2085 | tunnel_type = *(tptr+1); |
| 2086 | flags = *tptr; |
| 2087 | tlen = len; |
| 2088 | |
| 2089 | TCHECK2(tptr[0], 5); |
| 2090 | printf("\n\t Tunnel-type %s (%u), Flags [%s], MPLS Label %u", |
| 2091 | tok2str(bgp_pmsi_tunnel_values, "Unknown", tunnel_type), |
| 2092 | tunnel_type, |
| 2093 | bittok2str(bgp_pmsi_flag_values, "none", flags), |
| 2094 | EXTRACT_24BITS(tptr+2)>>4); |
| 2095 | |
| 2096 | tptr +=5; |
| 2097 | tlen -= 5; |
| 2098 | |
| 2099 | switch (tunnel_type) { |
| 2100 | case BGP_PMSI_TUNNEL_PIM_SM: /* fall through */ |
| 2101 | case BGP_PMSI_TUNNEL_PIM_BIDIR: |
| 2102 | TCHECK2(tptr[0], 8); |
| 2103 | printf("\n\t Sender %s, P-Group %s", |
| 2104 | ipaddr_string(tptr), |
| 2105 | ipaddr_string(tptr+4)); |
| 2106 | break; |
| 2107 | |
| 2108 | case BGP_PMSI_TUNNEL_PIM_SSM: |
| 2109 | TCHECK2(tptr[0], 8); |
| 2110 | printf("\n\t Root-Node %s, P-Group %s", |
| 2111 | ipaddr_string(tptr), |
| 2112 | ipaddr_string(tptr+4)); |
| 2113 | break; |
| 2114 | case BGP_PMSI_TUNNEL_INGRESS: |
| 2115 | TCHECK2(tptr[0], 4); |
| 2116 | printf("\n\t Tunnel-Endpoint %s", |
| 2117 | ipaddr_string(tptr)); |
| 2118 | break; |
| 2119 | case BGP_PMSI_TUNNEL_LDP_P2MP: /* fall through */ |
| 2120 | case BGP_PMSI_TUNNEL_LDP_MP2MP: |
| 2121 | TCHECK2(tptr[0], 8); |
| 2122 | printf("\n\t Root-Node %s, LSP-ID 0x%08x", |
| 2123 | ipaddr_string(tptr), |
| 2124 | EXTRACT_32BITS(tptr+4)); |
| 2125 | break; |
| 2126 | case BGP_PMSI_TUNNEL_RSVP_P2MP: |
| 2127 | TCHECK2(tptr[0], 8); |
| 2128 | printf("\n\t Extended-Tunnel-ID %s, P2MP-ID 0x%08x", |
| 2129 | ipaddr_string(tptr), |
| 2130 | EXTRACT_32BITS(tptr+4)); |
| 2131 | break; |
| 2132 | default: |
| 2133 | if (vflag <= 1) { |
| 2134 | print_unknown_data(tptr,"\n\t ",tlen); |
| 2135 | } |
| 2136 | } |
| 2137 | break; |
| 2138 | } |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2139 | case BGPTYPE_ATTR_SET: |
| 2140 | TCHECK2(tptr[0], 4); |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2141 | if (len < 4) |
| 2142 | goto trunc; |
| 2143 | printf("\n\t Origin AS: %s", |
| 2144 | as_printf(astostr, sizeof(astostr), EXTRACT_32BITS(tptr))); |
| 2145 | tptr+=4; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2146 | len -=4; |
| 2147 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2148 | while (len) { |
| 2149 | u_int aflags, atype, alenlen, alen; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2150 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2151 | TCHECK2(tptr[0], 2); |
| 2152 | if (len < 2) |
| 2153 | goto trunc; |
| 2154 | aflags = *tptr; |
| 2155 | atype = *(tptr + 1); |
| 2156 | tptr += 2; |
| 2157 | len -= 2; |
| 2158 | alenlen = bgp_attr_lenlen(aflags, tptr); |
| 2159 | TCHECK2(tptr[0], alenlen); |
| 2160 | if (len < alenlen) |
| 2161 | goto trunc; |
| 2162 | alen = bgp_attr_len(aflags, tptr); |
| 2163 | tptr += alenlen; |
| 2164 | len -= alenlen; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2165 | |
| 2166 | printf("\n\t %s (%u), length: %u", |
| 2167 | tok2strbuf(bgp_attr_values, |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2168 | "Unknown Attribute", atype, |
| 2169 | tokbuf, sizeof(tokbuf)), |
| 2170 | atype, |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2171 | alen); |
| 2172 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2173 | if (aflags) { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2174 | printf(", Flags [%s%s%s%s", |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2175 | aflags & 0x80 ? "O" : "", |
| 2176 | aflags & 0x40 ? "T" : "", |
| 2177 | aflags & 0x20 ? "P" : "", |
| 2178 | aflags & 0x10 ? "E" : ""); |
| 2179 | if (aflags & 0xf) |
| 2180 | printf("+%x", aflags & 0xf); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2181 | printf("]: "); |
| 2182 | } |
| 2183 | /* FIXME check for recursion */ |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2184 | if (!bgp_attr_print(atype, tptr, alen)) |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2185 | return 0; |
| 2186 | tptr += alen; |
| 2187 | len -= alen; |
| 2188 | } |
| 2189 | break; |
| 2190 | |
| 2191 | |
| 2192 | default: |
| 2193 | TCHECK2(*pptr,len); |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2194 | printf("\n\t no Attribute %u decoder",atype); /* we have no decoder for the attribute */ |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2195 | if (vflag <= 1) |
| 2196 | print_unknown_data(pptr,"\n\t ",len); |
| 2197 | break; |
| 2198 | } |
| 2199 | if (vflag > 1 && len) { /* omit zero length attributes*/ |
| 2200 | TCHECK2(*pptr,len); |
| 2201 | print_unknown_data(pptr,"\n\t ",len); |
| 2202 | } |
| 2203 | return 1; |
| 2204 | |
| 2205 | trunc: |
| 2206 | return 0; |
| 2207 | } |
| 2208 | |
| 2209 | static void |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2210 | bgp_capabilities_print(const u_char *opt, int caps_len) |
| 2211 | { |
| 2212 | char tokbuf[TOKBUFSIZE]; |
| 2213 | char tokbuf2[TOKBUFSIZE]; |
| 2214 | int cap_type, cap_len, tcap_len, cap_offset; |
| 2215 | int i = 0; |
| 2216 | |
| 2217 | while (i < caps_len) { |
| 2218 | TCHECK2(opt[i], BGP_CAP_HEADER_SIZE); |
| 2219 | cap_type=opt[i]; |
| 2220 | cap_len=opt[i+1]; |
| 2221 | tcap_len=cap_len; |
| 2222 | printf("\n\t %s (%u), length: %u", |
| 2223 | tok2strbuf(bgp_capcode_values, "Unknown", |
| 2224 | cap_type, tokbuf, sizeof(tokbuf)), |
| 2225 | cap_type, |
| 2226 | cap_len); |
| 2227 | TCHECK2(opt[i+2], cap_len); |
| 2228 | switch (cap_type) { |
| 2229 | case BGP_CAPCODE_MP: |
| 2230 | printf("\n\t\tAFI %s (%u), SAFI %s (%u)", |
| 2231 | tok2strbuf(af_values, "Unknown", |
| 2232 | EXTRACT_16BITS(opt+i+2), |
| 2233 | tokbuf, sizeof(tokbuf)), |
| 2234 | EXTRACT_16BITS(opt+i+2), |
| 2235 | tok2strbuf(bgp_safi_values, "Unknown", |
| 2236 | opt[i+5], |
| 2237 | tokbuf, sizeof(tokbuf)), |
| 2238 | opt[i+5]); |
| 2239 | break; |
| 2240 | case BGP_CAPCODE_RESTART: |
| 2241 | printf("\n\t\tRestart Flags: [%s], Restart Time %us", |
| 2242 | ((opt[i+2])&0x80) ? "R" : "none", |
| 2243 | EXTRACT_16BITS(opt+i+2)&0xfff); |
| 2244 | tcap_len-=2; |
| 2245 | cap_offset=4; |
| 2246 | while(tcap_len>=4) { |
| 2247 | printf("\n\t\t AFI %s (%u), SAFI %s (%u), Forwarding state preserved: %s", |
| 2248 | tok2strbuf(af_values,"Unknown", |
| 2249 | EXTRACT_16BITS(opt+i+cap_offset), |
| 2250 | tokbuf, sizeof(tokbuf)), |
| 2251 | EXTRACT_16BITS(opt+i+cap_offset), |
| 2252 | tok2strbuf(bgp_safi_values,"Unknown", |
| 2253 | opt[i+cap_offset+2], |
| 2254 | tokbuf2, sizeof(tokbuf2)), |
| 2255 | opt[i+cap_offset+2], |
| 2256 | ((opt[i+cap_offset+3])&0x80) ? "yes" : "no" ); |
| 2257 | tcap_len-=4; |
| 2258 | cap_offset+=4; |
| 2259 | } |
| 2260 | break; |
| 2261 | case BGP_CAPCODE_RR: |
| 2262 | case BGP_CAPCODE_RR_CISCO: |
| 2263 | break; |
| 2264 | case BGP_CAPCODE_AS_NEW: |
| 2265 | |
| 2266 | /* |
| 2267 | * Extract the 4 byte AS number encoded. |
| 2268 | */ |
| 2269 | if (cap_len == 4) { |
| 2270 | printf("\n\t\t 4 Byte AS %s", |
| 2271 | as_printf(astostr, sizeof(astostr), |
| 2272 | EXTRACT_32BITS(opt + i + 2))); |
| 2273 | } |
| 2274 | break; |
| 2275 | default: |
| 2276 | printf("\n\t\tno decoder for Capability %u", |
| 2277 | cap_type); |
| 2278 | if (vflag <= 1) |
| 2279 | print_unknown_data(&opt[i+2],"\n\t\t",cap_len); |
| 2280 | break; |
| 2281 | } |
| 2282 | if (vflag > 1 && cap_len > 0) { |
| 2283 | print_unknown_data(&opt[i+2],"\n\t\t",cap_len); |
| 2284 | } |
| 2285 | i += BGP_CAP_HEADER_SIZE + cap_len; |
| 2286 | } |
| 2287 | return; |
| 2288 | |
| 2289 | trunc: |
| 2290 | printf("[|BGP]"); |
| 2291 | } |
| 2292 | |
| 2293 | static void |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2294 | bgp_open_print(const u_char *dat, int length) |
| 2295 | { |
| 2296 | struct bgp_open bgpo; |
| 2297 | struct bgp_opt bgpopt; |
| 2298 | const u_char *opt; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2299 | int i; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2300 | char tokbuf[TOKBUFSIZE]; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2301 | |
| 2302 | TCHECK2(dat[0], BGP_OPEN_SIZE); |
| 2303 | memcpy(&bgpo, dat, BGP_OPEN_SIZE); |
| 2304 | |
| 2305 | printf("\n\t Version %d, ", bgpo.bgpo_version); |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2306 | printf("my AS %s, ", |
| 2307 | as_printf(astostr, sizeof(astostr), ntohs(bgpo.bgpo_myas))); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2308 | printf("Holdtime %us, ", ntohs(bgpo.bgpo_holdtime)); |
| 2309 | printf("ID %s", getname((u_char *)&bgpo.bgpo_id)); |
| 2310 | printf("\n\t Optional parameters, length: %u", bgpo.bgpo_optlen); |
| 2311 | |
| 2312 | /* some little sanity checking */ |
| 2313 | if (length < bgpo.bgpo_optlen+BGP_OPEN_SIZE) |
| 2314 | return; |
| 2315 | |
| 2316 | /* ugly! */ |
| 2317 | opt = &((const struct bgp_open *)dat)->bgpo_optlen; |
| 2318 | opt++; |
| 2319 | |
| 2320 | i = 0; |
| 2321 | while (i < bgpo.bgpo_optlen) { |
| 2322 | TCHECK2(opt[i], BGP_OPT_SIZE); |
| 2323 | memcpy(&bgpopt, &opt[i], BGP_OPT_SIZE); |
| 2324 | if (i + 2 + bgpopt.bgpopt_len > bgpo.bgpo_optlen) { |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2325 | printf("\n\t Option %d, length: %u", bgpopt.bgpopt_type, bgpopt.bgpopt_len); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2326 | break; |
| 2327 | } |
| 2328 | |
| 2329 | printf("\n\t Option %s (%u), length: %u", |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2330 | tok2strbuf(bgp_opt_values,"Unknown", |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2331 | bgpopt.bgpopt_type, |
| 2332 | tokbuf, sizeof(tokbuf)), |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2333 | bgpopt.bgpopt_type, |
| 2334 | bgpopt.bgpopt_len); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2335 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2336 | /* now let's decode the options we know*/ |
| 2337 | switch(bgpopt.bgpopt_type) { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2338 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2339 | case BGP_OPT_CAP: |
| 2340 | bgp_capabilities_print(&opt[i+BGP_OPT_SIZE], |
| 2341 | bgpopt.bgpopt_len); |
| 2342 | break; |
| 2343 | |
| 2344 | case BGP_OPT_AUTH: |
| 2345 | default: |
| 2346 | printf("\n\t no decoder for option %u", |
| 2347 | bgpopt.bgpopt_type); |
| 2348 | break; |
| 2349 | } |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2350 | i += BGP_OPT_SIZE + bgpopt.bgpopt_len; |
| 2351 | } |
| 2352 | return; |
| 2353 | trunc: |
| 2354 | printf("[|BGP]"); |
| 2355 | } |
| 2356 | |
| 2357 | static void |
| 2358 | bgp_update_print(const u_char *dat, int length) |
| 2359 | { |
| 2360 | struct bgp bgp; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2361 | const u_char *p; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2362 | int withdrawn_routes_len; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2363 | int len; |
| 2364 | int i; |
| 2365 | char tokbuf[TOKBUFSIZE]; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2366 | #ifndef INET6 |
| 2367 | char buf[MAXHOSTNAMELEN + 100]; |
| 2368 | int wpfx; |
| 2369 | #endif |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2370 | |
| 2371 | TCHECK2(dat[0], BGP_SIZE); |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2372 | if (length < BGP_SIZE) |
| 2373 | goto trunc; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2374 | memcpy(&bgp, dat, BGP_SIZE); |
| 2375 | p = dat + BGP_SIZE; /*XXX*/ |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2376 | length -= BGP_SIZE; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2377 | |
| 2378 | /* Unfeasible routes */ |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2379 | TCHECK2(p[0], 2); |
| 2380 | if (length < 2) |
| 2381 | goto trunc; |
| 2382 | withdrawn_routes_len = EXTRACT_16BITS(p); |
| 2383 | p += 2; |
| 2384 | length -= 2; |
| 2385 | if (withdrawn_routes_len) { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2386 | /* |
| 2387 | * Without keeping state from the original NLRI message, |
| 2388 | * it's not possible to tell if this a v4 or v6 route, |
| 2389 | * so only try to decode it if we're not v6 enabled. |
| 2390 | */ |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2391 | TCHECK2(p[0], withdrawn_routes_len); |
| 2392 | if (length < withdrawn_routes_len) |
| 2393 | goto trunc; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2394 | #ifdef INET6 |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2395 | printf("\n\t Withdrawn routes: %d bytes", withdrawn_routes_len); |
| 2396 | p += withdrawn_routes_len; |
| 2397 | length -= withdrawn_routes_len; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2398 | #else |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2399 | if (withdrawn_routes_len < 2) |
| 2400 | goto trunc; |
| 2401 | length -= 2; |
| 2402 | withdrawn_routes_len -= 2; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2403 | |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2404 | |
| 2405 | printf("\n\t Withdrawn routes:"); |
| 2406 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2407 | while(withdrawn_routes_len > 0) { |
| 2408 | wpfx = decode_prefix4(p, withdrawn_routes_len, buf, sizeof(buf)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2409 | if (wpfx == -1) { |
| 2410 | printf("\n\t (illegal prefix length)"); |
| 2411 | break; |
| 2412 | } else if (wpfx == -2) |
| 2413 | goto trunc; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2414 | else if (wpfx == -3) |
| 2415 | goto trunc; /* bytes left, but not enough */ |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2416 | else { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2417 | printf("\n\t %s", buf); |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2418 | p += wpfx; |
| 2419 | length -= wpfx; |
| 2420 | withdrawn_routes_len -= wpfx; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2421 | } |
| 2422 | } |
| 2423 | #endif |
| 2424 | } |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2425 | |
| 2426 | TCHECK2(p[0], 2); |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2427 | if (length < 2) |
| 2428 | goto trunc; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2429 | len = EXTRACT_16BITS(p); |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2430 | p += 2; |
| 2431 | length -= 2; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2432 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2433 | if (withdrawn_routes_len == 0 && len == 0 && length == 0) { |
| 2434 | /* No withdrawn routes, no path attributes, no NLRI */ |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2435 | printf("\n\t End-of-Rib Marker (empty NLRI)"); |
| 2436 | return; |
| 2437 | } |
| 2438 | |
| 2439 | if (len) { |
| 2440 | /* do something more useful!*/ |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2441 | while (len) { |
| 2442 | int aflags, atype, alenlen, alen; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2443 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2444 | TCHECK2(p[0], 2); |
| 2445 | if (len < 2) |
| 2446 | goto trunc; |
| 2447 | if (length < 2) |
| 2448 | goto trunc; |
| 2449 | aflags = *p; |
| 2450 | atype = *(p + 1); |
| 2451 | p += 2; |
| 2452 | len -= 2; |
| 2453 | length -= 2; |
| 2454 | alenlen = bgp_attr_lenlen(aflags, p); |
| 2455 | TCHECK2(p[0], alenlen); |
| 2456 | if (len < alenlen) |
| 2457 | goto trunc; |
| 2458 | if (length < alenlen) |
| 2459 | goto trunc; |
| 2460 | alen = bgp_attr_len(aflags, p); |
| 2461 | p += alenlen; |
| 2462 | len -= alenlen; |
| 2463 | length -= alenlen; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2464 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2465 | printf("\n\t %s (%u), length: %u", |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2466 | tok2strbuf(bgp_attr_values, "Unknown Attribute", |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2467 | atype, |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2468 | tokbuf, sizeof(tokbuf)), |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2469 | atype, |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2470 | alen); |
| 2471 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2472 | if (aflags) { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2473 | printf(", Flags [%s%s%s%s", |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2474 | aflags & 0x80 ? "O" : "", |
| 2475 | aflags & 0x40 ? "T" : "", |
| 2476 | aflags & 0x20 ? "P" : "", |
| 2477 | aflags & 0x10 ? "E" : ""); |
| 2478 | if (aflags & 0xf) |
| 2479 | printf("+%x", aflags & 0xf); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2480 | printf("]: "); |
| 2481 | } |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2482 | if (len < alen) |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2483 | goto trunc; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2484 | if (length < alen) |
| 2485 | goto trunc; |
| 2486 | if (!bgp_attr_print(atype, p, alen)) |
| 2487 | goto trunc; |
| 2488 | p += alen; |
| 2489 | len -= alen; |
| 2490 | length -= alen; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2491 | } |
| 2492 | } |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2493 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2494 | if (length) { |
| 2495 | /* |
| 2496 | * XXX - what if they're using the "Advertisement of |
| 2497 | * Multiple Paths in BGP" feature: |
| 2498 | * |
| 2499 | * https://datatracker.ietf.org/doc/draft-ietf-idr-add-paths/ |
| 2500 | * |
| 2501 | * http://tools.ietf.org/html/draft-ietf-idr-add-paths-06 |
| 2502 | */ |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2503 | printf("\n\t Updated routes:"); |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2504 | while (length) { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2505 | char buf[MAXHOSTNAMELEN + 100]; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2506 | i = decode_prefix4(p, length, buf, sizeof(buf)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2507 | if (i == -1) { |
| 2508 | printf("\n\t (illegal prefix length)"); |
| 2509 | break; |
| 2510 | } else if (i == -2) |
| 2511 | goto trunc; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2512 | else if (i == -3) |
| 2513 | goto trunc; /* bytes left, but not enough */ |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2514 | else { |
| 2515 | printf("\n\t %s", buf); |
| 2516 | p += i; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2517 | length -= i; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 2518 | } |
| 2519 | } |
| 2520 | } |
| 2521 | return; |
| 2522 | trunc: |
| 2523 | printf("[|BGP]"); |
| 2524 | } |
| 2525 | |
| 2526 | static void |
| 2527 | bgp_notification_print(const u_char *dat, int length) |
| 2528 | { |
| 2529 | struct bgp_notification bgpn; |
| 2530 | const u_char *tptr; |
| 2531 | char tokbuf[TOKBUFSIZE]; |
| 2532 | char tokbuf2[TOKBUFSIZE]; |
| 2533 | |
| 2534 | TCHECK2(dat[0], BGP_NOTIFICATION_SIZE); |
| 2535 | memcpy(&bgpn, dat, BGP_NOTIFICATION_SIZE); |
| 2536 | |
| 2537 | /* some little sanity checking */ |
| 2538 | if (length<BGP_NOTIFICATION_SIZE) |
| 2539 | return; |
| 2540 | |
| 2541 | printf(", %s (%u)", |
| 2542 | tok2strbuf(bgp_notify_major_values, "Unknown Error", |
| 2543 | bgpn.bgpn_major, tokbuf, sizeof(tokbuf)), |
| 2544 | bgpn.bgpn_major); |
| 2545 | |
| 2546 | switch (bgpn.bgpn_major) { |
| 2547 | |
| 2548 | case BGP_NOTIFY_MAJOR_MSG: |
| 2549 | printf(", subcode %s (%u)", |
| 2550 | tok2strbuf(bgp_notify_minor_msg_values, "Unknown", |
| 2551 | bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)), |
| 2552 | bgpn.bgpn_minor); |
| 2553 | break; |
| 2554 | case BGP_NOTIFY_MAJOR_OPEN: |
| 2555 | printf(", subcode %s (%u)", |
| 2556 | tok2strbuf(bgp_notify_minor_open_values, "Unknown", |
| 2557 | bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)), |
| 2558 | bgpn.bgpn_minor); |
| 2559 | break; |
| 2560 | case BGP_NOTIFY_MAJOR_UPDATE: |
| 2561 | printf(", subcode %s (%u)", |
| 2562 | tok2strbuf(bgp_notify_minor_update_values, "Unknown", |
| 2563 | bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)), |
| 2564 | bgpn.bgpn_minor); |
| 2565 | break; |
| 2566 | case BGP_NOTIFY_MAJOR_CAP: |
| 2567 | printf(" subcode %s (%u)", |
| 2568 | tok2strbuf(bgp_notify_minor_cap_values, "Unknown", |
| 2569 | bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)), |
| 2570 | bgpn.bgpn_minor); |
| 2571 | case BGP_NOTIFY_MAJOR_CEASE: |
| 2572 | printf(", subcode %s (%u)", |
| 2573 | tok2strbuf(bgp_notify_minor_cease_values, "Unknown", |
| 2574 | bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)), |
| 2575 | bgpn.bgpn_minor); |
| 2576 | |
| 2577 | /* draft-ietf-idr-cease-subcode-02 mentions optionally 7 bytes |
| 2578 | * for the maxprefix subtype, which may contain AFI, SAFI and MAXPREFIXES |
| 2579 | */ |
| 2580 | if(bgpn.bgpn_minor == BGP_NOTIFY_MINOR_CEASE_MAXPRFX && length >= BGP_NOTIFICATION_SIZE + 7) { |
| 2581 | tptr = dat + BGP_NOTIFICATION_SIZE; |
| 2582 | TCHECK2(*tptr, 7); |
| 2583 | printf(", AFI %s (%u), SAFI %s (%u), Max Prefixes: %u", |
| 2584 | tok2strbuf(af_values, "Unknown", |
| 2585 | EXTRACT_16BITS(tptr), tokbuf, sizeof(tokbuf)), |
| 2586 | EXTRACT_16BITS(tptr), |
| 2587 | tok2strbuf(bgp_safi_values, "Unknown", *(tptr+2), |
| 2588 | tokbuf2, sizeof(tokbuf)), |
| 2589 | *(tptr+2), |
| 2590 | EXTRACT_32BITS(tptr+3)); |
| 2591 | } |
| 2592 | break; |
| 2593 | default: |
| 2594 | break; |
| 2595 | } |
| 2596 | |
| 2597 | return; |
| 2598 | trunc: |
| 2599 | printf("[|BGP]"); |
| 2600 | } |
| 2601 | |
| 2602 | static void |
| 2603 | bgp_route_refresh_print(const u_char *pptr, int len) { |
| 2604 | |
| 2605 | const struct bgp_route_refresh *bgp_route_refresh_header; |
| 2606 | char tokbuf[TOKBUFSIZE]; |
| 2607 | char tokbuf2[TOKBUFSIZE]; |
| 2608 | |
| 2609 | TCHECK2(pptr[0], BGP_ROUTE_REFRESH_SIZE); |
| 2610 | |
| 2611 | /* some little sanity checking */ |
| 2612 | if (len<BGP_ROUTE_REFRESH_SIZE) |
| 2613 | return; |
| 2614 | |
| 2615 | bgp_route_refresh_header = (const struct bgp_route_refresh *)pptr; |
| 2616 | |
| 2617 | printf("\n\t AFI %s (%u), SAFI %s (%u)", |
| 2618 | tok2strbuf(af_values,"Unknown", |
| 2619 | /* this stinks but the compiler pads the structure |
| 2620 | * weird */ |
| 2621 | EXTRACT_16BITS(&bgp_route_refresh_header->afi), |
| 2622 | tokbuf, sizeof(tokbuf)), |
| 2623 | EXTRACT_16BITS(&bgp_route_refresh_header->afi), |
| 2624 | tok2strbuf(bgp_safi_values,"Unknown", |
| 2625 | bgp_route_refresh_header->safi, |
| 2626 | tokbuf2, sizeof(tokbuf2)), |
| 2627 | bgp_route_refresh_header->safi); |
| 2628 | |
| 2629 | if (vflag > 1) { |
| 2630 | TCHECK2(*pptr, len); |
| 2631 | print_unknown_data(pptr,"\n\t ", len); |
| 2632 | } |
| 2633 | |
| 2634 | return; |
| 2635 | trunc: |
| 2636 | printf("[|BGP]"); |
| 2637 | } |
| 2638 | |
| 2639 | static int |
| 2640 | bgp_header_print(const u_char *dat, int length) |
| 2641 | { |
| 2642 | struct bgp bgp; |
| 2643 | char tokbuf[TOKBUFSIZE]; |
| 2644 | |
| 2645 | TCHECK2(dat[0], BGP_SIZE); |
| 2646 | memcpy(&bgp, dat, BGP_SIZE); |
| 2647 | printf("\n\t%s Message (%u), length: %u", |
| 2648 | tok2strbuf(bgp_msg_values, "Unknown", bgp.bgp_type, |
| 2649 | tokbuf, sizeof(tokbuf)), |
| 2650 | bgp.bgp_type, |
| 2651 | length); |
| 2652 | |
| 2653 | switch (bgp.bgp_type) { |
| 2654 | case BGP_OPEN: |
| 2655 | bgp_open_print(dat, length); |
| 2656 | break; |
| 2657 | case BGP_UPDATE: |
| 2658 | bgp_update_print(dat, length); |
| 2659 | break; |
| 2660 | case BGP_NOTIFICATION: |
| 2661 | bgp_notification_print(dat, length); |
| 2662 | break; |
| 2663 | case BGP_KEEPALIVE: |
| 2664 | break; |
| 2665 | case BGP_ROUTE_REFRESH: |
| 2666 | bgp_route_refresh_print(dat, length); |
| 2667 | break; |
| 2668 | default: |
| 2669 | /* we have no decoder for the BGP message */ |
| 2670 | TCHECK2(*dat, length); |
| 2671 | printf("\n\t no Message %u decoder",bgp.bgp_type); |
| 2672 | print_unknown_data(dat,"\n\t ",length); |
| 2673 | break; |
| 2674 | } |
| 2675 | return 1; |
| 2676 | trunc: |
| 2677 | printf("[|BGP]"); |
| 2678 | return 0; |
| 2679 | } |
| 2680 | |
| 2681 | void |
| 2682 | bgp_print(const u_char *dat, int length) |
| 2683 | { |
| 2684 | const u_char *p; |
| 2685 | const u_char *ep; |
| 2686 | const u_char *start; |
| 2687 | const u_char marker[] = { |
| 2688 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 2689 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 2690 | }; |
| 2691 | struct bgp bgp; |
| 2692 | u_int16_t hlen; |
| 2693 | char tokbuf[TOKBUFSIZE]; |
| 2694 | |
| 2695 | ep = dat + length; |
| 2696 | if (snapend < dat + length) |
| 2697 | ep = snapend; |
| 2698 | |
| 2699 | printf(": BGP, length: %u",length); |
| 2700 | |
| 2701 | if (vflag < 1) /* lets be less chatty */ |
| 2702 | return; |
| 2703 | |
| 2704 | p = dat; |
| 2705 | start = p; |
| 2706 | while (p < ep) { |
| 2707 | if (!TTEST2(p[0], 1)) |
| 2708 | break; |
| 2709 | if (p[0] != 0xff) { |
| 2710 | p++; |
| 2711 | continue; |
| 2712 | } |
| 2713 | |
| 2714 | if (!TTEST2(p[0], sizeof(marker))) |
| 2715 | break; |
| 2716 | if (memcmp(p, marker, sizeof(marker)) != 0) { |
| 2717 | p++; |
| 2718 | continue; |
| 2719 | } |
| 2720 | |
| 2721 | /* found BGP header */ |
| 2722 | TCHECK2(p[0], BGP_SIZE); /*XXX*/ |
| 2723 | memcpy(&bgp, p, BGP_SIZE); |
| 2724 | |
| 2725 | if (start != p) |
| 2726 | printf(" [|BGP]"); |
| 2727 | |
| 2728 | hlen = ntohs(bgp.bgp_len); |
| 2729 | if (hlen < BGP_SIZE) { |
| 2730 | printf("\n[|BGP Bogus header length %u < %u]", hlen, |
| 2731 | BGP_SIZE); |
| 2732 | break; |
| 2733 | } |
| 2734 | |
| 2735 | if (TTEST2(p[0], hlen)) { |
| 2736 | if (!bgp_header_print(p, hlen)) |
| 2737 | return; |
| 2738 | p += hlen; |
| 2739 | start = p; |
| 2740 | } else { |
| 2741 | printf("\n[|BGP %s]", |
| 2742 | tok2strbuf(bgp_msg_values, |
| 2743 | "Unknown Message Type", |
| 2744 | bgp.bgp_type, |
| 2745 | tokbuf, sizeof(tokbuf))); |
| 2746 | break; |
| 2747 | } |
| 2748 | } |
| 2749 | |
| 2750 | return; |
| 2751 | |
| 2752 | trunc: |
| 2753 | printf(" [|BGP]"); |
| 2754 | } |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 2755 | |
| 2756 | /* |
| 2757 | * Local Variables: |
| 2758 | * c-style: whitesmith |
| 2759 | * c-basic-offset: 4 |
| 2760 | * End: |
| 2761 | */ |