The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 1998-2004 Hannes Gredler <hannes@tcpdump.org> |
| 3 | * The TCPDUMP project |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that: (1) source code |
| 7 | * distributions retain the above copyright notice and this paragraph |
| 8 | * in its entirety, and (2) distributions including binary code include |
| 9 | * the above copyright notice and this paragraph in its entirety in |
| 10 | * the documentation or other materials provided with the distribution. |
| 11 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND |
| 12 | * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT |
| 13 | * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 14 | * FOR A PARTICULAR PURPOSE. |
| 15 | */ |
| 16 | |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 17 | #define NETDISSECT_REWORKED |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 18 | #ifdef HAVE_CONFIG_H |
| 19 | #include "config.h" |
| 20 | #endif |
| 21 | |
| 22 | #include <tcpdump-stdinc.h> |
| 23 | |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 24 | #include <string.h> |
| 25 | |
| 26 | #include "interface.h" |
| 27 | #include "extract.h" |
| 28 | #include "addrtoname.h" |
| 29 | |
| 30 | /* |
| 31 | * packet format documented at |
| 32 | * http://www.rhyshaden.com/eigrp.htm |
| 33 | */ |
| 34 | |
| 35 | struct eigrp_common_header { |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 36 | uint8_t version; |
| 37 | uint8_t opcode; |
| 38 | uint8_t checksum[2]; |
| 39 | uint8_t flags[4]; |
| 40 | uint8_t seq[4]; |
| 41 | uint8_t ack[4]; |
| 42 | uint8_t asn[4]; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 43 | }; |
| 44 | |
| 45 | #define EIGRP_VERSION 2 |
| 46 | |
| 47 | #define EIGRP_OPCODE_UPDATE 1 |
| 48 | #define EIGRP_OPCODE_QUERY 3 |
| 49 | #define EIGRP_OPCODE_REPLY 4 |
| 50 | #define EIGRP_OPCODE_HELLO 5 |
| 51 | #define EIGRP_OPCODE_IPXSAP 6 |
| 52 | #define EIGRP_OPCODE_PROBE 7 |
| 53 | |
| 54 | static const struct tok eigrp_opcode_values[] = { |
| 55 | { EIGRP_OPCODE_UPDATE, "Update" }, |
| 56 | { EIGRP_OPCODE_QUERY, "Query" }, |
| 57 | { EIGRP_OPCODE_REPLY, "Reply" }, |
| 58 | { EIGRP_OPCODE_HELLO, "Hello" }, |
| 59 | { EIGRP_OPCODE_IPXSAP, "IPX SAP" }, |
| 60 | { EIGRP_OPCODE_PROBE, "Probe" }, |
| 61 | { 0, NULL} |
| 62 | }; |
| 63 | |
| 64 | static const struct tok eigrp_common_header_flag_values[] = { |
| 65 | { 0x01, "Init" }, |
| 66 | { 0x02, "Conditionally Received" }, |
| 67 | { 0, NULL} |
| 68 | }; |
| 69 | |
| 70 | struct eigrp_tlv_header { |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 71 | uint8_t type[2]; |
| 72 | uint8_t length[2]; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 73 | }; |
| 74 | |
| 75 | #define EIGRP_TLV_GENERAL_PARM 0x0001 |
| 76 | #define EIGRP_TLV_AUTH 0x0002 |
| 77 | #define EIGRP_TLV_SEQ 0x0003 |
| 78 | #define EIGRP_TLV_SW_VERSION 0x0004 |
| 79 | #define EIGRP_TLV_MCAST_SEQ 0x0005 |
| 80 | #define EIGRP_TLV_IP_INT 0x0102 |
| 81 | #define EIGRP_TLV_IP_EXT 0x0103 |
| 82 | #define EIGRP_TLV_AT_INT 0x0202 |
| 83 | #define EIGRP_TLV_AT_EXT 0x0203 |
| 84 | #define EIGRP_TLV_AT_CABLE_SETUP 0x0204 |
| 85 | #define EIGRP_TLV_IPX_INT 0x0302 |
| 86 | #define EIGRP_TLV_IPX_EXT 0x0303 |
| 87 | |
| 88 | static const struct tok eigrp_tlv_values[] = { |
| 89 | { EIGRP_TLV_GENERAL_PARM, "General Parameters"}, |
| 90 | { EIGRP_TLV_AUTH, "Authentication"}, |
| 91 | { EIGRP_TLV_SEQ, "Sequence"}, |
| 92 | { EIGRP_TLV_SW_VERSION, "Software Version"}, |
| 93 | { EIGRP_TLV_MCAST_SEQ, "Next Multicast Sequence"}, |
| 94 | { EIGRP_TLV_IP_INT, "IP Internal routes"}, |
| 95 | { EIGRP_TLV_IP_EXT, "IP External routes"}, |
| 96 | { EIGRP_TLV_AT_INT, "AppleTalk Internal routes"}, |
| 97 | { EIGRP_TLV_AT_EXT, "AppleTalk External routes"}, |
| 98 | { EIGRP_TLV_AT_CABLE_SETUP, "AppleTalk Cable setup"}, |
| 99 | { EIGRP_TLV_IPX_INT, "IPX Internal routes"}, |
| 100 | { EIGRP_TLV_IPX_EXT, "IPX External routes"}, |
| 101 | { 0, NULL} |
| 102 | }; |
| 103 | |
| 104 | struct eigrp_tlv_general_parm_t { |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 105 | uint8_t k1; |
| 106 | uint8_t k2; |
| 107 | uint8_t k3; |
| 108 | uint8_t k4; |
| 109 | uint8_t k5; |
| 110 | uint8_t res; |
| 111 | uint8_t holdtime[2]; |
| 112 | }; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 113 | |
| 114 | struct eigrp_tlv_sw_version_t { |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 115 | uint8_t ios_major; |
| 116 | uint8_t ios_minor; |
| 117 | uint8_t eigrp_major; |
| 118 | uint8_t eigrp_minor; |
| 119 | }; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 120 | |
| 121 | struct eigrp_tlv_ip_int_t { |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 122 | uint8_t nexthop[4]; |
| 123 | uint8_t delay[4]; |
| 124 | uint8_t bandwidth[4]; |
| 125 | uint8_t mtu[3]; |
| 126 | uint8_t hopcount; |
| 127 | uint8_t reliability; |
| 128 | uint8_t load; |
| 129 | uint8_t reserved[2]; |
| 130 | uint8_t plen; |
| 131 | uint8_t destination; /* variable length [1-4] bytes encoding */ |
| 132 | }; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 133 | |
| 134 | struct eigrp_tlv_ip_ext_t { |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 135 | uint8_t nexthop[4]; |
| 136 | uint8_t origin_router[4]; |
| 137 | uint8_t origin_as[4]; |
| 138 | uint8_t tag[4]; |
| 139 | uint8_t metric[4]; |
| 140 | uint8_t reserved[2]; |
| 141 | uint8_t proto_id; |
| 142 | uint8_t flags; |
| 143 | uint8_t delay[4]; |
| 144 | uint8_t bandwidth[4]; |
| 145 | uint8_t mtu[3]; |
| 146 | uint8_t hopcount; |
| 147 | uint8_t reliability; |
| 148 | uint8_t load; |
| 149 | uint8_t reserved2[2]; |
| 150 | uint8_t plen; |
| 151 | uint8_t destination; /* variable length [1-4] bytes encoding */ |
| 152 | }; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 153 | |
| 154 | struct eigrp_tlv_at_cable_setup_t { |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 155 | uint8_t cable_start[2]; |
| 156 | uint8_t cable_end[2]; |
| 157 | uint8_t router_id[4]; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 158 | }; |
| 159 | |
| 160 | struct eigrp_tlv_at_int_t { |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 161 | uint8_t nexthop[4]; |
| 162 | uint8_t delay[4]; |
| 163 | uint8_t bandwidth[4]; |
| 164 | uint8_t mtu[3]; |
| 165 | uint8_t hopcount; |
| 166 | uint8_t reliability; |
| 167 | uint8_t load; |
| 168 | uint8_t reserved[2]; |
| 169 | uint8_t cable_start[2]; |
| 170 | uint8_t cable_end[2]; |
| 171 | }; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 172 | |
| 173 | struct eigrp_tlv_at_ext_t { |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 174 | uint8_t nexthop[4]; |
| 175 | uint8_t origin_router[4]; |
| 176 | uint8_t origin_as[4]; |
| 177 | uint8_t tag[4]; |
| 178 | uint8_t proto_id; |
| 179 | uint8_t flags; |
| 180 | uint8_t metric[2]; |
| 181 | uint8_t delay[4]; |
| 182 | uint8_t bandwidth[4]; |
| 183 | uint8_t mtu[3]; |
| 184 | uint8_t hopcount; |
| 185 | uint8_t reliability; |
| 186 | uint8_t load; |
| 187 | uint8_t reserved2[2]; |
| 188 | uint8_t cable_start[2]; |
| 189 | uint8_t cable_end[2]; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 190 | }; |
| 191 | |
| 192 | static const struct tok eigrp_ext_proto_id_values[] = { |
| 193 | { 0x01, "IGRP" }, |
| 194 | { 0x02, "EIGRP" }, |
| 195 | { 0x03, "Static" }, |
| 196 | { 0x04, "RIP" }, |
| 197 | { 0x05, "Hello" }, |
| 198 | { 0x06, "OSPF" }, |
| 199 | { 0x07, "IS-IS" }, |
| 200 | { 0x08, "EGP" }, |
| 201 | { 0x09, "BGP" }, |
| 202 | { 0x0a, "IDRP" }, |
| 203 | { 0x0b, "Connected" }, |
| 204 | { 0, NULL} |
| 205 | }; |
| 206 | |
| 207 | void |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 208 | eigrp_print(netdissect_options *ndo, register const u_char *pptr, register u_int len) |
| 209 | { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 210 | const struct eigrp_common_header *eigrp_com_header; |
| 211 | const struct eigrp_tlv_header *eigrp_tlv_header; |
| 212 | const u_char *tptr,*tlv_tptr; |
| 213 | u_int tlen,eigrp_tlv_len,eigrp_tlv_type,tlv_tlen, byte_length, bit_length; |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 214 | uint8_t prefix[4]; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 215 | |
| 216 | union { |
| 217 | const struct eigrp_tlv_general_parm_t *eigrp_tlv_general_parm; |
| 218 | const struct eigrp_tlv_sw_version_t *eigrp_tlv_sw_version; |
| 219 | const struct eigrp_tlv_ip_int_t *eigrp_tlv_ip_int; |
| 220 | const struct eigrp_tlv_ip_ext_t *eigrp_tlv_ip_ext; |
| 221 | const struct eigrp_tlv_at_cable_setup_t *eigrp_tlv_at_cable_setup; |
| 222 | const struct eigrp_tlv_at_int_t *eigrp_tlv_at_int; |
| 223 | const struct eigrp_tlv_at_ext_t *eigrp_tlv_at_ext; |
| 224 | } tlv_ptr; |
| 225 | |
| 226 | tptr=pptr; |
| 227 | eigrp_com_header = (const struct eigrp_common_header *)pptr; |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 228 | ND_TCHECK(*eigrp_com_header); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 229 | |
| 230 | /* |
| 231 | * Sanity checking of the header. |
| 232 | */ |
| 233 | if (eigrp_com_header->version != EIGRP_VERSION) { |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 234 | ND_PRINT((ndo, "EIGRP version %u packet not supported",eigrp_com_header->version)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 235 | return; |
| 236 | } |
| 237 | |
| 238 | /* in non-verbose mode just lets print the basic Message Type*/ |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 239 | if (ndo->ndo_vflag < 1) { |
| 240 | ND_PRINT((ndo, "EIGRP %s, length: %u", |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 241 | tok2str(eigrp_opcode_values, "unknown (%u)",eigrp_com_header->opcode), |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 242 | len)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 243 | return; |
| 244 | } |
| 245 | |
| 246 | /* ok they seem to want to know everything - lets fully decode it */ |
| 247 | |
| 248 | tlen=len-sizeof(struct eigrp_common_header); |
| 249 | |
| 250 | /* FIXME print other header info */ |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 251 | ND_PRINT((ndo, "\n\tEIGRP v%u, opcode: %s (%u), chksum: 0x%04x, Flags: [%s]\n\tseq: 0x%08x, ack: 0x%08x, AS: %u, length: %u", |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 252 | eigrp_com_header->version, |
| 253 | tok2str(eigrp_opcode_values, "unknown, type: %u",eigrp_com_header->opcode), |
| 254 | eigrp_com_header->opcode, |
| 255 | EXTRACT_16BITS(&eigrp_com_header->checksum), |
| 256 | tok2str(eigrp_common_header_flag_values, |
| 257 | "none", |
| 258 | EXTRACT_32BITS(&eigrp_com_header->flags)), |
| 259 | EXTRACT_32BITS(&eigrp_com_header->seq), |
| 260 | EXTRACT_32BITS(&eigrp_com_header->ack), |
| 261 | EXTRACT_32BITS(&eigrp_com_header->asn), |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 262 | tlen)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 263 | |
| 264 | tptr+=sizeof(const struct eigrp_common_header); |
| 265 | |
| 266 | while(tlen>0) { |
| 267 | /* did we capture enough for fully decoding the object header ? */ |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 268 | ND_TCHECK2(*tptr, sizeof(struct eigrp_tlv_header)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 269 | |
| 270 | eigrp_tlv_header = (const struct eigrp_tlv_header *)tptr; |
| 271 | eigrp_tlv_len=EXTRACT_16BITS(&eigrp_tlv_header->length); |
| 272 | eigrp_tlv_type=EXTRACT_16BITS(&eigrp_tlv_header->type); |
| 273 | |
| 274 | |
| 275 | if (eigrp_tlv_len < sizeof(struct eigrp_tlv_header) || |
| 276 | eigrp_tlv_len > tlen) { |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 277 | print_unknown_data(ndo,tptr+sizeof(struct eigrp_tlv_header),"\n\t ",tlen); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 278 | return; |
| 279 | } |
| 280 | |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 281 | ND_PRINT((ndo, "\n\t %s TLV (0x%04x), length: %u", |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 282 | tok2str(eigrp_tlv_values, |
| 283 | "Unknown", |
| 284 | eigrp_tlv_type), |
| 285 | eigrp_tlv_type, |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 286 | eigrp_tlv_len)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 287 | |
| 288 | tlv_tptr=tptr+sizeof(struct eigrp_tlv_header); |
| 289 | tlv_tlen=eigrp_tlv_len-sizeof(struct eigrp_tlv_header); |
| 290 | |
| 291 | /* did we capture enough for fully decoding the object ? */ |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 292 | ND_TCHECK2(*tptr, eigrp_tlv_len); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 293 | |
| 294 | switch(eigrp_tlv_type) { |
| 295 | |
| 296 | case EIGRP_TLV_GENERAL_PARM: |
| 297 | tlv_ptr.eigrp_tlv_general_parm = (const struct eigrp_tlv_general_parm_t *)tlv_tptr; |
| 298 | |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 299 | ND_PRINT((ndo, "\n\t holdtime: %us, k1 %u, k2 %u, k3 %u, k4 %u, k5 %u", |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 300 | EXTRACT_16BITS(tlv_ptr.eigrp_tlv_general_parm->holdtime), |
| 301 | tlv_ptr.eigrp_tlv_general_parm->k1, |
| 302 | tlv_ptr.eigrp_tlv_general_parm->k2, |
| 303 | tlv_ptr.eigrp_tlv_general_parm->k3, |
| 304 | tlv_ptr.eigrp_tlv_general_parm->k4, |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 305 | tlv_ptr.eigrp_tlv_general_parm->k5)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 306 | break; |
| 307 | |
| 308 | case EIGRP_TLV_SW_VERSION: |
| 309 | tlv_ptr.eigrp_tlv_sw_version = (const struct eigrp_tlv_sw_version_t *)tlv_tptr; |
| 310 | |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 311 | ND_PRINT((ndo, "\n\t IOS version: %u.%u, EIGRP version %u.%u", |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 312 | tlv_ptr.eigrp_tlv_sw_version->ios_major, |
| 313 | tlv_ptr.eigrp_tlv_sw_version->ios_minor, |
| 314 | tlv_ptr.eigrp_tlv_sw_version->eigrp_major, |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 315 | tlv_ptr.eigrp_tlv_sw_version->eigrp_minor)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 316 | break; |
| 317 | |
| 318 | case EIGRP_TLV_IP_INT: |
| 319 | tlv_ptr.eigrp_tlv_ip_int = (const struct eigrp_tlv_ip_int_t *)tlv_tptr; |
| 320 | |
| 321 | bit_length = tlv_ptr.eigrp_tlv_ip_int->plen; |
| 322 | if (bit_length > 32) { |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 323 | ND_PRINT((ndo, "\n\t illegal prefix length %u",bit_length)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 324 | break; |
| 325 | } |
| 326 | byte_length = (bit_length + 7) / 8; /* variable length encoding */ |
| 327 | memset(prefix, 0, 4); |
| 328 | memcpy(prefix,&tlv_ptr.eigrp_tlv_ip_int->destination,byte_length); |
| 329 | |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 330 | ND_PRINT((ndo, "\n\t IPv4 prefix: %15s/%u, nexthop: ", |
| 331 | ipaddr_string(ndo, prefix), |
| 332 | bit_length)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 333 | if (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_int->nexthop) == 0) |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 334 | ND_PRINT((ndo, "self")); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 335 | else |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 336 | ND_PRINT((ndo, "%s",ipaddr_string(ndo, &tlv_ptr.eigrp_tlv_ip_int->nexthop))); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 337 | |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 338 | ND_PRINT((ndo, "\n\t delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u", |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 339 | (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_int->delay)/100), |
| 340 | EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_int->bandwidth), |
| 341 | EXTRACT_24BITS(&tlv_ptr.eigrp_tlv_ip_int->mtu), |
| 342 | tlv_ptr.eigrp_tlv_ip_int->hopcount, |
| 343 | tlv_ptr.eigrp_tlv_ip_int->reliability, |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 344 | tlv_ptr.eigrp_tlv_ip_int->load)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 345 | break; |
| 346 | |
| 347 | case EIGRP_TLV_IP_EXT: |
| 348 | tlv_ptr.eigrp_tlv_ip_ext = (const struct eigrp_tlv_ip_ext_t *)tlv_tptr; |
| 349 | |
| 350 | bit_length = tlv_ptr.eigrp_tlv_ip_ext->plen; |
| 351 | if (bit_length > 32) { |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 352 | ND_PRINT((ndo, "\n\t illegal prefix length %u",bit_length)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 353 | break; |
| 354 | } |
| 355 | byte_length = (bit_length + 7) / 8; /* variable length encoding */ |
| 356 | memset(prefix, 0, 4); |
| 357 | memcpy(prefix,&tlv_ptr.eigrp_tlv_ip_ext->destination,byte_length); |
| 358 | |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 359 | ND_PRINT((ndo, "\n\t IPv4 prefix: %15s/%u, nexthop: ", |
| 360 | ipaddr_string(ndo, prefix), |
| 361 | bit_length)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 362 | if (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_ext->nexthop) == 0) |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 363 | ND_PRINT((ndo, "self")); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 364 | else |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 365 | ND_PRINT((ndo, "%s",ipaddr_string(ndo, &tlv_ptr.eigrp_tlv_ip_ext->nexthop))); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 366 | |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 367 | ND_PRINT((ndo, "\n\t origin-router %s, origin-as %u, origin-proto %s, flags [0x%02x], tag 0x%08x, metric %u", |
| 368 | ipaddr_string(ndo, tlv_ptr.eigrp_tlv_ip_ext->origin_router), |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 369 | EXTRACT_32BITS(tlv_ptr.eigrp_tlv_ip_ext->origin_as), |
| 370 | tok2str(eigrp_ext_proto_id_values,"unknown",tlv_ptr.eigrp_tlv_ip_ext->proto_id), |
| 371 | tlv_ptr.eigrp_tlv_ip_ext->flags, |
| 372 | EXTRACT_32BITS(tlv_ptr.eigrp_tlv_ip_ext->tag), |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 373 | EXTRACT_32BITS(tlv_ptr.eigrp_tlv_ip_ext->metric))); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 374 | |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 375 | ND_PRINT((ndo, "\n\t delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u", |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 376 | (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_ext->delay)/100), |
| 377 | EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_ext->bandwidth), |
| 378 | EXTRACT_24BITS(&tlv_ptr.eigrp_tlv_ip_ext->mtu), |
| 379 | tlv_ptr.eigrp_tlv_ip_ext->hopcount, |
| 380 | tlv_ptr.eigrp_tlv_ip_ext->reliability, |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 381 | tlv_ptr.eigrp_tlv_ip_ext->load)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 382 | break; |
| 383 | |
| 384 | case EIGRP_TLV_AT_CABLE_SETUP: |
| 385 | tlv_ptr.eigrp_tlv_at_cable_setup = (const struct eigrp_tlv_at_cable_setup_t *)tlv_tptr; |
| 386 | |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 387 | ND_PRINT((ndo, "\n\t Cable-range: %u-%u, Router-ID %u", |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 388 | EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_cable_setup->cable_start), |
| 389 | EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_cable_setup->cable_end), |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 390 | EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_cable_setup->router_id))); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 391 | break; |
| 392 | |
| 393 | case EIGRP_TLV_AT_INT: |
| 394 | tlv_ptr.eigrp_tlv_at_int = (const struct eigrp_tlv_at_int_t *)tlv_tptr; |
| 395 | |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 396 | ND_PRINT((ndo, "\n\t Cable-Range: %u-%u, nexthop: ", |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 397 | EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_int->cable_start), |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 398 | EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_int->cable_end))); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 399 | |
| 400 | if (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_int->nexthop) == 0) |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 401 | ND_PRINT((ndo, "self")); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 402 | else |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 403 | ND_PRINT((ndo, "%u.%u", |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 404 | EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_int->nexthop), |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 405 | EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_int->nexthop[2]))); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 406 | |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 407 | ND_PRINT((ndo, "\n\t delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u", |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 408 | (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_int->delay)/100), |
| 409 | EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_int->bandwidth), |
| 410 | EXTRACT_24BITS(&tlv_ptr.eigrp_tlv_at_int->mtu), |
| 411 | tlv_ptr.eigrp_tlv_at_int->hopcount, |
| 412 | tlv_ptr.eigrp_tlv_at_int->reliability, |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 413 | tlv_ptr.eigrp_tlv_at_int->load)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 414 | break; |
| 415 | |
| 416 | case EIGRP_TLV_AT_EXT: |
| 417 | tlv_ptr.eigrp_tlv_at_ext = (const struct eigrp_tlv_at_ext_t *)tlv_tptr; |
| 418 | |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 419 | ND_PRINT((ndo, "\n\t Cable-Range: %u-%u, nexthop: ", |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 420 | EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_ext->cable_start), |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 421 | EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_ext->cable_end))); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 422 | |
| 423 | if (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_ext->nexthop) == 0) |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 424 | ND_PRINT((ndo, "self")); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 425 | else |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 426 | ND_PRINT((ndo, "%u.%u", |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 427 | EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_ext->nexthop), |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 428 | EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_ext->nexthop[2]))); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 429 | |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 430 | ND_PRINT((ndo, "\n\t origin-router %u, origin-as %u, origin-proto %s, flags [0x%02x], tag 0x%08x, metric %u", |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 431 | EXTRACT_32BITS(tlv_ptr.eigrp_tlv_at_ext->origin_router), |
| 432 | EXTRACT_32BITS(tlv_ptr.eigrp_tlv_at_ext->origin_as), |
| 433 | tok2str(eigrp_ext_proto_id_values,"unknown",tlv_ptr.eigrp_tlv_at_ext->proto_id), |
| 434 | tlv_ptr.eigrp_tlv_at_ext->flags, |
| 435 | EXTRACT_32BITS(tlv_ptr.eigrp_tlv_at_ext->tag), |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 436 | EXTRACT_16BITS(tlv_ptr.eigrp_tlv_at_ext->metric))); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 437 | |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 438 | ND_PRINT((ndo, "\n\t delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u", |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 439 | (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_ext->delay)/100), |
| 440 | EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_ext->bandwidth), |
| 441 | EXTRACT_24BITS(&tlv_ptr.eigrp_tlv_at_ext->mtu), |
| 442 | tlv_ptr.eigrp_tlv_at_ext->hopcount, |
| 443 | tlv_ptr.eigrp_tlv_at_ext->reliability, |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 444 | tlv_ptr.eigrp_tlv_at_ext->load)); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 445 | break; |
| 446 | |
| 447 | /* |
| 448 | * FIXME those are the defined TLVs that lack a decoder |
| 449 | * you are welcome to contribute code ;-) |
| 450 | */ |
| 451 | |
| 452 | case EIGRP_TLV_AUTH: |
| 453 | case EIGRP_TLV_SEQ: |
| 454 | case EIGRP_TLV_MCAST_SEQ: |
| 455 | case EIGRP_TLV_IPX_INT: |
| 456 | case EIGRP_TLV_IPX_EXT: |
| 457 | |
| 458 | default: |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 459 | if (ndo->ndo_vflag <= 1) |
| 460 | print_unknown_data(ndo,tlv_tptr,"\n\t ",tlv_tlen); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 461 | break; |
| 462 | } |
| 463 | /* do we want to see an additionally hexdump ? */ |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 464 | if (ndo->ndo_vflag > 1) |
| 465 | print_unknown_data(ndo,tptr+sizeof(struct eigrp_tlv_header),"\n\t ", |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 466 | eigrp_tlv_len-sizeof(struct eigrp_tlv_header)); |
| 467 | |
| 468 | tptr+=eigrp_tlv_len; |
| 469 | tlen-=eigrp_tlv_len; |
| 470 | } |
| 471 | return; |
| 472 | trunc: |
Elliott Hughes | 892a68b | 2015-10-19 14:43:53 -0700 | [diff] [blame] | 473 | ND_PRINT((ndo, "\n\t\t packet exceeded snapshot")); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 474 | } |