The Tcpdump Group git mirrors - tcpdump/blob - print-olsr.c

   1 /*
   2  * Copyright (c) 1998-2007 The TCPDUMP project
   3  * Copyright (c) 2009  Florian Forster
   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  * Optimized Link State Protocl (OLSR) as per rfc3626
  17  *
  18  * Original code by Hannes Gredler <hannes@juniper.net>
  19  * IPv6 additions by Florian Forster <octo at verplant.org>
  20  */
  21
  22 #define NETDISSECT_REWORKED
  23 #ifdef HAVE_CONFIG_H
  24 #include "config.h"
  25 #endif
  26
  27 #include <tcpdump-stdinc.h>
  28
  29 #include "interface.h"
  30 #include "addrtoname.h"
  31 #include "extract.h"
  32
  33 /*
  34  * RFC 3626 common header
  35  *
  36  *  0                   1                   2                   3
  37  *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
  38  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  39  * |         Packet Length         |    Packet Sequence Number     |
  40  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  41  * |  Message Type |     Vtime     |         Message Size          |
  42  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  43  * |                      Originator Address                       |
  44  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  45  * |  Time To Live |   Hop Count   |    Message Sequence Number    |
  46  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  47  * |                                                               |
  48  * :                            MESSAGE                            :
  49  * |                                                               |
  50  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  51  * |  Message Type |     Vtime     |         Message Size          |
  52  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  53  * |                      Originator Address                       |
  54  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  55  * |  Time To Live |   Hop Count   |    Message Sequence Number    |
  56  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  57  * |                                                               |
  58  * :                            MESSAGE                            :
  59  * |                                                               |
  60  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  61  * :                                                               :
  62  */
  63
  64 struct olsr_common {
  65     u_int8_t packet_len[2];
  66     u_int8_t packet_seq[2];
  67 };
  68
  69 #define OLSR_HELLO_MSG         1 /* rfc3626 */
  70 #define OLSR_TC_MSG            2 /* rfc3626 */
  71 #define OLSR_MID_MSG           3 /* rfc3626 */
  72 #define OLSR_HNA_MSG           4 /* rfc3626 */
  73 #define OLSR_POWERINFO_MSG   128
  74 #define OLSR_NAMESERVICE_MSG 130
  75 #define OLSR_HELLO_LQ_MSG    201 /* LQ extensions olsr.org */
  76 #define OLSR_TC_LQ_MSG       202 /* LQ extensions olsr.org */
  77
  78 static const struct tok olsr_msg_values[] = {
  79     { OLSR_HELLO_MSG, "Hello" },
  80     { OLSR_TC_MSG, "TC" },
  81     { OLSR_MID_MSG, "MID" },
  82     { OLSR_HNA_MSG, "HNA" },
  83     { OLSR_POWERINFO_MSG, "Powerinfo" },
  84     { OLSR_NAMESERVICE_MSG, "Nameservice" },
  85     { OLSR_HELLO_LQ_MSG, "Hello-LQ" },
  86     { OLSR_TC_LQ_MSG, "TC-LQ" },
  87     { 0, NULL}
  88 };
  89
  90 struct olsr_msg4 {
  91     u_int8_t msg_type;
  92     u_int8_t vtime;
  93     u_int8_t msg_len[2];
  94     u_int8_t originator[4];
  95     u_int8_t ttl;
  96     u_int8_t hopcount;
  97     u_int8_t msg_seq[2];
  98 };
  99
 100 struct olsr_msg6 {
 101     u_int8_t msg_type;
 102     u_int8_t vtime;
 103     u_int8_t msg_len[2];
 104     u_int8_t originator[16];
 105     u_int8_t ttl;
 106     u_int8_t hopcount;
 107     u_int8_t msg_seq[2];
 108 };
 109
 110 struct olsr_hello {
 111     u_int8_t res[2];
 112     u_int8_t htime;
 113     u_int8_t will;
 114 };
 115
 116 struct olsr_hello_link {
 117     u_int8_t link_code;
 118     u_int8_t res;
 119     u_int8_t len[2];
 120 };
 121
 122 struct olsr_tc {
 123     u_int8_t ans_seq[2];
 124     u_int8_t res[2];
 125 };
 126
 127 struct olsr_hna4 {
 128     u_int8_t network[4];
 129     u_int8_t mask[4];
 130 };
 131
 132 struct olsr_hna6 {
 133     u_int8_t network[16];
 134     u_int8_t mask[16];
 135 };
 136
 137
 138 #define OLSR_EXTRACT_LINK_TYPE(link_code) (link_code & 0x3)
 139 #define OLSR_EXTRACT_NEIGHBOR_TYPE(link_code) (link_code >> 2)
 140
 141 static const struct tok olsr_link_type_values[] = {
 142     { 0, "Unspecified" },
 143     { 1, "Asymmetric" },
 144     { 2, "Symmetric" },
 145     { 3, "Lost" },
 146     { 0, NULL}
 147 };
 148
 149 static const struct tok olsr_neighbor_type_values[] = {
 150     { 0, "Not-Neighbor" },
 151     { 1, "Symmetric" },
 152     { 2, "Symmetric-MPR" },
 153     { 0, NULL}
 154 };
 155
 156 struct olsr_lq_neighbor4 {
 157     u_int8_t neighbor[4];
 158     u_int8_t link_quality;
 159     u_int8_t neighbor_link_quality;
 160     u_int8_t res[2];
 161 };
 162
 163 struct olsr_lq_neighbor6 {
 164     u_int8_t neighbor[16];
 165     u_int8_t link_quality;
 166     u_int8_t neighbor_link_quality;
 167     u_int8_t res[2];
 168 };
 169
 170 /*
 171  * macro to convert the 8-bit mantissa/exponent to a double float
 172  * taken from olsr.org.
 173  */
 174 #define VTIME_SCALE_FACTOR    0.0625
 175 #define ME_TO_DOUBLE(me) \
 176   (double)(VTIME_SCALE_FACTOR*(1+(double)(me>>4)/16)*(double)(1<<(me&0x0F)))
 177
 178 /*
 179  * print a neighbor list with LQ extensions.
 180  */
 181 static void
 182 olsr_print_lq_neighbor4(netdissect_options *ndo,
 183                         const u_char *msg_data, u_int hello_len)
 184 {
 185     struct olsr_lq_neighbor4 *lq_neighbor;
 186
 187     while (hello_len >= sizeof(struct olsr_lq_neighbor4)) {
 188
 189         lq_neighbor = (struct olsr_lq_neighbor4 *)msg_data;
 190
 191         ND_PRINT((ndo, "\n\t      neighbor %s, link-quality %.2lf%%"
 192                ", neighbor-link-quality %.2lf%%",
 193                ipaddr_string(ndo, lq_neighbor->neighbor),
 194                ((double)lq_neighbor->link_quality/2.55),
 195                ((double)lq_neighbor->neighbor_link_quality/2.55)));
 196
 197         msg_data += sizeof(struct olsr_lq_neighbor4);
 198         hello_len -= sizeof(struct olsr_lq_neighbor4);
 199     }
 200 }
 201
 202 #if INET6
 203 static void
 204 olsr_print_lq_neighbor6(netdissect_options *ndo,
 205                         const u_char *msg_data, u_int hello_len)
 206 {
 207     struct olsr_lq_neighbor6 *lq_neighbor;
 208
 209     while (hello_len >= sizeof(struct olsr_lq_neighbor6)) {
 210
 211         lq_neighbor = (struct olsr_lq_neighbor6 *)msg_data;
 212
 213         ND_PRINT((ndo, "\n\t      neighbor %s, link-quality %.2lf%%"
 214                ", neighbor-link-quality %.2lf%%",
 215                ip6addr_string(ndo, lq_neighbor->neighbor),
 216                ((double)lq_neighbor->link_quality/2.55),
 217                ((double)lq_neighbor->neighbor_link_quality/2.55)));
 218
 219         msg_data += sizeof(struct olsr_lq_neighbor6);
 220         hello_len -= sizeof(struct olsr_lq_neighbor6);
 221     }
 222 }
 223 #endif /* INET6 */
 224
 225 /*
 226  * print a neighbor list.
 227  */
 228 static void
 229 olsr_print_neighbor(netdissect_options *ndo,
 230                     const u_char *msg_data, u_int hello_len)
 231 {
 232     int neighbor;
 233
 234     ND_PRINT((ndo, "\n\t      neighbor\n\t\t"));
 235     neighbor = 1;
 236
 237     while (hello_len >= sizeof(struct in_addr)) {
 238
 239         /* print 4 neighbors per line */
 240
 241         ND_PRINT((ndo, "%s%s", ipaddr_string(ndo, msg_data),
 242                neighbor % 4 == 0 ? "\n\t\t" : " "));
 243
 244         msg_data += sizeof(struct in_addr);
 245         hello_len -= sizeof(struct in_addr);
 246     }
 247 }
 248
 249
 250 void
 251 olsr_print(netdissect_options *ndo,
 252            const u_char *pptr, u_int length, int is_ipv6)
 253 {
 254     union {
 255         const struct olsr_common *common;
 256         const struct olsr_msg4 *msg4;
 257         const struct olsr_msg6 *msg6;
 258         const struct olsr_hello *hello;
 259         const struct olsr_hello_link *hello_link;
 260         const struct olsr_tc *tc;
 261         const struct olsr_hna4 *hna;
 262     } ptr;
 263
 264     u_int msg_type, msg_len, msg_tlen, hello_len;
 265     u_int16_t name_entry_type, name_entry_len;
 266     u_int name_entry_padding;
 267     u_int8_t link_type, neighbor_type;
 268     const u_char *tptr, *msg_data;
 269
 270     tptr = pptr;
 271
 272     if (length < sizeof(struct olsr_common)) {
 273         goto trunc;
 274     }
 275
 276     if (!ND_TTEST2(*tptr, sizeof(struct olsr_common))) {
 277         goto trunc;
 278     }
 279
 280     ptr.common = (struct olsr_common *)tptr;
 281     length = min(length, EXTRACT_16BITS(ptr.common->packet_len));
 282
 283     ND_PRINT((ndo, "OLSRv%i, seq 0x%04x, length %u",
 284             (is_ipv6 == 0) ? 4 : 6,
 285             EXTRACT_16BITS(ptr.common->packet_seq),
 286             length));
 287
 288     tptr += sizeof(struct olsr_common);
 289
 290     /*
 291      * In non-verbose mode, just print version.
 292      */
 293     if (ndo->ndo_vflag < 1) {
 294         return;
 295     }
 296
 297     while (tptr < (pptr+length)) {
 298         union
 299         {
 300             struct olsr_msg4 *v4;
 301             struct olsr_msg6 *v6;
 302         } msgptr;
 303         int msg_len_valid = 0;
 304
 305         if (!ND_TTEST2(*tptr, sizeof(struct olsr_msg4)))
 306             goto trunc;
 307
 308 #if INET6
 309         if (is_ipv6)
 310         {
 311             msgptr.v6 = (struct olsr_msg6 *) tptr;
 312             msg_type = msgptr.v6->msg_type;
 313             msg_len = EXTRACT_16BITS(msgptr.v6->msg_len);
 314             if ((msg_len >= sizeof (struct olsr_msg6))
 315                     && (msg_len <= length))
 316                 msg_len_valid = 1;
 317
 318             /* infinite loop check */
 319             if (msg_type == 0 || msg_len == 0) {
 320                 return;
 321             }
 322
 323             ND_PRINT((ndo, "\n\t%s Message (%#04x), originator %s, ttl %u, hop %u"
 324                     "\n\t  vtime %.3lfs, msg-seq 0x%04x, length %u%s",
 325                     tok2str(olsr_msg_values, "Unknown", msg_type),
 326                     msg_type, ip6addr_string(ndo, msgptr.v6->originator),
 327                     msgptr.v6->ttl,
 328                     msgptr.v6->hopcount,
 329                     ME_TO_DOUBLE(msgptr.v6->vtime),
 330                     EXTRACT_16BITS(msgptr.v6->msg_seq),
 331                     msg_len, (msg_len_valid == 0) ? " (invalid)" : ""));
 332
 333             msg_tlen = msg_len - sizeof(struct olsr_msg6);
 334             msg_data = tptr + sizeof(struct olsr_msg6);
 335         }
 336         else /* (!is_ipv6) */
 337 #endif /* INET6 */
 338         {
 339             msgptr.v4 = (struct olsr_msg4 *) tptr;
 340             msg_type = msgptr.v4->msg_type;
 341             msg_len = EXTRACT_16BITS(msgptr.v4->msg_len);
 342             if ((msg_len >= sizeof (struct olsr_msg4))
 343                     && (msg_len <= length))
 344                 msg_len_valid = 1;
 345
 346             /* infinite loop check */
 347             if (msg_type == 0 || msg_len == 0) {
 348                 return;
 349             }
 350
 351             ND_PRINT((ndo, "\n\t%s Message (%#04x), originator %s, ttl %u, hop %u"
 352                     "\n\t  vtime %.3lfs, msg-seq 0x%04x, length %u%s",
 353                     tok2str(olsr_msg_values, "Unknown", msg_type),
 354                     msg_type, ipaddr_string(ndo, msgptr.v4->originator),
 355                     msgptr.v4->ttl,
 356                     msgptr.v4->hopcount,
 357                     ME_TO_DOUBLE(msgptr.v4->vtime),
 358                     EXTRACT_16BITS(msgptr.v4->msg_seq),
 359                     msg_len, (msg_len_valid == 0) ? " (invalid)" : ""));
 360
 361             msg_tlen = msg_len - sizeof(struct olsr_msg4);
 362             msg_data = tptr + sizeof(struct olsr_msg4);
 363         }
 364
 365         switch (msg_type) {
 366         case OLSR_HELLO_MSG:
 367         case OLSR_HELLO_LQ_MSG:
 368             if (!ND_TTEST2(*msg_data, sizeof(struct olsr_hello)))
 369                 goto trunc;
 370
 371             ptr.hello = (struct olsr_hello *)msg_data;
 372             ND_PRINT((ndo, "\n\t  hello-time %.3lfs, MPR willingness %u",
 373                    ME_TO_DOUBLE(ptr.hello->htime), ptr.hello->will));
 374             msg_data += sizeof(struct olsr_hello);
 375             msg_tlen -= sizeof(struct olsr_hello);
 376
 377             while (msg_tlen >= sizeof(struct olsr_hello_link)) {
 378                 int hello_len_valid = 0;
 379
 380                 /*
 381                  * link-type.
 382                  */
 383                 if (!ND_TTEST2(*msg_data, sizeof(struct olsr_hello_link)))
 384                     goto trunc;
 385
 386                 ptr.hello_link = (struct olsr_hello_link *)msg_data;
 387
 388                 hello_len = EXTRACT_16BITS(ptr.hello_link->len);
 389                 link_type = OLSR_EXTRACT_LINK_TYPE(ptr.hello_link->link_code);
 390                 neighbor_type = OLSR_EXTRACT_NEIGHBOR_TYPE(ptr.hello_link->link_code);
 391
 392                 if ((hello_len <= msg_tlen)
 393                         && (hello_len >= sizeof(struct olsr_hello_link)))
 394                     hello_len_valid = 1;
 395
 396                 ND_PRINT((ndo, "\n\t    link-type %s, neighbor-type %s, len %u%s",
 397                        tok2str(olsr_link_type_values, "Unknown", link_type),
 398                        tok2str(olsr_neighbor_type_values, "Unknown", neighbor_type),
 399                        hello_len,
 400                        (hello_len_valid == 0) ? " (invalid)" : ""));
 401
 402                 if (hello_len_valid == 0)
 403                     break;
 404
 405                 msg_data += sizeof(struct olsr_hello_link);
 406                 msg_tlen -= sizeof(struct olsr_hello_link);
 407                 hello_len -= sizeof(struct olsr_hello_link);
 408
 409                 if (msg_type == OLSR_HELLO_MSG) {
 410                     olsr_print_neighbor(ndo, msg_data, hello_len);
 411                 } else {
 412 #if INET6
 413                     if (is_ipv6)
 414                         olsr_print_lq_neighbor6(ndo, msg_data, hello_len);
 415                     else
 416 #endif
 417                         olsr_print_lq_neighbor4(ndo, msg_data, hello_len);
 418                 }
 419
 420                 msg_data += hello_len;
 421                 msg_tlen -= hello_len;
 422             }
 423             break;
 424
 425         case OLSR_TC_MSG:
 426         case OLSR_TC_LQ_MSG:
 427             if (!ND_TTEST2(*msg_data, sizeof(struct olsr_tc)))
 428                 goto trunc;
 429
 430             ptr.tc = (struct olsr_tc *)msg_data;
 431             ND_PRINT((ndo, "\n\t    advertised neighbor seq 0x%04x",
 432                    EXTRACT_16BITS(ptr.tc->ans_seq)));
 433             msg_data += sizeof(struct olsr_tc);
 434             msg_tlen -= sizeof(struct olsr_tc);
 435
 436             if (msg_type == OLSR_TC_MSG) {
 437                 olsr_print_neighbor(ndo, msg_data, msg_tlen);
 438             } else {
 439 #if INET6
 440                 if (is_ipv6)
 441                     olsr_print_lq_neighbor6(ndo, msg_data, msg_tlen);
 442                 else
 443 #endif
 444                     olsr_print_lq_neighbor4(ndo, msg_data, msg_tlen);
 445             }
 446             break;
 447
 448         case OLSR_MID_MSG:
 449         {
 450             size_t addr_size = sizeof(struct in_addr);
 451
 452 #if INET6
 453             if (is_ipv6)
 454                 addr_size = sizeof(struct in6_addr);
 455 #endif
 456
 457             while (msg_tlen >= addr_size) {
 458                 if (!ND_TTEST2(*msg_data, addr_size))
 459                     goto trunc;
 460 #if INET6
 461                 ND_PRINT((ndo, "\n\t  interface address %s",
 462                         is_ipv6 ? ip6addr_string(ndo, msg_data) :
 463                         ipaddr_string(ndo, msg_data)));
 464 #else
 465                 ND_PRINT((ndo, "\n\t  interface address %s",
 466                         ipaddr_string(ndo, msg_data)));
 467 #endif
 468
 469                 msg_data += addr_size;
 470                 msg_tlen -= addr_size;
 471             }
 472             break;
 473         }
 474
 475         case OLSR_HNA_MSG:
 476             ND_PRINT((ndo, "\n\t  Advertised networks (total %u)",
 477                     (unsigned int) (msg_tlen / sizeof(struct olsr_hna6))));
 478 #if INET6
 479             if (is_ipv6)
 480             {
 481                 int i = 0;
 482                 while (msg_tlen >= sizeof(struct olsr_hna6)) {
 483                     struct olsr_hna6 *hna6;
 484
 485                     if (!ND_TTEST2(*msg_data, sizeof(struct olsr_hna6)))
 486                         goto trunc;
 487
 488                     hna6 = (struct olsr_hna6 *)msg_data;
 489
 490                     ND_PRINT((ndo, "\n\t    #%i: %s/%u",
 491                             i, ip6addr_string(ndo, hna6->network),
 492                             mask62plen (hna6->mask)));
 493
 494                     msg_data += sizeof(struct olsr_hna6);
 495                     msg_tlen -= sizeof(struct olsr_hna6);
 496                 }
 497             }
 498             else
 499 #endif
 500             {
 501                 int col = 0;
 502                 while (msg_tlen >= sizeof(struct olsr_hna4)) {
 503                     if (!ND_TTEST2(*msg_data, sizeof(struct olsr_hna4)))
 504                         goto trunc;
 505
 506                     ptr.hna = (struct olsr_hna4 *)msg_data;
 507
 508                     /* print 4 prefixes per line */
 509                     ND_PRINT((ndo, "%s%s/%u",
 510                             col == 0 ? "\n\t    " : ", ",
 511                             ipaddr_string(ndo, ptr.hna->network),
 512                             mask2plen(EXTRACT_32BITS(ptr.hna->mask))));
 513
 514                     msg_data += sizeof(struct olsr_hna4);
 515                     msg_tlen -= sizeof(struct olsr_hna4);
 516
 517                     col = (col + 1) % 4;
 518                 }
 519             }
 520             break;
 521
 522         case OLSR_NAMESERVICE_MSG:
 523         {
 524             u_int name_entries = EXTRACT_16BITS(msg_data+2);
 525             u_int addr_size = 4;
 526             int name_entries_valid = 0;
 527             u_int i;
 528
 529             if (is_ipv6)
 530                 addr_size = 16;
 531
 532             if ((name_entries > 0)
 533                     && ((name_entries * (4 + addr_size)) <= msg_tlen))
 534                 name_entries_valid = 1;
 535
 536             if (msg_tlen < 4)
 537                 goto trunc;
 538             if (!ND_TTEST2(*msg_data, 4))
 539                 goto trunc;
 540
 541             ND_PRINT((ndo, "\n\t  Version %u, Entries %u%s",
 542                    EXTRACT_16BITS(msg_data),
 543                    name_entries, (name_entries_valid == 0) ? " (invalid)" : ""));
 544
 545             if (name_entries_valid == 0)
 546                 break;
 547
 548             msg_data += 4;
 549             msg_tlen -= 4;
 550
 551             for (i = 0; i < name_entries; i++) {
 552                 int name_entry_len_valid = 0;
 553
 554                 if (msg_tlen < 4)
 555                     break;
 556                 if (!ND_TTEST2(*msg_data, 4))
 557                     goto trunc;
 558
 559                 name_entry_type = EXTRACT_16BITS(msg_data);
 560                 name_entry_len = EXTRACT_16BITS(msg_data+2);
 561
 562                 msg_data += 4;
 563                 msg_tlen -= 4;
 564
 565                 if ((name_entry_len > 0) && ((addr_size + name_entry_len) <= msg_tlen))
 566                     name_entry_len_valid = 1;
 567
 568                 ND_PRINT((ndo, "\n\t    #%u: type %#06x, length %u%s",
 569                         (unsigned int) i, name_entry_type,
 570                         name_entry_len, (name_entry_len_valid == 0) ? " (invalid)" : ""));
 571
 572                 if (name_entry_len_valid == 0)
 573                     break;
 574
 575                 /* 32-bit alignment */
 576                 name_entry_padding = 0;
 577                 if (name_entry_len%4 != 0)
 578                     name_entry_padding = 4-(name_entry_len%4);
 579
 580                 if (msg_tlen < addr_size + name_entry_len + name_entry_padding)
 581                     goto trunc;
 582
 583                 if (!ND_TTEST2(*msg_data, addr_size + name_entry_len + name_entry_padding))
 584                     goto trunc;
 585
 586 #if INET6
 587                 if (is_ipv6)
 588                     ND_PRINT((ndo, ", address %s, name \"",
 589                             ip6addr_string(ndo, msg_data)));
 590                 else
 591 #endif
 592                     ND_PRINT((ndo, ", address %s, name \"",
 593                             ipaddr_string(ndo, msg_data)));
 594                 fn_printn(msg_data + addr_size, name_entry_len, NULL);
 595                 ND_PRINT((ndo, "\""));
 596
 597                 msg_data += addr_size + name_entry_len + name_entry_padding;
 598                 msg_tlen -= addr_size + name_entry_len + name_entry_padding;
 599             } /* for (i = 0; i < name_entries; i++) */
 600             break;
 601         } /* case OLSR_NAMESERVICE_MSG */
 602
 603             /*
 604              * FIXME those are the defined messages that lack a decoder
 605              * you are welcome to contribute code ;-)
 606              */
 607         case OLSR_POWERINFO_MSG:
 608         default:
 609             print_unknown_data(ndo, msg_data, "\n\t    ", msg_tlen);
 610             break;
 611         } /* switch (msg_type) */
 612         tptr += msg_len;
 613     } /* while (tptr < (pptr+length)) */
 614
 615     return;
 616
 617  trunc:
 618     ND_PRINT((ndo, "[|olsr]"));
 619 }
 620
 621 /*
 622  * Local Variables:
 623  * c-style: whitesmith
 624  * c-basic-offset: 4
 625  * End:
 626  */