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 #ifdef HAVE_CONFIG_H
  23 #include "config.h"
  24 #endif
  25
  26 #include <tcpdump-stdinc.h>
  27
  28 #include <stdio.h>
  29 #include <string.h>
  30
  31 #include "interface.h"
  32 #include "addrtoname.h"
  33 #include "extract.h"
  34 #include "ip.h"
  35
  36 /*
  37  * RFC 3626 common header
  38  *
  39  *  0                   1                   2                   3
  40  *  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
  41  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  42  * |         Packet Length         |    Packet Sequence Number     |
  43  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  44  * |  Message Type |     Vtime     |         Message Size          |
  45  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  46  * |                      Originator Address                       |
  47  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  48  * |  Time To Live |   Hop Count   |    Message Sequence Number    |
  49  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  50  * |                                                               |
  51  * :                            MESSAGE                            :
  52  * |                                                               |
  53  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  54  * |  Message Type |     Vtime     |         Message Size          |
  55  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  56  * |                      Originator Address                       |
  57  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  58  * |  Time To Live |   Hop Count   |    Message Sequence Number    |
  59  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  60  * |                                                               |
  61  * :                            MESSAGE                            :
  62  * |                                                               |
  63  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  64  * :                                                               :
  65  */
  66
  67 struct olsr_common {
  68     u_int8_t packet_len[2];
  69     u_int8_t packet_seq[2];
  70 };
  71
  72 #define OLSR_HELLO_MSG         1 /* rfc3626 */
  73 #define OLSR_TC_MSG            2 /* rfc3626 */
  74 #define OLSR_MID_MSG           3 /* rfc3626 */
  75 #define OLSR_HNA_MSG           4 /* rfc3626 */
  76 #define OLSR_POWERINFO_MSG   128
  77 #define OLSR_NAMESERVICE_MSG 130
  78 #define OLSR_HELLO_LQ_MSG    201 /* LQ extensions olsr.org */
  79 #define OLSR_TC_LQ_MSG       202 /* LQ extensions olsr.org */
  80
  81 static struct tok olsr_msg_values[] = {
  82     { OLSR_HELLO_MSG, "Hello" },
  83     { OLSR_TC_MSG, "TC" },
  84     { OLSR_MID_MSG, "MID" },
  85     { OLSR_HNA_MSG, "HNA" },
  86     { OLSR_POWERINFO_MSG, "Powerinfo" },
  87     { OLSR_NAMESERVICE_MSG, "Nameservice" },
  88     { OLSR_HELLO_LQ_MSG, "Hello-LQ" },
  89     { OLSR_TC_LQ_MSG, "TC-LQ" },
  90     { 0, NULL}
  91 };
  92
  93 struct olsr_msg4 {
  94     u_int8_t msg_type;
  95     u_int8_t vtime;
  96     u_int8_t msg_len[2];
  97     u_int8_t originator[4];
  98     u_int8_t ttl;
  99     u_int8_t hopcount;
 100     u_int8_t msg_seq[2];
 101 };
 102
 103 struct olsr_msg6 {
 104     u_int8_t msg_type;
 105     u_int8_t vtime;
 106     u_int8_t msg_len[2];
 107     u_int8_t originator[16];
 108     u_int8_t ttl;
 109     u_int8_t hopcount;
 110     u_int8_t msg_seq[2];
 111 };
 112
 113 struct olsr_hello {
 114     u_int8_t res[2];
 115     u_int8_t htime;
 116     u_int8_t will;
 117 };
 118
 119 struct olsr_hello_link {
 120     u_int8_t link_code;
 121     u_int8_t res;
 122     u_int8_t len[2];
 123 };
 124
 125 struct olsr_tc {
 126     u_int8_t ans_seq[2];
 127     u_int8_t res[2];
 128 };
 129
 130 struct olsr_hna4 {
 131     u_int8_t network[4];
 132     u_int8_t mask[4];
 133 };
 134
 135 struct olsr_hna6 {
 136     u_int8_t network[16];
 137     u_int8_t mask[16];
 138 };
 139
 140
 141 #define OLSR_EXTRACT_LINK_TYPE(link_code) (link_code & 0x3)
 142 #define OLSR_EXTRACT_NEIGHBOR_TYPE(link_code) (link_code >> 2)
 143
 144 static struct tok olsr_link_type_values[] = {
 145     { 0, "Unspecified" },
 146     { 1, "Asymmetric" },
 147     { 2, "Symmetric" },
 148     { 3, "Lost" },
 149     { 0, NULL}
 150 };
 151
 152 static struct tok olsr_neighbor_type_values[] = {
 153     { 0, "Not-Neighbor" },
 154     { 1, "Symmetric" },
 155     { 2, "Symmetric-MPR" },
 156     { 0, NULL}
 157 };
 158
 159 struct olsr_lq_neighbor4 {
 160     u_int8_t neighbor[4];
 161     u_int8_t link_quality;
 162     u_int8_t neighbor_link_quality;
 163     u_int8_t res[2];
 164 };
 165
 166 struct olsr_lq_neighbor6 {
 167     u_int8_t neighbor[16];
 168     u_int8_t link_quality;
 169     u_int8_t neighbor_link_quality;
 170     u_int8_t res[2];
 171 };
 172
 173 /*
 174  * macro to convert the 8-bit mantissa/exponent to a double float
 175  * taken from olsr.org.
 176  */
 177 #define VTIME_SCALE_FACTOR    0.0625
 178 #define ME_TO_DOUBLE(me) \
 179   (double)(VTIME_SCALE_FACTOR*(1+(double)(me>>4)/16)*(double)(1<<(me&0x0F)))
 180
 181 /*
 182  * print a neighbor list with LQ extensions.
 183  */
 184 static void
 185 olsr_print_lq_neighbor4 (const u_char *msg_data, u_int hello_len)
 186 {
 187     struct olsr_lq_neighbor4 *lq_neighbor;
 188
 189     while (hello_len >= sizeof(struct olsr_lq_neighbor4)) {
 190
 191         lq_neighbor = (struct olsr_lq_neighbor4 *)msg_data;
 192
 193         printf("\n\t      neighbor %s, link-quality %.2lf%%"
 194                ", neighbor-link-quality %.2lf%%",
 195                ipaddr_string(lq_neighbor->neighbor),
 196                ((double)lq_neighbor->link_quality/2.55),
 197                ((double)lq_neighbor->neighbor_link_quality/2.55));
 198
 199         msg_data += sizeof(struct olsr_lq_neighbor4);
 200         hello_len -= sizeof(struct olsr_lq_neighbor4);
 201     }
 202 }
 203
 204 #if INET6
 205 static void
 206 olsr_print_lq_neighbor6 (const u_char *msg_data, u_int hello_len)
 207 {
 208     struct olsr_lq_neighbor6 *lq_neighbor;
 209
 210     while (hello_len >= sizeof(struct olsr_lq_neighbor6)) {
 211
 212         lq_neighbor = (struct olsr_lq_neighbor6 *)msg_data;
 213
 214         printf("\n\t      neighbor %s, link-quality %.2lf%%"
 215                ", neighbor-link-quality %.2lf%%",
 216                ip6addr_string(lq_neighbor->neighbor),
 217                ((double)lq_neighbor->link_quality/2.55),
 218                ((double)lq_neighbor->neighbor_link_quality/2.55));
 219
 220         msg_data += sizeof(struct olsr_lq_neighbor6);
 221         hello_len -= sizeof(struct olsr_lq_neighbor6);
 222     }
 223 }
 224 #endif /* INET6 */
 225
 226 /*
 227  * print a neighbor list.
 228  */
 229 static void
 230 olsr_print_neighbor (const u_char *msg_data, u_int hello_len)
 231 {
 232     int neighbor;
 233
 234     printf("\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         printf("%s%s", ipaddr_string(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 (const u_char *pptr, u_int length, int is_ipv6)
 252 {
 253     union {
 254         const struct olsr_common *common;
 255         const struct olsr_msg4 *msg4;
 256         const struct olsr_msg6 *msg6;
 257         const struct olsr_hello *hello;
 258         const struct olsr_hello_link *hello_link;
 259         const struct olsr_tc *tc;
 260         const struct olsr_hna4 *hna;
 261     } ptr;
 262
 263     u_int msg_type, msg_len, msg_tlen, hello_len;
 264     u_int16_t name_entry_type, name_entry_len;
 265     u_int8_t link_type, neighbor_type;
 266     const u_char *tptr, *msg_data;
 267
 268     tptr = pptr;
 269
 270     if (length < sizeof(struct olsr_common)) {
 271         goto trunc;
 272     }
 273
 274     if (!TTEST2(*tptr, sizeof(struct olsr_common))) {
 275         goto trunc;
 276     }
 277
 278     ptr.common = (struct olsr_common *)tptr;
 279     length = MIN(length, EXTRACT_16BITS(ptr.common->packet_len));
 280
 281     printf("OLSRv%i, seq 0x%04x, length %u",
 282             (is_ipv6 == 0) ? 4 : 6,
 283             EXTRACT_16BITS(ptr.common->packet_seq),
 284             length);
 285
 286     tptr += sizeof(struct olsr_common);
 287
 288     /*
 289      * In non-verbose mode, just print version.
 290      */
 291     if (vflag < 1) {
 292         return;
 293     }
 294
 295     while (tptr < (pptr+length)) {
 296         union
 297         {
 298             struct olsr_msg4 *v4;
 299             struct olsr_msg6 *v6;
 300         } msgptr;
 301         int msg_len_valid = 0;
 302
 303         if (!TTEST2(*tptr, sizeof(struct olsr_msg4)))
 304             goto trunc;
 305
 306 #if INET6
 307         if (is_ipv6)
 308         {
 309             msgptr.v6 = (struct olsr_msg6 *) tptr;
 310             msg_type = msgptr.v6->msg_type;
 311             msg_len = EXTRACT_16BITS(msgptr.v6->msg_len);
 312             if ((msg_len >= sizeof (struct olsr_msg6))
 313                     && (msg_len <= length))
 314                 msg_len_valid = 1;
 315
 316             /* infinite loop check */
 317             if (msg_type == 0 || msg_len == 0) {
 318                 return;
 319             }
 320
 321             printf("\n\t%s Message (%#04x), originator %s, ttl %u, hop %u"
 322                     "\n\t  vtime %.3lfs, msg-seq 0x%04x, length %u%s",
 323                     tok2str(olsr_msg_values, "Unknown", msg_type),
 324                     msg_type, ip6addr_string(msgptr.v6->originator),
 325                     msgptr.v6->ttl,
 326                     msgptr.v6->hopcount,
 327                     ME_TO_DOUBLE(msgptr.v6->vtime),
 328                     EXTRACT_16BITS(msgptr.v6->msg_seq),
 329                     msg_len, (msg_len_valid == 0) ? " (invalid)" : "");
 330
 331             msg_tlen = msg_len - sizeof(struct olsr_msg6);
 332             msg_data = tptr + sizeof(struct olsr_msg6);
 333         }
 334         else /* (!is_ipv6) */
 335 #endif /* INET6 */
 336         {
 337             msgptr.v4 = (struct olsr_msg4 *) tptr;
 338             msg_type = msgptr.v4->msg_type;
 339             msg_len = EXTRACT_16BITS(msgptr.v4->msg_len);
 340             if ((msg_len >= sizeof (struct olsr_msg4))
 341                     && (msg_len <= length))
 342                 msg_len_valid = 1;
 343
 344             /* infinite loop check */
 345             if (msg_type == 0 || msg_len == 0) {
 346                 return;
 347             }
 348
 349             printf("\n\t%s Message (%#04x), originator %s, ttl %u, hop %u"
 350                     "\n\t  vtime %.3lfs, msg-seq 0x%04x, length %u%s",
 351                     tok2str(olsr_msg_values, "Unknown", msg_type),
 352                     msg_type, ipaddr_string(msgptr.v4->originator),
 353                     msgptr.v4->ttl,
 354                     msgptr.v4->hopcount,
 355                     ME_TO_DOUBLE(msgptr.v4->vtime),
 356                     EXTRACT_16BITS(msgptr.v4->msg_seq),
 357                     msg_len, (msg_len_valid == 0) ? " (invalid)" : "");
 358
 359             msg_tlen = msg_len - sizeof(struct olsr_msg4);
 360             msg_data = tptr + sizeof(struct olsr_msg4);
 361         }
 362
 363         switch (msg_type) {
 364         case OLSR_HELLO_MSG:
 365         case OLSR_HELLO_LQ_MSG:
 366             if (!TTEST2(*msg_data, sizeof(struct olsr_hello)))
 367                 goto trunc;
 368
 369             ptr.hello = (struct olsr_hello *)msg_data;
 370             printf("\n\t  hello-time %.3lfs, MPR willingness %u",
 371                    ME_TO_DOUBLE(ptr.hello->htime), ptr.hello->will);
 372             msg_data += sizeof(struct olsr_hello);
 373             msg_tlen -= sizeof(struct olsr_hello);
 374
 375             while (msg_tlen >= sizeof(struct olsr_hello_link)) {
 376                 int hello_len_valid = 0;
 377
 378                 /*
 379                  * link-type.
 380                  */
 381                 if (!TTEST2(*msg_data, sizeof(struct olsr_hello_link)))
 382                     goto trunc;
 383
 384                 ptr.hello_link = (struct olsr_hello_link *)msg_data;
 385
 386                 hello_len = EXTRACT_16BITS(ptr.hello_link->len);
 387                 link_type = OLSR_EXTRACT_LINK_TYPE(ptr.hello_link->link_code);
 388                 neighbor_type = OLSR_EXTRACT_NEIGHBOR_TYPE(ptr.hello_link->link_code);
 389
 390                 if ((hello_len <= msg_tlen)
 391                         && (hello_len >= sizeof(struct olsr_hello_link)))
 392                     hello_len_valid = 1;
 393
 394                 printf("\n\t    link-type %s, neighbor-type %s, len %u%s",
 395                        tok2str(olsr_link_type_values, "Unknown", link_type),
 396                        tok2str(olsr_neighbor_type_values, "Unknown", neighbor_type),
 397                        hello_len,
 398                        (hello_len_valid == 0) ? " (invalid)" : "");
 399
 400                 if (hello_len_valid == 0)
 401                     break;
 402
 403                 msg_data += sizeof(struct olsr_hello_link);
 404                 msg_tlen -= sizeof(struct olsr_hello_link);
 405                 hello_len -= sizeof(struct olsr_hello_link);
 406
 407                 if (msg_type == OLSR_HELLO_MSG) {
 408                     olsr_print_neighbor(msg_data, hello_len);
 409                 } else {
 410 #if INET6
 411                     if (is_ipv6)
 412                         olsr_print_lq_neighbor6(msg_data, hello_len);
 413                     else
 414 #endif
 415                         olsr_print_lq_neighbor4(msg_data, hello_len);
 416                 }
 417
 418                 msg_data += hello_len;
 419                 msg_tlen -= hello_len;
 420             }
 421             break;
 422
 423         case OLSR_TC_MSG:
 424         case OLSR_TC_LQ_MSG:
 425             if (!TTEST2(*msg_data, sizeof(struct olsr_tc)))
 426                 goto trunc;
 427
 428             ptr.tc = (struct olsr_tc *)msg_data;
 429             printf("\n\t    advertised neighbor seq 0x%04x",
 430                    EXTRACT_16BITS(ptr.tc->ans_seq));
 431             msg_data += sizeof(struct olsr_tc);
 432             msg_tlen -= sizeof(struct olsr_tc);
 433
 434             if (msg_type == OLSR_TC_MSG) {
 435                 olsr_print_neighbor(msg_data, msg_tlen);
 436             } else {
 437 #if INET6
 438                 if (is_ipv6)
 439                     olsr_print_lq_neighbor6(msg_data, msg_tlen);
 440                 else
 441 #endif
 442                     olsr_print_lq_neighbor4(msg_data, msg_tlen);
 443             }
 444             break;
 445
 446         case OLSR_MID_MSG:
 447         {
 448             size_t addr_size = sizeof(struct in_addr);
 449
 450 #if INET6
 451             if (is_ipv6)
 452                 addr_size = sizeof(struct in6_addr);
 453 #endif
 454
 455             if (!TTEST2(*msg_data, addr_size))
 456                 goto trunc;
 457
 458             while (msg_tlen >= addr_size) {
 459                 printf("\n\t  interface address %s",
 460 #if INET6
 461                         is_ipv6 ? ip6addr_string(msg_data) :
 462 #endif
 463                         ipaddr_string(msg_data));
 464                 msg_data += addr_size;
 465                 msg_tlen -= addr_size;
 466             }
 467             break;
 468         }
 469
 470         case OLSR_HNA_MSG:
 471             printf("\n\t  Advertised networks (total %u)",
 472                     (unsigned int) (msg_tlen / sizeof(struct olsr_hna6)));
 473 #if INET6
 474             if (is_ipv6)
 475             {
 476                 int i = 0;
 477                 while (msg_tlen >= sizeof(struct olsr_hna6)) {
 478                     struct olsr_hna6 *hna6;
 479
 480                     if (!TTEST2(*msg_data, sizeof(struct olsr_hna6)))
 481                         goto trunc;
 482
 483                     hna6 = (struct olsr_hna6 *)msg_data;
 484
 485                     printf("\n\t    #%i: %s/%u",
 486                             i, ip6addr_string(hna6->network),
 487                             mask62plen (hna6->mask));
 488
 489                     msg_data += sizeof(struct olsr_hna6);
 490                     msg_tlen -= sizeof(struct olsr_hna6);
 491                 }
 492             }
 493             else
 494 #endif
 495             {
 496                 int col = 0;
 497                 while (msg_tlen >= sizeof(struct olsr_hna4)) {
 498                     if (!TTEST2(*msg_data, sizeof(struct olsr_hna4)))
 499                         goto trunc;
 500
 501                     ptr.hna = (struct olsr_hna4 *)msg_data;
 502
 503                     /* print 4 prefixes per line */
 504                     if (col == 0)
 505                         printf ("\n\t    ");
 506                     else
 507                         printf (", ");
 508
 509                     printf("%s/%u",
 510                             ipaddr_string(ptr.hna->network),
 511                             mask2plen(EXTRACT_32BITS(ptr.hna->mask)));
 512
 513                     msg_data += sizeof(struct olsr_hna4);
 514                     msg_tlen -= sizeof(struct olsr_hna4);
 515
 516                     col = (col + 1) % 4;
 517                 }
 518             }
 519             break;
 520
 521         case OLSR_NAMESERVICE_MSG:
 522         {
 523             u_int name_entries = EXTRACT_16BITS(msg_data+2);
 524             u_int addr_size = 4;
 525             int name_entries_valid = 0;
 526             u_int i;
 527
 528             if (is_ipv6)
 529                 addr_size = 16;
 530
 531             if ((name_entries > 0)
 532                     && ((name_entries * (4 + addr_size)) <= msg_tlen))
 533                 name_entries_valid = 1;
 534
 535             printf("\n\t  Version %u, Entries %u%s",
 536                    EXTRACT_16BITS(msg_data),
 537                    name_entries, (name_entries_valid == 0) ? " (invalid)" : "");
 538
 539             if (name_entries_valid == 0)
 540                 break;
 541
 542             msg_data += 4;
 543             msg_tlen -= 4;
 544
 545             for (i = 0; i < name_entries; i++) {
 546                 int name_entry_len_valid = 0;
 547
 548                 if (msg_tlen < 4)
 549                     break;
 550
 551                 name_entry_type = EXTRACT_16BITS(msg_data);
 552                 name_entry_len = EXTRACT_16BITS(msg_data+2);
 553
 554                 msg_data += 4;
 555                 msg_tlen -= 4;
 556
 557                 if ((name_entry_len > 0) && ((addr_size + name_entry_len) <= msg_tlen))
 558                     name_entry_len_valid = 1;
 559
 560                 printf("\n\t    #%u: type %#06x, length %u%s",
 561                         (unsigned int) i, name_entry_type,
 562                         name_entry_len, (name_entry_len_valid == 0) ? " (invalid)" : "");
 563
 564                 if (name_entry_len_valid == 0)
 565                     break;
 566
 567                 {
 568                     char name[name_entry_len + 1];
 569                     memcpy (name, msg_data + addr_size, name_entry_len);
 570                     name[name_entry_len] = 0;
 571 #if INET6
 572                     if (is_ipv6)
 573                         printf(", address %s, name \"%s\"",
 574                                 ip6addr_string(msg_data), name);
 575                     else
 576 #endif
 577                         printf(", address %s, name \"%s\"",
 578                                 ipaddr_string(msg_data), name);
 579                 }
 580
 581                 /* 32-bit alignment */
 582                 if (name_entry_len%4 != 0)
 583                     name_entry_len+=4-(name_entry_len%4);
 584
 585                 msg_data += addr_size + name_entry_len;
 586                 msg_tlen -= addr_size + name_entry_len;
 587             } /* for (i = 0; i < name_entries; i++) */
 588             break;
 589         } /* case OLSR_NAMESERVICE_MSG */
 590
 591             /*
 592              * FIXME those are the defined messages that lack a decoder
 593              * you are welcome to contribute code ;-)
 594              */
 595         case OLSR_POWERINFO_MSG:
 596         default:
 597             print_unknown_data(msg_data, "\n\t    ", msg_tlen);
 598             break;
 599         } /* switch (msg_type) */
 600         tptr += msg_len;
 601     } /* while (tptr < (pptr+length)) */
 602
 603     return;
 604
 605  trunc:
 606     printf("[|olsr]");
 607 }
 608
 609 /*
 610  * Local Variables:
 611  * c-style: whitesmith
 612  * c-basic-offset: 4
 613  * End:
 614  */