contrib/tcpdump/print-bootp.c

   1 /*
   2  * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996, 1997
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that: (1) source code distributions
   7  * retain the above copyright notice and this paragraph in its entirety, (2)
   8  * distributions including binary code include the above copyright notice and
   9  * this paragraph in its entirety in the documentation or other materials
  10  * provided with the distribution, and (3) all advertising materials mentioning
  11  * features or use of this software display the following acknowledgement:
  12  * ``This product includes software developed by the University of California,
  13  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
  14  * the University nor the names of its contributors may be used to endorse
  15  * or promote products derived from this software without specific prior
  16  * written permission.
  17  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
  18  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  19  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  20  *
  21  * Format and print bootp packets.
  22  *
  23  * $FreeBSD$
  24  */
  25 #ifndef lint
  26 static const char rcsid[] =
  27     "@(#) $Header: /tcpdump/master/tcpdump/print-bootp.c,v 1.60 2001/09/17 21:57:56 fenner Exp $ (LBL)";
  28 #endif
  29
  30 #ifdef HAVE_CONFIG_H
  31 #include "config.h"
  32 #endif
  33
  34 #include <sys/param.h>
  35 #include <sys/time.h>
  36 #include <sys/socket.h>
  37
  38 struct mbuf;
  39 struct rtentry;
  40
  41 #include <netinet/in.h>
  42
  43 #include <ctype.h>
  44 #include <stdio.h>
  45 #include <string.h>
  46
  47 #include "interface.h"
  48 #include "addrtoname.h"
  49 #include "extract.h"
  50 #include "ether.h"
  51 #include "bootp.h"
  52
  53 static void rfc1048_print(const u_char *);
  54 static void cmu_print(const u_char *);
  55
  56 static char tstr[] = " [|bootp]";
  57
  58 /*
  59  * Print bootp requests
  60  */
  61 void
  62 bootp_print(register const u_char *cp, u_int length,
  63             u_short sport, u_short dport)
  64 {
  65         register const struct bootp *bp;
  66         static const u_char vm_cmu[4] = VM_CMU;
  67         static const u_char vm_rfc1048[4] = VM_RFC1048;
  68
  69         bp = (const struct bootp *)cp;
  70         TCHECK(bp->bp_op);
  71         switch (bp->bp_op) {
  72
  73         case BOOTREQUEST:
  74                 /* Usually, a request goes from a client to a server */
  75                 if (sport != IPPORT_BOOTPC || dport != IPPORT_BOOTPS)
  76                         printf(" (request)");
  77                 break;
  78
  79         case BOOTREPLY:
  80                 /* Usually, a reply goes from a server to a client */
  81                 if (sport != IPPORT_BOOTPS || dport != IPPORT_BOOTPC)
  82                         printf(" (reply)");
  83                 break;
  84
  85         default:
  86                 printf(" bootp-#%d", bp->bp_op);
  87         }
  88
  89         TCHECK(bp->bp_secs);
  90
  91         /* The usual hardware address type is 1 (10Mb Ethernet) */
  92         if (bp->bp_htype != 1)
  93                 printf(" htype-#%d", bp->bp_htype);
  94
  95         /* The usual length for 10Mb Ethernet address is 6 bytes */
  96         if (bp->bp_htype != 1 || bp->bp_hlen != 6)
  97                 printf(" hlen:%d", bp->bp_hlen);
  98
  99         /* Only print interesting fields */
 100         if (bp->bp_hops)
 101                 printf(" hops:%d", bp->bp_hops);
 102         if (bp->bp_xid)
 103                 printf(" xid:0x%x", (u_int32_t)ntohl(bp->bp_xid));
 104         if (bp->bp_secs)
 105                 printf(" secs:%d", ntohs(bp->bp_secs));
 106         if (bp->bp_flags)
 107                 printf(" flags:0x%x", ntohs(bp->bp_flags));
 108
 109         /* Client's ip address */
 110         TCHECK(bp->bp_ciaddr);
 111         if (bp->bp_ciaddr.s_addr)
 112                 printf(" C:%s", ipaddr_string(&bp->bp_ciaddr));
 113
 114         /* 'your' ip address (bootp client) */
 115         TCHECK(bp->bp_yiaddr);
 116         if (bp->bp_yiaddr.s_addr)
 117                 printf(" Y:%s", ipaddr_string(&bp->bp_yiaddr));
 118
 119         /* Server's ip address */
 120         TCHECK(bp->bp_siaddr);
 121         if (bp->bp_siaddr.s_addr)
 122                 printf(" S:%s", ipaddr_string(&bp->bp_siaddr));
 123
 124         /* Gateway's ip address */
 125         TCHECK(bp->bp_giaddr);
 126         if (bp->bp_giaddr.s_addr)
 127                 printf(" G:%s", ipaddr_string(&bp->bp_giaddr));
 128
 129         /* Client's Ethernet address */
 130         if (bp->bp_htype == 1 && bp->bp_hlen == 6) {
 131                 register const struct ether_header *eh;
 132                 register const char *e;
 133
 134                 TCHECK2(bp->bp_chaddr[0], 6);
 135                 eh = (const struct ether_header *)packetp;
 136                 if (bp->bp_op == BOOTREQUEST)
 137                         e = (const char *)ESRC(eh);
 138                 else if (bp->bp_op == BOOTREPLY)
 139                         e = (const char *)EDST(eh);
 140                 else
 141                         e = 0;
 142                 if (e == 0 || memcmp((const char *)bp->bp_chaddr, e, 6) != 0)
 143                         printf(" ether %s", etheraddr_string(bp->bp_chaddr));
 144         }
 145
 146         TCHECK2(bp->bp_sname[0], 1);            /* check first char only */
 147         if (*bp->bp_sname) {
 148                 printf(" sname \"");
 149                 if (fn_print(bp->bp_sname, snapend)) {
 150                         putchar('"');
 151                         fputs(tstr + 1, stdout);
 152                         return;
 153                 }
 154                 putchar('"');
 155         }
 156         TCHECK2(bp->bp_sname[0], 1);            /* check first char only */
 157         if (*bp->bp_file) {
 158                 printf(" file \"");
 159                 if (fn_print(bp->bp_file, snapend)) {
 160                         putchar('"');
 161                         fputs(tstr + 1, stdout);
 162                         return;
 163                 }
 164                 putchar('"');
 165         }
 166
 167         /* Decode the vendor buffer */
 168         TCHECK(bp->bp_vend[0]);
 169         if (memcmp((const char *)bp->bp_vend, vm_rfc1048,
 170                  sizeof(u_int32_t)) == 0)
 171                 rfc1048_print(bp->bp_vend);
 172         else if (memcmp((const char *)bp->bp_vend, vm_cmu,
 173                       sizeof(u_int32_t)) == 0)
 174                 cmu_print(bp->bp_vend);
 175         else {
 176                 u_int32_t ul;
 177
 178                 ul = EXTRACT_32BITS(&bp->bp_vend);
 179                 if (ul != 0)
 180                         printf("vend-#0x%x", ul);
 181         }
 182
 183         return;
 184 trunc:
 185         fputs(tstr, stdout);
 186 }
 187
 188 /*
 189  * The first character specifies the format to print:
 190  *     i - ip address (32 bits)
 191  *     p - ip address pairs (32 bits + 32 bits)
 192  *     l - long (32 bits)
 193  *     L - unsigned long (32 bits)
 194  *     s - short (16 bits)
 195  *     b - period-seperated decimal bytes (variable length)
 196  *     x - colon-seperated hex bytes (variable length)
 197  *     a - ascii string (variable length)
 198  *     B - on/off (8 bits)
 199  *     $ - special (explicit code to handle)
 200  */
 201 static struct tok tag2str[] = {
 202 /* RFC1048 tags */
 203         { TAG_PAD,              " PAD" },
 204         { TAG_SUBNET_MASK,      "iSM" },        /* subnet mask (RFC950) */
 205         { TAG_TIME_OFFSET,      "LTZ" },        /* seconds from UTC */
 206         { TAG_GATEWAY,          "iDG" },        /* default gateway */
 207         { TAG_TIME_SERVER,      "iTS" },        /* time servers (RFC868) */
 208         { TAG_NAME_SERVER,      "iIEN" },       /* IEN name servers (IEN116) */
 209         { TAG_DOMAIN_SERVER,    "iNS" },        /* domain name (RFC1035) */
 210         { TAG_LOG_SERVER,       "iLOG" },       /* MIT log servers */
 211         { TAG_COOKIE_SERVER,    "iCS" },        /* cookie servers (RFC865) */
 212         { TAG_LPR_SERVER,       "iLPR" },       /* lpr server (RFC1179) */
 213         { TAG_IMPRESS_SERVER,   "iIM" },        /* impress servers (Imagen) */
 214         { TAG_RLP_SERVER,       "iRL" },        /* resource location (RFC887) */
 215         { TAG_HOSTNAME,         "aHN" },        /* ascii hostname */
 216         { TAG_BOOTSIZE,         "sBS" },        /* 512 byte blocks */
 217         { TAG_END,              " END" },
 218 /* RFC1497 tags */
 219         { TAG_DUMPPATH,         "aDP" },
 220         { TAG_DOMAINNAME,       "aDN" },
 221         { TAG_SWAP_SERVER,      "iSS" },
 222         { TAG_ROOTPATH,         "aRP" },
 223         { TAG_EXTPATH,          "aEP" },
 224 /* RFC2132 tags */
 225         { TAG_IP_FORWARD,       "BIPF" },
 226         { TAG_NL_SRCRT,         "BSRT" },
 227         { TAG_PFILTERS,         "pPF" },
 228         { TAG_REASS_SIZE,       "sRSZ" },
 229         { TAG_DEF_TTL,          "bTTL" },
 230         { TAG_MTU_TIMEOUT,      "lMA" },
 231         { TAG_MTU_TABLE,        "sMT" },
 232         { TAG_INT_MTU,          "sMTU" },
 233         { TAG_LOCAL_SUBNETS,    "BLSN" },
 234         { TAG_BROAD_ADDR,       "iBR" },
 235         { TAG_DO_MASK_DISC,     "BMD" },
 236         { TAG_SUPPLY_MASK,      "BMS" },
 237         { TAG_DO_RDISC,         "BRD" },
 238         { TAG_RTR_SOL_ADDR,     "iRSA" },
 239         { TAG_STATIC_ROUTE,     "pSR" },
 240         { TAG_USE_TRAILERS,     "BUT" },
 241         { TAG_ARP_TIMEOUT,      "lAT" },
 242         { TAG_ETH_ENCAP,        "BIE" },
 243         { TAG_TCP_TTL,          "bTT" },
 244         { TAG_TCP_KEEPALIVE,    "lKI" },
 245         { TAG_KEEPALIVE_GO,     "BKG" },
 246         { TAG_NIS_DOMAIN,       "aYD" },
 247         { TAG_NIS_SERVERS,      "iYS" },
 248         { TAG_NTP_SERVERS,      "iNTP" },
 249         { TAG_VENDOR_OPTS,      "bVO" },
 250         { TAG_NETBIOS_NS,       "iWNS" },
 251         { TAG_NETBIOS_DDS,      "iWDD" },
 252         { TAG_NETBIOS_NODE,     "$WNT" },
 253         { TAG_NETBIOS_SCOPE,    "aWSC" },
 254         { TAG_XWIN_FS,          "iXFS" },
 255         { TAG_XWIN_DM,          "iXDM" },
 256         { TAG_NIS_P_DOMAIN,     "sN+D" },
 257         { TAG_NIS_P_SERVERS,    "iN+S" },
 258         { TAG_MOBILE_HOME,      "iMH" },
 259         { TAG_SMPT_SERVER,      "iSMTP" },
 260         { TAG_POP3_SERVER,      "iPOP3" },
 261         { TAG_NNTP_SERVER,      "iNNTP" },
 262         { TAG_WWW_SERVER,       "iWWW" },
 263         { TAG_FINGER_SERVER,    "iFG" },
 264         { TAG_IRC_SERVER,       "iIRC" },
 265         { TAG_STREETTALK_SRVR,  "iSTS" },
 266         { TAG_STREETTALK_STDA,  "iSTDA" },
 267         { TAG_REQUESTED_IP,     "iRQ" },
 268         { TAG_IP_LEASE,         "lLT" },
 269         { TAG_OPT_OVERLOAD,     "$OO" },
 270         { TAG_TFTP_SERVER,      "aTFTP" },
 271         { TAG_BOOTFILENAME,     "aBF" },
 272         { TAG_DHCP_MESSAGE,     " DHCP" },
 273         { TAG_SERVER_ID,        "iSID" },
 274         { TAG_PARM_REQUEST,     "bPR" },
 275         { TAG_MESSAGE,          "aMSG" },
 276         { TAG_MAX_MSG_SIZE,     "sMSZ" },
 277         { TAG_RENEWAL_TIME,     "lRN" },
 278         { TAG_REBIND_TIME,      "lRB" },
 279         { TAG_VENDOR_CLASS,     "aVC" },
 280         { TAG_CLIENT_ID,        "$CID" },
 281 /* RFC 2485 */
 282         { TAG_OPEN_GROUP_UAP,   "aUAP" },
 283 /* RFC 2563 */
 284         { TAG_DISABLE_AUTOCONF, "BNOAUTO" },
 285 /* RFC 2610 */
 286         { TAG_SLP_DA,           "bSLP-DA" },    /*"b" is a little wrong */
 287         { TAG_SLP_SCOPE,        "bSLP-SCOPE" }, /*"b" is a little wrong */
 288 /* RFC 2937 */
 289         { TAG_NS_SEARCH,        "sNSSEARCH" },  /* XXX 's' */
 290 /* RFC 3011 */
 291         { TAG_IP4_SUBNET_SELECT, "iSUBNET" },
 292 /* ftp://ftp.isi.edu/.../assignments/bootp-dhcp-extensions */
 293         { TAG_USER_CLASS,       "aCLASS" },
 294         { TAG_SLP_NAMING_AUTH,  "aSLP-NA" },
 295         { TAG_CLIENT_FQDN,      "$FQDN" },
 296         { TAG_AGENT_CIRCUIT,    "bACKT" },
 297         { TAG_AGENT_REMOTE,     "bARMT" },
 298         { TAG_AGENT_MASK,       "bAMSK" },
 299         { TAG_TZ_STRING,        "aTZSTR" },
 300         { TAG_FQDN_OPTION,      "bFQDNS" },     /* XXX 'b' */
 301         { TAG_AUTH,             "bAUTH" },      /* XXX 'b' */
 302         { TAG_VINES_SERVERS,    "iVINES" },
 303         { TAG_SERVER_RANK,      "sRANK" },
 304         { TAG_CLIENT_ARCH,      "sARCH" },
 305         { TAG_CLIENT_NDI,       "bNDI" },       /* XXX 'b' */
 306         { TAG_CLIENT_GUID,      "bGUID" },      /* XXX 'b' */
 307         { TAG_LDAP_URL,         "aLDAP" },
 308         { TAG_6OVER4,           "i6o4" },
 309         { TAG_PRINTER_NAME,     "aPRTR" },
 310         { TAG_MDHCP_SERVER,     "bMDHCP" },     /* XXX 'b' */
 311         { TAG_IPX_COMPAT,       "bIPX" },       /* XXX 'b' */
 312         { TAG_NETINFO_PARENT,   "iNI" },
 313         { TAG_NETINFO_PARENT_TAG, "aNITAG" },
 314         { TAG_URL,              "aURL" },
 315         { TAG_FAILOVER,         "bFAIL" },      /* XXX 'b' */
 316         { 0,                    NULL }
 317 };
 318 /* 2-byte extended tags */
 319 static struct tok xtag2str[] = {
 320         { 0,                    NULL }
 321 };
 322
 323 /* DHCP "options overload" types */
 324 static struct tok oo2str[] = {
 325         { 1,                    "file" },
 326         { 2,                    "sname" },
 327         { 3,                    "file+sname" },
 328         { 0,                    NULL }
 329 };
 330
 331 /* NETBIOS over TCP/IP node type options */
 332 static struct tok nbo2str[] = {
 333         { 0x1,                  "b-node" },
 334         { 0x2,                  "p-node" },
 335         { 0x4,                  "m-node" },
 336         { 0x8,                  "h-node" },
 337         { 0,                    NULL }
 338 };
 339
 340 /* ARP Hardware types, for Client-ID option */
 341 static struct tok arp2str[] = {
 342         { 0x1,                  "ether" },
 343         { 0x6,                  "ieee802" },
 344         { 0x7,                  "arcnet" },
 345         { 0xf,                  "frelay" },
 346         { 0x17,                 "strip" },
 347         { 0x18,                 "ieee1394" },
 348         { 0,                    NULL }
 349 };
 350
 351 static void
 352 rfc1048_print(register const u_char *bp)
 353 {
 354         register u_char tag;
 355         register u_int len, size;
 356         register const char *cp;
 357         register char c;
 358         int first;
 359         u_int32_t ul;
 360         u_short us;
 361
 362         printf(" vend-rfc1048");
 363
 364         /* Step over magic cookie */
 365         bp += sizeof(int32_t);
 366
 367         /* Loop while we there is a tag left in the buffer */
 368         while (bp + 1 < snapend) {
 369                 tag = *bp++;
 370                 if (tag == TAG_PAD)
 371                         continue;
 372                 if (tag == TAG_END)
 373                         return;
 374                 if (tag == TAG_EXTENDED_OPTION) {
 375                         TCHECK2(*(bp + 1), 2);
 376                         tag = EXTRACT_16BITS(bp + 1);
 377                         /* XXX we don't know yet if the IANA will
 378                          * preclude overlap of 1-byte and 2-byte spaces.
 379                          * If not, we need to offset tag after this step.
 380                          */
 381                         cp = tok2str(xtag2str, "?xT%d", tag);
 382                 } else
 383                         cp = tok2str(tag2str, "?T%d", tag);
 384                 c = *cp++;
 385                 printf(" %s:", cp);
 386
 387                 /* Get the length; check for truncation */
 388                 if (bp + 1 >= snapend) {
 389                         fputs(tstr, stdout);
 390                         return;
 391                 }
 392                 len = *bp++;
 393                 if (bp + len >= snapend) {
 394                         fputs(tstr, stdout);
 395                         return;
 396                 }
 397
 398                 if (tag == TAG_DHCP_MESSAGE && len == 1) {
 399                         c = *bp++;
 400                         switch (c) {
 401                         case DHCPDISCOVER:      printf("DISCOVER");     break;
 402                         case DHCPOFFER:         printf("OFFER");        break;
 403                         case DHCPREQUEST:       printf("REQUEST");      break;
 404                         case DHCPDECLINE:       printf("DECLINE");      break;
 405                         case DHCPACK:           printf("ACK");          break;
 406                         case DHCPNAK:           printf("NACK");         break;
 407                         case DHCPRELEASE:       printf("RELEASE");      break;
 408                         case DHCPINFORM:        printf("INFORM");       break;
 409                         default:                printf("%u", c);        break;
 410                         }
 411                         continue;
 412                 }
 413
 414                 if (tag == TAG_PARM_REQUEST) {
 415                         first = 1;
 416                         while (len-- > 0) {
 417                                 c = *bp++;
 418                                 cp = tok2str(tag2str, "?T%d", c);
 419                                 if (!first)
 420                                         putchar('+');
 421                                 printf("%s", cp + 1);
 422                                 first = 0;
 423                         }
 424                         continue;
 425                 }
 426                 if (tag == TAG_EXTENDED_REQUEST) {
 427                         first = 1;
 428                         while (len > 1) {
 429                                 len -= 2;
 430                                 c = EXTRACT_16BITS(bp);
 431                                 bp += 2;
 432                                 cp = tok2str(xtag2str, "?xT%d", c);
 433                                 if (!first)
 434                                         putchar('+');
 435                                 printf("%s", cp + 1);
 436                                 first = 0;
 437                         }
 438                         continue;
 439                 }
 440
 441                 /* Print data */
 442                 size = len;
 443                 if (c == '?') {
 444                         /* Base default formats for unknown tags on data size */
 445                         if (size & 1)
 446                                 c = 'b';
 447                         else if (size & 2)
 448                                 c = 's';
 449                         else
 450                                 c = 'l';
 451                 }
 452                 first = 1;
 453                 switch (c) {
 454
 455                 case 'a':
 456                         /* ascii strings */
 457                         putchar('"');
 458                         (void)fn_printn(bp, size, NULL);
 459                         putchar('"');
 460                         bp += size;
 461                         size = 0;
 462                         break;
 463
 464                 case 'i':
 465                 case 'l':
 466                 case 'L':
 467                         /* ip addresses/32-bit words */
 468                         while (size >= sizeof(ul)) {
 469                                 if (!first)
 470                                         putchar(',');
 471                                 ul = EXTRACT_32BITS(bp);
 472                                 if (c == 'i') {
 473                                         ul = htonl(ul);
 474                                         printf("%s", ipaddr_string(&ul));
 475                                 } else if (c == 'L')
 476                                         printf("%d", ul);
 477                                 else
 478                                         printf("%u", ul);
 479                                 bp += sizeof(ul);
 480                                 size -= sizeof(ul);
 481                                 first = 0;
 482                         }
 483                         break;
 484
 485                 case 'p':
 486                         /* IP address pairs */
 487                         while (size >= 2*sizeof(ul)) {
 488                                 if (!first)
 489                                         putchar(',');
 490                                 memcpy((char *)&ul, (const char *)bp, sizeof(ul));
 491                                 printf("(%s:", ipaddr_string(&ul));
 492                                 bp += sizeof(ul);
 493                                 memcpy((char *)&ul, (const char *)bp, sizeof(ul));
 494                                 printf("%s)", ipaddr_string(&ul));
 495                                 bp += sizeof(ul);
 496                                 size -= 2*sizeof(ul);
 497                                 first = 0;
 498                         }
 499                         break;
 500
 501                 case 's':
 502                         /* shorts */
 503                         while (size >= sizeof(us)) {
 504                                 if (!first)
 505                                         putchar(',');
 506                                 us = EXTRACT_16BITS(bp);
 507                                 printf("%d", us);
 508                                 bp += sizeof(us);
 509                                 size -= sizeof(us);
 510                                 first = 0;
 511                         }
 512                         break;
 513
 514                 case 'B':
 515                         /* boolean */
 516                         while (size > 0) {
 517                                 if (!first)
 518                                         putchar(',');
 519                                 switch (*bp) {
 520                                 case 0:
 521                                         putchar('N');
 522                                         break;
 523                                 case 1:
 524                                         putchar('Y');
 525                                         break;
 526                                 default:
 527                                         printf("%d?", *bp);
 528                                         break;
 529                                 }
 530                                 ++bp;
 531                                 --size;
 532                                 first = 0;
 533                         }
 534                         break;
 535
 536                 case 'b':
 537                 case 'x':
 538                 default:
 539                         /* Bytes */
 540                         while (size > 0) {
 541                                 if (!first)
 542                                         putchar(c == 'x' ? ':' : '.');
 543                                 if (c == 'x')
 544                                         printf("%02x", *bp);
 545                                 else
 546                                         printf("%d", *bp);
 547                                 ++bp;
 548                                 --size;
 549                                 first = 0;
 550                         }
 551                         break;
 552
 553                 case '$':
 554                         /* Guys we can't handle with one of the usual cases */
 555                         switch (tag) {
 556
 557                         case TAG_NETBIOS_NODE:
 558                                 tag = *bp++;
 559                                 --size;
 560                                 fputs(tok2str(nbo2str, NULL, tag), stdout);
 561                                 break;
 562
 563                         case TAG_OPT_OVERLOAD:
 564                                 tag = *bp++;
 565                                 --size;
 566                                 fputs(tok2str(oo2str, NULL, tag), stdout);
 567                                 break;
 568
 569                         case TAG_CLIENT_FQDN:
 570                                 if (*bp++)
 571                                         printf("[svrreg]");
 572                                 if (*bp)
 573                                         printf("%d/%d/", *bp, *(bp+1));
 574                                 bp += 2;
 575                                 putchar('"');
 576                                 (void)fn_printn(bp, size - 3, NULL);
 577                                 putchar('"');
 578                                 bp += size - 3;
 579                                 size = 0;
 580                                 break;
 581
 582                         case TAG_CLIENT_ID:
 583                             {   int type = *bp++;
 584                                 size--;
 585                                 if (type == 0) {
 586                                         putchar('"');
 587                                         (void)fn_printn(bp, size, NULL);
 588                                         putchar('"');
 589                                         break;
 590                                 } else {
 591                                         printf("[%s]", tok2str(arp2str, "type-%d", type));
 592                                 }
 593                                 while (size > 0) {
 594                                         if (!first)
 595                                                 putchar(':');
 596                                         printf("%02x", *bp);
 597                                         ++bp;
 598                                         --size;
 599                                         first = 0;
 600                                 }
 601                                 break;
 602                             }
 603
 604                         default:
 605                                 printf("[unknown special tag %d, size %d]",
 606                                     tag, size);
 607                                 bp += size;
 608                                 size = 0;
 609                                 break;
 610                         }
 611                         break;
 612                 }
 613                 /* Data left over? */
 614                 if (size)
 615                         printf("[len %d]", len);
 616         }
 617         return;
 618 trunc:
 619         printf("|[rfc1048]");
 620 }
 621
 622 static void
 623 cmu_print(register const u_char *bp)
 624 {
 625         register const struct cmu_vend *cmu;
 626
 627 #define PRINTCMUADDR(m, s) { TCHECK(cmu->m); \
 628     if (cmu->m.s_addr != 0) \
 629         printf(" %s:%s", s, ipaddr_string(&cmu->m.s_addr)); }
 630
 631         printf(" vend-cmu");
 632         cmu = (const struct cmu_vend *)bp;
 633
 634         /* Only print if there are unknown bits */
 635         TCHECK(cmu->v_flags);
 636         if ((cmu->v_flags & ~(VF_SMASK)) != 0)
 637                 printf(" F:0x%x", cmu->v_flags);
 638         PRINTCMUADDR(v_dgate, "DG");
 639         PRINTCMUADDR(v_smask, cmu->v_flags & VF_SMASK ? "SM" : "SM*");
 640         PRINTCMUADDR(v_dns1, "NS1");
 641         PRINTCMUADDR(v_dns2, "NS2");
 642         PRINTCMUADDR(v_ins1, "IEN1");
 643         PRINTCMUADDR(v_ins2, "IEN2");
 644         PRINTCMUADDR(v_ts1, "TS1");
 645         PRINTCMUADDR(v_ts2, "TS2");
 646         return;
 647
 648 trunc:
 649         fputs(tstr, stdout);
 650 #undef PRINTCMUADDR
 651 }