contrib/tcpdump/print-domain.c

   1 /*
   2  * Copyright (c) 1988, 1989, 1990, 1991, 1992, 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  * $FreeBSD$
  22  */
  23
  24 #ifndef lint
  25 static const char rcsid[] _U_ =
  26     "@(#) $Header: /tcpdump/master/tcpdump/print-domain.c,v 1.89 2004/03/23 19:03:03 fenner Exp $ (LBL)";
  27 #endif
  28
  29 #ifdef HAVE_CONFIG_H
  30 #include "config.h"
  31 #endif
  32
  33 #include <tcpdump-stdinc.h>
  34
  35 #include "nameser.h"
  36
  37 #include <stdio.h>
  38 #include <string.h>
  39
  40 #include "interface.h"
  41 #include "addrtoname.h"
  42 #include "extract.h"                    /* must come after interface.h */
  43
  44 static const char *ns_ops[] = {
  45         "", " inv_q", " stat", " op3", " notify", " update", " op6", " op7",
  46         " op8", " updataA", " updateD", " updateDA",
  47         " updateM", " updateMA", " zoneInit", " zoneRef",
  48 };
  49
  50 static const char *ns_resp[] = {
  51         "", " FormErr", " ServFail", " NXDomain",
  52         " NotImp", " Refused", " YXDomain", " YXRRSet",
  53         " NXRRSet", " NotAuth", " NotZone", " Resp11",
  54         " Resp12", " Resp13", " Resp14", " NoChange",
  55 };
  56
  57 /* skip over a domain name */
  58 static const u_char *
  59 ns_nskip(register const u_char *cp)
  60 {
  61         register u_char i;
  62
  63         if (!TTEST2(*cp, 1))
  64                 return (NULL);
  65         i = *cp++;
  66         while (i) {
  67                 if ((i & INDIR_MASK) == INDIR_MASK)
  68                         return (cp + 1);
  69                 if ((i & INDIR_MASK) == EDNS0_MASK) {
  70                         int bitlen, bytelen;
  71
  72                         if ((i & ~INDIR_MASK) != EDNS0_ELT_BITLABEL)
  73                                 return(NULL); /* unknown ELT */
  74                         if (!TTEST2(*cp, 1))
  75                                 return (NULL);
  76                         if ((bitlen = *cp++) == 0)
  77                                 bitlen = 256;
  78                         bytelen = (bitlen + 7) / 8;
  79                         cp += bytelen;
  80                 } else
  81                         cp += i;
  82                 if (!TTEST2(*cp, 1))
  83                         return (NULL);
  84                 i = *cp++;
  85         }
  86         return (cp);
  87 }
  88
  89 /* print a <domain-name> */
  90 static const u_char *
  91 blabel_print(const u_char *cp)
  92 {
  93         int bitlen, slen, b;
  94         const u_char *bitp, *lim;
  95         char tc;
  96
  97         if (!TTEST2(*cp, 1))
  98                 return(NULL);
  99         if ((bitlen = *cp) == 0)
 100                 bitlen = 256;
 101         slen = (bitlen + 3) / 4;
 102         lim = cp + 1 + slen;
 103
 104         /* print the bit string as a hex string */
 105         printf("\\[x");
 106         for (bitp = cp + 1, b = bitlen; bitp < lim && b > 7; b -= 8, bitp++) {
 107                 TCHECK(*bitp);
 108                 printf("%02x", *bitp);
 109         }
 110         if (b > 4) {
 111                 TCHECK(*bitp);
 112                 tc = *bitp++;
 113                 printf("%02x", tc & (0xff << (8 - b)));
 114         } else if (b > 0) {
 115                 TCHECK(*bitp);
 116                 tc = *bitp++;
 117                 printf("%1x", ((tc >> 4) & 0x0f) & (0x0f << (4 - b)));
 118         }
 119         printf("/%d]", bitlen);
 120         return lim;
 121 trunc:
 122         printf(".../%d]", bitlen);
 123         return NULL;
 124 }
 125
 126 static int
 127 labellen(const u_char *cp)
 128 {
 129         register u_int i;
 130
 131         if (!TTEST2(*cp, 1))
 132                 return(-1);
 133         i = *cp;
 134         if ((i & INDIR_MASK) == EDNS0_MASK) {
 135                 int bitlen, elt;
 136
 137                 if ((elt = (i & ~INDIR_MASK)) != EDNS0_ELT_BITLABEL)
 138                         return(-1);
 139                 if (!TTEST2(*(cp + 1), 1))
 140                         return(-1);
 141                 if ((bitlen = *(cp + 1)) == 0)
 142                         bitlen = 256;
 143                 return(((bitlen + 7) / 8) + 1);
 144         } else
 145                 return(i);
 146 }
 147
 148 static const u_char *
 149 ns_nprint(register const u_char *cp, register const u_char *bp)
 150 {
 151         register u_int i, l;
 152         register const u_char *rp = NULL;
 153         register int compress = 0;
 154         int chars_processed;
 155         int elt;
 156         int data_size = snapend - bp;
 157
 158         if ((l = labellen(cp)) == (u_int)-1)
 159                 return(NULL);
 160         if (!TTEST2(*cp, 1))
 161                 return(NULL);
 162         chars_processed = 1;
 163         if (((i = *cp++) & INDIR_MASK) != INDIR_MASK) {
 164                 compress = 0;
 165                 rp = cp + l;
 166         }
 167
 168         if (i != 0)
 169                 while (i && cp < snapend) {
 170                         if ((i & INDIR_MASK) == INDIR_MASK) {
 171                                 if (!compress) {
 172                                         rp = cp + 1;
 173                                         compress = 1;
 174                                 }
 175                                 if (!TTEST2(*cp, 1))
 176                                         return(NULL);
 177                                 cp = bp + (((i << 8) | *cp) & 0x3fff);
 178                                 if ((l = labellen(cp)) == (u_int)-1)
 179                                         return(NULL);
 180                                 if (!TTEST2(*cp, 1))
 181                                         return(NULL);
 182                                 i = *cp++;
 183                                 chars_processed++;
 184
 185                                 /*
 186                                  * If we've looked at every character in
 187                                  * the message, this pointer will make
 188                                  * us look at some character again,
 189                                  * which means we're looping.
 190                                  */
 191                                 if (chars_processed >= data_size) {
 192                                         printf("<LOOP>");
 193                                         return (NULL);
 194                                 }
 195                                 continue;
 196                         }
 197                         if ((i & INDIR_MASK) == EDNS0_MASK) {
 198                                 elt = (i & ~INDIR_MASK);
 199                                 switch(elt) {
 200                                 case EDNS0_ELT_BITLABEL:
 201                                         if (blabel_print(cp) == NULL)
 202                                                 return (NULL);
 203                                         break;
 204                                 default:
 205                                         /* unknown ELT */
 206                                         printf("<ELT %d>", elt);
 207                                         return(NULL);
 208                                 }
 209                         } else {
 210                                 if (fn_printn(cp, l, snapend))
 211                                         return(NULL);
 212                         }
 213
 214                         cp += l;
 215                         chars_processed += l;
 216                         putchar('.');
 217                         if ((l = labellen(cp)) == (u_int)-1)
 218                                 return(NULL);
 219                         if (!TTEST2(*cp, 1))
 220                                 return(NULL);
 221                         i = *cp++;
 222                         chars_processed++;
 223                         if (!compress)
 224                                 rp += l + 1;
 225                 }
 226         else
 227                 putchar('.');
 228         return (rp);
 229 }
 230
 231 /* print a <character-string> */
 232 static const u_char *
 233 ns_cprint(register const u_char *cp)
 234 {
 235         register u_int i;
 236
 237         if (!TTEST2(*cp, 1))
 238                 return (NULL);
 239         i = *cp++;
 240         if (fn_printn(cp, i, snapend))
 241                 return (NULL);
 242         return (cp + i);
 243 }
 244
 245 /* http://www.iana.org/assignments/dns-parameters */
 246 struct tok ns_type2str[] = {
 247         { T_A,          "A" },                  /* RFC 1035 */
 248         { T_NS,         "NS" },                 /* RFC 1035 */
 249         { T_MD,         "MD" },                 /* RFC 1035 */
 250         { T_MF,         "MF" },                 /* RFC 1035 */
 251         { T_CNAME,      "CNAME" },              /* RFC 1035 */
 252         { T_SOA,        "SOA" },                /* RFC 1035 */
 253         { T_MB,         "MB" },                 /* RFC 1035 */
 254         { T_MG,         "MG" },                 /* RFC 1035 */
 255         { T_MR,         "MR" },                 /* RFC 1035 */
 256         { T_NULL,       "NULL" },               /* RFC 1035 */
 257         { T_WKS,        "WKS" },                /* RFC 1035 */
 258         { T_PTR,        "PTR" },                /* RFC 1035 */
 259         { T_HINFO,      "HINFO" },              /* RFC 1035 */
 260         { T_MINFO,      "MINFO" },              /* RFC 1035 */
 261         { T_MX,         "MX" },                 /* RFC 1035 */
 262         { T_TXT,        "TXT" },                /* RFC 1035 */
 263         { T_RP,         "RP" },                 /* RFC 1183 */
 264         { T_AFSDB,      "AFSDB" },              /* RFC 1183 */
 265         { T_X25,        "X25" },                /* RFC 1183 */
 266         { T_ISDN,       "ISDN" },               /* RFC 1183 */
 267         { T_RT,         "RT" },                 /* RFC 1183 */
 268         { T_NSAP,       "NSAP" },               /* RFC 1706 */
 269         { T_NSAP_PTR,   "NSAP_PTR" },
 270         { T_SIG,        "SIG" },                /* RFC 2535 */
 271         { T_KEY,        "KEY" },                /* RFC 2535 */
 272         { T_PX,         "PX" },                 /* RFC 2163 */
 273         { T_GPOS,       "GPOS" },               /* RFC 1712 */
 274         { T_AAAA,       "AAAA" },               /* RFC 1886 */
 275         { T_LOC,        "LOC" },                /* RFC 1876 */
 276         { T_NXT,        "NXT" },                /* RFC 2535 */
 277         { T_EID,        "EID" },                /* Nimrod */
 278         { T_NIMLOC,     "NIMLOC" },             /* Nimrod */
 279         { T_SRV,        "SRV" },                /* RFC 2782 */
 280         { T_ATMA,       "ATMA" },               /* ATM Forum */
 281         { T_NAPTR,      "NAPTR" },              /* RFC 2168, RFC 2915 */
 282         { T_A6,         "A6" },                 /* RFC 2874 */
 283         { T_DNAME,      "DNAME" },              /* RFC 2672 */
 284         { T_OPT,        "OPT" },                /* RFC 2671 */
 285         { T_UINFO,      "UINFO" },
 286         { T_UID,        "UID" },
 287         { T_GID,        "GID" },
 288         { T_UNSPEC,     "UNSPEC" },
 289         { T_UNSPECA,    "UNSPECA" },
 290         { T_TKEY,       "TKEY" },               /* RFC 2930 */
 291         { T_TSIG,       "TSIG" },               /* RFC 2845 */
 292         { T_IXFR,       "IXFR" },               /* RFC 1995 */
 293         { T_AXFR,       "AXFR" },               /* RFC 1035 */
 294         { T_MAILB,      "MAILB" },              /* RFC 1035 */
 295         { T_MAILA,      "MAILA" },              /* RFC 1035 */
 296         { T_ANY,        "ANY" },
 297         { 0,            NULL }
 298 };
 299
 300 struct tok ns_class2str[] = {
 301         { C_IN,         "IN" },         /* Not used */
 302         { C_CHAOS,      "CHAOS" },
 303         { C_HS,         "HS" },
 304         { C_ANY,        "ANY" },
 305         { 0,            NULL }
 306 };
 307
 308 /* print a query */
 309 static const u_char *
 310 ns_qprint(register const u_char *cp, register const u_char *bp, int is_mdns)
 311 {
 312         register const u_char *np = cp;
 313         register u_int i;
 314
 315         cp = ns_nskip(cp);
 316
 317         if (cp == NULL || !TTEST2(*cp, 4))
 318                 return(NULL);
 319
 320         /* print the qtype and qclass (if it's not IN) */
 321         i = EXTRACT_16BITS(cp);
 322         cp += 2;
 323         printf(" %s", tok2str(ns_type2str, "Type%d", i));
 324         i = EXTRACT_16BITS(cp);
 325         cp += 2;
 326         if (is_mdns && i == (C_IN|C_CACHE_FLUSH))
 327                 printf(" (Cache flush)");
 328         else if (i != C_IN)
 329                 printf(" %s", tok2str(ns_class2str, "(Class %d)", i));
 330
 331         fputs("? ", stdout);
 332         cp = ns_nprint(np, bp);
 333         return(cp ? cp + 4 : NULL);
 334 }
 335
 336 /* print a reply */
 337 static const u_char *
 338 ns_rprint(register const u_char *cp, register const u_char *bp, int is_mdns)
 339 {
 340         register u_int class;
 341         register u_short typ, len;
 342         register const u_char *rp;
 343
 344         if (vflag) {
 345                 putchar(' ');
 346                 if ((cp = ns_nprint(cp, bp)) == NULL)
 347                         return NULL;
 348         } else
 349                 cp = ns_nskip(cp);
 350
 351         if (cp == NULL || !TTEST2(*cp, 10))
 352                 return (snapend);
 353
 354         /* print the type/qtype and class (if it's not IN) */
 355         typ = EXTRACT_16BITS(cp);
 356         cp += 2;
 357         class = EXTRACT_16BITS(cp);
 358         cp += 2;
 359         if (is_mdns && class == (C_IN|C_CACHE_FLUSH))
 360                 printf(" (Cache flush)");
 361         else if (class != C_IN && typ != T_OPT)
 362                 printf(" %s", tok2str(ns_class2str, "(Class %d)", class));
 363
 364         /* ignore ttl */
 365         cp += 4;
 366
 367         len = EXTRACT_16BITS(cp);
 368         cp += 2;
 369
 370         rp = cp + len;
 371
 372         printf(" %s", tok2str(ns_type2str, "Type%d", typ));
 373         if (rp > snapend)
 374                 return(NULL);
 375
 376         switch (typ) {
 377         case T_A:
 378                 if (!TTEST2(*cp, sizeof(struct in_addr)))
 379                         return(NULL);
 380                 printf(" %s", ipaddr_string(cp));
 381                 break;
 382
 383         case T_NS:
 384         case T_CNAME:
 385         case T_PTR:
 386 #ifdef T_DNAME
 387         case T_DNAME:
 388 #endif
 389                 putchar(' ');
 390                 if (ns_nprint(cp, bp) == NULL)
 391                         return(NULL);
 392                 break;
 393
 394         case T_SOA:
 395                 if (!vflag)
 396                         break;
 397                 putchar(' ');
 398                 if ((cp = ns_nprint(cp, bp)) == NULL)
 399                         return(NULL);
 400                 putchar(' ');
 401                 if ((cp = ns_nprint(cp, bp)) == NULL)
 402                         return(NULL);
 403                 if (!TTEST2(*cp, 5 * 4))
 404                         return(NULL);
 405                 printf(" %u", EXTRACT_32BITS(cp));
 406                 cp += 4;
 407                 printf(" %u", EXTRACT_32BITS(cp));
 408                 cp += 4;
 409                 printf(" %u", EXTRACT_32BITS(cp));
 410                 cp += 4;
 411                 printf(" %u", EXTRACT_32BITS(cp));
 412                 cp += 4;
 413                 printf(" %u", EXTRACT_32BITS(cp));
 414                 cp += 4;
 415                 break;
 416         case T_MX:
 417                 putchar(' ');
 418                 if (!TTEST2(*cp, 2))
 419                         return(NULL);
 420                 if (ns_nprint(cp + 2, bp) == NULL)
 421                         return(NULL);
 422                 printf(" %d", EXTRACT_16BITS(cp));
 423                 break;
 424
 425         case T_TXT:
 426                 while (cp < rp) {
 427                         printf(" \"");
 428                         cp = ns_cprint(cp);
 429                         if (cp == NULL)
 430                                 return(NULL);
 431                         putchar('"');
 432                 }
 433                 break;
 434
 435         case T_SRV:
 436                 putchar(' ');
 437                 if (!TTEST2(*cp, 6))
 438                         return(NULL);
 439                 if (ns_nprint(cp + 6, bp) == NULL)
 440                         return(NULL);
 441                 printf(":%d %d %d", EXTRACT_16BITS(cp + 4),
 442                         EXTRACT_16BITS(cp), EXTRACT_16BITS(cp + 2));
 443                 break;
 444
 445 #ifdef INET6
 446         case T_AAAA:
 447                 if (!TTEST2(*cp, sizeof(struct in6_addr)))
 448                         return(NULL);
 449                 printf(" %s", ip6addr_string(cp));
 450                 break;
 451
 452         case T_A6:
 453             {
 454                 struct in6_addr a;
 455                 int pbit, pbyte;
 456
 457                 if (!TTEST2(*cp, 1))
 458                         return(NULL);
 459                 pbit = *cp;
 460                 pbyte = (pbit & ~7) / 8;
 461                 if (pbit > 128) {
 462                         printf(" %u(bad plen)", pbit);
 463                         break;
 464                 } else if (pbit < 128) {
 465                         if (!TTEST2(*(cp + 1), sizeof(a) - pbyte))
 466                                 return(NULL);
 467                         memset(&a, 0, sizeof(a));
 468                         memcpy(&a.s6_addr[pbyte], cp + 1, sizeof(a) - pbyte);
 469                         printf(" %u %s", pbit, ip6addr_string(&a));
 470                 }
 471                 if (pbit > 0) {
 472                         putchar(' ');
 473                         if (ns_nprint(cp + 1 + sizeof(a) - pbyte, bp) == NULL)
 474                                 return(NULL);
 475                 }
 476                 break;
 477             }
 478 #endif /*INET6*/
 479
 480         case T_OPT:
 481                 printf(" UDPsize=%u", class);
 482                 break;
 483
 484         case T_UNSPECA:         /* One long string */
 485                 if (!TTEST2(*cp, len))
 486                         return(NULL);
 487                 if (fn_printn(cp, len, snapend))
 488                         return(NULL);
 489                 break;
 490
 491         case T_TSIG:
 492             {
 493                 if (cp + len > snapend)
 494                         return(NULL);
 495                 if (!vflag)
 496                         break;
 497                 putchar(' ');
 498                 if ((cp = ns_nprint(cp, bp)) == NULL)
 499                         return(NULL);
 500                 cp += 6;
 501                 if (!TTEST2(*cp, 2))
 502                         return(NULL);
 503                 printf(" fudge=%u", EXTRACT_16BITS(cp));
 504                 cp += 2;
 505                 if (!TTEST2(*cp, 2))
 506                         return(NULL);
 507                 printf(" maclen=%u", EXTRACT_16BITS(cp));
 508                 cp += 2 + EXTRACT_16BITS(cp);
 509                 if (!TTEST2(*cp, 2))
 510                         return(NULL);
 511                 printf(" origid=%u", EXTRACT_16BITS(cp));
 512                 cp += 2;
 513                 if (!TTEST2(*cp, 2))
 514                         return(NULL);
 515                 printf(" error=%u", EXTRACT_16BITS(cp));
 516                 cp += 2;
 517                 if (!TTEST2(*cp, 2))
 518                         return(NULL);
 519                 printf(" otherlen=%u", EXTRACT_16BITS(cp));
 520                 cp += 2;
 521             }
 522         }
 523         return (rp);            /* XXX This isn't always right */
 524 }
 525
 526 void
 527 ns_print(register const u_char *bp, u_int length, int is_mdns)
 528 {
 529         register const HEADER *np;
 530         register int qdcount, ancount, nscount, arcount;
 531         register const u_char *cp;
 532         u_int16_t b2;
 533
 534         np = (const HEADER *)bp;
 535         TCHECK(*np);
 536         /* get the byte-order right */
 537         qdcount = EXTRACT_16BITS(&np->qdcount);
 538         ancount = EXTRACT_16BITS(&np->ancount);
 539         nscount = EXTRACT_16BITS(&np->nscount);
 540         arcount = EXTRACT_16BITS(&np->arcount);
 541
 542         if (DNS_QR(np)) {
 543                 /* this is a response */
 544                 printf(" %d%s%s%s%s%s%s",
 545                         EXTRACT_16BITS(&np->id),
 546                         ns_ops[DNS_OPCODE(np)],
 547                         ns_resp[DNS_RCODE(np)],
 548                         DNS_AA(np)? "*" : "",
 549                         DNS_RA(np)? "" : "-",
 550                         DNS_TC(np)? "|" : "",
 551                         DNS_AD(np)? "$" : "");
 552
 553                 if (qdcount != 1)
 554                         printf(" [%dq]", qdcount);
 555                 /* Print QUESTION section on -vv */
 556                 cp = (const u_char *)(np + 1);
 557                 while (qdcount--) {
 558                         if (qdcount < EXTRACT_16BITS(&np->qdcount) - 1)
 559                                 putchar(',');
 560                         if (vflag > 1) {
 561                                 fputs(" q:", stdout);
 562                                 if ((cp = ns_qprint(cp, bp, is_mdns)) == NULL)
 563                                         goto trunc;
 564                         } else {
 565                                 if ((cp = ns_nskip(cp)) == NULL)
 566                                         goto trunc;
 567                                 cp += 4;        /* skip QTYPE and QCLASS */
 568                         }
 569                 }
 570                 printf(" %d/%d/%d", ancount, nscount, arcount);
 571                 if (ancount--) {
 572                         if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
 573                                 goto trunc;
 574                         while (cp < snapend && ancount--) {
 575                                 putchar(',');
 576                                 if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
 577                                         goto trunc;
 578                         }
 579                 }
 580                 if (ancount > 0)
 581                         goto trunc;
 582                 /* Print NS and AR sections on -vv */
 583                 if (vflag > 1) {
 584                         if (cp < snapend && nscount--) {
 585                                 fputs(" ns:", stdout);
 586                                 if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
 587                                         goto trunc;
 588                                 while (cp < snapend && nscount--) {
 589                                         putchar(',');
 590                                         if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
 591                                                 goto trunc;
 592                                 }
 593                         }
 594                         if (nscount > 0)
 595                                 goto trunc;
 596                         if (cp < snapend && arcount--) {
 597                                 fputs(" ar:", stdout);
 598                                 if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
 599                                         goto trunc;
 600                                 while (cp < snapend && arcount--) {
 601                                         putchar(',');
 602                                         if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
 603                                                 goto trunc;
 604                                 }
 605                         }
 606                         if (arcount > 0)
 607                                 goto trunc;
 608                 }
 609         }
 610         else {
 611                 /* this is a request */
 612                 printf(" %d%s%s%s", EXTRACT_16BITS(&np->id), ns_ops[DNS_OPCODE(np)],
 613                     DNS_RD(np) ? "+" : "",
 614                     DNS_CD(np) ? "%" : "");
 615
 616                 /* any weirdness? */
 617                 b2 = EXTRACT_16BITS(((u_short *)np)+1);
 618                 if (b2 & 0x6cf)
 619                         printf(" [b2&3=0x%x]", b2);
 620
 621                 if (DNS_OPCODE(np) == IQUERY) {
 622                         if (qdcount)
 623                                 printf(" [%dq]", qdcount);
 624                         if (ancount != 1)
 625                                 printf(" [%da]", ancount);
 626                 }
 627                 else {
 628                         if (ancount)
 629                                 printf(" [%da]", ancount);
 630                         if (qdcount != 1)
 631                                 printf(" [%dq]", qdcount);
 632                 }
 633                 if (nscount)
 634                         printf(" [%dn]", nscount);
 635                 if (arcount)
 636                         printf(" [%dau]", arcount);
 637
 638                 cp = (const u_char *)(np + 1);
 639                 if (qdcount--) {
 640                         cp = ns_qprint(cp, (const u_char *)np, is_mdns);
 641                         if (!cp)
 642                                 goto trunc;
 643                         while (cp < snapend && qdcount--) {
 644                                 cp = ns_qprint((const u_char *)cp,
 645                                                (const u_char *)np,
 646                                                is_mdns);
 647                                 if (!cp)
 648                                         goto trunc;
 649                         }
 650                 }
 651                 if (qdcount > 0)
 652                         goto trunc;
 653
 654                 /* Print remaining sections on -vv */
 655                 if (vflag > 1) {
 656                         if (ancount--) {
 657                                 if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
 658                                         goto trunc;
 659                                 while (cp < snapend && ancount--) {
 660                                         putchar(',');
 661                                         if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
 662                                                 goto trunc;
 663                                 }
 664                         }
 665                         if (ancount > 0)
 666                                 goto trunc;
 667                         if (cp < snapend && nscount--) {
 668                                 fputs(" ns:", stdout);
 669                                 if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
 670                                         goto trunc;
 671                                 while (nscount-- && cp < snapend) {
 672                                         putchar(',');
 673                                         if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
 674                                                 goto trunc;
 675                                 }
 676                         }
 677                         if (nscount > 0)
 678                                 goto trunc;
 679                         if (cp < snapend && arcount--) {
 680                                 fputs(" ar:", stdout);
 681                                 if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
 682                                         goto trunc;
 683                                 while (cp < snapend && arcount--) {
 684                                         putchar(',');
 685                                         if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
 686                                                 goto trunc;
 687                                 }
 688                         }
 689                         if (arcount > 0)
 690                                 goto trunc;
 691                 }
 692         }
 693         printf(" (%d)", length);
 694         return;
 695
 696   trunc:
 697         printf("[|domain]");
 698         return;
 699 }