d4a35d8c8494b6bad6ecb756858347d796ef304d
[dragonfly.git] / contrib / tcpdump-3.9 / 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
22 #ifndef lint
23 static const char rcsid[] _U_ =
24     "@(#) $Header: /tcpdump/master/tcpdump/print-domain.c,v 1.89.2.8 2007/02/13 19:19:27 guy Exp $ (LBL)";
25 #endif
26
27 #ifdef HAVE_CONFIG_H
28 #include "config.h"
29 #endif
30
31 #include <tcpdump-stdinc.h>
32
33 #include "nameser.h"
34
35 #include <stdio.h>
36 #include <string.h>
37
38 #include "interface.h"
39 #include "addrtoname.h"
40 #include "extract.h"                    /* must come after interface.h */
41
42 static const char *ns_ops[] = {
43         "", " inv_q", " stat", " op3", " notify", " update", " op6", " op7",
44         " op8", " updataA", " updateD", " updateDA",
45         " updateM", " updateMA", " zoneInit", " zoneRef",
46 };
47
48 static const char *ns_resp[] = {
49         "", " FormErr", " ServFail", " NXDomain",
50         " NotImp", " Refused", " YXDomain", " YXRRSet",
51         " NXRRSet", " NotAuth", " NotZone", " Resp11",
52         " Resp12", " Resp13", " Resp14", " NoChange",
53 };
54
55 /* skip over a domain name */
56 static const u_char *
57 ns_nskip(register const u_char *cp)
58 {
59         register u_char i;
60
61         if (!TTEST2(*cp, 1))
62                 return (NULL);
63         i = *cp++;
64         while (i) {
65                 if ((i & INDIR_MASK) == INDIR_MASK)
66                         return (cp + 1);
67                 if ((i & INDIR_MASK) == EDNS0_MASK) {
68                         int bitlen, bytelen;
69
70                         if ((i & ~INDIR_MASK) != EDNS0_ELT_BITLABEL)
71                                 return(NULL); /* unknown ELT */
72                         if (!TTEST2(*cp, 1))
73                                 return (NULL);
74                         if ((bitlen = *cp++) == 0)
75                                 bitlen = 256;
76                         bytelen = (bitlen + 7) / 8;
77                         cp += bytelen;
78                 } else
79                         cp += i;
80                 if (!TTEST2(*cp, 1))
81                         return (NULL);
82                 i = *cp++;
83         }
84         return (cp);
85 }
86
87 /* print a <domain-name> */
88 static const u_char *
89 blabel_print(const u_char *cp)
90 {
91         int bitlen, slen, b;
92         const u_char *bitp, *lim;
93         char tc;
94
95         if (!TTEST2(*cp, 1))
96                 return(NULL);
97         if ((bitlen = *cp) == 0)
98                 bitlen = 256;
99         slen = (bitlen + 3) / 4;
100         lim = cp + 1 + slen;
101
102         /* print the bit string as a hex string */
103         printf("\\[x");
104         for (bitp = cp + 1, b = bitlen; bitp < lim && b > 7; b -= 8, bitp++) {
105                 TCHECK(*bitp);
106                 printf("%02x", *bitp);
107         }
108         if (b > 4) {
109                 TCHECK(*bitp);
110                 tc = *bitp++;
111                 printf("%02x", tc & (0xff << (8 - b)));
112         } else if (b > 0) {
113                 TCHECK(*bitp);
114                 tc = *bitp++;
115                 printf("%1x", ((tc >> 4) & 0x0f) & (0x0f << (4 - b)));
116         }
117         printf("/%d]", bitlen);
118         return lim;
119 trunc:
120         printf(".../%d]", bitlen);
121         return NULL;
122 }
123
124 static int
125 labellen(const u_char *cp)
126 {
127         register u_int i;
128
129         if (!TTEST2(*cp, 1))
130                 return(-1);
131         i = *cp;
132         if ((i & INDIR_MASK) == EDNS0_MASK) {
133                 int bitlen, elt;
134                 if ((elt = (i & ~INDIR_MASK)) != EDNS0_ELT_BITLABEL) {
135                         printf("<ELT %d>", elt);
136                         return(-1);
137                 }
138                 if (!TTEST2(*(cp + 1), 1))
139                         return(-1);
140                 if ((bitlen = *(cp + 1)) == 0)
141                         bitlen = 256;
142                 return(((bitlen + 7) / 8) + 1);
143         } else
144                 return(i);
145 }
146
147 static const u_char *
148 ns_nprint(register const u_char *cp, register const u_char *bp)
149 {
150         register u_int i, l;
151         register const u_char *rp = NULL;
152         register int compress = 0;
153         int chars_processed;
154         int elt;
155         int data_size = snapend - bp;
156
157         if ((l = labellen(cp)) == (u_int)-1)
158                 return(NULL);
159         if (!TTEST2(*cp, 1))
160                 return(NULL);
161         chars_processed = 1;
162         if (((i = *cp++) & INDIR_MASK) != INDIR_MASK) {
163                 compress = 0;
164                 rp = cp + l;
165         }
166
167         if (i != 0)
168                 while (i && cp < snapend) {
169                         if ((i & INDIR_MASK) == INDIR_MASK) {
170                                 if (!compress) {
171                                         rp = cp + 1;
172                                         compress = 1;
173                                 }
174                                 if (!TTEST2(*cp, 1))
175                                         return(NULL);
176                                 cp = bp + (((i << 8) | *cp) & 0x3fff);
177                                 if ((l = labellen(cp)) == (u_int)-1)
178                                         return(NULL);
179                                 if (!TTEST2(*cp, 1))
180                                         return(NULL);
181                                 i = *cp++;
182                                 chars_processed++;
183
184                                 /*
185                                  * If we've looked at every character in
186                                  * the message, this pointer will make
187                                  * us look at some character again,
188                                  * which means we're looping.
189                                  */
190                                 if (chars_processed >= data_size) {
191                                         printf("<LOOP>");
192                                         return (NULL);
193                                 }
194                                 continue;
195                         }
196                         if ((i & INDIR_MASK) == EDNS0_MASK) {
197                                 elt = (i & ~INDIR_MASK);
198                                 switch(elt) {
199                                 case EDNS0_ELT_BITLABEL:
200                                         if (blabel_print(cp) == NULL)
201                                                 return (NULL);
202                                         break;
203                                 default:
204                                         /* unknown ELT */
205                                         printf("<ELT %d>", elt);
206                                         return(NULL);
207                                 }
208                         } else {
209                                 if (fn_printn(cp, l, snapend))
210                                         return(NULL);
211                         }
212
213                         cp += l;
214                         chars_processed += l;
215                         putchar('.');
216                         if ((l = labellen(cp)) == (u_int)-1)
217                                 return(NULL);
218                         if (!TTEST2(*cp, 1))
219                                 return(NULL);
220                         i = *cp++;
221                         chars_processed++;
222                         if (!compress)
223                                 rp += l + 1;
224                 }
225         else
226                 putchar('.');
227         return (rp);
228 }
229
230 /* print a <character-string> */
231 static const u_char *
232 ns_cprint(register const u_char *cp)
233 {
234         register u_int i;
235
236         if (!TTEST2(*cp, 1))
237                 return (NULL);
238         i = *cp++;
239         if (fn_printn(cp, i, snapend))
240                 return (NULL);
241         return (cp + i);
242 }
243
244 /* http://www.iana.org/assignments/dns-parameters */
245 struct tok ns_type2str[] = {
246         { T_A,          "A" },                  /* RFC 1035 */
247         { T_NS,         "NS" },                 /* RFC 1035 */
248         { T_MD,         "MD" },                 /* RFC 1035 */
249         { T_MF,         "MF" },                 /* RFC 1035 */
250         { T_CNAME,      "CNAME" },              /* RFC 1035 */
251         { T_SOA,        "SOA" },                /* RFC 1035 */
252         { T_MB,         "MB" },                 /* RFC 1035 */
253         { T_MG,         "MG" },                 /* RFC 1035 */
254         { T_MR,         "MR" },                 /* RFC 1035 */
255         { T_NULL,       "NULL" },               /* RFC 1035 */
256         { T_WKS,        "WKS" },                /* RFC 1035 */
257         { T_PTR,        "PTR" },                /* RFC 1035 */
258         { T_HINFO,      "HINFO" },              /* RFC 1035 */
259         { T_MINFO,      "MINFO" },              /* RFC 1035 */
260         { T_MX,         "MX" },                 /* RFC 1035 */
261         { T_TXT,        "TXT" },                /* RFC 1035 */
262         { T_RP,         "RP" },                 /* RFC 1183 */
263         { T_AFSDB,      "AFSDB" },              /* RFC 1183 */
264         { T_X25,        "X25" },                /* RFC 1183 */
265         { T_ISDN,       "ISDN" },               /* RFC 1183 */
266         { T_RT,         "RT" },                 /* RFC 1183 */
267         { T_NSAP,       "NSAP" },               /* RFC 1706 */
268         { T_NSAP_PTR,   "NSAP_PTR" },
269         { T_SIG,        "SIG" },                /* RFC 2535 */
270         { T_KEY,        "KEY" },                /* RFC 2535 */
271         { T_PX,         "PX" },                 /* RFC 2163 */
272         { T_GPOS,       "GPOS" },               /* RFC 1712 */
273         { T_AAAA,       "AAAA" },               /* RFC 1886 */
274         { T_LOC,        "LOC" },                /* RFC 1876 */
275         { T_NXT,        "NXT" },                /* RFC 2535 */
276         { T_EID,        "EID" },                /* Nimrod */
277         { T_NIMLOC,     "NIMLOC" },             /* Nimrod */
278         { T_SRV,        "SRV" },                /* RFC 2782 */
279         { T_ATMA,       "ATMA" },               /* ATM Forum */
280         { T_NAPTR,      "NAPTR" },              /* RFC 2168, RFC 2915 */
281         { T_KX,         "KX" },                 /* RFC 2230 */
282         { T_CERT,       "CERT" },               /* RFC 2538 */
283         { T_A6,         "A6" },                 /* RFC 2874 */
284         { T_DNAME,      "DNAME" },              /* RFC 2672 */
285         { T_SINK,       "SINK" },
286         { T_OPT,        "OPT" },                /* RFC 2671 */
287         { T_APL,        "APL" },                /* RFC 3123 */
288         { T_DS,         "DS" },                 /* RFC 4034 */
289         { T_SSHFP,      "SSHFP" },              /* RFC 4255 */
290         { T_IPSECKEY,   "IPSECKEY" },           /* RFC 4025 */
291         { T_RRSIG,      "RRSIG" },              /* RFC 4034 */
292         { T_NSEC,       "NSEC" },               /* RFC 4034 */
293         { T_DNSKEY,     "DNSKEY" },             /* RFC 4034 */
294         { T_SPF,        "SPF" },                /* RFC-schlitt-spf-classic-02.txt */
295         { T_UINFO,      "UINFO" },
296         { T_UID,        "UID" },
297         { T_GID,        "GID" },
298         { T_UNSPEC,     "UNSPEC" },
299         { T_UNSPECA,    "UNSPECA" },
300         { T_TKEY,       "TKEY" },               /* RFC 2930 */
301         { T_TSIG,       "TSIG" },               /* RFC 2845 */
302         { T_IXFR,       "IXFR" },               /* RFC 1995 */
303         { T_AXFR,       "AXFR" },               /* RFC 1035 */
304         { T_MAILB,      "MAILB" },              /* RFC 1035 */
305         { T_MAILA,      "MAILA" },              /* RFC 1035 */
306         { T_ANY,        "ANY" },
307         { 0,            NULL }
308 };
309
310 struct tok ns_class2str[] = {
311         { C_IN,         "IN" },         /* Not used */
312         { C_CHAOS,      "CHAOS" },
313         { C_HS,         "HS" },
314         { C_ANY,        "ANY" },
315         { 0,            NULL }
316 };
317
318 /* print a query */
319 static const u_char *
320 ns_qprint(register const u_char *cp, register const u_char *bp, int is_mdns)
321 {
322         register const u_char *np = cp;
323         register u_int i, class;
324
325         cp = ns_nskip(cp);
326
327         if (cp == NULL || !TTEST2(*cp, 4))
328                 return(NULL);
329
330         /* print the qtype */
331         i = EXTRACT_16BITS(cp);
332         cp += 2;
333         printf(" %s", tok2str(ns_type2str, "Type%d", i));
334         /* print the qclass (if it's not IN) */
335         i = EXTRACT_16BITS(cp);
336         cp += 2;
337         if (is_mdns)
338                 class = (i & ~C_QU);
339         else
340                 class = i;
341         if (class != C_IN)
342                 printf(" %s", tok2str(ns_class2str, "(Class %d)", class));
343         if (is_mdns) {
344                 if (i & C_QU)
345                         printf(" (QU)");
346                 else
347                         printf(" (QM)");
348         }
349
350         fputs("? ", stdout);
351         cp = ns_nprint(np, bp);
352         return(cp ? cp + 4 : NULL);
353 }
354
355 /* print a reply */
356 static const u_char *
357 ns_rprint(register const u_char *cp, register const u_char *bp, int is_mdns)
358 {
359         register u_int i, class, opt_flags = 0;
360         register u_short typ, len;
361         register const u_char *rp;
362
363         if (vflag) {
364                 putchar(' ');
365                 if ((cp = ns_nprint(cp, bp)) == NULL)
366                         return NULL;
367         } else
368                 cp = ns_nskip(cp);
369
370         if (cp == NULL || !TTEST2(*cp, 10))
371                 return (snapend);
372
373         /* print the type/qtype */
374         typ = EXTRACT_16BITS(cp);
375         cp += 2;
376         /* print the class (if it's not IN and the type isn't OPT) */
377         i = EXTRACT_16BITS(cp);
378         cp += 2;
379         if (is_mdns)
380                 class = (i & ~C_CACHE_FLUSH);
381         else
382                 class = i;
383         if (class != C_IN && typ != T_OPT)
384                 printf(" %s", tok2str(ns_class2str, "(Class %d)", class));
385         if (is_mdns) {
386                 if (i & C_CACHE_FLUSH)
387                         printf(" (Cache flush)");
388         }
389
390         /* ignore ttl */
391         cp += 2;
392         /* if T_OPT, save opt_flags */
393         if (typ == T_OPT)
394                 opt_flags = EXTRACT_16BITS(cp);
395         /* ignore rest of ttl */
396         cp += 2;
397
398         len = EXTRACT_16BITS(cp);
399         cp += 2;
400
401         rp = cp + len;
402
403         printf(" %s", tok2str(ns_type2str, "Type%d", typ));
404         if (rp > snapend)
405                 return(NULL);
406
407         switch (typ) {
408         case T_A:
409                 if (!TTEST2(*cp, sizeof(struct in_addr)))
410                         return(NULL);
411                 printf(" %s", ipaddr_string(cp));
412                 break;
413
414         case T_NS:
415         case T_CNAME:
416         case T_PTR:
417 #ifdef T_DNAME
418         case T_DNAME:
419 #endif
420                 putchar(' ');
421                 if (ns_nprint(cp, bp) == NULL)
422                         return(NULL);
423                 break;
424
425         case T_SOA:
426                 if (!vflag)
427                         break;
428                 putchar(' ');
429                 if ((cp = ns_nprint(cp, bp)) == NULL)
430                         return(NULL);
431                 putchar(' ');
432                 if ((cp = ns_nprint(cp, bp)) == NULL)
433                         return(NULL);
434                 if (!TTEST2(*cp, 5 * 4))
435                         return(NULL);
436                 printf(" %u", EXTRACT_32BITS(cp));
437                 cp += 4;
438                 printf(" %u", EXTRACT_32BITS(cp));
439                 cp += 4;
440                 printf(" %u", EXTRACT_32BITS(cp));
441                 cp += 4;
442                 printf(" %u", EXTRACT_32BITS(cp));
443                 cp += 4;
444                 printf(" %u", EXTRACT_32BITS(cp));
445                 cp += 4;
446                 break;
447         case T_MX:
448                 putchar(' ');
449                 if (!TTEST2(*cp, 2))
450                         return(NULL);
451                 if (ns_nprint(cp + 2, bp) == NULL)
452                         return(NULL);
453                 printf(" %d", EXTRACT_16BITS(cp));
454                 break;
455
456         case T_TXT:
457                 while (cp < rp) {
458                         printf(" \"");
459                         cp = ns_cprint(cp);
460                         if (cp == NULL)
461                                 return(NULL);
462                         putchar('"');
463                 }
464                 break;
465
466         case T_SRV:
467                 putchar(' ');
468                 if (!TTEST2(*cp, 6))
469                         return(NULL);
470                 if (ns_nprint(cp + 6, bp) == NULL)
471                         return(NULL);
472                 printf(":%d %d %d", EXTRACT_16BITS(cp + 4),
473                         EXTRACT_16BITS(cp), EXTRACT_16BITS(cp + 2));
474                 break;
475
476 #ifdef INET6
477         case T_AAAA:
478                 if (!TTEST2(*cp, sizeof(struct in6_addr)))
479                         return(NULL);
480                 printf(" %s", ip6addr_string(cp));
481                 break;
482
483         case T_A6:
484             {
485                 struct in6_addr a;
486                 int pbit, pbyte;
487
488                 if (!TTEST2(*cp, 1))
489                         return(NULL);
490                 pbit = *cp;
491                 pbyte = (pbit & ~7) / 8;
492                 if (pbit > 128) {
493                         printf(" %u(bad plen)", pbit);
494                         break;
495                 } else if (pbit < 128) {
496                         if (!TTEST2(*(cp + 1), sizeof(a) - pbyte))
497                                 return(NULL);
498                         memset(&a, 0, sizeof(a));
499                         memcpy(&a.s6_addr[pbyte], cp + 1, sizeof(a) - pbyte);
500                         printf(" %u %s", pbit, ip6addr_string(&a));
501                 }
502                 if (pbit > 0) {
503                         putchar(' ');
504                         if (ns_nprint(cp + 1 + sizeof(a) - pbyte, bp) == NULL)
505                                 return(NULL);
506                 }
507                 break;
508             }
509 #endif /*INET6*/
510
511         case T_OPT:
512                 printf(" UDPsize=%u", class);
513                 if (opt_flags & 0x8000)
514                         printf(" OK");
515                 break;
516
517         case T_UNSPECA:         /* One long string */
518                 if (!TTEST2(*cp, len))
519                         return(NULL);
520                 if (fn_printn(cp, len, snapend))
521                         return(NULL);
522                 break;
523
524         case T_TSIG:
525             {
526                 if (cp + len > snapend)
527                         return(NULL);
528                 if (!vflag)
529                         break;
530                 putchar(' ');
531                 if ((cp = ns_nprint(cp, bp)) == NULL)
532                         return(NULL);
533                 cp += 6;
534                 if (!TTEST2(*cp, 2))
535                         return(NULL);
536                 printf(" fudge=%u", EXTRACT_16BITS(cp));
537                 cp += 2;
538                 if (!TTEST2(*cp, 2))
539                         return(NULL);
540                 printf(" maclen=%u", EXTRACT_16BITS(cp));
541                 cp += 2 + EXTRACT_16BITS(cp);
542                 if (!TTEST2(*cp, 2))
543                         return(NULL);
544                 printf(" origid=%u", EXTRACT_16BITS(cp));
545                 cp += 2;
546                 if (!TTEST2(*cp, 2))
547                         return(NULL);
548                 printf(" error=%u", EXTRACT_16BITS(cp));
549                 cp += 2;
550                 if (!TTEST2(*cp, 2))
551                         return(NULL);
552                 printf(" otherlen=%u", EXTRACT_16BITS(cp));
553                 cp += 2;
554             }
555         }
556         return (rp);            /* XXX This isn't always right */
557 }
558
559 void
560 ns_print(register const u_char *bp, u_int length, int is_mdns)
561 {
562         register const HEADER *np;
563         register int qdcount, ancount, nscount, arcount;
564         register const u_char *cp;
565         u_int16_t b2;
566
567         np = (const HEADER *)bp;
568         TCHECK(*np);
569         /* get the byte-order right */
570         qdcount = EXTRACT_16BITS(&np->qdcount);
571         ancount = EXTRACT_16BITS(&np->ancount);
572         nscount = EXTRACT_16BITS(&np->nscount);
573         arcount = EXTRACT_16BITS(&np->arcount);
574
575         if (DNS_QR(np)) {
576                 /* this is a response */
577                 printf("%d%s%s%s%s%s%s",
578                         EXTRACT_16BITS(&np->id),
579                         ns_ops[DNS_OPCODE(np)],
580                         ns_resp[DNS_RCODE(np)],
581                         DNS_AA(np)? "*" : "",
582                         DNS_RA(np)? "" : "-",
583                         DNS_TC(np)? "|" : "",
584                         DNS_AD(np)? "$" : "");
585
586                 if (qdcount != 1)
587                         printf(" [%dq]", qdcount);
588                 /* Print QUESTION section on -vv */
589                 cp = (const u_char *)(np + 1);
590                 while (qdcount--) {
591                         if (qdcount < EXTRACT_16BITS(&np->qdcount) - 1)
592                                 putchar(',');
593                         if (vflag > 1) {
594                                 fputs(" q:", stdout);
595                                 if ((cp = ns_qprint(cp, bp, is_mdns)) == NULL)
596                                         goto trunc;
597                         } else {
598                                 if ((cp = ns_nskip(cp)) == NULL)
599                                         goto trunc;
600                                 cp += 4;        /* skip QTYPE and QCLASS */
601                         }
602                 }
603                 printf(" %d/%d/%d", ancount, nscount, arcount);
604                 if (ancount--) {
605                         if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
606                                 goto trunc;
607                         while (cp < snapend && ancount--) {
608                                 putchar(',');
609                                 if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
610                                         goto trunc;
611                         }
612                 }
613                 if (ancount > 0)
614                         goto trunc;
615                 /* Print NS and AR sections on -vv */
616                 if (vflag > 1) {
617                         if (cp < snapend && nscount--) {
618                                 fputs(" ns:", stdout);
619                                 if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
620                                         goto trunc;
621                                 while (cp < snapend && nscount--) {
622                                         putchar(',');
623                                         if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
624                                                 goto trunc;
625                                 }
626                         }
627                         if (nscount > 0)
628                                 goto trunc;
629                         if (cp < snapend && arcount--) {
630                                 fputs(" ar:", stdout);
631                                 if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
632                                         goto trunc;
633                                 while (cp < snapend && arcount--) {
634                                         putchar(',');
635                                         if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
636                                                 goto trunc;
637                                 }
638                         }
639                         if (arcount > 0)
640                                 goto trunc;
641                 }
642         }
643         else {
644                 /* this is a request */
645                 printf("%d%s%s%s", EXTRACT_16BITS(&np->id), ns_ops[DNS_OPCODE(np)],
646                     DNS_RD(np) ? "+" : "",
647                     DNS_CD(np) ? "%" : "");
648
649                 /* any weirdness? */
650                 b2 = EXTRACT_16BITS(((u_short *)np)+1);
651                 if (b2 & 0x6cf)
652                         printf(" [b2&3=0x%x]", b2);
653
654                 if (DNS_OPCODE(np) == IQUERY) {
655                         if (qdcount)
656                                 printf(" [%dq]", qdcount);
657                         if (ancount != 1)
658                                 printf(" [%da]", ancount);
659                 }
660                 else {
661                         if (ancount)
662                                 printf(" [%da]", ancount);
663                         if (qdcount != 1)
664                                 printf(" [%dq]", qdcount);
665                 }
666                 if (nscount)
667                         printf(" [%dn]", nscount);
668                 if (arcount)
669                         printf(" [%dau]", arcount);
670
671                 cp = (const u_char *)(np + 1);
672                 if (qdcount--) {
673                         cp = ns_qprint(cp, (const u_char *)np, is_mdns);
674                         if (!cp)
675                                 goto trunc;
676                         while (cp < snapend && qdcount--) {
677                                 cp = ns_qprint((const u_char *)cp,
678                                                (const u_char *)np,
679                                                is_mdns);
680                                 if (!cp)
681                                         goto trunc;
682                         }
683                 }
684                 if (qdcount > 0)
685                         goto trunc;
686
687                 /* Print remaining sections on -vv */
688                 if (vflag > 1) {
689                         if (ancount--) {
690                                 if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
691                                         goto trunc;
692                                 while (cp < snapend && ancount--) {
693                                         putchar(',');
694                                         if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
695                                                 goto trunc;
696                                 }
697                         }
698                         if (ancount > 0)
699                                 goto trunc;
700                         if (cp < snapend && nscount--) {
701                                 fputs(" ns:", stdout);
702                                 if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
703                                         goto trunc;
704                                 while (nscount-- && cp < snapend) {
705                                         putchar(',');
706                                         if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
707                                                 goto trunc;
708                                 }
709                         }
710                         if (nscount > 0)
711                                 goto trunc;
712                         if (cp < snapend && arcount--) {
713                                 fputs(" ar:", stdout);
714                                 if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
715                                         goto trunc;
716                                 while (cp < snapend && arcount--) {
717                                         putchar(',');
718                                         if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL)
719                                                 goto trunc;
720                                 }
721                         }
722                         if (arcount > 0)
723                                 goto trunc;
724                 }
725         }
726         printf(" (%d)", length);
727         return;
728
729   trunc:
730         printf("[|domain]");
731         return;
732 }