summary refs log tree commit diff
path: root/resolv/res_debug.c
blob: dac878d721b5e135b2fdd833905eb7dabe2ba68d (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
/*
 * ++Copyright++ 1985, 1990, 1993
 * -
 * Copyright (c) 1985, 1990, 1993
 *    The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * -
 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies, and that
 * the name of Digital Equipment Corporation not be used in advertising or
 * publicity pertaining to distribution of the document or software without
 * specific, written prior permission.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 * SOFTWARE.
 * -
 * Portions Copyright (c) 1995 by International Business Machines, Inc.
 *
 * International Business Machines, Inc. (hereinafter called IBM) grants
 * permission under its copyrights to use, copy, modify, and distribute this
 * Software with or without fee, provided that the above copyright notice and
 * all paragraphs of this notice appear in all copies, and that the name of IBM
 * not be used in connection with the marketing of any product incorporating
 * the Software or modifications thereof, without specific, written prior
 * permission.
 *
 * To the extent it has a right to do so, IBM grants an immunity from suit
 * under its patents, if any, for the use, sale or manufacture of products to
 * the extent that such products are used for performing Domain Name System
 * dynamic updates in TCP/IP networks by means of the Software.  No immunity is
 * granted for any product per se or for any other function of any product.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE.  IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL,
 * DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING
 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN
 * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES.
 * --Copyright--
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)res_debug.c	8.1 (Berkeley) 6/4/93";
static char rcsid[] = "$Id$";
#endif /* LIBC_SCCS and not lint */

#include <sys/param.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <arpa/nameser.h>

#include <ctype.h>
#include <netdb.h>
#include <resolv.h>
#include <stdio.h>
#include <time.h>

#if defined(BSD) && (BSD >= 199103) && defined(AF_INET6)
# include <stdlib.h>
# include <string.h>
#else
# include "../conf/portability.h"
#endif

#if defined(USE_OPTIONS_H)
# include "../conf/options.h"
#endif

extern const char *_res_opcodes[];
extern const char *_res_resultcodes[];

/* XXX: we should use getservbyport() instead. */
static const char *
dewks(wks)
	int wks;
{
	static char nbuf[20];

	switch (wks) {
	case 5: return "rje";
	case 7: return "echo";
	case 9: return "discard";
	case 11: return "systat";
	case 13: return "daytime";
	case 15: return "netstat";
	case 17: return "qotd";
	case 19: return "chargen";
	case 20: return "ftp-data";
	case 21: return "ftp";
	case 23: return "telnet";
	case 25: return "smtp";
	case 37: return "time";
	case 39: return "rlp";
	case 42: return "name";
	case 43: return "whois";
	case 53: return "domain";
	case 57: return "apts";
	case 59: return "apfs";
	case 67: return "bootps";
	case 68: return "bootpc";
	case 69: return "tftp";
	case 77: return "rje";
	case 79: return "finger";
	case 87: return "link";
	case 95: return "supdup";
	case 100: return "newacct";
	case 101: return "hostnames";
	case 102: return "iso-tsap";
	case 103: return "x400";
	case 104: return "x400-snd";
	case 105: return "csnet-ns";
	case 109: return "pop-2";
	case 111: return "sunrpc";
	case 113: return "auth";
	case 115: return "sftp";
	case 117: return "uucp-path";
	case 119: return "nntp";
	case 121: return "erpc";
	case 123: return "ntp";
	case 133: return "statsrv";
	case 136: return "profile";
	case 144: return "NeWS";
	case 161: return "snmp";
	case 162: return "snmp-trap";
	case 170: return "print-srv";
	default: (void) sprintf(nbuf, "%d", wks); return (nbuf);
	}
}

/* XXX: we should use getprotobynumber() instead. */
static const char *
deproto(protonum)
	int protonum;
{
	static char nbuf[20];

	switch (protonum) {
	case 1: return "icmp";
	case 2: return "igmp";
	case 3: return "ggp";
	case 5: return "st";
	case 6: return "tcp";
	case 7: return "ucl";
	case 8: return "egp";
	case 9: return "igp";
	case 11: return "nvp-II";
	case 12: return "pup";
	case 16: return "chaos";
	case 17: return "udp";
	default: (void) sprintf(nbuf, "%d", protonum); return (nbuf);
	}
}

static const u_char *
do_rrset(msg, len, cp, cnt, pflag, file, hs)
	int cnt, pflag, len;
	const u_char *cp, *msg;
	const char *hs;
	FILE *file;
{
	int n;
	int sflag;

	/*
	 * Print answer records.
	 */
	sflag = (_res.pfcode & pflag);
	if ((n = ntohs(cnt))) {
		if ((!_res.pfcode) ||
		    ((sflag) && (_res.pfcode & RES_PRF_HEAD1)))
			fprintf(file, hs);
		while (--n >= 0) {
			if ((!_res.pfcode) || sflag) {
				cp = p_rr(cp, msg, file);
			} else {
				unsigned int dlen;
				cp += __dn_skipname(cp, cp + MAXCDNAME);
				cp += INT16SZ;
				cp += INT16SZ;
				cp += INT32SZ;
				dlen = _getshort((u_char*)cp);
				cp += INT16SZ;
				cp += dlen;
			}
			if ((cp - msg) > len)
				return (NULL);
		}
		if ((!_res.pfcode) ||
		    ((sflag) && (_res.pfcode & RES_PRF_HEAD1)))
			putc('\n', file);
	}
	return (cp);
}

void
__p_query(msg)
	const u_char *msg;
{
	__fp_query(msg, stdout);
}

#ifdef ultrix
#undef p_query
/* ultrix 4.0's packaging has some icky packaging.  alias for it here.
 * there is more junk of this kind over in res_comp.c.
 */
void
p_query(msg)
	const u_char *msg;
{
	__p_query(msg);
}
#endif

/*
 * Print the current options.
 * This is intended to be primarily a debugging routine.
 */
void
__fp_resstat(statp, file)
	struct __res_state *statp;
	FILE *file;
{
	register u_long mask;

	fprintf(file, ";; res options:");
	if (!statp)
		statp = &_res;
	for (mask = 1;  mask != 0;  mask <<= 1)
		if (statp->options & mask)
			fprintf(file, " %s", p_option(mask));
	putc('\n', file);
}

/*
 * Print the contents of a query.
 * This is intended to be primarily a debugging routine.
 */
void
__fp_nquery(msg, len, file)
	const u_char *msg;
	int len;
	FILE *file;
{
	register const u_char *cp, *endMark;
	register const HEADER *hp;
	register int n;

	if ((_res.options & RES_INIT) == 0 && res_init() == -1)
		return;

#define TruncTest(x) if (x > endMark) goto trunc
#define	ErrorTest(x) if (x == NULL) goto error

	/*
	 * Print header fields.
	 */
	hp = (HEADER *)msg;
	cp = msg + HFIXEDSZ;
	endMark = msg + len;
	if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEADX) || hp->rcode) {
		fprintf(file, ";; ->>HEADER<<- opcode: %s, status: %s, id: %d",
			_res_opcodes[hp->opcode],
			_res_resultcodes[hp->rcode],
			ntohs(hp->id));
		putc('\n', file);
	}
	if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEADX))
		putc(';', file);
	if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEAD2)) {
		fprintf(file, "; flags:");
		if (hp->qr)
			fprintf(file, " qr");
		if (hp->aa)
			fprintf(file, " aa");
		if (hp->tc)
			fprintf(file, " tc");
		if (hp->rd)
			fprintf(file, " rd");
		if (hp->ra)
			fprintf(file, " ra");
		if (hp->unused)
			fprintf(file, " UNUSED-BIT-ON");
		if (hp->ad)
			fprintf(file, " ad");
		if (hp->cd)
			fprintf(file, " cd");
	}
	if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEAD1)) {
		fprintf(file, "; Ques: %d", ntohs(hp->qdcount));
		fprintf(file, ", Ans: %d", ntohs(hp->ancount));
		fprintf(file, ", Auth: %d", ntohs(hp->nscount));
		fprintf(file, ", Addit: %d", ntohs(hp->arcount));
	}
	if ((!_res.pfcode) || (_res.pfcode &
		(RES_PRF_HEADX | RES_PRF_HEAD2 | RES_PRF_HEAD1))) {
		putc('\n',file);
	}
	/*
	 * Print question records.
	 */
	if ((n = ntohs(hp->qdcount))) {
		if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
			fprintf(file, ";; QUESTIONS:\n");
		while (--n >= 0) {
			if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
				fprintf(file, ";;\t");
			TruncTest(cp);
			if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
				cp = p_cdnname(cp, msg, len, file);
			else {
				int n;
				char name[MAXDNAME];

				if ((n = dn_expand(msg, msg+len, cp, name,
						sizeof name)) < 0)
					cp = NULL;
				else
					cp += n;
			}
			ErrorTest(cp);
			TruncTest(cp);
			if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
				fprintf(file, ", type = %s",
					__p_type(_getshort((u_char*)cp)));
			cp += INT16SZ;
			TruncTest(cp);
			if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
				fprintf(file, ", class = %s\n",
					__p_class(_getshort((u_char*)cp)));
			cp += INT16SZ;
			if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
				putc('\n', file);
		}
	}
	/*
	 * Print authoritative answer records
	 */
	TruncTest(cp);
	cp = do_rrset(msg, len, cp, hp->ancount, RES_PRF_ANS, file,
		      ";; ANSWERS:\n");
	ErrorTest(cp);

	/*
	 * print name server records
	 */
	TruncTest(cp);
	cp = do_rrset(msg, len, cp, hp->nscount, RES_PRF_AUTH, file,
		      ";; AUTHORITY RECORDS:\n");
	ErrorTest(cp);

	TruncTest(cp);
	/*
	 * print additional records
	 */
	cp = do_rrset(msg, len, cp, hp->arcount, RES_PRF_ADD, file,
		      ";; ADDITIONAL RECORDS:\n");
	ErrorTest(cp);
	return;
 trunc:
	fprintf(file, "\n;; ...truncated\n");
	return;
 error:
	fprintf(file, "\n;; ...malformed\n");
}

void
__fp_query(msg, file)
	const u_char *msg;
	FILE *file;
{
	fp_nquery(msg, PACKETSZ, file);
}

const u_char *
__p_cdnname(cp, msg, len, file)
	const u_char *cp, *msg;
	int len;
	FILE *file;
{
	char name[MAXDNAME];
	int n;

	if ((n = dn_expand(msg, msg + len, cp, name, sizeof name)) < 0)
		return (NULL);
	if (name[0] == '\0')
		putc('.', file);
	else
		fputs(name, file);
	return (cp + n);
}

const u_char *
__p_cdname(cp, msg, file)
	const u_char *cp, *msg;
	FILE *file;
{
	return (p_cdnname(cp, msg, PACKETSZ, file));
}


/* Return a fully-qualified domain name from a compressed name (with
   length supplied).  */

const u_char *
__p_fqnname(cp, msg, msglen, name, namelen)
	const u_char *cp, *msg;
	int msglen;
	char *name;
	int namelen;
{
	int n, newlen;

	if ((n = dn_expand(msg, cp + msglen, cp, name, namelen)) < 0)
		return (NULL);
	newlen = strlen (name);
	if (newlen == 0 || name[newlen - 1] != '.') {
		if (newlen+1 >= namelen)        /* Lack space for final dot */
			return (NULL);
		else
			strcpy(name + newlen, ".");
	}
	return (cp + n);
}

/* XXX:	the rest of these functions need to become length-limited, too. (vix)
 */

const u_char *
__p_fqname(cp, msg, file)
	const u_char *cp, *msg;
	FILE *file;
{
	char name[MAXDNAME];
	const u_char *n;

	n = __p_fqnname(cp, msg, MAXCDNAME, name, sizeof name);
	if (n == NULL)
		return (NULL);
	fputs(name, file);
	return (n);
}

/*
 * Print resource record fields in human readable form.
 */
const u_char *
__p_rr(cp, msg, file)
	const u_char *cp, *msg;
	FILE *file;
{
	int type, class, dlen, n, c;
	struct in_addr inaddr;
	const u_char *cp1, *cp2;
	u_int32_t tmpttl, t;
	int lcnt;
	u_int16_t keyflags;
	char rrname[MAXDNAME];          /* The fqdn of this RR */
	char base64_key[MAX_KEY_BASE64];

	if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
		__set_h_errno (NETDB_INTERNAL);
		return (NULL);
	}
	cp = __p_fqnname(cp, msg, MAXCDNAME, rrname, sizeof rrname);
	if (!cp)
		return (NULL);			/* compression error */
	fputs(rrname, file);

	type = _getshort((u_char*)cp);
	cp += INT16SZ;
	class = _getshort((u_char*)cp);
	cp += INT16SZ;
	tmpttl = _getlong((u_char*)cp);
	cp += INT32SZ;
	dlen = _getshort((u_char*)cp);
	cp += INT16SZ;
	cp1 = cp;
	if ((!_res.pfcode) || (_res.pfcode & RES_PRF_TTLID))
		fprintf(file, "\t%lu", (u_long)tmpttl);
	if ((!_res.pfcode) || (_res.pfcode & RES_PRF_CLASS))
		fprintf(file, "\t%s", __p_class(class));
	fprintf(file, "\t%s", __p_type(type));
	/*
	 * Print type specific data, if appropriate
	 */
	switch (type) {
	case T_A:
		switch (class) {
		case C_IN:
		case C_HS:
			bcopy(cp, (char *)&inaddr, INADDRSZ);
			if (dlen == 4) {
				fprintf(file, "\t%s", inet_ntoa(inaddr));
				cp += dlen;
			} else if (dlen == 7) {
				char *address;
				u_char protocol;
				u_short port;

				address = inet_ntoa(inaddr);
				cp += INADDRSZ;
				protocol = *(u_char*)cp;
				cp += sizeof (u_char);
				port = _getshort((u_char*)cp);
				cp += INT16SZ;
				fprintf(file, "\t%s\t; proto %d, port %d",
					address, protocol, port);
			}
			break;
		default:
			cp += dlen;
		}
		break;
	case T_CNAME:
	case T_MB:
	case T_MG:
	case T_MR:
	case T_NS:
	case T_PTR:
		putc('\t', file);
		if ((cp = p_fqname(cp, msg, file)) == NULL)
			return (NULL);
		break;

	case T_HINFO:
	case T_ISDN:
		cp2 = cp + dlen;
		(void) fputs("\t\"", file);
		if ((n = (unsigned char) *cp++) != 0) {
			for (c = n; c > 0 && cp < cp2; c--) {
				if (strchr("\n\"\\", *cp))
					(void) putc('\\', file);
				(void) putc(*cp++, file);
			}
		}
		putc('"', file);
		if (cp < cp2 && (n = (unsigned char) *cp++) != 0) {
			(void) fputs ("\t\"", file);
			for (c = n; c > 0 && cp < cp2; c--) {
				if (strchr("\n\"\\", *cp))
					(void) putc('\\', file);
				(void) putc(*cp++, file);
			}
			putc('"', file);
		} else if (type == T_HINFO) {
			(void) fputs("\"?\"", file);
			fprintf(file, "\n;; *** Warning *** OS-type missing");
		}
		break;

	case T_SOA:
		putc('\t', file);
		if ((cp = p_fqname(cp, msg, file)) == NULL)
			return (NULL);
		putc(' ', file);
		if ((cp = p_fqname(cp, msg, file)) == NULL)
			return (NULL);
		fputs(" (\n", file);
		t = _getlong((u_char*)cp);  cp += INT32SZ;
		fprintf(file, "\t\t\t%lu\t; serial\n", (u_long)t);
		t = _getlong((u_char*)cp);  cp += INT32SZ;
		fprintf(file, "\t\t\t%lu\t; refresh (%s)\n",
			(u_long)t, __p_time(t));
		t = _getlong((u_char*)cp);  cp += INT32SZ;
		fprintf(file, "\t\t\t%lu\t; retry (%s)\n",
			(u_long)t, __p_time(t));
		t = _getlong((u_char*)cp);  cp += INT32SZ;
		fprintf(file, "\t\t\t%lu\t; expire (%s)\n",
			(u_long)t, __p_time(t));
		t = _getlong((u_char*)cp);  cp += INT32SZ;
		fprintf(file, "\t\t\t%lu )\t; minimum (%s)",
			(u_long)t, __p_time(t));
		break;

	case T_MX:
	case T_AFSDB:
	case T_RT:
		fprintf(file, "\t%d ", _getshort((u_char*)cp));
		cp += INT16SZ;
		if ((cp = p_fqname(cp, msg, file)) == NULL)
			return (NULL);
		break;

	case T_PX:
		fprintf(file, "\t%d ", _getshort((u_char*)cp));
		cp += INT16SZ;
		if ((cp = p_fqname(cp, msg, file)) == NULL)
			return (NULL);
		putc(' ', file);
		if ((cp = p_fqname(cp, msg, file)) == NULL)
			return (NULL);
		break;

	case T_X25:
		cp2 = cp + dlen;
		(void) fputs("\t\"", file);
		if ((n = (unsigned char) *cp++) != 0) {
			for (c = n; c > 0 && cp < cp2; c--) {
				if (strchr("\n\"\\", *cp))
					(void) putc('\\', file);
				(void) putc(*cp++, file);
			}
		}
		putc('"', file);
		break;

	case T_TXT:
		(void) putc('\t', file);
		cp2 = cp1 + dlen;
		while (cp < cp2) {
			putc('"', file);
			if ((n = (unsigned char) *cp++)) {
				for (c = n; c > 0 && cp < cp2; c--) {
					if (strchr("\n\"\\", *cp))
						(void) putc('\\', file);
					(void) putc(*cp++, file);
				}
			}
			putc('"', file);
			if (cp < cp2)
				putc(' ', file);
		}
		break;

	case T_NSAP:
		(void) fprintf(file, "\t%s", inet_nsap_ntoa(dlen, cp, NULL));
		cp += dlen;
		break;

	case T_AAAA: {
		char t[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255"];

		fprintf(file, "\t%s", inet_ntop(AF_INET6, cp, t, sizeof t));
		cp += dlen;
		break;
	    }

	case T_LOC: {
		char t[255];

		(void) fprintf(file, "\t%s", loc_ntoa(cp, t));
		cp += dlen;
		break;
	    }

	case T_NAPTR: {
		u_int order, preference;

		order = _getshort(cp);  cp += INT16SZ;
		preference   = _getshort(cp);  cp += INT16SZ;
		fprintf(file, "\t%u %u ",order, preference);
		/* Flags */
		n = *cp++;
		fprintf(file,"\"%.*s\" ", (int)n, cp);
		cp += n;
		/* Service */
		n = *cp++;
		fprintf(file,"\"%.*s\" ", (int)n, cp);
		cp += n;
		/* Regexp */
		n = *cp++;
		fprintf(file,"\"%.*s\" ", (int)n, cp);
		cp += n;
		if ((cp = p_fqname(cp, msg, file)) == NULL)
			return (NULL);
		break;
	    }

	case T_SRV: {
		u_int priority, weight, port;

		priority = _getshort(cp);  cp += INT16SZ;
		weight   = _getshort(cp);  cp += INT16SZ;
		port     = _getshort(cp);  cp += INT16SZ;
		fprintf(file, "\t%u %u %u ", priority, weight, port);
		if ((cp = p_fqname(cp, msg, file)) == NULL)
			return (NULL);
		break;
	    }

	case T_MINFO:
	case T_RP:
		putc('\t', file);
		if ((cp = p_fqname(cp, msg, file)) == NULL)
			return (NULL);
		putc(' ', file);
		if ((cp = p_fqname(cp, msg, file)) == NULL)
			return (NULL);
		break;

	case T_UINFO:
		putc('\t', file);
		fputs((char *)cp, file);
		cp += dlen;
		break;

	case T_UID:
	case T_GID:
		if (dlen == 4) {
			fprintf(file, "\t%u", _getlong((u_char*)cp));
			cp += INT32SZ;
		}
		break;

	case T_WKS:
		if (dlen < INT32SZ + 1)
			break;
		bcopy(cp, (char *)&inaddr, INADDRSZ);
		cp += INT32SZ;
		fprintf(file, "\t%s %s ( ",
			inet_ntoa(inaddr),
			deproto((int) *cp));
		cp += sizeof (u_char);
		n = 0;
		lcnt = 0;
		while (cp < cp1 + dlen) {
			c = *cp++;
			do {
				if (c & 0200) {
					if (lcnt == 0) {
						fputs("\n\t\t\t", file);
						lcnt = 5;
					}
					fputs(dewks(n), file);
					putc(' ', file);
					lcnt--;
				}
				c <<= 1;
			} while (++n & 07);
		}
		putc(')', file);
		break;

	case T_KEY:
		putc('\t', file);
		keyflags = _getshort(cp);
		cp += 2;
		fprintf(file,"0x%04x", keyflags );      /* flags */
		fprintf(file," %u", *cp++);     /* protocol */
		fprintf(file," %u (", *cp++);   /* algorithm */

		n = b64_ntop(cp, (cp1 + dlen) - cp,
			     base64_key, sizeof base64_key);
		for (c = 0; c < n; ++c) {
			if (0 == (c & 0x3F))
				fprintf(file, "\n\t");
			putc(base64_key[c], file);  /* public key data */
		}

		fprintf(file, " )");
		if (n < 0)
			fprintf(file, "\t; BAD BASE64");
		fflush(file);
		cp = cp1 + dlen;
		break;

	case T_SIG:
		type = _getshort((u_char*)cp);
		cp += INT16SZ;
		fprintf(file, " %s", p_type(type));
		fprintf(file, "\t%d", *cp++);   /* algorithm */
		/* Check label value and print error if wrong. */
		n = *cp++;
		c = dn_count_labels (rrname);
		if (n != c)
			fprintf(file, "\t; LABELS WRONG (%d should be %d)\n\t",
				n, c);
		/* orig ttl */
		n = _getlong((u_char*)cp);
		if ((u_int32_t) n != tmpttl)
			fprintf(file, " %u", n);
		cp += INT32SZ;
		/* sig expire */
		fprintf(file, " (\n\t%s",
			__p_secstodate(_getlong((u_char*)cp)));
		cp += INT32SZ;
		/* time signed */
		fprintf(file, " %s", __p_secstodate(_getlong((u_char*)cp)));
		cp += INT32SZ;
		/* sig footprint */
		fprintf(file," %u ", _getshort((u_char*)cp));
		cp += INT16SZ;
		/* signer's name */
		cp = p_fqname(cp, msg, file);
		n = b64_ntop(cp, (cp1 + dlen) - cp,
			     base64_key, sizeof base64_key);
		for (c = 0; c < n; c++) {
			if (0 == (c & 0x3F))
		  		fprintf (file, "\n\t");
			putc(base64_key[c], file);              /* signature */
		}
		/* Clean up... */
		fprintf(file, " )");
		if (n < 0)
			fprintf(file, "\t; BAD BASE64");
		fflush(file);
		cp = cp1+dlen;
		break;

#ifdef ALLOW_T_UNSPEC
	case T_UNSPEC:
		{
			int NumBytes = 8;
			u_char *DataPtr;
			int i;

			if (dlen < NumBytes) NumBytes = dlen;
			fprintf(file, "\tFirst %d bytes of hex data:",
				NumBytes);
			for (i = 0, DataPtr = cp; i < NumBytes; i++, DataPtr++)
				fprintf(file, " %x", *DataPtr);
			cp += dlen;
		}
		break;
#endif /* ALLOW_T_UNSPEC */

	default:
		fprintf(file, "\t?%d?", type);
		cp += dlen;
	}
#if 0
	fprintf(file, "\t; dlen=%d, ttl %s\n", dlen, __p_time(tmpttl));
#else
	putc('\n', file);
#endif
	if (cp - cp1 != dlen) {
		fprintf(file,
			";; packet size error (found %lu, dlen was %d)\n",
			(unsigned long) (cp - cp1), dlen);
		cp = NULL;
	}
	return (cp);
}

/*
 * Names of RR classes and qclasses.  Classes and qclasses are the same, except
 * that C_ANY is a qclass but not a class.  (You can ask for records of class
 * C_ANY, but you can't have any records of that class in the database.)
 */
const struct res_sym __p_class_syms[] = {
	{C_IN,		"IN"},
	{C_CHAOS,	"CHAOS"},
	{C_HS,		"HS"},
	{C_HS,		"HESIOD"},
	{C_ANY,		"ANY"},
	{C_IN,		(char *)0}
};

/*
 * Names of RR types and qtypes.  Types and qtypes are the same, except
 * that T_ANY is a qtype but not a type.  (You can ask for records of type
 * T_ANY, but you can't have any records of that type in the database.)
 */
const struct res_sym __p_type_syms[] = {
	{T_A,		"A",		"address"},
	{T_NS,		"NS",		"name server"},
	{T_MD,		"MD",		"mail destination (deprecated)"},
	{T_MF,		"MF",		"mail forwarder (deprecated)"},
	{T_CNAME,	"CNAME",	"canonical name"},
	{T_SOA,		"SOA",		"start of authority"},
	{T_MB,		"MB",		"mailbox"},
	{T_MG,		"MG",		"mail group member"},
	{T_MR,		"MR",		"mail rename"},
	{T_NULL,	"NULL",		"null"},
	{T_WKS,		"WKS",		"well-known service (deprecated)"},
	{T_PTR,		"PTR",		"domain name pointer"},
	{T_HINFO,	"HINFO",	"host information"},
	{T_MINFO,	"MINFO",	"mailbox information"},
	{T_MX,		"MX",		"mail exchanger"},
	{T_TXT,		"TXT",		"text"},
	{T_RP,		"RP",		"responsible person"},
	{T_AFSDB,	"AFSDB",	"DCE or AFS server"},
	{T_X25,		"X25",		"X25 address"},
	{T_ISDN,	"ISDN",		"ISDN address"},
	{T_RT,		"RT",		"router"},
	{T_NSAP,	"NSAP",		"nsap address"},
	{T_NSAP_PTR,	"NSAP_PTR",	"domain name pointer"},
	{T_SIG,		"SIG",		"signature"},
	{T_KEY,		"KEY",		"key"},
	{T_PX,		"PX",		"mapping information"},
	{T_GPOS,	"GPOS",		"geographical position (withdrawn)"},
	{T_AAAA,	"AAAA",		"IPv6 address"},
	{T_LOC,		"LOC",		"location"},
	{T_NXT,		"NXT",		"next valid name (unimplemented)"},
	{T_EID,		"EID",		"endpoint identifier (unimplemented)"},
	{T_NIMLOC,	"NIMLOC",	"NIMROD locator (unimplemented)"},
	{T_SRV,		"SRV",		"server selection"},
	{T_ATMA,	"ATMA",		"ATM address (unimplemented)"},
	{T_IXFR,	"IXFR",		"incremental zone transfer"},
	{T_AXFR,	"AXFR",		"zone transfer"},
	{T_MAILB,	"MAILB",	"mailbox-related data (deprecated)"},
	{T_MAILA,	"MAILA",	"mail agent (deprecated)"},
	{T_UINFO,	"UINFO",	"user information (nonstandard)"},
	{T_UID,		"UID",		"user ID (nonstandard)"},
	{T_GID,		"GID",		"group ID (nonstandard)"},
	{T_NAPTR,	"NAPTR",	"URN Naming Authority"},
#ifdef ALLOW_T_UNSPEC
	{T_UNSPEC,	"UNSPEC",	"unspecified data (nonstandard)"},
#endif /* ALLOW_T_UNSPEC */
	{T_ANY,		"ANY",		"\"any\""},
	{0,		NULL,		NULL}
};

int
__sym_ston(syms, name, success)
	const struct res_sym *syms;
	char *name;
	int *success;
{
#ifdef _LIBC
	/* Changed to prevent warning. --drepper@gnu  */
	for (; syms->name != 0; syms++) {
#else
	for (NULL; syms->name != 0; syms++) {
#endif
		if (strcasecmp (name, syms->name) == 0) {
			if (success)
				*success = 1;
			return (syms->number);
		}
	}
	if (success)
		*success = 0;
	return (syms->number);          /* The default value. */
}

const char *
__sym_ntos(syms, number, success)
	const struct res_sym *syms;
	int number;
	int *success;
{
	static char unname[20];

#ifdef _LIBC
	/* Changed to prevent warning. --drepper@gnu  */
	for (; syms->name != 0; syms++) {
#else
	for (NULL; syms->name != 0; syms++) {
#endif
		if (number == syms->number) {
			if (success)
				*success = 1;
			return (syms->name);
		}
	}

	sprintf (unname, "%d", number);
	if (success)
		*success = 0;
	return (unname);
}


const char *
__sym_ntop(syms, number, success)
	const struct res_sym *syms;
	int number;
	int *success;
{
	static char unname[20];

#ifdef _LIBC
	/* Changed to prevent warning. --drepper@gnu  */
	for (; syms->name != 0; syms++) {
#else
	for (NULL; syms->name != 0; syms++) {
#endif
		if (number == syms->number) {
			if (success)
				*success = 1;
			return (syms->humanname);
		}
	}
	sprintf(unname, "%d", number);
	if (success)
		*success = 0;
	return (unname);
}

/*
 * Return a string for the type
 */
const char *
__p_type(type)
	int type;
{
	return (__sym_ntos (__p_type_syms, type, (int *)0));
}

/*
 * Return a mnemonic for class
 */
const char *
__p_class(class)
	int class;
{
	return (__sym_ntos (__p_class_syms, class, (int *)0));
}

/*
 * Return a mnemonic for an option
 */
const char *
__p_option(option)
	u_long option;
{
	static char nbuf[40];

	switch (option) {
	case RES_INIT:		return "init";
	case RES_DEBUG:		return "debug";
	case RES_AAONLY:	return "aaonly(unimpl)";
	case RES_USEVC:		return "usevc";
	case RES_PRIMARY:	return "primry(unimpl)";
	case RES_IGNTC:		return "igntc";
	case RES_RECURSE:	return "recurs";
	case RES_DEFNAMES:	return "defnam";
	case RES_STAYOPEN:	return "styopn";
	case RES_DNSRCH:	return "dnsrch";
	case RES_INSECURE1:	return "insecure1";
	case RES_INSECURE2:	return "insecure2";
	default:		sprintf(nbuf, "?0x%lx?", (u_long)option);
				return (nbuf);
	}
}

/*
 * Return a mnemonic for a time to live
 */
const char *
p_time(value)
	u_int32_t value;
{
	static char nbuf[60];
	int secs, mins, hours, days;
	register char *p;

	if (value == 0) {
		strcpy(nbuf, "0 secs");
		return (nbuf);
	}

	secs = value % 60;
	value /= 60;
	mins = value % 60;
	value /= 60;
	hours = value % 24;
	value /= 24;
	days = value;
	value = 0;

#define	PLURALIZE(x)	x, (x == 1) ? "" : "s"
	p = nbuf;
	if (days) {
		(void)sprintf(p, "%d day%s", PLURALIZE(days));
		while (*++p);
	}
	if (hours) {
		if (days)
			*p++ = ' ';
		(void)sprintf(p, "%d hour%s", PLURALIZE(hours));
		while (*++p);
	}
	if (mins) {
		if (days || hours)
			*p++ = ' ';
		(void)sprintf(p, "%d min%s", PLURALIZE(mins));
		while (*++p);
	}
	if (secs || ! (days || hours || mins)) {
		if (days || hours || mins)
			*p++ = ' ';
		(void)sprintf(p, "%d sec%s", PLURALIZE(secs));
	}
	return (nbuf);
}

/*
 * routines to convert between on-the-wire RR format and zone file format.
 * Does not contain conversion to/from decimal degrees; divide or multiply
 * by 60*60*1000 for that.
 */

static unsigned int poweroften[10] = {1, 10, 100, 1000, 10000, 100000,
				      1000000,10000000,100000000,1000000000};

/* takes an XeY precision/size value, returns a string representation. */
static const char *
precsize_ntoa(prec)
	u_int8_t prec;
{
	static char retbuf[sizeof "90000000.00"];
	unsigned long val;
	int mantissa, exponent;

	mantissa = (int)((prec >> 4) & 0x0f) % 10;
	exponent = (int)((prec >> 0) & 0x0f) % 10;

	val = mantissa * poweroften[exponent];

	(void) sprintf(retbuf, "%ld.%.2ld", val/100, val%100);
	return (retbuf);
}

/* converts ascii size/precision X * 10**Y(cm) to 0xXY.  moves pointer. */
static u_int8_t
precsize_aton(strptr)
	char **strptr;
{
	u_int8_t retval = 0;
	char *cp;
	int exponent = 0;
	int mantissa = 0;

	cp = *strptr;
	while (isdigit(*cp)) {
		if (mantissa == 0)
			mantissa = *cp - '0';
		else
			exponent++;
		cp++;
	}

	if (*cp == '.') {
		cp++;
		if (isdigit(*cp)) {
			if (mantissa == 0)
				mantissa = *cp - '0';
			else
				exponent++;
			cp++;

			if (isdigit(*cp)) {
				if (mantissa == 0)
					mantissa = *cp - '0';
				else
					exponent++;
				cp++;
			}
			else
				exponent++;
		}
	}
	else
		exponent += 2;

	if (mantissa == 0)
		exponent = 0;
	retval = (mantissa << 4) | exponent;
	*strptr = cp;
	return (retval);
}

/* converts ascii lat/lon to unsigned encoded 32-bit number.  moves pointer. */
static u_int32_t
latlon2ul(latlonstrptr,which)
	char **latlonstrptr;
	int *which;
{
	register char *cp;
	u_int32_t retval;
	int deg = 0, min = 0, secs = 0, secsfrac = 0;

	cp = *latlonstrptr;

	while (isdigit(*cp))
		deg = deg * 10 + (*cp++ - '0');

	while (isspace(*cp))
		cp++;

	if (!(isdigit(*cp)))
		goto fndhemi;

	while (isdigit(*cp))
		min = min * 10 + (*cp++ - '0');

	while (isspace(*cp))
		cp++;

	if (!(isdigit(*cp)))
		goto fndhemi;

	while (isdigit(*cp))
		secs = secs * 10 + (*cp++ - '0');

	if (*cp == '.') {		/* decimal seconds */
		cp++;
		if (isdigit(*cp)) {
			secsfrac = (*cp++ - '0') * 100;
			if (isdigit(*cp)) {
				secsfrac += (*cp++ - '0') * 10;
				if (isdigit(*cp)) {
					secsfrac += (*cp++ - '0');
				}
			}
		}
	}

	while (!isspace(*cp))	/* if any trailing garbage */
		cp++;

	while (isspace(*cp))
		cp++;

 fndhemi:
	switch (*cp) {
	case 'N': case 'n':
	case 'E': case 'e':
		retval = ((unsigned)1<<31)
			+ (((((deg * 60) + min) * 60) + secs) * 1000)
			+ secsfrac;
		break;
	case 'S': case 's':
	case 'W': case 'w':
		retval = ((unsigned)1<<31)
			- (((((deg * 60) + min) * 60) + secs) * 1000)
			- secsfrac;
		break;
	default:
		retval = 0;	/* invalid value -- indicates error */
		break;
	}

	switch (*cp) {
	case 'N': case 'n':
	case 'S': case 's':
		*which = 1;	/* latitude */
		break;
	case 'E': case 'e':
	case 'W': case 'w':
		*which = 2;	/* longitude */
		break;
	default:
		*which = 0;	/* error */
		break;
	}

	cp++;			/* skip the hemisphere */

	while (!isspace(*cp))	/* if any trailing garbage */
		cp++;

	while (isspace(*cp))	/* move to next field */
		cp++;

	*latlonstrptr = cp;

	return (retval);
}

/* converts a zone file representation in a string to an RDATA on-the-wire
 * representation. */
int
loc_aton(ascii, binary)
	const char *ascii;
	u_char *binary;
{
	const char *cp, *maxcp;
	u_char *bcp;

	u_int32_t latit = 0, longit = 0, alt = 0;
	u_int32_t lltemp1 = 0, lltemp2 = 0;
	int altmeters = 0, altfrac = 0, altsign = 1;
	u_int8_t hp = 0x16;	/* default = 1e6 cm = 10000.00m = 10km */
	u_int8_t vp = 0x13;	/* default = 1e3 cm = 10.00m */
	u_int8_t siz = 0x12;	/* default = 1e2 cm = 1.00m */
	int which1 = 0, which2 = 0;

	cp = ascii;
	maxcp = cp + strlen(ascii);

	lltemp1 = latlon2ul(&cp, &which1);

	lltemp2 = latlon2ul(&cp, &which2);

	switch (which1 + which2) {
	case 3:			/* 1 + 2, the only valid combination */
		if ((which1 == 1) && (which2 == 2)) { /* normal case */
			latit = lltemp1;
			longit = lltemp2;
		} else if ((which1 == 2) && (which2 == 1)) { /* reversed */
			longit = lltemp1;
			latit = lltemp2;
		} else {	/* some kind of brokenness */
			return (0);
		}
		break;
	default:		/* we didn't get one of each */
		return (0);
	}

	/* altitude */
	if (*cp == '-') {
		altsign = -1;
		cp++;
	}

	if (*cp == '+')
		cp++;

	while (isdigit(*cp))
		altmeters = altmeters * 10 + (*cp++ - '0');

	if (*cp == '.') {		/* decimal meters */
		cp++;
		if (isdigit(*cp)) {
			altfrac = (*cp++ - '0') * 10;
			if (isdigit(*cp)) {
				altfrac += (*cp++ - '0');
			}
		}
	}

	alt = (10000000 + (altsign * (altmeters * 100 + altfrac)));

	while (!isspace(*cp) && (cp < maxcp)) /* if trailing garbage or m */
		cp++;

	while (isspace(*cp) && (cp < maxcp))
		cp++;

	if (cp >= maxcp)
		goto defaults;

	siz = precsize_aton(&cp);

	while (!isspace(*cp) && (cp < maxcp))	/* if trailing garbage or m */
		cp++;

	while (isspace(*cp) && (cp < maxcp))
		cp++;

	if (cp >= maxcp)
		goto defaults;

	hp = precsize_aton(&cp);

	while (!isspace(*cp) && (cp < maxcp))	/* if trailing garbage or m */
		cp++;

	while (isspace(*cp) && (cp < maxcp))
		cp++;

	if (cp >= maxcp)
		goto defaults;

	vp = precsize_aton(&cp);

 defaults:

	bcp = binary;
	*bcp++ = (u_int8_t) 0;	/* version byte */
	*bcp++ = siz;
	*bcp++ = hp;
	*bcp++ = vp;
	PUTLONG(latit,bcp);
	PUTLONG(longit,bcp);
	PUTLONG(alt,bcp);

	return (16);		/* size of RR in octets */
}

/* takes an on-the-wire LOC RR and formats it in a human readable format. */
const char *
loc_ntoa(binary, ascii)
	const u_char *binary;
	char *ascii;
{
	static char *error = "?";
	register const u_char *cp = binary;

	int latdeg, latmin, latsec, latsecfrac;
	int longdeg, longmin, longsec, longsecfrac;
	char northsouth, eastwest;
	int altmeters, altfrac, altsign;

	const int referencealt = 100000 * 100;

	int32_t latval, longval, altval;
	u_int32_t templ;
	u_int8_t sizeval, hpval, vpval, versionval;

	char *sizestr, *hpstr, *vpstr;

	versionval = *cp++;

	if (versionval) {
		sprintf(ascii, "; error: unknown LOC RR version");
		return (ascii);
	}

	sizeval = *cp++;

	hpval = *cp++;
	vpval = *cp++;

	GETLONG(templ, cp);
	latval = (templ - ((unsigned)1<<31));

	GETLONG(templ, cp);
	longval = (templ - ((unsigned)1<<31));

	GETLONG(templ, cp);
	if (templ < (u_int32_t) referencealt) { /* below WGS 84 spheroid */
		altval = referencealt - templ;
		altsign = -1;
	} else {
		altval = templ - referencealt;
		altsign = 1;
	}

	if (latval < 0) {
		northsouth = 'S';
		latval = -latval;
	} else
		northsouth = 'N';

	latsecfrac = latval % 1000;
	latval = latval / 1000;
	latsec = latval % 60;
	latval = latval / 60;
	latmin = latval % 60;
	latval = latval / 60;
	latdeg = latval;

	if (longval < 0) {
		eastwest = 'W';
		longval = -longval;
	} else
		eastwest = 'E';

	longsecfrac = longval % 1000;
	longval = longval / 1000;
	longsec = longval % 60;
	longval = longval / 60;
	longmin = longval % 60;
	longval = longval / 60;
	longdeg = longval;

	altfrac = altval % 100;
	altmeters = (altval / 100) * altsign;

	if ((sizestr = strdup(precsize_ntoa(sizeval))) == NULL)
		sizestr = error;
	if ((hpstr = strdup(precsize_ntoa(hpval))) == NULL)
		hpstr = error;
	if ((vpstr = strdup(precsize_ntoa(vpval))) == NULL)
		vpstr = error;

	sprintf(ascii,
	      "%d %.2d %.2d.%.3d %c %d %.2d %.2d.%.3d %c %d.%.2dm %sm %sm %sm",
		latdeg, latmin, latsec, latsecfrac, northsouth,
		longdeg, longmin, longsec, longsecfrac, eastwest,
		altmeters, altfrac, sizestr, hpstr, vpstr);

	if (sizestr != error)
		free(sizestr);
	if (hpstr != error)
		free(hpstr);
	if (vpstr != error)
		free(vpstr);

	return (ascii);
}


/* Return the number of DNS hierarchy levels in the name. */
int
__dn_count_labels(name)
	char *name;
{
	int i, len, count;

	len = strlen(name);

	for(i = 0, count = 0; i < len; i++) {
		if (name[i] == '.')
			count++;
	}

	/* don't count initial wildcard */
	if (name[0] == '*')
		if (count)
			count--;

	/* don't count the null label for root. */
	/* if terminating '.' not found, must adjust */
	/* count to include last label */
	if (len > 0 && name[len-1] != '.')
		count++;
	return (count);
}


/*
 * Make dates expressed in seconds-since-Jan-1-1970 easy to read.
 * SIG records are required to be printed like this, by the Secure DNS RFC.
 */
char *
__p_secstodate (secs)
	unsigned long secs;
{
	static char output[15];         /* YYYYMMDDHHMMSS and null */
	time_t clock = secs;
	struct tm time;

	__gmtime_r(&clock, &time);
	time.tm_year += 1900;
	time.tm_mon += 1;
	sprintf(output, "%04d%02d%02d%02d%02d%02d",
		time.tm_year, time.tm_mon, time.tm_mday,
		time.tm_hour, time.tm_min, time.tm_sec);
	return (output);
}