resolv/res_debug.c

   1 /*
   2  * ++Copyright++ 1985, 1990, 1993
   3  * -
   4  * Copyright (c) 1985, 1990, 1993
   5  *    The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by the University of
  18  *      California, Berkeley and its contributors.
  19  * 4. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  * -
  35  * Portions Copyright (c) 1993 by Digital Equipment Corporation.
  36  *
  37  * Permission to use, copy, modify, and distribute this software for any
  38  * purpose with or without fee is hereby granted, provided that the above
  39  * copyright notice and this permission notice appear in all copies, and that
  40  * the name of Digital Equipment Corporation not be used in advertising or
  41  * publicity pertaining to distribution of the document or software without
  42  * specific, written prior permission.
  43  *
  44  * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
  45  * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
  46  * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
  47  * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
  48  * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
  49  * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
  50  * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
  51  * SOFTWARE.
  52  * -
  53  * Portions Copyright (c) 1995 by International Business Machines, Inc.
  54  *
  55  * International Business Machines, Inc. (hereinafter called IBM) grants
  56  * permission under its copyrights to use, copy, modify, and distribute this
  57  * Software with or without fee, provided that the above copyright notice and
  58  * all paragraphs of this notice appear in all copies, and that the name of IBM
  59  * not be used in connection with the marketing of any product incorporating
  60  * the Software or modifications thereof, without specific, written prior
  61  * permission.
  62  *
  63  * To the extent it has a right to do so, IBM grants an immunity from suit
  64  * under its patents, if any, for the use, sale or manufacture of products to
  65  * the extent that such products are used for performing Domain Name System
  66  * dynamic updates in TCP/IP networks by means of the Software.  No immunity is
  67  * granted for any product per se or for any other function of any product.
  68  *
  69  * THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES,
  70  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  71  * PARTICULAR PURPOSE.  IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL,
  72  * DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING
  73  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN
  74  * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES.
  75  * --Copyright--
  76  */
  77
  78 #if defined(LIBC_SCCS) && !defined(lint)
  79 static char sccsid[] = "@(#)res_debug.c 8.1 (Berkeley) 6/4/93";
  80 static char rcsid[] = "$Id$";
  81 #endif /* LIBC_SCCS and not lint */
  82
  83 #include <sys/param.h>
  84 #include <sys/types.h>
  85 #include <sys/socket.h>
  86 #include <netinet/in.h>
  87 #include <arpa/inet.h>
  88 #include <arpa/nameser.h>
  89
  90 #include <ctype.h>
  91 #include <netdb.h>
  92 #include <resolv.h>
  93 #include <stdio.h>
  94 #include <time.h>
  95
  96 #if defined(BSD) && (BSD >= 199103) && defined(AF_INET6)
  97 # include <stdlib.h>
  98 # include <string.h>
  99 #else
 100 # include "../conf/portability.h"
 101 #endif
 102
 103 #if defined(USE_OPTIONS_H)
 104 # include "../conf/options.h"
 105 #endif
 106
 107 extern const char *_res_opcodes[];
 108 extern const char *_res_resultcodes[];
 109
 110 /* XXX: we should use getservbyport() instead. */
 111 static const char *
 112 dewks(wks)
 113         int wks;
 114 {
 115         static char nbuf[20];
 116
 117         switch (wks) {
 118         case 5: return "rje";
 119         case 7: return "echo";
 120         case 9: return "discard";
 121         case 11: return "systat";
 122         case 13: return "daytime";
 123         case 15: return "netstat";
 124         case 17: return "qotd";
 125         case 19: return "chargen";
 126         case 20: return "ftp-data";
 127         case 21: return "ftp";
 128         case 23: return "telnet";
 129         case 25: return "smtp";
 130         case 37: return "time";
 131         case 39: return "rlp";
 132         case 42: return "name";
 133         case 43: return "whois";
 134         case 53: return "domain";
 135         case 57: return "apts";
 136         case 59: return "apfs";
 137         case 67: return "bootps";
 138         case 68: return "bootpc";
 139         case 69: return "tftp";
 140         case 77: return "rje";
 141         case 79: return "finger";
 142         case 87: return "link";
 143         case 95: return "supdup";
 144         case 100: return "newacct";
 145         case 101: return "hostnames";
 146         case 102: return "iso-tsap";
 147         case 103: return "x400";
 148         case 104: return "x400-snd";
 149         case 105: return "csnet-ns";
 150         case 109: return "pop-2";
 151         case 111: return "sunrpc";
 152         case 113: return "auth";
 153         case 115: return "sftp";
 154         case 117: return "uucp-path";
 155         case 119: return "nntp";
 156         case 121: return "erpc";
 157         case 123: return "ntp";
 158         case 133: return "statsrv";
 159         case 136: return "profile";
 160         case 144: return "NeWS";
 161         case 161: return "snmp";
 162         case 162: return "snmp-trap";
 163         case 170: return "print-srv";
 164         default: (void) sprintf(nbuf, "%d", wks); return (nbuf);
 165         }
 166 }
 167
 168 /* XXX: we should use getprotobynumber() instead. */
 169 static const char *
 170 deproto(protonum)
 171         int protonum;
 172 {
 173         static char nbuf[20];
 174
 175         switch (protonum) {
 176         case 1: return "icmp";
 177         case 2: return "igmp";
 178         case 3: return "ggp";
 179         case 5: return "st";
 180         case 6: return "tcp";
 181         case 7: return "ucl";
 182         case 8: return "egp";
 183         case 9: return "igp";
 184         case 11: return "nvp-II";
 185         case 12: return "pup";
 186         case 16: return "chaos";
 187         case 17: return "udp";
 188         default: (void) sprintf(nbuf, "%d", protonum); return (nbuf);
 189         }
 190 }
 191
 192 static const u_char *
 193 do_rrset(msg, len, cp, cnt, pflag, file, hs)
 194         int cnt, pflag, len;
 195         const u_char *cp, *msg;
 196         const char *hs;
 197         FILE *file;
 198 {
 199         int n;
 200         int sflag;
 201
 202         /*
 203          * Print answer records.
 204          */
 205         sflag = (_res.pfcode & pflag);
 206         if (n = ntohs(cnt)) {
 207                 if ((!_res.pfcode) ||
 208                     ((sflag) && (_res.pfcode & RES_PRF_HEAD1)))
 209                         fprintf(file, hs);
 210                 while (--n >= 0) {
 211                         if ((!_res.pfcode) || sflag) {
 212                                 cp = p_rr(cp, msg, file);
 213                         } else {
 214                                 unsigned int dlen;
 215                                 cp += __dn_skipname(cp, cp + MAXCDNAME);
 216                                 cp += INT16SZ;
 217                                 cp += INT16SZ;
 218                                 cp += INT32SZ;
 219                                 dlen = _getshort((u_char*)cp);
 220                                 cp += INT16SZ;
 221                                 cp += dlen;
 222                         }
 223                         if ((cp - msg) > len)
 224                                 return (NULL);
 225                 }
 226                 if ((!_res.pfcode) ||
 227                     ((sflag) && (_res.pfcode & RES_PRF_HEAD1)))
 228                         putc('\n', file);
 229         }
 230         return (cp);
 231 }
 232
 233 void
 234 __p_query(msg)
 235         const u_char *msg;
 236 {
 237         __fp_query(msg, stdout);
 238 }
 239
 240 #ifdef ultrix
 241 /* ultrix 4.0's packaging has some icky packaging.  alias for it here.
 242  * there is more junk of this kind over in res_comp.c.
 243  */
 244 void
 245 p_query(msg)
 246         const u_char *msg;
 247 {
 248         __p_query(msg);
 249 }
 250 #endif
 251
 252 /*
 253  * Print the current options.
 254  * This is intended to be primarily a debugging routine.
 255  */
 256 void
 257 __fp_resstat(statp, file)
 258         struct __res_state *statp;
 259         FILE *file;
 260 {
 261         register u_long mask;
 262
 263         fprintf(file, ";; res options:");
 264         if (!statp)
 265                 statp = &_res;
 266         for (mask = 1;  mask != 0;  mask <<= 1)
 267                 if (statp->options & mask)
 268                         fprintf(file, " %s", p_option(mask));
 269         putc('\n', file);
 270 }
 271
 272 /*
 273  * Print the contents of a query.
 274  * This is intended to be primarily a debugging routine.
 275  */
 276 void
 277 __fp_nquery(msg, len, file)
 278         const u_char *msg;
 279         int len;
 280         FILE *file;
 281 {
 282         register const u_char *cp, *endMark;
 283         register const HEADER *hp;
 284         register int n;
 285
 286         if ((_res.options & RES_INIT) == 0 && res_init() == -1)
 287                 return;
 288
 289 #define TruncTest(x) if (x >= endMark) goto trunc
 290 #define ErrorTest(x) if (x == NULL) goto error
 291
 292         /*
 293          * Print header fields.
 294          */
 295         hp = (HEADER *)msg;
 296         cp = msg + HFIXEDSZ;
 297         endMark = cp + len;
 298         if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEADX) || hp->rcode) {
 299                 fprintf(file, ";; ->>HEADER<<- opcode: %s, status: %s, id: %d",
 300                         _res_opcodes[hp->opcode],
 301                         _res_resultcodes[hp->rcode],
 302                         ntohs(hp->id));
 303                 putc('\n', file);
 304         }
 305         if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEADX))
 306                 putc(';', file);
 307         if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEAD2)) {
 308                 fprintf(file, "; flags:");
 309                 if (hp->qr)
 310                         fprintf(file, " qr");
 311                 if (hp->aa)
 312                         fprintf(file, " aa");
 313                 if (hp->tc)
 314                         fprintf(file, " tc");
 315                 if (hp->rd)
 316                         fprintf(file, " rd");
 317                 if (hp->ra)
 318                         fprintf(file, " ra");
 319                 if (hp->unused)
 320                         fprintf(file, " UNUSED-BIT-ON");
 321                 if (hp->ad)
 322                         fprintf(file, " ad");
 323                 if (hp->cd)
 324                         fprintf(file, " cd");
 325         }
 326         if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEAD1)) {
 327                 fprintf(file, "; Ques: %d", ntohs(hp->qdcount));
 328                 fprintf(file, ", Ans: %d", ntohs(hp->ancount));
 329                 fprintf(file, ", Auth: %d", ntohs(hp->nscount));
 330                 fprintf(file, ", Addit: %d", ntohs(hp->arcount));
 331         }
 332         if ((!_res.pfcode) || (_res.pfcode &
 333                 (RES_PRF_HEADX | RES_PRF_HEAD2 | RES_PRF_HEAD1))) {
 334                 putc('\n',file);
 335         }
 336         /*
 337          * Print question records.
 338          */
 339         if (n = ntohs(hp->qdcount)) {
 340                 if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
 341                         fprintf(file, ";; QUESTIONS:\n");
 342                 while (--n >= 0) {
 343                         if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
 344                                 fprintf(file, ";;\t");
 345                         TruncTest(cp);
 346                         if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
 347                                 cp = p_cdnname(cp, msg, len, file);
 348                         else {
 349                                 int n;
 350                                 char name[MAXDNAME];
 351
 352                                 if ((n = dn_expand(msg, msg+len, cp, name,
 353                                                 sizeof name)) < 0)
 354                                         cp = NULL;
 355                                 else
 356                                         cp += n;
 357                         }
 358                         ErrorTest(cp);
 359                         TruncTest(cp);
 360                         if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
 361                                 fprintf(file, ", type = %s",
 362                                         __p_type(_getshort((u_char*)cp)));
 363                         cp += INT16SZ;
 364                         TruncTest(cp);
 365                         if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
 366                                 fprintf(file, ", class = %s\n",
 367                                         __p_class(_getshort((u_char*)cp)));
 368                         cp += INT16SZ;
 369                         if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
 370                                 putc('\n', file);
 371                 }
 372         }
 373         /*
 374          * Print authoritative answer records
 375          */
 376         TruncTest(cp);
 377         cp = do_rrset(msg, len, cp, hp->ancount, RES_PRF_ANS, file,
 378                       ";; ANSWERS:\n");
 379         ErrorTest(cp);
 380
 381         /*
 382          * print name server records
 383          */
 384         TruncTest(cp);
 385         cp = do_rrset(msg, len, cp, hp->nscount, RES_PRF_AUTH, file,
 386                       ";; AUTHORITY RECORDS:\n");
 387         ErrorTest(cp);
 388
 389         TruncTest(cp);
 390         /*
 391          * print additional records
 392          */
 393         cp = do_rrset(msg, len, cp, hp->arcount, RES_PRF_ADD, file,
 394                       ";; ADDITIONAL RECORDS:\n");
 395         ErrorTest(cp);
 396         return;
 397  trunc:
 398         fprintf(file, "\n;; ...truncated\n");
 399         return;
 400  error:
 401         fprintf(file, "\n;; ...malformed\n");
 402 }
 403
 404 void
 405 __fp_query(msg, file)
 406         const u_char *msg;
 407         FILE *file;
 408 {
 409         fp_nquery(msg, PACKETSZ, file);
 410 }
 411
 412 const u_char *
 413 __p_cdnname(cp, msg, len, file)
 414         const u_char *cp, *msg;
 415         int len;
 416         FILE *file;
 417 {
 418         char name[MAXDNAME];
 419         int n;
 420
 421         if ((n = dn_expand(msg, msg + len, cp, name, sizeof name)) < 0)
 422                 return (NULL);
 423         if (name[0] == '\0')
 424                 putc('.', file);
 425         else
 426                 fputs(name, file);
 427         return (cp + n);
 428 }
 429
 430 const u_char *
 431 __p_cdname(cp, msg, file)
 432         const u_char *cp, *msg;
 433         FILE *file;
 434 {
 435         return (p_cdnname(cp, msg, PACKETSZ, file));
 436 }
 437
 438
 439 /* Return a fully-qualified domain name from a compressed name (with
 440    length supplied).  */
 441
 442 const u_char *
 443 __p_fqnname(cp, msg, msglen, name, namelen)
 444         const u_char *cp, *msg;
 445         int msglen;
 446         char *name;
 447         int namelen;
 448 {
 449         int n, newlen;
 450
 451         if ((n = dn_expand(msg, cp + msglen, cp, name, namelen)) < 0)
 452                 return (NULL);
 453         newlen = strlen (name);
 454         if (newlen == 0 || name[newlen - 1] != '.')
 455                 if (newlen+1 >= namelen)        /* Lack space for final dot */
 456                         return (NULL);
 457                 else
 458                         strcpy(name + newlen, ".");
 459         return (cp + n);
 460 }
 461
 462 /* XXX: the rest of these functions need to become length-limited, too. (vix)
 463  */
 464
 465 const u_char *
 466 __p_fqname(cp, msg, file)
 467         const u_char *cp, *msg;
 468         FILE *file;
 469 {
 470         char name[MAXDNAME];
 471         const u_char *n;
 472
 473         n = __p_fqnname(cp, msg, MAXCDNAME, name, sizeof name);
 474         if (n == NULL)
 475                 return (NULL);
 476         fputs(name, file);
 477         return (n);
 478 }
 479
 480 /*
 481  * Print resource record fields in human readable form.
 482  */
 483 const u_char *
 484 __p_rr(cp, msg, file)
 485         const u_char *cp, *msg;
 486         FILE *file;
 487 {
 488         int type, class, dlen, n, c;
 489         struct in_addr inaddr;
 490         const u_char *cp1, *cp2;
 491         u_int32_t tmpttl, t;
 492         int lcnt;
 493         u_int16_t keyflags;
 494         char rrname[MAXDNAME];          /* The fqdn of this RR */
 495         char base64_key[MAX_KEY_BASE64];
 496
 497         if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
 498                 h_errno = NETDB_INTERNAL;
 499                 return (NULL);
 500         }
 501         cp = __p_fqnname(cp, msg, MAXCDNAME, rrname, sizeof rrname);
 502         if (!cp)
 503                 return (NULL);                  /* compression error */
 504         fputs(rrname, file);
 505
 506         type = _getshort((u_char*)cp);
 507         cp += INT16SZ;
 508         class = _getshort((u_char*)cp);
 509         cp += INT16SZ;
 510         tmpttl = _getlong((u_char*)cp);
 511         cp += INT32SZ;
 512         dlen = _getshort((u_char*)cp);
 513         cp += INT16SZ;
 514         cp1 = cp;
 515         if ((!_res.pfcode) || (_res.pfcode & RES_PRF_TTLID))
 516                 fprintf(file, "\t%lu", (u_long)tmpttl);
 517         if ((!_res.pfcode) || (_res.pfcode & RES_PRF_CLASS))
 518                 fprintf(file, "\t%s", __p_class(class));
 519         fprintf(file, "\t%s", __p_type(type));
 520         /*
 521          * Print type specific data, if appropriate
 522          */
 523         switch (type) {
 524         case T_A:
 525                 switch (class) {
 526                 case C_IN:
 527                 case C_HS:
 528                         bcopy(cp, (char *)&inaddr, INADDRSZ);
 529                         if (dlen == 4) {
 530                                 fprintf(file, "\t%s", inet_ntoa(inaddr));
 531                                 cp += dlen;
 532                         } else if (dlen == 7) {
 533                                 char *address;
 534                                 u_char protocol;
 535                                 u_short port;
 536
 537                                 address = inet_ntoa(inaddr);
 538                                 cp += INADDRSZ;
 539                                 protocol = *(u_char*)cp;
 540                                 cp += sizeof (u_char);
 541                                 port = _getshort((u_char*)cp);
 542                                 cp += INT16SZ;
 543                                 fprintf(file, "\t%s\t; proto %d, port %d",
 544                                         address, protocol, port);
 545                         }
 546                         break;
 547                 default:
 548                         cp += dlen;
 549                 }
 550                 break;
 551         case T_CNAME:
 552         case T_MB:
 553         case T_MG:
 554         case T_MR:
 555         case T_NS:
 556         case T_PTR:
 557                 putc('\t', file);
 558                 if ((cp = p_fqname(cp, msg, file)) == NULL)
 559                         return (NULL);
 560                 break;
 561
 562         case T_HINFO:
 563         case T_ISDN:
 564                 cp2 = cp + dlen;
 565                 (void) fputs("\t\"", file);
 566                 if ((n = (unsigned char) *cp++) != 0) {
 567                         for (c = n; c > 0 && cp < cp2; c--) {
 568                                 if (strchr("\n\"\\", *cp))
 569                                         (void) putc('\\', file);
 570                                 (void) putc(*cp++, file);
 571                         }
 572                 }
 573                 putc('"', file);
 574                 if (cp < cp2 && (n = (unsigned char) *cp++) != 0) {
 575                         (void) fputs ("\t\"", file);
 576                         for (c = n; c > 0 && cp < cp2; c--) {
 577                                 if (strchr("\n\"\\", *cp))
 578                                         (void) putc('\\', file);
 579                                 (void) putc(*cp++, file);
 580                         }
 581                         putc('"', file);
 582                 } else if (type == T_HINFO) {
 583                         (void) fputs("\"?\"", file);
 584                         fprintf(file, "\n;; *** Warning *** OS-type missing");
 585                 }
 586                 break;
 587
 588         case T_SOA:
 589                 putc('\t', file);
 590                 if ((cp = p_fqname(cp, msg, file)) == NULL)
 591                         return (NULL);
 592                 putc(' ', file);
 593                 if ((cp = p_fqname(cp, msg, file)) == NULL)
 594                         return (NULL);
 595                 fputs(" (\n", file);
 596                 t = _getlong((u_char*)cp);  cp += INT32SZ;
 597                 fprintf(file, "\t\t\t%lu\t; serial\n", (u_long)t);
 598                 t = _getlong((u_char*)cp);  cp += INT32SZ;
 599                 fprintf(file, "\t\t\t%lu\t; refresh (%s)\n",
 600                         (u_long)t, __p_time(t));
 601                 t = _getlong((u_char*)cp);  cp += INT32SZ;
 602                 fprintf(file, "\t\t\t%lu\t; retry (%s)\n",
 603                         (u_long)t, __p_time(t));
 604                 t = _getlong((u_char*)cp);  cp += INT32SZ;
 605                 fprintf(file, "\t\t\t%lu\t; expire (%s)\n",
 606                         (u_long)t, __p_time(t));
 607                 t = _getlong((u_char*)cp);  cp += INT32SZ;
 608                 fprintf(file, "\t\t\t%lu )\t; minimum (%s)",
 609                         (u_long)t, __p_time(t));
 610                 break;
 611
 612         case T_MX:
 613         case T_AFSDB:
 614         case T_RT:
 615                 fprintf(file, "\t%d ", _getshort((u_char*)cp));
 616                 cp += INT16SZ;
 617                 if ((cp = p_fqname(cp, msg, file)) == NULL)
 618                         return (NULL);
 619                 break;
 620
 621         case T_PX:
 622                 fprintf(file, "\t%d ", _getshort((u_char*)cp));
 623                 cp += INT16SZ;
 624                 if ((cp = p_fqname(cp, msg, file)) == NULL)
 625                         return (NULL);
 626                 putc(' ', file);
 627                 if ((cp = p_fqname(cp, msg, file)) == NULL)
 628                         return (NULL);
 629                 break;
 630
 631         case T_X25:
 632                 cp2 = cp + dlen;
 633                 (void) fputs("\t\"", file);
 634                 if ((n = (unsigned char) *cp++) != 0) {
 635                         for (c = n; c > 0 && cp < cp2; c--) {
 636                                 if (strchr("\n\"\\", *cp))
 637                                         (void) putc('\\', file);
 638                                 (void) putc(*cp++, file);
 639                         }
 640                 }
 641                 putc('"', file);
 642                 break;
 643
 644         case T_TXT:
 645                 (void) putc('\t', file);
 646                 cp2 = cp1 + dlen;
 647                 while (cp < cp2) {
 648                         putc('"', file);
 649                         if (n = (unsigned char) *cp++) {
 650                                 for (c = n; c > 0 && cp < cp2; c--) {
 651                                         if (strchr("\n\"\\", *cp))
 652                                                 (void) putc('\\', file);
 653                                         (void) putc(*cp++, file);
 654                                 }
 655                         }
 656                         putc('"', file);
 657                         if (cp < cp2)
 658                                 putc(' ', file);
 659                 }
 660                 break;
 661
 662         case T_NSAP:
 663                 (void) fprintf(file, "\t%s", inet_nsap_ntoa(dlen, cp, NULL));
 664                 cp += dlen;
 665                 break;
 666
 667         case T_AAAA: {
 668                 char t[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255"];
 669
 670                 fprintf(file, "\t%s", inet_ntop(AF_INET6, cp, t, sizeof t));
 671                 cp += dlen;
 672                 break;
 673         }
 674
 675         case T_LOC: {
 676                 char t[255];
 677
 678                 (void) fprintf(file, "\t%s", loc_ntoa(cp, t));
 679                 cp += dlen;
 680                 break;
 681         }
 682
 683         case T_SRV: {
 684                 u_int priority, weight, port;
 685
 686                 priority = _getshort(cp);  cp += INT16SZ;
 687                 weight   = _getshort(cp);  cp += INT16SZ;
 688                 port     = _getshort(cp);  cp += INT16SZ;
 689                 fprintf(file, "\t%u %u %u ", priority, weight, port);
 690                 if ((cp = p_fqname(cp, msg, file)) == NULL)
 691                         return (NULL);
 692                 break;
 693         }
 694
 695         case T_MINFO:
 696         case T_RP:
 697                 putc('\t', file);
 698                 if ((cp = p_fqname(cp, msg, file)) == NULL)
 699                         return (NULL);
 700                 putc(' ', file);
 701                 if ((cp = p_fqname(cp, msg, file)) == NULL)
 702                         return (NULL);
 703                 break;
 704
 705         case T_UINFO:
 706                 putc('\t', file);
 707                 fputs((char *)cp, file);
 708                 cp += dlen;
 709                 break;
 710
 711         case T_UID:
 712         case T_GID:
 713                 if (dlen == 4) {
 714                         fprintf(file, "\t%u", _getlong((u_char*)cp));
 715                         cp += INT32SZ;
 716                 }
 717                 break;
 718
 719         case T_WKS:
 720                 if (dlen < INT32SZ + 1)
 721                         break;
 722                 bcopy(cp, (char *)&inaddr, INADDRSZ);
 723                 cp += INT32SZ;
 724                 fprintf(file, "\t%s %s ( ",
 725                         inet_ntoa(inaddr),
 726                         deproto((int) *cp));
 727                 cp += sizeof (u_char);
 728                 n = 0;
 729                 lcnt = 0;
 730                 while (cp < cp1 + dlen) {
 731                         c = *cp++;
 732                         do {
 733                                 if (c & 0200) {
 734                                         if (lcnt == 0) {
 735                                                 fputs("\n\t\t\t", file);
 736                                                 lcnt = 5;
 737                                         }
 738                                         fputs(dewks(n), file);
 739                                         putc(' ', file);
 740                                         lcnt--;
 741                                 }
 742                                 c <<= 1;
 743                         } while (++n & 07);
 744                 }
 745                 putc(')', file);
 746                 break;
 747
 748         case T_KEY:
 749                 putc('\t', file);
 750                 keyflags = _getshort(cp);
 751                 cp += 2;
 752                 fprintf(file,"0x%04x", keyflags );      /* flags */
 753                 fprintf(file," %u", *cp++);     /* protocol */
 754                 fprintf(file," %u (", *cp++);   /* algorithm */
 755
 756                 n = b64_ntop(cp, (cp1 + dlen) - cp,
 757                              base64_key, sizeof base64_key);
 758                 for (c = 0; c < n; ++c) {
 759                         if (0 == (c & 0x3F))
 760                                 fprintf(file, "\n\t");
 761                         putc(base64_key[c], file);  /* public key data */
 762                 }
 763
 764                 fprintf(file, " )");
 765                 if (n < 0)
 766                         fprintf(file, "\t; BAD BASE64");
 767                 fflush(file);
 768                 cp = cp1 + dlen;
 769                 break;
 770
 771         case T_SIG:
 772                 type = _getshort((u_char*)cp);
 773                 cp += INT16SZ;
 774                 fprintf(file, " %s", p_type(type));
 775                 fprintf(file, "\t%d", *cp++);   /* algorithm */
 776                 /* Check label value and print error if wrong. */
 777                 n = *cp++;
 778                 c = dn_count_labels (rrname);
 779                 if (n != c)
 780                         fprintf(file, "\t; LABELS WRONG (%d should be %d)\n\t",
 781                                 n, c);
 782                 /* orig ttl */
 783                 n = _getlong((u_char*)cp);
 784                 if (n != tmpttl)
 785                         fprintf(file, " %u", n);
 786                 cp += INT32SZ;
 787                 /* sig expire */
 788                 fprintf(file, " (\n\t%s",
 789                         __p_secstodate(_getlong((u_char*)cp)));
 790                 cp += INT32SZ;
 791                 /* time signed */
 792                 fprintf(file, " %s", __p_secstodate(_getlong((u_char*)cp)));
 793                 cp += INT32SZ;
 794                 /* sig footprint */
 795                 fprintf(file," %u ", _getshort((u_char*)cp));
 796                 cp += INT16SZ;
 797                 /* signer's name */
 798                 cp = p_fqname(cp, msg, file);
 799                 n = b64_ntop(cp, (cp1 + dlen) - cp,
 800                              base64_key, sizeof base64_key);
 801                 for (c = 0; c < n; c++) {
 802                         if (0 == (c & 0x3F))
 803                                 fprintf (file, "\n\t");
 804                         putc(base64_key[c], file);              /* signature */
 805                 }
 806                 /* Clean up... */
 807                 fprintf(file, " )");
 808                 if (n < 0)
 809                         fprintf(file, "\t; BAD BASE64");
 810                 fflush(file);
 811                 cp = cp1+dlen;
 812                 break;
 813
 814 #ifdef ALLOW_T_UNSPEC
 815         case T_UNSPEC:
 816                 {
 817                         int NumBytes = 8;
 818                         u_char *DataPtr;
 819                         int i;
 820
 821                         if (dlen < NumBytes) NumBytes = dlen;
 822                         fprintf(file, "\tFirst %d bytes of hex data:",
 823                                 NumBytes);
 824                         for (i = 0, DataPtr = cp; i < NumBytes; i++, DataPtr++)
 825                                 fprintf(file, " %x", *DataPtr);
 826                         cp += dlen;
 827                 }
 828                 break;
 829 #endif /* ALLOW_T_UNSPEC */
 830
 831         default:
 832                 fprintf(file, "\t?%d?", type);
 833                 cp += dlen;
 834         }
 835 #if 0
 836         fprintf(file, "\t; dlen=%d, ttl %s\n", dlen, __p_time(tmpttl));
 837 #else
 838         putc('\n', file);
 839 #endif
 840         if (cp - cp1 != dlen) {
 841                 fprintf(file,
 842                         ";; packet size error (found %lu, dlen was %d)\n",
 843                         (unsigned long) (cp - cp1), dlen);
 844                 cp = NULL;
 845         }
 846         return (cp);
 847 }
 848
 849 /*
 850  * Names of RR classes and qclasses.  Classes and qclasses are the same, except
 851  * that C_ANY is a qclass but not a class.  (You can ask for records of class
 852  * C_ANY, but you can't have any records of that class in the database.)
 853  */
 854 const struct res_sym __p_class_syms[] = {
 855         {C_IN,          "IN"},
 856         {C_CHAOS,       "CHAOS"},
 857         {C_HS,          "HS"},
 858         {C_HS,          "HESIOD"},
 859         {C_ANY,         "ANY"},
 860         {C_IN,          (char *)0}
 861 };
 862
 863 /*
 864  * Names of RR types and qtypes.  Types and qtypes are the same, except
 865  * that T_ANY is a qtype but not a type.  (You can ask for records of type
 866  * T_ANY, but you can't have any records of that type in the database.)
 867  */
 868 const struct res_sym __p_type_syms[] = {
 869         {T_A,           "A",            "address"},
 870         {T_NS,          "NS",           "name server"},
 871         {T_MD,          "MD",           "mail destination (deprecated)"},
 872         {T_MF,          "MF",           "mail forwarder (deprecated)"},
 873         {T_CNAME,       "CNAME",        "canonical name"},
 874         {T_SOA,         "SOA",          "start of authority"},
 875         {T_MB,          "MB",           "mailbox"},
 876         {T_MG,          "MG",           "mail group member"},
 877         {T_MR,          "MR",           "mail rename"},
 878         {T_NULL,        "NULL",         "null"},
 879         {T_WKS,         "WKS",          "well-known service (deprecated)"},
 880         {T_PTR,         "PTR",          "domain name pointer"},
 881         {T_HINFO,       "HINFO",        "host information"},
 882         {T_MINFO,       "MINFO",        "mailbox information"},
 883         {T_MX,          "MX",           "mail exchanger"},
 884         {T_TXT,         "TXT",          "text"},
 885         {T_RP,          "RP",           "responsible person"},
 886         {T_AFSDB,       "AFSDB",        "DCE or AFS server"},
 887         {T_X25,         "X25",          "X25 address"},
 888         {T_ISDN,        "ISDN",         "ISDN address"},
 889         {T_RT,          "RT",           "router"},
 890         {T_NSAP,        "NSAP",         "nsap address"},
 891         {T_NSAP_PTR,    "NSAP_PTR",     "domain name pointer"},
 892         {T_SIG,         "SIG",          "signature"},
 893         {T_KEY,         "KEY",          "key"},
 894         {T_PX,          "PX",           "mapping information"},
 895         {T_GPOS,        "GPOS",         "geographical position (withdrawn)"},
 896         {T_AAAA,        "AAAA",         "IPv6 address"},
 897         {T_LOC,         "LOC",          "location"},
 898         {T_NXT,         "NXT",          "next valid name (unimplemented)"},
 899         {T_EID,         "EID",          "endpoint identifier (unimplemented)"},
 900         {T_NIMLOC,      "NIMLOC",       "NIMROD locator (unimplemented)"},
 901         {T_SRV,         "SRV",          "server selection"},
 902         {T_ATMA,        "ATMA",         "ATM address (unimplemented)"},
 903         {T_IXFR,        "IXFR",         "incremental zone transfer"},
 904         {T_AXFR,        "AXFR",         "zone transfer"},
 905         {T_MAILB,       "MAILB",        "mailbox-related data (deprecated)"},
 906         {T_MAILA,       "MAILA",        "mail agent (deprecated)"},
 907         {T_UINFO,       "UINFO",        "user information (nonstandard)"},
 908         {T_UID,         "UID",          "user ID (nonstandard)"},
 909         {T_GID,         "GID",          "group ID (nonstandard)"},
 910 #ifdef ALLOW_T_UNSPEC
 911         {T_UNSPEC,      "UNSPEC",       "unspecified data (nonstandard)"},
 912 #endif /* ALLOW_T_UNSPEC */
 913         {T_ANY,         "ANY",          "\"any\""},
 914         {0,             NULL,           NULL}
 915 };
 916
 917 int
 918 __sym_ston(syms, name, success)
 919         const struct res_sym *syms;
 920         char *name;
 921         int *success;
 922 {
 923 #ifdef _LIBC
 924         /* Changed to prevent warning. --drepper@gnu  */
 925         for (; syms->name != 0; syms++) {
 926 #else
 927         for (NULL; syms->name != 0; syms++) {
 928 #endif
 929                 if (strcasecmp (name, syms->name) == 0) {
 930                         if (success)
 931                                 *success = 1;
 932                         return (syms->number);
 933                 }
 934         }
 935         if (success)
 936                 *success = 0;
 937         return (syms->number);          /* The default value. */
 938 }
 939
 940 const char *
 941 __sym_ntos(syms, number, success)
 942         const struct res_sym *syms;
 943         int number;
 944         int *success;
 945 {
 946         static char unname[20];
 947
 948 #ifdef _LIBC
 949         /* Changed to prevent warning. --drepper@gnu  */
 950         for (; syms->name != 0; syms++) {
 951 #else
 952         for (NULL; syms->name != 0; syms++) {
 953 #endif
 954                 if (number == syms->number) {
 955                         if (success)
 956                                 *success = 1;
 957                         return (syms->name);
 958                 }
 959         }
 960
 961         sprintf (unname, "%d", number);
 962         if (success)
 963                 *success = 0;
 964         return (unname);
 965 }
 966
 967
 968 const char *
 969 __sym_ntop(syms, number, success)
 970         const struct res_sym *syms;
 971         int number;
 972         int *success;
 973 {
 974         static char unname[20];
 975
 976 #ifdef _LIBC
 977         /* Changed to prevent warning. --drepper@gnu  */
 978         for (; syms->name != 0; syms++) {
 979 #else
 980         for (NULL; syms->name != 0; syms++) {
 981 #endif
 982                 if (number == syms->number) {
 983                         if (success)
 984                                 *success = 1;
 985                         return (syms->humanname);
 986                 }
 987         }
 988         sprintf(unname, "%d", number);
 989         if (success)
 990                 *success = 0;
 991         return (unname);
 992 }
 993
 994 /*
 995  * Return a string for the type
 996  */
 997 const char *
 998 __p_type(type)
 999         int type;
1000 {
1001         return (__sym_ntos (__p_type_syms, type, (int *)0));
1002 }
1003
1004 /*
1005  * Return a mnemonic for class
1006  */
1007 const char *
1008 __p_class(class)
1009         int class;
1010 {
1011         return (__sym_ntos (__p_class_syms, class, (int *)0));
1012 }
1013
1014 /*
1015  * Return a mnemonic for an option
1016  */
1017 const char *
1018 __p_option(option)
1019         u_long option;
1020 {
1021         static char nbuf[40];
1022
1023         switch (option) {
1024         case RES_INIT:          return "init";
1025         case RES_DEBUG:         return "debug";
1026         case RES_AAONLY:        return "aaonly(unimpl)";
1027         case RES_USEVC:         return "usevc";
1028         case RES_PRIMARY:       return "primry(unimpl)";
1029         case RES_IGNTC:         return "igntc";
1030         case RES_RECURSE:       return "recurs";
1031         case RES_DEFNAMES:      return "defnam";
1032         case RES_STAYOPEN:      return "styopn";
1033         case RES_DNSRCH:        return "dnsrch";
1034         case RES_INSECURE1:     return "insecure1";
1035         case RES_INSECURE2:     return "insecure2";
1036         default:                sprintf(nbuf, "?0x%lx?", (u_long)option);
1037                                 return (nbuf);
1038         }
1039 }
1040
1041 /*
1042  * Return a mnemonic for a time to live
1043  */
1044 char *
1045 __p_time(value)
1046         u_int32_t value;
1047 {
1048         static char nbuf[40];
1049         int secs, mins, hours, days;
1050         register char *p;
1051
1052         if (value == 0) {
1053                 strcpy(nbuf, "0 secs");
1054                 return (nbuf);
1055         }
1056
1057         secs = value % 60;
1058         value /= 60;
1059         mins = value % 60;
1060         value /= 60;
1061         hours = value % 24;
1062         value /= 24;
1063         days = value;
1064         value = 0;
1065
1066 #define PLURALIZE(x)    x, (x == 1) ? "" : "s"
1067         p = nbuf;
1068         if (days) {
1069                 (void)sprintf(p, "%d day%s", PLURALIZE(days));
1070                 while (*++p);
1071         }
1072         if (hours) {
1073                 if (days)
1074                         *p++ = ' ';
1075                 (void)sprintf(p, "%d hour%s", PLURALIZE(hours));
1076                 while (*++p);
1077         }
1078         if (mins) {
1079                 if (days || hours)
1080                         *p++ = ' ';
1081                 (void)sprintf(p, "%d min%s", PLURALIZE(mins));
1082                 while (*++p);
1083         }
1084         if (secs || ! (days || hours || mins)) {
1085                 if (days || hours || mins)
1086                         *p++ = ' ';
1087                 (void)sprintf(p, "%d sec%s", PLURALIZE(secs));
1088         }
1089         return (nbuf);
1090 }
1091
1092 /*
1093  * routines to convert between on-the-wire RR format and zone file format.
1094  * Does not contain conversion to/from decimal degrees; divide or multiply
1095  * by 60*60*1000 for that.
1096  */
1097
1098 static unsigned int poweroften[10] = {1, 10, 100, 1000, 10000, 100000,
1099                                       1000000,10000000,100000000,1000000000};
1100
1101 /* takes an XeY precision/size value, returns a string representation. */
1102 static const char *
1103 precsize_ntoa(prec)
1104         u_int8_t prec;
1105 {
1106         static char retbuf[sizeof "90000000.00"];
1107         unsigned long val;
1108         int mantissa, exponent;
1109
1110         mantissa = (int)((prec >> 4) & 0x0f) % 10;
1111         exponent = (int)((prec >> 0) & 0x0f) % 10;
1112
1113         val = mantissa * poweroften[exponent];
1114
1115         (void) sprintf(retbuf, "%ld.%.2ld", val/100, val%100);
1116         return (retbuf);
1117 }
1118
1119 /* converts ascii size/precision X * 10**Y(cm) to 0xXY.  moves pointer. */
1120 static u_int8_t
1121 precsize_aton(strptr)
1122         char **strptr;
1123 {
1124         unsigned int mval = 0, cmval = 0;
1125         u_int8_t retval = 0;
1126         register char *cp;
1127         register int exponent;
1128         register int mantissa;
1129
1130         cp = *strptr;
1131
1132         while (isdigit(*cp))
1133                 mval = mval * 10 + (*cp++ - '0');
1134
1135         if (*cp == '.') {               /* centimeters */
1136                 cp++;
1137                 if (isdigit(*cp)) {
1138                         cmval = (*cp++ - '0') * 10;
1139                         if (isdigit(*cp)) {
1140                                 cmval += (*cp++ - '0');
1141                         }
1142                 }
1143         }
1144         cmval = (mval * 100) + cmval;
1145
1146         for (exponent = 0; exponent < 9; exponent++)
1147                 if (cmval < poweroften[exponent+1])
1148                         break;
1149
1150         mantissa = cmval / poweroften[exponent];
1151         if (mantissa > 9)
1152                 mantissa = 9;
1153
1154         retval = (mantissa << 4) | exponent;
1155
1156         *strptr = cp;
1157
1158         return (retval);
1159 }
1160
1161 /* converts ascii lat/lon to unsigned encoded 32-bit number.  moves pointer. */
1162 static u_int32_t
1163 latlon2ul(latlonstrptr,which)
1164         char **latlonstrptr;
1165         int *which;
1166 {
1167         register char *cp;
1168         u_int32_t retval;
1169         int deg = 0, min = 0, secs = 0, secsfrac = 0;
1170
1171         cp = *latlonstrptr;
1172
1173         while (isdigit(*cp))
1174                 deg = deg * 10 + (*cp++ - '0');
1175
1176         while (isspace(*cp))
1177                 cp++;
1178
1179         if (!(isdigit(*cp)))
1180                 goto fndhemi;
1181
1182         while (isdigit(*cp))
1183                 min = min * 10 + (*cp++ - '0');
1184
1185         while (isspace(*cp))
1186                 cp++;
1187
1188         if (!(isdigit(*cp)))
1189                 goto fndhemi;
1190
1191         while (isdigit(*cp))
1192                 secs = secs * 10 + (*cp++ - '0');
1193
1194         if (*cp == '.') {               /* decimal seconds */
1195                 cp++;
1196                 if (isdigit(*cp)) {
1197                         secsfrac = (*cp++ - '0') * 100;
1198                         if (isdigit(*cp)) {
1199                                 secsfrac += (*cp++ - '0') * 10;
1200                                 if (isdigit(*cp)) {
1201                                         secsfrac += (*cp++ - '0');
1202                                 }
1203                         }
1204                 }
1205         }
1206
1207         while (!isspace(*cp))   /* if any trailing garbage */
1208                 cp++;
1209
1210         while (isspace(*cp))
1211                 cp++;
1212
1213  fndhemi:
1214         switch (*cp) {
1215         case 'N': case 'n':
1216         case 'E': case 'e':
1217                 retval = ((unsigned)1<<31)
1218                         + (((((deg * 60) + min) * 60) + secs) * 1000)
1219                         + secsfrac;
1220                 break;
1221         case 'S': case 's':
1222         case 'W': case 'w':
1223                 retval = ((unsigned)1<<31)
1224                         - (((((deg * 60) + min) * 60) + secs) * 1000)
1225                         - secsfrac;
1226                 break;
1227         default:
1228                 retval = 0;     /* invalid value -- indicates error */
1229                 break;
1230         }
1231
1232         switch (*cp) {
1233         case 'N': case 'n':
1234         case 'S': case 's':
1235                 *which = 1;     /* latitude */
1236                 break;
1237         case 'E': case 'e':
1238         case 'W': case 'w':
1239                 *which = 2;     /* longitude */
1240                 break;
1241         default:
1242                 *which = 0;     /* error */
1243                 break;
1244         }
1245
1246         cp++;                   /* skip the hemisphere */
1247
1248         while (!isspace(*cp))   /* if any trailing garbage */
1249                 cp++;
1250
1251         while (isspace(*cp))    /* move to next field */
1252                 cp++;
1253
1254         *latlonstrptr = cp;
1255
1256         return (retval);
1257 }
1258
1259 /* converts a zone file representation in a string to an RDATA on-the-wire
1260  * representation. */
1261 int
1262 loc_aton(ascii, binary)
1263         const char *ascii;
1264         u_char *binary;
1265 {
1266         const char *cp, *maxcp;
1267         u_char *bcp;
1268
1269         u_int32_t latit = 0, longit = 0, alt = 0;
1270         u_int32_t lltemp1 = 0, lltemp2 = 0;
1271         int altmeters = 0, altfrac = 0, altsign = 1;
1272         u_int8_t hp = 0x16;     /* default = 1e6 cm = 10000.00m = 10km */
1273         u_int8_t vp = 0x13;     /* default = 1e3 cm = 10.00m */
1274         u_int8_t siz = 0x12;    /* default = 1e2 cm = 1.00m */
1275         int which1 = 0, which2 = 0;
1276
1277         cp = ascii;
1278         maxcp = cp + strlen(ascii);
1279
1280         lltemp1 = latlon2ul(&cp, &which1);
1281
1282         lltemp2 = latlon2ul(&cp, &which2);
1283
1284         switch (which1 + which2) {
1285         case 3:                 /* 1 + 2, the only valid combination */
1286                 if ((which1 == 1) && (which2 == 2)) { /* normal case */
1287                         latit = lltemp1;
1288                         longit = lltemp2;
1289                 } else if ((which1 == 2) && (which2 == 1)) { /* reversed */
1290                         longit = lltemp1;
1291                         latit = lltemp2;
1292                 } else {        /* some kind of brokenness */
1293                         return (0);
1294                 }
1295                 break;
1296         default:                /* we didn't get one of each */
1297                 return (0);
1298         }
1299
1300         /* altitude */
1301         if (*cp == '-') {
1302                 altsign = -1;
1303                 cp++;
1304         }
1305
1306         if (*cp == '+')
1307                 cp++;
1308
1309         while (isdigit(*cp))
1310                 altmeters = altmeters * 10 + (*cp++ - '0');
1311
1312         if (*cp == '.') {               /* decimal meters */
1313                 cp++;
1314                 if (isdigit(*cp)) {
1315                         altfrac = (*cp++ - '0') * 10;
1316                         if (isdigit(*cp)) {
1317                                 altfrac += (*cp++ - '0');
1318                         }
1319                 }
1320         }
1321
1322         alt = (10000000 + (altsign * (altmeters * 100 + altfrac)));
1323
1324         while (!isspace(*cp) && (cp < maxcp)) /* if trailing garbage or m */
1325                 cp++;
1326
1327         while (isspace(*cp) && (cp < maxcp))
1328                 cp++;
1329
1330         if (cp >= maxcp)
1331                 goto defaults;
1332
1333         siz = precsize_aton(&cp);
1334
1335         while (!isspace(*cp) && (cp < maxcp))   /* if trailing garbage or m */
1336                 cp++;
1337
1338         while (isspace(*cp) && (cp < maxcp))
1339                 cp++;
1340
1341         if (cp >= maxcp)
1342                 goto defaults;
1343
1344         hp = precsize_aton(&cp);
1345
1346         while (!isspace(*cp) && (cp < maxcp))   /* if trailing garbage or m */
1347                 cp++;
1348
1349         while (isspace(*cp) && (cp < maxcp))
1350                 cp++;
1351
1352         if (cp >= maxcp)
1353                 goto defaults;
1354
1355         vp = precsize_aton(&cp);
1356
1357  defaults:
1358
1359         bcp = binary;
1360         *bcp++ = (u_int8_t) 0;  /* version byte */
1361         *bcp++ = siz;
1362         *bcp++ = hp;
1363         *bcp++ = vp;
1364         PUTLONG(latit,bcp);
1365         PUTLONG(longit,bcp);
1366         PUTLONG(alt,bcp);
1367
1368         return (16);            /* size of RR in octets */
1369 }
1370
1371 /* takes an on-the-wire LOC RR and formats it in a human readable format. */
1372 char *
1373 loc_ntoa(binary, ascii)
1374         const u_char *binary;
1375         char *ascii;
1376 {
1377         static char *error = "?";
1378         register const u_char *cp = binary;
1379
1380         int latdeg, latmin, latsec, latsecfrac;
1381         int longdeg, longmin, longsec, longsecfrac;
1382         char northsouth, eastwest;
1383         int altmeters, altfrac, altsign;
1384
1385         const int referencealt = 100000 * 100;
1386
1387         int32_t latval, longval, altval;
1388         u_int32_t templ;
1389         u_int8_t sizeval, hpval, vpval, versionval;
1390
1391         char *sizestr, *hpstr, *vpstr;
1392
1393         versionval = *cp++;
1394
1395         if (versionval) {
1396                 sprintf(ascii, "; error: unknown LOC RR version");
1397                 return (ascii);
1398         }
1399
1400         sizeval = *cp++;
1401
1402         hpval = *cp++;
1403         vpval = *cp++;
1404
1405         GETLONG(templ, cp);
1406         latval = (templ - ((unsigned)1<<31));
1407
1408         GETLONG(templ, cp);
1409         longval = (templ - ((unsigned)1<<31));
1410
1411         GETLONG(templ, cp);
1412         if (templ < referencealt) { /* below WGS 84 spheroid */
1413                 altval = referencealt - templ;
1414                 altsign = -1;
1415         } else {
1416                 altval = templ - referencealt;
1417                 altsign = 1;
1418         }
1419
1420         if (latval < 0) {
1421                 northsouth = 'S';
1422                 latval = -latval;
1423         } else
1424                 northsouth = 'N';
1425
1426         latsecfrac = latval % 1000;
1427         latval = latval / 1000;
1428         latsec = latval % 60;
1429         latval = latval / 60;
1430         latmin = latval % 60;
1431         latval = latval / 60;
1432         latdeg = latval;
1433
1434         if (longval < 0) {
1435                 eastwest = 'W';
1436                 longval = -longval;
1437         } else
1438                 eastwest = 'E';
1439
1440         longsecfrac = longval % 1000;
1441         longval = longval / 1000;
1442         longsec = longval % 60;
1443         longval = longval / 60;
1444         longmin = longval % 60;
1445         longval = longval / 60;
1446         longdeg = longval;
1447
1448         altfrac = altval % 100;
1449         altmeters = (altval / 100) * altsign;
1450
1451         if ((sizestr = strdup(precsize_ntoa(sizeval))) == NULL)
1452                 sizestr = error;
1453         if ((hpstr = strdup(precsize_ntoa(hpval))) == NULL)
1454                 hpstr = error;
1455         if ((vpstr = strdup(precsize_ntoa(vpval))) == NULL)
1456                 vpstr = error;
1457
1458         sprintf(ascii,
1459               "%d %.2d %.2d.%.3d %c %d %.2d %.2d.%.3d %c %d.%.2dm %sm %sm %sm",
1460                 latdeg, latmin, latsec, latsecfrac, northsouth,
1461                 longdeg, longmin, longsec, longsecfrac, eastwest,
1462                 altmeters, altfrac, sizestr, hpstr, vpstr);
1463
1464         if (sizestr != error)
1465                 free(sizestr);
1466         if (hpstr != error)
1467                 free(hpstr);
1468         if (vpstr != error)
1469                 free(vpstr);
1470
1471         return (ascii);
1472 }
1473
1474
1475 /* Return the number of DNS hierarchy levels in the name. */
1476 int
1477 __dn_count_labels(name)
1478         char *name;
1479 {
1480         int i, len, count;
1481
1482         len = strlen(name);
1483
1484         for(i = 0, count = 0; i < len; i++) {
1485                 if (name[i] == '.')
1486                         count++;
1487         }
1488
1489         /* don't count initial wildcard */
1490         if (name[0] == '*')
1491                 if (count)
1492                         count--;
1493
1494         /* don't count the null label for root. */
1495         /* if terminating '.' not found, must adjust */
1496         /* count to include last label */
1497         if (len > 0 && name[len-1] != '.')
1498                 count++;
1499         return (count);
1500 }
1501
1502
1503 /*
1504  * Make dates expressed in seconds-since-Jan-1-1970 easy to read.
1505  * SIG records are required to be printed like this, by the Secure DNS RFC.
1506  */
1507 char *
1508 __p_secstodate (secs)
1509         unsigned long secs;
1510 {
1511         static char output[15];         /* YYYYMMDDHHMMSS and null */
1512         time_t clock = secs;
1513         struct tm time;
1514
1515         __gmtime_r(&clock, &time);
1516         time.tm_year += 1900;
1517         time.tm_mon += 1;
1518         sprintf(output, "%04d%02d%02d%02d%02d%02d",
1519                 time.tm_year, time.tm_mon, time.tm_mday,
1520                 time.tm_hour, time.tm_min, time.tm_sec);
1521         return (output);
1522 }