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 #undef p_query
 242 /* ultrix 4.0's packaging has some icky packaging.  alias for it here.
 243  * there is more junk of this kind over in res_comp.c.
 244  */
 245 void
 246 p_query(msg)
 247         const u_char *msg;
 248 {
 249         __p_query(msg);
 250 }
 251 #endif
 252
 253 /*
 254  * Print the current options.
 255  * This is intended to be primarily a debugging routine.
 256  */
 257 void
 258 __fp_resstat(statp, file)
 259         struct __res_state *statp;
 260         FILE *file;
 261 {
 262         register u_long mask;
 263
 264         fprintf(file, ";; res options:");
 265         if (!statp)
 266                 statp = &_res;
 267         for (mask = 1;  mask != 0;  mask <<= 1)
 268                 if (statp->options & mask)
 269                         fprintf(file, " %s", p_option(mask));
 270         putc('\n', file);
 271 }
 272
 273 /*
 274  * Print the contents of a query.
 275  * This is intended to be primarily a debugging routine.
 276  */
 277 void
 278 __fp_nquery(msg, len, file)
 279         const u_char *msg;
 280         int len;
 281         FILE *file;
 282 {
 283         register const u_char *cp, *endMark;
 284         register const HEADER *hp;
 285         register int n;
 286
 287         if ((_res.options & RES_INIT) == 0 && res_init() == -1)
 288                 return;
 289
 290 #define TruncTest(x) if (x >= endMark) goto trunc
 291 #define ErrorTest(x) if (x == NULL) goto error
 292
 293         /*
 294          * Print header fields.
 295          */
 296         hp = (HEADER *)msg;
 297         cp = msg + HFIXEDSZ;
 298         endMark = cp + len;
 299         if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEADX) || hp->rcode) {
 300                 fprintf(file, ";; ->>HEADER<<- opcode: %s, status: %s, id: %d",
 301                         _res_opcodes[hp->opcode],
 302                         _res_resultcodes[hp->rcode],
 303                         ntohs(hp->id));
 304                 putc('\n', file);
 305         }
 306         if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEADX))
 307                 putc(';', file);
 308         if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEAD2)) {
 309                 fprintf(file, "; flags:");
 310                 if (hp->qr)
 311                         fprintf(file, " qr");
 312                 if (hp->aa)
 313                         fprintf(file, " aa");
 314                 if (hp->tc)
 315                         fprintf(file, " tc");
 316                 if (hp->rd)
 317                         fprintf(file, " rd");
 318                 if (hp->ra)
 319                         fprintf(file, " ra");
 320                 if (hp->unused)
 321                         fprintf(file, " UNUSED-BIT-ON");
 322                 if (hp->ad)
 323                         fprintf(file, " ad");
 324                 if (hp->cd)
 325                         fprintf(file, " cd");
 326         }
 327         if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEAD1)) {
 328                 fprintf(file, "; Ques: %d", ntohs(hp->qdcount));
 329                 fprintf(file, ", Ans: %d", ntohs(hp->ancount));
 330                 fprintf(file, ", Auth: %d", ntohs(hp->nscount));
 331                 fprintf(file, ", Addit: %d", ntohs(hp->arcount));
 332         }
 333         if ((!_res.pfcode) || (_res.pfcode &
 334                 (RES_PRF_HEADX | RES_PRF_HEAD2 | RES_PRF_HEAD1))) {
 335                 putc('\n',file);
 336         }
 337         /*
 338          * Print question records.
 339          */
 340         if (n = ntohs(hp->qdcount)) {
 341                 if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
 342                         fprintf(file, ";; QUESTIONS:\n");
 343                 while (--n >= 0) {
 344                         if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
 345                                 fprintf(file, ";;\t");
 346                         TruncTest(cp);
 347                         if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
 348                                 cp = p_cdnname(cp, msg, len, file);
 349                         else {
 350                                 int n;
 351                                 char name[MAXDNAME];
 352
 353                                 if ((n = dn_expand(msg, msg+len, cp, name,
 354                                                 sizeof name)) < 0)
 355                                         cp = NULL;
 356                                 else
 357                                         cp += n;
 358                         }
 359                         ErrorTest(cp);
 360                         TruncTest(cp);
 361                         if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
 362                                 fprintf(file, ", type = %s",
 363                                         __p_type(_getshort((u_char*)cp)));
 364                         cp += INT16SZ;
 365                         TruncTest(cp);
 366                         if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
 367                                 fprintf(file, ", class = %s\n",
 368                                         __p_class(_getshort((u_char*)cp)));
 369                         cp += INT16SZ;
 370                         if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
 371                                 putc('\n', file);
 372                 }
 373         }
 374         /*
 375          * Print authoritative answer records
 376          */
 377         TruncTest(cp);
 378         cp = do_rrset(msg, len, cp, hp->ancount, RES_PRF_ANS, file,
 379                       ";; ANSWERS:\n");
 380         ErrorTest(cp);
 381
 382         /*
 383          * print name server records
 384          */
 385         TruncTest(cp);
 386         cp = do_rrset(msg, len, cp, hp->nscount, RES_PRF_AUTH, file,
 387                       ";; AUTHORITY RECORDS:\n");
 388         ErrorTest(cp);
 389
 390         TruncTest(cp);
 391         /*
 392          * print additional records
 393          */
 394         cp = do_rrset(msg, len, cp, hp->arcount, RES_PRF_ADD, file,
 395                       ";; ADDITIONAL RECORDS:\n");
 396         ErrorTest(cp);
 397         return;
 398  trunc:
 399         fprintf(file, "\n;; ...truncated\n");
 400         return;
 401  error:
 402         fprintf(file, "\n;; ...malformed\n");
 403 }
 404
 405 void
 406 __fp_query(msg, file)
 407         const u_char *msg;
 408         FILE *file;
 409 {
 410         fp_nquery(msg, PACKETSZ, file);
 411 }
 412
 413 const u_char *
 414 __p_cdnname(cp, msg, len, file)
 415         const u_char *cp, *msg;
 416         int len;
 417         FILE *file;
 418 {
 419         char name[MAXDNAME];
 420         int n;
 421
 422         if ((n = dn_expand(msg, msg + len, cp, name, sizeof name)) < 0)
 423                 return (NULL);
 424         if (name[0] == '\0')
 425                 putc('.', file);
 426         else
 427                 fputs(name, file);
 428         return (cp + n);
 429 }
 430
 431 const u_char *
 432 __p_cdname(cp, msg, file)
 433         const u_char *cp, *msg;
 434         FILE *file;
 435 {
 436         return (p_cdnname(cp, msg, PACKETSZ, file));
 437 }
 438
 439
 440 /* Return a fully-qualified domain name from a compressed name (with
 441    length supplied).  */
 442
 443 const u_char *
 444 __p_fqnname(cp, msg, msglen, name, namelen)
 445         const u_char *cp, *msg;
 446         int msglen;
 447         char *name;
 448         int namelen;
 449 {
 450         int n, newlen;
 451
 452         if ((n = dn_expand(msg, cp + msglen, cp, name, namelen)) < 0)
 453                 return (NULL);
 454         newlen = strlen (name);
 455         if (newlen == 0 || name[newlen - 1] != '.')
 456                 if (newlen+1 >= namelen)        /* Lack space for final dot */
 457                         return (NULL);
 458                 else
 459                         strcpy(name + newlen, ".");
 460         return (cp + n);
 461 }
 462
 463 /* XXX: the rest of these functions need to become length-limited, too. (vix)
 464  */
 465
 466 const u_char *
 467 __p_fqname(cp, msg, file)
 468         const u_char *cp, *msg;
 469         FILE *file;
 470 {
 471         char name[MAXDNAME];
 472         const u_char *n;
 473
 474         n = __p_fqnname(cp, msg, MAXCDNAME, name, sizeof name);
 475         if (n == NULL)
 476                 return (NULL);
 477         fputs(name, file);
 478         return (n);
 479 }
 480
 481 /*
 482  * Print resource record fields in human readable form.
 483  */
 484 const u_char *
 485 __p_rr(cp, msg, file)
 486         const u_char *cp, *msg;
 487         FILE *file;
 488 {
 489         int type, class, dlen, n, c;
 490         struct in_addr inaddr;
 491         const u_char *cp1, *cp2;
 492         u_int32_t tmpttl, t;
 493         int lcnt;
 494         u_int16_t keyflags;
 495         char rrname[MAXDNAME];          /* The fqdn of this RR */
 496         char base64_key[MAX_KEY_BASE64];
 497
 498         if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
 499                 __set_h_errno (NETDB_INTERNAL);
 500                 return (NULL);
 501         }
 502         cp = __p_fqnname(cp, msg, MAXCDNAME, rrname, sizeof rrname);
 503         if (!cp)
 504                 return (NULL);                  /* compression error */
 505         fputs(rrname, file);
 506
 507         type = _getshort((u_char*)cp);
 508         cp += INT16SZ;
 509         class = _getshort((u_char*)cp);
 510         cp += INT16SZ;
 511         tmpttl = _getlong((u_char*)cp);
 512         cp += INT32SZ;
 513         dlen = _getshort((u_char*)cp);
 514         cp += INT16SZ;
 515         cp1 = cp;
 516         if ((!_res.pfcode) || (_res.pfcode & RES_PRF_TTLID))
 517                 fprintf(file, "\t%lu", (u_long)tmpttl);
 518         if ((!_res.pfcode) || (_res.pfcode & RES_PRF_CLASS))
 519                 fprintf(file, "\t%s", __p_class(class));
 520         fprintf(file, "\t%s", __p_type(type));
 521         /*
 522          * Print type specific data, if appropriate
 523          */
 524         switch (type) {
 525         case T_A:
 526                 switch (class) {
 527                 case C_IN:
 528                 case C_HS:
 529                         bcopy(cp, (char *)&inaddr, INADDRSZ);
 530                         if (dlen == 4) {
 531                                 fprintf(file, "\t%s", inet_ntoa(inaddr));
 532                                 cp += dlen;
 533                         } else if (dlen == 7) {
 534                                 char *address;
 535                                 u_char protocol;
 536                                 u_short port;
 537
 538                                 address = inet_ntoa(inaddr);
 539                                 cp += INADDRSZ;
 540                                 protocol = *(u_char*)cp;
 541                                 cp += sizeof (u_char);
 542                                 port = _getshort((u_char*)cp);
 543                                 cp += INT16SZ;
 544                                 fprintf(file, "\t%s\t; proto %d, port %d",
 545                                         address, protocol, port);
 546                         }
 547                         break;
 548                 default:
 549                         cp += dlen;
 550                 }
 551                 break;
 552         case T_CNAME:
 553         case T_MB:
 554         case T_MG:
 555         case T_MR:
 556         case T_NS:
 557         case T_PTR:
 558                 putc('\t', file);
 559                 if ((cp = p_fqname(cp, msg, file)) == NULL)
 560                         return (NULL);
 561                 break;
 562
 563         case T_HINFO:
 564         case T_ISDN:
 565                 cp2 = cp + dlen;
 566                 (void) fputs("\t\"", file);
 567                 if ((n = (unsigned char) *cp++) != 0) {
 568                         for (c = n; c > 0 && cp < cp2; c--) {
 569                                 if (strchr("\n\"\\", *cp))
 570                                         (void) putc('\\', file);
 571                                 (void) putc(*cp++, file);
 572                         }
 573                 }
 574                 putc('"', file);
 575                 if (cp < cp2 && (n = (unsigned char) *cp++) != 0) {
 576                         (void) fputs ("\t\"", file);
 577                         for (c = n; c > 0 && cp < cp2; c--) {
 578                                 if (strchr("\n\"\\", *cp))
 579                                         (void) putc('\\', file);
 580                                 (void) putc(*cp++, file);
 581                         }
 582                         putc('"', file);
 583                 } else if (type == T_HINFO) {
 584                         (void) fputs("\"?\"", file);
 585                         fprintf(file, "\n;; *** Warning *** OS-type missing");
 586                 }
 587                 break;
 588
 589         case T_SOA:
 590                 putc('\t', file);
 591                 if ((cp = p_fqname(cp, msg, file)) == NULL)
 592                         return (NULL);
 593                 putc(' ', file);
 594                 if ((cp = p_fqname(cp, msg, file)) == NULL)
 595                         return (NULL);
 596                 fputs(" (\n", file);
 597                 t = _getlong((u_char*)cp);  cp += INT32SZ;
 598                 fprintf(file, "\t\t\t%lu\t; serial\n", (u_long)t);
 599                 t = _getlong((u_char*)cp);  cp += INT32SZ;
 600                 fprintf(file, "\t\t\t%lu\t; refresh (%s)\n",
 601                         (u_long)t, __p_time(t));
 602                 t = _getlong((u_char*)cp);  cp += INT32SZ;
 603                 fprintf(file, "\t\t\t%lu\t; retry (%s)\n",
 604                         (u_long)t, __p_time(t));
 605                 t = _getlong((u_char*)cp);  cp += INT32SZ;
 606                 fprintf(file, "\t\t\t%lu\t; expire (%s)\n",
 607                         (u_long)t, __p_time(t));
 608                 t = _getlong((u_char*)cp);  cp += INT32SZ;
 609                 fprintf(file, "\t\t\t%lu )\t; minimum (%s)",
 610                         (u_long)t, __p_time(t));
 611                 break;
 612
 613         case T_MX:
 614         case T_AFSDB:
 615         case T_RT:
 616                 fprintf(file, "\t%d ", _getshort((u_char*)cp));
 617                 cp += INT16SZ;
 618                 if ((cp = p_fqname(cp, msg, file)) == NULL)
 619                         return (NULL);
 620                 break;
 621
 622         case T_PX:
 623                 fprintf(file, "\t%d ", _getshort((u_char*)cp));
 624                 cp += INT16SZ;
 625                 if ((cp = p_fqname(cp, msg, file)) == NULL)
 626                         return (NULL);
 627                 putc(' ', file);
 628                 if ((cp = p_fqname(cp, msg, file)) == NULL)
 629                         return (NULL);
 630                 break;
 631
 632         case T_X25:
 633                 cp2 = cp + dlen;
 634                 (void) fputs("\t\"", file);
 635                 if ((n = (unsigned char) *cp++) != 0) {
 636                         for (c = n; c > 0 && cp < cp2; c--) {
 637                                 if (strchr("\n\"\\", *cp))
 638                                         (void) putc('\\', file);
 639                                 (void) putc(*cp++, file);
 640                         }
 641                 }
 642                 putc('"', file);
 643                 break;
 644
 645         case T_TXT:
 646                 (void) putc('\t', file);
 647                 cp2 = cp1 + dlen;
 648                 while (cp < cp2) {
 649                         putc('"', file);
 650                         if (n = (unsigned char) *cp++) {
 651                                 for (c = n; c > 0 && cp < cp2; c--) {
 652                                         if (strchr("\n\"\\", *cp))
 653                                                 (void) putc('\\', file);
 654                                         (void) putc(*cp++, file);
 655                                 }
 656                         }
 657                         putc('"', file);
 658                         if (cp < cp2)
 659                                 putc(' ', file);
 660                 }
 661                 break;
 662
 663         case T_NSAP:
 664                 (void) fprintf(file, "\t%s", inet_nsap_ntoa(dlen, cp, NULL));
 665                 cp += dlen;
 666                 break;
 667
 668         case T_AAAA: {
 669                 char t[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255"];
 670
 671                 fprintf(file, "\t%s", inet_ntop(AF_INET6, cp, t, sizeof t));
 672                 cp += dlen;
 673                 break;
 674         }
 675
 676         case T_LOC: {
 677                 char t[255];
 678
 679                 (void) fprintf(file, "\t%s", loc_ntoa(cp, t));
 680                 cp += dlen;
 681                 break;
 682         }
 683
 684         case T_SRV: {
 685                 u_int priority, weight, port;
 686
 687                 priority = _getshort(cp);  cp += INT16SZ;
 688                 weight   = _getshort(cp);  cp += INT16SZ;
 689                 port     = _getshort(cp);  cp += INT16SZ;
 690                 fprintf(file, "\t%u %u %u ", priority, weight, port);
 691                 if ((cp = p_fqname(cp, msg, file)) == NULL)
 692                         return (NULL);
 693                 break;
 694         }
 695
 696         case T_MINFO:
 697         case T_RP:
 698                 putc('\t', file);
 699                 if ((cp = p_fqname(cp, msg, file)) == NULL)
 700                         return (NULL);
 701                 putc(' ', file);
 702                 if ((cp = p_fqname(cp, msg, file)) == NULL)
 703                         return (NULL);
 704                 break;
 705
 706         case T_UINFO:
 707                 putc('\t', file);
 708                 fputs((char *)cp, file);
 709                 cp += dlen;
 710                 break;
 711
 712         case T_UID:
 713         case T_GID:
 714                 if (dlen == 4) {
 715                         fprintf(file, "\t%u", _getlong((u_char*)cp));
 716                         cp += INT32SZ;
 717                 }
 718                 break;
 719
 720         case T_WKS:
 721                 if (dlen < INT32SZ + 1)
 722                         break;
 723                 bcopy(cp, (char *)&inaddr, INADDRSZ);
 724                 cp += INT32SZ;
 725                 fprintf(file, "\t%s %s ( ",
 726                         inet_ntoa(inaddr),
 727                         deproto((int) *cp));
 728                 cp += sizeof (u_char);
 729                 n = 0;
 730                 lcnt = 0;
 731                 while (cp < cp1 + dlen) {
 732                         c = *cp++;
 733                         do {
 734                                 if (c & 0200) {
 735                                         if (lcnt == 0) {
 736                                                 fputs("\n\t\t\t", file);
 737                                                 lcnt = 5;
 738                                         }
 739                                         fputs(dewks(n), file);
 740                                         putc(' ', file);
 741                                         lcnt--;
 742                                 }
 743                                 c <<= 1;
 744                         } while (++n & 07);
 745                 }
 746                 putc(')', file);
 747                 break;
 748
 749         case T_KEY:
 750                 putc('\t', file);
 751                 keyflags = _getshort(cp);
 752                 cp += 2;
 753                 fprintf(file,"0x%04x", keyflags );      /* flags */
 754                 fprintf(file," %u", *cp++);     /* protocol */
 755                 fprintf(file," %u (", *cp++);   /* algorithm */
 756
 757                 n = b64_ntop(cp, (cp1 + dlen) - cp,
 758                              base64_key, sizeof base64_key);
 759                 for (c = 0; c < n; ++c) {
 760                         if (0 == (c & 0x3F))
 761                                 fprintf(file, "\n\t");
 762                         putc(base64_key[c], file);  /* public key data */
 763                 }
 764
 765                 fprintf(file, " )");
 766                 if (n < 0)
 767                         fprintf(file, "\t; BAD BASE64");
 768                 fflush(file);
 769                 cp = cp1 + dlen;
 770                 break;
 771
 772         case T_SIG:
 773                 type = _getshort((u_char*)cp);
 774                 cp += INT16SZ;
 775                 fprintf(file, " %s", p_type(type));
 776                 fprintf(file, "\t%d", *cp++);   /* algorithm */
 777                 /* Check label value and print error if wrong. */
 778                 n = *cp++;
 779                 c = dn_count_labels (rrname);
 780                 if (n != c)
 781                         fprintf(file, "\t; LABELS WRONG (%d should be %d)\n\t",
 782                                 n, c);
 783                 /* orig ttl */
 784                 n = _getlong((u_char*)cp);
 785                 if (n != tmpttl)
 786                         fprintf(file, " %u", n);
 787                 cp += INT32SZ;
 788                 /* sig expire */
 789                 fprintf(file, " (\n\t%s",
 790                         __p_secstodate(_getlong((u_char*)cp)));
 791                 cp += INT32SZ;
 792                 /* time signed */
 793                 fprintf(file, " %s", __p_secstodate(_getlong((u_char*)cp)));
 794                 cp += INT32SZ;
 795                 /* sig footprint */
 796                 fprintf(file," %u ", _getshort((u_char*)cp));
 797                 cp += INT16SZ;
 798                 /* signer's name */
 799                 cp = p_fqname(cp, msg, file);
 800                 n = b64_ntop(cp, (cp1 + dlen) - cp,
 801                              base64_key, sizeof base64_key);
 802                 for (c = 0; c < n; c++) {
 803                         if (0 == (c & 0x3F))
 804                                 fprintf (file, "\n\t");
 805                         putc(base64_key[c], file);              /* signature */
 806                 }
 807                 /* Clean up... */
 808                 fprintf(file, " )");
 809                 if (n < 0)
 810                         fprintf(file, "\t; BAD BASE64");
 811                 fflush(file);
 812                 cp = cp1+dlen;
 813                 break;
 814
 815 #ifdef ALLOW_T_UNSPEC
 816         case T_UNSPEC:
 817                 {
 818                         int NumBytes = 8;
 819                         u_char *DataPtr;
 820                         int i;
 821
 822                         if (dlen < NumBytes) NumBytes = dlen;
 823                         fprintf(file, "\tFirst %d bytes of hex data:",
 824                                 NumBytes);
 825                         for (i = 0, DataPtr = cp; i < NumBytes; i++, DataPtr++)
 826                                 fprintf(file, " %x", *DataPtr);
 827                         cp += dlen;
 828                 }
 829                 break;
 830 #endif /* ALLOW_T_UNSPEC */
 831
 832         default:
 833                 fprintf(file, "\t?%d?", type);
 834                 cp += dlen;
 835         }
 836 #if 0
 837         fprintf(file, "\t; dlen=%d, ttl %s\n", dlen, __p_time(tmpttl));
 838 #else
 839         putc('\n', file);
 840 #endif
 841         if (cp - cp1 != dlen) {
 842                 fprintf(file,
 843                         ";; packet size error (found %lu, dlen was %d)\n",
 844                         (unsigned long) (cp - cp1), dlen);
 845                 cp = NULL;
 846         }
 847         return (cp);
 848 }
 849
 850 /*
 851  * Names of RR classes and qclasses.  Classes and qclasses are the same, except
 852  * that C_ANY is a qclass but not a class.  (You can ask for records of class
 853  * C_ANY, but you can't have any records of that class in the database.)
 854  */
 855 const struct res_sym __p_class_syms[] = {
 856         {C_IN,          "IN"},
 857         {C_CHAOS,       "CHAOS"},
 858         {C_HS,          "HS"},
 859         {C_HS,          "HESIOD"},
 860         {C_ANY,         "ANY"},
 861         {C_IN,          (char *)0}
 862 };
 863
 864 /*
 865  * Names of RR types and qtypes.  Types and qtypes are the same, except
 866  * that T_ANY is a qtype but not a type.  (You can ask for records of type
 867  * T_ANY, but you can't have any records of that type in the database.)
 868  */
 869 const struct res_sym __p_type_syms[] = {
 870         {T_A,           "A",            "address"},
 871         {T_NS,          "NS",           "name server"},
 872         {T_MD,          "MD",           "mail destination (deprecated)"},
 873         {T_MF,          "MF",           "mail forwarder (deprecated)"},
 874         {T_CNAME,       "CNAME",        "canonical name"},
 875         {T_SOA,         "SOA",          "start of authority"},
 876         {T_MB,          "MB",           "mailbox"},
 877         {T_MG,          "MG",           "mail group member"},
 878         {T_MR,          "MR",           "mail rename"},
 879         {T_NULL,        "NULL",         "null"},
 880         {T_WKS,         "WKS",          "well-known service (deprecated)"},
 881         {T_PTR,         "PTR",          "domain name pointer"},
 882         {T_HINFO,       "HINFO",        "host information"},
 883         {T_MINFO,       "MINFO",        "mailbox information"},
 884         {T_MX,          "MX",           "mail exchanger"},
 885         {T_TXT,         "TXT",          "text"},
 886         {T_RP,          "RP",           "responsible person"},
 887         {T_AFSDB,       "AFSDB",        "DCE or AFS server"},
 888         {T_X25,         "X25",          "X25 address"},
 889         {T_ISDN,        "ISDN",         "ISDN address"},
 890         {T_RT,          "RT",           "router"},
 891         {T_NSAP,        "NSAP",         "nsap address"},
 892         {T_NSAP_PTR,    "NSAP_PTR",     "domain name pointer"},
 893         {T_SIG,         "SIG",          "signature"},
 894         {T_KEY,         "KEY",          "key"},
 895         {T_PX,          "PX",           "mapping information"},
 896         {T_GPOS,        "GPOS",         "geographical position (withdrawn)"},
 897         {T_AAAA,        "AAAA",         "IPv6 address"},
 898         {T_LOC,         "LOC",          "location"},
 899         {T_NXT,         "NXT",          "next valid name (unimplemented)"},
 900         {T_EID,         "EID",          "endpoint identifier (unimplemented)"},
 901         {T_NIMLOC,      "NIMLOC",       "NIMROD locator (unimplemented)"},
 902         {T_SRV,         "SRV",          "server selection"},
 903         {T_ATMA,        "ATMA",         "ATM address (unimplemented)"},
 904         {T_IXFR,        "IXFR",         "incremental zone transfer"},
 905         {T_AXFR,        "AXFR",         "zone transfer"},
 906         {T_MAILB,       "MAILB",        "mailbox-related data (deprecated)"},
 907         {T_MAILA,       "MAILA",        "mail agent (deprecated)"},
 908         {T_UINFO,       "UINFO",        "user information (nonstandard)"},
 909         {T_UID,         "UID",          "user ID (nonstandard)"},
 910         {T_GID,         "GID",          "group ID (nonstandard)"},
 911 #ifdef ALLOW_T_UNSPEC
 912         {T_UNSPEC,      "UNSPEC",       "unspecified data (nonstandard)"},
 913 #endif /* ALLOW_T_UNSPEC */
 914         {T_ANY,         "ANY",          "\"any\""},
 915         {0,             NULL,           NULL}
 916 };
 917
 918 int
 919 __sym_ston(syms, name, success)
 920         const struct res_sym *syms;
 921         char *name;
 922         int *success;
 923 {
 924 #ifdef _LIBC
 925         /* Changed to prevent warning. --drepper@gnu  */
 926         for (; syms->name != 0; syms++) {
 927 #else
 928         for (NULL; syms->name != 0; syms++) {
 929 #endif
 930                 if (strcasecmp (name, syms->name) == 0) {
 931                         if (success)
 932                                 *success = 1;
 933                         return (syms->number);
 934                 }
 935         }
 936         if (success)
 937                 *success = 0;
 938         return (syms->number);          /* The default value. */
 939 }
 940
 941 const char *
 942 __sym_ntos(syms, number, success)
 943         const struct res_sym *syms;
 944         int number;
 945         int *success;
 946 {
 947         static char unname[20];
 948
 949 #ifdef _LIBC
 950         /* Changed to prevent warning. --drepper@gnu  */
 951         for (; syms->name != 0; syms++) {
 952 #else
 953         for (NULL; syms->name != 0; syms++) {
 954 #endif
 955                 if (number == syms->number) {
 956                         if (success)
 957                                 *success = 1;
 958                         return (syms->name);
 959                 }
 960         }
 961
 962         sprintf (unname, "%d", number);
 963         if (success)
 964                 *success = 0;
 965         return (unname);
 966 }
 967
 968
 969 const char *
 970 __sym_ntop(syms, number, success)
 971         const struct res_sym *syms;
 972         int number;
 973         int *success;
 974 {
 975         static char unname[20];
 976
 977 #ifdef _LIBC
 978         /* Changed to prevent warning. --drepper@gnu  */
 979         for (; syms->name != 0; syms++) {
 980 #else
 981         for (NULL; syms->name != 0; syms++) {
 982 #endif
 983                 if (number == syms->number) {
 984                         if (success)
 985                                 *success = 1;
 986                         return (syms->humanname);
 987                 }
 988         }
 989         sprintf(unname, "%d", number);
 990         if (success)
 991                 *success = 0;
 992         return (unname);
 993 }
 994
 995 /*
 996  * Return a string for the type
 997  */
 998 const char *
 999 __p_type(type)
1000         int type;
1001 {
1002         return (__sym_ntos (__p_type_syms, type, (int *)0));
1003 }
1004
1005 /*
1006  * Return a mnemonic for class
1007  */
1008 const char *
1009 __p_class(class)
1010         int class;
1011 {
1012         return (__sym_ntos (__p_class_syms, class, (int *)0));
1013 }
1014
1015 /*
1016  * Return a mnemonic for an option
1017  */
1018 const char *
1019 __p_option(option)
1020         u_long option;
1021 {
1022         static char nbuf[40];
1023
1024         switch (option) {
1025         case RES_INIT:          return "init";
1026         case RES_DEBUG:         return "debug";
1027         case RES_AAONLY:        return "aaonly(unimpl)";
1028         case RES_USEVC:         return "usevc";
1029         case RES_PRIMARY:       return "primry(unimpl)";
1030         case RES_IGNTC:         return "igntc";
1031         case RES_RECURSE:       return "recurs";
1032         case RES_DEFNAMES:      return "defnam";
1033         case RES_STAYOPEN:      return "styopn";
1034         case RES_DNSRCH:        return "dnsrch";
1035         case RES_INSECURE1:     return "insecure1";
1036         case RES_INSECURE2:     return "insecure2";
1037         default:                sprintf(nbuf, "?0x%lx?", (u_long)option);
1038                                 return (nbuf);
1039         }
1040 }
1041
1042 /*
1043  * Return a mnemonic for a time to live
1044  */
1045 const char *
1046 p_time(value)
1047         u_int32_t value;
1048 {
1049         static char nbuf[60];
1050         int secs, mins, hours, days;
1051         register char *p;
1052
1053         if (value == 0) {
1054                 strcpy(nbuf, "0 secs");
1055                 return (nbuf);
1056         }
1057
1058         secs = value % 60;
1059         value /= 60;
1060         mins = value % 60;
1061         value /= 60;
1062         hours = value % 24;
1063         value /= 24;
1064         days = value;
1065         value = 0;
1066
1067 #define PLURALIZE(x)    x, (x == 1) ? "" : "s"
1068         p = nbuf;
1069         if (days) {
1070                 (void)sprintf(p, "%d day%s", PLURALIZE(days));
1071                 while (*++p);
1072         }
1073         if (hours) {
1074                 if (days)
1075                         *p++ = ' ';
1076                 (void)sprintf(p, "%d hour%s", PLURALIZE(hours));
1077                 while (*++p);
1078         }
1079         if (mins) {
1080                 if (days || hours)
1081                         *p++ = ' ';
1082                 (void)sprintf(p, "%d min%s", PLURALIZE(mins));
1083                 while (*++p);
1084         }
1085         if (secs || ! (days || hours || mins)) {
1086                 if (days || hours || mins)
1087                         *p++ = ' ';
1088                 (void)sprintf(p, "%d sec%s", PLURALIZE(secs));
1089         }
1090         return (nbuf);
1091 }
1092
1093 /*
1094  * routines to convert between on-the-wire RR format and zone file format.
1095  * Does not contain conversion to/from decimal degrees; divide or multiply
1096  * by 60*60*1000 for that.
1097  */
1098
1099 static unsigned int poweroften[10] = {1, 10, 100, 1000, 10000, 100000,
1100                                       1000000,10000000,100000000,1000000000};
1101
1102 /* takes an XeY precision/size value, returns a string representation. */
1103 static const char *
1104 precsize_ntoa(prec)
1105         u_int8_t prec;
1106 {
1107         static char retbuf[sizeof "90000000.00"];
1108         unsigned long val;
1109         int mantissa, exponent;
1110
1111         mantissa = (int)((prec >> 4) & 0x0f) % 10;
1112         exponent = (int)((prec >> 0) & 0x0f) % 10;
1113
1114         val = mantissa * poweroften[exponent];
1115
1116         (void) sprintf(retbuf, "%ld.%.2ld", val/100, val%100);
1117         return (retbuf);
1118 }
1119
1120 /* converts ascii size/precision X * 10**Y(cm) to 0xXY.  moves pointer. */
1121 static u_int8_t
1122 precsize_aton(strptr)
1123         char **strptr;
1124 {
1125         unsigned int mval = 0, cmval = 0;
1126         u_int8_t retval = 0;
1127         register char *cp;
1128         register int exponent;
1129         register int mantissa;
1130
1131         cp = *strptr;
1132
1133         while (isdigit(*cp))
1134                 mval = mval * 10 + (*cp++ - '0');
1135
1136         if (*cp == '.') {               /* centimeters */
1137                 cp++;
1138                 if (isdigit(*cp)) {
1139                         cmval = (*cp++ - '0') * 10;
1140                         if (isdigit(*cp)) {
1141                                 cmval += (*cp++ - '0');
1142                         }
1143                 }
1144         }
1145         cmval = (mval * 100) + cmval;
1146
1147         for (exponent = 0; exponent < 9; exponent++)
1148                 if (cmval < poweroften[exponent+1])
1149                         break;
1150
1151         mantissa = cmval / poweroften[exponent];
1152         if (mantissa > 9)
1153                 mantissa = 9;
1154
1155         retval = (mantissa << 4) | exponent;
1156
1157         *strptr = cp;
1158
1159         return (retval);
1160 }
1161
1162 /* converts ascii lat/lon to unsigned encoded 32-bit number.  moves pointer. */
1163 static u_int32_t
1164 latlon2ul(latlonstrptr,which)
1165         char **latlonstrptr;
1166         int *which;
1167 {
1168         register char *cp;
1169         u_int32_t retval;
1170         int deg = 0, min = 0, secs = 0, secsfrac = 0;
1171
1172         cp = *latlonstrptr;
1173
1174         while (isdigit(*cp))
1175                 deg = deg * 10 + (*cp++ - '0');
1176
1177         while (isspace(*cp))
1178                 cp++;
1179
1180         if (!(isdigit(*cp)))
1181                 goto fndhemi;
1182
1183         while (isdigit(*cp))
1184                 min = min * 10 + (*cp++ - '0');
1185
1186         while (isspace(*cp))
1187                 cp++;
1188
1189         if (!(isdigit(*cp)))
1190                 goto fndhemi;
1191
1192         while (isdigit(*cp))
1193                 secs = secs * 10 + (*cp++ - '0');
1194
1195         if (*cp == '.') {               /* decimal seconds */
1196                 cp++;
1197                 if (isdigit(*cp)) {
1198                         secsfrac = (*cp++ - '0') * 100;
1199                         if (isdigit(*cp)) {
1200                                 secsfrac += (*cp++ - '0') * 10;
1201                                 if (isdigit(*cp)) {
1202                                         secsfrac += (*cp++ - '0');
1203                                 }
1204                         }
1205                 }
1206         }
1207
1208         while (!isspace(*cp))   /* if any trailing garbage */
1209                 cp++;
1210
1211         while (isspace(*cp))
1212                 cp++;
1213
1214  fndhemi:
1215         switch (*cp) {
1216         case 'N': case 'n':
1217         case 'E': case 'e':
1218                 retval = ((unsigned)1<<31)
1219                         + (((((deg * 60) + min) * 60) + secs) * 1000)
1220                         + secsfrac;
1221                 break;
1222         case 'S': case 's':
1223         case 'W': case 'w':
1224                 retval = ((unsigned)1<<31)
1225                         - (((((deg * 60) + min) * 60) + secs) * 1000)
1226                         - secsfrac;
1227                 break;
1228         default:
1229                 retval = 0;     /* invalid value -- indicates error */
1230                 break;
1231         }
1232
1233         switch (*cp) {
1234         case 'N': case 'n':
1235         case 'S': case 's':
1236                 *which = 1;     /* latitude */
1237                 break;
1238         case 'E': case 'e':
1239         case 'W': case 'w':
1240                 *which = 2;     /* longitude */
1241                 break;
1242         default:
1243                 *which = 0;     /* error */
1244                 break;
1245         }
1246
1247         cp++;                   /* skip the hemisphere */
1248
1249         while (!isspace(*cp))   /* if any trailing garbage */
1250                 cp++;
1251
1252         while (isspace(*cp))    /* move to next field */
1253                 cp++;
1254
1255         *latlonstrptr = cp;
1256
1257         return (retval);
1258 }
1259
1260 /* converts a zone file representation in a string to an RDATA on-the-wire
1261  * representation. */
1262 int
1263 loc_aton(ascii, binary)
1264         const char *ascii;
1265         u_char *binary;
1266 {
1267         const char *cp, *maxcp;
1268         u_char *bcp;
1269
1270         u_int32_t latit = 0, longit = 0, alt = 0;
1271         u_int32_t lltemp1 = 0, lltemp2 = 0;
1272         int altmeters = 0, altfrac = 0, altsign = 1;
1273         u_int8_t hp = 0x16;     /* default = 1e6 cm = 10000.00m = 10km */
1274         u_int8_t vp = 0x13;     /* default = 1e3 cm = 10.00m */
1275         u_int8_t siz = 0x12;    /* default = 1e2 cm = 1.00m */
1276         int which1 = 0, which2 = 0;
1277
1278         cp = ascii;
1279         maxcp = cp + strlen(ascii);
1280
1281         lltemp1 = latlon2ul(&cp, &which1);
1282
1283         lltemp2 = latlon2ul(&cp, &which2);
1284
1285         switch (which1 + which2) {
1286         case 3:                 /* 1 + 2, the only valid combination */
1287                 if ((which1 == 1) && (which2 == 2)) { /* normal case */
1288                         latit = lltemp1;
1289                         longit = lltemp2;
1290                 } else if ((which1 == 2) && (which2 == 1)) { /* reversed */
1291                         longit = lltemp1;
1292                         latit = lltemp2;
1293                 } else {        /* some kind of brokenness */
1294                         return (0);
1295                 }
1296                 break;
1297         default:                /* we didn't get one of each */
1298                 return (0);
1299         }
1300
1301         /* altitude */
1302         if (*cp == '-') {
1303                 altsign = -1;
1304                 cp++;
1305         }
1306
1307         if (*cp == '+')
1308                 cp++;
1309
1310         while (isdigit(*cp))
1311                 altmeters = altmeters * 10 + (*cp++ - '0');
1312
1313         if (*cp == '.') {               /* decimal meters */
1314                 cp++;
1315                 if (isdigit(*cp)) {
1316                         altfrac = (*cp++ - '0') * 10;
1317                         if (isdigit(*cp)) {
1318                                 altfrac += (*cp++ - '0');
1319                         }
1320                 }
1321         }
1322
1323         alt = (10000000 + (altsign * (altmeters * 100 + altfrac)));
1324
1325         while (!isspace(*cp) && (cp < maxcp)) /* if trailing garbage or m */
1326                 cp++;
1327
1328         while (isspace(*cp) && (cp < maxcp))
1329                 cp++;
1330
1331         if (cp >= maxcp)
1332                 goto defaults;
1333
1334         siz = precsize_aton(&cp);
1335
1336         while (!isspace(*cp) && (cp < maxcp))   /* if trailing garbage or m */
1337                 cp++;
1338
1339         while (isspace(*cp) && (cp < maxcp))
1340                 cp++;
1341
1342         if (cp >= maxcp)
1343                 goto defaults;
1344
1345         hp = precsize_aton(&cp);
1346
1347         while (!isspace(*cp) && (cp < maxcp))   /* if trailing garbage or m */
1348                 cp++;
1349
1350         while (isspace(*cp) && (cp < maxcp))
1351                 cp++;
1352
1353         if (cp >= maxcp)
1354                 goto defaults;
1355
1356         vp = precsize_aton(&cp);
1357
1358  defaults:
1359
1360         bcp = binary;
1361         *bcp++ = (u_int8_t) 0;  /* version byte */
1362         *bcp++ = siz;
1363         *bcp++ = hp;
1364         *bcp++ = vp;
1365         PUTLONG(latit,bcp);
1366         PUTLONG(longit,bcp);
1367         PUTLONG(alt,bcp);
1368
1369         return (16);            /* size of RR in octets */
1370 }
1371
1372 /* takes an on-the-wire LOC RR and formats it in a human readable format. */
1373 const char *
1374 loc_ntoa(binary, ascii)
1375         const u_char *binary;
1376         char *ascii;
1377 {
1378         static char *error = "?";
1379         register const u_char *cp = binary;
1380
1381         int latdeg, latmin, latsec, latsecfrac;
1382         int longdeg, longmin, longsec, longsecfrac;
1383         char northsouth, eastwest;
1384         int altmeters, altfrac, altsign;
1385
1386         const int referencealt = 100000 * 100;
1387
1388         int32_t latval, longval, altval;
1389         u_int32_t templ;
1390         u_int8_t sizeval, hpval, vpval, versionval;
1391
1392         char *sizestr, *hpstr, *vpstr;
1393
1394         versionval = *cp++;
1395
1396         if (versionval) {
1397                 sprintf(ascii, "; error: unknown LOC RR version");
1398                 return (ascii);
1399         }
1400
1401         sizeval = *cp++;
1402
1403         hpval = *cp++;
1404         vpval = *cp++;
1405
1406         GETLONG(templ, cp);
1407         latval = (templ - ((unsigned)1<<31));
1408
1409         GETLONG(templ, cp);
1410         longval = (templ - ((unsigned)1<<31));
1411
1412         GETLONG(templ, cp);
1413         if (templ < referencealt) { /* below WGS 84 spheroid */
1414                 altval = referencealt - templ;
1415                 altsign = -1;
1416         } else {
1417                 altval = templ - referencealt;
1418                 altsign = 1;
1419         }
1420
1421         if (latval < 0) {
1422                 northsouth = 'S';
1423                 latval = -latval;
1424         } else
1425                 northsouth = 'N';
1426
1427         latsecfrac = latval % 1000;
1428         latval = latval / 1000;
1429         latsec = latval % 60;
1430         latval = latval / 60;
1431         latmin = latval % 60;
1432         latval = latval / 60;
1433         latdeg = latval;
1434
1435         if (longval < 0) {
1436                 eastwest = 'W';
1437                 longval = -longval;
1438         } else
1439                 eastwest = 'E';
1440
1441         longsecfrac = longval % 1000;
1442         longval = longval / 1000;
1443         longsec = longval % 60;
1444         longval = longval / 60;
1445         longmin = longval % 60;
1446         longval = longval / 60;
1447         longdeg = longval;
1448
1449         altfrac = altval % 100;
1450         altmeters = (altval / 100) * altsign;
1451
1452         if ((sizestr = strdup(precsize_ntoa(sizeval))) == NULL)
1453                 sizestr = error;
1454         if ((hpstr = strdup(precsize_ntoa(hpval))) == NULL)
1455                 hpstr = error;
1456         if ((vpstr = strdup(precsize_ntoa(vpval))) == NULL)
1457                 vpstr = error;
1458
1459         sprintf(ascii,
1460               "%d %.2d %.2d.%.3d %c %d %.2d %.2d.%.3d %c %d.%.2dm %sm %sm %sm",
1461                 latdeg, latmin, latsec, latsecfrac, northsouth,
1462                 longdeg, longmin, longsec, longsecfrac, eastwest,
1463                 altmeters, altfrac, sizestr, hpstr, vpstr);
1464
1465         if (sizestr != error)
1466                 free(sizestr);
1467         if (hpstr != error)
1468                 free(hpstr);
1469         if (vpstr != error)
1470                 free(vpstr);
1471
1472         return (ascii);
1473 }
1474
1475
1476 /* Return the number of DNS hierarchy levels in the name. */
1477 int
1478 __dn_count_labels(name)
1479         char *name;
1480 {
1481         int i, len, count;
1482
1483         len = strlen(name);
1484
1485         for(i = 0, count = 0; i < len; i++) {
1486                 if (name[i] == '.')
1487                         count++;
1488         }
1489
1490         /* don't count initial wildcard */
1491         if (name[0] == '*')
1492                 if (count)
1493                         count--;
1494
1495         /* don't count the null label for root. */
1496         /* if terminating '.' not found, must adjust */
1497         /* count to include last label */
1498         if (len > 0 && name[len-1] != '.')
1499                 count++;
1500         return (count);
1501 }
1502
1503
1504 /*
1505  * Make dates expressed in seconds-since-Jan-1-1970 easy to read.
1506  * SIG records are required to be printed like this, by the Secure DNS RFC.
1507  */
1508 char *
1509 __p_secstodate (secs)
1510         unsigned long secs;
1511 {
1512         static char output[15];         /* YYYYMMDDHHMMSS and null */
1513         time_t clock = secs;
1514         struct tm time;
1515
1516         __gmtime_r(&clock, &time);
1517         time.tm_year += 1900;
1518         time.tm_mon += 1;
1519         sprintf(output, "%04d%02d%02d%02d%02d%02d",
1520                 time.tm_year, time.tm_mon, time.tm_mday,
1521                 time.tm_hour, time.tm_min, time.tm_sec);
1522         return (output);
1523 }