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\n", 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\n", loc_ntoa(cp, t));
 679                 cp += dlen;
 680                 break;
 681         }
 682
 683         case T_MINFO:
 684         case T_RP:
 685                 putc('\t', file);
 686                 if ((cp = p_fqname(cp, msg, file)) == NULL)
 687                         return (NULL);
 688                 putc(' ', file);
 689                 if ((cp = p_fqname(cp, msg, file)) == NULL)
 690                         return (NULL);
 691                 break;
 692
 693         case T_UINFO:
 694                 putc('\t', file);
 695                 fputs((char *)cp, file);
 696                 cp += dlen;
 697                 break;
 698
 699         case T_UID:
 700         case T_GID:
 701                 if (dlen == 4) {
 702                         fprintf(file, "\t%u", _getlong((u_char*)cp));
 703                         cp += INT32SZ;
 704                 }
 705                 break;
 706
 707         case T_WKS:
 708                 if (dlen < INT32SZ + 1)
 709                         break;
 710                 bcopy(cp, (char *)&inaddr, INADDRSZ);
 711                 cp += INT32SZ;
 712                 fprintf(file, "\t%s %s ( ",
 713                         inet_ntoa(inaddr),
 714                         deproto((int) *cp));
 715                 cp += sizeof (u_char);
 716                 n = 0;
 717                 lcnt = 0;
 718                 while (cp < cp1 + dlen) {
 719                         c = *cp++;
 720                         do {
 721                                 if (c & 0200) {
 722                                         if (lcnt == 0) {
 723                                                 fputs("\n\t\t\t", file);
 724                                                 lcnt = 5;
 725                                         }
 726                                         fputs(dewks(n), file);
 727                                         putc(' ', file);
 728                                         lcnt--;
 729                                 }
 730                                 c <<= 1;
 731                         } while (++n & 07);
 732                 }
 733                 putc(')', file);
 734                 break;
 735
 736         case T_KEY:
 737                 putc('\t', file);
 738                 keyflags = _getshort(cp);
 739                 cp += 2;
 740                 fprintf(file,"0x%04x", keyflags );      /* flags */
 741                 fprintf(file," %u", *cp++);     /* protocol */
 742                 fprintf(file," %u (", *cp++);   /* algorithm */
 743
 744                 n = b64_ntop(cp, (cp1 + dlen) - cp,
 745                              base64_key, sizeof base64_key);
 746                 for (c = 0; c < n; ++c) {
 747                         if (0 == (c & 0x3F))
 748                                 fprintf(file, "\n\t");
 749                         putc(base64_key[c], file);  /* public key data */
 750                 }
 751
 752                 fprintf(file, " )");
 753                 if (n < 0)
 754                         fprintf(file, "\t; BAD BASE64");
 755                 fflush(file);
 756                 cp = cp1 + dlen;
 757                 break;
 758
 759         case T_SIG:
 760                 type = _getshort((u_char*)cp);
 761                 cp += INT16SZ;
 762                 fprintf(file, " %s", p_type(type));
 763                 fprintf(file, "\t%d", *cp++);   /* algorithm */
 764                 /* Check label value and print error if wrong. */
 765                 n = *cp++;
 766                 c = dn_count_labels (rrname);
 767                 if (n != c)
 768                         fprintf(file, "\t; LABELS WRONG (%d should be %d)\n\t",
 769                                 n, c);
 770                 /* orig ttl */
 771                 n = _getlong((u_char*)cp);
 772                 if (n != tmpttl)
 773                         fprintf(file, " %u", n);
 774                 cp += INT32SZ;
 775                 /* sig expire */
 776                 fprintf(file, " (\n\t%s",
 777                         __p_secstodate(_getlong((u_char*)cp)));
 778                 cp += INT32SZ;
 779                 /* time signed */
 780                 fprintf(file, " %s", __p_secstodate(_getlong((u_char*)cp)));
 781                 cp += INT32SZ;
 782                 /* sig footprint */
 783                 fprintf(file," %u ", _getshort((u_char*)cp));
 784                 cp += INT16SZ;
 785                 /* signer's name */
 786                 cp = p_fqname(cp, msg, file);
 787                 n = b64_ntop(cp, (cp1 + dlen) - cp,
 788                              base64_key, sizeof base64_key);
 789                 for (c = 0; c < n; c++) {
 790                         if (0 == (c & 0x3F))
 791                                 fprintf (file, "\n\t");
 792                         putc(base64_key[c], file);              /* signature */
 793                 }
 794                 /* Clean up... */
 795                 fprintf(file, " )");
 796                 if (n < 0)
 797                         fprintf(file, "\t; BAD BASE64");
 798                 fflush(file);
 799                 cp = cp1+dlen;
 800                 break;
 801
 802 #ifdef ALLOW_T_UNSPEC
 803         case T_UNSPEC:
 804                 {
 805                         int NumBytes = 8;
 806                         u_char *DataPtr;
 807                         int i;
 808
 809                         if (dlen < NumBytes) NumBytes = dlen;
 810                         fprintf(file, "\tFirst %d bytes of hex data:",
 811                                 NumBytes);
 812                         for (i = 0, DataPtr = cp; i < NumBytes; i++, DataPtr++)
 813                                 fprintf(file, " %x", *DataPtr);
 814                         cp += dlen;
 815                 }
 816                 break;
 817 #endif /* ALLOW_T_UNSPEC */
 818
 819         default:
 820                 fprintf(file, "\t?%d?", type);
 821                 cp += dlen;
 822         }
 823 #if 0
 824         fprintf(file, "\t; dlen=%d, ttl %s\n", dlen, __p_time(tmpttl));
 825 #else
 826         putc('\n', file);
 827 #endif
 828         if (cp - cp1 != dlen) {
 829                 fprintf(file,
 830                         ";; packet size error (found %lu, dlen was %d)\n",
 831                         (unsigned long) (cp - cp1), dlen);
 832                 cp = NULL;
 833         }
 834         return (cp);
 835 }
 836
 837 /*
 838  * Names of RR classes and qclasses.  Classes and qclasses are the same, except
 839  * that C_ANY is a qclass but not a class.  (You can ask for records of class
 840  * C_ANY, but you can't have any records of that class in the database.)
 841  */
 842 const struct res_sym __p_class_syms[] = {
 843         {C_IN,          "IN"},
 844         {C_CHAOS,       "CHAOS"},
 845         {C_HS,          "HS"},
 846         {C_HS,          "HESIOD"},
 847         {C_ANY,         "ANY"},
 848         {C_IN,          (char *)0}
 849 };
 850
 851 /*
 852  * Names of RR types and qtypes.  Types and qtypes are the same, except
 853  * that T_ANY is a qtype but not a type.  (You can ask for records of type
 854  * T_ANY, but you can't have any records of that type in the database.)
 855  */
 856 const struct res_sym __p_type_syms[] = {
 857         {T_A,           "A",            "address"},
 858         {T_NS,          "NS",           "name server"},
 859         {T_CNAME,       "CNAME",        "canonical name"},
 860         {T_SOA,         "SOA",          "start of authority"},
 861         {T_MB,          "MB",           "mailbox"},
 862         {T_MG,          "MG",           "mail group member"},
 863         {T_MR,          "MR",           "mail rename"},
 864         {T_NULL,        "NULL",         "null"},
 865         {T_WKS,         "WKS",          "well-known service"},
 866         {T_PTR,         "PTR",          "domain name pointer"},
 867         {T_HINFO,       "HINFO",        "host information"},
 868         {T_MINFO,       "MINFO",        "mailbox information"},
 869         {T_MX,          "MX",           "mail exchanger"},
 870         {T_TXT,         "TXT",          "text"},
 871         {T_RP,          "RP",           "responsible person"},
 872         {T_AFSDB,       "AFSDB",        "DCE or AFS server"},
 873         {T_X25,         "X25",          "X25 address"},
 874         {T_ISDN,        "ISDN",         "ISDN address"},
 875         {T_RT,          "RT",           "router"},
 876         {T_NSAP,        "NSAP",         "nsap address"},
 877         {T_NSAP_PTR,    "NSAP_PTR",     "domain name pointer"},
 878         {T_SIG,         "SIG",          "signature"},
 879         {T_KEY,         "KEY",          "key"},
 880         {T_NXT,         "NXT",          "next valid name"},
 881         {T_PX,          "PX",           "mapping information"},
 882         {T_GPOS,        "GPOS",         "geographical position"},
 883         {T_AAAA,        "AAAA",         "IPv6 address"},
 884         {T_LOC,         "LOC",          "location"},
 885         {T_AXFR,        "AXFR",         "zone transfer"},
 886         {T_MAILB,       "MAILB",        "mailbox-related data"},
 887         {T_MAILA,       "MAILA",        "mail agent"},
 888         {T_UINFO,       "UINFO",        "user information"},
 889         {T_UID,         "UID",          "user ID"},
 890         {T_GID,         "GID",          "group ID"},
 891 #ifdef ALLOW_T_UNSPEC
 892         {T_UNSPEC,      "UNSPEC",       "unspecified data"},
 893 #endif /* ALLOW_T_UNSPEC */
 894         {T_ANY,         "ANY",          "\"any\""},
 895         {0,             (char *)0,      (char *)0}
 896 };
 897
 898 int
 899 __sym_ston(syms, name, success)
 900         const struct res_sym *syms;
 901         char *name;
 902         int *success;
 903 {
 904 #ifdef _LIBC
 905         /* Changed to prevent warning. --drepper@gnu  */
 906         for (; syms->name != 0; syms++) {
 907 #else
 908         for (NULL; syms->name != 0; syms++) {
 909 #endif
 910                 if (strcasecmp (name, syms->name) == 0) {
 911                         if (success)
 912                                 *success = 1;
 913                         return (syms->number);
 914                 }
 915         }
 916         if (success)
 917                 *success = 0;
 918         return (syms->number);          /* The default value. */
 919 }
 920
 921 const char *
 922 __sym_ntos(syms, number, success)
 923         const struct res_sym *syms;
 924         int number;
 925         int *success;
 926 {
 927         static char unname[20];
 928
 929 #ifdef _LIBC
 930         /* Changed to prevent warning. --drepper@gnu  */
 931         for (; syms->name != 0; syms++) {
 932 #else
 933         for (NULL; syms->name != 0; syms++) {
 934 #endif
 935                 if (number == syms->number) {
 936                         if (success)
 937                                 *success = 1;
 938                         return (syms->name);
 939                 }
 940         }
 941
 942         sprintf (unname, "%d", number);
 943         if (success)
 944                 *success = 0;
 945         return (unname);
 946 }
 947
 948
 949 const char *
 950 __sym_ntop(syms, number, success)
 951         const struct res_sym *syms;
 952         int number;
 953         int *success;
 954 {
 955         static char unname[20];
 956
 957 #ifdef _LIBC
 958         /* Changed to prevent warning. --drepper@gnu  */
 959         for (; syms->name != 0; syms++) {
 960 #else
 961         for (NULL; syms->name != 0; syms++) {
 962 #endif
 963                 if (number == syms->number) {
 964                         if (success)
 965                                 *success = 1;
 966                         return (syms->humanname);
 967                 }
 968         }
 969         sprintf(unname, "%d", number);
 970         if (success)
 971                 *success = 0;
 972         return (unname);
 973 }
 974
 975 /*
 976  * Return a string for the type
 977  */
 978 const char *
 979 __p_type(type)
 980         int type;
 981 {
 982         return (__sym_ntos (__p_type_syms, type, (int *)0));
 983 }
 984
 985 /*
 986  * Return a mnemonic for class
 987  */
 988 const char *
 989 __p_class(class)
 990         int class;
 991 {
 992         return (__sym_ntos (__p_class_syms, class, (int *)0));
 993 }
 994
 995 /*
 996  * Return a mnemonic for an option
 997  */
 998 const char *
 999 __p_option(option)
1000         u_long option;
1001 {
1002         static char nbuf[40];
1003
1004         switch (option) {
1005         case RES_INIT:          return "init";
1006         case RES_DEBUG:         return "debug";
1007         case RES_AAONLY:        return "aaonly(unimpl)";
1008         case RES_USEVC:         return "usevc";
1009         case RES_PRIMARY:       return "primry(unimpl)";
1010         case RES_IGNTC:         return "igntc";
1011         case RES_RECURSE:       return "recurs";
1012         case RES_DEFNAMES:      return "defnam";
1013         case RES_STAYOPEN:      return "styopn";
1014         case RES_DNSRCH:        return "dnsrch";
1015         case RES_INSECURE1:     return "insecure1";
1016         case RES_INSECURE2:     return "insecure2";
1017         default:                sprintf(nbuf, "?0x%lx?", (u_long)option);
1018                                 return (nbuf);
1019         }
1020 }
1021
1022 /*
1023  * Return a mnemonic for a time to live
1024  */
1025 char *
1026 __p_time(value)
1027         u_int32_t value;
1028 {
1029         static char nbuf[40];
1030         int secs, mins, hours, days;
1031         register char *p;
1032
1033         if (value == 0) {
1034                 strcpy(nbuf, "0 secs");
1035                 return (nbuf);
1036         }
1037
1038         secs = value % 60;
1039         value /= 60;
1040         mins = value % 60;
1041         value /= 60;
1042         hours = value % 24;
1043         value /= 24;
1044         days = value;
1045         value = 0;
1046
1047 #define PLURALIZE(x)    x, (x == 1) ? "" : "s"
1048         p = nbuf;
1049         if (days) {
1050                 (void)sprintf(p, "%d day%s", PLURALIZE(days));
1051                 while (*++p);
1052         }
1053         if (hours) {
1054                 if (days)
1055                         *p++ = ' ';
1056                 (void)sprintf(p, "%d hour%s", PLURALIZE(hours));
1057                 while (*++p);
1058         }
1059         if (mins) {
1060                 if (days || hours)
1061                         *p++ = ' ';
1062                 (void)sprintf(p, "%d min%s", PLURALIZE(mins));
1063                 while (*++p);
1064         }
1065         if (secs || ! (days || hours || mins)) {
1066                 if (days || hours || mins)
1067                         *p++ = ' ';
1068                 (void)sprintf(p, "%d sec%s", PLURALIZE(secs));
1069         }
1070         return (nbuf);
1071 }
1072
1073 /*
1074  * routines to convert between on-the-wire RR format and zone file format.
1075  * Does not contain conversion to/from decimal degrees; divide or multiply
1076  * by 60*60*1000 for that.
1077  */
1078
1079 static unsigned int poweroften[10] = {1, 10, 100, 1000, 10000, 100000,
1080                                       1000000,10000000,100000000,1000000000};
1081
1082 /* takes an XeY precision/size value, returns a string representation. */
1083 static const char *
1084 precsize_ntoa(prec)
1085         u_int8_t prec;
1086 {
1087         static char retbuf[sizeof "90000000.00"];
1088         unsigned long val;
1089         int mantissa, exponent;
1090
1091         mantissa = (int)((prec >> 4) & 0x0f) % 10;
1092         exponent = (int)((prec >> 0) & 0x0f) % 10;
1093
1094         val = mantissa * poweroften[exponent];
1095
1096         (void) sprintf(retbuf, "%ld.%.2ld", val/100, val%100);
1097         return (retbuf);
1098 }
1099
1100 /* converts ascii size/precision X * 10**Y(cm) to 0xXY.  moves pointer. */
1101 static u_int8_t
1102 precsize_aton(strptr)
1103         char **strptr;
1104 {
1105         unsigned int mval = 0, cmval = 0;
1106         u_int8_t retval = 0;
1107         register char *cp;
1108         register int exponent;
1109         register int mantissa;
1110
1111         cp = *strptr;
1112
1113         while (isdigit(*cp))
1114                 mval = mval * 10 + (*cp++ - '0');
1115
1116         if (*cp == '.') {               /* centimeters */
1117                 cp++;
1118                 if (isdigit(*cp)) {
1119                         cmval = (*cp++ - '0') * 10;
1120                         if (isdigit(*cp)) {
1121                                 cmval += (*cp++ - '0');
1122                         }
1123                 }
1124         }
1125         cmval = (mval * 100) + cmval;
1126
1127         for (exponent = 0; exponent < 9; exponent++)
1128                 if (cmval < poweroften[exponent+1])
1129                         break;
1130
1131         mantissa = cmval / poweroften[exponent];
1132         if (mantissa > 9)
1133                 mantissa = 9;
1134
1135         retval = (mantissa << 4) | exponent;
1136
1137         *strptr = cp;
1138
1139         return (retval);
1140 }
1141
1142 /* converts ascii lat/lon to unsigned encoded 32-bit number.  moves pointer. */
1143 static u_int32_t
1144 latlon2ul(latlonstrptr,which)
1145         char **latlonstrptr;
1146         int *which;
1147 {
1148         register char *cp;
1149         u_int32_t retval;
1150         int deg = 0, min = 0, secs = 0, secsfrac = 0;
1151
1152         cp = *latlonstrptr;
1153
1154         while (isdigit(*cp))
1155                 deg = deg * 10 + (*cp++ - '0');
1156
1157         while (isspace(*cp))
1158                 cp++;
1159
1160         if (!(isdigit(*cp)))
1161                 goto fndhemi;
1162
1163         while (isdigit(*cp))
1164                 min = min * 10 + (*cp++ - '0');
1165
1166         while (isspace(*cp))
1167                 cp++;
1168
1169         if (!(isdigit(*cp)))
1170                 goto fndhemi;
1171
1172         while (isdigit(*cp))
1173                 secs = secs * 10 + (*cp++ - '0');
1174
1175         if (*cp == '.') {               /* decimal seconds */
1176                 cp++;
1177                 if (isdigit(*cp)) {
1178                         secsfrac = (*cp++ - '0') * 100;
1179                         if (isdigit(*cp)) {
1180                                 secsfrac += (*cp++ - '0') * 10;
1181                                 if (isdigit(*cp)) {
1182                                         secsfrac += (*cp++ - '0');
1183                                 }
1184                         }
1185                 }
1186         }
1187
1188         while (!isspace(*cp))   /* if any trailing garbage */
1189                 cp++;
1190
1191         while (isspace(*cp))
1192                 cp++;
1193
1194  fndhemi:
1195         switch (*cp) {
1196         case 'N': case 'n':
1197         case 'E': case 'e':
1198                 retval = ((unsigned)1<<31)
1199                         + (((((deg * 60) + min) * 60) + secs) * 1000)
1200                         + secsfrac;
1201                 break;
1202         case 'S': case 's':
1203         case 'W': case 'w':
1204                 retval = ((unsigned)1<<31)
1205                         - (((((deg * 60) + min) * 60) + secs) * 1000)
1206                         - secsfrac;
1207                 break;
1208         default:
1209                 retval = 0;     /* invalid value -- indicates error */
1210                 break;
1211         }
1212
1213         switch (*cp) {
1214         case 'N': case 'n':
1215         case 'S': case 's':
1216                 *which = 1;     /* latitude */
1217                 break;
1218         case 'E': case 'e':
1219         case 'W': case 'w':
1220                 *which = 2;     /* longitude */
1221                 break;
1222         default:
1223                 *which = 0;     /* error */
1224                 break;
1225         }
1226
1227         cp++;                   /* skip the hemisphere */
1228
1229         while (!isspace(*cp))   /* if any trailing garbage */
1230                 cp++;
1231
1232         while (isspace(*cp))    /* move to next field */
1233                 cp++;
1234
1235         *latlonstrptr = cp;
1236
1237         return (retval);
1238 }
1239
1240 /* converts a zone file representation in a string to an RDATA on-the-wire
1241  * representation. */
1242 int
1243 loc_aton(ascii, binary)
1244         const char *ascii;
1245         u_char *binary;
1246 {
1247         const char *cp, *maxcp;
1248         u_char *bcp;
1249
1250         u_int32_t latit = 0, longit = 0, alt = 0;
1251         u_int32_t lltemp1 = 0, lltemp2 = 0;
1252         int altmeters = 0, altfrac = 0, altsign = 1;
1253         u_int8_t hp = 0x16;     /* default = 1e6 cm = 10000.00m = 10km */
1254         u_int8_t vp = 0x13;     /* default = 1e3 cm = 10.00m */
1255         u_int8_t siz = 0x12;    /* default = 1e2 cm = 1.00m */
1256         int which1 = 0, which2 = 0;
1257
1258         cp = ascii;
1259         maxcp = cp + strlen(ascii);
1260
1261         lltemp1 = latlon2ul(&cp, &which1);
1262
1263         lltemp2 = latlon2ul(&cp, &which2);
1264
1265         switch (which1 + which2) {
1266         case 3:                 /* 1 + 2, the only valid combination */
1267                 if ((which1 == 1) && (which2 == 2)) { /* normal case */
1268                         latit = lltemp1;
1269                         longit = lltemp2;
1270                 } else if ((which1 == 2) && (which2 == 1)) { /* reversed */
1271                         longit = lltemp1;
1272                         latit = lltemp2;
1273                 } else {        /* some kind of brokenness */
1274                         return (0);
1275                 }
1276                 break;
1277         default:                /* we didn't get one of each */
1278                 return (0);
1279         }
1280
1281         /* altitude */
1282         if (*cp == '-') {
1283                 altsign = -1;
1284                 cp++;
1285         }
1286
1287         if (*cp == '+')
1288                 cp++;
1289
1290         while (isdigit(*cp))
1291                 altmeters = altmeters * 10 + (*cp++ - '0');
1292
1293         if (*cp == '.') {               /* decimal meters */
1294                 cp++;
1295                 if (isdigit(*cp)) {
1296                         altfrac = (*cp++ - '0') * 10;
1297                         if (isdigit(*cp)) {
1298                                 altfrac += (*cp++ - '0');
1299                         }
1300                 }
1301         }
1302
1303         alt = (10000000 + (altsign * (altmeters * 100 + altfrac)));
1304
1305         while (!isspace(*cp) && (cp < maxcp)) /* if trailing garbage or m */
1306                 cp++;
1307
1308         while (isspace(*cp) && (cp < maxcp))
1309                 cp++;
1310
1311         if (cp >= maxcp)
1312                 goto defaults;
1313
1314         siz = precsize_aton(&cp);
1315
1316         while (!isspace(*cp) && (cp < maxcp))   /* if trailing garbage or m */
1317                 cp++;
1318
1319         while (isspace(*cp) && (cp < maxcp))
1320                 cp++;
1321
1322         if (cp >= maxcp)
1323                 goto defaults;
1324
1325         hp = precsize_aton(&cp);
1326
1327         while (!isspace(*cp) && (cp < maxcp))   /* if trailing garbage or m */
1328                 cp++;
1329
1330         while (isspace(*cp) && (cp < maxcp))
1331                 cp++;
1332
1333         if (cp >= maxcp)
1334                 goto defaults;
1335
1336         vp = precsize_aton(&cp);
1337
1338  defaults:
1339
1340         bcp = binary;
1341         *bcp++ = (u_int8_t) 0;  /* version byte */
1342         *bcp++ = siz;
1343         *bcp++ = hp;
1344         *bcp++ = vp;
1345         PUTLONG(latit,bcp);
1346         PUTLONG(longit,bcp);
1347         PUTLONG(alt,bcp);
1348
1349         return (16);            /* size of RR in octets */
1350 }
1351
1352 /* takes an on-the-wire LOC RR and formats it in a human readable format. */
1353 char *
1354 loc_ntoa(binary, ascii)
1355         const u_char *binary;
1356         char *ascii;
1357 {
1358         static char *error = "?";
1359         register const u_char *cp = binary;
1360
1361         int latdeg, latmin, latsec, latsecfrac;
1362         int longdeg, longmin, longsec, longsecfrac;
1363         char northsouth, eastwest;
1364         int altmeters, altfrac, altsign;
1365
1366         const int referencealt = 100000 * 100;
1367
1368         int32_t latval, longval, altval;
1369         u_int32_t templ;
1370         u_int8_t sizeval, hpval, vpval, versionval;
1371
1372         char *sizestr, *hpstr, *vpstr;
1373
1374         versionval = *cp++;
1375
1376         if (versionval) {
1377                 sprintf(ascii, "; error: unknown LOC RR version");
1378                 return (ascii);
1379         }
1380
1381         sizeval = *cp++;
1382
1383         hpval = *cp++;
1384         vpval = *cp++;
1385
1386         GETLONG(templ, cp);
1387         latval = (templ - ((unsigned)1<<31));
1388
1389         GETLONG(templ, cp);
1390         longval = (templ - ((unsigned)1<<31));
1391
1392         GETLONG(templ, cp);
1393         if (templ < referencealt) { /* below WGS 84 spheroid */
1394                 altval = referencealt - templ;
1395                 altsign = -1;
1396         } else {
1397                 altval = templ - referencealt;
1398                 altsign = 1;
1399         }
1400
1401         if (latval < 0) {
1402                 northsouth = 'S';
1403                 latval = -latval;
1404         } else
1405                 northsouth = 'N';
1406
1407         latsecfrac = latval % 1000;
1408         latval = latval / 1000;
1409         latsec = latval % 60;
1410         latval = latval / 60;
1411         latmin = latval % 60;
1412         latval = latval / 60;
1413         latdeg = latval;
1414
1415         if (longval < 0) {
1416                 eastwest = 'W';
1417                 longval = -longval;
1418         } else
1419                 eastwest = 'E';
1420
1421         longsecfrac = longval % 1000;
1422         longval = longval / 1000;
1423         longsec = longval % 60;
1424         longval = longval / 60;
1425         longmin = longval % 60;
1426         longval = longval / 60;
1427         longdeg = longval;
1428
1429         altfrac = altval % 100;
1430         altmeters = (altval / 100) * altsign;
1431
1432         if ((sizestr = strdup(precsize_ntoa(sizeval))) == NULL)
1433                 sizestr = error;
1434         if ((hpstr = strdup(precsize_ntoa(hpval))) == NULL)
1435                 hpstr = error;
1436         if ((vpstr = strdup(precsize_ntoa(vpval))) == NULL)
1437                 vpstr = error;
1438
1439         sprintf(ascii,
1440               "%d %.2d %.2d.%.3d %c %d %.2d %.2d.%.3d %c %d.%.2dm %sm %sm %sm",
1441                 latdeg, latmin, latsec, latsecfrac, northsouth,
1442                 longdeg, longmin, longsec, longsecfrac, eastwest,
1443                 altmeters, altfrac, sizestr, hpstr, vpstr);
1444
1445         if (sizestr != error)
1446                 free(sizestr);
1447         if (hpstr != error)
1448                 free(hpstr);
1449         if (vpstr != error)
1450                 free(vpstr);
1451
1452         return (ascii);
1453 }
1454
1455
1456 /* Return the number of DNS hierarchy levels in the name. */
1457 int
1458 __dn_count_labels(name)
1459         char *name;
1460 {
1461         int i, len, count;
1462
1463         len = strlen(name);
1464
1465         for(i = 0, count = 0; i < len; i++) {
1466                 if (name[i] == '.')
1467                         count++;
1468         }
1469
1470         /* don't count initial wildcard */
1471         if (name[0] == '*')
1472                 if (count)
1473                         count--;
1474
1475         /* don't count the null label for root. */
1476         /* if terminating '.' not found, must adjust */
1477         /* count to include last label */
1478         if (len > 0 && name[len-1] != '.')
1479                 count++;
1480         return (count);
1481 }
1482
1483
1484 /*
1485  * Make dates expressed in seconds-since-Jan-1-1970 easy to read.
1486  * SIG records are required to be printed like this, by the Secure DNS RFC.
1487  */
1488 char *
1489 __p_secstodate (secs)
1490         unsigned long secs;
1491 {
1492         static char output[15];         /* YYYYMMDDHHMMSS and null */
1493         time_t clock = secs;
1494         struct tm *time;
1495
1496         time = gmtime(&clock);
1497         time->tm_year += 1900;
1498         time->tm_mon += 1;
1499         sprintf(output, "%04d%02d%02d%02d%02d%02d",
1500                 time->tm_year, time->tm_mon, time->tm_mday,
1501                 time->tm_hour, time->tm_min, time->tm_sec);
1502         return (output);
1503 }