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33 * Permission to use, copy, modify, and distribute this software for any
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46 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
51 * Portions Copyright (c) 1995 by International Business Machines, Inc.
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54 * permission under its copyrights to use, copy, modify, and distribute this
55 * Software with or without fee, provided that the above copyright notice and
56 * all paragraphs of this notice appear in all copies, and that the name of IBM
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64 * dynamic updates in TCP/IP networks by means of the Software. No immunity is
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68 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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70 * DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING
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72 * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES.
76 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
77 * Portions Copyright (c) 1996-1999 by Internet Software Consortium.
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84 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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87 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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89 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
92 #if defined(LIBC_SCCS) && !defined(lint)
93 static const char sccsid[] = "@(#)res_debug.c 8.1 (Berkeley) 6/4/93";
94 static const char rcsid[] = "$Id: res_debug.c,v 1.15.574.1 2008/04/03 02:12:21 marka Exp $";
95 #endif /* LIBC_SCCS and not lint */
97 #include "port_before.h"
99 #include <sys/types.h>
100 #include <sys/param.h>
101 #include <sys/socket.h>
103 #include <netinet/in.h>
104 #include <arpa/inet.h>
105 #include <arpa/nameser.h>
112 #include "resolv_mt.h"
118 #include "port_after.h"
121 # define SPRINTF(x) strlen(sprintf/**/x)
123 # define SPRINTF(x) sprintf x
126 extern const char *_res_opcodes[];
127 extern const char *_res_sectioncodes[];
130 * Print the current options.
133 fp_resstat(const res_state statp, FILE *file) {
136 fprintf(file, ";; res options:");
137 for (mask = 1; mask != 0U; mask <<= 1)
138 if (statp->options & mask)
139 fprintf(file, " %s", p_option(mask));
144 do_section(const res_state statp,
145 ns_msg *handle, ns_sect section,
146 int pflag, FILE *file)
149 static int buflen = 2048;
155 * Print answer records.
157 sflag = (statp->pfcode & pflag);
158 if (statp->pfcode && !sflag)
161 buf = malloc(buflen);
163 fprintf(file, ";; memory allocation failure\n");
167 opcode = (ns_opcode) ns_msg_getflag(*handle, ns_f_opcode);
170 if (ns_parserr(handle, section, rrnum, &rr)) {
172 fprintf(file, ";; ns_parserr: %s\n",
174 else if (rrnum > 0 && sflag != 0 &&
175 (statp->pfcode & RES_PRF_HEAD1))
179 if (rrnum == 0 && sflag != 0 && (statp->pfcode & RES_PRF_HEAD1))
180 fprintf(file, ";; %s SECTION:\n",
181 p_section(section, opcode));
182 if (section == ns_s_qd)
183 fprintf(file, ";;\t%s, type = %s, class = %s\n",
185 p_type(ns_rr_type(rr)),
186 p_class(ns_rr_class(rr)));
187 else if (section == ns_s_ar && ns_rr_type(rr) == ns_t_opt) {
188 u_int16_t optcode, optlen, rdatalen = ns_rr_rdlen(rr);
189 u_int32_t ttl = ns_rr_ttl(rr);
192 "; EDNS: version: %u, udp=%u, flags=%04x\n",
193 (ttl>>16)&0xff, ns_rr_class(rr), ttl&0xffff);
195 while (rdatalen >= 4) {
196 const u_char *cp = ns_rr_rdata(rr);
199 GETSHORT(optcode, cp);
200 GETSHORT(optlen, cp);
202 if (optcode == NS_OPT_NSID) {
203 fputs("; NSID: ", file);
205 fputs("; NSID\n", file);
207 fputs("; NSID: ", file);
208 for (i = 0; i < optlen; i++)
209 fprintf(file, "%02x ",
212 for (i = 0; i < optlen; i++)
220 fprintf(file, "; OPT=%u\n",
223 fprintf(file, "; OPT=%u: ",
225 for (i = 0; i < optlen; i++)
226 fprintf(file, "%02x ",
229 for (i = 0; i < optlen; i++)
236 rdatalen -= 4 + optlen;
239 n = ns_sprintrr(handle, &rr, NULL, NULL,
242 if (errno == ENOSPC) {
246 buf = malloc(buflen += 1024);
249 ";; memory allocation failure\n");
254 fprintf(file, ";; ns_sprintrr: %s\n",
269 * Print the contents of a query.
270 * This is intended to be primarily a debugging routine.
273 res_pquery(const res_state statp, const u_char *msg, int len, FILE *file) {
275 int qdcount, ancount, nscount, arcount;
276 u_int opcode, rcode, id;
278 if (ns_initparse(msg, len, &handle) < 0) {
279 fprintf(file, ";; ns_initparse: %s\n", strerror(errno));
282 opcode = ns_msg_getflag(handle, ns_f_opcode);
283 rcode = ns_msg_getflag(handle, ns_f_rcode);
284 id = ns_msg_id(handle);
285 qdcount = ns_msg_count(handle, ns_s_qd);
286 ancount = ns_msg_count(handle, ns_s_an);
287 nscount = ns_msg_count(handle, ns_s_ns);
288 arcount = ns_msg_count(handle, ns_s_ar);
291 * Print header fields.
293 if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEADX) || rcode)
295 ";; ->>HEADER<<- opcode: %s, status: %s, id: %d\n",
296 _res_opcodes[opcode], p_rcode(rcode), id);
297 if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEADX))
299 if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEAD2)) {
300 fprintf(file, "; flags:");
301 if (ns_msg_getflag(handle, ns_f_qr))
302 fprintf(file, " qr");
303 if (ns_msg_getflag(handle, ns_f_aa))
304 fprintf(file, " aa");
305 if (ns_msg_getflag(handle, ns_f_tc))
306 fprintf(file, " tc");
307 if (ns_msg_getflag(handle, ns_f_rd))
308 fprintf(file, " rd");
309 if (ns_msg_getflag(handle, ns_f_ra))
310 fprintf(file, " ra");
311 if (ns_msg_getflag(handle, ns_f_z))
312 fprintf(file, " ??");
313 if (ns_msg_getflag(handle, ns_f_ad))
314 fprintf(file, " ad");
315 if (ns_msg_getflag(handle, ns_f_cd))
316 fprintf(file, " cd");
318 if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEAD1)) {
319 fprintf(file, "; %s: %d",
320 p_section(ns_s_qd, opcode), qdcount);
321 fprintf(file, ", %s: %d",
322 p_section(ns_s_an, opcode), ancount);
323 fprintf(file, ", %s: %d",
324 p_section(ns_s_ns, opcode), nscount);
325 fprintf(file, ", %s: %d",
326 p_section(ns_s_ar, opcode), arcount);
328 if ((!statp->pfcode) || (statp->pfcode &
329 (RES_PRF_HEADX | RES_PRF_HEAD2 | RES_PRF_HEAD1))) {
333 * Print the various sections.
335 do_section(statp, &handle, ns_s_qd, RES_PRF_QUES, file);
336 do_section(statp, &handle, ns_s_an, RES_PRF_ANS, file);
337 do_section(statp, &handle, ns_s_ns, RES_PRF_AUTH, file);
338 do_section(statp, &handle, ns_s_ar, RES_PRF_ADD, file);
339 if (qdcount == 0 && ancount == 0 &&
340 nscount == 0 && arcount == 0)
345 p_cdnname(const u_char *cp, const u_char *msg, int len, FILE *file) {
349 if ((n = dn_expand(msg, msg + len, cp, name, sizeof name)) < 0)
359 p_cdname(const u_char *cp, const u_char *msg, FILE *file) {
360 return (p_cdnname(cp, msg, PACKETSZ, file));
364 * Return a fully-qualified domain name from a compressed name (with
368 p_fqnname(const u_char *cp, const u_char *msg, int msglen, char *name,
373 if ((n = dn_expand(msg, cp + msglen, cp, name, namelen)) < 0)
375 newlen = strlen(name);
376 if (newlen == 0 || name[newlen - 1] != '.') {
377 if (newlen + 1 >= namelen) /*%< Lack space for final dot */
380 strcpy(name + newlen, ".");
385 /* XXX: the rest of these functions need to become length-limited, too. */
388 p_fqname(const u_char *cp, const u_char *msg, FILE *file) {
392 n = p_fqnname(cp, msg, MAXCDNAME, name, sizeof name);
400 * Names of RR classes and qclasses. Classes and qclasses are the same, except
401 * that C_ANY is a qclass but not a class. (You can ask for records of class
402 * C_ANY, but you can't have any records of that class in the database.)
404 const struct res_sym __p_class_syms[] = {
405 {C_IN, "IN", (char *)0},
406 {C_CHAOS, "CH", (char *)0},
407 {C_CHAOS, "CHAOS", (char *)0},
408 {C_HS, "HS", (char *)0},
409 {C_HS, "HESIOD", (char *)0},
410 {C_ANY, "ANY", (char *)0},
411 {C_NONE, "NONE", (char *)0},
412 {C_IN, (char *)0, (char *)0}
416 * Names of message sections.
418 const struct res_sym __p_default_section_syms[] = {
419 {ns_s_qd, "QUERY", (char *)0},
420 {ns_s_an, "ANSWER", (char *)0},
421 {ns_s_ns, "AUTHORITY", (char *)0},
422 {ns_s_ar, "ADDITIONAL", (char *)0},
423 {0, (char *)0, (char *)0}
426 const struct res_sym __p_update_section_syms[] = {
427 {S_ZONE, "ZONE", (char *)0},
428 {S_PREREQ, "PREREQUISITE", (char *)0},
429 {S_UPDATE, "UPDATE", (char *)0},
430 {S_ADDT, "ADDITIONAL", (char *)0},
431 {0, (char *)0, (char *)0}
434 const struct res_sym __p_key_syms[] = {
435 {NS_ALG_MD5RSA, "RSA", "RSA KEY with MD5 hash"},
436 {NS_ALG_DH, "DH", "Diffie Hellman"},
437 {NS_ALG_DSA, "DSA", "Digital Signature Algorithm"},
438 {NS_ALG_EXPIRE_ONLY, "EXPIREONLY", "No algorithm"},
439 {NS_ALG_PRIVATE_OID, "PRIVATE", "Algorithm obtained from OID"},
443 const struct res_sym __p_cert_syms[] = {
444 {cert_t_pkix, "PKIX", "PKIX (X.509v3) Certificate"},
445 {cert_t_spki, "SPKI", "SPKI certificate"},
446 {cert_t_pgp, "PGP", "PGP certificate"},
447 {cert_t_url, "URL", "URL Private"},
448 {cert_t_oid, "OID", "OID Private"},
453 * Names of RR types and qtypes. Types and qtypes are the same, except
454 * that T_ANY is a qtype but not a type. (You can ask for records of type
455 * T_ANY, but you can't have any records of that type in the database.)
457 const struct res_sym __p_type_syms[] = {
458 {ns_t_a, "A", "address"},
459 {ns_t_ns, "NS", "name server"},
460 {ns_t_md, "MD", "mail destination (deprecated)"},
461 {ns_t_mf, "MF", "mail forwarder (deprecated)"},
462 {ns_t_cname, "CNAME", "canonical name"},
463 {ns_t_soa, "SOA", "start of authority"},
464 {ns_t_mb, "MB", "mailbox"},
465 {ns_t_mg, "MG", "mail group member"},
466 {ns_t_mr, "MR", "mail rename"},
467 {ns_t_null, "NULL", "null"},
468 {ns_t_wks, "WKS", "well-known service (deprecated)"},
469 {ns_t_ptr, "PTR", "domain name pointer"},
470 {ns_t_hinfo, "HINFO", "host information"},
471 {ns_t_minfo, "MINFO", "mailbox information"},
472 {ns_t_mx, "MX", "mail exchanger"},
473 {ns_t_txt, "TXT", "text"},
474 {ns_t_rp, "RP", "responsible person"},
475 {ns_t_afsdb, "AFSDB", "DCE or AFS server"},
476 {ns_t_x25, "X25", "X25 address"},
477 {ns_t_isdn, "ISDN", "ISDN address"},
478 {ns_t_rt, "RT", "router"},
479 {ns_t_nsap, "NSAP", "nsap address"},
480 {ns_t_nsap_ptr, "NSAP_PTR", "domain name pointer"},
481 {ns_t_sig, "SIG", "signature"},
482 {ns_t_key, "KEY", "key"},
483 {ns_t_px, "PX", "mapping information"},
484 {ns_t_gpos, "GPOS", "geographical position (withdrawn)"},
485 {ns_t_aaaa, "AAAA", "IPv6 address"},
486 {ns_t_loc, "LOC", "location"},
487 {ns_t_nxt, "NXT", "next valid name (unimplemented)"},
488 {ns_t_eid, "EID", "endpoint identifier (unimplemented)"},
489 {ns_t_nimloc, "NIMLOC", "NIMROD locator (unimplemented)"},
490 {ns_t_srv, "SRV", "server selection"},
491 {ns_t_atma, "ATMA", "ATM address (unimplemented)"},
492 {ns_t_tkey, "TKEY", "tkey"},
493 {ns_t_tsig, "TSIG", "transaction signature"},
494 {ns_t_ixfr, "IXFR", "incremental zone transfer"},
495 {ns_t_axfr, "AXFR", "zone transfer"},
496 {ns_t_zxfr, "ZXFR", "compressed zone transfer"},
497 {ns_t_mailb, "MAILB", "mailbox-related data (deprecated)"},
498 {ns_t_maila, "MAILA", "mail agent (deprecated)"},
499 {ns_t_naptr, "NAPTR", "URN Naming Authority"},
500 {ns_t_kx, "KX", "Key Exchange"},
501 {ns_t_cert, "CERT", "Certificate"},
502 {ns_t_a6, "A6", "IPv6 Address"},
503 {ns_t_dname, "DNAME", "dname"},
504 {ns_t_sink, "SINK", "Kitchen Sink (experimental)"},
505 {ns_t_opt, "OPT", "EDNS Options"},
506 {ns_t_any, "ANY", "\"any\""},
511 * Names of DNS rcodes.
513 const struct res_sym __p_rcode_syms[] = {
514 {ns_r_noerror, "NOERROR", "no error"},
515 {ns_r_formerr, "FORMERR", "format error"},
516 {ns_r_servfail, "SERVFAIL", "server failed"},
517 {ns_r_nxdomain, "NXDOMAIN", "no such domain name"},
518 {ns_r_notimpl, "NOTIMP", "not implemented"},
519 {ns_r_refused, "REFUSED", "refused"},
520 {ns_r_yxdomain, "YXDOMAIN", "domain name exists"},
521 {ns_r_yxrrset, "YXRRSET", "rrset exists"},
522 {ns_r_nxrrset, "NXRRSET", "rrset doesn't exist"},
523 {ns_r_notauth, "NOTAUTH", "not authoritative"},
524 {ns_r_notzone, "NOTZONE", "Not in zone"},
526 {ns_r_badsig, "BADSIG", "bad signature"},
527 {ns_r_badkey, "BADKEY", "bad key"},
528 {ns_r_badtime, "BADTIME", "bad time"},
533 sym_ston(const struct res_sym *syms, const char *name, int *success) {
534 for ((void)NULL; syms->name != 0; syms++) {
535 if (strcasecmp (name, syms->name) == 0) {
538 return (syms->number);
543 return (syms->number); /*%< The default value. */
547 sym_ntos(const struct res_sym *syms, int number, int *success) {
548 char *unname = sym_ntos_unname;
550 for ((void)NULL; syms->name != 0; syms++) {
551 if (number == syms->number) {
558 sprintf(unname, "%d", number); /*%< XXX nonreentrant */
565 sym_ntop(const struct res_sym *syms, int number, int *success) {
566 char *unname = sym_ntop_unname;
568 for ((void)NULL; syms->name != 0; syms++) {
569 if (number == syms->number) {
572 return (syms->humanname);
575 sprintf(unname, "%d", number); /*%< XXX nonreentrant */
582 * Return a string for the type.
588 static char typebuf[20];
590 result = sym_ntos(__p_type_syms, type, &success);
593 if (type < 0 || type > 0xffff)
595 sprintf(typebuf, "TYPE%d", type);
600 * Return a string for the type.
603 p_section(int section, int opcode) {
604 const struct res_sym *symbols;
608 symbols = __p_update_section_syms;
611 symbols = __p_default_section_syms;
614 return (sym_ntos(symbols, section, (int *)0));
618 * Return a mnemonic for class.
624 static char classbuf[20];
626 result = sym_ntos(__p_class_syms, class, &success);
629 if (class < 0 || class > 0xffff)
631 sprintf(classbuf, "CLASS%d", class);
636 * Return a mnemonic for an option
639 p_option(u_long option) {
640 char *nbuf = p_option_nbuf;
643 case RES_INIT: return "init";
644 case RES_DEBUG: return "debug";
645 case RES_AAONLY: return "aaonly(unimpl)";
646 case RES_USEVC: return "usevc";
647 case RES_PRIMARY: return "primry(unimpl)";
648 case RES_IGNTC: return "igntc";
649 case RES_RECURSE: return "recurs";
650 case RES_DEFNAMES: return "defnam";
651 case RES_STAYOPEN: return "styopn";
652 case RES_DNSRCH: return "dnsrch";
653 case RES_INSECURE1: return "insecure1";
654 case RES_INSECURE2: return "insecure2";
655 case RES_NOALIASES: return "noaliases";
656 case RES_USE_INET6: return "inet6";
657 #ifdef RES_USE_EDNS0 /*%< KAME extension */
658 case RES_USE_EDNS0: return "edns0";
659 case RES_NSID: return "nsid";
662 case RES_USE_DNAME: return "dname";
664 #ifdef RES_USE_DNSSEC
665 case RES_USE_DNSSEC: return "dnssec";
667 #ifdef RES_NOTLDQUERY
668 case RES_NOTLDQUERY: return "no-tld-query";
670 #ifdef RES_NO_NIBBLE2
671 case RES_NO_NIBBLE2: return "no-nibble2";
673 /* XXX nonreentrant */
674 default: sprintf(nbuf, "?0x%lx?", (u_long)option);
680 * Return a mnemonic for a time to live.
683 p_time(u_int32_t value) {
684 char *nbuf = p_time_nbuf;
686 if (ns_format_ttl(value, nbuf, sizeof nbuf) < 0)
687 sprintf(nbuf, "%u", value);
692 * Return a string for the rcode.
696 return (sym_ntos(__p_rcode_syms, rcode, (int *)0));
700 * Return a string for a res_sockaddr_union.
703 p_sockun(union res_sockaddr_union u, char *buf, size_t size) {
704 char ret[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:123.123.123.123"];
706 switch (u.sin.sin_family) {
708 inet_ntop(AF_INET, &u.sin.sin_addr, ret, sizeof ret);
710 #ifdef HAS_INET6_STRUCTS
712 inet_ntop(AF_INET6, &u.sin6.sin6_addr, ret, sizeof ret);
716 sprintf(ret, "[af%d]", u.sin.sin_family);
720 strncpy(buf, ret, size - 1);
727 * routines to convert between on-the-wire RR format and zone file format.
728 * Does not contain conversion to/from decimal degrees; divide or multiply
729 * by 60*60*1000 for that.
732 static unsigned int poweroften[10] = {1, 10, 100, 1000, 10000, 100000,
733 1000000,10000000,100000000,1000000000};
735 /*% takes an XeY precision/size value, returns a string representation. */
737 precsize_ntoa(u_int8_t prec)
739 char *retbuf = precsize_ntoa_retbuf;
741 int mantissa, exponent;
743 mantissa = (int)((prec >> 4) & 0x0f) % 10;
744 exponent = (int)((prec >> 0) & 0x0f) % 10;
746 val = mantissa * poweroften[exponent];
748 (void) sprintf(retbuf, "%lu.%.2lu", val/100, val%100);
752 /*% converts ascii size/precision X * 10**Y(cm) to 0xXY. moves pointer. */
754 precsize_aton(const char **strptr) {
755 unsigned int mval = 0, cmval = 0;
763 while (isdigit((unsigned char)*cp))
764 mval = mval * 10 + (*cp++ - '0');
766 if (*cp == '.') { /*%< centimeters */
768 if (isdigit((unsigned char)*cp)) {
769 cmval = (*cp++ - '0') * 10;
770 if (isdigit((unsigned char)*cp)) {
771 cmval += (*cp++ - '0');
775 cmval = (mval * 100) + cmval;
777 for (exponent = 0; exponent < 9; exponent++)
778 if (cmval < poweroften[exponent+1])
781 mantissa = cmval / poweroften[exponent];
785 retval = (mantissa << 4) | exponent;
792 /*% converts ascii lat/lon to unsigned encoded 32-bit number. moves pointer. */
794 latlon2ul(const char **latlonstrptr, int *which) {
797 int deg = 0, min = 0, secs = 0, secsfrac = 0;
801 while (isdigit((unsigned char)*cp))
802 deg = deg * 10 + (*cp++ - '0');
804 while (isspace((unsigned char)*cp))
807 if (!(isdigit((unsigned char)*cp)))
810 while (isdigit((unsigned char)*cp))
811 min = min * 10 + (*cp++ - '0');
813 while (isspace((unsigned char)*cp))
816 if (!(isdigit((unsigned char)*cp)))
819 while (isdigit((unsigned char)*cp))
820 secs = secs * 10 + (*cp++ - '0');
822 if (*cp == '.') { /*%< decimal seconds */
824 if (isdigit((unsigned char)*cp)) {
825 secsfrac = (*cp++ - '0') * 100;
826 if (isdigit((unsigned char)*cp)) {
827 secsfrac += (*cp++ - '0') * 10;
828 if (isdigit((unsigned char)*cp)) {
829 secsfrac += (*cp++ - '0');
835 while (!isspace((unsigned char)*cp)) /*%< if any trailing garbage */
838 while (isspace((unsigned char)*cp))
845 retval = ((unsigned)1<<31)
846 + (((((deg * 60) + min) * 60) + secs) * 1000)
851 retval = ((unsigned)1<<31)
852 - (((((deg * 60) + min) * 60) + secs) * 1000)
856 retval = 0; /*%< invalid value -- indicates error */
863 *which = 1; /*%< latitude */
867 *which = 2; /*%< longitude */
870 *which = 0; /*%< error */
874 cp++; /*%< skip the hemisphere */
875 while (!isspace((unsigned char)*cp)) /*%< if any trailing garbage */
878 while (isspace((unsigned char)*cp)) /*%< move to next field */
887 * converts a zone file representation in a string to an RDATA on-the-wire
890 loc_aton(const char *ascii, u_char *binary)
892 const char *cp, *maxcp;
895 u_int32_t latit = 0, longit = 0, alt = 0;
896 u_int32_t lltemp1 = 0, lltemp2 = 0;
897 int altmeters = 0, altfrac = 0, altsign = 1;
898 u_int8_t hp = 0x16; /*%< default = 1e6 cm = 10000.00m = 10km */
899 u_int8_t vp = 0x13; /*%< default = 1e3 cm = 10.00m */
900 u_int8_t siz = 0x12; /*%< default = 1e2 cm = 1.00m */
901 int which1 = 0, which2 = 0;
904 maxcp = cp + strlen(ascii);
906 lltemp1 = latlon2ul(&cp, &which1);
908 lltemp2 = latlon2ul(&cp, &which2);
910 switch (which1 + which2) {
911 case 3: /*%< 1 + 2, the only valid combination */
912 if ((which1 == 1) && (which2 == 2)) { /*%< normal case */
915 } else if ((which1 == 2) && (which2 == 1)) { /*%< reversed */
918 } else { /*%< some kind of brokenness */
922 default: /*%< we didn't get one of each */
935 while (isdigit((unsigned char)*cp))
936 altmeters = altmeters * 10 + (*cp++ - '0');
938 if (*cp == '.') { /*%< decimal meters */
940 if (isdigit((unsigned char)*cp)) {
941 altfrac = (*cp++ - '0') * 10;
942 if (isdigit((unsigned char)*cp)) {
943 altfrac += (*cp++ - '0');
948 alt = (10000000 + (altsign * (altmeters * 100 + altfrac)));
950 while (!isspace((unsigned char)*cp) && (cp < maxcp)) /*%< if trailing garbage or m */
953 while (isspace((unsigned char)*cp) && (cp < maxcp))
959 siz = precsize_aton(&cp);
961 while (!isspace((unsigned char)*cp) && (cp < maxcp)) /*%< if trailing garbage or m */
964 while (isspace((unsigned char)*cp) && (cp < maxcp))
970 hp = precsize_aton(&cp);
972 while (!isspace((unsigned char)*cp) && (cp < maxcp)) /*%< if trailing garbage or m */
975 while (isspace((unsigned char)*cp) && (cp < maxcp))
981 vp = precsize_aton(&cp);
986 *bcp++ = (u_int8_t) 0; /*%< version byte */
994 return (16); /*%< size of RR in octets */
997 /*% takes an on-the-wire LOC RR and formats it in a human readable format. */
999 loc_ntoa(const u_char *binary, char *ascii)
1001 static const char *error = "?";
1002 static char tmpbuf[sizeof
1003 "1000 60 60.000 N 1000 60 60.000 W -12345678.00m 90000000.00m 90000000.00m 90000000.00m"];
1004 const u_char *cp = binary;
1006 int latdeg, latmin, latsec, latsecfrac;
1007 int longdeg, longmin, longsec, longsecfrac;
1008 char northsouth, eastwest;
1009 const char *altsign;
1010 int altmeters, altfrac;
1012 const u_int32_t referencealt = 100000 * 100;
1014 int32_t latval, longval, altval;
1016 u_int8_t sizeval, hpval, vpval, versionval;
1018 char *sizestr, *hpstr, *vpstr;
1026 (void) sprintf(ascii, "; error: unknown LOC RR version");
1036 latval = (templ - ((unsigned)1<<31));
1039 longval = (templ - ((unsigned)1<<31));
1042 if (templ < referencealt) { /*%< below WGS 84 spheroid */
1043 altval = referencealt - templ;
1046 altval = templ - referencealt;
1056 latsecfrac = latval % 1000;
1057 latval = latval / 1000;
1058 latsec = latval % 60;
1059 latval = latval / 60;
1060 latmin = latval % 60;
1061 latval = latval / 60;
1070 longsecfrac = longval % 1000;
1071 longval = longval / 1000;
1072 longsec = longval % 60;
1073 longval = longval / 60;
1074 longmin = longval % 60;
1075 longval = longval / 60;
1078 altfrac = altval % 100;
1079 altmeters = (altval / 100);
1081 sizestr = strdup(precsize_ntoa(sizeval));
1082 hpstr = strdup(precsize_ntoa(hpval));
1083 vpstr = strdup(precsize_ntoa(vpval));
1086 "%d %.2d %.2d.%.3d %c %d %.2d %.2d.%.3d %c %s%d.%.2dm %sm %sm %sm",
1087 latdeg, latmin, latsec, latsecfrac, northsouth,
1088 longdeg, longmin, longsec, longsecfrac, eastwest,
1089 altsign, altmeters, altfrac,
1090 (sizestr != NULL) ? sizestr : error,
1091 (hpstr != NULL) ? hpstr : error,
1092 (vpstr != NULL) ? vpstr : error);
1094 if (sizestr != NULL)
1105 /*% Return the number of DNS hierarchy levels in the name. */
1107 dn_count_labels(const char *name) {
1111 for (i = 0, count = 0; i < len; i++) {
1112 /* XXX need to check for \. or use named's nlabels(). */
1117 /* don't count initial wildcard */
1122 /* don't count the null label for root. */
1123 /* if terminating '.' not found, must adjust */
1124 /* count to include last label */
1125 if (len > 0 && name[len-1] != '.')
1131 * Make dates expressed in seconds-since-Jan-1-1970 easy to read.
1132 * SIG records are required to be printed like this, by the Secure DNS RFC.
1135 p_secstodate (u_long secs) {
1136 char *output = p_secstodate_output;
1137 time_t clock = secs;
1142 time = gmtime_r(&clock, &res);
1144 time = gmtime(&clock);
1146 time->tm_year += 1900;
1148 sprintf(output, "%04d%02d%02d%02d%02d%02d",
1149 time->tm_year, time->tm_mon, time->tm_mday,
1150 time->tm_hour, time->tm_min, time->tm_sec);
1155 res_nametoclass(const char *buf, int *successp) {
1156 unsigned long result;
1160 result = sym_ston(__p_class_syms, buf, &success);
1164 if (strncasecmp(buf, "CLASS", 5) != 0 ||
1165 !isdigit((unsigned char)buf[5]))
1168 result = strtoul(buf + 5, &endptr, 10);
1169 if (errno == 0 && *endptr == '\0' && result <= 0xffffU)
1173 *successp = success;
1178 res_nametotype(const char *buf, int *successp) {
1179 unsigned long result;
1183 result = sym_ston(__p_type_syms, buf, &success);
1187 if (strncasecmp(buf, "type", 4) != 0 ||
1188 !isdigit((unsigned char)buf[4]))
1191 result = strtoul(buf + 4, &endptr, 10);
1192 if (errno == 0 && *endptr == '\0' && result <= 0xffffU)
1196 *successp = success;
1202 * Weak aliases for applications that use certain private entry points,
1203 * and fail to include <resolv.h>.
1206 __weak_reference(__fp_resstat, fp_resstat);
1208 __weak_reference(__p_fqnname, p_fqnname);
1210 __weak_reference(__sym_ston, sym_ston);
1212 __weak_reference(__sym_ntos, sym_ntos);
1214 __weak_reference(__sym_ntop, sym_ntop);
1215 #undef dn_count_labels
1216 __weak_reference(__dn_count_labels, dn_count_labels);
1218 __weak_reference(__p_secstodate, p_secstodate);