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[netbsd-mini2440.git] / external / bsd / libbind / dist / resolv / res_debug.c
blob7436c4378efdbd6411e6cbea0b57747ce27e3ab1
1 /* $NetBSD$ */
2
3 /*
4 * Portions Copyright (C) 2004, 2005, 2008, 2009 Internet Systems Consortium, Inc. ("ISC")
5 * Portions Copyright (C) 1996-2003 Internet Software Consortium.
6 *
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
12 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
13 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
14 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
15 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
16 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17 * PERFORMANCE OF THIS SOFTWARE.
18 */
19
20 /*
21 * Copyright (c) 1985
22 * The Regents of the University of California. All rights reserved.
23 *
24 * Redistribution and use in source and binary forms, with or without
25 * modification, are permitted provided that the following conditions
26 * are met:
27 * 1. Redistributions of source code must retain the above copyright
28 * notice, this list of conditions and the following disclaimer.
29 * 2. Redistributions in binary form must reproduce the above copyright
30 * notice, this list of conditions and the following disclaimer in the
31 * documentation and/or other materials provided with the distribution.
32 * 3. All advertising materials mentioning features or use of this software
33 * must display the following acknowledgement:
34 * This product includes software developed by the University of
35 * California, Berkeley and its contributors.
36 * 4. Neither the name of the University nor the names of its contributors
37 * may be used to endorse or promote products derived from this software
38 * without specific prior written permission.
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50 * SUCH DAMAGE.
51 */
52
53 /*
54 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
55 *
56 * Permission to use, copy, modify, and distribute this software for any
57 * purpose with or without fee is hereby granted, provided that the above
58 * copyright notice and this permission notice appear in all copies, and that
59 * the name of Digital Equipment Corporation not be used in advertising or
60 * publicity pertaining to distribution of the document or software without
61 * specific, written prior permission.
62 *
63 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
64 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
65 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
66 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
67 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
68 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
69 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
70 * SOFTWARE.
71 */
72
73 /*
74 * Portions Copyright (c) 1995 by International Business Machines, Inc.
75 *
76 * International Business Machines, Inc. (hereinafter called IBM) grants
77 * permission under its copyrights to use, copy, modify, and distribute this
78 * Software with or without fee, provided that the above copyright notice and
79 * all paragraphs of this notice appear in all copies, and that the name of IBM
80 * not be used in connection with the marketing of any product incorporating
81 * the Software or modifications thereof, without specific, written prior
82 * permission.
83 *
84 * To the extent it has a right to do so, IBM grants an immunity from suit
85 * under its patents, if any, for the use, sale or manufacture of products to
86 * the extent that such products are used for performing Domain Name System
87 * dynamic updates in TCP/IP networks by means of the Software. No immunity is
88 * granted for any product per se or for any other function of any product.
89 *
90 * THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES,
91 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
92 * PARTICULAR PURPOSE. IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL,
93 * DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING
94 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN
95 * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES.
96 */
97
98 #if defined(LIBC_SCCS) && !defined(lint)
99 static const char sccsid[] = "@(#)res_debug.c 8.1 (Berkeley) 6/4/93";
100 static const char rcsid[] = "Id: res_debug.c,v 1.19 2009/02/26 11:20:20 tbox Exp";
101 #endif /* LIBC_SCCS and not lint */
102
103 #include "port_before.h"
104
105 #include <sys/types.h>
106 #include <sys/param.h>
107 #include <sys/socket.h>
108
109 #include <netinet/in.h>
110 #include <arpa/inet.h>
111 #include <arpa/nameser.h>
112
113 #include <ctype.h>
114 #include <errno.h>
115 #include <math.h>
116 #include <netdb.h>
117 #include <resolv.h>
118 #include <resolv_mt.h>
119 #include <stdio.h>
120 #include <stdlib.h>
121 #include <string.h>
122 #include <time.h>
123
124 #include "port_after.h"
125
126 #ifdef SPRINTF_CHAR
127 # define SPRINTF(x) strlen(sprintf/**/x)
128 #else
129 # define SPRINTF(x) sprintf x
130 #endif
131
132 extern const char *_res_opcodes[];
133 extern const char *_res_sectioncodes[];
134
135 /*%
136 * Print the current options.
137 */
138 void
139 fp_resstat(const res_state statp, FILE *file) {
140 u_long mask;
141
142 fprintf(file, ";; res options:");
143 for (mask = 1; mask != 0U; mask <<= 1)
144 if (statp->options & mask)
145 fprintf(file, " %s", p_option(mask));
146 putc('\n', file);
147 }
148
149 static void
150 do_section(const res_state statp,
151 ns_msg *handle, ns_sect section,
152 int pflag, FILE *file)
153 {
154 int n, sflag, rrnum;
155 static int buflen = 2048;
156 char *buf;
157 ns_opcode opcode;
158 ns_rr rr;
159
160 /*
161 * Print answer records.
162 */
163 sflag = (statp->pfcode & pflag);
164 if (statp->pfcode && !sflag)
165 return;
166
167 buf = malloc(buflen);
168 if (buf == NULL) {
169 fprintf(file, ";; memory allocation failure\n");
170 return;
171 }
172
173 opcode = (ns_opcode) ns_msg_getflag(*handle, ns_f_opcode);
174 rrnum = 0;
175 for (;;) {
176 if (ns_parserr(handle, section, rrnum, &rr)) {
177 if (errno != ENODEV)
178 fprintf(file, ";; ns_parserr: %s\n",
179 strerror(errno));
180 else if (rrnum > 0 && sflag != 0 &&
181 (statp->pfcode & RES_PRF_HEAD1))
182 putc('\n', file);
183 goto cleanup;
184 }
185 if (rrnum == 0 && sflag != 0 && (statp->pfcode & RES_PRF_HEAD1))
186 fprintf(file, ";; %s SECTION:\n",
187 p_section(section, opcode));
188 if (section == ns_s_qd)
189 fprintf(file, ";;\t%s, type = %s, class = %s\n",
190 ns_rr_name(rr),
191 p_type(ns_rr_type(rr)),
192 p_class(ns_rr_class(rr)));
193 else if (section == ns_s_ar && ns_rr_type(rr) == ns_t_opt) {
194 u_int16_t optcode, optlen, rdatalen = ns_rr_rdlen(rr);
195 u_int32_t ttl = ns_rr_ttl(rr);
196
197 fprintf(file,
198 "; EDNS: version: %u, udp=%u, flags=%04x\n",
199 (ttl>>16)&0xff, ns_rr_class(rr), ttl&0xffff);
200
201 while (rdatalen >= 4) {
202 const u_char *cp = ns_rr_rdata(rr);
203 int i;
204
205 GETSHORT(optcode, cp);
206 GETSHORT(optlen, cp);
207
208 if (optcode == NS_OPT_NSID) {
209 fputs("; NSID: ", file);
210 if (optlen == 0) {
211 fputs("; NSID\n", file);
212 } else {
213 fputs("; NSID: ", file);
214 for (i = 0; i < optlen; i++)
215 fprintf(file, "%02x ",
216 cp[i]);
217 fputs(" (",file);
218 for (i = 0; i < optlen; i++)
219 fprintf(file, "%c",
220 isprint(cp[i])?
221 cp[i] : '.');
222 fputs(")\n", file);
223 }
224 } else {
225 if (optlen == 0) {
226 fprintf(file, "; OPT=%u\n",
227 optcode);
228 } else {
229 fprintf(file, "; OPT=%u: ",
230 optcode);
231 for (i = 0; i < optlen; i++)
232 fprintf(file, "%02x ",
233 cp[i]);
234 fputs(" (",file);
235 for (i = 0; i < optlen; i++)
236 fprintf(file, "%c",
237 isprint(cp[i]) ?
238 cp[i] : '.');
239 fputs(")\n", file);
240 }
241 }
242 rdatalen -= 4 + optlen;
243 }
244 } else {
245 n = ns_sprintrr(handle, &rr, NULL, NULL,
246 buf, buflen);
247 if (n < 0) {
248 if (errno == ENOSPC) {
249 free(buf);
250 buf = NULL;
251 if (buflen < 131072)
252 buf = malloc(buflen += 1024);
253 if (buf == NULL) {
254 fprintf(file,
255 ";; memory allocation failure\n");
256 return;
257 }
258 continue;
259 }
260 fprintf(file, ";; ns_sprintrr: %s\n",
261 strerror(errno));
262 goto cleanup;
263 }
264 fputs(buf, file);
265 fputc('\n', file);
266 }
267 rrnum++;
268 }
269 cleanup:
270 if (buf != NULL)
271 free(buf);
272 }
273
274 /*%
275 * Print the contents of a query.
276 * This is intended to be primarily a debugging routine.
277 */
278 void
279 res_pquery(const res_state statp, const u_char *msg, int len, FILE *file) {
280 ns_msg handle;
281 int qdcount, ancount, nscount, arcount;
282 u_int opcode, rcode, id;
283
284 if (ns_initparse(msg, len, &handle) < 0) {
285 fprintf(file, ";; ns_initparse: %s\n", strerror(errno));
286 return;
287 }
288 opcode = ns_msg_getflag(handle, ns_f_opcode);
289 rcode = ns_msg_getflag(handle, ns_f_rcode);
290 id = ns_msg_id(handle);
291 qdcount = ns_msg_count(handle, ns_s_qd);
292 ancount = ns_msg_count(handle, ns_s_an);
293 nscount = ns_msg_count(handle, ns_s_ns);
294 arcount = ns_msg_count(handle, ns_s_ar);
295
296 /*
297 * Print header fields.
298 */
299 if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEADX) || rcode)
300 fprintf(file,
301 ";; ->>HEADER<<- opcode: %s, status: %s, id: %d\n",
302 _res_opcodes[opcode], p_rcode(rcode), id);
303 if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEADX))
304 putc(';', file);
305 if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEAD2)) {
306 fprintf(file, "; flags:");
307 if (ns_msg_getflag(handle, ns_f_qr))
308 fprintf(file, " qr");
309 if (ns_msg_getflag(handle, ns_f_aa))
310 fprintf(file, " aa");
311 if (ns_msg_getflag(handle, ns_f_tc))
312 fprintf(file, " tc");
313 if (ns_msg_getflag(handle, ns_f_rd))
314 fprintf(file, " rd");
315 if (ns_msg_getflag(handle, ns_f_ra))
316 fprintf(file, " ra");
317 if (ns_msg_getflag(handle, ns_f_z))
318 fprintf(file, " ??");
319 if (ns_msg_getflag(handle, ns_f_ad))
320 fprintf(file, " ad");
321 if (ns_msg_getflag(handle, ns_f_cd))
322 fprintf(file, " cd");
323 }
324 if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEAD1)) {
325 fprintf(file, "; %s: %d",
326 p_section(ns_s_qd, opcode), qdcount);
327 fprintf(file, ", %s: %d",
328 p_section(ns_s_an, opcode), ancount);
329 fprintf(file, ", %s: %d",
330 p_section(ns_s_ns, opcode), nscount);
331 fprintf(file, ", %s: %d",
332 p_section(ns_s_ar, opcode), arcount);
333 }
334 if ((!statp->pfcode) || (statp->pfcode &
335 (RES_PRF_HEADX | RES_PRF_HEAD2 | RES_PRF_HEAD1))) {
336 putc('\n',file);
337 }
338 /*
339 * Print the various sections.
340 */
341 do_section(statp, &handle, ns_s_qd, RES_PRF_QUES, file);
342 do_section(statp, &handle, ns_s_an, RES_PRF_ANS, file);
343 do_section(statp, &handle, ns_s_ns, RES_PRF_AUTH, file);
344 do_section(statp, &handle, ns_s_ar, RES_PRF_ADD, file);
345 if (qdcount == 0 && ancount == 0 &&
346 nscount == 0 && arcount == 0)
347 putc('\n', file);
348 }
349
350 const u_char *
351 p_cdnname(const u_char *cp, const u_char *msg, int len, FILE *file) {
352 char name[MAXDNAME];
353 int n;
354
355 if ((n = dn_expand(msg, msg + len, cp, name, sizeof name)) < 0)
356 return (NULL);
357 if (name[0] == '\0')
358 putc('.', file);
359 else
360 fputs(name, file);
361 return (cp + n);
362 }
363
364 const u_char *
365 p_cdname(const u_char *cp, const u_char *msg, FILE *file) {
366 return (p_cdnname(cp, msg, PACKETSZ, file));
367 }
368
369 /*%
370 * Return a fully-qualified domain name from a compressed name (with
371 length supplied). */
372
373 const u_char *
374 p_fqnname(cp, msg, msglen, name, namelen)
375 const u_char *cp, *msg;
376 int msglen;
377 char *name;
378 int namelen;
379 {
380 int n, newlen;
381
382 if ((n = dn_expand(msg, cp + msglen, cp, name, namelen)) < 0)
383 return (NULL);
384 newlen = strlen(name);
385 if (newlen == 0 || name[newlen - 1] != '.') {
386 if (newlen + 1 >= namelen) /*%< Lack space for final dot */
387 return (NULL);
388 else
389 strcpy(name + newlen, ".");
390 }
391 return (cp + n);
392 }
393
394 /* XXX: the rest of these functions need to become length-limited, too. */
395
396 const u_char *
397 p_fqname(const u_char *cp, const u_char *msg, FILE *file) {
398 char name[MAXDNAME];
399 const u_char *n;
400
401 n = p_fqnname(cp, msg, MAXCDNAME, name, sizeof name);
402 if (n == NULL)
403 return (NULL);
404 fputs(name, file);
405 return (n);
406 }
407
408 /*%
409 * Names of RR classes and qclasses. Classes and qclasses are the same, except
410 * that C_ANY is a qclass but not a class. (You can ask for records of class
411 * C_ANY, but you can't have any records of that class in the database.)
412 */
413 const struct res_sym __p_class_syms[] = {
414 {C_IN, "IN", (char *)0},
415 {C_CHAOS, "CH", (char *)0},
416 {C_CHAOS, "CHAOS", (char *)0},
417 {C_HS, "HS", (char *)0},
418 {C_HS, "HESIOD", (char *)0},
419 {C_ANY, "ANY", (char *)0},
420 {C_NONE, "NONE", (char *)0},
421 {C_IN, (char *)0, (char *)0}
422 };
423
424 /*%
425 * Names of message sections.
426 */
427 const struct res_sym __p_default_section_syms[] = {
428 {ns_s_qd, "QUERY", (char *)0},
429 {ns_s_an, "ANSWER", (char *)0},
430 {ns_s_ns, "AUTHORITY", (char *)0},
431 {ns_s_ar, "ADDITIONAL", (char *)0},
432 {0, (char *)0, (char *)0}
433 };
434
435 const struct res_sym __p_update_section_syms[] = {
436 {S_ZONE, "ZONE", (char *)0},
437 {S_PREREQ, "PREREQUISITE", (char *)0},
438 {S_UPDATE, "UPDATE", (char *)0},
439 {S_ADDT, "ADDITIONAL", (char *)0},
440 {0, (char *)0, (char *)0}
441 };
442
443 const struct res_sym __p_key_syms[] = {
444 {NS_ALG_MD5RSA, "RSA", "RSA KEY with MD5 hash"},
445 {NS_ALG_DH, "DH", "Diffie Hellman"},
446 {NS_ALG_DSA, "DSA", "Digital Signature Algorithm"},
447 {NS_ALG_EXPIRE_ONLY, "EXPIREONLY", "No algorithm"},
448 {NS_ALG_PRIVATE_OID, "PRIVATE", "Algorithm obtained from OID"},
449 {0, NULL, NULL}
450 };
451
452 const struct res_sym __p_cert_syms[] = {
453 {cert_t_pkix, "PKIX", "PKIX (X.509v3) Certificate"},
454 {cert_t_spki, "SPKI", "SPKI certificate"},
455 {cert_t_pgp, "PGP", "PGP certificate"},
456 {cert_t_url, "URL", "URL Private"},
457 {cert_t_oid, "OID", "OID Private"},
458 {0, NULL, NULL}
459 };
460
461 /*%
462 * Names of RR types and qtypes. Types and qtypes are the same, except
463 * that T_ANY is a qtype but not a type. (You can ask for records of type
464 * T_ANY, but you can't have any records of that type in the database.)
465 */
466 const struct res_sym __p_type_syms[] = {
467 {ns_t_a, "A", "address"},
468 {ns_t_ns, "NS", "name server"},
469 {ns_t_md, "MD", "mail destination (deprecated)"},
470 {ns_t_mf, "MF", "mail forwarder (deprecated)"},
471 {ns_t_cname, "CNAME", "canonical name"},
472 {ns_t_soa, "SOA", "start of authority"},
473 {ns_t_mb, "MB", "mailbox"},
474 {ns_t_mg, "MG", "mail group member"},
475 {ns_t_mr, "MR", "mail rename"},
476 {ns_t_null, "NULL", "null"},
477 {ns_t_wks, "WKS", "well-known service (deprecated)"},
478 {ns_t_ptr, "PTR", "domain name pointer"},
479 {ns_t_hinfo, "HINFO", "host information"},
480 {ns_t_minfo, "MINFO", "mailbox information"},
481 {ns_t_mx, "MX", "mail exchanger"},
482 {ns_t_txt, "TXT", "text"},
483 {ns_t_rp, "RP", "responsible person"},
484 {ns_t_afsdb, "AFSDB", "DCE or AFS server"},
485 {ns_t_x25, "X25", "X25 address"},
486 {ns_t_isdn, "ISDN", "ISDN address"},
487 {ns_t_rt, "RT", "router"},
488 {ns_t_nsap, "NSAP", "nsap address"},
489 {ns_t_nsap_ptr, "NSAP_PTR", "domain name pointer"},
490 {ns_t_sig, "SIG", "signature"},
491 {ns_t_key, "KEY", "key"},
492 {ns_t_px, "PX", "mapping information"},
493 {ns_t_gpos, "GPOS", "geographical position (withdrawn)"},
494 {ns_t_aaaa, "AAAA", "IPv6 address"},
495 {ns_t_loc, "LOC", "location"},
496 {ns_t_nxt, "NXT", "next valid name (unimplemented)"},
497 {ns_t_eid, "EID", "endpoint identifier (unimplemented)"},
498 {ns_t_nimloc, "NIMLOC", "NIMROD locator (unimplemented)"},
499 {ns_t_srv, "SRV", "server selection"},
500 {ns_t_atma, "ATMA", "ATM address (unimplemented)"},
501 {ns_t_naptr, "NAPTR", "naptr"},
502 {ns_t_kx, "KX", "key exchange"},
503 {ns_t_cert, "CERT", "certificate"},
504 {ns_t_a6, "A", "IPv6 address (experminental)"},
505 {ns_t_dname, "DNAME", "non-terminal redirection"},
506 {ns_t_opt, "OPT", "opt"},
507 {ns_t_apl, "apl", "apl"},
508 {ns_t_ds, "DS", "delegation signer"},
509 {ns_t_sshfp, "SSFP", "SSH fingerprint"},
510 {ns_t_ipseckey, "IPSECKEY", "IPSEC key"},
511 {ns_t_rrsig, "RRSIG", "rrsig"},
512 {ns_t_nsec, "NSEC", "nsec"},
513 {ns_t_dnskey, "DNSKEY", "DNS key"},
514 {ns_t_dhcid, "DHCID", "dynamic host configuration identifier"},
515 {ns_t_nsec3, "NSEC3", "nsec3"},
516 {ns_t_nsec3param, "NSEC3PARAM", "NSEC3 parameters"},
517 {ns_t_hip, "HIP", "host identity protocol"},
518 {ns_t_spf, "SPF", "sender policy framework"},
519 {ns_t_tkey, "TKEY", "tkey"},
520 {ns_t_tsig, "TSIG", "transaction signature"},
521 {ns_t_ixfr, "IXFR", "incremental zone transfer"},
522 {ns_t_axfr, "AXFR", "zone transfer"},
523 {ns_t_zxfr, "ZXFR", "compressed zone transfer"},
524 {ns_t_mailb, "MAILB", "mailbox-related data (deprecated)"},
525 {ns_t_maila, "MAILA", "mail agent (deprecated)"},
526 {ns_t_naptr, "NAPTR", "URN Naming Authority"},
527 {ns_t_kx, "KX", "Key Exchange"},
528 {ns_t_cert, "CERT", "Certificate"},
529 {ns_t_a6, "A6", "IPv6 Address"},
530 {ns_t_dname, "DNAME", "dname"},
531 {ns_t_sink, "SINK", "Kitchen Sink (experimental)"},
532 {ns_t_opt, "OPT", "EDNS Options"},
533 {ns_t_any, "ANY", "\"any\""},
534 {ns_t_dlv, "DLV", "DNSSEC look-aside validation"},
535 {0, NULL, NULL}
536 };
537
538 /*%
539 * Names of DNS rcodes.
540 */
541 const struct res_sym __p_rcode_syms[] = {
542 {ns_r_noerror, "NOERROR", "no error"},
543 {ns_r_formerr, "FORMERR", "format error"},
544 {ns_r_servfail, "SERVFAIL", "server failed"},
545 {ns_r_nxdomain, "NXDOMAIN", "no such domain name"},
546 {ns_r_notimpl, "NOTIMP", "not implemented"},
547 {ns_r_refused, "REFUSED", "refused"},
548 {ns_r_yxdomain, "YXDOMAIN", "domain name exists"},
549 {ns_r_yxrrset, "YXRRSET", "rrset exists"},
550 {ns_r_nxrrset, "NXRRSET", "rrset doesn't exist"},
551 {ns_r_notauth, "NOTAUTH", "not authoritative"},
552 {ns_r_notzone, "NOTZONE", "Not in zone"},
553 {ns_r_max, "", ""},
554 {ns_r_badsig, "BADSIG", "bad signature"},
555 {ns_r_badkey, "BADKEY", "bad key"},
556 {ns_r_badtime, "BADTIME", "bad time"},
557 {0, NULL, NULL}
558 };
559
560 int
561 sym_ston(const struct res_sym *syms, const char *name, int *success) {
562 for ((void)NULL; syms->name != 0; syms++) {
563 if (strcasecmp (name, syms->name) == 0) {
564 if (success)
565 *success = 1;
566 return (syms->number);
567 }
568 }
569 if (success)
570 *success = 0;
571 return (syms->number); /*%< The default value. */
572 }
573
574 const char *
575 sym_ntos(const struct res_sym *syms, int number, int *success) {
576 char *unname = sym_ntos_unname;
577
578 for ((void)NULL; syms->name != 0; syms++) {
579 if (number == syms->number) {
580 if (success)
581 *success = 1;
582 return (syms->name);
583 }
584 }
585
586 sprintf(unname, "%d", number); /*%< XXX nonreentrant */
587 if (success)
588 *success = 0;
589 return (unname);
590 }
591
592 const char *
593 sym_ntop(const struct res_sym *syms, int number, int *success) {
594 char *unname = sym_ntop_unname;
595
596 for ((void)NULL; syms->name != 0; syms++) {
597 if (number == syms->number) {
598 if (success)
599 *success = 1;
600 return (syms->humanname);
601 }
602 }
603 sprintf(unname, "%d", number); /*%< XXX nonreentrant */
604 if (success)
605 *success = 0;
606 return (unname);
607 }
608
609 /*%
610 * Return a string for the type.
611 */
612 const char *
613 p_type(int type) {
614 int success;
615 const char *result;
616 static char typebuf[20];
617
618 result = sym_ntos(__p_type_syms, type, &success);
619 if (success)
620 return (result);
621 if (type < 0 || type > 0xffff)
622 return ("BADTYPE");
623 sprintf(typebuf, "TYPE%d", type);
624 return (typebuf);
625 }
626
627 /*%
628 * Return a string for the type.
629 */
630 const char *
631 p_section(int section, int opcode) {
632 const struct res_sym *symbols;
633
634 switch (opcode) {
635 case ns_o_update:
636 symbols = __p_update_section_syms;
637 break;
638 default:
639 symbols = __p_default_section_syms;
640 break;
641 }
642 return (sym_ntos(symbols, section, (int *)0));
643 }
644
645 /*%
646 * Return a mnemonic for class.
647 */
648 const char *
649 p_class(int class) {
650 int success;
651 const char *result;
652 static char classbuf[20];
653
654 result = sym_ntos(__p_class_syms, class, &success);
655 if (success)
656 return (result);
657 if (class < 0 || class > 0xffff)
658 return ("BADCLASS");
659 sprintf(classbuf, "CLASS%d", class);
660 return (classbuf);
661 }
662
663 /*%
664 * Return a mnemonic for an option
665 */
666 const char *
667 p_option(u_long option) {
668 char *nbuf = p_option_nbuf;
669
670 switch (option) {
671 case RES_INIT: return "init";
672 case RES_DEBUG: return "debug";
673 case RES_AAONLY: return "aaonly(unimpl)";
674 case RES_USEVC: return "usevc";
675 case RES_PRIMARY: return "primry(unimpl)";
676 case RES_IGNTC: return "igntc";
677 case RES_RECURSE: return "recurs";
678 case RES_DEFNAMES: return "defnam";
679 case RES_STAYOPEN: return "styopn";
680 case RES_DNSRCH: return "dnsrch";
681 case RES_INSECURE1: return "insecure1";
682 case RES_INSECURE2: return "insecure2";
683 case RES_NOALIASES: return "noaliases";
684 case RES_USE_INET6: return "inet6";
685 #ifdef RES_USE_EDNS0 /*%< KAME extension */
686 case RES_USE_EDNS0: return "edns0";
687 case RES_NSID: return "nsid";
688 #endif
689 #ifdef RES_USE_DNAME
690 case RES_USE_DNAME: return "dname";
691 #endif
692 #ifdef RES_USE_DNSSEC
693 case RES_USE_DNSSEC: return "dnssec";
694 #endif
695 #ifdef RES_NOTLDQUERY
696 case RES_NOTLDQUERY: return "no-tld-query";
697 #endif
698 #ifdef RES_NO_NIBBLE2
699 case RES_NO_NIBBLE2: return "no-nibble2";
700 #endif
701 /* XXX nonreentrant */
702 default: sprintf(nbuf, "?0x%lx?", (u_long)option);
703 return (nbuf);
704 }
705 }
706
707 /*%
708 * Return a mnemonic for a time to live.
709 */
710 const char *
711 p_time(u_int32_t value) {
712 char *nbuf = p_time_nbuf;
713
714 if (ns_format_ttl(value, nbuf, sizeof nbuf) < 0)
715 sprintf(nbuf, "%u", value);
716 return (nbuf);
717 }
718
719 /*%
720 * Return a string for the rcode.
721 */
722 const char *
723 p_rcode(int rcode) {
724 return (sym_ntos(__p_rcode_syms, rcode, (int *)0));
725 }
726
727 /*%
728 * Return a string for a res_sockaddr_union.
729 */
730 const char *
731 p_sockun(union res_sockaddr_union u, char *buf, size_t size) {
732 char ret[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:123.123.123.123"];
733
734 switch (u.sin.sin_family) {
735 case AF_INET:
736 inet_ntop(AF_INET, &u.sin.sin_addr, ret, sizeof ret);
737 break;
738 #ifdef HAS_INET6_STRUCTS
739 case AF_INET6:
740 inet_ntop(AF_INET6, &u.sin6.sin6_addr, ret, sizeof ret);
741 break;
742 #endif
743 default:
744 sprintf(ret, "[af%d]", u.sin.sin_family);
745 break;
746 }
747 if (size > 0U) {
748 strncpy(buf, ret, size - 1);
749 buf[size - 1] = '0';
750 }
751 return (buf);
752 }
753
754 /*%
755 * routines to convert between on-the-wire RR format and zone file format.
756 * Does not contain conversion to/from decimal degrees; divide or multiply
757 * by 60*60*1000 for that.
758 */
759
760 static unsigned int poweroften[10] = {1, 10, 100, 1000, 10000, 100000,
761 1000000,10000000,100000000,1000000000};
762
763 /*% takes an XeY precision/size value, returns a string representation. */
764 static const char *
765 precsize_ntoa(prec)
766 u_int8_t prec;
767 {
768 char *retbuf = precsize_ntoa_retbuf;
769 unsigned long val;
770 int mantissa, exponent;
771
772 mantissa = (int)((prec >> 4) & 0x0f) % 10;
773 exponent = (int)((prec >> 0) & 0x0f) % 10;
774
775 val = mantissa * poweroften[exponent];
776
777 (void) sprintf(retbuf, "%lu.%.2lu", val/100, val%100);
778 return (retbuf);
779 }
780
781 /*% converts ascii size/precision X * 10**Y(cm) to 0xXY. moves pointer. */
782 static u_int8_t
783 precsize_aton(const char **strptr) {
784 unsigned int mval = 0, cmval = 0;
785 u_int8_t retval = 0;
786 const char *cp;
787 int exponent;
788 int mantissa;
789
790 cp = *strptr;
791
792 while (isdigit((unsigned char)*cp))
793 mval = mval * 10 + (*cp++ - '0');
794
795 if (*cp == '.') { /*%< centimeters */
796 cp++;
797 if (isdigit((unsigned char)*cp)) {
798 cmval = (*cp++ - '0') * 10;
799 if (isdigit((unsigned char)*cp)) {
800 cmval += (*cp++ - '0');
801 }
802 }
803 }
804 cmval = (mval * 100) + cmval;
805
806 for (exponent = 0; exponent < 9; exponent++)
807 if (cmval < poweroften[exponent+1])
808 break;
809
810 mantissa = cmval / poweroften[exponent];
811 if (mantissa > 9)
812 mantissa = 9;
813
814 retval = (mantissa << 4) | exponent;
815
816 *strptr = cp;
817
818 return (retval);
819 }
820
821 /*% converts ascii lat/lon to unsigned encoded 32-bit number. moves pointer. */
822 static u_int32_t
823 latlon2ul(const char **latlonstrptr, int *which) {
824 const char *cp;
825 u_int32_t retval;
826 int deg = 0, min = 0, secs = 0, secsfrac = 0;
827
828 cp = *latlonstrptr;
829
830 while (isdigit((unsigned char)*cp))
831 deg = deg * 10 + (*cp++ - '0');
832
833 while (isspace((unsigned char)*cp))
834 cp++;
835
836 if (!(isdigit((unsigned char)*cp)))
837 goto fndhemi;
838
839 while (isdigit((unsigned char)*cp))
840 min = min * 10 + (*cp++ - '0');
841
842 while (isspace((unsigned char)*cp))
843 cp++;
844
845 if (!(isdigit((unsigned char)*cp)))
846 goto fndhemi;
847
848 while (isdigit((unsigned char)*cp))
849 secs = secs * 10 + (*cp++ - '0');
850
851 if (*cp == '.') { /*%< decimal seconds */
852 cp++;
853 if (isdigit((unsigned char)*cp)) {
854 secsfrac = (*cp++ - '0') * 100;
855 if (isdigit((unsigned char)*cp)) {
856 secsfrac += (*cp++ - '0') * 10;
857 if (isdigit((unsigned char)*cp)) {
858 secsfrac += (*cp++ - '0');
859 }
860 }
861 }
862 }
863
864 while (!isspace((unsigned char)*cp)) /*%< if any trailing garbage */
865 cp++;
866
867 while (isspace((unsigned char)*cp))
868 cp++;
869
870 fndhemi:
871 switch (*cp) {
872 case 'N': case 'n':
873 case 'E': case 'e':
874 retval = ((unsigned)1<<31)
875 + (((((deg * 60) + min) * 60) + secs) * 1000)
876 + secsfrac;
877 break;
878 case 'S': case 's':
879 case 'W': case 'w':
880 retval = ((unsigned)1<<31)
881 - (((((deg * 60) + min) * 60) + secs) * 1000)
882 - secsfrac;
883 break;
884 default:
885 retval = 0; /*%< invalid value -- indicates error */
886 break;
887 }
888
889 switch (*cp) {
890 case 'N': case 'n':
891 case 'S': case 's':
892 *which = 1; /*%< latitude */
893 break;
894 case 'E': case 'e':
895 case 'W': case 'w':
896 *which = 2; /*%< longitude */
897 break;
898 default:
899 *which = 0; /*%< error */
900 break;
901 }
902
903 cp++; /*%< skip the hemisphere */
904 while (!isspace((unsigned char)*cp)) /*%< if any trailing garbage */
905 cp++;
906
907 while (isspace((unsigned char)*cp)) /*%< move to next field */
908 cp++;
909
910 *latlonstrptr = cp;
911
912 return (retval);
913 }
914
915 /*%
916 * converts a zone file representation in a string to an RDATA on-the-wire
917 * representation. */
918 int
919 loc_aton(ascii, binary)
920 const char *ascii;
921 u_char *binary;
922 {
923 const char *cp, *maxcp;
924 u_char *bcp;
925
926 u_int32_t latit = 0, longit = 0, alt = 0;
927 u_int32_t lltemp1 = 0, lltemp2 = 0;
928 int altmeters = 0, altfrac = 0, altsign = 1;
929 u_int8_t hp = 0x16; /*%< default = 1e6 cm = 10000.00m = 10km */
930 u_int8_t vp = 0x13; /*%< default = 1e3 cm = 10.00m */
931 u_int8_t siz = 0x12; /*%< default = 1e2 cm = 1.00m */
932 int which1 = 0, which2 = 0;
933
934 cp = ascii;
935 maxcp = cp + strlen(ascii);
936
937 lltemp1 = latlon2ul(&cp, &which1);
938
939 lltemp2 = latlon2ul(&cp, &which2);
940
941 switch (which1 + which2) {
942 case 3: /*%< 1 + 2, the only valid combination */
943 if ((which1 == 1) && (which2 == 2)) { /*%< normal case */
944 latit = lltemp1;
945 longit = lltemp2;
946 } else if ((which1 == 2) && (which2 == 1)) { /*%< reversed */
947 longit = lltemp1;
948 latit = lltemp2;
949 } else { /*%< some kind of brokenness */
950 return (0);
951 }
952 break;
953 default: /*%< we didn't get one of each */
954 return (0);
955 }
956
957 /* altitude */
958 if (*cp == '-') {
959 altsign = -1;
960 cp++;
961 }
962
963 if (*cp == '+')
964 cp++;
965
966 while (isdigit((unsigned char)*cp))
967 altmeters = altmeters * 10 + (*cp++ - '0');
968
969 if (*cp == '.') { /*%< decimal meters */
970 cp++;
971 if (isdigit((unsigned char)*cp)) {
972 altfrac = (*cp++ - '0') * 10;
973 if (isdigit((unsigned char)*cp)) {
974 altfrac += (*cp++ - '0');
975 }
976 }
977 }
978
979 alt = (10000000 + (altsign * (altmeters * 100 + altfrac)));
980
981 while (!isspace((unsigned char)*cp) && (cp < maxcp)) /*%< if trailing garbage or m */
982 cp++;
983
984 while (isspace((unsigned char)*cp) && (cp < maxcp))
985 cp++;
986
987 if (cp >= maxcp)
988 goto defaults;
989
990 siz = precsize_aton(&cp);
991
992 while (!isspace((unsigned char)*cp) && (cp < maxcp)) /*%< if trailing garbage or m */
993 cp++;
994
995 while (isspace((unsigned char)*cp) && (cp < maxcp))
996 cp++;
997
998 if (cp >= maxcp)
999 goto defaults;
1000
1001 hp = precsize_aton(&cp);
1002
1003 while (!isspace((unsigned char)*cp) && (cp < maxcp)) /*%< if trailing garbage or m */
1004 cp++;
1005
1006 while (isspace((unsigned char)*cp) && (cp < maxcp))
1007 cp++;
1008
1009 if (cp >= maxcp)
1010 goto defaults;
1011
1012 vp = precsize_aton(&cp);
1013
1014 defaults:
1015
1016 bcp = binary;
1017 *bcp++ = (u_int8_t) 0; /*%< version byte */
1018 *bcp++ = siz;
1019 *bcp++ = hp;
1020 *bcp++ = vp;
1021 PUTLONG(latit,bcp);
1022 PUTLONG(longit,bcp);
1023 PUTLONG(alt,bcp);
1024
1025 return (16); /*%< size of RR in octets */
1026 }
1027
1028 /*% takes an on-the-wire LOC RR and formats it in a human readable format. */
1029 const char *
1030 loc_ntoa(binary, ascii)
1031 const u_char *binary;
1032 char *ascii;
1033 {
1034 static const char *error = "?";
1035 static char tmpbuf[sizeof
1036 "1000 60 60.000 N 1000 60 60.000 W -12345678.00m 90000000.00m 90000000.00m 90000000.00m"];
1037 const u_char *cp = binary;
1038
1039 int latdeg, latmin, latsec, latsecfrac;
1040 int longdeg, longmin, longsec, longsecfrac;
1041 char northsouth, eastwest;
1042 const char *altsign;
1043 int altmeters, altfrac;
1044
1045 const u_int32_t referencealt = 100000 * 100;
1046
1047 int32_t latval, longval, altval;
1048 u_int32_t templ;
1049 u_int8_t sizeval, hpval, vpval, versionval;
1050
1051 char *sizestr, *hpstr, *vpstr;
1052
1053 versionval = *cp++;
1054
1055 if (ascii == NULL)
1056 ascii = tmpbuf;
1057
1058 if (versionval) {
1059 (void) sprintf(ascii, "; error: unknown LOC RR version");
1060 return (ascii);
1061 }
1062
1063 sizeval = *cp++;
1064
1065 hpval = *cp++;
1066 vpval = *cp++;
1067
1068 GETLONG(templ, cp);
1069 latval = (templ - ((unsigned)1<<31));
1070
1071 GETLONG(templ, cp);
1072 longval = (templ - ((unsigned)1<<31));
1073
1074 GETLONG(templ, cp);
1075 if (templ < referencealt) { /*%< below WGS 84 spheroid */
1076 altval = referencealt - templ;
1077 altsign = "-";
1078 } else {
1079 altval = templ - referencealt;
1080 altsign = "";
1081 }
1082
1083 if (latval < 0) {
1084 northsouth = 'S';
1085 latval = -latval;
1086 } else
1087 northsouth = 'N';
1088
1089 latsecfrac = latval % 1000;
1090 latval = latval / 1000;
1091 latsec = latval % 60;
1092 latval = latval / 60;
1093 latmin = latval % 60;
1094 latval = latval / 60;
1095 latdeg = latval;
1096
1097 if (longval < 0) {
1098 eastwest = 'W';
1099 longval = -longval;
1100 } else
1101 eastwest = 'E';
1102
1103 longsecfrac = longval % 1000;
1104 longval = longval / 1000;
1105 longsec = longval % 60;
1106 longval = longval / 60;
1107 longmin = longval % 60;
1108 longval = longval / 60;
1109 longdeg = longval;
1110
1111 altfrac = altval % 100;
1112 altmeters = (altval / 100);
1113
1114 sizestr = strdup(precsize_ntoa(sizeval));
1115 hpstr = strdup(precsize_ntoa(hpval));
1116 vpstr = strdup(precsize_ntoa(vpval));
1117
1118 sprintf(ascii,
1119 "%d %.2d %.2d.%.3d %c %d %.2d %.2d.%.3d %c %s%d.%.2dm %sm %sm %sm",
1120 latdeg, latmin, latsec, latsecfrac, northsouth,
1121 longdeg, longmin, longsec, longsecfrac, eastwest,
1122 altsign, altmeters, altfrac,
1123 (sizestr != NULL) ? sizestr : error,
1124 (hpstr != NULL) ? hpstr : error,
1125 (vpstr != NULL) ? vpstr : error);
1126
1127 if (sizestr != NULL)
1128 free(sizestr);
1129 if (hpstr != NULL)
1130 free(hpstr);
1131 if (vpstr != NULL)
1132 free(vpstr);
1133
1134 return (ascii);
1135 }
1136
1137
1138 /*% Return the number of DNS hierarchy levels in the name. */
1139 int
1140 dn_count_labels(const char *name) {
1141 int i, len, count;
1142
1143 len = strlen(name);
1144 for (i = 0, count = 0; i < len; i++) {
1145 /* XXX need to check for \. or use named's nlabels(). */
1146 if (name[i] == '.')
1147 count++;
1148 }
1149
1150 /* don't count initial wildcard */
1151 if (name[0] == '*')
1152 if (count)
1153 count--;
1154
1155 /* don't count the null label for root. */
1156 /* if terminating '.' not found, must adjust */
1157 /* count to include last label */
1158 if (len > 0 && name[len-1] != '.')
1159 count++;
1160 return (count);
1161 }
1162
1163 /*%
1164 * Make dates expressed in seconds-since-Jan-1-1970 easy to read.
1165 * SIG records are required to be printed like this, by the Secure DNS RFC.
1166 */
1167 char *
1168 p_secstodate (u_long secs) {
1169 char *output = p_secstodate_output;
1170 time_t clock = secs;
1171 struct tm *time;
1172 #ifdef HAVE_TIME_R
1173 struct tm res;
1174
1175 time = gmtime_r(&clock, &res);
1176 #else
1177 time = gmtime(&clock);
1178 #endif
1179 time->tm_year += 1900;
1180 time->tm_mon += 1;
1181 sprintf(output, "%04d%02d%02d%02d%02d%02d",
1182 time->tm_year, time->tm_mon, time->tm_mday,
1183 time->tm_hour, time->tm_min, time->tm_sec);
1184 return (output);
1185 }
1186
1187 u_int16_t
1188 res_nametoclass(const char *buf, int *successp) {
1189 unsigned long result;
1190 char *endptr;
1191 int success;
1192
1193 result = sym_ston(__p_class_syms, buf, &success);
1194 if (success)
1195 goto done;
1196
1197 if (strncasecmp(buf, "CLASS", 5) != 0 ||
1198 !isdigit((unsigned char)buf[5]))
1199 goto done;
1200 errno = 0;
1201 result = strtoul(buf + 5, &endptr, 10);
1202 if (errno == 0 && *endptr == '\0' && result <= 0xffffU)
1203 success = 1;
1204 done:
1205 if (successp)
1206 *successp = success;
1207 return (result);
1208 }
1209
1210 u_int16_t
1211 res_nametotype(const char *buf, int *successp) {
1212 unsigned long result;
1213 char *endptr;
1214 int success;
1215
1216 result = sym_ston(__p_type_syms, buf, &success);
1217 if (success)
1218 goto done;
1219
1220 if (strncasecmp(buf, "type", 4) != 0 ||
1221 !isdigit((unsigned char)buf[4]))
1222 goto done;
1223 errno = 0;
1224 result = strtoul(buf + 4, &endptr, 10);
1225 if (errno == 0 && *endptr == '\0' && result <= 0xffffU)
1226 success = 1;
1227 done:
1228 if (successp)
1229 *successp = success;
1230 return (result);
1231 }
1232
1233 /*! \file */
NetBSD on the FriendlyARM MINI2440