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Add BIND 9.2.4rc7.
[dragonfly.git] / contrib / bind-9.2.4rc7 / lib / bind / resolv / res_debug.c
blob956e2c5cd43609e0a283137eb0c845473ad02a6a
1 /*
2 * Copyright (c) 1985
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
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
54 /*
55 * Portions Copyright (c) 1995 by International Business Machines, Inc.
56 *
57 * International Business Machines, Inc. (hereinafter called IBM) grants
58 * permission under its copyrights to use, copy, modify, and distribute this
59 * Software with or without fee, provided that the above copyright notice and
60 * all paragraphs of this notice appear in all copies, and that the name of IBM
61 * not be used in connection with the marketing of any product incorporating
62 * the Software or modifications thereof, without specific, written prior
63 * permission.
64 *
65 * To the extent it has a right to do so, IBM grants an immunity from suit
66 * under its patents, if any, for the use, sale or manufacture of products to
67 * the extent that such products are used for performing Domain Name System
68 * dynamic updates in TCP/IP networks by means of the Software. No immunity is
69 * granted for any product per se or for any other function of any product.
70 *
71 * THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES,
72 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
73 * PARTICULAR PURPOSE. IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL,
74 * DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING
75 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN
76 * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES.
77 */
78
79 /*
80 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
81 * Portions Copyright (c) 1996-1999 by Internet Software Consortium.
82 *
83 * Permission to use, copy, modify, and distribute this software for any
84 * purpose with or without fee is hereby granted, provided that the above
85 * copyright notice and this permission notice appear in all copies.
86 *
87 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
88 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
89 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
90 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
91 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
92 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
93 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
94 */
95
96 #if defined(LIBC_SCCS) && !defined(lint)
97 static const char sccsid[] = "@(#)res_debug.c 8.1 (Berkeley) 6/4/93";
98 static const char rcsid[] = "$Id: res_debug.c,v 1.3.2.10 2004/07/28 20:06:58 marka Exp $";
99 #endif /* LIBC_SCCS and not lint */
100
101 #include "port_before.h"
102
103 #include <sys/types.h>
104 #include <sys/param.h>
105 #include <sys/socket.h>
106
107 #include <netinet/in.h>
108 #include <arpa/inet.h>
109 #include <arpa/nameser.h>
110
111 #include <ctype.h>
112 #include <errno.h>
113 #include <math.h>
114 #include <netdb.h>
115 #include <resolv.h>
116 #include <stdio.h>
117 #include <stdlib.h>
118 #include <string.h>
119 #include <time.h>
120
121 #include "port_after.h"
122
123 #ifdef SPRINTF_CHAR
124 # define SPRINTF(x) strlen(sprintf/**/x)
125 #else
126 # define SPRINTF(x) sprintf x
127 #endif
128
129 extern const char *_res_opcodes[];
130 extern const char *_res_sectioncodes[];
131
132 /*
133 * Print the current options.
134 */
135 void
136 fp_resstat(const res_state statp, FILE *file) {
137 u_long mask;
138
139 fprintf(file, ";; res options:");
140 for (mask = 1; mask != 0U; mask <<= 1)
141 if (statp->options & mask)
142 fprintf(file, " %s", p_option(mask));
143 putc('\n', file);
144 }
145
146 static void
147 do_section(const res_state statp,
148 ns_msg *handle, ns_sect section,
149 int pflag, FILE *file)
150 {
151 int n, sflag, rrnum;
152 static int buflen = 2048;
153 char *buf;
154 ns_opcode opcode;
155 ns_rr rr;
156
157 /*
158 * Print answer records.
159 */
160 sflag = (statp->pfcode & pflag);
161 if (statp->pfcode && !sflag)
162 return;
163
164 buf = malloc(buflen);
165 if (buf == NULL) {
166 fprintf(file, ";; memory allocation failure\n");
167 return;
168 }
169
170 opcode = (ns_opcode) ns_msg_getflag(*handle, ns_f_opcode);
171 rrnum = 0;
172 for (;;) {
173 if (ns_parserr(handle, section, rrnum, &rr)) {
174 if (errno != ENODEV)
175 fprintf(file, ";; ns_parserr: %s\n",
176 strerror(errno));
177 else if (rrnum > 0 && sflag != 0 &&
178 (statp->pfcode & RES_PRF_HEAD1))
179 putc('\n', file);
180 goto cleanup;
181 }
182 if (rrnum == 0 && sflag != 0 && (statp->pfcode & RES_PRF_HEAD1))
183 fprintf(file, ";; %s SECTION:\n",
184 p_section(section, opcode));
185 if (section == ns_s_qd)
186 fprintf(file, ";;\t%s, type = %s, class = %s\n",
187 ns_rr_name(rr),
188 p_type(ns_rr_type(rr)),
189 p_class(ns_rr_class(rr)));
190 else if (section == ns_s_ar && ns_rr_type(rr) == ns_t_opt) {
191 u_int32_t ttl = ns_rr_ttl(rr);
192 fprintf(file,
193 "; EDNS: version: %u, udp=%u, flags=%04x\n",
194 (ttl>>16)&0xff, ns_rr_class(rr), ttl&0xffff);
195 } else {
196 n = ns_sprintrr(handle, &rr, NULL, NULL,
197 buf, buflen);
198 if (n < 0) {
199 if (errno == ENOSPC) {
200 free(buf);
201 buf = NULL;
202 if (buflen < 131072)
203 buf = malloc(buflen += 1024);
204 if (buf == NULL) {
205 fprintf(file,
206 ";; memory allocation failure\n");
207 return;
208 }
209 continue;
210 }
211 fprintf(file, ";; ns_sprintrr: %s\n",
212 strerror(errno));
213 goto cleanup;
214 }
215 fputs(buf, file);
216 fputc('\n', file);
217 }
218 rrnum++;
219 }
220 cleanup:
221 if (buf != NULL)
222 free(buf);
223 }
224
225 /*
226 * Print the contents of a query.
227 * This is intended to be primarily a debugging routine.
228 */
229 void
230 res_pquery(const res_state statp, const u_char *msg, int len, FILE *file) {
231 ns_msg handle;
232 int qdcount, ancount, nscount, arcount;
233 u_int opcode, rcode, id;
234
235 if (ns_initparse(msg, len, &handle) < 0) {
236 fprintf(file, ";; ns_initparse: %s\n", strerror(errno));
237 return;
238 }
239 opcode = ns_msg_getflag(handle, ns_f_opcode);
240 rcode = ns_msg_getflag(handle, ns_f_rcode);
241 id = ns_msg_id(handle);
242 qdcount = ns_msg_count(handle, ns_s_qd);
243 ancount = ns_msg_count(handle, ns_s_an);
244 nscount = ns_msg_count(handle, ns_s_ns);
245 arcount = ns_msg_count(handle, ns_s_ar);
246
247 /*
248 * Print header fields.
249 */
250 if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEADX) || rcode)
251 fprintf(file,
252 ";; ->>HEADER<<- opcode: %s, status: %s, id: %d\n",
253 _res_opcodes[opcode], p_rcode(rcode), id);
254 if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEADX))
255 putc(';', file);
256 if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEAD2)) {
257 fprintf(file, "; flags:");
258 if (ns_msg_getflag(handle, ns_f_qr))
259 fprintf(file, " qr");
260 if (ns_msg_getflag(handle, ns_f_aa))
261 fprintf(file, " aa");
262 if (ns_msg_getflag(handle, ns_f_tc))
263 fprintf(file, " tc");
264 if (ns_msg_getflag(handle, ns_f_rd))
265 fprintf(file, " rd");
266 if (ns_msg_getflag(handle, ns_f_ra))
267 fprintf(file, " ra");
268 if (ns_msg_getflag(handle, ns_f_z))
269 fprintf(file, " ??");
270 if (ns_msg_getflag(handle, ns_f_ad))
271 fprintf(file, " ad");
272 if (ns_msg_getflag(handle, ns_f_cd))
273 fprintf(file, " cd");
274 }
275 if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEAD1)) {
276 fprintf(file, "; %s: %d",
277 p_section(ns_s_qd, opcode), qdcount);
278 fprintf(file, ", %s: %d",
279 p_section(ns_s_an, opcode), ancount);
280 fprintf(file, ", %s: %d",
281 p_section(ns_s_ns, opcode), nscount);
282 fprintf(file, ", %s: %d",
283 p_section(ns_s_ar, opcode), arcount);
284 }
285 if ((!statp->pfcode) || (statp->pfcode &
286 (RES_PRF_HEADX | RES_PRF_HEAD2 | RES_PRF_HEAD1))) {
287 putc('\n',file);
288 }
289 /*
290 * Print the various sections.
291 */
292 do_section(statp, &handle, ns_s_qd, RES_PRF_QUES, file);
293 do_section(statp, &handle, ns_s_an, RES_PRF_ANS, file);
294 do_section(statp, &handle, ns_s_ns, RES_PRF_AUTH, file);
295 do_section(statp, &handle, ns_s_ar, RES_PRF_ADD, file);
296 if (qdcount == 0 && ancount == 0 &&
297 nscount == 0 && arcount == 0)
298 putc('\n', file);
299 }
300
301 const u_char *
302 p_cdnname(const u_char *cp, const u_char *msg, int len, FILE *file) {
303 char name[MAXDNAME];
304 int n;
305
306 if ((n = dn_expand(msg, msg + len, cp, name, sizeof name)) < 0)
307 return (NULL);
308 if (name[0] == '\0')
309 putc('.', file);
310 else
311 fputs(name, file);
312 return (cp + n);
313 }
314
315 const u_char *
316 p_cdname(const u_char *cp, const u_char *msg, FILE *file) {
317 return (p_cdnname(cp, msg, PACKETSZ, file));
318 }
319
320 /* Return a fully-qualified domain name from a compressed name (with
321 length supplied). */
322
323 const u_char *
324 p_fqnname(cp, msg, msglen, name, namelen)
325 const u_char *cp, *msg;
326 int msglen;
327 char *name;
328 int namelen;
329 {
330 int n, newlen;
331
332 if ((n = dn_expand(msg, cp + msglen, cp, name, namelen)) < 0)
333 return (NULL);
334 newlen = strlen(name);
335 if (newlen == 0 || name[newlen - 1] != '.') {
336 if (newlen + 1 >= namelen) /* Lack space for final dot */
337 return (NULL);
338 else
339 strcpy(name + newlen, ".");
340 }
341 return (cp + n);
342 }
343
344 /* XXX: the rest of these functions need to become length-limited, too. */
345
346 const u_char *
347 p_fqname(const u_char *cp, const u_char *msg, FILE *file) {
348 char name[MAXDNAME];
349 const u_char *n;
350
351 n = p_fqnname(cp, msg, MAXCDNAME, name, sizeof name);
352 if (n == NULL)
353 return (NULL);
354 fputs(name, file);
355 return (n);
356 }
357
358 /*
359 * Names of RR classes and qclasses. Classes and qclasses are the same, except
360 * that C_ANY is a qclass but not a class. (You can ask for records of class
361 * C_ANY, but you can't have any records of that class in the database.)
362 */
363 const struct res_sym __p_class_syms[] = {
364 {C_IN, "IN", (char *)0},
365 {C_CHAOS, "CH", (char *)0},
366 {C_CHAOS, "CHAOS", (char *)0},
367 {C_HS, "HS", (char *)0},
368 {C_HS, "HESIOD", (char *)0},
369 {C_ANY, "ANY", (char *)0},
370 {C_NONE, "NONE", (char *)0},
371 {C_IN, (char *)0, (char *)0}
372 };
373
374 /*
375 * Names of message sections.
376 */
377 const struct res_sym __p_default_section_syms[] = {
378 {ns_s_qd, "QUERY", (char *)0},
379 {ns_s_an, "ANSWER", (char *)0},
380 {ns_s_ns, "AUTHORITY", (char *)0},
381 {ns_s_ar, "ADDITIONAL", (char *)0},
382 {0, (char *)0, (char *)0}
383 };
384
385 const struct res_sym __p_update_section_syms[] = {
386 {S_ZONE, "ZONE", (char *)0},
387 {S_PREREQ, "PREREQUISITE", (char *)0},
388 {S_UPDATE, "UPDATE", (char *)0},
389 {S_ADDT, "ADDITIONAL", (char *)0},
390 {0, (char *)0, (char *)0}
391 };
392
393 const struct res_sym __p_key_syms[] = {
394 {NS_ALG_MD5RSA, "RSA", "RSA KEY with MD5 hash"},
395 {NS_ALG_DH, "DH", "Diffie Hellman"},
396 {NS_ALG_DSA, "DSA", "Digital Signature Algorithm"},
397 {NS_ALG_EXPIRE_ONLY, "EXPIREONLY", "No algorithm"},
398 {NS_ALG_PRIVATE_OID, "PRIVATE", "Algorithm obtained from OID"},
399 {0, NULL, NULL}
400 };
401
402 const struct res_sym __p_cert_syms[] = {
403 {cert_t_pkix, "PKIX", "PKIX (X.509v3) Certificate"},
404 {cert_t_spki, "SPKI", "SPKI certificate"},
405 {cert_t_pgp, "PGP", "PGP certificate"},
406 {cert_t_url, "URL", "URL Private"},
407 {cert_t_oid, "OID", "OID Private"},
408 {0, NULL, NULL}
409 };
410
411 /*
412 * Names of RR types and qtypes. Types and qtypes are the same, except
413 * that T_ANY is a qtype but not a type. (You can ask for records of type
414 * T_ANY, but you can't have any records of that type in the database.)
415 */
416 const struct res_sym __p_type_syms[] = {
417 {ns_t_a, "A", "address"},
418 {ns_t_ns, "NS", "name server"},
419 {ns_t_md, "MD", "mail destination (deprecated)"},
420 {ns_t_mf, "MF", "mail forwarder (deprecated)"},
421 {ns_t_cname, "CNAME", "canonical name"},
422 {ns_t_soa, "SOA", "start of authority"},
423 {ns_t_mb, "MB", "mailbox"},
424 {ns_t_mg, "MG", "mail group member"},
425 {ns_t_mr, "MR", "mail rename"},
426 {ns_t_null, "NULL", "null"},
427 {ns_t_wks, "WKS", "well-known service (deprecated)"},
428 {ns_t_ptr, "PTR", "domain name pointer"},
429 {ns_t_hinfo, "HINFO", "host information"},
430 {ns_t_minfo, "MINFO", "mailbox information"},
431 {ns_t_mx, "MX", "mail exchanger"},
432 {ns_t_txt, "TXT", "text"},
433 {ns_t_rp, "RP", "responsible person"},
434 {ns_t_afsdb, "AFSDB", "DCE or AFS server"},
435 {ns_t_x25, "X25", "X25 address"},
436 {ns_t_isdn, "ISDN", "ISDN address"},
437 {ns_t_rt, "RT", "router"},
438 {ns_t_nsap, "NSAP", "nsap address"},
439 {ns_t_nsap_ptr, "NSAP_PTR", "domain name pointer"},
440 {ns_t_sig, "SIG", "signature"},
441 {ns_t_key, "KEY", "key"},
442 {ns_t_px, "PX", "mapping information"},
443 {ns_t_gpos, "GPOS", "geographical position (withdrawn)"},
444 {ns_t_aaaa, "AAAA", "IPv6 address"},
445 {ns_t_loc, "LOC", "location"},
446 {ns_t_nxt, "NXT", "next valid name (unimplemented)"},
447 {ns_t_eid, "EID", "endpoint identifier (unimplemented)"},
448 {ns_t_nimloc, "NIMLOC", "NIMROD locator (unimplemented)"},
449 {ns_t_srv, "SRV", "server selection"},
450 {ns_t_atma, "ATMA", "ATM address (unimplemented)"},
451 {ns_t_tkey, "TKEY", "tkey"},
452 {ns_t_tsig, "TSIG", "transaction signature"},
453 {ns_t_ixfr, "IXFR", "incremental zone transfer"},
454 {ns_t_axfr, "AXFR", "zone transfer"},
455 {ns_t_zxfr, "ZXFR", "compressed zone transfer"},
456 {ns_t_mailb, "MAILB", "mailbox-related data (deprecated)"},
457 {ns_t_maila, "MAILA", "mail agent (deprecated)"},
458 {ns_t_naptr, "NAPTR", "URN Naming Authority"},
459 {ns_t_kx, "KX", "Key Exchange"},
460 {ns_t_cert, "CERT", "Certificate"},
461 {ns_t_a6, "A6", "IPv6 Address"},
462 {ns_t_dname, "DNAME", "dname"},
463 {ns_t_sink, "SINK", "Kitchen Sink (experimental)"},
464 {ns_t_opt, "OPT", "EDNS Options"},
465 {ns_t_any, "ANY", "\"any\""},
466 {0, NULL, NULL}
467 };
468
469 /*
470 * Names of DNS rcodes.
471 */
472 const struct res_sym __p_rcode_syms[] = {
473 {ns_r_noerror, "NOERROR", "no error"},
474 {ns_r_formerr, "FORMERR", "format error"},
475 {ns_r_servfail, "SERVFAIL", "server failed"},
476 {ns_r_nxdomain, "NXDOMAIN", "no such domain name"},
477 {ns_r_notimpl, "NOTIMP", "not implemented"},
478 {ns_r_refused, "REFUSED", "refused"},
479 {ns_r_yxdomain, "YXDOMAIN", "domain name exists"},
480 {ns_r_yxrrset, "YXRRSET", "rrset exists"},
481 {ns_r_nxrrset, "NXRRSET", "rrset doesn't exist"},
482 {ns_r_notauth, "NOTAUTH", "not authoritative"},
483 {ns_r_notzone, "NOTZONE", "Not in zone"},
484 {ns_r_max, "", ""},
485 {ns_r_badsig, "BADSIG", "bad signature"},
486 {ns_r_badkey, "BADKEY", "bad key"},
487 {ns_r_badtime, "BADTIME", "bad time"},
488 {0, NULL, NULL}
489 };
490
491 int
492 sym_ston(const struct res_sym *syms, const char *name, int *success) {
493 for ((void)NULL; syms->name != 0; syms++) {
494 if (strcasecmp (name, syms->name) == 0) {
495 if (success)
496 *success = 1;
497 return (syms->number);
498 }
499 }
500 if (success)
501 *success = 0;
502 return (syms->number); /* The default value. */
503 }
504
505 const char *
506 sym_ntos(const struct res_sym *syms, int number, int *success) {
507 static char unname[20];
508
509 for ((void)NULL; syms->name != 0; syms++) {
510 if (number == syms->number) {
511 if (success)
512 *success = 1;
513 return (syms->name);
514 }
515 }
516
517 sprintf(unname, "%d", number); /* XXX nonreentrant */
518 if (success)
519 *success = 0;
520 return (unname);
521 }
522
523 const char *
524 sym_ntop(const struct res_sym *syms, int number, int *success) {
525 static char unname[20];
526
527 for ((void)NULL; syms->name != 0; syms++) {
528 if (number == syms->number) {
529 if (success)
530 *success = 1;
531 return (syms->humanname);
532 }
533 }
534 sprintf(unname, "%d", number); /* XXX nonreentrant */
535 if (success)
536 *success = 0;
537 return (unname);
538 }
539
540 /*
541 * Return a string for the type.
542 */
543 const char *
544 p_type(int type) {
545 int success;
546 const char *result;
547 static char typebuf[20];
548
549 result = sym_ntos(__p_type_syms, type, &success);
550 if (success)
551 return (result);
552 if (type < 0 || type > 0xffff)
553 return ("BADTYPE");
554 sprintf(typebuf, "TYPE%d", type);
555 return (typebuf);
556 }
557
558 /*
559 * Return a string for the type.
560 */
561 const char *
562 p_section(int section, int opcode) {
563 const struct res_sym *symbols;
564
565 switch (opcode) {
566 case ns_o_update:
567 symbols = __p_update_section_syms;
568 break;
569 default:
570 symbols = __p_default_section_syms;
571 break;
572 }
573 return (sym_ntos(symbols, section, (int *)0));
574 }
575
576 /*
577 * Return a mnemonic for class.
578 */
579 const char *
580 p_class(int class) {
581 int success;
582 const char *result;
583 static char classbuf[20];
584
585 result = sym_ntos(__p_class_syms, class, &success);
586 if (success)
587 return (result);
588 if (class < 0 || class > 0xffff)
589 return ("BADCLASS");
590 sprintf(classbuf, "CLASS%d", class);
591 return (classbuf);
592 }
593
594 /*
595 * Return a mnemonic for an option
596 */
597 const char *
598 p_option(u_long option) {
599 static char nbuf[40];
600
601 switch (option) {
602 case RES_INIT: return "init";
603 case RES_DEBUG: return "debug";
604 case RES_AAONLY: return "aaonly(unimpl)";
605 case RES_USEVC: return "usevc";
606 case RES_PRIMARY: return "primry(unimpl)";
607 case RES_IGNTC: return "igntc";
608 case RES_RECURSE: return "recurs";
609 case RES_DEFNAMES: return "defnam";
610 case RES_STAYOPEN: return "styopn";
611 case RES_DNSRCH: return "dnsrch";
612 case RES_INSECURE1: return "insecure1";
613 case RES_INSECURE2: return "insecure2";
614 case RES_NOALIASES: return "noaliases";
615 case RES_USE_INET6: return "inet6";
616 #ifdef RES_USE_EDNS0 /* KAME extension */
617 case RES_USE_EDNS0: return "edns0";
618 #endif
619 #ifdef RES_USE_DNAME
620 case RES_USE_DNAME: return "dname";
621 #endif
622 #ifdef RES_USE_DNSSEC
623 case RES_USE_DNSSEC: return "dnssec";
624 #endif
625 #ifdef RES_NOTLDQUERY
626 case RES_NOTLDQUERY: return "no-tld-query";
627 #endif
628 #ifdef RES_NO_NIBBLE2
629 case RES_NO_NIBBLE2: return "no-nibble2";
630 #endif
631 /* XXX nonreentrant */
632 default: sprintf(nbuf, "?0x%lx?", (u_long)option);
633 return (nbuf);
634 }
635 }
636
637 /*
638 * Return a mnemonic for a time to live.
639 */
640 const char *
641 p_time(u_int32_t value) {
642 static char nbuf[40]; /* XXX nonreentrant */
643
644 if (ns_format_ttl(value, nbuf, sizeof nbuf) < 0)
645 sprintf(nbuf, "%u", value);
646 return (nbuf);
647 }
648
649 /*
650 * Return a string for the rcode.
651 */
652 const char *
653 p_rcode(int rcode) {
654 return (sym_ntos(__p_rcode_syms, rcode, (int *)0));
655 }
656
657 /*
658 * Return a string for a res_sockaddr_union.
659 */
660 const char *
661 p_sockun(union res_sockaddr_union u, char *buf, size_t size) {
662 char ret[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:123.123.123.123"];
663
664 switch (u.sin.sin_family) {
665 case AF_INET:
666 inet_ntop(AF_INET, &u.sin.sin_addr, ret, sizeof ret);
667 break;
668 #ifdef HAS_INET6_STRUCTS
669 case AF_INET6:
670 inet_ntop(AF_INET6, &u.sin6.sin6_addr, ret, sizeof ret);
671 break;
672 #endif
673 default:
674 sprintf(ret, "[af%d]", u.sin.sin_family);
675 break;
676 }
677 if (size > 0U) {
678 strncpy(buf, ret, size - 1);
679 buf[size - 1] = '0';
680 }
681 return (buf);
682 }
683
684 /*
685 * routines to convert between on-the-wire RR format and zone file format.
686 * Does not contain conversion to/from decimal degrees; divide or multiply
687 * by 60*60*1000 for that.
688 */
689
690 static unsigned int poweroften[10] = {1, 10, 100, 1000, 10000, 100000,
691 1000000,10000000,100000000,1000000000};
692
693 /* takes an XeY precision/size value, returns a string representation. */
694 static const char *
695 precsize_ntoa(prec)
696 u_int8_t prec;
697 {
698 static char retbuf[sizeof "90000000.00"]; /* XXX nonreentrant */
699 unsigned long val;
700 int mantissa, exponent;
701
702 mantissa = (int)((prec >> 4) & 0x0f) % 10;
703 exponent = (int)((prec >> 0) & 0x0f) % 10;
704
705 val = mantissa * poweroften[exponent];
706
707 (void) sprintf(retbuf, "%lu.%.2lu", val/100, val%100);
708 return (retbuf);
709 }
710
711 /* converts ascii size/precision X * 10**Y(cm) to 0xXY. moves pointer. */
712 static u_int8_t
713 precsize_aton(const char **strptr) {
714 unsigned int mval = 0, cmval = 0;
715 u_int8_t retval = 0;
716 const char *cp;
717 int exponent;
718 int mantissa;
719
720 cp = *strptr;
721
722 while (isdigit((unsigned char)*cp))
723 mval = mval * 10 + (*cp++ - '0');
724
725 if (*cp == '.') { /* centimeters */
726 cp++;
727 if (isdigit((unsigned char)*cp)) {
728 cmval = (*cp++ - '0') * 10;
729 if (isdigit((unsigned char)*cp)) {
730 cmval += (*cp++ - '0');
731 }
732 }
733 }
734 cmval = (mval * 100) + cmval;
735
736 for (exponent = 0; exponent < 9; exponent++)
737 if (cmval < poweroften[exponent+1])
738 break;
739
740 mantissa = cmval / poweroften[exponent];
741 if (mantissa > 9)
742 mantissa = 9;
743
744 retval = (mantissa << 4) | exponent;
745
746 *strptr = cp;
747
748 return (retval);
749 }
750
751 /* converts ascii lat/lon to unsigned encoded 32-bit number. moves pointer. */
752 static u_int32_t
753 latlon2ul(const char **latlonstrptr, int *which) {
754 const char *cp;
755 u_int32_t retval;
756 int deg = 0, min = 0, secs = 0, secsfrac = 0;
757
758 cp = *latlonstrptr;
759
760 while (isdigit((unsigned char)*cp))
761 deg = deg * 10 + (*cp++ - '0');
762
763 while (isspace((unsigned char)*cp))
764 cp++;
765
766 if (!(isdigit((unsigned char)*cp)))
767 goto fndhemi;
768
769 while (isdigit((unsigned char)*cp))
770 min = min * 10 + (*cp++ - '0');
771
772 while (isspace((unsigned char)*cp))
773 cp++;
774
775 if (!(isdigit((unsigned char)*cp)))
776 goto fndhemi;
777
778 while (isdigit((unsigned char)*cp))
779 secs = secs * 10 + (*cp++ - '0');
780
781 if (*cp == '.') { /* decimal seconds */
782 cp++;
783 if (isdigit((unsigned char)*cp)) {
784 secsfrac = (*cp++ - '0') * 100;
785 if (isdigit((unsigned char)*cp)) {
786 secsfrac += (*cp++ - '0') * 10;
787 if (isdigit((unsigned char)*cp)) {
788 secsfrac += (*cp++ - '0');
789 }
790 }
791 }
792 }
793
794 while (!isspace((unsigned char)*cp)) /* if any trailing garbage */
795 cp++;
796
797 while (isspace((unsigned char)*cp))
798 cp++;
799
800 fndhemi:
801 switch (*cp) {
802 case 'N': case 'n':
803 case 'E': case 'e':
804 retval = ((unsigned)1<<31)
805 + (((((deg * 60) + min) * 60) + secs) * 1000)
806 + secsfrac;
807 break;
808 case 'S': case 's':
809 case 'W': case 'w':
810 retval = ((unsigned)1<<31)
811 - (((((deg * 60) + min) * 60) + secs) * 1000)
812 - secsfrac;
813 break;
814 default:
815 retval = 0; /* invalid value -- indicates error */
816 break;
817 }
818
819 switch (*cp) {
820 case 'N': case 'n':
821 case 'S': case 's':
822 *which = 1; /* latitude */
823 break;
824 case 'E': case 'e':
825 case 'W': case 'w':
826 *which = 2; /* longitude */
827 break;
828 default:
829 *which = 0; /* error */
830 break;
831 }
832
833 cp++; /* skip the hemisphere */
834
835 while (!isspace((unsigned char)*cp)) /* if any trailing garbage */
836 cp++;
837
838 while (isspace((unsigned char)*cp)) /* move to next field */
839 cp++;
840
841 *latlonstrptr = cp;
842
843 return (retval);
844 }
845
846 /* converts a zone file representation in a string to an RDATA on-the-wire
847 * representation. */
848 int
849 loc_aton(ascii, binary)
850 const char *ascii;
851 u_char *binary;
852 {
853 const char *cp, *maxcp;
854 u_char *bcp;
855
856 u_int32_t latit = 0, longit = 0, alt = 0;
857 u_int32_t lltemp1 = 0, lltemp2 = 0;
858 int altmeters = 0, altfrac = 0, altsign = 1;
859 u_int8_t hp = 0x16; /* default = 1e6 cm = 10000.00m = 10km */
860 u_int8_t vp = 0x13; /* default = 1e3 cm = 10.00m */
861 u_int8_t siz = 0x12; /* default = 1e2 cm = 1.00m */
862 int which1 = 0, which2 = 0;
863
864 cp = ascii;
865 maxcp = cp + strlen(ascii);
866
867 lltemp1 = latlon2ul(&cp, &which1);
868
869 lltemp2 = latlon2ul(&cp, &which2);
870
871 switch (which1 + which2) {
872 case 3: /* 1 + 2, the only valid combination */
873 if ((which1 == 1) && (which2 == 2)) { /* normal case */
874 latit = lltemp1;
875 longit = lltemp2;
876 } else if ((which1 == 2) && (which2 == 1)) { /* reversed */
877 longit = lltemp1;
878 latit = lltemp2;
879 } else { /* some kind of brokenness */
880 return (0);
881 }
882 break;
883 default: /* we didn't get one of each */
884 return (0);
885 }
886
887 /* altitude */
888 if (*cp == '-') {
889 altsign = -1;
890 cp++;
891 }
892
893 if (*cp == '+')
894 cp++;
895
896 while (isdigit((unsigned char)*cp))
897 altmeters = altmeters * 10 + (*cp++ - '0');
898
899 if (*cp == '.') { /* decimal meters */
900 cp++;
901 if (isdigit((unsigned char)*cp)) {
902 altfrac = (*cp++ - '0') * 10;
903 if (isdigit((unsigned char)*cp)) {
904 altfrac += (*cp++ - '0');
905 }
906 }
907 }
908
909 alt = (10000000 + (altsign * (altmeters * 100 + altfrac)));
910
911 while (!isspace((unsigned char)*cp) && (cp < maxcp)) /* if trailing garbage or m */
912 cp++;
913
914 while (isspace((unsigned char)*cp) && (cp < maxcp))
915 cp++;
916
917 if (cp >= maxcp)
918 goto defaults;
919
920 siz = precsize_aton(&cp);
921
922 while (!isspace((unsigned char)*cp) && (cp < maxcp)) /* if trailing garbage or m */
923 cp++;
924
925 while (isspace((unsigned char)*cp) && (cp < maxcp))
926 cp++;
927
928 if (cp >= maxcp)
929 goto defaults;
930
931 hp = precsize_aton(&cp);
932
933 while (!isspace((unsigned char)*cp) && (cp < maxcp)) /* if trailing garbage or m */
934 cp++;
935
936 while (isspace((unsigned char)*cp) && (cp < maxcp))
937 cp++;
938
939 if (cp >= maxcp)
940 goto defaults;
941
942 vp = precsize_aton(&cp);
943
944 defaults:
945
946 bcp = binary;
947 *bcp++ = (u_int8_t) 0; /* version byte */
948 *bcp++ = siz;
949 *bcp++ = hp;
950 *bcp++ = vp;
951 PUTLONG(latit,bcp);
952 PUTLONG(longit,bcp);
953 PUTLONG(alt,bcp);
954
955 return (16); /* size of RR in octets */
956 }
957
958 /* takes an on-the-wire LOC RR and formats it in a human readable format. */
959 const char *
960 loc_ntoa(binary, ascii)
961 const u_char *binary;
962 char *ascii;
963 {
964 static const char *error = "?";
965 static char tmpbuf[sizeof
966 "1000 60 60.000 N 1000 60 60.000 W -12345678.00m 90000000.00m 90000000.00m 90000000.00m"];
967 const u_char *cp = binary;
968
969 int latdeg, latmin, latsec, latsecfrac;
970 int longdeg, longmin, longsec, longsecfrac;
971 char northsouth, eastwest;
972 const char *altsign;
973 int altmeters, altfrac;
974
975 const u_int32_t referencealt = 100000 * 100;
976
977 int32_t latval, longval, altval;
978 u_int32_t templ;
979 u_int8_t sizeval, hpval, vpval, versionval;
980
981 char *sizestr, *hpstr, *vpstr;
982
983 versionval = *cp++;
984
985 if (ascii == NULL)
986 ascii = tmpbuf;
987
988 if (versionval) {
989 (void) sprintf(ascii, "; error: unknown LOC RR version");
990 return (ascii);
991 }
992
993 sizeval = *cp++;
994
995 hpval = *cp++;
996 vpval = *cp++;
997
998 GETLONG(templ, cp);
999 latval = (templ - ((unsigned)1<<31));
1000
1001 GETLONG(templ, cp);
1002 longval = (templ - ((unsigned)1<<31));
1003
1004 GETLONG(templ, cp);
1005 if (templ < referencealt) { /* below WGS 84 spheroid */
1006 altval = referencealt - templ;
1007 altsign = "-";
1008 } else {
1009 altval = templ - referencealt;
1010 altsign = "";
1011 }
1012
1013 if (latval < 0) {
1014 northsouth = 'S';
1015 latval = -latval;
1016 } else
1017 northsouth = 'N';
1018
1019 latsecfrac = latval % 1000;
1020 latval = latval / 1000;
1021 latsec = latval % 60;
1022 latval = latval / 60;
1023 latmin = latval % 60;
1024 latval = latval / 60;
1025 latdeg = latval;
1026
1027 if (longval < 0) {
1028 eastwest = 'W';
1029 longval = -longval;
1030 } else
1031 eastwest = 'E';
1032
1033 longsecfrac = longval % 1000;
1034 longval = longval / 1000;
1035 longsec = longval % 60;
1036 longval = longval / 60;
1037 longmin = longval % 60;
1038 longval = longval / 60;
1039 longdeg = longval;
1040
1041 altfrac = altval % 100;
1042 altmeters = (altval / 100);
1043
1044 sizestr = strdup(precsize_ntoa(sizeval));
1045 hpstr = strdup(precsize_ntoa(hpval));
1046 vpstr = strdup(precsize_ntoa(vpval));
1047
1048 sprintf(ascii,
1049 "%d %.2d %.2d.%.3d %c %d %.2d %.2d.%.3d %c %s%d.%.2dm %sm %sm %sm",
1050 latdeg, latmin, latsec, latsecfrac, northsouth,
1051 longdeg, longmin, longsec, longsecfrac, eastwest,
1052 altsign, altmeters, altfrac,
1053 (sizestr != NULL) ? sizestr : error,
1054 (hpstr != NULL) ? hpstr : error,
1055 (vpstr != NULL) ? vpstr : error);
1056
1057 if (sizestr != NULL)
1058 free(sizestr);
1059 if (hpstr != NULL)
1060 free(hpstr);
1061 if (vpstr != NULL)
1062 free(vpstr);
1063
1064 return (ascii);
1065 }
1066
1067
1068 /* Return the number of DNS hierarchy levels in the name. */
1069 int
1070 dn_count_labels(const char *name) {
1071 int i, len, count;
1072
1073 len = strlen(name);
1074 for (i = 0, count = 0; i < len; i++) {
1075 /* XXX need to check for \. or use named's nlabels(). */
1076 if (name[i] == '.')
1077 count++;
1078 }
1079
1080 /* don't count initial wildcard */
1081 if (name[0] == '*')
1082 if (count)
1083 count--;
1084
1085 /* don't count the null label for root. */
1086 /* if terminating '.' not found, must adjust */
1087 /* count to include last label */
1088 if (len > 0 && name[len-1] != '.')
1089 count++;
1090 return (count);
1091 }
1092
1093
1094 /*
1095 * Make dates expressed in seconds-since-Jan-1-1970 easy to read.
1096 * SIG records are required to be printed like this, by the Secure DNS RFC.
1097 */
1098 char *
1099 p_secstodate (u_long secs) {
1100 /* XXX nonreentrant */
1101 static char output[15]; /* YYYYMMDDHHMMSS and null */
1102 time_t clock = secs;
1103 struct tm *time;
1104 #ifdef HAVE_TIME_R
1105 struct tm res;
1106
1107 time = gmtime_r(&clock, &res);
1108 #else
1109 time = gmtime(&clock);
1110 #endif
1111 time->tm_year += 1900;
1112 time->tm_mon += 1;
1113 sprintf(output, "%04d%02d%02d%02d%02d%02d",
1114 time->tm_year, time->tm_mon, time->tm_mday,
1115 time->tm_hour, time->tm_min, time->tm_sec);
1116 return (output);
1117 }
1118
1119 u_int16_t
1120 res_nametoclass(const char *buf, int *successp) {
1121 unsigned long result;
1122 char *endptr;
1123 int success;
1124
1125 result = sym_ston(__p_class_syms, buf, &success);
1126 if (success)
1127 goto done;
1128
1129 if (strncasecmp(buf, "CLASS", 5) != 0 ||
1130 !isdigit((unsigned char)buf[5]))
1131 goto done;
1132 errno = 0;
1133 result = strtoul(buf + 5, &endptr, 10);
1134 if (errno == 0 && *endptr == '\0' && result <= 0xffffU)
1135 success = 1;
1136 done:
1137 if (successp)
1138 *successp = success;
1139 return (result);
1140 }
1141
1142 u_int16_t
1143 res_nametotype(const char *buf, int *successp) {
1144 unsigned long result;
1145 char *endptr;
1146 int success;
1147
1148 result = sym_ston(__p_type_syms, buf, &success);
1149 if (success)
1150 goto done;
1151
1152 if (strncasecmp(buf, "type", 4) != 0 ||
1153 !isdigit((unsigned char)buf[4]))
1154 goto done;
1155 errno = 0;
1156 result = strtoul(buf + 4, &endptr, 10);
1157 if (errno == 0 && *endptr == '\0' && result <= 0xffffU)
1158 success = 1;
1159 done:
1160 if (successp)
1161 *successp = success;
1162 return (result);
1163 }
DragonFly BSD