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source: rtems/cpukit/libnetworking/libc/res_debug.c @ 39f13cb

4.104.115

Last change on this file since 39f13cb was 39f13cb, checked in by Ralf Corsepius <ralf.corsepius@…>, on 03/27/10 at 04:00:53
Add HAVE_STRINGS_H for better POSIX compliance.
Property mode set to `100644`
File size: 24.6 KB

Line
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	* Portions Copyright (c) 1996 by Internet Software Consortium.
81	*
82	* Permission to use, copy, modify, and distribute this software for any
83	* purpose with or without fee is hereby granted, provided that the above
84	* copyright notice and this permission notice appear in all copies.
85	*
86	* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
87	* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
88	* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
89	* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
90	* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
91	* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
92	* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
93	* SOFTWARE.
94	*/
95
96	#if HAVE_CONFIG_H
97	#include "config.h"
98	#endif
99
100	#include <inttypes.h>
101
102	#include <sys/types.h>
103	#include <sys/param.h>
104	#include <sys/socket.h>
105
106	#include <netinet/in.h>
107	#include <arpa/inet.h>
108	#include <arpa/nameser.h>
109
110	#include <ctype.h>
111	#include <errno.h>
112	#include <math.h>
113	#include <netdb.h>
114	#include <resolv.h>
115	#include <stdio.h>
116	#include <stdlib.h>
117	#include <string.h>
118	#ifdef HAVE_STRINGS_H
119	#include <strings.h>
120	#endif
121	#include <time.h>
122
123	#define SPRINTF(x) sprintf x
124
125	extern const char *_res_opcodes[];
126	extern const char *_res_resultcodes[];
127	extern const char *_res_sectioncodes[];
128
129	/*
130	* Print the current options.
131	*/
132	void
133	fp_resstat(struct __res_state statp, FILE file) {
134	u_long mask;
135
136	fprintf(file, ";; res options:");
137	if (!statp)
138	statp = &_res;
139	for (mask = 1; mask != 0; mask <<= 1)
140	if (statp->options & mask)
141	fprintf(file, " %s", p_option(mask));
142	putc('\n', file);
143	}
144
145	static void
146	do_section(ns_msg handle, ns_sect section, int pflag, FILE file) {
147	int n, sflag, rrnum;
148	char buf[2048]; /* XXX need to malloc */
149	ns_opcode opcode;
150	ns_rr rr;
151
152	/*
153	* Print answer records.
154	*/
155	sflag = (_res.pfcode & pflag);
156	if (_res.pfcode && !sflag)
157	return;
158
159	opcode = ns_msg_getflag(*handle, ns_f_opcode);
160	rrnum = 0;
161	for (;;) {
162	if (ns_parserr(handle, section, rrnum, &rr)) {
163	if (errno != ENODEV)
164	fprintf(file, ";; ns_parserr: %s\n",
165	strerror(errno));
166	else if (rrnum > 0 && sflag != 0 &&
167	(_res.pfcode & RES_PRF_HEAD1))
168	putc('\n', file);
169	return;
170	}
171	if (rrnum == 0 && sflag != 0 && (_res.pfcode & RES_PRF_HEAD1))
172	fprintf(file, ";; %s SECTION:\n",
173	p_section(section, opcode));
174	if (section == ns_s_qd)
175	fprintf(file, ";;\t%s, type = %s, class = %s\n",
176	ns_rr_name(rr),
177	p_type(ns_rr_type(rr)),
178	p_class(ns_rr_class(rr)));
179	else {
180	n = ns_sprintrr(handle, &rr, NULL, NULL,
181	buf, sizeof buf);
182	if (n < 0) {
183	fprintf(file, ";; ns_sprintrr: %s\n",
184	strerror(errno));
185	return;
186	}
187	fputs(buf, file);
188	fputc('\n', file);
189	}
190	rrnum++;
191	}
192	}
193
194	void
195	p_query(const u_char *msg) {
196	fp_query(msg, stdout);
197	}
198
199	void
200	fp_query(const u_char msg, FILE file) {
201	fp_nquery(msg, PACKETSZ, file);
202	}
203
204	/*
205	* Print the contents of a query.
206	* This is intended to be primarily a debugging routine.
207	*/
208	void
209	fp_nquery(const u_char msg, int len, FILE file) {
210	ns_msg handle;
211	int qdcount, ancount, nscount, arcount;
212	u_int opcode, rcode, id;
213
214	if ((_res.options & RES_INIT) == 0 && res_init() == -1)
215	return;
216
217	if (ns_initparse(msg, len, &handle) < 0) {
218	fprintf(file, ";; ns_initparse: %s\n", strerror(errno));
219	return;
220	}
221	opcode = ns_msg_getflag(handle, ns_f_opcode);
222	rcode = ns_msg_getflag(handle, ns_f_rcode);
223	id = ns_msg_id(handle);
224	qdcount = ns_msg_count(handle, ns_s_qd);
225	ancount = ns_msg_count(handle, ns_s_an);
226	nscount = ns_msg_count(handle, ns_s_ns);
227	arcount = ns_msg_count(handle, ns_s_ar);
228
229	/*
230	* Print header fields.
231	*/
232	if ((!_res.pfcode) \|\| (_res.pfcode & RES_PRF_HEADX) \|\| rcode)
233	fprintf(file,
234	";; ->>HEADER<<- opcode: %s, status: %s, id: %d\n",
235	_res_opcodes[opcode], _res_resultcodes[rcode], id);
236	if ((!_res.pfcode) \|\| (_res.pfcode & RES_PRF_HEADX))
237	putc(';', file);
238	if ((!_res.pfcode) \|\| (_res.pfcode & RES_PRF_HEAD2)) {
239	fprintf(file, "; flags:");
240	if (ns_msg_getflag(handle, ns_f_qr))
241	fprintf(file, " qr");
242	if (ns_msg_getflag(handle, ns_f_aa))
243	fprintf(file, " aa");
244	if (ns_msg_getflag(handle, ns_f_tc))
245	fprintf(file, " tc");
246	if (ns_msg_getflag(handle, ns_f_rd))
247	fprintf(file, " rd");
248	if (ns_msg_getflag(handle, ns_f_ra))
249	fprintf(file, " ra");
250	if (ns_msg_getflag(handle, ns_f_z))
251	fprintf(file, " ??");
252	if (ns_msg_getflag(handle, ns_f_ad))
253	fprintf(file, " ad");
254	if (ns_msg_getflag(handle, ns_f_cd))
255	fprintf(file, " cd");
256	}
257	if ((!_res.pfcode) \|\| (_res.pfcode & RES_PRF_HEAD1)) {
258	fprintf(file, "; %s: %d",
259	p_section(ns_s_qd, opcode), qdcount);
260	fprintf(file, ", %s: %d",
261	p_section(ns_s_an, opcode), ancount);
262	fprintf(file, ", %s: %d",
263	p_section(ns_s_ns, opcode), nscount);
264	fprintf(file, ", %s: %d",
265	p_section(ns_s_ar, opcode), arcount);
266	}
267	if ((!_res.pfcode) \|\| (_res.pfcode &
268	(RES_PRF_HEADX \| RES_PRF_HEAD2 \| RES_PRF_HEAD1))) {
269	putc('\n',file);
270	}
271	/*
272	* Print the various sections.
273	*/
274	do_section(&handle, ns_s_qd, RES_PRF_QUES, file);
275	do_section(&handle, ns_s_an, RES_PRF_ANS, file);
276	do_section(&handle, ns_s_ns, RES_PRF_AUTH, file);
277	do_section(&handle, ns_s_ar, RES_PRF_ADD, file);
278	if (qdcount == 0 && ancount == 0 &&
279	nscount == 0 && arcount == 0)
280	putc('\n', file);
281	}
282
283	const u_char *
284	p_cdnname(const u_char cp, const u_char msg, int len, FILE *file) {
285	char name[MAXDNAME];
286	int n;
287
288	if ((n = dn_expand(msg, msg + len, cp, name, sizeof name)) < 0)
289	return (NULL);
290	if (name[0] == '\0')
291	putc('.', file);
292	else
293	fputs(name, file);
294	return (cp + n);
295	}
296
297	const u_char *
298	p_cdname(const u_char cp, const u_char msg, FILE *file) {
299	return (p_cdnname(cp, msg, PACKETSZ, file));
300	}
301
302	/* Return a fully-qualified domain name from a compressed name (with
303	length supplied). */
304
305	const u_char *
306	p_fqnname(
307	const u_char *cp,
308	const u_char *msg,
309	int msglen,
310	char *name,
311	int namelen)
312	{
313	int n, newlen;
314
315	if ((n = dn_expand(msg, cp + msglen, cp, name, namelen)) < 0)
316	return (NULL);
317	newlen = strlen(name);
318	if (newlen == 0 \|\| name[newlen - 1] != '.') {
319	if (newlen + 1 >= namelen) /* Lack space for final dot */
320	return (NULL);
321	else
322	strcpy(name + newlen, ".");
323	}
324	return (cp + n);
325	}
326
327	/* XXX: the rest of these functions need to become length-limited, too. */
328
329	const u_char *
330	p_fqname(const u_char cp, const u_char msg, FILE *file) {
331	char name[MAXDNAME];
332	const u_char *n;
333
334	n = p_fqnname(cp, msg, MAXCDNAME, name, sizeof name);
335	if (n == NULL)
336	return (NULL);
337	fputs(name, file);
338	return (n);
339	}
340
341	/*
342	* Names of RR classes and qclasses. Classes and qclasses are the same, except
343	* that C_ANY is a qclass but not a class. (You can ask for records of class
344	* C_ANY, but you can't have any records of that class in the database.)
345	*/
346	const struct res_sym __p_class_syms[] = {
347	{C_IN, "IN", NULL},
348	{C_CHAOS, "CHAOS", NULL},
349	{C_HS, "HS", NULL},
350	{C_HS, "HESIOD", NULL},
351	{C_ANY, "ANY", NULL},
352	{C_NONE, "NONE", NULL},
353	{C_IN, (char *)0, NULL}
354	};
355
356	/*
357	* Names of message sections.
358	*/
359	const struct res_sym __p_default_section_syms[] = {
360	{ns_s_qd, "QUERY", NULL},
361	{ns_s_an, "ANSWER", NULL},
362	{ns_s_ns, "AUTHORITY", NULL},
363	{ns_s_ar, "ADDITIONAL", NULL},
364	{0, (char *)0, NULL}
365	};
366
367	const struct res_sym __p_update_section_syms[] = {
368	{S_ZONE, "ZONE", NULL},
369	{S_PREREQ, "PREREQUISITE", NULL},
370	{S_UPDATE, "UPDATE", NULL},
371	{S_ADDT, "ADDITIONAL", NULL},
372	{0, (char *)0, NULL}
373	};
374
375	/*
376	* Names of RR types and qtypes. Types and qtypes are the same, except
377	* that T_ANY is a qtype but not a type. (You can ask for records of type
378	* T_ANY, but you can't have any records of that type in the database.)
379	*/
380	const struct res_sym __p_type_syms[] = {
381	{T_A, "A", "address"},
382	{T_NS, "NS", "name server"},
383	{T_MD, "MD", "mail destination (deprecated)"},
384	{T_MF, "MF", "mail forwarder (deprecated)"},
385	{T_CNAME, "CNAME", "canonical name"},
386	{T_SOA, "SOA", "start of authority"},
387	{T_MB, "MB", "mailbox"},
388	{T_MG, "MG", "mail group member"},
389	{T_MR, "MR", "mail rename"},
390	{T_NULL, "NULL", "null"},
391	{T_WKS, "WKS", "well-known service (deprecated)"},
392	{T_PTR, "PTR", "domain name pointer"},
393	{T_HINFO, "HINFO", "host information"},
394	{T_MINFO, "MINFO", "mailbox information"},
395	{T_MX, "MX", "mail exchanger"},
396	{T_TXT, "TXT", "text"},
397	{T_RP, "RP", "responsible person"},
398	{T_AFSDB, "AFSDB", "DCE or AFS server"},
399	{T_X25, "X25", "X25 address"},
400	{T_ISDN, "ISDN", "ISDN address"},
401	{T_RT, "RT", "router"},
402	{T_NSAP, "NSAP", "nsap address"},
403	{T_NSAP_PTR, "NSAP_PTR", "domain name pointer"},
404	{T_SIG, "SIG", "signature"},
405	{T_KEY, "KEY", "key"},
406	{T_PX, "PX", "mapping information"},
407	{T_GPOS, "GPOS", "geographical position (withdrawn)"},
408	{T_AAAA, "AAAA", "IPv6 address"},
409	{T_LOC, "LOC", "location"},
410	{T_NXT, "NXT", "next valid name (unimplemented)"},
411	{T_EID, "EID", "endpoint identifier (unimplemented)"},
412	{T_NIMLOC, "NIMLOC", "NIMROD locator (unimplemented)"},
413	{T_SRV, "SRV", "server selection"},
414	{T_ATMA, "ATMA", "ATM address (unimplemented)"},
415	{T_IXFR, "IXFR", "incremental zone transfer"},
416	{T_AXFR, "AXFR", "zone transfer"},
417	{T_MAILB, "MAILB", "mailbox-related data (deprecated)"},
418	{T_MAILA, "MAILA", "mail agent (deprecated)"},
419	{T_NAPTR, "NAPTR", "URN Naming Authority"},
420	{T_ANY, "ANY", "\"any\""},
421	{0, NULL, NULL}
422	};
423
424	int
425	sym_ston(const struct res_sym syms, const char name, int *success) {
426	for ((void)NULL; syms->name != 0; syms++) {
427	if (strcasecmp (name, syms->name) == 0) {
428	if (success)
429	*success = 1;
430	return (syms->number);
431	}
432	}
433	if (success)
434	*success = 0;
435	return (syms->number); /* The default value. */
436	}
437
438	const char *
439	sym_ntos(const struct res_sym syms, int number, int success) {
440	static char unname[20];
441
442	for ((void)NULL; syms->name != 0; syms++) {
443	if (number == syms->number) {
444	if (success)
445	*success = 1;
446	return (syms->name);
447	}
448	}
449
450	sprintf(unname, "%d", number);
451	if (success)
452	*success = 0;
453	return (unname);
454	}
455
456	const char *
457	sym_ntop(const struct res_sym syms, int number, int success) {
458	static char unname[20];
459
460	for ((void)NULL; syms->name != 0; syms++) {
461	if (number == syms->number) {
462	if (success)
463	*success = 1;
464	return (syms->humanname);
465	}
466	}
467	sprintf(unname, "%d", number);
468	if (success)
469	*success = 0;
470	return (unname);
471	}
472
473	/*
474	* Return a string for the type.
475	*/
476	const char *
477	p_type(int type) {
478	return (sym_ntos(__p_type_syms, type, (int *)0));
479	}
480
481	/*
482	* Return a string for the type.
483	*/
484	const char *
485	p_section(int section, int opcode) {
486	const struct res_sym *symbols;
487
488	switch (opcode) {
489	case ns_o_update:
490	symbols = __p_update_section_syms;
491	break;
492	default:
493	symbols = __p_default_section_syms;
494	break;
495	}
496	return (sym_ntos(symbols, section, (int *)0));
497	}
498
499	/*
500	* Return a mnemonic for class.
501	*/
502	const char *
503	p_class(int class) {
504	return (sym_ntos(__p_class_syms, class, (int *)0));
505	}
506
507	/*
508	* Return a mnemonic for an option
509	*/
510	const char *
511	p_option(u_long option) {
512	static char nbuf[40];
513
514	switch (option) {
515	case RES_INIT: return "init";
516	case RES_DEBUG: return "debug";
517	case RES_AAONLY: return "aaonly(unimpl)";
518	case RES_USEVC: return "usevc";
519	case RES_PRIMARY: return "primry(unimpl)";
520	case RES_IGNTC: return "igntc";
521	case RES_RECURSE: return "recurs";
522	case RES_DEFNAMES: return "defnam";
523	case RES_STAYOPEN: return "styopn";
524	case RES_DNSRCH: return "dnsrch";
525	case RES_INSECURE1: return "insecure1";
526	case RES_INSECURE2: return "insecure2";
527	default: sprintf(nbuf, "?0x%lx?", (u_long)option);
528	return (nbuf);
529	}
530	}
531
532	/*
533	* Return a mnemonic for a time to live.
534	*/
535	const char *
536	p_time(u_int32_t value) {
537	static char nbuf[40];
538
539	if (ns_format_ttl(value, nbuf, sizeof nbuf) < 0)
540	sprintf(nbuf, "%" PRIu32, (uint32_t) value);
541	return (nbuf);
542	}
543
544
545	/*
546	* routines to convert between on-the-wire RR format and zone file format.
547	* Does not contain conversion to/from decimal degrees; divide or multiply
548	* by 60601000 for that.
549	*/
550
551	static uint32_t poweroften[10] = {1, 10, 100, 1000, 10000, 100000,
552	1000000,10000000,100000000,1000000000};
553
554	/* takes an XeY precision/size value, returns a string representation. */
555	static const char *
556	precsize_ntoa(
557	u_int8_t prec)
558	{
559	static char retbuf[sizeof "90000000.00"];
560	unsigned long val;
561	uint32_t mantissa, exponent;
562
563	mantissa = (int)((prec >> 4) & 0x0f) % 10;
564	exponent = (int)((prec >> 0) & 0x0f) % 10;
565
566	val = mantissa * poweroften[exponent];
567
568	(void) sprintf(retbuf, "%ld.%.2ld", val/100, val%100);
569	return (retbuf);
570	}
571
572	/* converts ascii size/precision X * 10*Y(cm) to 0xXY. moves pointer. /
573	static u_int8_t
574	precsize_aton(
575	const char **strptr)
576	{
577	unsigned int mval = 0, cmval = 0;
578	u_int8_t retval = 0;
579	const char *cp;
580	int exponent;
581	int mantissa;
582
583	cp = *strptr;
584
585	while (isdigit((unsigned char)*cp))
586	mval = mval * 10 + (*cp++ - '0');
587
588	if (cp == '.') { / centimeters */
589	cp++;
590	if (isdigit((unsigned char)*cp)) {
591	cmval = (cp++ - '0') 10;
592	if (isdigit((unsigned char)*cp)) {
593	cmval += (*cp++ - '0');
594	}
595	}
596	}
597	cmval = (mval * 100) + cmval;
598
599	for (exponent = 0; exponent < 9; exponent++)
600	if (cmval < poweroften[exponent+1])
601	break;
602
603	mantissa = cmval / poweroften[exponent];
604	if (mantissa > 9)
605	mantissa = 9;
606
607	retval = (mantissa << 4) \| exponent;
608
609	*strptr = cp;
610
611	return (retval);
612	}
613
614	/* converts ascii lat/lon to unsigned encoded 32-bit number. moves pointer. */
615	static u_int32_t
616	latlon2ul(
617	char **latlonstrptr,
618	int *which )
619	{
620	char *cp;
621	u_int32_t retval;
622	int deg = 0, min = 0, secs = 0, secsfrac = 0;
623
624	cp = *latlonstrptr;
625
626	while (isdigit((unsigned char)*cp))
627	deg = deg * 10 + (*cp++ - '0');
628
629	while (isspace((unsigned char)*cp))
630	cp++;
631
632	if (!(isdigit((unsigned char)*cp)))
633	goto fndhemi;
634
635	while (isdigit((unsigned char)*cp))
636	min = min * 10 + (*cp++ - '0');
637
638	while (isspace((unsigned char)*cp))
639	cp++;
640
641	if (!(isdigit((unsigned char)*cp)))
642	goto fndhemi;
643
644	while (isdigit((unsigned char)*cp))
645	secs = secs * 10 + (*cp++ - '0');
646
647	if (cp == '.') { / decimal seconds */
648	cp++;
649	if (isdigit((unsigned char)*cp)) {
650	secsfrac = (cp++ - '0') 100;
651	if (isdigit((unsigned char)*cp)) {
652	secsfrac += (cp++ - '0') 10;
653	if (isdigit((unsigned char)*cp)) {
654	secsfrac += (*cp++ - '0');
655	}
656	}
657	}
658	}
659
660	while (!isspace((unsigned char)cp)) / if any trailing garbage */
661	cp++;
662
663	while (isspace((unsigned char)*cp))
664	cp++;
665
666	fndhemi:
667	switch (*cp) {
668	case 'N': case 'n':
669	case 'E': case 'e':
670	retval = ((u_int32_t)1<<31)
671	+ (((((deg * 60) + min) * 60) + secs) * 1000)
672	+ secsfrac;
673	break;
674	case 'S': case 's':
675	case 'W': case 'w':
676	retval = ((u_int32_t)1<<31)
677	- (((((deg * 60) + min) * 60) + secs) * 1000)
678	- secsfrac;
679	break;
680	default:
681	retval = 0; /* invalid value -- indicates error */
682	break;
683	}
684
685	switch (*cp) {
686	case 'N': case 'n':
687	case 'S': case 's':
688	which = 1; / latitude */
689	break;
690	case 'E': case 'e':
691	case 'W': case 'w':
692	which = 2; / longitude */
693	break;
694	default:
695	which = 0; / error */
696	break;
697	}
698
699	cp++; /* skip the hemisphere */
700
701	while (!isspace((unsigned char)cp)) / if any trailing garbage */
702	cp++;
703
704	while (isspace((unsigned char)cp)) / move to next field */
705	cp++;
706
707	*latlonstrptr = cp;
708
709	return (retval);
710	}
711
712	/* converts a zone file representation in a string to an RDATA on-the-wire
713	* representation. */
714	int
715	loc_aton(
716	const char *ascii,
717	u_char *binary)
718	{
719	const char cp, maxcp;
720	u_char *bcp;
721
722	u_int32_t latit = 0, longit = 0, alt = 0;
723	u_int32_t lltemp1 = 0, lltemp2 = 0;
724	int altmeters = 0, altfrac = 0, altsign = 1;
725	u_int8_t hp = 0x16; /* default = 1e6 cm = 10000.00m = 10km */
726	u_int8_t vp = 0x13; /* default = 1e3 cm = 10.00m */
727	u_int8_t siz = 0x12; /* default = 1e2 cm = 1.00m */
728	int which1 = 0, which2 = 0;
729
730	cp = ascii;
731	maxcp = cp + strlen(ascii);
732
733	lltemp1 = latlon2ul((char **)&cp, &which1);
734
735	lltemp2 = latlon2ul((char **)&cp, &which2);
736
737	switch (which1 + which2) {
738	case 3: /* 1 + 2, the only valid combination */
739	if ((which1 == 1) && (which2 == 2)) { /* normal case */
740	latit = lltemp1;
741	longit = lltemp2;
742	} else if ((which1 == 2) && (which2 == 1)) { /* reversed */
743	longit = lltemp1;
744	latit = lltemp2;
745	} else { /* some kind of brokenness */
746	return (0);
747	}
748	break;
749	default: /* we didn't get one of each */
750	return (0);
751	}
752
753	/* altitude */
754	if (*cp == '-') {
755	altsign = -1;
756	cp++;
757	}
758
759	if (*cp == '+')
760	cp++;
761
762	while (isdigit((unsigned char)*cp))
763	altmeters = altmeters * 10 + (*cp++ - '0');
764
765	if (cp == '.') { / decimal meters */
766	cp++;
767	if (isdigit((unsigned char)*cp)) {
768	altfrac = (cp++ - '0') 10;
769	if (isdigit((unsigned char)*cp)) {
770	altfrac += (*cp++ - '0');
771	}
772	}
773	}
774
775	alt = (10000000 + (altsign * (altmeters * 100 + altfrac)));
776
777	while (!isspace((unsigned char)cp) && (cp < maxcp)) / if trailing garbage or m */
778	cp++;
779
780	while (isspace((unsigned char)*cp) && (cp < maxcp))
781	cp++;
782
783	if (cp >= maxcp)
784	goto defaults;
785
786	siz = precsize_aton(&cp);
787
788	while (!isspace((unsigned char)cp) && (cp < maxcp)) / if trailing garbage or m */
789	cp++;
790
791	while (isspace((unsigned char)*cp) && (cp < maxcp))
792	cp++;
793
794	if (cp >= maxcp)
795	goto defaults;
796
797	hp = precsize_aton(&cp);
798
799	while (!isspace((unsigned char)cp) && (cp < maxcp)) / if trailing garbage or m */
800	cp++;
801
802	while (isspace((unsigned char)*cp) && (cp < maxcp))
803	cp++;
804
805	if (cp >= maxcp)
806	goto defaults;
807
808	vp = precsize_aton(&cp);
809
810	defaults:
811
812	bcp = binary;
813	bcp++ = (u_int8_t) 0; / version byte */
814	*bcp++ = siz;
815	*bcp++ = hp;
816	*bcp++ = vp;
817	PUTLONG(latit,bcp);
818	PUTLONG(longit,bcp);
819	PUTLONG(alt,bcp);
820
821	return (16); /* size of RR in octets */
822	}
823
824	/* takes an on-the-wire LOC RR and formats it in a human readable format. */
825	const char *
826	loc_ntoa(
827	const u_char *binary,
828	char *ascii )
829	{
830	static char *error = "?";
831	const u_char *cp = binary;
832
833	int latdeg, latmin, latsec, latsecfrac;
834	int longdeg, longmin, longsec, longsecfrac;
835	char northsouth, eastwest;
836	int altmeters, altfrac, altsign;
837
838	const u_int32_t referencealt = 100000 * 100;
839
840	int32_t latval, longval, altval;
841	u_int32_t templ;
842	u_int8_t sizeval, hpval, vpval, versionval;
843
844	char sizestr, hpstr, *vpstr;
845
846	versionval = *cp++;
847
848	if (versionval) {
849	(void) sprintf(ascii, "; error: unknown LOC RR version");
850	return (ascii);
851	}
852
853	sizeval = *cp++;
854
855	hpval = *cp++;
856	vpval = *cp++;
857
858	GETLONG(templ, cp);
859	latval = (templ - ((u_int32_t)1<<31));
860
861	GETLONG(templ, cp);
862	longval = (templ - ((u_int32_t)1<<31));
863
864	GETLONG(templ, cp);
865	if (templ < referencealt) { /* below WGS 84 spheroid */
866	altval = referencealt - templ;
867	altsign = -1;
868	} else {
869	altval = templ - referencealt;
870	altsign = 1;
871	}
872
873	if (latval < 0) {
874	northsouth = 'S';
875	latval = -latval;
876	} else
877	northsouth = 'N';
878
879	latsecfrac = latval % 1000;
880	latval = latval / 1000;
881	latsec = latval % 60;
882	latval = latval / 60;
883	latmin = latval % 60;
884	latval = latval / 60;
885	latdeg = latval;
886
887	if (longval < 0) {
888	eastwest = 'W';
889	longval = -longval;
890	} else
891	eastwest = 'E';
892
893	longsecfrac = longval % 1000;
894	longval = longval / 1000;
895	longsec = longval % 60;
896	longval = longval / 60;
897	longmin = longval % 60;
898	longval = longval / 60;
899	longdeg = longval;
900
901	altfrac = altval % 100;
902	altmeters = (altval / 100) * altsign;
903
904	if ((sizestr = strdup(precsize_ntoa(sizeval))) == NULL)
905	sizestr = error;
906	if ((hpstr = strdup(precsize_ntoa(hpval))) == NULL)
907	hpstr = error;
908	if ((vpstr = strdup(precsize_ntoa(vpval))) == NULL)
909	vpstr = error;
910
911	sprintf(ascii,
912	"%d %.2d %.2d.%.3d %c %d %.2d %.2d.%.3d %c %d.%.2dm %sm %sm %sm",
913	latdeg, latmin, latsec, latsecfrac, northsouth,
914	longdeg, longmin, longsec, longsecfrac, eastwest,
915	altmeters, altfrac, sizestr, hpstr, vpstr);
916
917	if (sizestr != error)
918	free(sizestr);
919	if (hpstr != error)
920	free(hpstr);
921	if (vpstr != error)
922	free(vpstr);
923
924	return (ascii);
925	}
926
927
928	/* Return the number of DNS hierarchy levels in the name. */
929	int
930	dn_count_labels(const char *name) {
931	int i, len, count;
932
933	len = strlen(name);
934	for (i = 0, count = 0; i < len; i++) {
935	/* XXX need to check for \. or use named's nlabels(). */
936	if (name[i] == '.')
937	count++;
938	}
939
940	/* don't count initial wildcard */
941	if (name[0] == '*')
942	if (count)
943	count--;
944
945	/* don't count the null label for root. */
946	/* if terminating '.' not found, must adjust */
947	/* count to include last label */
948	if (len > 0 && name[len-1] != '.')
949	count++;
950	return (count);
951	}
952
953
954	/*
955	* Make dates expressed in seconds-since-Jan-1-1970 easy to read.
956	* SIG records are required to be printed like this, by the Secure DNS RFC.
957	*/
958	char *
959	p_secstodate (u_long secs) {
960	static char output[15]; /* YYYYMMDDHHMMSS and null */
961	time_t clock = secs;
962	struct tm *time;
963
964	time = gmtime(&clock);
965	time->tm_year += 1900;
966	time->tm_mon += 1;
967	sprintf(output, "%04d%02d%02d%02d%02d%02d",
968	time->tm_year, time->tm_mon, time->tm_mday,
969	time->tm_hour, time->tm_min, time->tm_sec);
970	return (output);
971	}

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