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source: rtems/cpukit/libnetworking/libc/res_debug.c @ 300c914c

4.104.114.84.95

Last change on this file since 300c914c was 300c914c, checked in by Joel Sherrill <joel.sherrill@…>, on 09/01/06 at 18:15:01
* empty log message *
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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 defined(LIBC_SCCS) && !defined(lint)
97	static char sccsid[] = "@(#)res_debug.c 8.1 (Berkeley) 6/4/93";
98	static char rcsid[] = "$Id$";
99	#endif /* LIBC_SCCS and not lint */
100
101	#include <inttypes.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	#define SPRINTF(x) sprintf x
122
123	extern const char *_res_opcodes[];
124	extern const char *_res_resultcodes[];
125	extern const char *_res_sectioncodes[];
126
127	/*
128	* Print the current options.
129	*/
130	void
131	fp_resstat(struct __res_state statp, FILE file) {
132	u_long mask;
133
134	fprintf(file, ";; res options:");
135	if (!statp)
136	statp = &_res;
137	for (mask = 1; mask != 0; mask <<= 1)
138	if (statp->options & mask)
139	fprintf(file, " %s", p_option(mask));
140	putc('\n', file);
141	}
142
143	static void
144	do_section(ns_msg handle, ns_sect section, int pflag, FILE file) {
145	int n, sflag, rrnum;
146	char buf[2048]; /* XXX need to malloc */
147	ns_opcode opcode;
148	ns_rr rr;
149
150	/*
151	* Print answer records.
152	*/
153	sflag = (_res.pfcode & pflag);
154	if (_res.pfcode && !sflag)
155	return;
156
157	opcode = ns_msg_getflag(*handle, ns_f_opcode);
158	rrnum = 0;
159	for (;;) {
160	if (ns_parserr(handle, section, rrnum, &rr)) {
161	if (errno != ENODEV)
162	fprintf(file, ";; ns_parserr: %s\n",
163	strerror(errno));
164	else if (rrnum > 0 && sflag != 0 &&
165	(_res.pfcode & RES_PRF_HEAD1))
166	putc('\n', file);
167	return;
168	}
169	if (rrnum == 0 && sflag != 0 && (_res.pfcode & RES_PRF_HEAD1))
170	fprintf(file, ";; %s SECTION:\n",
171	p_section(section, opcode));
172	if (section == ns_s_qd)
173	fprintf(file, ";;\t%s, type = %s, class = %s\n",
174	ns_rr_name(rr),
175	p_type(ns_rr_type(rr)),
176	p_class(ns_rr_class(rr)));
177	else {
178	n = ns_sprintrr(handle, &rr, NULL, NULL,
179	buf, sizeof buf);
180	if (n < 0) {
181	fprintf(file, ";; ns_sprintrr: %s\n",
182	strerror(errno));
183	return;
184	}
185	fputs(buf, file);
186	fputc('\n', file);
187	}
188	rrnum++;
189	}
190	}
191
192	void
193	p_query(const u_char *msg) {
194	fp_query(msg, stdout);
195	}
196
197	void
198	fp_query(const u_char msg, FILE file) {
199	fp_nquery(msg, PACKETSZ, file);
200	}
201
202	/*
203	* Print the contents of a query.
204	* This is intended to be primarily a debugging routine.
205	*/
206	void
207	fp_nquery(const u_char msg, int len, FILE file) {
208	ns_msg handle;
209	int qdcount, ancount, nscount, arcount;
210	u_int opcode, rcode, id;
211
212	if ((_res.options & RES_INIT) == 0 && res_init() == -1)
213	return;
214
215	if (ns_initparse(msg, len, &handle) < 0) {
216	fprintf(file, ";; ns_initparse: %s\n", strerror(errno));
217	return;
218	}
219	opcode = ns_msg_getflag(handle, ns_f_opcode);
220	rcode = ns_msg_getflag(handle, ns_f_rcode);
221	id = ns_msg_id(handle);
222	qdcount = ns_msg_count(handle, ns_s_qd);
223	ancount = ns_msg_count(handle, ns_s_an);
224	nscount = ns_msg_count(handle, ns_s_ns);
225	arcount = ns_msg_count(handle, ns_s_ar);
226
227	/*
228	* Print header fields.
229	*/
230	if ((!_res.pfcode) \|\| (_res.pfcode & RES_PRF_HEADX) \|\| rcode)
231	fprintf(file,
232	";; ->>HEADER<<- opcode: %s, status: %s, id: %d\n",
233	_res_opcodes[opcode], _res_resultcodes[rcode], id);
234	if ((!_res.pfcode) \|\| (_res.pfcode & RES_PRF_HEADX))
235	putc(';', file);
236	if ((!_res.pfcode) \|\| (_res.pfcode & RES_PRF_HEAD2)) {
237	fprintf(file, "; flags:");
238	if (ns_msg_getflag(handle, ns_f_qr))
239	fprintf(file, " qr");
240	if (ns_msg_getflag(handle, ns_f_aa))
241	fprintf(file, " aa");
242	if (ns_msg_getflag(handle, ns_f_tc))
243	fprintf(file, " tc");
244	if (ns_msg_getflag(handle, ns_f_rd))
245	fprintf(file, " rd");
246	if (ns_msg_getflag(handle, ns_f_ra))
247	fprintf(file, " ra");
248	if (ns_msg_getflag(handle, ns_f_z))
249	fprintf(file, " ??");
250	if (ns_msg_getflag(handle, ns_f_ad))
251	fprintf(file, " ad");
252	if (ns_msg_getflag(handle, ns_f_cd))
253	fprintf(file, " cd");
254	}
255	if ((!_res.pfcode) \|\| (_res.pfcode & RES_PRF_HEAD1)) {
256	fprintf(file, "; %s: %d",
257	p_section(ns_s_qd, opcode), qdcount);
258	fprintf(file, ", %s: %d",
259	p_section(ns_s_an, opcode), ancount);
260	fprintf(file, ", %s: %d",
261	p_section(ns_s_ns, opcode), nscount);
262	fprintf(file, ", %s: %d",
263	p_section(ns_s_ar, opcode), arcount);
264	}
265	if ((!_res.pfcode) \|\| (_res.pfcode &
266	(RES_PRF_HEADX \| RES_PRF_HEAD2 \| RES_PRF_HEAD1))) {
267	putc('\n',file);
268	}
269	/*
270	* Print the various sections.
271	*/
272	do_section(&handle, ns_s_qd, RES_PRF_QUES, file);
273	do_section(&handle, ns_s_an, RES_PRF_ANS, file);
274	do_section(&handle, ns_s_ns, RES_PRF_AUTH, file);
275	do_section(&handle, ns_s_ar, RES_PRF_ADD, file);
276	if (qdcount == 0 && ancount == 0 &&
277	nscount == 0 && arcount == 0)
278	putc('\n', file);
279	}
280
281	const u_char *
282	p_cdnname(const u_char cp, const u_char msg, int len, FILE *file) {
283	char name[MAXDNAME];
284	int n;
285
286	if ((n = dn_expand(msg, msg + len, cp, name, sizeof name)) < 0)
287	return (NULL);
288	if (name[0] == '\0')
289	putc('.', file);
290	else
291	fputs(name, file);
292	return (cp + n);
293	}
294
295	const u_char *
296	p_cdname(const u_char cp, const u_char msg, FILE *file) {
297	return (p_cdnname(cp, msg, PACKETSZ, file));
298	}
299
300	/* Return a fully-qualified domain name from a compressed name (with
301	length supplied). */
302
303	const u_char *
304	p_fqnname(cp, msg, msglen, name, namelen)
305	const u_char cp, msg;
306	int msglen;
307	char *name;
308	int namelen;
309	{
310	int n, newlen;
311
312	if ((n = dn_expand(msg, cp + msglen, cp, name, namelen)) < 0)
313	return (NULL);
314	newlen = strlen(name);
315	if (newlen == 0 \|\| name[newlen - 1] != '.') {
316	if (newlen + 1 >= namelen) /* Lack space for final dot */
317	return (NULL);
318	else
319	strcpy(name + newlen, ".");
320	}
321	return (cp + n);
322	}
323
324	/* XXX: the rest of these functions need to become length-limited, too. */
325
326	const u_char *
327	p_fqname(const u_char cp, const u_char msg, FILE *file) {
328	char name[MAXDNAME];
329	const u_char *n;
330
331	n = p_fqnname(cp, msg, MAXCDNAME, name, sizeof name);
332	if (n == NULL)
333	return (NULL);
334	fputs(name, file);
335	return (n);
336	}
337
338	/*
339	* Names of RR classes and qclasses. Classes and qclasses are the same, except
340	* that C_ANY is a qclass but not a class. (You can ask for records of class
341	* C_ANY, but you can't have any records of that class in the database.)
342	*/
343	const struct res_sym __p_class_syms[] = {
344	{C_IN, "IN"},
345	{C_CHAOS, "CHAOS"},
346	{C_HS, "HS"},
347	{C_HS, "HESIOD"},
348	{C_ANY, "ANY"},
349	{C_NONE, "NONE"},
350	{C_IN, (char *)0}
351	};
352
353	/*
354	* Names of message sections.
355	*/
356	const struct res_sym __p_default_section_syms[] = {
357	{ns_s_qd, "QUERY"},
358	{ns_s_an, "ANSWER"},
359	{ns_s_ns, "AUTHORITY"},
360	{ns_s_ar, "ADDITIONAL"},
361	{0, (char *)0}
362	};
363
364	const struct res_sym __p_update_section_syms[] = {
365	{S_ZONE, "ZONE"},
366	{S_PREREQ, "PREREQUISITE"},
367	{S_UPDATE, "UPDATE"},
368	{S_ADDT, "ADDITIONAL"},
369	{0, (char *)0}
370	};
371
372	/*
373	* Names of RR types and qtypes. Types and qtypes are the same, except
374	* that T_ANY is a qtype but not a type. (You can ask for records of type
375	* T_ANY, but you can't have any records of that type in the database.)
376	*/
377	const struct res_sym __p_type_syms[] = {
378	{T_A, "A", "address"},
379	{T_NS, "NS", "name server"},
380	{T_MD, "MD", "mail destination (deprecated)"},
381	{T_MF, "MF", "mail forwarder (deprecated)"},
382	{T_CNAME, "CNAME", "canonical name"},
383	{T_SOA, "SOA", "start of authority"},
384	{T_MB, "MB", "mailbox"},
385	{T_MG, "MG", "mail group member"},
386	{T_MR, "MR", "mail rename"},
387	{T_NULL, "NULL", "null"},
388	{T_WKS, "WKS", "well-known service (deprecated)"},
389	{T_PTR, "PTR", "domain name pointer"},
390	{T_HINFO, "HINFO", "host information"},
391	{T_MINFO, "MINFO", "mailbox information"},
392	{T_MX, "MX", "mail exchanger"},
393	{T_TXT, "TXT", "text"},
394	{T_RP, "RP", "responsible person"},
395	{T_AFSDB, "AFSDB", "DCE or AFS server"},
396	{T_X25, "X25", "X25 address"},
397	{T_ISDN, "ISDN", "ISDN address"},
398	{T_RT, "RT", "router"},
399	{T_NSAP, "NSAP", "nsap address"},
400	{T_NSAP_PTR, "NSAP_PTR", "domain name pointer"},
401	{T_SIG, "SIG", "signature"},
402	{T_KEY, "KEY", "key"},
403	{T_PX, "PX", "mapping information"},
404	{T_GPOS, "GPOS", "geographical position (withdrawn)"},
405	{T_AAAA, "AAAA", "IPv6 address"},
406	{T_LOC, "LOC", "location"},
407	{T_NXT, "NXT", "next valid name (unimplemented)"},
408	{T_EID, "EID", "endpoint identifier (unimplemented)"},
409	{T_NIMLOC, "NIMLOC", "NIMROD locator (unimplemented)"},
410	{T_SRV, "SRV", "server selection"},
411	{T_ATMA, "ATMA", "ATM address (unimplemented)"},
412	{T_IXFR, "IXFR", "incremental zone transfer"},
413	{T_AXFR, "AXFR", "zone transfer"},
414	{T_MAILB, "MAILB", "mailbox-related data (deprecated)"},
415	{T_MAILA, "MAILA", "mail agent (deprecated)"},
416	{T_NAPTR, "NAPTR", "URN Naming Authority"},
417	{T_ANY, "ANY", "\"any\""},
418	{0, NULL, NULL}
419	};
420
421	int
422	sym_ston(const struct res_sym syms, const char name, int *success) {
423	for ((void)NULL; syms->name != 0; syms++) {
424	if (strcasecmp (name, syms->name) == 0) {
425	if (success)
426	*success = 1;
427	return (syms->number);
428	}
429	}
430	if (success)
431	*success = 0;
432	return (syms->number); /* The default value. */
433	}
434
435	const char *
436	sym_ntos(const struct res_sym syms, int number, int success) {
437	static char unname[20];
438
439	for ((void)NULL; syms->name != 0; syms++) {
440	if (number == syms->number) {
441	if (success)
442	*success = 1;
443	return (syms->name);
444	}
445	}
446
447	sprintf(unname, "%d", number);
448	if (success)
449	*success = 0;
450	return (unname);
451	}
452
453	const char *
454	sym_ntop(const struct res_sym syms, int number, int success) {
455	static char unname[20];
456
457	for ((void)NULL; syms->name != 0; syms++) {
458	if (number == syms->number) {
459	if (success)
460	*success = 1;
461	return (syms->humanname);
462	}
463	}
464	sprintf(unname, "%d", number);
465	if (success)
466	*success = 0;
467	return (unname);
468	}
469
470	/*
471	* Return a string for the type.
472	*/
473	const char *
474	p_type(int type) {
475	return (sym_ntos(__p_type_syms, type, (int *)0));
476	}
477
478	/*
479	* Return a string for the type.
480	*/
481	const char *
482	p_section(int section, int opcode) {
483	const struct res_sym *symbols;
484
485	switch (opcode) {
486	case ns_o_update:
487	symbols = __p_update_section_syms;
488	break;
489	default:
490	symbols = __p_default_section_syms;
491	break;
492	}
493	return (sym_ntos(symbols, section, (int *)0));
494	}
495
496	/*
497	* Return a mnemonic for class.
498	*/
499	const char *
500	p_class(int class) {
501	return (sym_ntos(__p_class_syms, class, (int *)0));
502	}
503
504	/*
505	* Return a mnemonic for an option
506	*/
507	const char *
508	p_option(u_long option) {
509	static char nbuf[40];
510
511	switch (option) {
512	case RES_INIT: return "init";
513	case RES_DEBUG: return "debug";
514	case RES_AAONLY: return "aaonly(unimpl)";
515	case RES_USEVC: return "usevc";
516	case RES_PRIMARY: return "primry(unimpl)";
517	case RES_IGNTC: return "igntc";
518	case RES_RECURSE: return "recurs";
519	case RES_DEFNAMES: return "defnam";
520	case RES_STAYOPEN: return "styopn";
521	case RES_DNSRCH: return "dnsrch";
522	case RES_INSECURE1: return "insecure1";
523	case RES_INSECURE2: return "insecure2";
524	default: sprintf(nbuf, "?0x%lx?", (u_long)option);
525	return (nbuf);
526	}
527	}
528
529	/*
530	* Return a mnemonic for a time to live.
531	*/
532	const char *
533	p_time(u_int32_t value) {
534	static char nbuf[40];
535
536	if (ns_format_ttl(value, nbuf, sizeof nbuf) < 0)
537	sprintf(nbuf, "%" PRIu32, (uint32_t) value);
538	return (nbuf);
539	}
540
541
542	/*
543	* routines to convert between on-the-wire RR format and zone file format.
544	* Does not contain conversion to/from decimal degrees; divide or multiply
545	* by 60601000 for that.
546	*/
547
548	static uint32_t poweroften[10] = {1, 10, 100, 1000, 10000, 100000,
549	1000000,10000000,100000000,1000000000};
550
551	/* takes an XeY precision/size value, returns a string representation. */
552	static const char *
553	precsize_ntoa(prec)
554	u_int8_t prec;
555	{
556	static char retbuf[sizeof "90000000.00"];
557	unsigned long val;
558	uint32_t mantissa, exponent;
559
560	mantissa = (int)((prec >> 4) & 0x0f) % 10;
561	exponent = (int)((prec >> 0) & 0x0f) % 10;
562
563	val = mantissa * poweroften[exponent];
564
565	(void) sprintf(retbuf, "%ld.%.2ld", val/100, val%100);
566	return (retbuf);
567	}
568
569	/* converts ascii size/precision X * 10*Y(cm) to 0xXY. moves pointer. /
570	static u_int8_t
571	precsize_aton(strptr)
572	const char **strptr;
573	{
574	unsigned int mval = 0, cmval = 0;
575	u_int8_t retval = 0;
576	const char *cp;
577	int exponent;
578	int mantissa;
579
580	cp = *strptr;
581
582	while (isdigit((int)*cp))
583	mval = mval * 10 + (*cp++ - '0');
584
585	if (cp == '.') { / centimeters */
586	cp++;
587	if (isdigit((int)*cp)) {
588	cmval = (cp++ - '0') 10;
589	if (isdigit((int)*cp)) {
590	cmval += (*cp++ - '0');
591	}
592	}
593	}
594	cmval = (mval * 100) + cmval;
595
596	for (exponent = 0; exponent < 9; exponent++)
597	if (cmval < poweroften[exponent+1])
598	break;
599
600	mantissa = cmval / poweroften[exponent];
601	if (mantissa > 9)
602	mantissa = 9;
603
604	retval = (mantissa << 4) \| exponent;
605
606	*strptr = cp;
607
608	return (retval);
609	}
610
611	/* converts ascii lat/lon to unsigned encoded 32-bit number. moves pointer. */
612	static u_int32_t
613	latlon2ul(latlonstrptr,which)
614	char **latlonstrptr;
615	int *which;
616	{
617	char *cp;
618	u_int32_t retval;
619	int deg = 0, min = 0, secs = 0, secsfrac = 0;
620
621	cp = *latlonstrptr;
622
623	while (isdigit((int)*cp))
624	deg = deg * 10 + (*cp++ - '0');
625
626	while (isspace((int)*cp))
627	cp++;
628
629	if (!(isdigit((int)*cp)))
630	goto fndhemi;
631
632	while (isdigit((int)*cp))
633	min = min * 10 + (*cp++ - '0');
634
635	while (isspace((int)*cp))
636	cp++;
637
638	if (!(isdigit((int)*cp)))
639	goto fndhemi;
640
641	while (isdigit((int)*cp))
642	secs = secs * 10 + (*cp++ - '0');
643
644	if (cp == '.') { / decimal seconds */
645	cp++;
646	if (isdigit((int)*cp)) {
647	secsfrac = (cp++ - '0') 100;
648	if (isdigit((int)*cp)) {
649	secsfrac += (cp++ - '0') 10;
650	if (isdigit((int)*cp)) {
651	secsfrac += (*cp++ - '0');
652	}
653	}
654	}
655	}
656
657	while (!isspace((int)cp)) / if any trailing garbage */
658	cp++;
659
660	while (isspace((int)*cp))
661	cp++;
662
663	fndhemi:
664	switch (*cp) {
665	case 'N': case 'n':
666	case 'E': case 'e':
667	retval = ((u_int32_t)1<<31)
668	+ (((((deg * 60) + min) * 60) + secs) * 1000)
669	+ secsfrac;
670	break;
671	case 'S': case 's':
672	case 'W': case 'w':
673	retval = ((u_int32_t)1<<31)
674	- (((((deg * 60) + min) * 60) + secs) * 1000)
675	- secsfrac;
676	break;
677	default:
678	retval = 0; /* invalid value -- indicates error */
679	break;
680	}
681
682	switch (*cp) {
683	case 'N': case 'n':
684	case 'S': case 's':
685	which = 1; / latitude */
686	break;
687	case 'E': case 'e':
688	case 'W': case 'w':
689	which = 2; / longitude */
690	break;
691	default:
692	which = 0; / error */
693	break;
694	}
695
696	cp++; /* skip the hemisphere */
697
698	while (!isspace((int)cp)) / if any trailing garbage */
699	cp++;
700
701	while (isspace((int)cp)) / move to next field */
702	cp++;
703
704	*latlonstrptr = cp;
705
706	return (retval);
707	}
708
709	/* converts a zone file representation in a string to an RDATA on-the-wire
710	* representation. */
711	int
712	loc_aton(ascii, binary)
713	const char *ascii;
714	u_char *binary;
715	{
716	const char cp, maxcp;
717	u_char *bcp;
718
719	u_int32_t latit = 0, longit = 0, alt = 0;
720	u_int32_t lltemp1 = 0, lltemp2 = 0;
721	int altmeters = 0, altfrac = 0, altsign = 1;
722	u_int8_t hp = 0x16; /* default = 1e6 cm = 10000.00m = 10km */
723	u_int8_t vp = 0x13; /* default = 1e3 cm = 10.00m */
724	u_int8_t siz = 0x12; /* default = 1e2 cm = 1.00m */
725	int which1 = 0, which2 = 0;
726
727	cp = ascii;
728	maxcp = cp + strlen(ascii);
729
730	lltemp1 = latlon2ul(&cp, &which1);
731
732	lltemp2 = latlon2ul(&cp, &which2);
733
734	switch (which1 + which2) {
735	case 3: /* 1 + 2, the only valid combination */
736	if ((which1 == 1) && (which2 == 2)) { /* normal case */
737	latit = lltemp1;
738	longit = lltemp2;
739	} else if ((which1 == 2) && (which2 == 1)) { /* reversed */
740	longit = lltemp1;
741	latit = lltemp2;
742	} else { /* some kind of brokenness */
743	return (0);
744	}
745	break;
746	default: /* we didn't get one of each */
747	return (0);
748	}
749
750	/* altitude */
751	if (*cp == '-') {
752	altsign = -1;
753	cp++;
754	}
755
756	if (*cp == '+')
757	cp++;
758
759	while (isdigit((int)*cp))
760	altmeters = altmeters * 10 + (*cp++ - '0');
761
762	if (cp == '.') { / decimal meters */
763	cp++;
764	if (isdigit((int)*cp)) {
765	altfrac = (cp++ - '0') 10;
766	if (isdigit((int)*cp)) {
767	altfrac += (*cp++ - '0');
768	}
769	}
770	}
771
772	alt = (10000000 + (altsign * (altmeters * 100 + altfrac)));
773
774	while (!isspace((int)cp) && (cp < maxcp)) / if trailing garbage or m */
775	cp++;
776
777	while (isspace((int)*cp) && (cp < maxcp))
778	cp++;
779
780	if (cp >= maxcp)
781	goto defaults;
782
783	siz = precsize_aton(&cp);
784
785	while (!isspace((int)cp) && (cp < maxcp)) / if trailing garbage or m */
786	cp++;
787
788	while (isspace((int)*cp) && (cp < maxcp))
789	cp++;
790
791	if (cp >= maxcp)
792	goto defaults;
793
794	hp = precsize_aton(&cp);
795
796	while (!isspace((int)cp) && (cp < maxcp)) / if trailing garbage or m */
797	cp++;
798
799	while (isspace((int)*cp) && (cp < maxcp))
800	cp++;
801
802	if (cp >= maxcp)
803	goto defaults;
804
805	vp = precsize_aton(&cp);
806
807	defaults:
808
809	bcp = binary;
810	bcp++ = (u_int8_t) 0; / version byte */
811	*bcp++ = siz;
812	*bcp++ = hp;
813	*bcp++ = vp;
814	PUTLONG(latit,bcp);
815	PUTLONG(longit,bcp);
816	PUTLONG(alt,bcp);
817
818	return (16); /* size of RR in octets */
819	}
820
821	/* takes an on-the-wire LOC RR and formats it in a human readable format. */
822	const char *
823	loc_ntoa(binary, ascii)
824	const u_char *binary;
825	char *ascii;
826	{
827	static char *error = "?";
828	const u_char *cp = binary;
829
830	int latdeg, latmin, latsec, latsecfrac;
831	int longdeg, longmin, longsec, longsecfrac;
832	char northsouth, eastwest;
833	int altmeters, altfrac, altsign;
834
835	const u_int32_t referencealt = 100000 * 100;
836
837	int32_t latval, longval, altval;
838	u_int32_t templ;
839	u_int8_t sizeval, hpval, vpval, versionval;
840
841	char sizestr, hpstr, *vpstr;
842
843	versionval = *cp++;
844
845	if (versionval) {
846	(void) sprintf(ascii, "; error: unknown LOC RR version");
847	return (ascii);
848	}
849
850	sizeval = *cp++;
851
852	hpval = *cp++;
853	vpval = *cp++;
854
855	GETLONG(templ, cp);
856	latval = (templ - ((u_int32_t)1<<31));
857
858	GETLONG(templ, cp);
859	longval = (templ - ((u_int32_t)1<<31));
860
861	GETLONG(templ, cp);
862	if (templ < referencealt) { /* below WGS 84 spheroid */
863	altval = referencealt - templ;
864	altsign = -1;
865	} else {
866	altval = templ - referencealt;
867	altsign = 1;
868	}
869
870	if (latval < 0) {
871	northsouth = 'S';
872	latval = -latval;
873	} else
874	northsouth = 'N';
875
876	latsecfrac = latval % 1000;
877	latval = latval / 1000;
878	latsec = latval % 60;
879	latval = latval / 60;
880	latmin = latval % 60;
881	latval = latval / 60;
882	latdeg = latval;
883
884	if (longval < 0) {
885	eastwest = 'W';
886	longval = -longval;
887	} else
888	eastwest = 'E';
889
890	longsecfrac = longval % 1000;
891	longval = longval / 1000;
892	longsec = longval % 60;
893	longval = longval / 60;
894	longmin = longval % 60;
895	longval = longval / 60;
896	longdeg = longval;
897
898	altfrac = altval % 100;
899	altmeters = (altval / 100) * altsign;
900
901	if ((sizestr = strdup(precsize_ntoa(sizeval))) == NULL)
902	sizestr = error;
903	if ((hpstr = strdup(precsize_ntoa(hpval))) == NULL)
904	hpstr = error;
905	if ((vpstr = strdup(precsize_ntoa(vpval))) == NULL)
906	vpstr = error;
907
908	sprintf(ascii,
909	"%d %.2d %.2d.%.3d %c %d %.2d %.2d.%.3d %c %d.%.2dm %sm %sm %sm",
910	latdeg, latmin, latsec, latsecfrac, northsouth,
911	longdeg, longmin, longsec, longsecfrac, eastwest,
912	altmeters, altfrac, sizestr, hpstr, vpstr);
913
914	if (sizestr != error)
915	free(sizestr);
916	if (hpstr != error)
917	free(hpstr);
918	if (vpstr != error)
919	free(vpstr);
920
921	return (ascii);
922	}
923
924
925	/* Return the number of DNS hierarchy levels in the name. */
926	int
927	dn_count_labels(const char *name) {
928	int i, len, count;
929
930	len = strlen(name);
931	for (i = 0, count = 0; i < len; i++) {
932	/* XXX need to check for \. or use named's nlabels(). */
933	if (name[i] == '.')
934	count++;
935	}
936
937	/* don't count initial wildcard */
938	if (name[0] == '*')
939	if (count)
940	count--;
941
942	/* don't count the null label for root. */
943	/* if terminating '.' not found, must adjust */
944	/* count to include last label */
945	if (len > 0 && name[len-1] != '.')
946	count++;
947	return (count);
948	}
949
950
951	/*
952	* Make dates expressed in seconds-since-Jan-1-1970 easy to read.
953	* SIG records are required to be printed like this, by the Secure DNS RFC.
954	*/
955	char *
956	p_secstodate (u_long secs) {
957	static char output[15]; /* YYYYMMDDHHMMSS and null */
958	time_t clock = secs;
959	struct tm *time;
960
961	time = gmtime(&clock);
962	time->tm_year += 1900;
963	time->tm_mon += 1;
964	sprintf(output, "%04d%02d%02d%02d%02d%02d",
965	time->tm_year, time->tm_mon, time->tm_mday,
966	time->tm_hour, time->tm_min, time->tm_sec);
967	return (output);
968	}

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