michael@0: /*	$NetBSD: res_debug.c,v 1.7 2004/11/07 02:25:01 christos Exp $	*/
michael@0: 
michael@0: /*
michael@0:  * Copyright (c) 1985
michael@0:  *    The Regents of the University of California.  All rights reserved.
michael@0:  *
michael@0:  * Redistribution and use in source and binary forms, with or without
michael@0:  * modification, are permitted provided that the following conditions
michael@0:  * are met:
michael@0:  * 1. Redistributions of source code must retain the above copyright
michael@0:  *    notice, this list of conditions and the following disclaimer.
michael@0:  * 2. Redistributions in binary form must reproduce the above copyright
michael@0:  *    notice, this list of conditions and the following disclaimer in the
michael@0:  *    documentation and/or other materials provided with the distribution.
michael@0:  * 3. All advertising materials mentioning features or use of this software
michael@0:  *    must display the following acknowledgement:
michael@0:  * 	This product includes software developed by the University of
michael@0:  * 	California, Berkeley and its contributors.
michael@0:  * 4. Neither the name of the University nor the names of its contributors
michael@0:  *    may be used to endorse or promote products derived from this software
michael@0:  *    without specific prior written permission.
michael@0:  *
michael@0:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
michael@0:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
michael@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
michael@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
michael@0:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
michael@0:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
michael@0:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
michael@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
michael@0:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
michael@0:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
michael@0:  * SUCH DAMAGE.
michael@0:  */
michael@0: 
michael@0: /*
michael@0:  * Portions Copyright (c) 1993 by Digital Equipment Corporation.
michael@0:  *
michael@0:  * Permission to use, copy, modify, and distribute this software for any
michael@0:  * purpose with or without fee is hereby granted, provided that the above
michael@0:  * copyright notice and this permission notice appear in all copies, and that
michael@0:  * the name of Digital Equipment Corporation not be used in advertising or
michael@0:  * publicity pertaining to distribution of the document or software without
michael@0:  * specific, written prior permission.
michael@0:  *
michael@0:  * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
michael@0:  * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
michael@0:  * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
michael@0:  * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
michael@0:  * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
michael@0:  * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
michael@0:  * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
michael@0:  * SOFTWARE.
michael@0:  */
michael@0: 
michael@0: /*
michael@0:  * Portions Copyright (c) 1995 by International Business Machines, Inc.
michael@0:  *
michael@0:  * International Business Machines, Inc. (hereinafter called IBM) grants
michael@0:  * permission under its copyrights to use, copy, modify, and distribute this
michael@0:  * Software with or without fee, provided that the above copyright notice and
michael@0:  * all paragraphs of this notice appear in all copies, and that the name of IBM
michael@0:  * not be used in connection with the marketing of any product incorporating
michael@0:  * the Software or modifications thereof, without specific, written prior
michael@0:  * permission.
michael@0:  *
michael@0:  * To the extent it has a right to do so, IBM grants an immunity from suit
michael@0:  * under its patents, if any, for the use, sale or manufacture of products to
michael@0:  * the extent that such products are used for performing Domain Name System
michael@0:  * dynamic updates in TCP/IP networks by means of the Software.  No immunity is
michael@0:  * granted for any product per se or for any other function of any product.
michael@0:  *
michael@0:  * THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES,
michael@0:  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
michael@0:  * PARTICULAR PURPOSE.  IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL,
michael@0:  * DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING
michael@0:  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN
michael@0:  * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES.
michael@0:  */
michael@0: 
michael@0: /*
michael@0:  * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
michael@0:  * Portions Copyright (c) 1996-1999 by Internet Software Consortium.
michael@0:  *
michael@0:  * Permission to use, copy, modify, and distribute this software for any
michael@0:  * purpose with or without fee is hereby granted, provided that the above
michael@0:  * copyright notice and this permission notice appear in all copies.
michael@0:  *
michael@0:  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
michael@0:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
michael@0:  * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
michael@0:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
michael@0:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
michael@0:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
michael@0:  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
michael@0:  */
michael@0: 
michael@0: /*
michael@0:  * This version of this file is derived from Android 2.3 "Gingerbread",
michael@0:  * which contains uncredited changes by Android/Google developers.  It has
michael@0:  * been modified in 2011 for use in the Android build of Mozilla Firefox by
michael@0:  * Mozilla contributors (including Michael Edwards <m.k.edwards@gmail.com>,
michael@0:  * and Steve Workman <sjhworkman@gmail.com>).
michael@0:  * These changes are offered under the same license as the original NetBSD
michael@0:  * file, whose copyright and license are unchanged above.
michael@0:  */
michael@0: 
michael@0: #define ANDROID_CHANGES 1
michael@0: #define MOZILLA_NECKO_EXCLUDE_CODE 1
michael@0: 
michael@0: #include <sys/cdefs.h>
michael@0: #if defined(LIBC_SCCS) && !defined(lint)
michael@0: #ifdef notdef
michael@0: static const char sccsid[] = "@(#)res_debug.c	8.1 (Berkeley) 6/4/93";
michael@0: static const char rcsid[] = "Id: res_debug.c,v 1.3.2.5.4.5 2004/07/28 20:16:46 marka Exp";
michael@0: #else
michael@0: __RCSID("$NetBSD: res_debug.c,v 1.7 2004/11/07 02:25:01 christos Exp $");
michael@0: #endif
michael@0: #endif /* LIBC_SCCS and not lint */
michael@0: 
michael@0: 
michael@0: 
michael@0: #include <sys/types.h>
michael@0: #include <sys/param.h>
michael@0: #include <sys/socket.h>
michael@0: 
michael@0: #include <netinet/in.h>
michael@0: #include <arpa/inet.h>
michael@0: #include "arpa_nameser.h"
michael@0: 
michael@0: #include <ctype.h>
michael@0: #include <errno.h>
michael@0: #include <math.h>
michael@0: #include <netdb.h>
michael@0: #include "resolv_private.h"
michael@0: #include <stdio.h>
michael@0: #include <stdlib.h>
michael@0: #include <string.h>
michael@0: #include <time.h>
michael@0: 
michael@0: 
michael@0: 
michael@0: #ifdef SPRINTF_CHAR
michael@0: # define SPRINTF(x) strlen(sprintf/**/x)
michael@0: #else
michael@0: # define SPRINTF(x) sprintf x
michael@0: #endif
michael@0: 
michael@0: #ifndef MOZILLA_NECKO_EXCLUDE_CODE
michael@0: static const char *precsize_ntoa(u_int32_t);
michael@0: #endif
michael@0: 
michael@0: extern const char * const _res_opcodes[];
michael@0: extern const char * const _res_sectioncodes[];
michael@0: 
michael@0: #ifndef MOZILLA_NECKO_EXCLUDE_CODE
michael@0: #ifndef _LIBC
michael@0: /*
michael@0:  * Print the current options.
michael@0:  */
michael@0: void
michael@0: fp_resstat(const res_state statp, FILE *file) {
michael@0: 	u_long mask;
michael@0: 
michael@0: 	fprintf(file, ";; res options:");
michael@0: 	for (mask = 1;  mask != 0U;  mask <<= 1)
michael@0: 		if (statp->options & mask)
michael@0: 			fprintf(file, " %s", p_option(mask));
michael@0: 	putc('\n', file);
michael@0: }
michael@0: #endif
michael@0: #endif
michael@0: 
michael@0: static void
michael@0: do_section(const res_state statp,
michael@0: 	   ns_msg *handle, ns_sect section,
michael@0: 	   int pflag, FILE *file)
michael@0: {
michael@0: 	int n, sflag, rrnum;
michael@0: 	int buflen = 2048;
michael@0: 	char *buf;
michael@0: 	ns_opcode opcode;
michael@0: 	ns_rr rr;
michael@0: 
michael@0: 	/*
michael@0: 	 * Print answer records.
michael@0: 	 */
michael@0: 	sflag = (statp->pfcode & pflag);
michael@0: 	if (statp->pfcode && !sflag)
michael@0: 		return;
michael@0: 
michael@0: 	buf = malloc((size_t)buflen);
michael@0: 	if (buf == NULL) {
michael@0: 		fprintf(file, ";; memory allocation failure\n");
michael@0: 		return;
michael@0: 	}
michael@0: 
michael@0: 	opcode = (ns_opcode) ns_msg_getflag(*handle, ns_f_opcode);
michael@0: 	rrnum = 0;
michael@0: 	for (;;) {
michael@0: 		if (ns_parserr(handle, section, rrnum, &rr)) {
michael@0: 			if (errno != ENODEV)
michael@0: 				fprintf(file, ";; ns_parserr: %s\n",
michael@0: 					strerror(errno));
michael@0: 			else if (rrnum > 0 && sflag != 0 &&
michael@0: 				 (statp->pfcode & RES_PRF_HEAD1))
michael@0: 				putc('\n', file);
michael@0: 			goto cleanup;
michael@0: 		}
michael@0: 		if (rrnum == 0 && sflag != 0 && (statp->pfcode & RES_PRF_HEAD1))
michael@0: 			fprintf(file, ";; %s SECTION:\n",
michael@0: 				p_section(section, opcode));
michael@0: 		if (section == ns_s_qd)
michael@0: 			fprintf(file, ";;\t%s, type = %s, class = %s\n",
michael@0: 				ns_rr_name(rr),
michael@0: 				p_type(ns_rr_type(rr)),
michael@0: 				p_class(ns_rr_class(rr)));
michael@0: 		else if (section == ns_s_ar && ns_rr_type(rr) == ns_t_opt) {
michael@0: 			u_int32_t ttl = ns_rr_ttl(rr);
michael@0: 			fprintf(file,
michael@0: 				"; EDNS: version: %u, udp=%u, flags=%04x\n",
michael@0: 				(ttl>>16)&0xff, ns_rr_class(rr), ttl&0xffff);
michael@0: 		} else {
michael@0: 			n = ns_sprintrr(handle, &rr, NULL, NULL,
michael@0: 					buf, (u_int)buflen);
michael@0: 			if (n < 0) {
michael@0: 				if (errno == ENOSPC) {
michael@0: 					free(buf);
michael@0: 					buf = NULL;
michael@0: 					if (buflen < 131072)
michael@0: 						buf = malloc((size_t)(buflen += 1024));
michael@0: 					if (buf == NULL) {
michael@0: 						fprintf(file,
michael@0: 				              ";; memory allocation failure\n");
michael@0: 					      return;
michael@0: 					}
michael@0: 					continue;
michael@0: 				}
michael@0: 				fprintf(file, ";; ns_sprintrr: %s\n",
michael@0: 					strerror(errno));
michael@0: 				goto cleanup;
michael@0: 			}
michael@0: 			fputs(buf, file);
michael@0: 			fputc('\n', file);
michael@0: 		}
michael@0: 		rrnum++;
michael@0: 	}
michael@0:  cleanup:
michael@0: 	if (buf != NULL)
michael@0: 		free(buf);
michael@0: }
michael@0: 
michael@0: /*
michael@0:  * Print the contents of a query.
michael@0:  * This is intended to be primarily a debugging routine.
michael@0:  */
michael@0: void
michael@0: res_pquery(const res_state statp, const u_char *msg, int len, FILE *file) {
michael@0: 	ns_msg handle;
michael@0: 	int qdcount, ancount, nscount, arcount;
michael@0: 	u_int opcode, rcode, id;
michael@0: 
michael@0: 	if (ns_initparse(msg, len, &handle) < 0) {
michael@0: 		fprintf(file, ";; ns_initparse: %s\n", strerror(errno));
michael@0: 		return;
michael@0: 	}
michael@0: 	opcode = ns_msg_getflag(handle, ns_f_opcode);
michael@0: 	rcode = ns_msg_getflag(handle, ns_f_rcode);
michael@0: 	id = ns_msg_id(handle);
michael@0: 	qdcount = ns_msg_count(handle, ns_s_qd);
michael@0: 	ancount = ns_msg_count(handle, ns_s_an);
michael@0: 	nscount = ns_msg_count(handle, ns_s_ns);
michael@0: 	arcount = ns_msg_count(handle, ns_s_ar);
michael@0: 
michael@0: 	/*
michael@0: 	 * Print header fields.
michael@0: 	 */
michael@0: 	if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEADX) || rcode)
michael@0: 		fprintf(file,
michael@0: 			";; ->>HEADER<<- opcode: %s, status: %s, id: %d\n",
michael@0: 			_res_opcodes[opcode], p_rcode((int)rcode), id);
michael@0: 	if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEADX))
michael@0: 		putc(';', file);
michael@0: 	if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEAD2)) {
michael@0: 		fprintf(file, "; flags:");
michael@0: 		if (ns_msg_getflag(handle, ns_f_qr))
michael@0: 			fprintf(file, " qr");
michael@0: 		if (ns_msg_getflag(handle, ns_f_aa))
michael@0: 			fprintf(file, " aa");
michael@0: 		if (ns_msg_getflag(handle, ns_f_tc))
michael@0: 			fprintf(file, " tc");
michael@0: 		if (ns_msg_getflag(handle, ns_f_rd))
michael@0: 			fprintf(file, " rd");
michael@0: 		if (ns_msg_getflag(handle, ns_f_ra))
michael@0: 			fprintf(file, " ra");
michael@0: 		if (ns_msg_getflag(handle, ns_f_z))
michael@0: 			fprintf(file, " ??");
michael@0: 		if (ns_msg_getflag(handle, ns_f_ad))
michael@0: 			fprintf(file, " ad");
michael@0: 		if (ns_msg_getflag(handle, ns_f_cd))
michael@0: 			fprintf(file, " cd");
michael@0: 	}
michael@0: 	if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEAD1)) {
michael@0: 		fprintf(file, "; %s: %d",
michael@0: 			p_section(ns_s_qd, (int)opcode), qdcount);
michael@0: 		fprintf(file, ", %s: %d",
michael@0: 			p_section(ns_s_an, (int)opcode), ancount);
michael@0: 		fprintf(file, ", %s: %d",
michael@0: 			p_section(ns_s_ns, (int)opcode), nscount);
michael@0: 		fprintf(file, ", %s: %d",
michael@0: 			p_section(ns_s_ar, (int)opcode), arcount);
michael@0: 	}
michael@0: 	if ((!statp->pfcode) || (statp->pfcode &
michael@0: 		(RES_PRF_HEADX | RES_PRF_HEAD2 | RES_PRF_HEAD1))) {
michael@0: 		putc('\n',file);
michael@0: 	}
michael@0: 	/*
michael@0: 	 * Print the various sections.
michael@0: 	 */
michael@0: 	do_section(statp, &handle, ns_s_qd, RES_PRF_QUES, file);
michael@0: 	do_section(statp, &handle, ns_s_an, RES_PRF_ANS, file);
michael@0: 	do_section(statp, &handle, ns_s_ns, RES_PRF_AUTH, file);
michael@0: 	do_section(statp, &handle, ns_s_ar, RES_PRF_ADD, file);
michael@0: 	if (qdcount == 0 && ancount == 0 &&
michael@0: 	    nscount == 0 && arcount == 0)
michael@0: 		putc('\n', file);
michael@0: }
michael@0: 
michael@0: #ifndef MOZILLA_NECKO_EXCLUDE_CODE
michael@0: const u_char *
michael@0: p_cdnname(const u_char *cp, const u_char *msg, int len, FILE *file) {
michael@0: 	char name[MAXDNAME];
michael@0: 	int n;
michael@0: 
michael@0: 	if ((n = dn_expand(msg, msg + len, cp, name, sizeof name)) < 0)
michael@0: 		return (NULL);
michael@0: 	if (name[0] == '\0')
michael@0: 		putc('.', file);
michael@0: 	else
michael@0: 		fputs(name, file);
michael@0: 	return (cp + n);
michael@0: }
michael@0: 
michael@0: const u_char *
michael@0: p_cdname(const u_char *cp, const u_char *msg, FILE *file) {
michael@0: 	return (p_cdnname(cp, msg, PACKETSZ, file));
michael@0: }
michael@0: 
michael@0: /* Return a fully-qualified domain name from a compressed name (with
michael@0:    length supplied).  */
michael@0: 
michael@0: const u_char *
michael@0: p_fqnname(cp, msg, msglen, name, namelen)
michael@0: 	const u_char *cp, *msg;
michael@0: 	int msglen;
michael@0: 	char *name;
michael@0: 	int namelen;
michael@0: {
michael@0: 	int n, newlen;
michael@0: 
michael@0: 	if ((n = dn_expand(msg, cp + msglen, cp, name, namelen)) < 0)
michael@0: 		return (NULL);
michael@0: 	newlen = strlen(name);
michael@0: 	if (newlen == 0 || name[newlen - 1] != '.') {
michael@0: 		if (newlen + 1 >= namelen)	/* Lack space for final dot */
michael@0: 			return (NULL);
michael@0: 		else
michael@0: 			strcpy(name + newlen, ".");
michael@0: 	}
michael@0: 	return (cp + n);
michael@0: }
michael@0: 
michael@0: /* XXX:	the rest of these functions need to become length-limited, too. */
michael@0: 
michael@0: const u_char *
michael@0: p_fqname(const u_char *cp, const u_char *msg, FILE *file) {
michael@0: 	char name[MAXDNAME];
michael@0: 	const u_char *n;
michael@0: 
michael@0: 	n = p_fqnname(cp, msg, MAXCDNAME, name, sizeof name);
michael@0: 	if (n == NULL)
michael@0: 		return (NULL);
michael@0: 	fputs(name, file);
michael@0: 	return (n);
michael@0: }
michael@0: #endif
michael@0: 
michael@0: /*
michael@0:  * Names of RR classes and qclasses.  Classes and qclasses are the same, except
michael@0:  * that C_ANY is a qclass but not a class.  (You can ask for records of class
michael@0:  * C_ANY, but you can't have any records of that class in the database.)
michael@0:  */
michael@0: const struct res_sym __p_class_syms[] = {
michael@0: 	{C_IN,		"IN",		(char *)0},
michael@0: 	{C_CHAOS,	"CH",		(char *)0},
michael@0: 	{C_CHAOS,	"CHAOS",	(char *)0},
michael@0: 	{C_HS,		"HS",		(char *)0},
michael@0: 	{C_HS,		"HESIOD",	(char *)0},
michael@0: 	{C_ANY,		"ANY",		(char *)0},
michael@0: 	{C_NONE,	"NONE",		(char *)0},
michael@0: 	{C_IN, 		(char *)0,	(char *)0}
michael@0: };
michael@0: 
michael@0: /*
michael@0:  * Names of message sections.
michael@0:  */
michael@0: const struct res_sym __p_default_section_syms[] = {
michael@0: 	{ns_s_qd,	"QUERY",	(char *)0},
michael@0: 	{ns_s_an,	"ANSWER",	(char *)0},
michael@0: 	{ns_s_ns,	"AUTHORITY",	(char *)0},
michael@0: 	{ns_s_ar,	"ADDITIONAL",	(char *)0},
michael@0: 	{0,             (char *)0,	(char *)0}
michael@0: };
michael@0: 
michael@0: const struct res_sym __p_update_section_syms[] = {
michael@0: 	{S_ZONE,	"ZONE",		(char *)0},
michael@0: 	{S_PREREQ,	"PREREQUISITE",	(char *)0},
michael@0: 	{S_UPDATE,	"UPDATE",	(char *)0},
michael@0: 	{S_ADDT,	"ADDITIONAL",	(char *)0},
michael@0: 	{0,             (char *)0,	(char *)0}
michael@0: };
michael@0: 
michael@0: const struct res_sym __p_key_syms[] = {
michael@0: 	{NS_ALG_MD5RSA,		"RSA",		"RSA KEY with MD5 hash"},
michael@0: 	{NS_ALG_DH,		"DH",		"Diffie Hellman"},
michael@0: 	{NS_ALG_DSA,		"DSA",		"Digital Signature Algorithm"},
michael@0: 	{NS_ALG_EXPIRE_ONLY,	"EXPIREONLY",	"No algorithm"},
michael@0: 	{NS_ALG_PRIVATE_OID,	"PRIVATE",	"Algorithm obtained from OID"},
michael@0: 	{0,			NULL,		NULL}
michael@0: };
michael@0: 
michael@0: const struct res_sym __p_cert_syms[] = {
michael@0: 	{cert_t_pkix,	"PKIX",		"PKIX (X.509v3) Certificate"},
michael@0: 	{cert_t_spki,	"SPKI",		"SPKI certificate"},
michael@0: 	{cert_t_pgp,	"PGP",		"PGP certificate"},
michael@0: 	{cert_t_url,	"URL",		"URL Private"},
michael@0: 	{cert_t_oid,	"OID",		"OID Private"},
michael@0: 	{0,		NULL,		NULL}
michael@0: };
michael@0: 
michael@0: /*
michael@0:  * Names of RR types and qtypes.  Types and qtypes are the same, except
michael@0:  * that T_ANY is a qtype but not a type.  (You can ask for records of type
michael@0:  * T_ANY, but you can't have any records of that type in the database.)
michael@0:  */
michael@0: const struct res_sym __p_type_syms[] = {
michael@0: 	{ns_t_a,	"A",		"address"},
michael@0: 	{ns_t_ns,	"NS",		"name server"},
michael@0: 	{ns_t_md,	"MD",		"mail destination (deprecated)"},
michael@0: 	{ns_t_mf,	"MF",		"mail forwarder (deprecated)"},
michael@0: 	{ns_t_cname,	"CNAME",	"canonical name"},
michael@0: 	{ns_t_soa,	"SOA",		"start of authority"},
michael@0: 	{ns_t_mb,	"MB",		"mailbox"},
michael@0: 	{ns_t_mg,	"MG",		"mail group member"},
michael@0: 	{ns_t_mr,	"MR",		"mail rename"},
michael@0: 	{ns_t_null,	"NULL",		"null"},
michael@0: 	{ns_t_wks,	"WKS",		"well-known service (deprecated)"},
michael@0: 	{ns_t_ptr,	"PTR",		"domain name pointer"},
michael@0: 	{ns_t_hinfo,	"HINFO",	"host information"},
michael@0: 	{ns_t_minfo,	"MINFO",	"mailbox information"},
michael@0: 	{ns_t_mx,	"MX",		"mail exchanger"},
michael@0: 	{ns_t_txt,	"TXT",		"text"},
michael@0: 	{ns_t_rp,	"RP",		"responsible person"},
michael@0: 	{ns_t_afsdb,	"AFSDB",	"DCE or AFS server"},
michael@0: 	{ns_t_x25,	"X25",		"X25 address"},
michael@0: 	{ns_t_isdn,	"ISDN",		"ISDN address"},
michael@0: 	{ns_t_rt,	"RT",		"router"},
michael@0: 	{ns_t_nsap,	"NSAP",		"nsap address"},
michael@0: 	{ns_t_nsap_ptr,	"NSAP_PTR",	"domain name pointer"},
michael@0: 	{ns_t_sig,	"SIG",		"signature"},
michael@0: 	{ns_t_key,	"KEY",		"key"},
michael@0: 	{ns_t_px,	"PX",		"mapping information"},
michael@0: 	{ns_t_gpos,	"GPOS",		"geographical position (withdrawn)"},
michael@0: 	{ns_t_aaaa,	"AAAA",		"IPv6 address"},
michael@0: 	{ns_t_loc,	"LOC",		"location"},
michael@0: 	{ns_t_nxt,	"NXT",		"next valid name (unimplemented)"},
michael@0: 	{ns_t_eid,	"EID",		"endpoint identifier (unimplemented)"},
michael@0: 	{ns_t_nimloc,	"NIMLOC",	"NIMROD locator (unimplemented)"},
michael@0: 	{ns_t_srv,	"SRV",		"server selection"},
michael@0: 	{ns_t_atma,	"ATMA",		"ATM address (unimplemented)"},
michael@0: 	{ns_t_tkey,	"TKEY",		"tkey"},
michael@0: 	{ns_t_tsig,	"TSIG",		"transaction signature"},
michael@0: 	{ns_t_ixfr,	"IXFR",		"incremental zone transfer"},
michael@0: 	{ns_t_axfr,	"AXFR",		"zone transfer"},
michael@0: 	{ns_t_zxfr,	"ZXFR",		"compressed zone transfer"},
michael@0: 	{ns_t_mailb,	"MAILB",	"mailbox-related data (deprecated)"},
michael@0: 	{ns_t_maila,	"MAILA",	"mail agent (deprecated)"},
michael@0: 	{ns_t_naptr,	"NAPTR",	"URN Naming Authority"},
michael@0: 	{ns_t_kx,	"KX",		"Key Exchange"},
michael@0: 	{ns_t_cert,	"CERT",		"Certificate"},
michael@0: 	{ns_t_a6,	"A6",		"IPv6 Address"},
michael@0: 	{ns_t_dname,	"DNAME",	"dname"},
michael@0: 	{ns_t_sink,	"SINK",		"Kitchen Sink (experimental)"},
michael@0: 	{ns_t_opt,	"OPT",		"EDNS Options"},
michael@0: 	{ns_t_any,	"ANY",		"\"any\""},
michael@0: 	{0, 		NULL,		NULL}
michael@0: };
michael@0: 
michael@0: /*
michael@0:  * Names of DNS rcodes.
michael@0:  */
michael@0: const struct res_sym __p_rcode_syms[] = {
michael@0: 	{ns_r_noerror,	"NOERROR",		"no error"},
michael@0: 	{ns_r_formerr,	"FORMERR",		"format error"},
michael@0: 	{ns_r_servfail,	"SERVFAIL",		"server failed"},
michael@0: 	{ns_r_nxdomain,	"NXDOMAIN",		"no such domain name"},
michael@0: 	{ns_r_notimpl,	"NOTIMP",		"not implemented"},
michael@0: 	{ns_r_refused,	"REFUSED",		"refused"},
michael@0: 	{ns_r_yxdomain,	"YXDOMAIN",		"domain name exists"},
michael@0: 	{ns_r_yxrrset,	"YXRRSET",		"rrset exists"},
michael@0: 	{ns_r_nxrrset,	"NXRRSET",		"rrset doesn't exist"},
michael@0: 	{ns_r_notauth,	"NOTAUTH",		"not authoritative"},
michael@0: 	{ns_r_notzone,	"NOTZONE",		"Not in zone"},
michael@0: 	{ns_r_max,	"",			""},
michael@0: 	{ns_r_badsig,	"BADSIG",		"bad signature"},
michael@0: 	{ns_r_badkey,	"BADKEY",		"bad key"},
michael@0: 	{ns_r_badtime,	"BADTIME",		"bad time"},
michael@0: 	{0, 		NULL,			NULL}
michael@0: };
michael@0: 
michael@0: int
michael@0: sym_ston(const struct res_sym *syms, const char *name, int *success) {
michael@0: 	for (; syms->name != 0; syms++) {
michael@0: 		if (strcasecmp (name, syms->name) == 0) {
michael@0: 			if (success)
michael@0: 				*success = 1;
michael@0: 			return (syms->number);
michael@0: 		}
michael@0: 	}
michael@0: 	if (success)
michael@0: 		*success = 0;
michael@0: 	return (syms->number);		/* The default value. */
michael@0: }
michael@0: 
michael@0: const char *
michael@0: sym_ntos(const struct res_sym *syms, int number, int *success) {
michael@0: 	static char unname[20];
michael@0: 
michael@0: 	for (; syms->name != 0; syms++) {
michael@0: 		if (number == syms->number) {
michael@0: 			if (success)
michael@0: 				*success = 1;
michael@0: 			return (syms->name);
michael@0: 		}
michael@0: 	}
michael@0: 
michael@0: 	sprintf(unname, "%d", number);		/* XXX nonreentrant */
michael@0: 	if (success)
michael@0: 		*success = 0;
michael@0: 	return (unname);
michael@0: }
michael@0: 
michael@0: const char *
michael@0: sym_ntop(const struct res_sym *syms, int number, int *success) {
michael@0: 	static char unname[20];
michael@0: 
michael@0: 	for (; syms->name != 0; syms++) {
michael@0: 		if (number == syms->number) {
michael@0: 			if (success)
michael@0: 				*success = 1;
michael@0: 			return (syms->humanname);
michael@0: 		}
michael@0: 	}
michael@0: 	sprintf(unname, "%d", number);		/* XXX nonreentrant */
michael@0: 	if (success)
michael@0: 		*success = 0;
michael@0: 	return (unname);
michael@0: }
michael@0: 
michael@0: /*
michael@0:  * Return a string for the type.
michael@0:  */
michael@0: const char *
michael@0: p_type(int type) {
michael@0: 	int success;
michael@0: 	const char *result;
michael@0: 	static char typebuf[20];
michael@0: 
michael@0: 	result = sym_ntos(__p_type_syms, type, &success);
michael@0: 	if (success)
michael@0: 		return (result);
michael@0: 	if (type < 0 || type > 0xffff)
michael@0: 		return ("BADTYPE");
michael@0: 	sprintf(typebuf, "TYPE%d", type);
michael@0: 	return (typebuf);
michael@0: }
michael@0: 
michael@0: /*
michael@0:  * Return a string for the type.
michael@0:  */
michael@0: const char *
michael@0: p_section(int section, int opcode) {
michael@0: 	const struct res_sym *symbols;
michael@0: 
michael@0: 	switch (opcode) {
michael@0: 	case ns_o_update:
michael@0: 		symbols = __p_update_section_syms;
michael@0: 		break;
michael@0: 	default:
michael@0: 		symbols = __p_default_section_syms;
michael@0: 		break;
michael@0: 	}
michael@0: 	return (sym_ntos(symbols, section, (int *)0));
michael@0: }
michael@0: 
michael@0: /*
michael@0:  * Return a mnemonic for class.
michael@0:  */
michael@0: const char *
michael@0: p_class(int class) {
michael@0: 	int success;
michael@0: 	const char *result;
michael@0: 	static char classbuf[20];
michael@0: 
michael@0: 	result = sym_ntos(__p_class_syms, class, &success);
michael@0: 	if (success)
michael@0: 		return (result);
michael@0: 	if (class < 0 || class > 0xffff)
michael@0: 		return ("BADCLASS");
michael@0: 	sprintf(classbuf, "CLASS%d", class);
michael@0: 	return (classbuf);
michael@0: }
michael@0: 
michael@0: /*
michael@0:  * Return a mnemonic for an option
michael@0:  */
michael@0: const char *
michael@0: p_option(u_long option) {
michael@0: 	static char nbuf[40];
michael@0: 
michael@0: 	switch (option) {
michael@0: 	case RES_INIT:		return "init";
michael@0: 	case RES_DEBUG:		return "debug";
michael@0: 	case RES_AAONLY:	return "aaonly(unimpl)";
michael@0: 	case RES_USEVC:		return "usevc";
michael@0: 	case RES_PRIMARY:	return "primry(unimpl)";
michael@0: 	case RES_IGNTC:		return "igntc";
michael@0: 	case RES_RECURSE:	return "recurs";
michael@0: 	case RES_DEFNAMES:	return "defnam";
michael@0: 	case RES_STAYOPEN:	return "styopn";
michael@0: 	case RES_DNSRCH:	return "dnsrch";
michael@0: 	case RES_INSECURE1:	return "insecure1";
michael@0: 	case RES_INSECURE2:	return "insecure2";
michael@0: 	case RES_NOALIASES:	return "noaliases";
michael@0: 	case RES_USE_INET6:	return "inet6";
michael@0: #ifdef RES_USE_EDNS0	/* KAME extension */
michael@0: 	case RES_USE_EDNS0:	return "edns0";
michael@0: #endif
michael@0: #ifdef RES_USE_DNAME
michael@0: 	case RES_USE_DNAME:	return "dname";
michael@0: #endif
michael@0: #ifdef RES_USE_DNSSEC
michael@0: 	case RES_USE_DNSSEC:	return "dnssec";
michael@0: #endif
michael@0: #ifdef RES_NOTLDQUERY
michael@0: 	case RES_NOTLDQUERY:	return "no-tld-query";
michael@0: #endif
michael@0: #ifdef RES_NO_NIBBLE2
michael@0: 	case RES_NO_NIBBLE2:	return "no-nibble2";
michael@0: #endif
michael@0: 				/* XXX nonreentrant */
michael@0: 	default:		sprintf(nbuf, "?0x%lx?", (u_long)option);
michael@0: 				return (nbuf);
michael@0: 	}
michael@0: }
michael@0: 
michael@0: #ifndef MOZILLA_NECKO_EXCLUDE_CODE
michael@0: /*
michael@0:  * Return a mnemonic for a time to live.
michael@0:  */
michael@0: const char *
michael@0: p_time(u_int32_t value) {
michael@0: 	static char nbuf[40];		/* XXX nonreentrant */
michael@0: 
michael@0: 	if (ns_format_ttl((u_long)value, nbuf, sizeof nbuf) < 0)
michael@0: 		sprintf(nbuf, "%u", value);
michael@0: 	return (nbuf);
michael@0: }
michael@0: #endif
michael@0: 
michael@0: /*
michael@0:  * Return a string for the rcode.
michael@0:  */
michael@0: const char *
michael@0: p_rcode(int rcode) {
michael@0: 	return (sym_ntos(__p_rcode_syms, rcode, (int *)0));
michael@0: }
michael@0: 
michael@0: #ifndef MOZILLA_NECKO_EXCLUDE_CODE
michael@0: /*
michael@0:  * Return a string for a res_sockaddr_union.
michael@0:  */
michael@0: const char *
michael@0: p_sockun(union res_sockaddr_union u, char *buf, size_t size) {
michael@0: 	char ret[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:123.123.123.123"];
michael@0: 
michael@0: 	switch (u.sin.sin_family) {
michael@0: 	case AF_INET:
michael@0: 		inet_ntop(AF_INET, &u.sin.sin_addr, ret, sizeof ret);
michael@0: 		break;
michael@0: #ifdef HAS_INET6_STRUCTS
michael@0: 	case AF_INET6:
michael@0: 		inet_ntop(AF_INET6, &u.sin6.sin6_addr, ret, sizeof ret);
michael@0: 		break;
michael@0: #endif
michael@0: 	default:
michael@0: 		sprintf(ret, "[af%d]", u.sin.sin_family);
michael@0: 		break;
michael@0: 	}
michael@0: 	if (size > 0U) {
michael@0: 		strncpy(buf, ret, size - 1);
michael@0: 		buf[size - 1] = '0';
michael@0: 	}
michael@0: 	return (buf);
michael@0: }
michael@0: #endif
michael@0: 
michael@0: /*
michael@0:  * routines to convert between on-the-wire RR format and zone file format.
michael@0:  * Does not contain conversion to/from decimal degrees; divide or multiply
michael@0:  * by 60*60*1000 for that.
michael@0:  */
michael@0: 
michael@0: static const unsigned int poweroften[10] = {1, 10, 100, 1000, 10000, 100000,
michael@0: 				      1000000,10000000,100000000,1000000000};
michael@0: 
michael@0: /* takes an XeY precision/size value, returns a string representation. */
michael@0: static const char *
michael@0: precsize_ntoa(prec)
michael@0: 	u_int32_t prec;
michael@0: {
michael@0: 	static char retbuf[sizeof "90000000.00"];	/* XXX nonreentrant */
michael@0: 	unsigned long val;
michael@0: 	int mantissa, exponent;
michael@0: 
michael@0: 	mantissa = (int)((prec >> 4) & 0x0f) % 10;
michael@0: 	exponent = (int)((prec >> 0) & 0x0f) % 10;
michael@0: 
michael@0: 	val = mantissa * poweroften[exponent];
michael@0: 
michael@0: 	(void) sprintf(retbuf, "%lu.%.2lu", val/100, val%100);
michael@0: 	return (retbuf);
michael@0: }
michael@0: 
michael@0: #ifndef MOZILLA_NECKO_EXCLUDE_CODE
michael@0: /* converts ascii size/precision X * 10**Y(cm) to 0xXY.  moves pointer. */
michael@0: static u_int8_t
michael@0: precsize_aton(const char **strptr) {
michael@0: 	unsigned int mval = 0, cmval = 0;
michael@0: 	u_int8_t retval = 0;
michael@0: 	const char *cp;
michael@0: 	int exponent;
michael@0: 	int mantissa;
michael@0: 
michael@0: 	cp = *strptr;
michael@0: 
michael@0: 	while (isdigit((unsigned char)*cp))
michael@0: 		mval = mval * 10 + (*cp++ - '0');
michael@0: 
michael@0: 	if (*cp == '.') {		/* centimeters */
michael@0: 		cp++;
michael@0: 		if (isdigit((unsigned char)*cp)) {
michael@0: 			cmval = (*cp++ - '0') * 10;
michael@0: 			if (isdigit((unsigned char)*cp)) {
michael@0: 				cmval += (*cp++ - '0');
michael@0: 			}
michael@0: 		}
michael@0: 	}
michael@0: 	cmval = (mval * 100) + cmval;
michael@0: 
michael@0: 	for (exponent = 0; exponent < 9; exponent++)
michael@0: 		if (cmval < poweroften[exponent+1])
michael@0: 			break;
michael@0: 
michael@0: 	mantissa = cmval / poweroften[exponent];
michael@0: 	if (mantissa > 9)
michael@0: 		mantissa = 9;
michael@0: 
michael@0: 	retval = (mantissa << 4) | exponent;
michael@0: 
michael@0: 	*strptr = cp;
michael@0: 
michael@0: 	return (retval);
michael@0: }
michael@0: 
michael@0: /* converts ascii lat/lon to unsigned encoded 32-bit number.  moves pointer. */
michael@0: static u_int32_t
michael@0: latlon2ul(const char **latlonstrptr, int *which) {
michael@0: 	const char *cp;
michael@0: 	u_int32_t retval;
michael@0: 	int deg = 0, min = 0, secs = 0, secsfrac = 0;
michael@0: 
michael@0: 	cp = *latlonstrptr;
michael@0: 
michael@0: 	while (isdigit((unsigned char)*cp))
michael@0: 		deg = deg * 10 + (*cp++ - '0');
michael@0: 
michael@0: 	while (isspace((unsigned char)*cp))
michael@0: 		cp++;
michael@0: 
michael@0: 	if (!(isdigit((unsigned char)*cp)))
michael@0: 		goto fndhemi;
michael@0: 
michael@0: 	while (isdigit((unsigned char)*cp))
michael@0: 		min = min * 10 + (*cp++ - '0');
michael@0: 
michael@0: 	while (isspace((unsigned char)*cp))
michael@0: 		cp++;
michael@0: 
michael@0: 	if (!(isdigit((unsigned char)*cp)))
michael@0: 		goto fndhemi;
michael@0: 
michael@0: 	while (isdigit((unsigned char)*cp))
michael@0: 		secs = secs * 10 + (*cp++ - '0');
michael@0: 
michael@0: 	if (*cp == '.') {		/* decimal seconds */
michael@0: 		cp++;
michael@0: 		if (isdigit((unsigned char)*cp)) {
michael@0: 			secsfrac = (*cp++ - '0') * 100;
michael@0: 			if (isdigit((unsigned char)*cp)) {
michael@0: 				secsfrac += (*cp++ - '0') * 10;
michael@0: 				if (isdigit((unsigned char)*cp)) {
michael@0: 					secsfrac += (*cp++ - '0');
michael@0: 				}
michael@0: 			}
michael@0: 		}
michael@0: 	}
michael@0: 
michael@0: 	while (!isspace((unsigned char)*cp))	/* if any trailing garbage */
michael@0: 		cp++;
michael@0: 
michael@0: 	while (isspace((unsigned char)*cp))
michael@0: 		cp++;
michael@0: 
michael@0:  fndhemi:
michael@0: 	switch (*cp) {
michael@0: 	case 'N': case 'n':
michael@0: 	case 'E': case 'e':
michael@0: 		retval = ((unsigned)1<<31)
michael@0: 			+ (((((deg * 60) + min) * 60) + secs) * 1000)
michael@0: 			+ secsfrac;
michael@0: 		break;
michael@0: 	case 'S': case 's':
michael@0: 	case 'W': case 'w':
michael@0: 		retval = ((unsigned)1<<31)
michael@0: 			- (((((deg * 60) + min) * 60) + secs) * 1000)
michael@0: 			- secsfrac;
michael@0: 		break;
michael@0: 	default:
michael@0: 		retval = 0;	/* invalid value -- indicates error */
michael@0: 		break;
michael@0: 	}
michael@0: 
michael@0: 	switch (*cp) {
michael@0: 	case 'N': case 'n':
michael@0: 	case 'S': case 's':
michael@0: 		*which = 1;	/* latitude */
michael@0: 		break;
michael@0: 	case 'E': case 'e':
michael@0: 	case 'W': case 'w':
michael@0: 		*which = 2;	/* longitude */
michael@0: 		break;
michael@0: 	default:
michael@0: 		*which = 0;	/* error */
michael@0: 		break;
michael@0: 	}
michael@0: 
michael@0: 	cp++;			/* skip the hemisphere */
michael@0: 
michael@0: 	while (!isspace((unsigned char)*cp))	/* if any trailing garbage */
michael@0: 		cp++;
michael@0: 
michael@0: 	while (isspace((unsigned char)*cp))	/* move to next field */
michael@0: 		cp++;
michael@0: 
michael@0: 	*latlonstrptr = cp;
michael@0: 
michael@0: 	return (retval);
michael@0: }
michael@0: 
michael@0: /* converts a zone file representation in a string to an RDATA on-the-wire
michael@0:  * representation. */
michael@0: int
michael@0: loc_aton(ascii, binary)
michael@0: 	const char *ascii;
michael@0: 	u_char *binary;
michael@0: {
michael@0: 	const char *cp, *maxcp;
michael@0: 	u_char *bcp;
michael@0: 
michael@0: 	u_int32_t latit = 0, longit = 0, alt = 0;
michael@0: 	u_int32_t lltemp1 = 0, lltemp2 = 0;
michael@0: 	int altmeters = 0, altfrac = 0, altsign = 1;
michael@0: 	u_int8_t hp = 0x16;	/* default = 1e6 cm = 10000.00m = 10km */
michael@0: 	u_int8_t vp = 0x13;	/* default = 1e3 cm = 10.00m */
michael@0: 	u_int8_t siz = 0x12;	/* default = 1e2 cm = 1.00m */
michael@0: 	int which1 = 0, which2 = 0;
michael@0: 
michael@0: 	cp = ascii;
michael@0: 	maxcp = cp + strlen(ascii);
michael@0: 
michael@0: 	lltemp1 = latlon2ul(&cp, &which1);
michael@0: 
michael@0: 	lltemp2 = latlon2ul(&cp, &which2);
michael@0: 
michael@0: 	switch (which1 + which2) {
michael@0: 	case 3:			/* 1 + 2, the only valid combination */
michael@0: 		if ((which1 == 1) && (which2 == 2)) { /* normal case */
michael@0: 			latit = lltemp1;
michael@0: 			longit = lltemp2;
michael@0: 		} else if ((which1 == 2) && (which2 == 1)) { /* reversed */
michael@0: 			longit = lltemp1;
michael@0: 			latit = lltemp2;
michael@0: 		} else {	/* some kind of brokenness */
michael@0: 			return (0);
michael@0: 		}
michael@0: 		break;
michael@0: 	default:		/* we didn't get one of each */
michael@0: 		return (0);
michael@0: 	}
michael@0: 
michael@0: 	/* altitude */
michael@0: 	if (*cp == '-') {
michael@0: 		altsign = -1;
michael@0: 		cp++;
michael@0: 	}
michael@0: 
michael@0: 	if (*cp == '+')
michael@0: 		cp++;
michael@0: 
michael@0: 	while (isdigit((unsigned char)*cp))
michael@0: 		altmeters = altmeters * 10 + (*cp++ - '0');
michael@0: 
michael@0: 	if (*cp == '.') {		/* decimal meters */
michael@0: 		cp++;
michael@0: 		if (isdigit((unsigned char)*cp)) {
michael@0: 			altfrac = (*cp++ - '0') * 10;
michael@0: 			if (isdigit((unsigned char)*cp)) {
michael@0: 				altfrac += (*cp++ - '0');
michael@0: 			}
michael@0: 		}
michael@0: 	}
michael@0: 
michael@0: 	alt = (10000000 + (altsign * (altmeters * 100 + altfrac)));
michael@0: 
michael@0: 	while (!isspace((unsigned char)*cp) && (cp < maxcp)) /* if trailing garbage or m */
michael@0: 		cp++;
michael@0: 
michael@0: 	while (isspace((unsigned char)*cp) && (cp < maxcp))
michael@0: 		cp++;
michael@0: 
michael@0: 	if (cp >= maxcp)
michael@0: 		goto defaults;
michael@0: 
michael@0: 	siz = precsize_aton(&cp);
michael@0: 
michael@0: 	while (!isspace((unsigned char)*cp) && (cp < maxcp))	/* if trailing garbage or m */
michael@0: 		cp++;
michael@0: 
michael@0: 	while (isspace((unsigned char)*cp) && (cp < maxcp))
michael@0: 		cp++;
michael@0: 
michael@0: 	if (cp >= maxcp)
michael@0: 		goto defaults;
michael@0: 
michael@0: 	hp = precsize_aton(&cp);
michael@0: 
michael@0: 	while (!isspace((unsigned char)*cp) && (cp < maxcp))	/* if trailing garbage or m */
michael@0: 		cp++;
michael@0: 
michael@0: 	while (isspace((unsigned char)*cp) && (cp < maxcp))
michael@0: 		cp++;
michael@0: 
michael@0: 	if (cp >= maxcp)
michael@0: 		goto defaults;
michael@0: 
michael@0: 	vp = precsize_aton(&cp);
michael@0: 
michael@0:  defaults:
michael@0: 
michael@0: 	bcp = binary;
michael@0: 	*bcp++ = (u_int8_t) 0;	/* version byte */
michael@0: 	*bcp++ = siz;
michael@0: 	*bcp++ = hp;
michael@0: 	*bcp++ = vp;
michael@0: 	PUTLONG(latit,bcp);
michael@0: 	PUTLONG(longit,bcp);
michael@0: 	PUTLONG(alt,bcp);
michael@0: 
michael@0: 	return (16);		/* size of RR in octets */
michael@0: }
michael@0: #endif
michael@0: 
michael@0: /* takes an on-the-wire LOC RR and formats it in a human readable format. */
michael@0: const char *
michael@0: loc_ntoa(binary, ascii)
michael@0: 	const u_char *binary;
michael@0: 	char *ascii;
michael@0: {
michael@0: 	static const char *error = "?";
michael@0: 	static char tmpbuf[sizeof
michael@0: "1000 60 60.000 N 1000 60 60.000 W -12345678.00m 90000000.00m 90000000.00m 90000000.00m"];
michael@0: 	const u_char *cp = binary;
michael@0: 
michael@0: 	int latdeg, latmin, latsec, latsecfrac;
michael@0: 	int longdeg, longmin, longsec, longsecfrac;
michael@0: 	char northsouth, eastwest;
michael@0: 	const char *altsign;
michael@0: 	int altmeters, altfrac;
michael@0: 
michael@0: 	const u_int32_t referencealt = 100000 * 100;
michael@0: 
michael@0: 	int32_t latval, longval, altval;
michael@0: 	u_int32_t templ;
michael@0: 	u_int8_t sizeval, hpval, vpval, versionval;
michael@0: 
michael@0: 	char *sizestr, *hpstr, *vpstr;
michael@0: 
michael@0: 	versionval = *cp++;
michael@0: 
michael@0: 	if (ascii == NULL)
michael@0: 		ascii = tmpbuf;
michael@0: 
michael@0: 	if (versionval) {
michael@0: 		(void) sprintf(ascii, "; error: unknown LOC RR version");
michael@0: 		return (ascii);
michael@0: 	}
michael@0: 
michael@0: 	sizeval = *cp++;
michael@0: 
michael@0: 	hpval = *cp++;
michael@0: 	vpval = *cp++;
michael@0: 
michael@0: 	GETLONG(templ, cp);
michael@0: 	latval = (templ - ((unsigned)1<<31));
michael@0: 
michael@0: 	GETLONG(templ, cp);
michael@0: 	longval = (templ - ((unsigned)1<<31));
michael@0: 
michael@0: 	GETLONG(templ, cp);
michael@0: 	if (templ < referencealt) { /* below WGS 84 spheroid */
michael@0: 		altval = referencealt - templ;
michael@0: 		altsign = "-";
michael@0: 	} else {
michael@0: 		altval = templ - referencealt;
michael@0: 		altsign = "";
michael@0: 	}
michael@0: 
michael@0: 	if (latval < 0) {
michael@0: 		northsouth = 'S';
michael@0: 		latval = -latval;
michael@0: 	} else
michael@0: 		northsouth = 'N';
michael@0: 
michael@0: 	latsecfrac = latval % 1000;
michael@0: 	latval = latval / 1000;
michael@0: 	latsec = latval % 60;
michael@0: 	latval = latval / 60;
michael@0: 	latmin = latval % 60;
michael@0: 	latval = latval / 60;
michael@0: 	latdeg = latval;
michael@0: 
michael@0: 	if (longval < 0) {
michael@0: 		eastwest = 'W';
michael@0: 		longval = -longval;
michael@0: 	} else
michael@0: 		eastwest = 'E';
michael@0: 
michael@0: 	longsecfrac = longval % 1000;
michael@0: 	longval = longval / 1000;
michael@0: 	longsec = longval % 60;
michael@0: 	longval = longval / 60;
michael@0: 	longmin = longval % 60;
michael@0: 	longval = longval / 60;
michael@0: 	longdeg = longval;
michael@0: 
michael@0: 	altfrac = altval % 100;
michael@0: 	altmeters = (altval / 100);
michael@0: 
michael@0: 	sizestr = strdup(precsize_ntoa((u_int32_t)sizeval));
michael@0: 	hpstr = strdup(precsize_ntoa((u_int32_t)hpval));
michael@0: 	vpstr = strdup(precsize_ntoa((u_int32_t)vpval));
michael@0: 
michael@0: 	sprintf(ascii,
michael@0: 	    "%d %.2d %.2d.%.3d %c %d %.2d %.2d.%.3d %c %s%d.%.2dm %sm %sm %sm",
michael@0: 		latdeg, latmin, latsec, latsecfrac, northsouth,
michael@0: 		longdeg, longmin, longsec, longsecfrac, eastwest,
michael@0: 		altsign, altmeters, altfrac,
michael@0: 		(sizestr != NULL) ? sizestr : error,
michael@0: 		(hpstr != NULL) ? hpstr : error,
michael@0: 		(vpstr != NULL) ? vpstr : error);
michael@0: 
michael@0: 	if (sizestr != NULL)
michael@0: 		free(sizestr);
michael@0: 	if (hpstr != NULL)
michael@0: 		free(hpstr);
michael@0: 	if (vpstr != NULL)
michael@0: 		free(vpstr);
michael@0: 
michael@0: 	return (ascii);
michael@0: }
michael@0: 
michael@0: 
michael@0: /* Return the number of DNS hierarchy levels in the name. */
michael@0: int
michael@0: dn_count_labels(const char *name) {
michael@0: 	int i, len, count;
michael@0: 
michael@0: 	len = strlen(name);
michael@0: 	for (i = 0, count = 0; i < len; i++) {
michael@0: 		/* XXX need to check for \. or use named's nlabels(). */
michael@0: 		if (name[i] == '.')
michael@0: 			count++;
michael@0: 	}
michael@0: 
michael@0: 	/* don't count initial wildcard */
michael@0: 	if (name[0] == '*')
michael@0: 		if (count)
michael@0: 			count--;
michael@0: 
michael@0: 	/* don't count the null label for root. */
michael@0: 	/* if terminating '.' not found, must adjust */
michael@0: 	/* count to include last label */
michael@0: 	if (len > 0 && name[len-1] != '.')
michael@0: 		count++;
michael@0: 	return (count);
michael@0: }
michael@0: 
michael@0: 
michael@0: /*
michael@0:  * Make dates expressed in seconds-since-Jan-1-1970 easy to read.
michael@0:  * SIG records are required to be printed like this, by the Secure DNS RFC.
michael@0:  */
michael@0: char *
michael@0: p_secstodate (u_long secs) {
michael@0: 	/* XXX nonreentrant */
michael@0: 	static char output[15];		/* YYYYMMDDHHMMSS and null */
michael@0: 	time_t myclock = secs;
michael@0: 	struct tm *mytime;
michael@0: #ifdef HAVE_TIME_R
michael@0: 	struct tm res;
michael@0: 
michael@0: 	mytime = gmtime_r(&myclock, &res);
michael@0: #else
michael@0: 	mytime = gmtime(&myclock);
michael@0: #endif
michael@0: 	mytime->tm_year += 1900;
michael@0: 	mytime->tm_mon += 1;
michael@0: 	sprintf(output, "%04d%02d%02d%02d%02d%02d",
michael@0: 		mytime->tm_year, mytime->tm_mon, mytime->tm_mday,
michael@0: 		mytime->tm_hour, mytime->tm_min, mytime->tm_sec);
michael@0: 	return (output);
michael@0: }
michael@0: 
michael@0: #ifndef MOZILLA_NECKO_EXCLUDE_CODE
michael@0: u_int16_t
michael@0: res_nametoclass(const char *buf, int *successp) {
michael@0: 	unsigned long result;
michael@0: 	char *endptr;
michael@0: 	int success;
michael@0: 
michael@0: 	result = sym_ston(__p_class_syms, buf, &success);
michael@0: 	if (success)
michael@0: 		goto done;
michael@0: 
michael@0: 	if (strncasecmp(buf, "CLASS", 5) != 0 ||
michael@0: 	    !isdigit((unsigned char)buf[5]))
michael@0: 		goto done;
michael@0: 	errno = 0;
michael@0: 	result = strtoul(buf + 5, &endptr, 10);
michael@0: 	if (errno == 0 && *endptr == '\0' && result <= 0xffffU)
michael@0: 		success = 1;
michael@0:  done:
michael@0: 	if (successp)
michael@0: 		*successp = success;
michael@0: 	return (u_int16_t)(result);
michael@0: }
michael@0: 
michael@0: u_int16_t
michael@0: res_nametotype(const char *buf, int *successp) {
michael@0: 	unsigned long result;
michael@0: 	char *endptr;
michael@0: 	int success;
michael@0: 
michael@0: 	result = sym_ston(__p_type_syms, buf, &success);
michael@0: 	if (success)
michael@0: 		goto done;
michael@0: 
michael@0: 	if (strncasecmp(buf, "type", 4) != 0 ||
michael@0: 	    !isdigit((unsigned char)buf[4]))
michael@0: 		goto done;
michael@0: 	errno = 0;
michael@0: 	result = strtoul(buf + 4, &endptr, 10);
michael@0: 	if (errno == 0 && *endptr == '\0' && result <= 0xffffU)
michael@0: 		success = 1;
michael@0:  done:
michael@0: 	if (successp)
michael@0: 		*successp = success;
michael@0: 	return (u_int16_t)(result);
michael@0: }
michael@0: #endif