mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-25 11:37:56 +00:00
333fc21e3c
I believe have made all of libc .c's as consistent as possible.
993 lines
25 KiB
C
993 lines
25 KiB
C
/*
|
|
* Copyright (c) 1985
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* Portions Copyright (c) 1993 by Digital Equipment Corporation.
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies, and that
|
|
* the name of Digital Equipment Corporation not be used in advertising or
|
|
* publicity pertaining to distribution of the document or software without
|
|
* specific, written prior permission.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
|
|
* WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
|
|
* CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
|
|
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
|
|
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
|
|
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
|
|
* SOFTWARE.
|
|
*/
|
|
|
|
/*
|
|
* Portions Copyright (c) 1995 by International Business Machines, Inc.
|
|
*
|
|
* International Business Machines, Inc. (hereinafter called IBM) grants
|
|
* permission under its copyrights to use, copy, modify, and distribute this
|
|
* Software with or without fee, provided that the above copyright notice and
|
|
* all paragraphs of this notice appear in all copies, and that the name of IBM
|
|
* not be used in connection with the marketing of any product incorporating
|
|
* the Software or modifications thereof, without specific, written prior
|
|
* permission.
|
|
*
|
|
* To the extent it has a right to do so, IBM grants an immunity from suit
|
|
* under its patents, if any, for the use, sale or manufacture of products to
|
|
* the extent that such products are used for performing Domain Name System
|
|
* dynamic updates in TCP/IP networks by means of the Software. No immunity is
|
|
* granted for any product per se or for any other function of any product.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES,
|
|
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
|
|
* PARTICULAR PURPOSE. IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL,
|
|
* DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING
|
|
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN
|
|
* IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES.
|
|
*/
|
|
|
|
/*
|
|
* Portions Copyright (c) 1996 by Internet Software Consortium.
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
|
|
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
|
|
* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
|
|
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
|
|
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
|
|
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
|
|
* SOFTWARE.
|
|
*/
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
static char sccsid[] = "@(#)res_debug.c 8.1 (Berkeley) 6/4/93";
|
|
#endif /* LIBC_SCCS and not lint */
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/socket.h>
|
|
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
#include <arpa/nameser.h>
|
|
|
|
#include <ctype.h>
|
|
#include <errno.h>
|
|
#include <math.h>
|
|
#include <netdb.h>
|
|
#include <resolv.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <time.h>
|
|
|
|
#define SPRINTF(x) sprintf x
|
|
|
|
extern const char *_res_opcodes[];
|
|
extern const char *_res_resultcodes[];
|
|
extern const char *_res_sectioncodes[];
|
|
|
|
/*
|
|
* Print the current options.
|
|
*/
|
|
void
|
|
fp_resstat(struct __res_state *statp, FILE *file) {
|
|
u_long mask;
|
|
|
|
fprintf(file, ";; res options:");
|
|
if (!statp)
|
|
statp = &_res;
|
|
for (mask = 1; mask != 0; mask <<= 1)
|
|
if (statp->options & mask)
|
|
fprintf(file, " %s", p_option(mask));
|
|
putc('\n', file);
|
|
}
|
|
|
|
static void
|
|
do_section(ns_msg *handle, ns_sect section, int pflag, FILE *file) {
|
|
int n, sflag, rrnum;
|
|
char buf[2048]; /* XXX need to malloc */
|
|
ns_opcode opcode;
|
|
ns_rr rr;
|
|
|
|
/*
|
|
* Print answer records.
|
|
*/
|
|
sflag = (_res.pfcode & pflag);
|
|
if (_res.pfcode && !sflag)
|
|
return;
|
|
|
|
opcode = ns_msg_getflag(*handle, ns_f_opcode);
|
|
rrnum = 0;
|
|
for (;;) {
|
|
if (ns_parserr(handle, section, rrnum, &rr)) {
|
|
if (errno != ENODEV)
|
|
fprintf(file, ";; ns_parserr: %s\n",
|
|
strerror(errno));
|
|
else if (rrnum > 0 && sflag != 0 &&
|
|
(_res.pfcode & RES_PRF_HEAD1))
|
|
putc('\n', file);
|
|
return;
|
|
}
|
|
if (rrnum == 0 && sflag != 0 && (_res.pfcode & RES_PRF_HEAD1))
|
|
fprintf(file, ";; %s SECTION:\n",
|
|
p_section(section, opcode));
|
|
if (section == ns_s_qd)
|
|
fprintf(file, ";;\t%s, type = %s, class = %s\n",
|
|
ns_rr_name(rr),
|
|
p_type(ns_rr_type(rr)),
|
|
p_class(ns_rr_class(rr)));
|
|
else {
|
|
n = ns_sprintrr(handle, &rr, NULL, NULL,
|
|
buf, sizeof buf);
|
|
if (n < 0) {
|
|
fprintf(file, ";; ns_sprintrr: %s\n",
|
|
strerror(errno));
|
|
return;
|
|
}
|
|
fputs(buf, file);
|
|
fputc('\n', file);
|
|
}
|
|
rrnum++;
|
|
}
|
|
}
|
|
|
|
void
|
|
p_query(const u_char *msg) {
|
|
fp_query(msg, stdout);
|
|
}
|
|
|
|
void
|
|
fp_query(const u_char *msg, FILE *file) {
|
|
fp_nquery(msg, PACKETSZ, file);
|
|
}
|
|
|
|
/*
|
|
* Print the contents of a query.
|
|
* This is intended to be primarily a debugging routine.
|
|
*/
|
|
void
|
|
fp_nquery(const u_char *msg, int len, FILE *file) {
|
|
ns_msg handle;
|
|
int n, qdcount, ancount, nscount, arcount;
|
|
u_int opcode, rcode, id;
|
|
|
|
if ((_res.options & RES_INIT) == 0 && res_init() == -1)
|
|
return;
|
|
|
|
if (ns_initparse(msg, len, &handle) < 0) {
|
|
fprintf(file, ";; ns_initparse: %s\n", strerror(errno));
|
|
return;
|
|
}
|
|
opcode = ns_msg_getflag(handle, ns_f_opcode);
|
|
rcode = ns_msg_getflag(handle, ns_f_rcode);
|
|
id = ns_msg_id(handle);
|
|
qdcount = ns_msg_count(handle, ns_s_qd);
|
|
ancount = ns_msg_count(handle, ns_s_an);
|
|
nscount = ns_msg_count(handle, ns_s_ns);
|
|
arcount = ns_msg_count(handle, ns_s_ar);
|
|
|
|
/*
|
|
* Print header fields.
|
|
*/
|
|
if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEADX) || rcode)
|
|
fprintf(file,
|
|
";; ->>HEADER<<- opcode: %s, status: %s, id: %d\n",
|
|
_res_opcodes[opcode], _res_resultcodes[rcode], id);
|
|
if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEADX))
|
|
putc(';', file);
|
|
if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEAD2)) {
|
|
fprintf(file, "; flags:");
|
|
if (ns_msg_getflag(handle, ns_f_qr))
|
|
fprintf(file, " qr");
|
|
if (ns_msg_getflag(handle, ns_f_aa))
|
|
fprintf(file, " aa");
|
|
if (ns_msg_getflag(handle, ns_f_tc))
|
|
fprintf(file, " tc");
|
|
if (ns_msg_getflag(handle, ns_f_rd))
|
|
fprintf(file, " rd");
|
|
if (ns_msg_getflag(handle, ns_f_ra))
|
|
fprintf(file, " ra");
|
|
if (ns_msg_getflag(handle, ns_f_z))
|
|
fprintf(file, " ??");
|
|
if (ns_msg_getflag(handle, ns_f_ad))
|
|
fprintf(file, " ad");
|
|
if (ns_msg_getflag(handle, ns_f_cd))
|
|
fprintf(file, " cd");
|
|
}
|
|
if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEAD1)) {
|
|
fprintf(file, "; %s: %d",
|
|
p_section(ns_s_qd, opcode), qdcount);
|
|
fprintf(file, ", %s: %d",
|
|
p_section(ns_s_an, opcode), ancount);
|
|
fprintf(file, ", %s: %d",
|
|
p_section(ns_s_ns, opcode), nscount);
|
|
fprintf(file, ", %s: %d",
|
|
p_section(ns_s_ar, opcode), arcount);
|
|
}
|
|
if ((!_res.pfcode) || (_res.pfcode &
|
|
(RES_PRF_HEADX | RES_PRF_HEAD2 | RES_PRF_HEAD1))) {
|
|
putc('\n',file);
|
|
}
|
|
/*
|
|
* Print the various sections.
|
|
*/
|
|
do_section(&handle, ns_s_qd, RES_PRF_QUES, file);
|
|
do_section(&handle, ns_s_an, RES_PRF_ANS, file);
|
|
do_section(&handle, ns_s_ns, RES_PRF_AUTH, file);
|
|
do_section(&handle, ns_s_ar, RES_PRF_ADD, file);
|
|
if (qdcount == 0 && ancount == 0 &&
|
|
nscount == 0 && arcount == 0)
|
|
putc('\n', file);
|
|
}
|
|
|
|
const u_char *
|
|
p_cdnname(const u_char *cp, const u_char *msg, int len, FILE *file) {
|
|
char name[MAXDNAME];
|
|
int n;
|
|
|
|
if ((n = dn_expand(msg, msg + len, cp, name, sizeof name)) < 0)
|
|
return (NULL);
|
|
if (name[0] == '\0')
|
|
putc('.', file);
|
|
else
|
|
fputs(name, file);
|
|
return (cp + n);
|
|
}
|
|
|
|
const u_char *
|
|
p_cdname(const u_char *cp, const u_char *msg, FILE *file) {
|
|
return (p_cdnname(cp, msg, PACKETSZ, file));
|
|
}
|
|
|
|
/* Return a fully-qualified domain name from a compressed name (with
|
|
length supplied). */
|
|
|
|
const u_char *
|
|
p_fqnname(cp, msg, msglen, name, namelen)
|
|
const u_char *cp, *msg;
|
|
int msglen;
|
|
char *name;
|
|
int namelen;
|
|
{
|
|
int n, newlen;
|
|
|
|
if ((n = dn_expand(msg, cp + msglen, cp, name, namelen)) < 0)
|
|
return (NULL);
|
|
newlen = strlen(name);
|
|
if (newlen == 0 || name[newlen - 1] != '.') {
|
|
if (newlen + 1 >= namelen) /* Lack space for final dot */
|
|
return (NULL);
|
|
else
|
|
strcpy(name + newlen, ".");
|
|
}
|
|
return (cp + n);
|
|
}
|
|
|
|
/* XXX: the rest of these functions need to become length-limited, too. */
|
|
|
|
const u_char *
|
|
p_fqname(const u_char *cp, const u_char *msg, FILE *file) {
|
|
char name[MAXDNAME];
|
|
const u_char *n;
|
|
|
|
n = p_fqnname(cp, msg, MAXCDNAME, name, sizeof name);
|
|
if (n == NULL)
|
|
return (NULL);
|
|
fputs(name, file);
|
|
return (n);
|
|
}
|
|
|
|
/*
|
|
* Names of RR classes and qclasses. Classes and qclasses are the same, except
|
|
* that C_ANY is a qclass but not a class. (You can ask for records of class
|
|
* C_ANY, but you can't have any records of that class in the database.)
|
|
*/
|
|
const struct res_sym __p_class_syms[] = {
|
|
{C_IN, "IN"},
|
|
{C_CHAOS, "CHAOS"},
|
|
{C_HS, "HS"},
|
|
{C_HS, "HESIOD"},
|
|
{C_ANY, "ANY"},
|
|
{C_NONE, "NONE"},
|
|
{C_IN, (char *)0}
|
|
};
|
|
|
|
/*
|
|
* Names of message sections.
|
|
*/
|
|
const struct res_sym __p_default_section_syms[] = {
|
|
{ns_s_qd, "QUERY"},
|
|
{ns_s_an, "ANSWER"},
|
|
{ns_s_ns, "AUTHORITY"},
|
|
{ns_s_ar, "ADDITIONAL"},
|
|
{0, (char *)0}
|
|
};
|
|
|
|
const struct res_sym __p_update_section_syms[] = {
|
|
{S_ZONE, "ZONE"},
|
|
{S_PREREQ, "PREREQUISITE"},
|
|
{S_UPDATE, "UPDATE"},
|
|
{S_ADDT, "ADDITIONAL"},
|
|
{0, (char *)0}
|
|
};
|
|
|
|
/*
|
|
* Names of RR types and qtypes. Types and qtypes are the same, except
|
|
* that T_ANY is a qtype but not a type. (You can ask for records of type
|
|
* T_ANY, but you can't have any records of that type in the database.)
|
|
*/
|
|
const struct res_sym __p_type_syms[] = {
|
|
{T_A, "A", "address"},
|
|
{T_NS, "NS", "name server"},
|
|
{T_MD, "MD", "mail destination (deprecated)"},
|
|
{T_MF, "MF", "mail forwarder (deprecated)"},
|
|
{T_CNAME, "CNAME", "canonical name"},
|
|
{T_SOA, "SOA", "start of authority"},
|
|
{T_MB, "MB", "mailbox"},
|
|
{T_MG, "MG", "mail group member"},
|
|
{T_MR, "MR", "mail rename"},
|
|
{T_NULL, "NULL", "null"},
|
|
{T_WKS, "WKS", "well-known service (deprecated)"},
|
|
{T_PTR, "PTR", "domain name pointer"},
|
|
{T_HINFO, "HINFO", "host information"},
|
|
{T_MINFO, "MINFO", "mailbox information"},
|
|
{T_MX, "MX", "mail exchanger"},
|
|
{T_TXT, "TXT", "text"},
|
|
{T_RP, "RP", "responsible person"},
|
|
{T_AFSDB, "AFSDB", "DCE or AFS server"},
|
|
{T_X25, "X25", "X25 address"},
|
|
{T_ISDN, "ISDN", "ISDN address"},
|
|
{T_RT, "RT", "router"},
|
|
{T_NSAP, "NSAP", "nsap address"},
|
|
{T_NSAP_PTR, "NSAP_PTR", "domain name pointer"},
|
|
{T_SIG, "SIG", "signature"},
|
|
{T_KEY, "KEY", "key"},
|
|
{T_PX, "PX", "mapping information"},
|
|
{T_GPOS, "GPOS", "geographical position (withdrawn)"},
|
|
{T_AAAA, "AAAA", "IPv6 address"},
|
|
{T_LOC, "LOC", "location"},
|
|
{T_NXT, "NXT", "next valid name (unimplemented)"},
|
|
{T_EID, "EID", "endpoint identifier (unimplemented)"},
|
|
{T_NIMLOC, "NIMLOC", "NIMROD locator (unimplemented)"},
|
|
{T_SRV, "SRV", "server selection"},
|
|
{T_ATMA, "ATMA", "ATM address (unimplemented)"},
|
|
{T_IXFR, "IXFR", "incremental zone transfer"},
|
|
{T_AXFR, "AXFR", "zone transfer"},
|
|
{T_MAILB, "MAILB", "mailbox-related data (deprecated)"},
|
|
{T_MAILA, "MAILA", "mail agent (deprecated)"},
|
|
{T_NAPTR, "NAPTR", "URN Naming Authority"},
|
|
{T_ANY, "ANY", "\"any\""},
|
|
{0, NULL, NULL}
|
|
};
|
|
|
|
int
|
|
sym_ston(const struct res_sym *syms, const char *name, int *success) {
|
|
for ((void)NULL; syms->name != 0; syms++) {
|
|
if (strcasecmp (name, syms->name) == 0) {
|
|
if (success)
|
|
*success = 1;
|
|
return (syms->number);
|
|
}
|
|
}
|
|
if (success)
|
|
*success = 0;
|
|
return (syms->number); /* The default value. */
|
|
}
|
|
|
|
const char *
|
|
sym_ntos(const struct res_sym *syms, int number, int *success) {
|
|
static char unname[20];
|
|
|
|
for ((void)NULL; syms->name != 0; syms++) {
|
|
if (number == syms->number) {
|
|
if (success)
|
|
*success = 1;
|
|
return (syms->name);
|
|
}
|
|
}
|
|
|
|
sprintf(unname, "%d", number);
|
|
if (success)
|
|
*success = 0;
|
|
return (unname);
|
|
}
|
|
|
|
const char *
|
|
sym_ntop(const struct res_sym *syms, int number, int *success) {
|
|
static char unname[20];
|
|
|
|
for ((void)NULL; syms->name != 0; syms++) {
|
|
if (number == syms->number) {
|
|
if (success)
|
|
*success = 1;
|
|
return (syms->humanname);
|
|
}
|
|
}
|
|
sprintf(unname, "%d", number);
|
|
if (success)
|
|
*success = 0;
|
|
return (unname);
|
|
}
|
|
|
|
/*
|
|
* Return a string for the type.
|
|
*/
|
|
const char *
|
|
p_type(int type) {
|
|
return (sym_ntos(__p_type_syms, type, (int *)0));
|
|
}
|
|
|
|
/*
|
|
* Return a string for the type.
|
|
*/
|
|
const char *
|
|
p_section(int section, int opcode) {
|
|
const struct res_sym *symbols;
|
|
|
|
switch (opcode) {
|
|
case ns_o_update:
|
|
symbols = __p_update_section_syms;
|
|
break;
|
|
default:
|
|
symbols = __p_default_section_syms;
|
|
break;
|
|
}
|
|
return (sym_ntos(symbols, section, (int *)0));
|
|
}
|
|
|
|
/*
|
|
* Return a mnemonic for class.
|
|
*/
|
|
const char *
|
|
p_class(int class) {
|
|
return (sym_ntos(__p_class_syms, class, (int *)0));
|
|
}
|
|
|
|
/*
|
|
* Return a mnemonic for an option
|
|
*/
|
|
const char *
|
|
p_option(u_long option) {
|
|
static char nbuf[40];
|
|
|
|
switch (option) {
|
|
case RES_INIT: return "init";
|
|
case RES_DEBUG: return "debug";
|
|
case RES_AAONLY: return "aaonly(unimpl)";
|
|
case RES_USEVC: return "usevc";
|
|
case RES_PRIMARY: return "primry(unimpl)";
|
|
case RES_IGNTC: return "igntc";
|
|
case RES_RECURSE: return "recurs";
|
|
case RES_DEFNAMES: return "defnam";
|
|
case RES_STAYOPEN: return "styopn";
|
|
case RES_DNSRCH: return "dnsrch";
|
|
case RES_INSECURE1: return "insecure1";
|
|
case RES_INSECURE2: return "insecure2";
|
|
case RES_NOALIASES: return "noaliases";
|
|
case RES_USE_INET6: return "inet6";
|
|
case RES_NOTLDQUERY: return "no-tld-query";
|
|
case RES_USE_EDNS0: return "edns0";
|
|
default: sprintf(nbuf, "?0x%lx?", (u_long)option);
|
|
return (nbuf);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Return a mnemonic for a time to live.
|
|
*/
|
|
const char *
|
|
p_time(u_int32_t value) {
|
|
static char nbuf[40];
|
|
|
|
if (ns_format_ttl(value, nbuf, sizeof nbuf) < 0)
|
|
sprintf(nbuf, "%u", value);
|
|
return (nbuf);
|
|
}
|
|
|
|
|
|
/*
|
|
* routines to convert between on-the-wire RR format and zone file format.
|
|
* Does not contain conversion to/from decimal degrees; divide or multiply
|
|
* by 60*60*1000 for that.
|
|
*/
|
|
|
|
static unsigned int poweroften[10] = {1, 10, 100, 1000, 10000, 100000,
|
|
1000000,10000000,100000000,1000000000};
|
|
|
|
/* takes an XeY precision/size value, returns a string representation. */
|
|
static const char *
|
|
precsize_ntoa(prec)
|
|
u_int8_t prec;
|
|
{
|
|
static char retbuf[sizeof "90000000.00"];
|
|
unsigned long val;
|
|
int mantissa, exponent;
|
|
|
|
mantissa = (int)((prec >> 4) & 0x0f) % 10;
|
|
exponent = (int)((prec >> 0) & 0x0f) % 10;
|
|
|
|
val = mantissa * poweroften[exponent];
|
|
|
|
(void) sprintf(retbuf, "%ld.%.2ld", val/100, val%100);
|
|
return (retbuf);
|
|
}
|
|
|
|
/* converts ascii size/precision X * 10**Y(cm) to 0xXY. moves pointer. */
|
|
static u_int8_t
|
|
precsize_aton(strptr)
|
|
char **strptr;
|
|
{
|
|
unsigned int mval = 0, cmval = 0;
|
|
u_int8_t retval = 0;
|
|
char *cp;
|
|
int exponent;
|
|
int mantissa;
|
|
|
|
cp = *strptr;
|
|
|
|
while (isdigit((unsigned char)*cp))
|
|
mval = mval * 10 + (*cp++ - '0');
|
|
|
|
if (*cp == '.') { /* centimeters */
|
|
cp++;
|
|
if (isdigit((unsigned char)*cp)) {
|
|
cmval = (*cp++ - '0') * 10;
|
|
if (isdigit((unsigned char)*cp)) {
|
|
cmval += (*cp++ - '0');
|
|
}
|
|
}
|
|
}
|
|
cmval = (mval * 100) + cmval;
|
|
|
|
for (exponent = 0; exponent < 9; exponent++)
|
|
if (cmval < poweroften[exponent+1])
|
|
break;
|
|
|
|
mantissa = cmval / poweroften[exponent];
|
|
if (mantissa > 9)
|
|
mantissa = 9;
|
|
|
|
retval = (mantissa << 4) | exponent;
|
|
|
|
*strptr = cp;
|
|
|
|
return (retval);
|
|
}
|
|
|
|
/* converts ascii lat/lon to unsigned encoded 32-bit number. moves pointer. */
|
|
static u_int32_t
|
|
latlon2ul(latlonstrptr,which)
|
|
char **latlonstrptr;
|
|
int *which;
|
|
{
|
|
char *cp;
|
|
u_int32_t retval;
|
|
int deg = 0, min = 0, secs = 0, secsfrac = 0;
|
|
|
|
cp = *latlonstrptr;
|
|
|
|
while (isdigit((unsigned char)*cp))
|
|
deg = deg * 10 + (*cp++ - '0');
|
|
|
|
while (isspace((unsigned char)*cp))
|
|
cp++;
|
|
|
|
if (!(isdigit((unsigned char)*cp)))
|
|
goto fndhemi;
|
|
|
|
while (isdigit((unsigned char)*cp))
|
|
min = min * 10 + (*cp++ - '0');
|
|
|
|
while (isspace((unsigned char)*cp))
|
|
cp++;
|
|
|
|
if (!(isdigit((unsigned char)*cp)))
|
|
goto fndhemi;
|
|
|
|
while (isdigit((unsigned char)*cp))
|
|
secs = secs * 10 + (*cp++ - '0');
|
|
|
|
if (*cp == '.') { /* decimal seconds */
|
|
cp++;
|
|
if (isdigit((unsigned char)*cp)) {
|
|
secsfrac = (*cp++ - '0') * 100;
|
|
if (isdigit((unsigned char)*cp)) {
|
|
secsfrac += (*cp++ - '0') * 10;
|
|
if (isdigit((unsigned char)*cp)) {
|
|
secsfrac += (*cp++ - '0');
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
while (!isspace((unsigned char)*cp)) /* if any trailing garbage */
|
|
cp++;
|
|
|
|
while (isspace((unsigned char)*cp))
|
|
cp++;
|
|
|
|
fndhemi:
|
|
switch (*cp) {
|
|
case 'N': case 'n':
|
|
case 'E': case 'e':
|
|
retval = ((unsigned)1<<31)
|
|
+ (((((deg * 60) + min) * 60) + secs) * 1000)
|
|
+ secsfrac;
|
|
break;
|
|
case 'S': case 's':
|
|
case 'W': case 'w':
|
|
retval = ((unsigned)1<<31)
|
|
- (((((deg * 60) + min) * 60) + secs) * 1000)
|
|
- secsfrac;
|
|
break;
|
|
default:
|
|
retval = 0; /* invalid value -- indicates error */
|
|
break;
|
|
}
|
|
|
|
switch (*cp) {
|
|
case 'N': case 'n':
|
|
case 'S': case 's':
|
|
*which = 1; /* latitude */
|
|
break;
|
|
case 'E': case 'e':
|
|
case 'W': case 'w':
|
|
*which = 2; /* longitude */
|
|
break;
|
|
default:
|
|
*which = 0; /* error */
|
|
break;
|
|
}
|
|
|
|
cp++; /* skip the hemisphere */
|
|
|
|
while (!isspace((unsigned char)*cp)) /* if any trailing garbage */
|
|
cp++;
|
|
|
|
while (isspace((unsigned char)*cp)) /* move to next field */
|
|
cp++;
|
|
|
|
*latlonstrptr = cp;
|
|
|
|
return (retval);
|
|
}
|
|
|
|
/* converts a zone file representation in a string to an RDATA on-the-wire
|
|
* representation. */
|
|
int
|
|
loc_aton(ascii, binary)
|
|
const char *ascii;
|
|
u_char *binary;
|
|
{
|
|
const char *cp, *maxcp;
|
|
u_char *bcp;
|
|
|
|
u_int32_t latit = 0, longit = 0, alt = 0;
|
|
u_int32_t lltemp1 = 0, lltemp2 = 0;
|
|
int altmeters = 0, altfrac = 0, altsign = 1;
|
|
u_int8_t hp = 0x16; /* default = 1e6 cm = 10000.00m = 10km */
|
|
u_int8_t vp = 0x13; /* default = 1e3 cm = 10.00m */
|
|
u_int8_t siz = 0x12; /* default = 1e2 cm = 1.00m */
|
|
int which1 = 0, which2 = 0;
|
|
|
|
cp = ascii;
|
|
maxcp = cp + strlen(ascii);
|
|
|
|
lltemp1 = latlon2ul(&cp, &which1);
|
|
|
|
lltemp2 = latlon2ul(&cp, &which2);
|
|
|
|
switch (which1 + which2) {
|
|
case 3: /* 1 + 2, the only valid combination */
|
|
if ((which1 == 1) && (which2 == 2)) { /* normal case */
|
|
latit = lltemp1;
|
|
longit = lltemp2;
|
|
} else if ((which1 == 2) && (which2 == 1)) { /* reversed */
|
|
longit = lltemp1;
|
|
latit = lltemp2;
|
|
} else { /* some kind of brokenness */
|
|
return (0);
|
|
}
|
|
break;
|
|
default: /* we didn't get one of each */
|
|
return (0);
|
|
}
|
|
|
|
/* altitude */
|
|
if (*cp == '-') {
|
|
altsign = -1;
|
|
cp++;
|
|
}
|
|
|
|
if (*cp == '+')
|
|
cp++;
|
|
|
|
while (isdigit((unsigned char)*cp))
|
|
altmeters = altmeters * 10 + (*cp++ - '0');
|
|
|
|
if (*cp == '.') { /* decimal meters */
|
|
cp++;
|
|
if (isdigit((unsigned char)*cp)) {
|
|
altfrac = (*cp++ - '0') * 10;
|
|
if (isdigit((unsigned char)*cp)) {
|
|
altfrac += (*cp++ - '0');
|
|
}
|
|
}
|
|
}
|
|
|
|
alt = (10000000 + (altsign * (altmeters * 100 + altfrac)));
|
|
|
|
while (!isspace((unsigned char)*cp) && (cp < maxcp)) /* if trailing garbage or m */
|
|
cp++;
|
|
|
|
while (isspace((unsigned char)*cp) && (cp < maxcp))
|
|
cp++;
|
|
|
|
if (cp >= maxcp)
|
|
goto defaults;
|
|
|
|
siz = precsize_aton(&cp);
|
|
|
|
while (!isspace((unsigned char)*cp) && (cp < maxcp)) /* if trailing garbage or m */
|
|
cp++;
|
|
|
|
while (isspace((unsigned char)*cp) && (cp < maxcp))
|
|
cp++;
|
|
|
|
if (cp >= maxcp)
|
|
goto defaults;
|
|
|
|
hp = precsize_aton(&cp);
|
|
|
|
while (!isspace((unsigned char)*cp) && (cp < maxcp)) /* if trailing garbage or m */
|
|
cp++;
|
|
|
|
while (isspace((unsigned char)*cp) && (cp < maxcp))
|
|
cp++;
|
|
|
|
if (cp >= maxcp)
|
|
goto defaults;
|
|
|
|
vp = precsize_aton(&cp);
|
|
|
|
defaults:
|
|
|
|
bcp = binary;
|
|
*bcp++ = (u_int8_t) 0; /* version byte */
|
|
*bcp++ = siz;
|
|
*bcp++ = hp;
|
|
*bcp++ = vp;
|
|
PUTLONG(latit,bcp);
|
|
PUTLONG(longit,bcp);
|
|
PUTLONG(alt,bcp);
|
|
|
|
return (16); /* size of RR in octets */
|
|
}
|
|
|
|
/* takes an on-the-wire LOC RR and formats it in a human readable format. */
|
|
const char *
|
|
loc_ntoa(binary, ascii)
|
|
const u_char *binary;
|
|
char *ascii;
|
|
{
|
|
static char *error = "?";
|
|
const u_char *cp = binary;
|
|
|
|
int latdeg, latmin, latsec, latsecfrac;
|
|
int longdeg, longmin, longsec, longsecfrac;
|
|
char northsouth, eastwest;
|
|
int altmeters, altfrac, altsign;
|
|
|
|
const u_int32_t referencealt = 100000 * 100;
|
|
|
|
int32_t latval, longval, altval;
|
|
u_int32_t templ;
|
|
u_int8_t sizeval, hpval, vpval, versionval;
|
|
|
|
char *sizestr, *hpstr, *vpstr;
|
|
|
|
versionval = *cp++;
|
|
|
|
if (versionval) {
|
|
(void) sprintf(ascii, "; error: unknown LOC RR version");
|
|
return (ascii);
|
|
}
|
|
|
|
sizeval = *cp++;
|
|
|
|
hpval = *cp++;
|
|
vpval = *cp++;
|
|
|
|
GETLONG(templ, cp);
|
|
latval = (templ - ((unsigned)1<<31));
|
|
|
|
GETLONG(templ, cp);
|
|
longval = (templ - ((unsigned)1<<31));
|
|
|
|
GETLONG(templ, cp);
|
|
if (templ < referencealt) { /* below WGS 84 spheroid */
|
|
altval = referencealt - templ;
|
|
altsign = -1;
|
|
} else {
|
|
altval = templ - referencealt;
|
|
altsign = 1;
|
|
}
|
|
|
|
if (latval < 0) {
|
|
northsouth = 'S';
|
|
latval = -latval;
|
|
} else
|
|
northsouth = 'N';
|
|
|
|
latsecfrac = latval % 1000;
|
|
latval = latval / 1000;
|
|
latsec = latval % 60;
|
|
latval = latval / 60;
|
|
latmin = latval % 60;
|
|
latval = latval / 60;
|
|
latdeg = latval;
|
|
|
|
if (longval < 0) {
|
|
eastwest = 'W';
|
|
longval = -longval;
|
|
} else
|
|
eastwest = 'E';
|
|
|
|
longsecfrac = longval % 1000;
|
|
longval = longval / 1000;
|
|
longsec = longval % 60;
|
|
longval = longval / 60;
|
|
longmin = longval % 60;
|
|
longval = longval / 60;
|
|
longdeg = longval;
|
|
|
|
altfrac = altval % 100;
|
|
altmeters = (altval / 100) * altsign;
|
|
|
|
if ((sizestr = strdup(precsize_ntoa(sizeval))) == NULL)
|
|
sizestr = error;
|
|
if ((hpstr = strdup(precsize_ntoa(hpval))) == NULL)
|
|
hpstr = error;
|
|
if ((vpstr = strdup(precsize_ntoa(vpval))) == NULL)
|
|
vpstr = error;
|
|
|
|
sprintf(ascii,
|
|
"%d %.2d %.2d.%.3d %c %d %.2d %.2d.%.3d %c %d.%.2dm %sm %sm %sm",
|
|
latdeg, latmin, latsec, latsecfrac, northsouth,
|
|
longdeg, longmin, longsec, longsecfrac, eastwest,
|
|
altmeters, altfrac, sizestr, hpstr, vpstr);
|
|
|
|
if (sizestr != error)
|
|
free(sizestr);
|
|
if (hpstr != error)
|
|
free(hpstr);
|
|
if (vpstr != error)
|
|
free(vpstr);
|
|
|
|
return (ascii);
|
|
}
|
|
|
|
|
|
/* Return the number of DNS hierarchy levels in the name. */
|
|
int
|
|
dn_count_labels(const char *name) {
|
|
int i, len, count;
|
|
|
|
len = strlen(name);
|
|
for (i = 0, count = 0; i < len; i++) {
|
|
/* XXX need to check for \. or use named's nlabels(). */
|
|
if (name[i] == '.')
|
|
count++;
|
|
}
|
|
|
|
/* don't count initial wildcard */
|
|
if (name[0] == '*')
|
|
if (count)
|
|
count--;
|
|
|
|
/* don't count the null label for root. */
|
|
/* if terminating '.' not found, must adjust */
|
|
/* count to include last label */
|
|
if (len > 0 && name[len-1] != '.')
|
|
count++;
|
|
return (count);
|
|
}
|
|
|
|
|
|
/*
|
|
* Make dates expressed in seconds-since-Jan-1-1970 easy to read.
|
|
* SIG records are required to be printed like this, by the Secure DNS RFC.
|
|
*/
|
|
char *
|
|
p_secstodate (u_long secs) {
|
|
static char output[15]; /* YYYYMMDDHHMMSS and null */
|
|
time_t clock = secs;
|
|
struct tm *time;
|
|
|
|
time = gmtime(&clock);
|
|
time->tm_year += 1900;
|
|
time->tm_mon += 1;
|
|
sprintf(output, "%04d%02d%02d%02d%02d%02d",
|
|
time->tm_year, time->tm_mon, time->tm_mday,
|
|
time->tm_hour, time->tm_min, time->tm_sec);
|
|
return (output);
|
|
}
|
|
|
|
/*
|
|
* Weak aliases for applications that use certain private entry points,
|
|
* and fail to include <resolv.h>.
|
|
*/
|
|
#undef fp_resstat
|
|
__weak_reference(__fp_resstat, fp_resstat);
|
|
#undef p_query
|
|
__weak_reference(__p_query, p_query);
|
|
#undef p_fqnname
|
|
__weak_reference(__p_fqnname, p_fqnname);
|
|
#undef sym_ston
|
|
__weak_reference(__sym_ston, sym_ston);
|
|
#undef sym_ntos
|
|
__weak_reference(__sym_ntos, sym_ntos);
|
|
#undef sym_ntop
|
|
__weak_reference(__sym_ntop, sym_ntop);
|
|
#undef dn_count_labels
|
|
__weak_reference(__dn_count_labels, dn_count_labels);
|
|
#undef p_secstodate
|
|
__weak_reference(__p_secstodate, p_secstodate);
|