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NetBSD/lib/libc/net/res_debug.c

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/* $NetBSD: res_debug.c,v 1.20 1998/09/13 16:05:34 kleink Exp $ */
/*-
* Copyright (c) 1985, 1990, 1993
* 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.
* --Copyright--
*/
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
#if 0
static char sccsid[] = "@(#)res_debug.c 8.1 (Berkeley) 6/4/93";
static char rcsid[] = "Id: res_debug.c,v 8.20 1997/06/01 20:34:37 vixie Exp ";
#else
__RCSID("$NetBSD: res_debug.c,v 1.20 1998/09/13 16:05:34 kleink Exp $");
#endif
#endif /* LIBC_SCCS and not lint */
#include "namespace.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 <netdb.h>
#include <resolv.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
extern const char *const _res_opcodes[];
extern const char *const _res_resultcodes[];
static char *dewks __P((int));
static const char *deproto __P((int));
static const u_char *do_rrset __P((const u_char *, int, const u_char *,
int, int, FILE *, const char *));
static const char *precsize_ntoa __P((u_int8_t));
static u_int8_t precsize_aton __P((const char **));
static u_int32_t latlon2ul __P((const char **, int *));
void __p_query __P((const u_char *));
void __fp_resstat __P((struct __res_state *, FILE *));
void __fp_nquery __P((const u_char *, int, FILE *));
void __fp_query __P((const u_char *, FILE *));
const u_char *__p_cdnname __P((const u_char *, const u_char *, int, FILE *));
const u_char *__p_cdname __P((const u_char *, const u_char *, FILE *));
const u_char *__p_fqnname __P((const u_char *, const u_char *, int, char *,
int));
const u_char *__p_fqname __P((const u_char *, const u_char *, FILE *));
const u_char *__p_rr __P((const u_char *, const u_char *, FILE *));
int __sym_ston __P((const struct res_sym *, char *, int *));
const char *__sym_ntos __P((const struct res_sym *, int, int *));
const char *__sym_ntop __P((const struct res_sym *, int, int *));
const char *__p_type __P((int));
const char *__p_class __P((int));
const char *__p_option __P((u_long));
const char *__p_time __P((u_int32_t));
int loc_aton __P((const char *, u_char *));
const char *loc_ntoa __P((const u_char *, char *));
int __dn_count_labels __P((char *));
char *__p_secstodate __P((unsigned long));
static char *
dewks(wks)
int wks;
{
static char nbuf[20];
switch (wks) {
case 5: return "rje";
case 7: return "echo";
case 9: return "discard";
case 11: return "systat";
case 13: return "daytime";
case 15: return "netstat";
case 17: return "qotd";
case 19: return "chargen";
case 20: return "ftp-data";
case 21: return "ftp";
case 23: return "telnet";
case 25: return "smtp";
case 37: return "time";
case 39: return "rlp";
case 42: return "name";
case 43: return "whois";
case 53: return "domain";
case 57: return "apts";
case 59: return "apfs";
case 67: return "bootps";
case 68: return "bootpc";
case 69: return "tftp";
case 77: return "rje";
case 79: return "finger";
case 87: return "link";
case 95: return "supdup";
case 100: return "newacct";
case 101: return "hostnames";
case 102: return "iso-tsap";
case 103: return "x400";
case 104: return "x400-snd";
case 105: return "csnet-ns";
case 109: return "pop-2";
case 111: return "sunrpc";
case 113: return "auth";
case 115: return "sftp";
case 117: return "uucp-path";
case 119: return "nntp";
case 121: return "erpc";
case 123: return "ntp";
case 133: return "statsrv";
case 136: return "profile";
case 144: return "NeWS";
case 161: return "snmp";
case 162: return "snmp-trap";
case 170: return "print-srv";
default:
(void)snprintf(nbuf, sizeof nbuf, "%d", wks);
return (nbuf);
}
}
/* XXX: we should use getprotobynumber() instead. */
static const char *
deproto(protonum)
int protonum;
{
static char nbuf[20];
switch (protonum) {
case 1: return "icmp";
case 2: return "igmp";
case 3: return "ggp";
case 5: return "st";
case 6: return "tcp";
case 7: return "ucl";
case 8: return "egp";
case 9: return "igp";
case 11: return "nvp-II";
case 12: return "pup";
case 16: return "chaos";
case 17: return "udp";
default:
(void)snprintf(nbuf, sizeof nbuf, "%d", protonum);
return (nbuf);
}
}
static const u_char *
do_rrset(msg, len, cp, cnt, pflag, file, hs)
int cnt, pflag, len;
const u_char *cp, *msg;
const char *hs;
FILE *file;
{
int n;
int sflag;
/*
* Print answer records.
*/
sflag = (_res.pfcode & pflag);
if ((n = ntohs(cnt)) != 0) {
if ((!_res.pfcode) || ((sflag) && (_res.pfcode & RES_PRF_HEAD1)))
fprintf(file, hs);
while (--n >= 0) {
if ((!_res.pfcode) || sflag) {
cp = p_rr(cp, msg, file);
} else {
unsigned int dlen;
cp += __dn_skipname(cp, cp + MAXCDNAME);
cp += sizeof(u_int16_t);
cp += sizeof(u_int16_t);
cp += sizeof(u_int32_t);
dlen = _getshort((u_char*)cp);
cp += sizeof(u_int16_t);
cp += dlen;
}
if ((cp - msg) > len)
return (NULL);
}
if ((!_res.pfcode) || ((sflag) && (_res.pfcode & RES_PRF_HEAD1)))
putc('\n', file);
}
return(cp);
}
void
__p_query(msg)
const u_char *msg;
{
__fp_query(msg, stdout);
}
/*
* Print the current options.
* This is intended to be primarily a debugging routine.
*/
void
__fp_resstat(statp, file)
struct __res_state *statp;
FILE *file;
{
register 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);
}
/*
* Print the contents of a query.
* This is intended to be primarily a debugging routine.
*/
void
__fp_nquery(msg, len, file)
const u_char *msg;
int len;
FILE *file;
{
register const u_char *cp, *endMark;
register const HEADER *hp;
register int n;
if ((_res.options & RES_INIT) == 0 && res_init() == -1)
return;
#define TruncTest(x) if (x > endMark) goto trunc
#define ErrorTest(x) if (x == NULL) goto error
/*
* Print header fields.
*/
hp = (HEADER *)msg;
cp = msg + HFIXEDSZ;
endMark = msg + len;
if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEADX) || hp->rcode) {
fprintf(file,";; ->>HEADER<<- opcode: %s, status: %s, id: %d",
_res_opcodes[hp->opcode],
_res_resultcodes[hp->rcode],
ntohs(hp->id));
putc('\n', file);
}
if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEADX))
putc(';', file);
if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEAD2)) {
fprintf(file,"; flags:");
if (hp->qr)
fprintf(file," qr");
if (hp->aa)
fprintf(file," aa");
if (hp->tc)
fprintf(file," tc");
if (hp->rd)
fprintf(file," rd");
if (hp->ra)
fprintf(file," ra");
if (hp->unused)
fprintf(file, " UNUSED-BIT-ON");
if (hp->ad)
fprintf(file, " ad");
if (hp->cd)
fprintf(file, " cd");
}
if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEAD1)) {
fprintf(file,"; Ques: %d", ntohs(hp->qdcount));
fprintf(file,", Ans: %d", ntohs(hp->ancount));
fprintf(file,", Auth: %d", ntohs(hp->nscount));
fprintf(file, ", Addit: %d", ntohs(hp->arcount));
}
if ((!_res.pfcode) || (_res.pfcode &
(RES_PRF_HEADX | RES_PRF_HEAD2 | RES_PRF_HEAD1))) {
putc('\n',file);
}
/*
* Print question records.
*/
if ((n = ntohs(hp->qdcount)) != 0) {
if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
fprintf(file,";; QUESTIONS:\n");
while (--n >= 0) {
if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
fprintf(file,";;\t");
TruncTest(cp);
if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
cp = p_cdnname(cp, msg, len, file);
else {
int n;
char name[MAXDNAME];
if ((n = dn_expand(msg, msg+len, cp, name,
sizeof name)) < 0)
cp = NULL;
else
cp += n;
}
ErrorTest(cp);
TruncTest(cp);
if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
fprintf(file, ", type = %s",
__p_type(_getshort((u_char*)cp)));
cp += INT16SZ;
TruncTest(cp);
if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
fprintf(file, ", class = %s\n",
__p_class(_getshort((u_char*)cp)));
cp += INT16SZ;
if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
putc('\n', file);
}
}
/*
* Print authoritative answer records
*/
TruncTest(cp);
cp = do_rrset(msg, len, cp, hp->ancount, RES_PRF_ANS, file,
";; ANSWERS:\n");
ErrorTest(cp);
/*
* print name server records
*/
TruncTest(cp);
cp = do_rrset(msg, len, cp, hp->nscount, RES_PRF_AUTH, file,
";; AUTHORITY RECORDS:\n");
ErrorTest(cp);
TruncTest(cp);
/*
* print additional records
*/
cp = do_rrset(msg, len, cp, hp->arcount, RES_PRF_ADD, file,
";; ADDITIONAL RECORDS:\n");
ErrorTest(cp);
return;
trunc:
fprintf(file, "\n;; ...truncated\n");
return;
error:
fprintf(file, "\n;; ...malformed\n");
}
void
__fp_query(msg, file)
const u_char *msg;
FILE *file;
{
fp_nquery(msg, PACKETSZ, file);
}
const u_char *
__p_cdnname(cp, msg, len, file)
const u_char *cp, *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(cp, msg, file)
const u_char *cp, *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. (vix)
*/
const u_char *
__p_fqname(cp, msg, file)
const u_char *cp, *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);
}
/*
* Print resource record fields in human readable form.
*/
const u_char *
__p_rr(cp, msg, file)
const u_char *cp, *msg;
FILE *file;
{
int type, class, dlen, n, c;
struct in_addr inaddr;
const u_char *cp1, *cp2;
u_int32_t tmpttl, t;
int lcnt;
u_int16_t keyflags;
char rrname[MAXDNAME]; /* The fqdn of this RR */
char base64_key[MAX_KEY_BASE64];
if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
h_errno = NETDB_INTERNAL;
return (NULL);
}
cp = __p_fqnname(cp, msg, MAXCDNAME, rrname, sizeof rrname);
if (!cp)
return (NULL); /* compression error */
fputs(rrname, file);
type = _getshort(cp);
cp += sizeof(u_int16_t);
class = _getshort(cp);
cp += sizeof(u_int16_t);
tmpttl = _getlong(cp);
cp += sizeof(u_int32_t);
dlen = _getshort(cp);
cp += sizeof(u_int16_t);
cp1 = cp;
if ((!_res.pfcode) || (_res.pfcode & RES_PRF_TTLID))
fprintf(file, "\t%lu", (u_long)tmpttl);
if ((!_res.pfcode) || (_res.pfcode & RES_PRF_CLASS))
fprintf(file, "\t%s", __p_class(class));
fprintf(file, "\t%s", __p_type(type));
/*
* Print type specific data, if appropriate
*/
switch (type) {
case T_A:
switch (class) {
case C_IN:
case C_HS:
bcopy(cp, (char *)&inaddr, sizeof(inaddr));
if (dlen == 4) {
fprintf(file,"\t%s", inet_ntoa(inaddr));
cp += dlen;
} else if (dlen == 7) {
char *address;
u_char protocol;
u_short port;
address = inet_ntoa(inaddr);
cp += sizeof(inaddr);
protocol = *cp;
cp += sizeof(u_char);
port = _getshort(cp);
cp += sizeof(u_int16_t);
fprintf(file, "\t%s\t; proto %d, port %d",
address, protocol, port);
}
break;
default:
cp += dlen;
}
break;
case T_CNAME:
case T_MB:
case T_MG:
case T_MR:
case T_NS:
case T_PTR:
putc('\t', file);
if ((cp = p_fqname(cp, msg, file)) == NULL)
return (NULL);
break;
case T_HINFO:
case T_ISDN:
cp2 = cp + dlen;
(void) fputs("\t\"", file);
if ((n = (unsigned char) *cp++) != 0) {
for (c = n; c > 0 && cp < cp2; c--) {
if (strchr("\n\"\\", *cp))
(void) putc('\\', file);
(void) putc(*cp++, file);
}
}
putc('"', file);
if (cp < cp2 && (n = (unsigned char) *cp++) != 0) {
(void) fputs ("\t\"", file);
for (c = n; c > 0 && cp < cp2; c--) {
if (strchr("\n\"\\", *cp))
(void) putc('\\', file);
(void) putc(*cp++, file);
}
putc('"', file);
} else if (type == T_HINFO) {
(void) fputs("\"?\"", file);
fprintf(file, "\n;; *** Warning *** OS-type missing");
}
break;
case T_SOA:
putc('\t', file);
if ((cp = p_fqname(cp, msg, file)) == NULL)
return (NULL);
putc(' ', file);
if ((cp = p_fqname(cp, msg, file)) == NULL)
return (NULL);
fputs(" (\n", file);
t = _getlong(cp); cp += sizeof(u_int32_t);
fprintf(file, "\t\t\t%lu\t; serial\n", (u_long)t);
t = _getlong(cp); cp += sizeof(u_int32_t);
fprintf(file, "\t\t\t%lu\t; refresh (%s)\n",
(u_long)t, __p_time(t));
t = _getlong(cp); cp += sizeof(u_int32_t);
fprintf(file, "\t\t\t%lu\t; retry (%s)\n",
(u_long)t, __p_time(t));
t = _getlong(cp); cp += sizeof(u_int32_t);
fprintf(file, "\t\t\t%lu\t; expire (%s)\n",
(u_long)t, __p_time(t));
t = _getlong(cp); cp += sizeof(u_int32_t);
fprintf(file, "\t\t\t%lu )\t; minimum (%s)",
(u_long)t, __p_time(t));
break;
case T_MX:
case T_AFSDB:
case T_RT:
fprintf(file, "\t%d ", _getshort(cp));
cp += INT16SZ;
if ((cp = p_fqname(cp, msg, file)) == NULL)
return (NULL);
break;
case T_PX:
fprintf(file, "\t%d ", _getshort(cp));
cp += INT16SZ;
if ((cp = p_fqname(cp, msg, file)) == NULL)
return (NULL);
putc(' ', file);
if ((cp = p_fqname(cp, msg, file)) == NULL)
return (NULL);
break;
case T_X25:
cp2 = cp + dlen;
(void) fputs("\t\"", file);
if ((n = (unsigned char) *cp++) != 0) {
for (c = n; c > 0 && cp < cp2; c--) {
if (strchr("\n\"\\", *cp))
(void) putc('\\', file);
(void) putc(*cp++, file);
}
}
putc('"', file);
break;
case T_TXT:
(void) putc('\t', file);
cp2 = cp1 + dlen;
while (cp < cp2) {
putc('"', file);
if ((n = (unsigned char) *cp++) != 0) {
for (c = n; c > 0 && cp < cp2; c--) {
if (strchr("\n\"\\", *cp))
(void) putc('\\', file);
(void) putc(*cp++, file);
}
}
putc('"', file);
if (cp < cp2)
putc(' ', file);
}
break;
case T_NSAP:
(void) fprintf(file, "\t%s", inet_nsap_ntoa(dlen, cp, NULL));
cp += dlen;
break;
case T_AAAA: {
char t[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255"];
fprintf(file, "\t%s", inet_ntop(AF_INET6, cp, t, sizeof t));
cp += dlen;
break;
}
case T_LOC: {
char t[255];
fprintf(file, "\t%s", loc_ntoa(cp, t));
cp += dlen;
break;
}
case T_NAPTR: {
u_int order, preference;
order = _getshort(cp); cp += INT16SZ;
preference = _getshort(cp); cp += INT16SZ;
fprintf(file, "\t%u %u ",order, preference);
/* Flags */
n = *cp++;
fprintf(file,"\"%.*s\" ", (int)n, cp);
cp += n;
/* Service */
n = *cp++;
fprintf(file,"\"%.*s\" ", (int)n, cp);
cp += n;
/* Regexp */
n = *cp++;
fprintf(file,"\"%.*s\" ", (int)n, cp);
cp += n;
if ((cp = p_fqname(cp, msg, file)) == NULL)
return (NULL);
break;
}
case T_SRV: {
u_int priority, weight, port;
priority = _getshort(cp); cp += INT16SZ;
weight = _getshort(cp); cp += INT16SZ;
port = _getshort(cp); cp += INT16SZ;
fprintf(file, "\t%u %u %u ", priority, weight, port);
if ((cp = p_fqname(cp, msg, file)) == NULL)
return (NULL);
break;
}
case T_MINFO:
case T_RP:
putc('\t', file);
if ((cp = p_fqname(cp, msg, file)) == NULL)
return (NULL);
putc(' ', file);
if ((cp = p_fqname(cp, msg, file)) == NULL)
return (NULL);
break;
case T_UINFO:
putc('\t', file);
fputs(cp, file);
cp += dlen;
break;
case T_UID:
case T_GID:
if (dlen == 4) {
fprintf(file,"\t%u", _getlong(cp));
cp += sizeof(int32_t);
}
break;
case T_WKS:
if (dlen < sizeof(u_int32_t) + 1)
break;
bcopy(cp, (char *)&inaddr, sizeof(inaddr));
cp += sizeof(u_int32_t);
fprintf(file, "\t%s %s ( ",
inet_ntoa(inaddr),
deproto((int) *cp));
cp += sizeof(u_char);
n = 0;
lcnt = 0;
while (cp < cp1 + dlen) {
c = *cp++;
do {
if (c & 0200) {
if (lcnt == 0) {
fputs("\n\t\t\t", file);
lcnt = 5;
}
fputs(dewks(n), file);
putc(' ', file);
lcnt--;
}
c <<= 1;
} while (++n & 07);
}
putc(')', file);
break;
case T_KEY:
putc('\t', file);
keyflags = _getshort(cp);
cp += 2;
fprintf(file,"0x%04x", keyflags ); /* flags */
fprintf(file," %u", *cp++); /* protocol */
fprintf(file," %u (", *cp++); /* algorithm */
n = b64_ntop(cp, (cp1 + dlen) - cp,
base64_key, sizeof base64_key);
for (c = 0; c < n; ++c) {
if (0 == (c & 0x3F))
fprintf(file, "\n\t");
putc(base64_key[c], file); /* public key data */
}
fprintf(file, " )");
if (n < 0)
fprintf(file, "\t; BAD BASE64");
fflush(file);
cp = cp1 + dlen;
break;
case T_SIG:
type = _getshort((u_char*)cp);
cp += INT16SZ;
fprintf(file, " %s", p_type(type));
fprintf(file, "\t%d", *cp++); /* algorithm */
/* Check label value and print error if wrong. */
n = *cp++;
c = dn_count_labels (rrname);
if (n != c)
fprintf(file, "\t; LABELS WRONG (%d should be %d)\n\t",
n, c);
/* orig ttl */
n = _getlong((u_char*)cp);
if (n != tmpttl)
fprintf(file, " %u", n);
cp += INT32SZ;
/* sig expire */
fprintf(file, " (\n\t%s",
__p_secstodate(_getlong((u_char*)cp)));
cp += INT32SZ;
/* time signed */
fprintf(file, " %s", __p_secstodate(_getlong((u_char*)cp)));
cp += INT32SZ;
/* sig footprint */
fprintf(file," %u ", _getshort((u_char*)cp));
cp += INT16SZ;
/* signer's name */
cp = p_fqname(cp, msg, file);
n = b64_ntop(cp, (cp1 + dlen) - cp,
base64_key, sizeof base64_key);
for (c = 0; c < n; c++) {
if (0 == (c & 0x3F))
fprintf (file, "\n\t");
putc(base64_key[c], file); /* signature */
}
/* Clean up... */
fprintf(file, " )");
if (n < 0)
fprintf(file, "\t; BAD BASE64");
fflush(file);
cp = cp1+dlen;
break;
#ifdef ALLOW_T_UNSPEC
case T_UNSPEC:
{
int NumBytes = 8;
u_char *DataPtr;
int i;
if (dlen < NumBytes) NumBytes = dlen;
fprintf(file, "\tFirst %d bytes of hex data:",
NumBytes);
for (i = 0, DataPtr = cp; i < NumBytes; i++, DataPtr++)
fprintf(file, " %x", *DataPtr);
cp += dlen;
}
break;
#endif /* ALLOW_T_UNSPEC */
default:
fprintf(file,"\t?%d?", type);
cp += dlen;
}
#if 0
fprintf(file, "\t; dlen=%d, ttl %s\n", dlen, __p_time(tmpttl));
#else
putc('\n', file);
#endif
if (cp - cp1 != dlen) {
fprintf(file,";; packet size error (found %ld, dlen was %d)\n",
(long)(cp - cp1), dlen);
cp = NULL;
}
return (cp);
}
/*
* 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_IN, (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_UINFO, "UINFO", "user information (nonstandard)"},
{T_UID, "UID", "user ID (nonstandard)"},
{T_GID, "GID", "group ID (nonstandard)"},
{T_NAPTR, "NAPTR", "URN Naming Authority"},
#ifdef ALLOW_T_UNSPEC
{T_UNSPEC, "UNSPEC", "unspecified data (nonstandard)"},
#endif /* ALLOW_T_UNSPEC */
{T_ANY, "ANY", "\"any\""},
{0, NULL, NULL}
};
int
__sym_ston(syms, name, success)
const struct res_sym *syms;
char *name;
int *success;
{
for (; 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(syms, number, success)
const struct res_sym *syms;
int number;
int *success;
{
static char unname[20];
for (; 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(syms, number, success)
const struct res_sym *syms;
int number;
int *success;
{
static char unname[20];
for (; 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(type)
int type;
{
return (__sym_ntos(__p_type_syms, type, (int *)0));
}
/*
* Return a mnemonic for class
*/
const char *
__p_class(class)
int class;
{
return (__sym_ntos(__p_class_syms, class, (int *)0));
}
/*
* Return a mnemonic for an option
*/
const char *
__p_option(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";
default:
(void)snprintf(nbuf, sizeof nbuf, "?0x%lx?", (u_long)option);
return (nbuf);
}
}
/*
* Return a mnemonic for a time to live
*/
const char *
__p_time(value)
u_int32_t value;
{
static char nbuf[40];
int secs, mins, hours, days, len = sizeof nbuf;
register char *p;
if (value == 0) {
strncpy(nbuf, "0 secs", sizeof(nbuf) - 1);
return(nbuf);
}
secs = value % 60;
value /= 60;
mins = value % 60;
value /= 60;
hours = value % 24;
value /= 24;
days = value;
value = 0;
#define PLURALIZE(x) x, (x == 1) ? "" : "s"
p = nbuf;
if (days) {
len -= snprintf(p, len, "%d day%s", PLURALIZE(days));
while (*++p)
len--;
}
if (hours) {
if (days) {
*p++ = ' ';
len--;
}
len -= snprintf(p, len, "%d hour%s", PLURALIZE(hours));
while (*++p)
len--;
}
if (mins) {
if (days || hours) {
*p++ = ' ';
len--;
}
len -= snprintf(p, len, "%d min%s", PLURALIZE(mins));
while (*++p)
len--;
}
if (secs || ! (days || hours || mins)) {
if (days || hours || mins) {
*p++ = ' ';
len--;
}
(void)snprintf(p, len, "%d sec%s", PLURALIZE(secs));
}
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 const 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)
const char **strptr;
{
u_int8_t retval = 0;
char *cp;
int exponent = 0;
int mantissa = 0;
cp = (char *)*strptr;
while (isdigit(*cp)) {
if (mantissa == 0)
mantissa = *cp - '0';
else
exponent++;
cp++;
}
if (*cp == '.') {
cp++;
if (isdigit(*cp)) {
if (mantissa == 0)
mantissa = *cp - '0';
else
exponent++;
cp++;
if (isdigit(*cp)) {
if (mantissa == 0)
mantissa = *cp - '0';
else
exponent++;
cp++;
}
else
exponent++;
}
}
else
exponent += 2;
if (mantissa == 0)
exponent = 0;
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)
const char **latlonstrptr;
int *which;
{
register const char *cp;
u_int32_t retval = 0;
int deg = 0, min = 0, secs = 0, secsfrac = 0;
cp = *latlonstrptr;
while (isdigit(*cp))
deg = deg * 10 + (*cp++ - '0');
while (isspace(*cp))
cp++;
if (!(isdigit(*cp)))
goto fndhemi;
while (isdigit(*cp))
min = min * 10 + (*cp++ - '0');
while (isspace(*cp))
cp++;
if (!(isdigit(*cp)))
goto fndhemi;
while (isdigit(*cp))
secs = secs * 10 + (*cp++ - '0');
if (*cp == '.') { /* decimal seconds */
cp++;
if (isdigit(*cp)) {
secsfrac = (*cp++ - '0') * 100;
if (isdigit(*cp)) {
secsfrac += (*cp++ - '0') * 10;
if (isdigit(*cp)) {
secsfrac += (*cp++ - '0');
}
}
}
}
while (!isspace(*cp)) /* if any trailing garbage */
cp++;
while (isspace(*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(*cp)) /* if any trailing garbage */
cp++;
while (isspace(*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(*cp))
altmeters = altmeters * 10 + (*cp++ - '0');
if (*cp == '.') { /* decimal meters */
cp++;
if (isdigit(*cp)) {
altfrac = (*cp++ - '0') * 10;
if (isdigit(*cp)) {
altfrac += (*cp++ - '0');
}
}
}
alt = (10000000 + (altsign * (altmeters * 100 + altfrac)));
while (!isspace(*cp) && (cp < maxcp)) /* if trailing garbage or m */
cp++;
while (isspace(*cp) && (cp < maxcp))
cp++;
if (cp >= maxcp)
goto defaults;
siz = precsize_aton(&cp);
while (!isspace(*cp) && (cp < maxcp)) /* if trailing garbage or m */
cp++;
while (isspace(*cp) && (cp < maxcp))
cp++;
if (cp >= maxcp)
goto defaults;
hp = precsize_aton(&cp);
while (!isspace(*cp) && (cp < maxcp)) /* if trailing garbage or m */
cp++;
while (isspace(*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 const char *const error = "?";
register const u_char *cp = binary;
int latdeg, latmin, latsec, latsecfrac;
int longdeg, longmin, longsec, longsecfrac;
char northsouth, eastwest;
int altmeters, altfrac, altsign;
const int referencealt = 100000 * 100;
int32_t latval, longval, altval;
u_int32_t templ;
u_int8_t sizeval, hpval, vpval, versionval;
const char *sizestr, *hpstr, *vpstr;
versionval = *cp++;
if (versionval) {
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((char *)sizestr);
if (hpstr != error)
free((char *)hpstr);
if (vpstr != error)
free((char *)vpstr);
return (ascii);
}
/* Return the number of DNS hierarchy levels in the name. */
int
__dn_count_labels(name)
char *name;
{
int i, len, count;
len = strlen(name);
for(i = 0, count = 0; i < len; i++) {
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 (secs)
unsigned long secs;
{
static char output[15]; /* YYYYMMDDHHMMSS and null */
time_t clock = secs;
struct tm time;
(void)gmtime_r(&clock, &time);
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);
}
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