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freebsd-dev/lib/libc/net/res_debug.c
Peter Wemm f991bb5181 Sigh, back out the last bright idea I had here about compiling the res_* 
routines from contrib/bind directly.  There were too many problems,
including having to add -DUSE_OPTIONS_H to the entire libc source in
order for the contrib code to pick up it's options, and so on.

Instead, I've merged the changes, libc is now self contained again.
1996-08-30 21:13:42 +00:00

1209 lines
27 KiB
C
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/*
* ++Copyright++ 1985, 1990, 1993
* -
* 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.
* -
* --Copyright--
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)res_debug.c 8.1 (Berkeley) 6/4/93";
static char rcsid[] = "$Id: res_debug.c,v 8.12 1996/08/05 08:31:35 vixie Exp $";
#endif /* LIBC_SCCS and not lint */
#include <sys/param.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "res_config.h"
#include <arpa/nameser.h>
#include <stdio.h>
#include <netdb.h>
#include <resolv.h>
#include <ctype.h>
#include <string.h>
extern const char *_res_opcodes[];
extern const char *_res_resultcodes[];
/* XXX: we should use getservbyport() instead. */
static const 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) sprintf(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) sprintf(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)) ) {
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 += INT16SZ;
cp += INT16SZ;
cp += INT32SZ;
dlen = _getshort((u_char*)cp);
cp += INT16SZ;
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 = cp + 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 ((!_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)) ) {
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));
}
/* 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];
int n;
if ((n = dn_expand(msg, cp + MAXCDNAME, cp, name, sizeof name)) < 0)
return (NULL);
if (name[0] == '\0') {
putc('.', file);
} else {
fputs(name, file);
if (name[strlen(name) - 1] != '.')
putc('.', file);
}
return (cp + 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;
if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
h_errno = NETDB_INTERNAL;
return (NULL);
}
if ((cp = p_fqname(cp, msg, file)) == NULL)
return (NULL); /* compression error */
type = _getshort((u_char*)cp);
cp += INT16SZ;
class = _getshort((u_char*)cp);
cp += INT16SZ;
tmpttl = _getlong((u_char*)cp);
cp += INT32SZ;
dlen = _getshort((u_char*)cp);
cp += INT16SZ;
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, INADDRSZ);
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 += INADDRSZ;
protocol = *(u_char*)cp;
cp += sizeof(u_char);
port = _getshort((u_char*)cp);
cp += INT16SZ;
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:
(void) fputs("\t\"", file);
cp2 = cp + dlen;
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((u_char*)cp); cp += INT32SZ;
fprintf(file, "\t\t\t%lu\t; serial\n", (u_long)t);
t = _getlong((u_char*)cp); cp += INT32SZ;
fprintf(file, "\t\t\t%lu\t; refresh (%s)\n",
(u_long)t, __p_time(t));
t = _getlong((u_char*)cp); cp += INT32SZ;
fprintf(file, "\t\t\t%lu\t; retry (%s)\n",
(u_long)t, __p_time(t));
t = _getlong((u_char*)cp); cp += INT32SZ;
fprintf(file, "\t\t\t%lu\t; expire (%s)\n",
(u_long)t, __p_time(t));
t = _getlong((u_char*)cp); cp += INT32SZ;
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((u_char*)cp));
cp += INT16SZ;
if ((cp = p_fqname(cp, msg, file)) == NULL)
return (NULL);
break;
case T_PX:
fprintf(file, "\t%d ", _getshort((u_char*)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_TXT:
case T_X25:
(void) fputs("\t\"", file);
cp2 = cp1 + dlen;
while (cp < cp2) {
if (n = (unsigned char) *cp++) {
for (c = n; c > 0 && cp < cp2; c--) {
if (strchr("\n\"\\", *cp))
(void) putc('\\', file);
(void) putc(*cp++, file);
}
}
}
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\n", inet_ntop(AF_INET6, cp, t, sizeof t));
cp += dlen;
break;
}
case T_LOC: {
char t[255];
(void) fprintf(file, "\t%s\n", loc_ntoa(cp, t));
cp += dlen;
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((char *)cp, file);
cp += dlen;
break;
case T_UID:
case T_GID:
if (dlen == 4) {
fprintf(file, "\t%u", _getlong((u_char*)cp));
cp += INT32SZ;
}
break;
case T_WKS:
if (dlen < INT32SZ + 1)
break;
bcopy(cp, (char *)&inaddr, INADDRSZ);
cp += INT32SZ;
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;
#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 %d, dlen was %d)\n",
cp - cp1, dlen);
cp = NULL;
}
return (cp);
}
/*
* Return a string for the type
*/
const char *
__p_type(type)
int type;
{
static char nbuf[20];
switch (type) {
case T_A: return "A";
case T_NS: return "NS";
case T_CNAME: return "CNAME";
case T_SOA: return "SOA";
case T_MB: return "MB";
case T_MG: return "MG";
case T_MR: return "MR";
case T_NULL: return "NULL";
case T_WKS: return "WKS";
case T_PTR: return "PTR";
case T_HINFO: return "HINFO";
case T_MINFO: return "MINFO";
case T_MX: return "MX";
case T_TXT: return "TXT";
case T_RP: return "RP";
case T_AFSDB: return "AFSDB";
case T_X25: return "X25";
case T_ISDN: return "ISDN";
case T_RT: return "RT";
case T_NSAP: return "NSAP";
case T_NSAP_PTR: return "NSAP_PTR";
case T_SIG: return "SIG";
case T_KEY: return "KEY";
case T_PX: return "PX";
case T_GPOS: return "GPOS";
case T_AAAA: return "AAAA";
case T_LOC: return "LOC";
case T_AXFR: return "AXFR";
case T_MAILB: return "MAILB";
case T_MAILA: return "MAILA";
case T_ANY: return "ANY";
case T_UINFO: return "UINFO";
case T_UID: return "UID";
case T_GID: return "GID";
#ifdef ALLOW_T_UNSPEC
case T_UNSPEC: return "UNSPEC";
#endif /* ALLOW_T_UNSPEC */
default: (void)sprintf(nbuf, "%d", type); return (nbuf);
}
}
/*
* Return a mnemonic for class
*/
const char *
__p_class(class)
int class;
{
static char nbuf[20];
switch (class) {
case C_IN: return "IN";
case C_HS: return "HS";
case C_ANY: return "ANY";
default: (void)sprintf(nbuf, "%d", class); return (nbuf);
}
}
/*
* 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: sprintf(nbuf, "?0x%lx?", (u_long)option);
return (nbuf);
}
}
/*
* Return a mnemonic for a time to live
*/
char *
__p_time(value)
u_int32_t value;
{
static char nbuf[40];
int secs, mins, hours, days;
register char *p;
if (value == 0) {
strcpy(nbuf, "0 secs");
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) {
(void)sprintf(p, "%d day%s", PLURALIZE(days));
while (*++p);
}
if (hours) {
if (days)
*p++ = ' ';
(void)sprintf(p, "%d hour%s", PLURALIZE(hours));
while (*++p);
}
if (mins) {
if (days || hours)
*p++ = ' ';
(void)sprintf(p, "%d min%s", PLURALIZE(mins));
while (*++p);
}
if (secs || ! (days || hours || mins)) {
if (days || hours || mins)
*p++ = ' ';
(void)sprintf(p, "%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 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;
register char *cp;
register int exponent;
register int mantissa;
cp = *strptr;
while (isdigit(*cp))
mval = mval * 10 + (*cp++ - '0');
if (*cp == '.') { /* centimeters */
cp++;
if (isdigit(*cp)) {
cmval = (*cp++ - '0') * 10;
if (isdigit(*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;
{
register char *cp;
u_int32_t retval;
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. */
char *
loc_ntoa(binary, ascii)
const u_char *binary;
char *ascii;
{
static char *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;
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(sizestr);
if (hpstr != error)
free(hpstr);
if (vpstr != error)
free(vpstr);
return (ascii);
}
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