542 lines
13 KiB
C
542 lines
13 KiB
C
/*
|
||
* ++Copyright++ 1985, 1989
|
||
* -
|
||
* Copyright (c) 1985, 1989
|
||
* 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--
|
||
*/
|
||
|
||
#ifndef lint
|
||
static char sccsid[] = "@(#)debug.c 5.26 (Berkeley) 3/21/91";
|
||
static char rcsid[] = "$Id: debug.c,v 1.1.1.1 1994/09/22 21:36:01 pst Exp $";
|
||
#endif /* not lint */
|
||
|
||
/*
|
||
*******************************************************************************
|
||
*
|
||
* debug.c --
|
||
*
|
||
* Routines to print out packets received from a name server query.
|
||
*
|
||
* Modified version of 4.3BSD BIND res_debug.c 5.30 6/27/90
|
||
*
|
||
*******************************************************************************
|
||
*/
|
||
|
||
#include <sys/param.h>
|
||
#include <netinet/in.h>
|
||
#include <netiso/iso.h>
|
||
#include <arpa/nameser.h>
|
||
#include <arpa/inet.h>
|
||
#include <resolv.h>
|
||
#include <netdb.h>
|
||
#include <stdio.h>
|
||
#include "res.h"
|
||
|
||
/*
|
||
* Imported from res_debug.c
|
||
*/
|
||
extern char *_res_resultcodes[];
|
||
extern char *_res_opcodes[];
|
||
|
||
/*
|
||
* Used to highlight the start of a record when printing it.
|
||
*/
|
||
#define INDENT " -> "
|
||
|
||
|
||
|
||
/*
|
||
* Print the contents of a query.
|
||
* This is intended to be primarily a debugging routine.
|
||
*/
|
||
|
||
Print_query(msg, eom, printHeader)
|
||
char *msg, *eom;
|
||
int printHeader;
|
||
{
|
||
Fprint_query(msg, eom, printHeader,stdout);
|
||
}
|
||
|
||
Fprint_query(msg, eom, printHeader,file)
|
||
u_char *msg, *eom;
|
||
int printHeader;
|
||
FILE *file;
|
||
{
|
||
register u_char *cp;
|
||
register HEADER *hp;
|
||
register int n;
|
||
short class;
|
||
short type;
|
||
|
||
/*
|
||
* Print header fields.
|
||
*/
|
||
hp = (HEADER *)msg;
|
||
cp = msg + HFIXEDSZ;
|
||
if (printHeader || (_res.options & RES_DEBUG2)) {
|
||
fprintf(file," HEADER:\n");
|
||
fprintf(file,"\topcode = %s", _res_opcodes[hp->opcode]);
|
||
fprintf(file,", id = %d", ntohs(hp->id));
|
||
fprintf(file,", rcode = %s\n", _res_resultcodes[hp->rcode]);
|
||
fprintf(file,"\theader flags: ");
|
||
if (hp->qr) {
|
||
fprintf(file," response");
|
||
} else {
|
||
fprintf(file," query");
|
||
}
|
||
if (hp->aa)
|
||
fprintf(file,", auth. answer");
|
||
if (hp->tc)
|
||
fprintf(file,", truncation");
|
||
if (hp->rd)
|
||
fprintf(file,", want recursion");
|
||
if (hp->ra)
|
||
fprintf(file,", recursion avail.");
|
||
if (hp->pr)
|
||
fprintf(file,", primary");
|
||
fprintf(file,"\n\tquestions = %d", ntohs(hp->qdcount));
|
||
fprintf(file,", answers = %d", ntohs(hp->ancount));
|
||
fprintf(file,", authority records = %d", ntohs(hp->nscount));
|
||
fprintf(file,", additional = %d\n\n", ntohs(hp->arcount));
|
||
}
|
||
|
||
/*
|
||
* Print question records.
|
||
*/
|
||
if (n = ntohs(hp->qdcount)) {
|
||
fprintf(file," QUESTIONS:\n");
|
||
while (--n >= 0) {
|
||
fprintf(file,"\t");
|
||
cp = Print_cdname(cp, msg, eom, file);
|
||
if (cp == NULL)
|
||
return;
|
||
type = _getshort((u_char*)cp);
|
||
cp += INT16SZ;
|
||
class = _getshort((u_char*)cp);
|
||
cp += INT16SZ;
|
||
fprintf(file,", type = %s", p_type(type));
|
||
fprintf(file,", class = %s\n", p_class(class));
|
||
}
|
||
}
|
||
/*
|
||
* Print authoritative answer records
|
||
*/
|
||
if (n = ntohs(hp->ancount)) {
|
||
fprintf(file," ANSWERS:\n");
|
||
while (--n >= 0) {
|
||
fprintf(file, INDENT);
|
||
cp = Print_rr(cp, msg, eom, file);
|
||
if (cp == NULL)
|
||
return;
|
||
}
|
||
}
|
||
/*
|
||
* print name server records
|
||
*/
|
||
if (n = ntohs(hp->nscount)) {
|
||
fprintf(file," AUTHORITY RECORDS:\n");
|
||
while (--n >= 0) {
|
||
fprintf(file, INDENT);
|
||
cp = Print_rr(cp, msg, eom, file);
|
||
if (cp == NULL)
|
||
return;
|
||
}
|
||
}
|
||
/*
|
||
* print additional records
|
||
*/
|
||
if (n = ntohs(hp->arcount)) {
|
||
fprintf(file," ADDITIONAL RECORDS:\n");
|
||
while (--n >= 0) {
|
||
fprintf(file, INDENT);
|
||
cp = Print_rr(cp, msg, eom, file);
|
||
if (cp == NULL)
|
||
return;
|
||
}
|
||
}
|
||
fprintf(file,"\n------------\n");
|
||
}
|
||
|
||
|
||
u_char *
|
||
Print_cdname_sub(cp, msg, eom, file, format)
|
||
u_char *cp, *msg, *eom;
|
||
FILE *file;
|
||
int format;
|
||
{
|
||
int n;
|
||
char name[MAXDNAME];
|
||
|
||
n = dn_expand(msg, eom, cp, name, sizeof name);
|
||
if (n < 0)
|
||
return (NULL);
|
||
if (name[0] == '\0') {
|
||
(void) strcpy(name, "(root)");
|
||
}
|
||
if (format) {
|
||
fprintf(file, "%-30s", name);
|
||
} else {
|
||
fputs(name, file);
|
||
}
|
||
return (cp + n);
|
||
}
|
||
|
||
u_char *
|
||
Print_cdname(cp, msg, eom, file)
|
||
u_char *cp, *msg, *eom;
|
||
FILE *file;
|
||
{
|
||
return (Print_cdname_sub(cp, msg, eom, file, 0));
|
||
}
|
||
|
||
u_char *
|
||
Print_cdname2(cp, msg, eom, file)
|
||
u_char *cp, *msg, *eom;
|
||
FILE *file;
|
||
{
|
||
return (Print_cdname_sub(cp, msg, eom, file, 1));
|
||
}
|
||
|
||
/*
|
||
* Print resource record fields in human readable form.
|
||
*/
|
||
u_char *
|
||
Print_rr(cp, msg, eom, file)
|
||
u_char *cp, *msg, *eom;
|
||
FILE *file;
|
||
{
|
||
int type, class, dlen, n, c;
|
||
u_int32_t rrttl, ttl;
|
||
struct in_addr inaddr;
|
||
struct iso_addr isoa;
|
||
u_char *cp1, *cp2;
|
||
int debug;
|
||
|
||
if ((cp = Print_cdname(cp, msg, eom, file)) == NULL) {
|
||
fprintf(file, "(name truncated?)\n");
|
||
return (NULL); /* compression error */
|
||
}
|
||
|
||
type = _getshort((u_char*)cp);
|
||
cp += INT16SZ;
|
||
class = _getshort((u_char*)cp);
|
||
cp += INT16SZ;
|
||
rrttl = _getlong((u_char*)cp);
|
||
cp += INT32SZ;
|
||
dlen = _getshort((u_char*)cp);
|
||
cp += INT16SZ;
|
||
|
||
debug = _res.options & (RES_DEBUG|RES_DEBUG2);
|
||
if (debug) {
|
||
if (_res.options & RES_DEBUG2) {
|
||
fprintf(file,"\n\ttype = %s, class = %s, dlen = %d",
|
||
p_type(type), p_class(class), dlen);
|
||
}
|
||
if (type == T_SOA) {
|
||
fprintf(file,"\n\tttl = %lu (%s)", rrttl, p_time(rrttl));
|
||
}
|
||
(void) putc('\n', file);
|
||
}
|
||
|
||
cp1 = cp;
|
||
|
||
/*
|
||
* 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,"\tinternet address = %s\n",
|
||
inet_ntoa(inaddr));
|
||
cp += dlen;
|
||
} else if (dlen == 7) {
|
||
fprintf(file,"\tinternet address = %s",
|
||
inet_ntoa(inaddr));
|
||
fprintf(file,", protocol = %d", cp[4]);
|
||
fprintf(file,", port = %d\n",
|
||
(cp[5] << 8) + cp[6]);
|
||
cp += dlen;
|
||
}
|
||
break;
|
||
default:
|
||
fprintf(file,"\taddress, class = %d, len = %d\n",
|
||
class, dlen);
|
||
cp += dlen;
|
||
}
|
||
break;
|
||
|
||
case T_CNAME:
|
||
fprintf(file,"\tcanonical name = ");
|
||
goto doname;
|
||
|
||
case T_MG:
|
||
fprintf(file,"\tmail group member = ");
|
||
goto doname;
|
||
case T_MB:
|
||
fprintf(file,"\tmail box = ");
|
||
goto doname;
|
||
case T_MR:
|
||
fprintf(file,"\tmailbox rename = ");
|
||
goto doname;
|
||
case T_MX:
|
||
fprintf(file,"\tpreference = %u",_getshort((u_char*)cp));
|
||
cp += INT16SZ;
|
||
fprintf(file,", mail exchanger = ");
|
||
goto doname;
|
||
case T_RT:
|
||
fprintf(file,"\tpreference = %u",_getshort((u_char*)cp));
|
||
cp += INT16SZ;
|
||
fprintf(file,", router = ");
|
||
goto doname;
|
||
case T_AFSDB:
|
||
fprintf(file,"\tsubtype = %d",_getshort((u_char*)cp));
|
||
cp += INT16SZ;
|
||
fprintf(file,", DCE/AFS server = ");
|
||
goto doname;
|
||
case T_NS:
|
||
fprintf(file,"\tnameserver = ");
|
||
goto doname;
|
||
case T_PTR:
|
||
fprintf(file,"\tname = ");
|
||
doname:
|
||
cp = Print_cdname(cp, msg, eom, file);
|
||
(void) putc('\n', file);
|
||
break;
|
||
|
||
case T_HINFO:
|
||
if (n = *cp++) {
|
||
fprintf(file,"\tCPU = %.*s", n, cp);
|
||
cp += n;
|
||
}
|
||
if (n = *cp++) {
|
||
fprintf(file,"\tOS = %.*s\n", n, cp);
|
||
cp += n;
|
||
}
|
||
break;
|
||
|
||
case T_ISDN:
|
||
if (n = *cp++) {
|
||
fprintf(file,"\tISDN = \"%.*s", n, cp);
|
||
cp += n;
|
||
}
|
||
if (n = *cp++) {
|
||
fprintf(file,"-%.*s\"\n", n, cp);
|
||
cp += n;
|
||
} else fprintf(file,"\"\n");
|
||
break;
|
||
|
||
|
||
case T_SOA:
|
||
if (!debug)
|
||
(void) putc('\n', file);
|
||
fprintf(file,"\torigin = ");
|
||
cp = Print_cdname(cp, msg, eom, file);
|
||
fprintf(file,"\n\tmail addr = ");
|
||
cp = Print_cdname(cp, msg, eom, file);
|
||
fprintf(file,"\n\tserial = %lu", _getlong((u_char*)cp));
|
||
cp += INT32SZ;
|
||
ttl = _getlong((u_char*)cp);
|
||
fprintf(file,"\n\trefresh = %lu (%s)", ttl, p_time(ttl));
|
||
cp += INT32SZ;
|
||
ttl = _getlong((u_char*)cp);
|
||
fprintf(file,"\n\tretry = %lu (%s)", ttl, p_time(ttl));
|
||
cp += INT32SZ;
|
||
ttl = _getlong((u_char*)cp);
|
||
fprintf(file,"\n\texpire = %lu (%s)", ttl, p_time(ttl));
|
||
cp += INT32SZ;
|
||
ttl = _getlong((u_char*)cp);
|
||
fprintf(file,
|
||
"\n\tminimum ttl = %lu (%s)\n", ttl, p_time(ttl));
|
||
cp += INT32SZ;
|
||
break;
|
||
|
||
case T_MINFO:
|
||
if (!debug)
|
||
(void) putc('\n', file);
|
||
fprintf(file,"\trequests = ");
|
||
cp = Print_cdname(cp, msg, eom, file);
|
||
fprintf(file,"\n\terrors = ");
|
||
cp = Print_cdname(cp, msg, eom, file);
|
||
(void) putc('\n', file);
|
||
break;
|
||
case T_RP:
|
||
if (!debug)
|
||
(void) putc('\n', file);
|
||
fprintf(file,"\tmailbox = ");
|
||
cp = Print_cdname(cp, msg, eom, file);
|
||
fprintf(file,"\n\ttext = ");
|
||
cp = Print_cdname(cp, msg, eom, file);
|
||
(void) putc('\n', file);
|
||
break;
|
||
|
||
case T_TXT:
|
||
(void) fputs("\ttext = \"", file);
|
||
cp2 = cp1 + dlen;
|
||
while (cp < cp2) {
|
||
if (n = (unsigned char) *cp++) {
|
||
for (c = n; c > 0 && cp < cp2; c--)
|
||
if (*cp == '\n') {
|
||
(void) putc('\\', file);
|
||
(void) putc(*cp++, file);
|
||
} else
|
||
(void) putc(*cp++, file);
|
||
}
|
||
}
|
||
(void) fputs("\"\n", file);
|
||
break;
|
||
|
||
case T_X25:
|
||
(void) fputs("\tX25 = \"", file);
|
||
cp2 = cp1 + dlen;
|
||
while (cp < cp2) {
|
||
if (n = (unsigned char) *cp++) {
|
||
for (c = n; c > 0 && cp < cp2; c--)
|
||
if (*cp == '\n') {
|
||
(void) putc('\\', file);
|
||
(void) putc(*cp++, file);
|
||
} else
|
||
(void) putc(*cp++, file);
|
||
}
|
||
}
|
||
(void) fputs("\"\n", file);
|
||
break;
|
||
|
||
case T_NSAP:
|
||
isoa.isoa_len = dlen;
|
||
if (isoa.isoa_len > sizeof(isoa.isoa_genaddr))
|
||
isoa.isoa_len = sizeof(isoa.isoa_genaddr);
|
||
bcopy(cp, isoa.isoa_genaddr, isoa.isoa_len);
|
||
fprintf(file, "\tnsap = %s\n", iso_ntoa(&isoa));
|
||
cp += dlen;
|
||
break;
|
||
|
||
case T_UINFO:
|
||
fprintf(file,"\tuser info = %s\n", cp);
|
||
cp += dlen;
|
||
break;
|
||
|
||
case T_UID:
|
||
case T_GID:
|
||
if (dlen == 4) {
|
||
fprintf(file,"\t%cid = %u\n",type == T_UID ? 'u' : 'g',
|
||
_getlong((u_char*)cp));
|
||
cp += INT32SZ;
|
||
} else {
|
||
fprintf(file,"\t%cid of length %d?\n",
|
||
type == T_UID ? 'u' : 'g', dlen);
|
||
cp += dlen;
|
||
}
|
||
break;
|
||
|
||
case T_WKS: {
|
||
struct protoent *protoPtr;
|
||
|
||
if (dlen < INT32SZ + 1)
|
||
break;
|
||
if (!debug)
|
||
(void) putc('\n', file);
|
||
bcopy(cp, (char *)&inaddr, INADDRSZ);
|
||
cp += INT32SZ;
|
||
if ((protoPtr = getprotobynumber(*cp)) != NULL) {
|
||
fprintf(file,"\tinet address = %s, protocol = %s\n\t",
|
||
inet_ntoa(inaddr), protoPtr->p_name);
|
||
} else {
|
||
fprintf(file,"\tinet address = %s, protocol = %d\n\t",
|
||
inet_ntoa(inaddr), *cp);
|
||
}
|
||
cp++;
|
||
n = 0;
|
||
while (cp < cp1 + dlen) {
|
||
c = *cp++;
|
||
do {
|
||
struct servent *s;
|
||
|
||
if (c & 0200) {
|
||
s = getservbyport((int)htons(n),
|
||
protoPtr ? protoPtr->p_name : NULL);
|
||
if (s != NULL) {
|
||
fprintf(file," %s", s->s_name);
|
||
} else {
|
||
fprintf(file," #%d", n);
|
||
}
|
||
}
|
||
c <<= 1;
|
||
} while (++n & 07);
|
||
}
|
||
putc('\n',file);
|
||
}
|
||
break;
|
||
|
||
case T_NULL:
|
||
fprintf(file, "\tNULL (dlen %d)\n", dlen);
|
||
cp += dlen;
|
||
break;
|
||
|
||
default:
|
||
fprintf(file,"\t??? unknown type %d ???\n", type);
|
||
cp += dlen;
|
||
}
|
||
if (_res.options & RES_DEBUG && type != T_SOA) {
|
||
fprintf(file,"\tttl = %lu (%s)\n", rrttl, p_time(rrttl));
|
||
}
|
||
if (cp != cp1 + dlen) {
|
||
fprintf(file,
|
||
"\n*** Error: record size incorrect (%d != %d)\n\n",
|
||
cp - cp1, dlen);
|
||
cp = NULL;
|
||
}
|
||
return (cp);
|
||
}
|