hardenedbsd/HardenedBSD
1
0
Fork 0
mirror of https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git synced 2024-12-30 15:38:06 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity
a6054afb48
HardenedBSD/contrib/bind/bin/nslookup/debug.c
John Birrell d8a6b1e31e Add #include string.h to get prototypes.
1998-08-18 01:47:44 +00:00

648 lines
16 KiB
C
Raw Blame History

/*
* 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.
*/
#ifndef lint
static char sccsid[] = "@(#)debug.c 5.26 (Berkeley) 3/21/91";
static char rcsid[] = "$Id: debug.c,v 8.11 1998/03/19 19:30:54 halley 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 "port_before.h"
#include <sys/param.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <resolv.h>
#include <stdio.h>
#include <string.h>
#include "port_after.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.
*/
void
Print_query(const u_char *msg, const u_char *eom, int printHeader) {
Fprint_query(msg, eom, printHeader, stdout);
}
void
Fprint_query(const u_char *msg, const u_char *eom, int printHeader, FILE *file)
{
const u_char *cp;
const HEADER *hp;
int n;
u_int class, 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->unused)
fprintf(file,", UNUSED-QUERY_BIT");
if (hp->ad)
fprintf(file,", authentic data");
if (hp->cd)
fprintf(file,", checking disabled");
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.
*/
n = ntohs(hp->qdcount);
if (n > 0) {
fprintf(file," QUESTIONS:\n");
while (--n >= 0) {
fprintf(file,"\t");
cp = Print_cdname(cp, msg, eom, file);
if (cp == NULL)
return;
type = ns_get16((u_char*)cp);
cp += INT16SZ;
class = ns_get16((u_char*)cp);
cp += INT16SZ;
fprintf(file,", type = %s", p_type(type));
fprintf(file,", class = %s\n", p_class(class));
}
}
/*
* Print authoritative answer records
*/
n = ntohs(hp->ancount);
if (n > 0) {
fprintf(file," ANSWERS:\n");
if (type == ns_t_a && n > MAXADDRS) {
printf("Limiting response to MAX Addrs = %d \n",
MAXADDRS);
n = MAXADDRS;
}
while (--n >= 0) {
fprintf(file, INDENT);
cp = Print_rr(cp, msg, eom, file);
if (cp == NULL)
return;
}
}
/*
* print name server records
*/
n = ntohs(hp->nscount);
if (n > 0) {
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
*/
n = ntohs(hp->arcount);
if (n > 0) {
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");
}
const u_char *
Print_cdname_sub(const u_char *cp, const u_char *msg, const u_char *eom,
FILE *file, int format)
{
char name[MAXDNAME];
int n;
n = dn_expand(msg, eom, cp, name, sizeof name);
if (n < 0)
return (NULL);
if (name[0] == '\0')
strcpy(name, "(root)");
if (format)
fprintf(file, "%-30s", name);
else
fputs(name, file);
return (cp + n);
}
const u_char *
Print_cdname(const u_char *cp, const u_char *msg, const u_char *eom,
FILE *file)
{
return (Print_cdname_sub(cp, msg, eom, file, 0));
}
const u_char *
Print_cdname2(const u_char *cp, const u_char *msg, const u_char *eom,
FILE *file)
{
return (Print_cdname_sub(cp, msg, eom, file, 1));
}
#define BOUNDS_CHECK(ptr, count) \
do { \
if ((ptr) + (count) > eom) { \
fprintf(file, "(form error.)\n"); \
return (NULL); \
} \
} while (0)
/*
* Print resource record fields in human readable form (not master file form).
*/
const u_char *
Print_rr(const u_char *ocp, const u_char *msg, const u_char *eom, FILE *file) {
u_int type, class;
int dlen, n, c, debug;
u_long rrttl, ttl;
struct in_addr inaddr;
const u_char *cp, *cp1, *cp2;
if ((cp = Print_cdname(ocp, msg, eom, file)) == NULL) {
fprintf(file, "(name truncated?)\n");
return (NULL); /* compression error */
}
BOUNDS_CHECK(cp, 3 * INT16SZ + INT32SZ);
NS_GET16(type, cp);
NS_GET16(class, cp);
NS_GET32(rrttl, cp);
NS_GET16(dlen, cp);
BOUNDS_CHECK(cp, dlen);
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));
putc('\n', file);
}
cp1 = cp;
/*
* Print type specific data, if appropriate
*/
switch (type) {
case T_A:
BOUNDS_CHECK(cp, INADDRSZ);
memcpy(&inaddr, cp, INADDRSZ);
fprintf(file,"\tinternet address = %s\n", inet_ntoa(inaddr));
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:
BOUNDS_CHECK(cp, INT16SZ);
fprintf(file,"\tpreference = %u",ns_get16((u_char*)cp));
cp += INT16SZ;
fprintf(file,", mail exchanger = ");
goto doname;
case T_NAPTR:
BOUNDS_CHECK(cp, 2 * INT16SZ);
fprintf(file, "\torder = %u",ns_get16((u_char*)cp));
cp += INT16SZ;
fprintf(file,", preference = %u\n", ns_get16((u_char*)cp));
cp += INT16SZ;
/* Flags */
BOUNDS_CHECK(cp, 1);
n = *cp++;
BOUNDS_CHECK(cp, n);
fprintf(file,"\tflags = \"%.*s\"\n", (int)n, cp);
cp += n;
/* Service */
BOUNDS_CHECK(cp, 1);
n = *cp++;
BOUNDS_CHECK(cp, n);
fprintf(file,"\tservices = \"%.*s\"\n", (int)n, cp);
cp += n;
/* Regexp */
BOUNDS_CHECK(cp, 1);
n = *cp++;
BOUNDS_CHECK(cp, n);
fprintf(file,"\trule = \"%.*s\"\n", (int)n, cp);
cp += n;
/* Replacement */
fprintf(file,"\treplacement = ");
cp = Print_cdname(cp, msg, eom, file);
if (cp == NULL) {
fprintf(file, "(replacement truncated?)\n");
return (NULL); /* compression error */
}
(void) putc('\n', file);
break;
case T_SRV:
BOUNDS_CHECK(cp, 3 * INT16SZ);
fprintf(file, "\tpriority = %u",ns_get16((u_char*)cp));
cp += INT16SZ;
fprintf(file,", weight = %u", ns_get16((u_char*)cp));
cp += INT16SZ;
fprintf(file,", port= %u\n", ns_get16((u_char*)cp));
cp += INT16SZ;
fprintf(file,"\thost = ");
goto doname;
case T_PX:
BOUNDS_CHECK(cp, INT16SZ);
fprintf(file,"\tpreference = %u",ns_get16((u_char*)cp));
cp += INT16SZ;
fprintf(file,", RFC 822 = ");
cp = Print_cdname(cp, msg, eom, file);
if (cp == NULL) {
fprintf(file, "(name truncated?)\n");
return (NULL); /* compression error */
}
fprintf(file,"\nX.400 = ");
cp = Print_cdname(cp, msg, eom, file);
if (cp == NULL) {
fprintf(file, "(name truncated?)\n");
return (NULL); /* compression error */
}
(void) putc('\n', file);
break;
case T_RT:
BOUNDS_CHECK(cp, INT16SZ);
fprintf(file,"\tpreference = %u",ns_get16((u_char*)cp));
cp += INT16SZ;
fprintf(file,", router = ");
goto doname;
case T_AFSDB:
BOUNDS_CHECK(cp, INT16SZ);
fprintf(file,"\tsubtype = %d",ns_get16((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);
if (cp == NULL) {
fprintf(file, "(name truncated?)\n");
return (NULL); /* compression error */
}
(void) putc('\n', file);
break;
case T_HINFO:
cp2 = cp + dlen;
BOUNDS_CHECK(cp, 1);
if ((n = *cp++) != 0) {
BOUNDS_CHECK(cp, n);
fprintf(file,"\tCPU = %.*s", n, cp);
cp += n;
}
if ((cp < cp2) && ((n = *cp++) != 0)) {
BOUNDS_CHECK(cp, n);
fprintf(file,"\tOS = %.*s\n", n, cp);
cp += n;
} else fprintf(file, "\n*** Warning *** OS-type missing\n");
break;
case T_ISDN:
cp2 = cp + dlen;
BOUNDS_CHECK(cp, 1);
n = *cp++;
if (n != 0) {
BOUNDS_CHECK(cp, n);
fprintf(file,"\tISDN = \"%.*s", n, cp);
cp += n;
}
if ((cp < cp2) && (n = *cp++)) {
BOUNDS_CHECK(cp, n);
fprintf(file,"-%.*s\"\n", n, cp);
cp += n;
} else fprintf(file,"\"\n");
break;
case T_SOA:
if (!debug)
putc('\n', file);
fprintf(file,"\torigin = ");
cp = Print_cdname(cp, msg, eom, file);
if (cp == NULL) {
fprintf(file, "(name truncated?)\n");
return (NULL); /* compression error */
}
fprintf(file,"\n\tmail addr = ");
cp = Print_cdname(cp, msg, eom, file);
if (cp == NULL) {
fprintf(file, "(name truncated?)\n");
return (NULL); /* compression error */
}
BOUNDS_CHECK(cp, 5 * INT32SZ);
fprintf(file,"\n\tserial = %lu", ns_get32((u_char*)cp));
cp += INT32SZ;
ttl = ns_get32((u_char*)cp);
fprintf(file,"\n\trefresh = %lu (%s)", ttl, p_time(ttl));
cp += INT32SZ;
ttl = ns_get32((u_char*)cp);
fprintf(file,"\n\tretry = %lu (%s)", ttl, p_time(ttl));
cp += INT32SZ;
ttl = ns_get32((u_char*)cp);
fprintf(file,"\n\texpire = %lu (%s)", ttl, p_time(ttl));
cp += INT32SZ;
ttl = ns_get32((u_char*)cp);
fprintf(file,
"\n\tminimum ttl = %lu (%s)\n", ttl, p_time(ttl));
cp += INT32SZ;
break;
case T_MINFO:
if (!debug)
putc('\n', file);
fprintf(file,"\trequests = ");
cp = Print_cdname(cp, msg, eom, file);
if (cp == NULL) {
fprintf(file, "(name truncated?)\n");
return (NULL); /* compression error */
}
fprintf(file,"\n\terrors = ");
cp = Print_cdname(cp, msg, eom, file);
if (cp == NULL) {
fprintf(file, "(name truncated?)\n");
return (NULL); /* compression error */
}
(void) putc('\n', file);
break;
case T_RP:
if (!debug)
putc('\n', file);
fprintf(file,"\tmailbox = ");
cp = Print_cdname(cp, msg, eom, file);
if (cp == NULL) {
fprintf(file, "(name truncated?)\n");
return (NULL); /* compression error */
}
fprintf(file,"\n\ttext = ");
cp = Print_cdname(cp, msg, eom, file);
if (cp == NULL) {
fprintf(file, "(name truncated?)\n");
return (NULL); /* compression error */
}
(void) putc('\n', file);
break;
case T_TXT:
(void) fputs("\ttext = ", file);
cp2 = cp1 + dlen;
while (cp < cp2) {
(void) putc('"', file);
n = (unsigned char) *cp++;
if (n != 0) {
for (c = n; c > 0 && cp < cp2; c--) {
if ((*cp == '\n') || (*cp == '"') || (*cp == '\\'))
(void) putc('\\', file);
(void) putc(*cp++, file);
}
}
(void) putc('"', file);
if (cp < cp2)
(void) putc(' ', file);
}
(void) putc('\n', file);
break;
case T_X25:
(void) fputs("\tX25 = \"", file);
cp2 = cp1 + dlen;
while (cp < cp2) {
n = (unsigned char) *cp++;
if (n != 0) {
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:
fprintf(file, "\tnsap = %s\n", 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"];
BOUNDS_CHECK(cp, IN6ADDRSZ);
fprintf(file, "\tIPv6 address = %s\n",
inet_ntop(AF_INET6, cp, t, sizeof t));
cp += IN6ADDRSZ;
break;
}
case T_WKS: {
struct protoent *protoPtr;
BOUNDS_CHECK(cp, INADDRSZ + 1);
if (!debug)
(void) putc('\n', file);
memcpy(&inaddr, cp, INADDRSZ);
cp += INADDRSZ;
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;
case T_NXT:
case T_SIG:
case T_KEY:
default: {
char buf[2048]; /* XXX need to malloc/realloc. */
if (ns_sprintrrf(msg, eom - msg, "?", class, type, rrttl,
cp1, dlen, NULL, NULL, buf, sizeof buf) < 0) {
perror("ns_sprintrrf");
} else {
fprintf(file,
"\trecord type %s, interpreted as:\n%s\n",
p_type(type), buf);
}
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);
}
Reference in New Issue View Git Blame Copy Permalink