* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
-
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "addrtoname.h"
#include "extract.h" /* must come after interface.h */
-#ifndef lint
-static const char rcsid[] _U_ =
- "@(#) $Header: /tcpdump/master/tcpdump/print-domain.c,v 1.87 2003-11-15 00:39:19 guy Exp $ (LBL)";
-#endif
static const char *ns_ops[] = {
"", " inv_q", " stat", " op3", " notify", " update", " op6", " op7",
" op8", " updataA", " updateD", " updateDA",
blabel_print(const u_char *cp)
{
int bitlen, slen, b;
- int truncated = 0;
const u_char *bitp, *lim;
char tc;
if ((bitlen = *cp) == 0)
bitlen = 256;
slen = (bitlen + 3) / 4;
- if ((lim = cp + 1 + slen) > snapend) {
- truncated = 1;
- lim = snapend;
- }
+ lim = cp + 1 + slen;
/* print the bit string as a hex string */
printf("\\[x");
- for (bitp = cp + 1, b = bitlen; bitp < lim && b > 7; b -= 8, bitp++)
+ for (bitp = cp + 1, b = bitlen; bitp < lim && b > 7; b -= 8, bitp++) {
+ TCHECK(*bitp);
printf("%02x", *bitp);
- if (bitp == lim)
- printf("...");
- else if (b > 4) {
+ }
+ if (b > 4) {
+ TCHECK(*bitp);
tc = *bitp++;
printf("%02x", tc & (0xff << (8 - b)));
} else if (b > 0) {
+ TCHECK(*bitp);
tc = *bitp++;
printf("%1x", ((tc >> 4) & 0x0f) & (0x0f << (4 - b)));
}
printf("/%d]", bitlen);
-
- return(truncated ? NULL : lim);
+ return lim;
+trunc:
+ printf(".../%d]", bitlen);
+ return NULL;
}
static int
i = *cp;
if ((i & INDIR_MASK) == EDNS0_MASK) {
int bitlen, elt;
-
- if ((elt = (i & ~INDIR_MASK)) != EDNS0_ELT_BITLABEL)
+ if ((elt = (i & ~INDIR_MASK)) != EDNS0_ELT_BITLABEL) {
+ printf("<ELT %d>", elt);
return(-1);
+ }
if (!TTEST2(*(cp + 1), 1))
return(-1);
if ((bitlen = *(cp + 1)) == 0)
return(i);
}
-static const u_char *
+const u_char *
ns_nprint(register const u_char *cp, register const u_char *bp)
{
register u_int i, l;
}
/* http://www.iana.org/assignments/dns-parameters */
-struct tok ns_type2str[] = {
+const struct tok ns_type2str[] = {
{ T_A, "A" }, /* RFC 1035 */
{ T_NS, "NS" }, /* RFC 1035 */
{ T_MD, "MD" }, /* RFC 1035 */
{ T_SRV, "SRV" }, /* RFC 2782 */
{ T_ATMA, "ATMA" }, /* ATM Forum */
{ T_NAPTR, "NAPTR" }, /* RFC 2168, RFC 2915 */
+ { T_KX, "KX" }, /* RFC 2230 */
+ { T_CERT, "CERT" }, /* RFC 2538 */
{ T_A6, "A6" }, /* RFC 2874 */
{ T_DNAME, "DNAME" }, /* RFC 2672 */
+ { T_SINK, "SINK" },
{ T_OPT, "OPT" }, /* RFC 2671 */
+ { T_APL, "APL" }, /* RFC 3123 */
+ { T_DS, "DS" }, /* RFC 4034 */
+ { T_SSHFP, "SSHFP" }, /* RFC 4255 */
+ { T_IPSECKEY, "IPSECKEY" }, /* RFC 4025 */
+ { T_RRSIG, "RRSIG" }, /* RFC 4034 */
+ { T_NSEC, "NSEC" }, /* RFC 4034 */
+ { T_DNSKEY, "DNSKEY" }, /* RFC 4034 */
+ { T_SPF, "SPF" }, /* RFC-schlitt-spf-classic-02.txt */
{ T_UINFO, "UINFO" },
{ T_UID, "UID" },
{ T_GID, "GID" },
{ 0, NULL }
};
-struct tok ns_class2str[] = {
+const struct tok ns_class2str[] = {
{ C_IN, "IN" }, /* Not used */
{ C_CHAOS, "CHAOS" },
{ C_HS, "HS" },
ns_qprint(register const u_char *cp, register const u_char *bp, int is_mdns)
{
register const u_char *np = cp;
- register u_int i;
+ register u_int i, class;
cp = ns_nskip(cp);
if (cp == NULL || !TTEST2(*cp, 4))
return(NULL);
- /* print the qtype and qclass (if it's not IN) */
+ /* print the qtype */
i = EXTRACT_16BITS(cp);
cp += 2;
printf(" %s", tok2str(ns_type2str, "Type%d", i));
+ /* print the qclass (if it's not IN) */
i = EXTRACT_16BITS(cp);
cp += 2;
- if (is_mdns && i == (C_IN|C_CACHE_FLUSH))
- printf(" (Cache flush)");
- else if (i != C_IN)
- printf(" %s", tok2str(ns_class2str, "(Class %d)", i));
+ if (is_mdns)
+ class = (i & ~C_QU);
+ else
+ class = i;
+ if (class != C_IN)
+ printf(" %s", tok2str(ns_class2str, "(Class %d)", class));
+ if (is_mdns) {
+ if (i & C_QU)
+ printf(" (QU)");
+ else
+ printf(" (QM)");
+ }
fputs("? ", stdout);
cp = ns_nprint(np, bp);
static const u_char *
ns_rprint(register const u_char *cp, register const u_char *bp, int is_mdns)
{
- register u_int class;
+ register u_int i, class, opt_flags = 0;
register u_short typ, len;
register const u_char *rp;
if (cp == NULL || !TTEST2(*cp, 10))
return (snapend);
- /* print the type/qtype and class (if it's not IN) */
+ /* print the type/qtype */
typ = EXTRACT_16BITS(cp);
cp += 2;
- class = EXTRACT_16BITS(cp);
+ /* print the class (if it's not IN and the type isn't OPT) */
+ i = EXTRACT_16BITS(cp);
cp += 2;
- if (is_mdns && class == (C_IN|C_CACHE_FLUSH))
- printf(" (Cache flush)");
- else if (class != C_IN && typ != T_OPT)
+ if (is_mdns)
+ class = (i & ~C_CACHE_FLUSH);
+ else
+ class = i;
+ if (class != C_IN && typ != T_OPT)
printf(" %s", tok2str(ns_class2str, "(Class %d)", class));
+ if (is_mdns) {
+ if (i & C_CACHE_FLUSH)
+ printf(" (Cache flush)");
+ }
- /* ignore ttl */
- cp += 4;
+ if (typ == T_OPT) {
+ /* get opt flags */
+ cp += 2;
+ opt_flags = EXTRACT_16BITS(cp);
+ /* ignore rest of ttl field */
+ cp += 2;
+ } else if (vflag > 2) {
+ /* print ttl */
+ printf(" [");
+ relts_print(EXTRACT_32BITS(cp));
+ printf("]");
+ cp += 4;
+ } else {
+ /* ignore ttl */
+ cp += 4;
+ }
len = EXTRACT_16BITS(cp);
cp += 2;
case T_A:
if (!TTEST2(*cp, sizeof(struct in_addr)))
return(NULL);
- printf(" %s", ipaddr_string(cp));
+ printf(" %s", intoa(htonl(EXTRACT_32BITS(cp))));
break;
case T_NS:
#ifdef INET6
case T_AAAA:
+ {
+ struct in6_addr addr;
+ char ntop_buf[INET6_ADDRSTRLEN];
+
if (!TTEST2(*cp, sizeof(struct in6_addr)))
return(NULL);
- printf(" %s", ip6addr_string(cp));
+ memcpy(&addr, cp, sizeof(struct in6_addr));
+ printf(" %s",
+ inet_ntop(AF_INET6, &addr, ntop_buf, sizeof(ntop_buf)));
+
break;
+ }
case T_A6:
{
struct in6_addr a;
int pbit, pbyte;
+ char ntop_buf[INET6_ADDRSTRLEN];
if (!TTEST2(*cp, 1))
return(NULL);
return(NULL);
memset(&a, 0, sizeof(a));
memcpy(&a.s6_addr[pbyte], cp + 1, sizeof(a) - pbyte);
- printf(" %u %s", pbit, ip6addr_string(&a));
+ printf(" %u %s", pbit,
+ inet_ntop(AF_INET6, &a, ntop_buf, sizeof(ntop_buf)));
}
if (pbit > 0) {
putchar(' ');
case T_OPT:
printf(" UDPsize=%u", class);
+ if (opt_flags & 0x8000)
+ printf(" OK");
break;
case T_UNSPECA: /* One long string */
if (DNS_QR(np)) {
/* this is a response */
- printf(" %d%s%s%s%s%s%s",
+ printf("%d%s%s%s%s%s%s",
EXTRACT_16BITS(&np->id),
ns_ops[DNS_OPCODE(np)],
ns_resp[DNS_RCODE(np)],
}
else {
/* this is a request */
- printf(" %d%s%s%s", EXTRACT_16BITS(&np->id), ns_ops[DNS_OPCODE(np)],
+ printf("%d%s%s%s", EXTRACT_16BITS(&np->id), ns_ops[DNS_OPCODE(np)],
DNS_RD(np) ? "+" : "",
DNS_CD(np) ? "%" : "");
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