* SUCH DAMAGE.
*/
-#ifndef lint
-static const char rcsid[] =
- "@(#) $Header: /tcpdump/master/tcpdump/print-lwres.c,v 1.4 2001-02-09 05:16:48 guy Exp $ (LBL)";
-#endif
+/* \summary: BIND9 Lightweight Resolver protocol printer */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
-#include <sys/param.h>
-#include <sys/time.h>
-
-#include <netinet/in.h>
+#include <netdissect-stdinc.h>
-#ifdef NOERROR
-#undef NOERROR /* Solaris sucks */
-#endif
-#ifdef NOERROR
-#undef T_UNSPEC /* SINIX does too */
-#endif
#include "nameser.h"
#include <stdio.h>
#include <string.h>
-#include "interface.h"
+#include "netdissect.h"
#include "addrtoname.h"
-#include "extract.h" /* must come after interface.h */
+#include "extract.h"
/* BIND9 lib/lwres/include/lwres */
-typedef u_int32_t lwres_uint32_t;
-typedef u_int16_t lwres_uint16_t;
-typedef u_int8_t lwres_uint8_t;
+typedef uint32_t lwres_uint32_t;
+typedef uint16_t lwres_uint16_t;
+typedef uint8_t lwres_uint8_t;
struct lwres_lwpacket {
lwres_uint32_t length;
#define LWRES_MAX_ALIASES 16 /* max # of aliases */
#define LWRES_MAX_ADDRS 64 /* max # of addrs */
-struct tok opcode[] = {
+static const struct tok opcode[] = {
{ LWRES_OPCODE_NOOP, "noop", },
{ LWRES_OPCODE_GETADDRSBYNAME, "getaddrsbyname", },
{ LWRES_OPCODE_GETNAMEBYADDR, "getnamebyaddr", },
};
/* print-domain.c */
-extern struct tok ns_type2str[];
-extern struct tok ns_class2str[];
-
-static int lwres_printname(size_t, const char *);
-static int lwres_printnamelen(const char *);
-static int lwres_printbinlen(const char *);
-static int lwres_printaddr(lwres_addr_t *);
+extern const struct tok ns_type2str[];
+extern const struct tok ns_class2str[];
static int
-lwres_printname(size_t l, const char *p0)
+lwres_printname(netdissect_options *ndo,
+ size_t l, const char *p0)
{
const char *p;
- int i;
+ size_t i;
p = p0;
/* + 1 for terminating \0 */
- if (p + l + 1 > (const char *)snapend)
+ if (p + l + 1 > (const char *)ndo->ndo_snapend)
goto trunc;
- printf(" ");
+ ND_PRINT((ndo, " "));
for (i = 0; i < l; i++)
- safeputchar(*p++);
+ safeputchar(ndo, *p++);
p++; /* skip terminating \0 */
return p - p0;
}
static int
-lwres_printnamelen(const char *p)
+lwres_printnamelen(netdissect_options *ndo,
+ const char *p)
{
- u_int16_t l;
+ uint16_t l;
int advance;
- if (p + 2 > (const char *)snapend)
+ if (p + 2 > (const char *)ndo->ndo_snapend)
goto trunc;
l = EXTRACT_16BITS(p);
- advance = lwres_printname(l, p + 2);
+ advance = lwres_printname(ndo, l, p + 2);
if (advance < 0)
goto trunc;
return 2 + advance;
}
static int
-lwres_printbinlen(const char *p0)
+lwres_printbinlen(netdissect_options *ndo,
+ const char *p0)
{
const char *p;
- u_int16_t l;
+ uint16_t l;
int i;
p = p0;
- if (p + 2 > (const char *)snapend)
+ if (p + 2 > (const char *)ndo->ndo_snapend)
goto trunc;
l = EXTRACT_16BITS(p);
- if (p + 2 + l > (const char *)snapend)
+ if (p + 2 + l > (const char *)ndo->ndo_snapend)
goto trunc;
p += 2;
for (i = 0; i < l; i++)
- printf("%02x", *p++);
+ ND_PRINT((ndo, "%02x", *p++));
return p - p0;
trunc:
}
static int
-lwres_printaddr(lwres_addr_t *ap)
+lwres_printaddr(netdissect_options *ndo,
+ const lwres_addr_t *ap)
{
- u_int16_t l;
+ uint16_t l;
const char *p;
int i;
- TCHECK(ap->length);
- l = ntohs(ap->length);
+ ND_TCHECK(ap->length);
+ l = EXTRACT_16BITS(&ap->length);
/* XXX ap points to packed struct */
p = (const char *)&ap->length + sizeof(ap->length);
- if (p + l > (const char *)snapend)
- goto trunc;
+ ND_TCHECK2(*p, l);
- switch (ntohl(ap->family)) {
+ switch (EXTRACT_32BITS(&ap->family)) {
case 1: /* IPv4 */
- printf(" %s", ipaddr_string(p));
+ if (l < 4)
+ return -1;
+ ND_PRINT((ndo, " %s", ipaddr_string(ndo, p)));
p += sizeof(struct in_addr);
break;
-#ifdef INET6
case 2: /* IPv6 */
- printf(" %s", ip6addr_string(p));
+ if (l < 16)
+ return -1;
+ ND_PRINT((ndo, " %s", ip6addr_string(ndo, p)));
p += sizeof(struct in6_addr);
break;
-#endif
default:
- printf(" %lu/", (unsigned long)ntohl(ap->family));
+ ND_PRINT((ndo, " %u/", EXTRACT_32BITS(&ap->family)));
for (i = 0; i < l; i++)
- printf("%02x", *p++);
+ ND_PRINT((ndo, "%02x", *p++));
}
return p - (const char *)ap;
}
void
-lwres_print(register const u_char *bp, u_int length)
+lwres_print(netdissect_options *ndo,
+ register const u_char *bp, u_int length)
{
const struct lwres_lwpacket *np;
- u_int32_t v;
+ uint32_t v;
const char *s;
int response;
int advance;
int unsupported = 0;
np = (const struct lwres_lwpacket *)bp;
- TCHECK(np->authlength);
+ ND_TCHECK(np->authlength);
- printf(" lwres");
- v = ntohs(np->version);
- if (vflag || v != LWRES_LWPACKETVERSION_0)
- printf(" v%u", v);
+ ND_PRINT((ndo, " lwres"));
+ v = EXTRACT_16BITS(&np->version);
+ if (ndo->ndo_vflag || v != LWRES_LWPACKETVERSION_0)
+ ND_PRINT((ndo, " v%u", v));
if (v != LWRES_LWPACKETVERSION_0) {
- s = (const char *)np + ntohl(np->length);
+ s = (const char *)np + EXTRACT_32BITS(&np->length);
goto tail;
}
- response = ntohs(np->pktflags) & LWRES_LWPACKETFLAG_RESPONSE;
+ response = EXTRACT_16BITS(&np->pktflags) & LWRES_LWPACKETFLAG_RESPONSE;
/* opcode and pktflags */
- v = (u_int32_t)ntohl(np->opcode);
+ v = EXTRACT_32BITS(&np->opcode);
s = tok2str(opcode, "#0x%x", v);
- printf(" %s%s", s, response ? "" : "?");
+ ND_PRINT((ndo, " %s%s", s, response ? "" : "?"));
/* pktflags */
- v = ntohs(np->pktflags);
+ v = EXTRACT_16BITS(&np->pktflags);
if (v & ~LWRES_LWPACKETFLAG_RESPONSE)
- printf("[0x%x]", v);
+ ND_PRINT((ndo, "[0x%x]", v));
- if (vflag > 1) {
- printf(" ("); /*)*/
- printf("serial:0x%lx", (unsigned long)ntohl(np->serial));
- printf(" result:0x%lx", (unsigned long)ntohl(np->result));
- printf(" recvlen:%lu", (unsigned long)ntohl(np->recvlength));
+ if (ndo->ndo_vflag > 1) {
+ ND_PRINT((ndo, " (")); /*)*/
+ ND_PRINT((ndo, "serial:0x%x", EXTRACT_32BITS(&np->serial)));
+ ND_PRINT((ndo, " result:0x%x", EXTRACT_32BITS(&np->result)));
+ ND_PRINT((ndo, " recvlen:%u", EXTRACT_32BITS(&np->recvlength)));
/* BIND910: not used */
- if (vflag > 2) {
- printf(" authtype:0x%x", ntohs(np->authtype));
- printf(" authlen:%u", ntohs(np->authlength));
+ if (ndo->ndo_vflag > 2) {
+ ND_PRINT((ndo, " authtype:0x%x", EXTRACT_16BITS(&np->authtype)));
+ ND_PRINT((ndo, " authlen:%u", EXTRACT_16BITS(&np->authlength)));
}
/*(*/
- printf(")");
+ ND_PRINT((ndo, ")"));
}
/* per-opcode content */
/*
* queries
*/
- lwres_gabnrequest_t *gabn;
- lwres_gnbarequest_t *gnba;
- lwres_grbnrequest_t *grbn;
- u_int32_t l;
+ const lwres_gabnrequest_t *gabn;
+ const lwres_gnbarequest_t *gnba;
+ const lwres_grbnrequest_t *grbn;
+ uint32_t l;
gabn = NULL;
gnba = NULL;
grbn = NULL;
- switch (ntohl(np->opcode)) {
+ switch (EXTRACT_32BITS(&np->opcode)) {
case LWRES_OPCODE_NOOP:
break;
case LWRES_OPCODE_GETADDRSBYNAME:
- gabn = (lwres_gabnrequest_t *)(np + 1);
- TCHECK(gabn->namelen);
+ gabn = (const lwres_gabnrequest_t *)(np + 1);
+ ND_TCHECK(gabn->namelen);
/* XXX gabn points to packed struct */
s = (const char *)&gabn->namelen +
sizeof(gabn->namelen);
- l = ntohs(gabn->namelen);
+ l = EXTRACT_16BITS(&gabn->namelen);
/* BIND910: not used */
- if (vflag > 2) {
- printf(" flags:0x%lx",
- (unsigned long)ntohl(gabn->flags));
+ if (ndo->ndo_vflag > 2) {
+ ND_PRINT((ndo, " flags:0x%x",
+ EXTRACT_32BITS(&gabn->flags)));
}
- v = (u_int32_t)ntohl(gabn->addrtypes);
+ v = EXTRACT_32BITS(&gabn->addrtypes);
switch (v & (LWRES_ADDRTYPE_V4 | LWRES_ADDRTYPE_V6)) {
case LWRES_ADDRTYPE_V4:
- printf(" IPv4");
+ ND_PRINT((ndo, " IPv4"));
break;
case LWRES_ADDRTYPE_V6:
- printf(" IPv6");
+ ND_PRINT((ndo, " IPv6"));
break;
case LWRES_ADDRTYPE_V4 | LWRES_ADDRTYPE_V6:
- printf(" IPv4/6");
+ ND_PRINT((ndo, " IPv4/6"));
break;
}
if (v & ~(LWRES_ADDRTYPE_V4 | LWRES_ADDRTYPE_V6))
- printf("[0x%x]", v);
+ ND_PRINT((ndo, "[0x%x]", v));
- advance = lwres_printname(l, s);
+ advance = lwres_printname(ndo, l, s);
if (advance < 0)
goto trunc;
s += advance;
break;
case LWRES_OPCODE_GETNAMEBYADDR:
- gnba = (lwres_gnbarequest_t *)(np + 1);
- TCHECK(gnba->addr);
+ gnba = (const lwres_gnbarequest_t *)(np + 1);
+ ND_TCHECK(gnba->addr);
/* BIND910: not used */
- if (vflag > 2) {
- printf(" flags:0x%lx",
- (unsigned long)ntohl(gnba->flags));
+ if (ndo->ndo_vflag > 2) {
+ ND_PRINT((ndo, " flags:0x%x",
+ EXTRACT_32BITS(&gnba->flags)));
}
s = (const char *)&gnba->addr;
- advance = lwres_printaddr(&gnba->addr);
+ advance = lwres_printaddr(ndo, &gnba->addr);
if (advance < 0)
goto trunc;
s += advance;
break;
case LWRES_OPCODE_GETRDATABYNAME:
/* XXX no trace, not tested */
- grbn = (lwres_grbnrequest_t *)(np + 1);
- TCHECK(grbn->namelen);
+ grbn = (const lwres_grbnrequest_t *)(np + 1);
+ ND_TCHECK(grbn->namelen);
/* BIND910: not used */
- if (vflag > 2) {
- printf(" flags:0x%lx",
- (unsigned long)ntohl(grbn->flags));
+ if (ndo->ndo_vflag > 2) {
+ ND_PRINT((ndo, " flags:0x%x",
+ EXTRACT_32BITS(&grbn->flags)));
}
- printf(" %s", tok2str(ns_type2str, "Type%d",
- ntohs(grbn->rdtype)));
- if (ntohs(grbn->rdclass) != C_IN);
- printf(" %s", tok2str(ns_class2str, "Class%d",
- ntohs(grbn->rdclass)));
+ ND_PRINT((ndo, " %s", tok2str(ns_type2str, "Type%d",
+ EXTRACT_16BITS(&grbn->rdtype))));
+ if (EXTRACT_16BITS(&grbn->rdclass) != C_IN) {
+ ND_PRINT((ndo, " %s", tok2str(ns_class2str, "Class%d",
+ EXTRACT_16BITS(&grbn->rdclass))));
+ }
/* XXX grbn points to packed struct */
s = (const char *)&grbn->namelen +
sizeof(grbn->namelen);
- l = ntohs(gabn->namelen);
+ l = EXTRACT_16BITS(&grbn->namelen);
- advance = lwres_printname(l, s);
+ advance = lwres_printname(ndo, l, s);
if (advance < 0)
goto trunc;
s += advance;
/*
* responses
*/
- lwres_gabnresponse_t *gabn;
- lwres_gnbaresponse_t *gnba;
- lwres_grbnresponse_t *grbn;
- u_int32_t l, na;
- int i;
+ const lwres_gabnresponse_t *gabn;
+ const lwres_gnbaresponse_t *gnba;
+ const lwres_grbnresponse_t *grbn;
+ uint32_t l, na;
+ uint32_t i;
gabn = NULL;
gnba = NULL;
grbn = NULL;
- switch (ntohl(np->opcode)) {
+ switch (EXTRACT_32BITS(&np->opcode)) {
case LWRES_OPCODE_NOOP:
break;
case LWRES_OPCODE_GETADDRSBYNAME:
- gabn = (lwres_gabnresponse_t *)(np + 1);
- TCHECK(gabn->realnamelen);
+ gabn = (const lwres_gabnresponse_t *)(np + 1);
+ ND_TCHECK(gabn->realnamelen);
/* XXX gabn points to packed struct */
s = (const char *)&gabn->realnamelen +
sizeof(gabn->realnamelen);
- l = ntohs(gabn->realnamelen);
+ l = EXTRACT_16BITS(&gabn->realnamelen);
/* BIND910: not used */
- if (vflag > 2) {
- printf(" flags:0x%lx",
- (unsigned long)ntohl(gabn->flags));
+ if (ndo->ndo_vflag > 2) {
+ ND_PRINT((ndo, " flags:0x%x",
+ EXTRACT_32BITS(&gabn->flags)));
}
- printf(" %u/%u", ntohs(gabn->naliases),
- ntohs(gabn->naddrs));
+ ND_PRINT((ndo, " %u/%u", EXTRACT_16BITS(&gabn->naliases),
+ EXTRACT_16BITS(&gabn->naddrs)));
- advance = lwres_printname(l, s);
+ advance = lwres_printname(ndo, l, s);
if (advance < 0)
goto trunc;
s += advance;
/* aliases */
- na = ntohs(gabn->naliases);
+ na = EXTRACT_16BITS(&gabn->naliases);
for (i = 0; i < na; i++) {
- advance = lwres_printnamelen(s);
+ advance = lwres_printnamelen(ndo, s);
if (advance < 0)
goto trunc;
s += advance;
}
/* addrs */
- na = ntohs(gabn->naddrs);
+ na = EXTRACT_16BITS(&gabn->naddrs);
for (i = 0; i < na; i++) {
- advance = lwres_printaddr((lwres_addr_t *)s);
+ advance = lwres_printaddr(ndo, (const lwres_addr_t *)s);
if (advance < 0)
goto trunc;
s += advance;
}
break;
case LWRES_OPCODE_GETNAMEBYADDR:
- gnba = (lwres_gnbaresponse_t *)(np + 1);
- TCHECK(gnba->realnamelen);
+ gnba = (const lwres_gnbaresponse_t *)(np + 1);
+ ND_TCHECK(gnba->realnamelen);
/* XXX gnba points to packed struct */
s = (const char *)&gnba->realnamelen +
sizeof(gnba->realnamelen);
- l = ntohs(gnba->realnamelen);
+ l = EXTRACT_16BITS(&gnba->realnamelen);
/* BIND910: not used */
- if (vflag > 2) {
- printf(" flags:0x%lx",
- (unsigned long)ntohl(gnba->flags));
+ if (ndo->ndo_vflag > 2) {
+ ND_PRINT((ndo, " flags:0x%x",
+ EXTRACT_32BITS(&gnba->flags)));
}
- printf(" %u", ntohs(gnba->naliases));
+ ND_PRINT((ndo, " %u", EXTRACT_16BITS(&gnba->naliases)));
- advance = lwres_printname(l, s);
+ advance = lwres_printname(ndo, l, s);
if (advance < 0)
goto trunc;
s += advance;
/* aliases */
- na = ntohs(gnba->naliases);
+ na = EXTRACT_16BITS(&gnba->naliases);
for (i = 0; i < na; i++) {
- advance = lwres_printnamelen(s);
+ advance = lwres_printnamelen(ndo, s);
if (advance < 0)
goto trunc;
s += advance;
break;
case LWRES_OPCODE_GETRDATABYNAME:
/* XXX no trace, not tested */
- grbn = (lwres_grbnresponse_t *)(np + 1);
- TCHECK(grbn->nsigs);
+ grbn = (const lwres_grbnresponse_t *)(np + 1);
+ ND_TCHECK(grbn->nsigs);
/* BIND910: not used */
- if (vflag > 2) {
- printf(" flags:0x%lx",
- (unsigned long)ntohl(grbn->flags));
+ if (ndo->ndo_vflag > 2) {
+ ND_PRINT((ndo, " flags:0x%x",
+ EXTRACT_32BITS(&grbn->flags)));
}
- printf(" %s", tok2str(ns_type2str, "Type%d",
- ntohs(grbn->rdtype)));
- if (ntohs(grbn->rdclass) != C_IN);
- printf(" %s", tok2str(ns_class2str, "Class%d",
- ntohs(grbn->rdclass)));
- printf(" TTL ");
- relts_print(ntohl(grbn->ttl));
- printf(" %u/%u", ntohs(grbn->nrdatas),
- ntohs(grbn->nsigs));
+ ND_PRINT((ndo, " %s", tok2str(ns_type2str, "Type%d",
+ EXTRACT_16BITS(&grbn->rdtype))));
+ if (EXTRACT_16BITS(&grbn->rdclass) != C_IN) {
+ ND_PRINT((ndo, " %s", tok2str(ns_class2str, "Class%d",
+ EXTRACT_16BITS(&grbn->rdclass))));
+ }
+ ND_PRINT((ndo, " TTL "));
+ unsigned_relts_print(ndo, EXTRACT_32BITS(&grbn->ttl));
+ ND_PRINT((ndo, " %u/%u", EXTRACT_16BITS(&grbn->nrdatas),
+ EXTRACT_16BITS(&grbn->nsigs)));
/* XXX grbn points to packed struct */
s = (const char *)&grbn->nsigs+ sizeof(grbn->nsigs);
- advance = lwres_printnamelen(s);
+ advance = lwres_printnamelen(ndo, s);
if (advance < 0)
goto trunc;
s += advance;
/* rdatas */
- na = ntohs(grbn->nrdatas);
+ na = EXTRACT_16BITS(&grbn->nrdatas);
for (i = 0; i < na; i++) {
/* XXX should decode resource data */
- advance = lwres_printbinlen(s);
+ advance = lwres_printbinlen(ndo, s);
if (advance < 0)
goto trunc;
s += advance;
}
/* sigs */
- na = ntohs(grbn->nsigs);
+ na = EXTRACT_16BITS(&grbn->nsigs);
for (i = 0; i < na; i++) {
/* XXX how should we print it? */
- advance = lwres_printbinlen(s);
+ advance = lwres_printbinlen(ndo, s);
if (advance < 0)
goto trunc;
s += advance;
tail:
/* length mismatch */
- if (ntohl(np->length) != length) {
- printf(" [len: %lu != %u]", (unsigned long)ntohl(np->length),
- length);
+ if (EXTRACT_32BITS(&np->length) != length) {
+ ND_PRINT((ndo, " [len: %u != %u]", EXTRACT_32BITS(&np->length),
+ length));
}
- if (!unsupported && s < (const char *)np + ntohl(np->length))
- printf("[extra]");
+ if (!unsupported && s < (const char *)np + EXTRACT_32BITS(&np->length))
+ ND_PRINT((ndo, "[extra]"));
return;
trunc:
- printf("[|lwres]");
- return;
+ ND_PRINT((ndo, "[|lwres]"));
}
projects / tcpdump / blobdiff