*/
#ifndef lint
-static const char rcsid[] =
- "@(#) $Header: /tcpdump/master/tcpdump/print-lwres.c,v 1.1 2001-01-29 09:18:50 itojun Exp $ (LBL)";
+static const char rcsid[] _U_ =
+ "@(#) $Header: /tcpdump/master/tcpdump/print-lwres.c,v 1.13 2004-03-24 01:54:29 guy Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
-#include <sys/param.h>
-#include <sys/time.h>
+#include <tcpdump-stdinc.h>
-#include <netinet/in.h>
-
-#ifdef NOERROR
-#undef NOERROR /* Solaris sucks */
-#endif
-#ifdef NOERROR
-#undef T_UNSPEC /* SINIX does too */
-#endif
#include "nameser.h"
#include <stdio.h>
lwres_uint16_t authlength;
};
+#define LWRES_LWPACKETFLAG_RESPONSE 0x0001U /* if set, pkt is a response */
+
+#define LWRES_LWPACKETVERSION_0 0
+
#define LWRES_FLAG_TRUSTNOTREQUIRED 0x00000001U
#define LWRES_FLAG_SECUREDATA 0x00000002U
typedef struct {
/* public */
lwres_uint16_t datalength;
- unsigned char *data;
+ /* data follows */
} lwres_nooprequest_t;
typedef struct {
/* public */
lwres_uint16_t datalength;
- unsigned char *data;
+ /* data follows */
} lwres_noopresponse_t;
/*
*/
#define LWRES_OPCODE_GETADDRSBYNAME 0x00010001U
+typedef struct lwres_addr lwres_addr_t;
+
+struct lwres_addr {
+ lwres_uint32_t family;
+ lwres_uint16_t length;
+ /* address folows */
+};
+
typedef struct {
/* public */
lwres_uint32_t flags;
lwres_uint32_t flags;
lwres_uint16_t naliases;
lwres_uint16_t naddrs;
- char *realname;
- char **aliases;
lwres_uint16_t realnamelen;
- lwres_uint16_t *aliaslen;
-#if 0
- lwres_addrlist_t addrs;
- /* if base != NULL, it will be freed when this structure is freed. */
- void *base;
- size_t baselen;
-#endif
+ /* aliases follows */
+ /* addrs follows */
+ /* realname follows */
} lwres_gabnresponse_t;
/*
typedef struct {
/* public */
lwres_uint32_t flags;
-#if 0
lwres_addr_t addr;
-#endif
+ /* addr body follows */
} lwres_gnbarequest_t;
typedef struct {
/* public */
lwres_uint32_t flags;
lwres_uint16_t naliases;
-#if 0
- char *realname;
- char **aliases;
lwres_uint16_t realnamelen;
- lwres_uint16_t *aliaslen;
- /* if base != NULL, it will be freed when this structure is freed. */
- void *base;
- size_t baselen;
-#endif
+ /* aliases follows */
+ /* realname follows */
} lwres_gnbaresponse_t;
/*
lwres_uint16_t rdclass;
lwres_uint16_t rdtype;
lwres_uint16_t namelen;
-#if 0
- char *name;
-#endif
+ /* name follows */
} lwres_grbnrequest_t;
typedef struct {
lwres_uint32_t ttl;
lwres_uint16_t nrdatas;
lwres_uint16_t nsigs;
-#if 0
- char *realname;
- lwres_uint16_t realnamelen;
- unsigned char **rdatas;
- lwres_uint16_t *rdatalen;
- unsigned char **sigs;
- lwres_uint16_t *siglen;
- /* if base != NULL, it will be freed when this structure is freed. */
- void *base;
- size_t baselen;
-#endif
+ /* realname here (len + name) */
+ /* rdata here (len + name) */
+ /* signatures here (len + name) */
} lwres_grbnresponse_t;
#define LWRDATA_VALIDATED 0x00000001
#define LWRES_MAX_ALIASES 16 /* max # of aliases */
#define LWRES_MAX_ADDRS 64 /* max # of addrs */
-struct vstr {
- u_int32_t v;
- const char *s;
-};
-
-struct vstr opcode[] = {
+struct tok opcode[] = {
{ LWRES_OPCODE_NOOP, "noop", },
{ LWRES_OPCODE_GETADDRSBYNAME, "getaddrsbyname", },
{ LWRES_OPCODE_GETNAMEBYADDR, "getnamebyaddr", },
{ 0, NULL, },
};
-static const char *vtostr(struct vstr *, u_int32_t, const char *);
+/* print-domain.c */
+extern struct tok ns_type2str[];
+extern struct tok ns_class2str[];
-static const char *
-vtostr(p, v, lastresort)
- struct vstr *p;
- u_int32_t v;
- const char *lastresort;
+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 *);
+
+static int
+lwres_printname(size_t l, const char *p0)
+{
+ const char *p;
+ size_t i;
+
+ p = p0;
+ /* + 1 for terminating \0 */
+ if (p + l + 1 > (const char *)snapend)
+ goto trunc;
+
+ printf(" ");
+ for (i = 0; i < l; i++)
+ safeputchar(*p++);
+ p++; /* skip terminating \0 */
+
+ return p - p0;
+
+ trunc:
+ return -1;
+}
+
+static int
+lwres_printnamelen(const char *p)
{
+ u_int16_t l;
+ int advance;
+
+ if (p + 2 > (const char *)snapend)
+ goto trunc;
+ l = EXTRACT_16BITS(p);
+ advance = lwres_printname(l, p + 2);
+ if (advance < 0)
+ goto trunc;
+ return 2 + advance;
+
+ trunc:
+ return -1;
+}
+
+static int
+lwres_printbinlen(const char *p0)
+{
+ const char *p;
+ u_int16_t l;
+ int i;
+
+ p = p0;
+ if (p + 2 > (const char *)snapend)
+ goto trunc;
+ l = EXTRACT_16BITS(p);
+ if (p + 2 + l > (const char *)snapend)
+ goto trunc;
+ p += 2;
+ for (i = 0; i < l; i++)
+ printf("%02x", *p++);
+ return p - p0;
- while (p->s) {
- if (v == p->v)
- return p->s;
- p++;
+ trunc:
+ return -1;
+}
+
+static int
+lwres_printaddr(lwres_addr_t *ap)
+{
+ u_int16_t l;
+ const char *p;
+ int i;
+
+ TCHECK(ap->length);
+ l = EXTRACT_16BITS(&ap->length);
+ /* XXX ap points to packed struct */
+ p = (const char *)&ap->length + sizeof(ap->length);
+ TCHECK2(*p, l);
+
+ switch (EXTRACT_32BITS(&ap->family)) {
+ case 1: /* IPv4 */
+ if (l < 4)
+ return -1;
+ printf(" %s", ipaddr_string(p));
+ p += sizeof(struct in_addr);
+ break;
+#ifdef INET6
+ case 2: /* IPv6 */
+ if (l < 16)
+ return -1;
+ printf(" %s", ip6addr_string(p));
+ p += sizeof(struct in6_addr);
+ break;
+#endif
+ default:
+ printf(" %u/", EXTRACT_32BITS(&ap->family));
+ for (i = 0; i < l; i++)
+ printf("%02x", *p++);
}
- return lastresort;
+ return p - (const char *)ap;
+
+ trunc:
+ return -1;
}
void
const struct lwres_lwpacket *np;
u_int32_t v;
const char *s;
-#if 0
- u_int32_t l;
- lwres_gabnrequest_t *gabn;
- int i;
-#endif
+ int response;
+ int advance;
+ int unsupported = 0;
np = (const struct lwres_lwpacket *)bp;
TCHECK(np->authlength);
printf(" lwres");
- if (vflag)
- printf(" v%u", ntohs(np->version));
-
- /* opcode */
- v = (u_int32_t)ntohl(np->opcode);
- s = vtostr(opcode, v, NULL);
- if (s) {
- printf(" %s", s);
- if (vflag)
- printf("(0x%x)", v);
- } else
- printf(" 0x%x", v);
-
- /* flag bit */
- v = ntohs(np->pktflags);
- if (v) {
- printf("[%s%s]",
- (v & LWRES_FLAG_TRUSTNOTREQUIRED) ? "t" : "",
- (v & LWRES_FLAG_SECUREDATA) ? "S" : "");
+ v = EXTRACT_16BITS(&np->version);
+ if (vflag || v != LWRES_LWPACKETVERSION_0)
+ printf(" v%u", v);
+ if (v != LWRES_LWPACKETVERSION_0) {
+ s = (const char *)np + EXTRACT_32BITS(&np->length);
+ goto tail;
}
+ response = EXTRACT_16BITS(&np->pktflags) & LWRES_LWPACKETFLAG_RESPONSE;
+
+ /* opcode and pktflags */
+ v = EXTRACT_32BITS(&np->opcode);
+ s = tok2str(opcode, "#0x%x", v);
+ printf(" %s%s", s, response ? "" : "?");
+
+ /* pktflags */
+ v = EXTRACT_16BITS(&np->pktflags);
+ if (v & ~LWRES_LWPACKETFLAG_RESPONSE)
+ printf("[0x%x]", v);
+
if (vflag > 1) {
printf(" ("); /*)*/
- printf("serial:0x%x", (unsigned int)ntohl(np->serial));
- printf(" result:0x%x", (unsigned int)ntohl(np->result));
- printf(" recvlen:%u", (unsigned int)ntohl(np->recvlength));
- printf(" authtype:0x%x", ntohs(np->authtype));
- printf(" authlen:%u", ntohs(np->authlength));
+ printf("serial:0x%x", EXTRACT_32BITS(&np->serial));
+ printf(" result:0x%x", EXTRACT_32BITS(&np->result));
+ printf(" recvlen:%u", EXTRACT_32BITS(&np->recvlength));
+ /* BIND910: not used */
+ if (vflag > 2) {
+ printf(" authtype:0x%x", EXTRACT_16BITS(&np->authtype));
+ printf(" authlen:%u", EXTRACT_16BITS(&np->authlength));
+ }
/*(*/
printf(")");
}
-#if 0 /*not completed yet*/
/* per-opcode content */
- switch (ntohl(np->opcode)) {
- case LWRES_OPCODE_NOOP:
- break;
- case LWRES_OPCODE_GETADDRSBYNAME:
- gabn = (lwres_gabnrequest_t *)(np + 1);
- TCHECK(gabn->namelen);
- /* XXX gabn points to packed struct */
- s = (const char *)&gabn->namelen + sizeof(gabn->namelen);
- l = ntohs(gabn->namelen);
- if (s + l > (const char *)snapend)
- goto trunc;
-
- printf(" flags:0x%x", (unsigned int)ntohl(gabn->flags));
- v = (u_int32_t)ntohl(gabn->addrtypes);
- switch (v & (LWRES_ADDRTYPE_V4 | LWRES_ADDRTYPE_V6)) {
- case LWRES_ADDRTYPE_V4:
- printf(" IPv4");
+ if (!response) {
+ /*
+ * queries
+ */
+ lwres_gabnrequest_t *gabn;
+ lwres_gnbarequest_t *gnba;
+ lwres_grbnrequest_t *grbn;
+ u_int32_t l;
+
+ gabn = NULL;
+ gnba = NULL;
+ grbn = NULL;
+
+ switch (EXTRACT_32BITS(&np->opcode)) {
+ case LWRES_OPCODE_NOOP:
+ break;
+ case LWRES_OPCODE_GETADDRSBYNAME:
+ gabn = (lwres_gabnrequest_t *)(np + 1);
+ TCHECK(gabn->namelen);
+ /* XXX gabn points to packed struct */
+ s = (const char *)&gabn->namelen +
+ sizeof(gabn->namelen);
+ l = EXTRACT_16BITS(&gabn->namelen);
+
+ /* BIND910: not used */
+ if (vflag > 2) {
+ printf(" flags:0x%x",
+ EXTRACT_32BITS(&gabn->flags));
+ }
+
+ v = EXTRACT_32BITS(&gabn->addrtypes);
+ switch (v & (LWRES_ADDRTYPE_V4 | LWRES_ADDRTYPE_V6)) {
+ case LWRES_ADDRTYPE_V4:
+ printf(" IPv4");
+ break;
+ case LWRES_ADDRTYPE_V6:
+ printf(" IPv6");
+ break;
+ case LWRES_ADDRTYPE_V4 | LWRES_ADDRTYPE_V6:
+ printf(" IPv4/6");
+ break;
+ }
+ if (v & ~(LWRES_ADDRTYPE_V4 | LWRES_ADDRTYPE_V6))
+ printf("[0x%x]", v);
+
+ advance = lwres_printname(l, s);
+ if (advance < 0)
+ goto trunc;
+ s += advance;
break;
- case LWRES_ADDRTYPE_V6:
- printf(" IPv6");
+ case LWRES_OPCODE_GETNAMEBYADDR:
+ gnba = (lwres_gnbarequest_t *)(np + 1);
+ TCHECK(gnba->addr);
+
+ /* BIND910: not used */
+ if (vflag > 2) {
+ printf(" flags:0x%x",
+ EXTRACT_32BITS(&gnba->flags));
+ }
+
+ s = (const char *)&gnba->addr;
+
+ advance = lwres_printaddr(&gnba->addr);
+ if (advance < 0)
+ goto trunc;
+ s += advance;
break;
- case LWRES_ADDRTYPE_V4 | LWRES_ADDRTYPE_V6:
- printf(" IPv4/6");
+ case LWRES_OPCODE_GETRDATABYNAME:
+ /* XXX no trace, not tested */
+ grbn = (lwres_grbnrequest_t *)(np + 1);
+ TCHECK(grbn->namelen);
+
+ /* BIND910: not used */
+ if (vflag > 2) {
+ printf(" flags:0x%x",
+ EXTRACT_32BITS(&grbn->flags));
+ }
+
+ printf(" %s", tok2str(ns_type2str, "Type%d",
+ EXTRACT_16BITS(&grbn->rdtype)));
+ if (EXTRACT_16BITS(&grbn->rdclass) != C_IN) {
+ printf(" %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 = EXTRACT_16BITS(&grbn->namelen);
+
+ advance = lwres_printname(l, s);
+ if (advance < 0)
+ goto trunc;
+ s += advance;
+ break;
+ default:
+ unsupported++;
+ break;
+ }
+ } else {
+ /*
+ * responses
+ */
+ lwres_gabnresponse_t *gabn;
+ lwres_gnbaresponse_t *gnba;
+ lwres_grbnresponse_t *grbn;
+ u_int32_t l, na;
+ u_int32_t i;
+
+ gabn = NULL;
+ gnba = NULL;
+ grbn = NULL;
+
+ switch (EXTRACT_32BITS(&np->opcode)) {
+ case LWRES_OPCODE_NOOP:
+ break;
+ case LWRES_OPCODE_GETADDRSBYNAME:
+ gabn = (lwres_gabnresponse_t *)(np + 1);
+ TCHECK(gabn->realnamelen);
+ /* XXX gabn points to packed struct */
+ s = (const char *)&gabn->realnamelen +
+ sizeof(gabn->realnamelen);
+ l = EXTRACT_16BITS(&gabn->realnamelen);
+
+ /* BIND910: not used */
+ if (vflag > 2) {
+ printf(" flags:0x%x",
+ EXTRACT_32BITS(&gabn->flags));
+ }
+
+ printf(" %u/%u", EXTRACT_16BITS(&gabn->naliases),
+ EXTRACT_16BITS(&gabn->naddrs));
+
+ advance = lwres_printname(l, s);
+ if (advance < 0)
+ goto trunc;
+ s += advance;
+
+ /* aliases */
+ na = EXTRACT_16BITS(&gabn->naliases);
+ for (i = 0; i < na; i++) {
+ advance = lwres_printnamelen(s);
+ if (advance < 0)
+ goto trunc;
+ s += advance;
+ }
+
+ /* addrs */
+ na = EXTRACT_16BITS(&gabn->naddrs);
+ for (i = 0; i < na; i++) {
+ advance = lwres_printaddr((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);
+ /* XXX gnba points to packed struct */
+ s = (const char *)&gnba->realnamelen +
+ sizeof(gnba->realnamelen);
+ l = EXTRACT_16BITS(&gnba->realnamelen);
+
+ /* BIND910: not used */
+ if (vflag > 2) {
+ printf(" flags:0x%x",
+ EXTRACT_32BITS(&gnba->flags));
+ }
+
+ printf(" %u", EXTRACT_16BITS(&gnba->naliases));
+
+ advance = lwres_printname(l, s);
+ if (advance < 0)
+ goto trunc;
+ s += advance;
+
+ /* aliases */
+ na = EXTRACT_16BITS(&gnba->naliases);
+ for (i = 0; i < na; i++) {
+ advance = lwres_printnamelen(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);
+
+ /* BIND910: not used */
+ if (vflag > 2) {
+ printf(" flags:0x%x",
+ EXTRACT_32BITS(&grbn->flags));
+ }
+
+ printf(" %s", tok2str(ns_type2str, "Type%d",
+ EXTRACT_16BITS(&grbn->rdtype)));
+ if (EXTRACT_16BITS(&grbn->rdclass) != C_IN) {
+ printf(" %s", tok2str(ns_class2str, "Class%d",
+ EXTRACT_16BITS(&grbn->rdclass)));
+ }
+ printf(" TTL ");
+ relts_print(EXTRACT_32BITS(&grbn->ttl));
+ printf(" %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);
+ if (advance < 0)
+ goto trunc;
+ s += advance;
+
+ /* rdatas */
+ na = EXTRACT_16BITS(&grbn->nrdatas);
+ for (i = 0; i < na; i++) {
+ /* XXX should decode resource data */
+ advance = lwres_printbinlen(s);
+ if (advance < 0)
+ goto trunc;
+ s += advance;
+ }
+
+ /* sigs */
+ na = EXTRACT_16BITS(&grbn->nsigs);
+ for (i = 0; i < na; i++) {
+ /* XXX how should we print it? */
+ advance = lwres_printbinlen(s);
+ if (advance < 0)
+ goto trunc;
+ s += advance;
+ }
+ break;
+ default:
+ unsupported++;
break;
}
- if (v & ~(LWRES_ADDRTYPE_V4 | LWRES_ADDRTYPE_V6))
- printf("[0x%x]", v);
- printf(" ");
- for (i = 0; i < l; i++)
- safeputchar(s[i]);
- break;
- case LWRES_OPCODE_GETNAMEBYADDR:
- break;
- case LWRES_OPCODE_GETRDATABYNAME:
- break;
- default:
- break;
}
-#endif
+ tail:
/* length mismatch */
- if (ntohl(np->length) != length)
- printf(" [len: %u != %u]", (unsigned int)ntohl(np->length), length);
+ if (EXTRACT_32BITS(&np->length) != length) {
+ printf(" [len: %u != %u]", EXTRACT_32BITS(&np->length),
+ length);
+ }
+ if (!unsupported && s < (const char *)np + EXTRACT_32BITS(&np->length))
+ printf("[extra]");
return;
trunc:
projects / tcpdump / blobdiff