* POSSIBILITY OF SUCH DAMAGE.
*/
-#ifndef lint
-static const char rcsid[] =
- "@(#) $Header: /tcpdump/master/tcpdump/print-aodv.c,v 1.8 2003-09-13 01:34:42 guy Exp $ (LBL)";
-#endif
+/* \summary: Ad hoc On-Demand Distance Vector (AODV) Routing printer */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
-#include <tcpdump-stdinc.h>
-
-#include <stddef.h>
-#include <stdio.h>
-#include <ctype.h>
-#include <string.h>
+#include <netdissect-stdinc.h>
-#include "interface.h"
+#include "netdissect.h"
#include "addrtoname.h"
-#include "extract.h" /* must come after interface.h */
+#include "extract.h"
-#include "aodv.h"
+/*
+ * RFC 3561
+ */
+struct aodv_rreq {
+ uint8_t rreq_type; /* AODV message type (1) */
+ uint8_t rreq_flags; /* various flags */
+ uint8_t rreq_zero0; /* reserved, set to zero */
+ uint8_t rreq_hops; /* number of hops from originator */
+ uint32_t rreq_id; /* request ID */
+ uint32_t rreq_da; /* destination IPv4 address */
+ uint32_t rreq_ds; /* destination sequence number */
+ uint32_t rreq_oa; /* originator IPv4 address */
+ uint32_t rreq_os; /* originator sequence number */
+};
+struct aodv_rreq6 {
+ uint8_t rreq_type; /* AODV message type (1) */
+ uint8_t rreq_flags; /* various flags */
+ uint8_t rreq_zero0; /* reserved, set to zero */
+ uint8_t rreq_hops; /* number of hops from originator */
+ uint32_t rreq_id; /* request ID */
+ struct in6_addr rreq_da; /* destination IPv6 address */
+ uint32_t rreq_ds; /* destination sequence number */
+ struct in6_addr rreq_oa; /* originator IPv6 address */
+ uint32_t rreq_os; /* originator sequence number */
+};
+struct aodv_rreq6_draft_01 {
+ uint8_t rreq_type; /* AODV message type (16) */
+ uint8_t rreq_flags; /* various flags */
+ uint8_t rreq_zero0; /* reserved, set to zero */
+ uint8_t rreq_hops; /* number of hops from originator */
+ uint32_t rreq_id; /* request ID */
+ uint32_t rreq_ds; /* destination sequence number */
+ uint32_t rreq_os; /* originator sequence number */
+ struct in6_addr rreq_da; /* destination IPv6 address */
+ struct in6_addr rreq_oa; /* originator IPv6 address */
+};
+
+#define RREQ_JOIN 0x80 /* join (reserved for multicast */
+#define RREQ_REPAIR 0x40 /* repair (reserved for multicast */
+#define RREQ_GRAT 0x20 /* gratuitous RREP */
+#define RREQ_DEST 0x10 /* destination only */
+#define RREQ_UNKNOWN 0x08 /* unknown destination sequence num */
+#define RREQ_FLAGS_MASK 0xF8 /* mask for rreq_flags */
+
+struct aodv_rrep {
+ uint8_t rrep_type; /* AODV message type (2) */
+ uint8_t rrep_flags; /* various flags */
+ uint8_t rrep_ps; /* prefix size */
+ uint8_t rrep_hops; /* number of hops from o to d */
+ uint32_t rrep_da; /* destination IPv4 address */
+ uint32_t rrep_ds; /* destination sequence number */
+ uint32_t rrep_oa; /* originator IPv4 address */
+ uint32_t rrep_life; /* lifetime of this route */
+};
+struct aodv_rrep6 {
+ uint8_t rrep_type; /* AODV message type (2) */
+ uint8_t rrep_flags; /* various flags */
+ uint8_t rrep_ps; /* prefix size */
+ uint8_t rrep_hops; /* number of hops from o to d */
+ struct in6_addr rrep_da; /* destination IPv6 address */
+ uint32_t rrep_ds; /* destination sequence number */
+ struct in6_addr rrep_oa; /* originator IPv6 address */
+ uint32_t rrep_life; /* lifetime of this route */
+};
+struct aodv_rrep6_draft_01 {
+ uint8_t rrep_type; /* AODV message type (17) */
+ uint8_t rrep_flags; /* various flags */
+ uint8_t rrep_ps; /* prefix size */
+ uint8_t rrep_hops; /* number of hops from o to d */
+ uint32_t rrep_ds; /* destination sequence number */
+ struct in6_addr rrep_da; /* destination IPv6 address */
+ struct in6_addr rrep_oa; /* originator IPv6 address */
+ uint32_t rrep_life; /* lifetime of this route */
+};
+
+#define RREP_REPAIR 0x80 /* repair (reserved for multicast */
+#define RREP_ACK 0x40 /* acknowledgement required */
+#define RREP_FLAGS_MASK 0xC0 /* mask for rrep_flags */
+#define RREP_PREFIX_MASK 0x1F /* mask for prefix size */
+
+struct rerr_unreach {
+ uint32_t u_da; /* IPv4 address */
+ uint32_t u_ds; /* sequence number */
+};
+struct rerr_unreach6 {
+ struct in6_addr u_da; /* IPv6 address */
+ uint32_t u_ds; /* sequence number */
+};
+struct rerr_unreach6_draft_01 {
+ struct in6_addr u_da; /* IPv6 address */
+ uint32_t u_ds; /* sequence number */
+};
+
+struct aodv_rerr {
+ uint8_t rerr_type; /* AODV message type (3 or 18) */
+ uint8_t rerr_flags; /* various flags */
+ uint8_t rerr_zero0; /* reserved, set to zero */
+ uint8_t rerr_dc; /* destination count */
+};
+
+#define RERR_NODELETE 0x80 /* don't delete the link */
+#define RERR_FLAGS_MASK 0x80 /* mask for rerr_flags */
+
+struct aodv_rrep_ack {
+ uint8_t ra_type;
+ uint8_t ra_zero0;
+};
+
+#define AODV_RREQ 1 /* route request */
+#define AODV_RREP 2 /* route response */
+#define AODV_RERR 3 /* error report */
+#define AODV_RREP_ACK 4 /* route response acknowledgement */
+
+#define AODV_V6_DRAFT_01_RREQ 16 /* IPv6 route request */
+#define AODV_V6_DRAFT_01_RREP 17 /* IPv6 route response */
+#define AODV_V6_DRAFT_01_RERR 18 /* IPv6 error report */
+#define AODV_V6_DRAFT_01_RREP_ACK 19 /* IPV6 route response acknowledgment */
+
+struct aodv_ext {
+ uint8_t type; /* extension type */
+ uint8_t length; /* extension length */
+};
+
+struct aodv_hello {
+ struct aodv_ext eh; /* extension header */
+ uint8_t interval[4]; /* expect my next hello in
+ * (n) ms
+ * NOTE: this is not aligned */
+};
+
+#define AODV_EXT_HELLO 1
static void
-aodv_extension(const struct aodv_ext *ep, u_int length)
+aodv_extension(netdissect_options *ndo,
+ const struct aodv_ext *ep, u_int length)
{
- u_int i;
const struct aodv_hello *ah;
+ ND_TCHECK(*ep);
switch (ep->type) {
case AODV_EXT_HELLO:
- if (snapend < (u_char *) ep) {
- printf(" [|hello]");
- return;
- }
- i = min(length, (u_int)(snapend - (u_char *)ep));
- if (i < sizeof(struct aodv_hello)) {
- printf(" [|hello]");
- return;
+ ah = (const struct aodv_hello *)(const void *)ep;
+ ND_TCHECK(*ah);
+ if (length < sizeof(struct aodv_hello))
+ goto trunc;
+ if (ep->length < 4) {
+ ND_PRINT((ndo, "\n\text HELLO - bad length %u", ep->length));
+ break;
}
- i -= sizeof(struct aodv_hello);
- ah = (void *)ep;
- printf("\n\text HELLO %ld ms",
- (unsigned long)EXTRACT_32BITS(&ah->interval));
+ ND_PRINT((ndo, "\n\text HELLO %ld ms",
+ (unsigned long)EXTRACT_32BITS(&ah->interval)));
break;
default:
- printf("\n\text %u %u", ep->type, ep->length);
+ ND_PRINT((ndo, "\n\text %u %u", ep->type, ep->length));
break;
}
+ return;
+
+trunc:
+ ND_PRINT((ndo, " [|hello]"));
}
static void
-aodv_rreq(const union aodv *ap, const u_char *dat, u_int length)
+aodv_rreq(netdissect_options *ndo, const u_char *dat, u_int length)
{
u_int i;
+ const struct aodv_rreq *ap = (const struct aodv_rreq *)dat;
- if (snapend < dat) {
- printf(" [|aodv]");
- return;
- }
- i = min(length, (u_int)(snapend - dat));
- if (i < sizeof(ap->rreq)) {
- printf(" [|rreq]");
- return;
- }
- i -= sizeof(ap->rreq);
- printf(" rreq %u %s%s%s%s%shops %u id 0x%08lx\n"
+ ND_TCHECK(*ap);
+ if (length < sizeof(*ap))
+ goto trunc;
+ ND_PRINT((ndo, " rreq %u %s%s%s%s%shops %u id 0x%08lx\n"
"\tdst %s seq %lu src %s seq %lu", length,
- ap->rreq.rreq_type & RREQ_JOIN ? "[J]" : "",
- ap->rreq.rreq_type & RREQ_REPAIR ? "[R]" : "",
- ap->rreq.rreq_type & RREQ_GRAT ? "[G]" : "",
- ap->rreq.rreq_type & RREQ_DEST ? "[D]" : "",
- ap->rreq.rreq_type & RREQ_UNKNOWN ? "[U] " : " ",
- ap->rreq.rreq_hops,
- (unsigned long)EXTRACT_32BITS(&ap->rreq.rreq_id),
- ipaddr_string(&ap->rreq.rreq_da),
- (unsigned long)EXTRACT_32BITS(&ap->rreq.rreq_ds),
- ipaddr_string(&ap->rreq.rreq_oa),
- (unsigned long)EXTRACT_32BITS(&ap->rreq.rreq_os));
+ ap->rreq_type & RREQ_JOIN ? "[J]" : "",
+ ap->rreq_type & RREQ_REPAIR ? "[R]" : "",
+ ap->rreq_type & RREQ_GRAT ? "[G]" : "",
+ ap->rreq_type & RREQ_DEST ? "[D]" : "",
+ ap->rreq_type & RREQ_UNKNOWN ? "[U] " : " ",
+ ap->rreq_hops,
+ (unsigned long)EXTRACT_32BITS(&ap->rreq_id),
+ ipaddr_string(ndo, &ap->rreq_da),
+ (unsigned long)EXTRACT_32BITS(&ap->rreq_ds),
+ ipaddr_string(ndo, &ap->rreq_oa),
+ (unsigned long)EXTRACT_32BITS(&ap->rreq_os)));
+ i = length - sizeof(*ap);
if (i >= sizeof(struct aodv_ext))
- aodv_extension((void *)(&ap->rreq + 1), i);
+ aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
+ return;
+
+trunc:
+ ND_PRINT((ndo, " [|rreq"));
}
static void
-aodv_rrep(const union aodv *ap, const u_char *dat, u_int length)
+aodv_rrep(netdissect_options *ndo, const u_char *dat, u_int length)
{
u_int i;
+ const struct aodv_rrep *ap = (const struct aodv_rrep *)dat;
- if (snapend < dat) {
- printf(" [|aodv]");
- return;
- }
- i = min(length, (u_int)(snapend - dat));
- if (i < sizeof(ap->rrep)) {
- printf(" [|rrep]");
- return;
- }
- i -= sizeof(ap->rrep);
- printf(" rrep %u %s%sprefix %u hops %u\n"
+ ND_TCHECK(*ap);
+ if (length < sizeof(*ap))
+ goto trunc;
+ ND_PRINT((ndo, " rrep %u %s%sprefix %u hops %u\n"
"\tdst %s dseq %lu src %s %lu ms", length,
- ap->rrep.rrep_type & RREP_REPAIR ? "[R]" : "",
- ap->rrep.rrep_type & RREP_ACK ? "[A] " : " ",
- ap->rrep.rrep_ps & RREP_PREFIX_MASK,
- ap->rrep.rrep_hops,
- ipaddr_string(&ap->rrep.rrep_da),
- (unsigned long)EXTRACT_32BITS(&ap->rrep.rrep_ds),
- ipaddr_string(&ap->rrep.rrep_oa),
- (unsigned long)EXTRACT_32BITS(&ap->rrep.rrep_life));
+ ap->rrep_type & RREP_REPAIR ? "[R]" : "",
+ ap->rrep_type & RREP_ACK ? "[A] " : " ",
+ ap->rrep_ps & RREP_PREFIX_MASK,
+ ap->rrep_hops,
+ ipaddr_string(ndo, &ap->rrep_da),
+ (unsigned long)EXTRACT_32BITS(&ap->rrep_ds),
+ ipaddr_string(ndo, &ap->rrep_oa),
+ (unsigned long)EXTRACT_32BITS(&ap->rrep_life)));
+ i = length - sizeof(*ap);
if (i >= sizeof(struct aodv_ext))
- aodv_extension((void *)(&ap->rrep + 1), i);
+ aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
+ return;
+
+trunc:
+ ND_PRINT((ndo, " [|rreq"));
}
static void
-aodv_rerr(const union aodv *ap, u_int length)
+aodv_rerr(netdissect_options *ndo, const u_char *dat, u_int length)
{
- const struct rerr_unreach *dp = NULL;
- int i, j, n, trunc;
-
- i = length - offsetof(struct aodv_rerr, r);
- j = sizeof(ap->rerr.r.dest[0]);
- dp = &ap->rerr.r.dest[0];
- n = ap->rerr.rerr_dc * j;
- printf(" rerr %s [items %u] [%u]:",
- ap->rerr.rerr_flags & RERR_NODELETE ? "[D]" : "",
- ap->rerr.rerr_dc, length);
- trunc = n - (i/j);
- for (; i -= j >= 0; ++dp) {
- printf(" {%s}(%ld)", ipaddr_string(&dp->u_da),
- (unsigned long)EXTRACT_32BITS(&dp->u_ds));
+ u_int i, dc;
+ const struct aodv_rerr *ap = (const struct aodv_rerr *)dat;
+ const struct rerr_unreach *dp;
+
+ ND_TCHECK(*ap);
+ if (length < sizeof(*ap))
+ goto trunc;
+ ND_PRINT((ndo, " rerr %s [items %u] [%u]:",
+ ap->rerr_flags & RERR_NODELETE ? "[D]" : "",
+ ap->rerr_dc, length));
+ dp = (const struct rerr_unreach *)(dat + sizeof(*ap));
+ i = length - sizeof(*ap);
+ for (dc = ap->rerr_dc; dc != 0; dc--) {
+ ND_TCHECK(*dp);
+ if (i < sizeof(*dp))
+ goto trunc;
+ ND_PRINT((ndo, " {%s}(%ld)", ipaddr_string(ndo, &dp->u_da),
+ (unsigned long)EXTRACT_32BITS(&dp->u_ds)));
+ dp++;
+ i -= sizeof(*dp);
}
- if (trunc)
- printf("[|rerr]");
+ return;
+
+trunc:
+ ND_PRINT((ndo, "[|rerr]"));
}
static void
-#ifdef INET6
-aodv_v6_rreq(const union aodv *ap, const u_char *dat, u_int length)
-#else
-aodv_v6_rreq(const union aodv *ap _U_, const u_char *dat _U_, u_int length)
-#endif
+aodv_v6_rreq(netdissect_options *ndo, const u_char *dat, u_int length)
{
-#ifdef INET6
u_int i;
+ const struct aodv_rreq6 *ap = (const struct aodv_rreq6 *)dat;
- if (snapend < dat) {
- printf(" [|aodv]");
- return;
- }
- i = min(length, (u_int)(snapend - dat));
- if (i < sizeof(ap->rreq6)) {
- printf(" [|rreq6]");
- return;
- }
- i -= sizeof(ap->rreq6);
- printf(" v6 rreq %u %s%s%s%s%shops %u id 0x%08lx\n"
+ ND_TCHECK(*ap);
+ if (length < sizeof(*ap))
+ goto trunc;
+ ND_PRINT((ndo, " v6 rreq %u %s%s%s%s%shops %u id 0x%08lx\n"
"\tdst %s seq %lu src %s seq %lu", length,
- ap->rreq6.rreq_type & RREQ_JOIN ? "[J]" : "",
- ap->rreq6.rreq_type & RREQ_REPAIR ? "[R]" : "",
- ap->rreq6.rreq_type & RREQ_GRAT ? "[G]" : "",
- ap->rreq6.rreq_type & RREQ_DEST ? "[D]" : "",
- ap->rreq6.rreq_type & RREQ_UNKNOWN ? "[U] " : " ",
- ap->rreq6.rreq_hops,
- (unsigned long)EXTRACT_32BITS(&ap->rreq6.rreq_id),
- ip6addr_string(&ap->rreq6.rreq_da),
- (unsigned long)EXTRACT_32BITS(&ap->rreq6.rreq_ds),
- ip6addr_string(&ap->rreq6.rreq_oa),
- (unsigned long)EXTRACT_32BITS(&ap->rreq6.rreq_os));
+ ap->rreq_type & RREQ_JOIN ? "[J]" : "",
+ ap->rreq_type & RREQ_REPAIR ? "[R]" : "",
+ ap->rreq_type & RREQ_GRAT ? "[G]" : "",
+ ap->rreq_type & RREQ_DEST ? "[D]" : "",
+ ap->rreq_type & RREQ_UNKNOWN ? "[U] " : " ",
+ ap->rreq_hops,
+ (unsigned long)EXTRACT_32BITS(&ap->rreq_id),
+ ip6addr_string(ndo, &ap->rreq_da),
+ (unsigned long)EXTRACT_32BITS(&ap->rreq_ds),
+ ip6addr_string(ndo, &ap->rreq_oa),
+ (unsigned long)EXTRACT_32BITS(&ap->rreq_os)));
+ i = length - sizeof(*ap);
if (i >= sizeof(struct aodv_ext))
- aodv_extension((void *)(&ap->rreq6 + 1), i);
-#else
- printf(" v6 rreq %u", length);
-#endif
+ aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
+ return;
+
+trunc:
+ ND_PRINT((ndo, " [|rreq"));
}
static void
-#ifdef INET6
-aodv_v6_rrep(const union aodv *ap, const u_char *dat, u_int length)
-#else
-aodv_v6_rrep(const union aodv *ap _U_, const u_char *dat _U_, u_int length)
-#endif
+aodv_v6_rrep(netdissect_options *ndo, const u_char *dat, u_int length)
{
-#ifdef INET6
u_int i;
+ const struct aodv_rrep6 *ap = (const struct aodv_rrep6 *)dat;
- if (snapend < dat) {
- printf(" [|aodv]");
- return;
- }
- i = min(length, (u_int)(snapend - dat));
- if (i < sizeof(ap->rrep6)) {
- printf(" [|rrep6]");
- return;
- }
- i -= sizeof(ap->rrep6);
- printf(" rrep %u %s%sprefix %u hops %u\n"
+ ND_TCHECK(*ap);
+ if (length < sizeof(*ap))
+ goto trunc;
+ ND_PRINT((ndo, " rrep %u %s%sprefix %u hops %u\n"
"\tdst %s dseq %lu src %s %lu ms", length,
- ap->rrep6.rrep_type & RREP_REPAIR ? "[R]" : "",
- ap->rrep6.rrep_type & RREP_ACK ? "[A] " : " ",
- ap->rrep6.rrep_ps & RREP_PREFIX_MASK,
- ap->rrep6.rrep_hops,
- ip6addr_string(&ap->rrep6.rrep_da),
- (unsigned long)EXTRACT_32BITS(&ap->rrep6.rrep_ds),
- ip6addr_string(&ap->rrep6.rrep_oa),
- (unsigned long)EXTRACT_32BITS(&ap->rrep6.rrep_life));
+ ap->rrep_type & RREP_REPAIR ? "[R]" : "",
+ ap->rrep_type & RREP_ACK ? "[A] " : " ",
+ ap->rrep_ps & RREP_PREFIX_MASK,
+ ap->rrep_hops,
+ ip6addr_string(ndo, &ap->rrep_da),
+ (unsigned long)EXTRACT_32BITS(&ap->rrep_ds),
+ ip6addr_string(ndo, &ap->rrep_oa),
+ (unsigned long)EXTRACT_32BITS(&ap->rrep_life)));
+ i = length - sizeof(*ap);
if (i >= sizeof(struct aodv_ext))
- aodv_extension((void *)(&ap->rrep6 + 1), i);
-#else
- printf(" rrep %u", length);
-#endif
+ aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
+ return;
+
+trunc:
+ ND_PRINT((ndo, " [|rreq"));
}
static void
-#ifdef INET6
-aodv_v6_rerr(const union aodv *ap, u_int length)
-#else
-aodv_v6_rerr(const union aodv *ap _U_, u_int length)
-#endif
+aodv_v6_rerr(netdissect_options *ndo, const u_char *dat, u_int length)
{
-#ifdef INET6
- const struct rerr_unreach6 *dp6 = NULL;
- int i, j, n, trunc;
-
- i = length - offsetof(struct aodv_rerr, r);
- j = sizeof(ap->rerr.r.dest6[0]);
- dp6 = &ap->rerr.r.dest6[0];
- n = ap->rerr.rerr_dc * j;
- printf(" rerr %s [items %u] [%u]:",
- ap->rerr.rerr_flags & RERR_NODELETE ? "[D]" : "",
- ap->rerr.rerr_dc, length);
- trunc = n - (i/j);
- for (; i -= j >= 0; ++dp6) {
- printf(" {%s}(%ld)", ip6addr_string(&dp6->u_da),
- (unsigned long)EXTRACT_32BITS(&dp6->u_ds));
+ u_int i, dc;
+ const struct aodv_rerr *ap = (const struct aodv_rerr *)dat;
+ const struct rerr_unreach6 *dp6;
+
+ ND_TCHECK(*ap);
+ if (length < sizeof(*ap))
+ goto trunc;
+ ND_PRINT((ndo, " rerr %s [items %u] [%u]:",
+ ap->rerr_flags & RERR_NODELETE ? "[D]" : "",
+ ap->rerr_dc, length));
+ dp6 = (const struct rerr_unreach6 *)(const void *)(ap + 1);
+ i = length - sizeof(*ap);
+ for (dc = ap->rerr_dc; dc != 0; dc--) {
+ ND_TCHECK(*dp6);
+ if (i < sizeof(*dp6))
+ goto trunc;
+ ND_PRINT((ndo, " {%s}(%ld)", ip6addr_string(ndo, &dp6->u_da),
+ (unsigned long)EXTRACT_32BITS(&dp6->u_ds)));
+ dp6++;
+ i -= sizeof(*dp6);
}
- if (trunc)
- printf("[|rerr]");
-#else
- printf(" rerr %u", length);
-#endif
+ return;
+
+trunc:
+ ND_PRINT((ndo, "[|rerr]"));
}
static void
-#ifdef INET6
-aodv_v6_draft_01_rreq(const union aodv *ap, const u_char *dat, u_int length)
-#else
-aodv_v6_draft_01_rreq(const union aodv *ap _U_, const u_char *dat _U_,
- u_int length)
-#endif
+aodv_v6_draft_01_rreq(netdissect_options *ndo, const u_char *dat, u_int length)
{
-#ifdef INET6
u_int i;
+ const struct aodv_rreq6_draft_01 *ap = (const struct aodv_rreq6_draft_01 *)dat;
- if (snapend < dat) {
- printf(" [|aodv]");
- return;
- }
- i = min(length, (u_int)(snapend - dat));
- if (i < sizeof(ap->rreq6_draft_01)) {
- printf(" [|rreq6]");
- return;
- }
- i -= sizeof(ap->rreq6_draft_01);
- printf(" rreq %u %s%s%s%s%shops %u id 0x%08lx\n"
+ ND_TCHECK(*ap);
+ if (length < sizeof(*ap))
+ goto trunc;
+ ND_PRINT((ndo, " rreq %u %s%s%s%s%shops %u id 0x%08lx\n"
"\tdst %s seq %lu src %s seq %lu", length,
- ap->rreq6_draft_01.rreq_type & RREQ_JOIN ? "[J]" : "",
- ap->rreq6_draft_01.rreq_type & RREQ_REPAIR ? "[R]" : "",
- ap->rreq6_draft_01.rreq_type & RREQ_GRAT ? "[G]" : "",
- ap->rreq6_draft_01.rreq_type & RREQ_DEST ? "[D]" : "",
- ap->rreq6_draft_01.rreq_type & RREQ_UNKNOWN ? "[U] " : " ",
- ap->rreq6_draft_01.rreq_hops,
- (unsigned long)EXTRACT_32BITS(&ap->rreq6_draft_01.rreq_id),
- ip6addr_string(&ap->rreq6_draft_01.rreq_da),
- (unsigned long)EXTRACT_32BITS(&ap->rreq6_draft_01.rreq_ds),
- ip6addr_string(&ap->rreq6_draft_01.rreq_oa),
- (unsigned long)EXTRACT_32BITS(&ap->rreq6_draft_01.rreq_os));
+ ap->rreq_type & RREQ_JOIN ? "[J]" : "",
+ ap->rreq_type & RREQ_REPAIR ? "[R]" : "",
+ ap->rreq_type & RREQ_GRAT ? "[G]" : "",
+ ap->rreq_type & RREQ_DEST ? "[D]" : "",
+ ap->rreq_type & RREQ_UNKNOWN ? "[U] " : " ",
+ ap->rreq_hops,
+ (unsigned long)EXTRACT_32BITS(&ap->rreq_id),
+ ip6addr_string(ndo, &ap->rreq_da),
+ (unsigned long)EXTRACT_32BITS(&ap->rreq_ds),
+ ip6addr_string(ndo, &ap->rreq_oa),
+ (unsigned long)EXTRACT_32BITS(&ap->rreq_os)));
+ i = length - sizeof(*ap);
if (i >= sizeof(struct aodv_ext))
- aodv_extension((void *)(&ap->rreq6_draft_01 + 1), i);
-#else
- printf(" rreq %u", length);
-#endif
+ aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
+ return;
+
+trunc:
+ ND_PRINT((ndo, " [|rreq"));
}
static void
-#ifdef INET6
-aodv_v6_draft_01_rrep(const union aodv *ap, const u_char *dat, u_int length)
-#else
-aodv_v6_draft_01_rrep(const union aodv *ap _U_, const u_char *dat _U_,
- u_int length)
-#endif
+aodv_v6_draft_01_rrep(netdissect_options *ndo, const u_char *dat, u_int length)
{
-#ifdef INET6
u_int i;
+ const struct aodv_rrep6_draft_01 *ap = (const struct aodv_rrep6_draft_01 *)dat;
- if (snapend < dat) {
- printf(" [|aodv]");
- return;
- }
- i = min(length, (u_int)(snapend - dat));
- if (i < sizeof(ap->rrep6_draft_01)) {
- printf(" [|rrep6]");
- return;
- }
- i -= sizeof(ap->rrep6_draft_01);
- printf(" rrep %u %s%sprefix %u hops %u\n"
+ ND_TCHECK(*ap);
+ if (length < sizeof(*ap))
+ goto trunc;
+ ND_PRINT((ndo, " rrep %u %s%sprefix %u hops %u\n"
"\tdst %s dseq %lu src %s %lu ms", length,
- ap->rrep6_draft_01.rrep_type & RREP_REPAIR ? "[R]" : "",
- ap->rrep6_draft_01.rrep_type & RREP_ACK ? "[A] " : " ",
- ap->rrep6_draft_01.rrep_ps & RREP_PREFIX_MASK,
- ap->rrep6_draft_01.rrep_hops,
- ip6addr_string(&ap->rrep6_draft_01.rrep_da),
- (unsigned long)EXTRACT_32BITS(&ap->rrep6_draft_01.rrep_ds),
- ip6addr_string(&ap->rrep6_draft_01.rrep_oa),
- (unsigned long)EXTRACT_32BITS(&ap->rrep6_draft_01.rrep_life));
+ ap->rrep_type & RREP_REPAIR ? "[R]" : "",
+ ap->rrep_type & RREP_ACK ? "[A] " : " ",
+ ap->rrep_ps & RREP_PREFIX_MASK,
+ ap->rrep_hops,
+ ip6addr_string(ndo, &ap->rrep_da),
+ (unsigned long)EXTRACT_32BITS(&ap->rrep_ds),
+ ip6addr_string(ndo, &ap->rrep_oa),
+ (unsigned long)EXTRACT_32BITS(&ap->rrep_life)));
+ i = length - sizeof(*ap);
if (i >= sizeof(struct aodv_ext))
- aodv_extension((void *)(&ap->rrep6_draft_01 + 1), i);
-#else
- printf(" rrep %u", length);
-#endif
+ aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
+ return;
+
+trunc:
+ ND_PRINT((ndo, " [|rreq"));
}
static void
-#ifdef INET6
-aodv_v6_draft_01_rerr(const union aodv *ap, u_int length)
-#else
-aodv_v6_draft_01_rerr(const union aodv *ap _U_, u_int length)
-#endif
+aodv_v6_draft_01_rerr(netdissect_options *ndo, const u_char *dat, u_int length)
{
-#ifdef INET6
- const struct rerr_unreach6_draft_01 *dp6 = NULL;
- int i, j, n, trunc;
-
- i = length - offsetof(struct aodv_rerr, r);
- j = sizeof(ap->rerr.r.dest6_draft_01[0]);
- dp6 = &ap->rerr.r.dest6_draft_01[0];
- n = ap->rerr.rerr_dc * j;
- printf(" rerr %s [items %u] [%u]:",
- ap->rerr.rerr_flags & RERR_NODELETE ? "[D]" : "",
- ap->rerr.rerr_dc, length);
- trunc = n - (i/j);
- for (; i -= j >= 0; ++dp6) {
- printf(" {%s}(%ld)", ip6addr_string(&dp6->u_da),
- (unsigned long)EXTRACT_32BITS(&dp6->u_ds));
+ u_int i, dc;
+ const struct aodv_rerr *ap = (const struct aodv_rerr *)dat;
+ const struct rerr_unreach6_draft_01 *dp6;
+
+ ND_TCHECK(*ap);
+ if (length < sizeof(*ap))
+ goto trunc;
+ ND_PRINT((ndo, " rerr %s [items %u] [%u]:",
+ ap->rerr_flags & RERR_NODELETE ? "[D]" : "",
+ ap->rerr_dc, length));
+ dp6 = (const struct rerr_unreach6_draft_01 *)(const void *)(ap + 1);
+ i = length - sizeof(*ap);
+ for (dc = ap->rerr_dc; dc != 0; dc--) {
+ ND_TCHECK(*dp6);
+ if (i < sizeof(*dp6))
+ goto trunc;
+ ND_PRINT((ndo, " {%s}(%ld)", ip6addr_string(ndo, &dp6->u_da),
+ (unsigned long)EXTRACT_32BITS(&dp6->u_ds)));
+ dp6++;
+ i -= sizeof(*dp6);
}
- if (trunc)
- printf("[|rerr]");
-#else
- printf(" rerr %u", length);
-#endif
+ return;
+
+trunc:
+ ND_PRINT((ndo, "[|rerr]"));
}
void
-aodv_print(const u_char *dat, u_int length, int is_ip6)
+aodv_print(netdissect_options *ndo,
+ const u_char *dat, u_int length, int is_ip6)
{
- const union aodv *ap;
+ uint8_t msg_type;
- ap = (union aodv *)dat;
- if (snapend < dat) {
- printf(" [|aodv]");
- return;
- }
- if (min(length, (u_int)(snapend - dat)) < sizeof(ap->rrep_ack)) {
- printf(" [|aodv]");
- return;
- }
- printf(" aodv");
+ /*
+ * The message type is the first byte; make sure we have it
+ * and then fetch it.
+ */
+ ND_TCHECK(*dat);
+ msg_type = *dat;
+ ND_PRINT((ndo, " aodv"));
- switch (ap->rerr.rerr_type) {
+ switch (msg_type) {
case AODV_RREQ:
if (is_ip6)
- aodv_v6_rreq(ap, dat, length);
+ aodv_v6_rreq(ndo, dat, length);
else
- aodv_rreq(ap, dat, length);
+ aodv_rreq(ndo, dat, length);
break;
case AODV_RREP:
if (is_ip6)
- aodv_v6_rrep(ap, dat, length);
+ aodv_v6_rrep(ndo, dat, length);
else
- aodv_rrep(ap, dat, length);
+ aodv_rrep(ndo, dat, length);
break;
case AODV_RERR:
if (is_ip6)
- aodv_v6_rerr(ap, length);
+ aodv_v6_rerr(ndo, dat, length);
else
- aodv_rerr(ap, length);
+ aodv_rerr(ndo, dat, length);
break;
case AODV_RREP_ACK:
- printf(" rrep-ack %u", length);
+ ND_PRINT((ndo, " rrep-ack %u", length));
break;
case AODV_V6_DRAFT_01_RREQ:
- aodv_v6_draft_01_rreq(ap, dat, length);
+ aodv_v6_draft_01_rreq(ndo, dat, length);
break;
case AODV_V6_DRAFT_01_RREP:
- aodv_v6_draft_01_rrep(ap, dat, length);
+ aodv_v6_draft_01_rrep(ndo, dat, length);
break;
case AODV_V6_DRAFT_01_RERR:
- aodv_v6_draft_01_rerr(ap, length);
+ aodv_v6_draft_01_rerr(ndo, dat, length);
break;
case AODV_V6_DRAFT_01_RREP_ACK:
- printf(" rrep-ack %u", length);
+ ND_PRINT((ndo, " rrep-ack %u", length));
break;
default:
- printf(" %u %u", ap->rreq.rreq_type, length);
+ ND_PRINT((ndo, " type %u %u", msg_type, length));
}
+ return;
+
+trunc:
+ ND_PRINT((ndo, " [|aodv]"));
}
projects / tcpdump / blobdiff