*/
/* \summary: Ad hoc On-Demand Distance Vector (AODV) Routing printer */
+/* specification: RFC 3561 */
#ifdef HAVE_CONFIG_H
#include <config.h>
#include "addrtoname.h"
#include "extract.h"
-/*
- * RFC 3561
- */
struct aodv_rreq {
nd_uint8_t rreq_type; /* AODV message type (1) */
nd_uint8_t rreq_flags; /* various flags */
nd_ipv6 rreq_oa; /* originator IPv6 address */
nd_uint32_t rreq_os; /* originator sequence number */
};
-struct aodv_rreq6_draft_01 {
- nd_uint8_t rreq_type; /* AODV message type (16) */
- nd_uint8_t rreq_flags; /* various flags */
- nd_uint8_t rreq_zero0; /* reserved, set to zero */
- nd_uint8_t rreq_hops; /* number of hops from originator */
- nd_uint32_t rreq_id; /* request ID */
- nd_uint32_t rreq_ds; /* destination sequence number */
- nd_uint32_t rreq_os; /* originator sequence number */
- nd_ipv6 rreq_da; /* destination IPv6 address */
- nd_ipv6 rreq_oa; /* originator IPv6 address */
-};
#define RREQ_JOIN 0x80 /* join (reserved for multicast */
#define RREQ_REPAIR 0x40 /* repair (reserved for multicast */
nd_ipv6 rrep_oa; /* originator IPv6 address */
nd_uint32_t rrep_life; /* lifetime of this route */
};
-struct aodv_rrep6_draft_01 {
- nd_uint8_t rrep_type; /* AODV message type (17) */
- nd_uint8_t rrep_flags; /* various flags */
- nd_uint8_t rrep_ps; /* prefix size */
- nd_uint8_t rrep_hops; /* number of hops from o to d */
- nd_uint32_t rrep_ds; /* destination sequence number */
- nd_ipv6 rrep_da; /* destination IPv6 address */
- nd_ipv6 rrep_oa; /* originator IPv6 address */
- nd_uint32_t rrep_life; /* lifetime of this route */
-};
#define RREP_REPAIR 0x80 /* repair (reserved for multicast */
#define RREP_ACK 0x40 /* acknowledgement required */
nd_ipv6 u_da; /* IPv6 address */
nd_uint32_t u_ds; /* sequence number */
};
-struct rerr_unreach6_draft_01 {
- nd_ipv6 u_da; /* IPv6 address */
- nd_uint32_t u_ds; /* sequence number */
-};
struct aodv_rerr {
nd_uint8_t rerr_type; /* AODV message type (3 or 18) */
#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 */
+static const struct tok msg_type_str[] = {
+ { AODV_RREQ, "rreq" },
+ { AODV_RREP, "rrep" },
+ { AODV_RERR, "rerr" },
+ { AODV_RREP_ACK, "rrep-ack" },
+ { 0, NULL }
+};
struct aodv_ext {
nd_uint8_t type; /* extension type */
const struct aodv_ext *ep, u_int length)
{
const struct aodv_hello *ah;
+ uint8_t ext_type, ext_length;
- ND_TCHECK_SIZE(ep);
- switch (EXTRACT_U_1(ep->type)) {
+ ext_type = GET_U_1(ep->type);
+ ext_length = GET_U_1(ep->length);
+ switch (ext_type) {
case AODV_EXT_HELLO:
ah = (const struct aodv_hello *)(const void *)ep;
- ND_TCHECK_SIZE(ah);
- if (length < sizeof(struct aodv_hello))
- goto trunc;
- if (EXTRACT_U_1(ep->length) < 4) {
- ND_PRINT("\n\text HELLO - bad length %u", EXTRACT_U_1(ep->length));
- break;
+ ND_ICHECKMSG_ZU("ext data length", length, <,
+ sizeof(struct aodv_hello));
+ if (ext_length < 4) {
+ ND_PRINT("\n\text HELLO - bad length %u", ext_length);
+ goto invalid;
}
ND_PRINT("\n\text HELLO %u ms",
- EXTRACT_BE_U_4(ah->interval));
+ GET_BE_U_4(ah->interval));
break;
default:
- ND_PRINT("\n\text %u %u", EXTRACT_U_1(ep->type), EXTRACT_U_1(ep->length));
+ ND_PRINT("\n\text %u %u", ext_type, ext_length);
break;
}
return;
-trunc:
- ND_PRINT(" [|hello]");
+invalid:
+ nd_print_invalid(ndo);
}
static void
u_int i;
const struct aodv_rreq *ap = (const struct aodv_rreq *)dat;
- ND_TCHECK_SIZE(ap);
- if (length < sizeof(*ap))
- goto trunc;
- ND_PRINT(" rreq %u %s%s%s%s%shops %u id 0x%08x\n"
+ ND_ICHECKMSG_ZU("message length", length, <, sizeof(*ap));
+ ND_PRINT(" %u %s%s%s%s%shops %u id 0x%08x\n"
"\tdst %s seq %u src %s seq %u", length,
- EXTRACT_U_1(ap->rreq_type) & RREQ_JOIN ? "[J]" : "",
- EXTRACT_U_1(ap->rreq_type) & RREQ_REPAIR ? "[R]" : "",
- EXTRACT_U_1(ap->rreq_type) & RREQ_GRAT ? "[G]" : "",
- EXTRACT_U_1(ap->rreq_type) & RREQ_DEST ? "[D]" : "",
- EXTRACT_U_1(ap->rreq_type) & RREQ_UNKNOWN ? "[U] " : " ",
- EXTRACT_U_1(ap->rreq_hops),
- EXTRACT_BE_U_4(ap->rreq_id),
- ipaddr_string(ndo, ap->rreq_da),
- EXTRACT_BE_U_4(ap->rreq_ds),
- ipaddr_string(ndo, ap->rreq_oa),
- EXTRACT_BE_U_4(ap->rreq_os));
+ GET_U_1(ap->rreq_type) & RREQ_JOIN ? "[J]" : "",
+ GET_U_1(ap->rreq_type) & RREQ_REPAIR ? "[R]" : "",
+ GET_U_1(ap->rreq_type) & RREQ_GRAT ? "[G]" : "",
+ GET_U_1(ap->rreq_type) & RREQ_DEST ? "[D]" : "",
+ GET_U_1(ap->rreq_type) & RREQ_UNKNOWN ? "[U] " : " ",
+ GET_U_1(ap->rreq_hops),
+ GET_BE_U_4(ap->rreq_id),
+ GET_IPADDR_STRING(ap->rreq_da),
+ GET_BE_U_4(ap->rreq_ds),
+ GET_IPADDR_STRING(ap->rreq_oa),
+ GET_BE_U_4(ap->rreq_os));
i = length - sizeof(*ap);
if (i >= sizeof(struct aodv_ext))
aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
return;
-trunc:
- ND_PRINT(" [|rreq");
+invalid:
+ nd_print_invalid(ndo);
}
static void
u_int i;
const struct aodv_rrep *ap = (const struct aodv_rrep *)dat;
- ND_TCHECK_SIZE(ap);
- if (length < sizeof(*ap))
- goto trunc;
- ND_PRINT(" rrep %u %s%sprefix %u hops %u\n"
+ ND_ICHECKMSG_ZU("message length", length, <, sizeof(*ap));
+ ND_PRINT(" %u %s%sprefix %u hops %u\n"
"\tdst %s dseq %u src %s %u ms", length,
- EXTRACT_U_1(ap->rrep_type) & RREP_REPAIR ? "[R]" : "",
- EXTRACT_U_1(ap->rrep_type) & RREP_ACK ? "[A] " : " ",
- EXTRACT_U_1(ap->rrep_ps) & RREP_PREFIX_MASK,
- EXTRACT_U_1(ap->rrep_hops),
- ipaddr_string(ndo, ap->rrep_da),
- EXTRACT_BE_U_4(ap->rrep_ds),
- ipaddr_string(ndo, ap->rrep_oa),
- EXTRACT_BE_U_4(ap->rrep_life));
+ GET_U_1(ap->rrep_type) & RREP_REPAIR ? "[R]" : "",
+ GET_U_1(ap->rrep_type) & RREP_ACK ? "[A] " : " ",
+ GET_U_1(ap->rrep_ps) & RREP_PREFIX_MASK,
+ GET_U_1(ap->rrep_hops),
+ GET_IPADDR_STRING(ap->rrep_da),
+ GET_BE_U_4(ap->rrep_ds),
+ GET_IPADDR_STRING(ap->rrep_oa),
+ GET_BE_U_4(ap->rrep_life));
i = length - sizeof(*ap);
if (i >= sizeof(struct aodv_ext))
aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
return;
-trunc:
- ND_PRINT(" [|rreq");
+invalid:
+ nd_print_invalid(ndo);
}
static void
const struct aodv_rerr *ap = (const struct aodv_rerr *)dat;
const struct rerr_unreach *dp;
- ND_TCHECK_SIZE(ap);
- if (length < sizeof(*ap))
- goto trunc;
- ND_PRINT(" rerr %s [items %u] [%u]:",
- EXTRACT_U_1(ap->rerr_flags) & RERR_NODELETE ? "[D]" : "",
- EXTRACT_U_1(ap->rerr_dc), length);
+ ND_ICHECKMSG_ZU("message length", length, <, sizeof(*ap));
+ ND_PRINT(" %s [items %u] [%u]:",
+ GET_U_1(ap->rerr_flags) & RERR_NODELETE ? "[D]" : "",
+ GET_U_1(ap->rerr_dc), length);
dp = (const struct rerr_unreach *)(dat + sizeof(*ap));
i = length - sizeof(*ap);
- for (dc = EXTRACT_U_1(ap->rerr_dc); dc != 0; dc--) {
- ND_TCHECK_SIZE(dp);
- if (i < sizeof(*dp))
- goto trunc;
- ND_PRINT(" {%s}(%u)", ipaddr_string(ndo, dp->u_da),
- EXTRACT_BE_U_4(dp->u_ds));
+ for (dc = GET_U_1(ap->rerr_dc); dc != 0; dc--) {
+ ND_ICHECKMSG_ZU("remaining length", i, <, sizeof(*dp));
+ ND_PRINT(" {%s}(%u)", GET_IPADDR_STRING(dp->u_da),
+ GET_BE_U_4(dp->u_ds));
dp++;
i -= sizeof(*dp);
}
return;
-trunc:
- ND_PRINT("[|rerr]");
+invalid:
+ nd_print_invalid(ndo);
}
static void
u_int i;
const struct aodv_rreq6 *ap = (const struct aodv_rreq6 *)dat;
- ND_TCHECK_SIZE(ap);
- if (length < sizeof(*ap))
- goto trunc;
- ND_PRINT(" v6 rreq %u %s%s%s%s%shops %u id 0x%08x\n"
+ ND_ICHECKMSG_ZU("message length", length, <, sizeof(*ap));
+ ND_PRINT(" %u %s%s%s%s%shops %u id 0x%08x\n"
"\tdst %s seq %u src %s seq %u", length,
- EXTRACT_U_1(ap->rreq_type) & RREQ_JOIN ? "[J]" : "",
- EXTRACT_U_1(ap->rreq_type) & RREQ_REPAIR ? "[R]" : "",
- EXTRACT_U_1(ap->rreq_type) & RREQ_GRAT ? "[G]" : "",
- EXTRACT_U_1(ap->rreq_type) & RREQ_DEST ? "[D]" : "",
- EXTRACT_U_1(ap->rreq_type) & RREQ_UNKNOWN ? "[U] " : " ",
- EXTRACT_U_1(ap->rreq_hops),
- EXTRACT_BE_U_4(ap->rreq_id),
- ip6addr_string(ndo, ap->rreq_da),
- EXTRACT_BE_U_4(ap->rreq_ds),
- ip6addr_string(ndo, ap->rreq_oa),
- EXTRACT_BE_U_4(ap->rreq_os));
+ GET_U_1(ap->rreq_type) & RREQ_JOIN ? "[J]" : "",
+ GET_U_1(ap->rreq_type) & RREQ_REPAIR ? "[R]" : "",
+ GET_U_1(ap->rreq_type) & RREQ_GRAT ? "[G]" : "",
+ GET_U_1(ap->rreq_type) & RREQ_DEST ? "[D]" : "",
+ GET_U_1(ap->rreq_type) & RREQ_UNKNOWN ? "[U] " : " ",
+ GET_U_1(ap->rreq_hops),
+ GET_BE_U_4(ap->rreq_id),
+ GET_IP6ADDR_STRING(ap->rreq_da),
+ GET_BE_U_4(ap->rreq_ds),
+ GET_IP6ADDR_STRING(ap->rreq_oa),
+ GET_BE_U_4(ap->rreq_os));
i = length - sizeof(*ap);
if (i >= sizeof(struct aodv_ext))
aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
return;
-trunc:
- ND_PRINT(" [|rreq");
+invalid:
+ nd_print_invalid(ndo);
}
static void
u_int i;
const struct aodv_rrep6 *ap = (const struct aodv_rrep6 *)dat;
- ND_TCHECK_SIZE(ap);
- if (length < sizeof(*ap))
- goto trunc;
- ND_PRINT(" rrep %u %s%sprefix %u hops %u\n"
+ ND_ICHECKMSG_ZU("message length", length, <, sizeof(*ap));
+ ND_PRINT(" %u %s%sprefix %u hops %u\n"
"\tdst %s dseq %u src %s %u ms", length,
- EXTRACT_U_1(ap->rrep_type) & RREP_REPAIR ? "[R]" : "",
- EXTRACT_U_1(ap->rrep_type) & RREP_ACK ? "[A] " : " ",
- EXTRACT_U_1(ap->rrep_ps) & RREP_PREFIX_MASK,
- EXTRACT_U_1(ap->rrep_hops),
- ip6addr_string(ndo, ap->rrep_da),
- EXTRACT_BE_U_4(ap->rrep_ds),
- ip6addr_string(ndo, ap->rrep_oa),
- EXTRACT_BE_U_4(ap->rrep_life));
+ GET_U_1(ap->rrep_type) & RREP_REPAIR ? "[R]" : "",
+ GET_U_1(ap->rrep_type) & RREP_ACK ? "[A] " : " ",
+ GET_U_1(ap->rrep_ps) & RREP_PREFIX_MASK,
+ GET_U_1(ap->rrep_hops),
+ GET_IP6ADDR_STRING(ap->rrep_da),
+ GET_BE_U_4(ap->rrep_ds),
+ GET_IP6ADDR_STRING(ap->rrep_oa),
+ GET_BE_U_4(ap->rrep_life));
i = length - sizeof(*ap);
if (i >= sizeof(struct aodv_ext))
aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
return;
-trunc:
- ND_PRINT(" [|rreq");
+invalid:
+ nd_print_invalid(ndo);
}
static void
const struct aodv_rerr *ap = (const struct aodv_rerr *)dat;
const struct rerr_unreach6 *dp6;
- ND_TCHECK_SIZE(ap);
- if (length < sizeof(*ap))
- goto trunc;
- ND_PRINT(" rerr %s [items %u] [%u]:",
- EXTRACT_U_1(ap->rerr_flags) & RERR_NODELETE ? "[D]" : "",
- EXTRACT_U_1(ap->rerr_dc), length);
+ ND_ICHECKMSG_ZU("message length", length, <, sizeof(*ap));
+ ND_PRINT(" %s [items %u] [%u]:",
+ GET_U_1(ap->rerr_flags) & RERR_NODELETE ? "[D]" : "",
+ GET_U_1(ap->rerr_dc), length);
dp6 = (const struct rerr_unreach6 *)(const void *)(ap + 1);
i = length - sizeof(*ap);
- for (dc = EXTRACT_U_1(ap->rerr_dc); dc != 0; dc--) {
- ND_TCHECK_SIZE(dp6);
- if (i < sizeof(*dp6))
- goto trunc;
- ND_PRINT(" {%s}(%u)", ip6addr_string(ndo, dp6->u_da),
- EXTRACT_BE_U_4(dp6->u_ds));
+ for (dc = GET_U_1(ap->rerr_dc); dc != 0; dc--) {
+ ND_ICHECKMSG_ZU("remaining length", i, <, sizeof(*dp6));
+ ND_PRINT(" {%s}(%u)", GET_IP6ADDR_STRING(dp6->u_da),
+ GET_BE_U_4(dp6->u_ds));
dp6++;
i -= sizeof(*dp6);
}
return;
-trunc:
- ND_PRINT("[|rerr]");
-}
-
-static void
-aodv_v6_draft_01_rreq(netdissect_options *ndo, const u_char *dat, u_int length)
-{
- u_int i;
- const struct aodv_rreq6_draft_01 *ap = (const struct aodv_rreq6_draft_01 *)dat;
-
- ND_TCHECK_SIZE(ap);
- if (length < sizeof(*ap))
- goto trunc;
- ND_PRINT(" rreq %u %s%s%s%s%shops %u id 0x%08x\n"
- "\tdst %s seq %u src %s seq %u", length,
- EXTRACT_U_1(ap->rreq_type) & RREQ_JOIN ? "[J]" : "",
- EXTRACT_U_1(ap->rreq_type) & RREQ_REPAIR ? "[R]" : "",
- EXTRACT_U_1(ap->rreq_type) & RREQ_GRAT ? "[G]" : "",
- EXTRACT_U_1(ap->rreq_type) & RREQ_DEST ? "[D]" : "",
- EXTRACT_U_1(ap->rreq_type) & RREQ_UNKNOWN ? "[U] " : " ",
- EXTRACT_U_1(ap->rreq_hops),
- EXTRACT_BE_U_4(ap->rreq_id),
- ip6addr_string(ndo, ap->rreq_da),
- EXTRACT_BE_U_4(ap->rreq_ds),
- ip6addr_string(ndo, ap->rreq_oa),
- EXTRACT_BE_U_4(ap->rreq_os));
- i = length - sizeof(*ap);
- if (i >= sizeof(struct aodv_ext))
- aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
- return;
-
-trunc:
- ND_PRINT(" [|rreq");
-}
-
-static void
-aodv_v6_draft_01_rrep(netdissect_options *ndo, const u_char *dat, u_int length)
-{
- u_int i;
- const struct aodv_rrep6_draft_01 *ap = (const struct aodv_rrep6_draft_01 *)dat;
-
- ND_TCHECK_SIZE(ap);
- if (length < sizeof(*ap))
- goto trunc;
- ND_PRINT(" rrep %u %s%sprefix %u hops %u\n"
- "\tdst %s dseq %u src %s %u ms", length,
- EXTRACT_U_1(ap->rrep_type) & RREP_REPAIR ? "[R]" : "",
- EXTRACT_U_1(ap->rrep_type) & RREP_ACK ? "[A] " : " ",
- EXTRACT_U_1(ap->rrep_ps) & RREP_PREFIX_MASK,
- EXTRACT_U_1(ap->rrep_hops),
- ip6addr_string(ndo, ap->rrep_da),
- EXTRACT_BE_U_4(ap->rrep_ds),
- ip6addr_string(ndo, ap->rrep_oa),
- EXTRACT_BE_U_4(ap->rrep_life));
- i = length - sizeof(*ap);
- if (i >= sizeof(struct aodv_ext))
- aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
- return;
-
-trunc:
- ND_PRINT(" [|rreq");
-}
-
-static void
-aodv_v6_draft_01_rerr(netdissect_options *ndo, const u_char *dat, u_int length)
-{
- u_int i, dc;
- const struct aodv_rerr *ap = (const struct aodv_rerr *)dat;
- const struct rerr_unreach6_draft_01 *dp6;
-
- ND_TCHECK_SIZE(ap);
- if (length < sizeof(*ap))
- goto trunc;
- ND_PRINT(" rerr %s [items %u] [%u]:",
- EXTRACT_U_1(ap->rerr_flags) & RERR_NODELETE ? "[D]" : "",
- EXTRACT_U_1(ap->rerr_dc), length);
- dp6 = (const struct rerr_unreach6_draft_01 *)(const void *)(ap + 1);
- i = length - sizeof(*ap);
- for (dc = EXTRACT_U_1(ap->rerr_dc); dc != 0; dc--) {
- ND_TCHECK_SIZE(dp6);
- if (i < sizeof(*dp6))
- goto trunc;
- ND_PRINT(" {%s}(%u)", ip6addr_string(ndo, dp6->u_da),
- EXTRACT_BE_U_4(dp6->u_ds));
- dp6++;
- i -= sizeof(*dp6);
- }
- return;
-
-trunc:
- ND_PRINT("[|rerr]");
+invalid:
+ nd_print_invalid(ndo);
}
void
uint8_t msg_type;
ndo->ndo_protocol = "aodv";
+ ND_PRINT(" aodv");
+
/*
* The message type is the first byte; make sure we have it
* and then fetch it.
*/
- ND_TCHECK_1(dat);
- msg_type = EXTRACT_U_1(dat);
- ND_PRINT(" aodv");
+ msg_type = GET_U_1(dat);
+ ND_PRINT(" %s", tok2str(msg_type_str, "type %u", msg_type));
switch (msg_type) {
break;
case AODV_RREP_ACK:
- ND_PRINT(" rrep-ack %u", length);
- break;
-
- case AODV_V6_DRAFT_01_RREQ:
- aodv_v6_draft_01_rreq(ndo, dat, length);
- break;
-
- case AODV_V6_DRAFT_01_RREP:
- aodv_v6_draft_01_rrep(ndo, dat, length);
- break;
-
- case AODV_V6_DRAFT_01_RERR:
- aodv_v6_draft_01_rerr(ndo, dat, length);
- break;
-
- case AODV_V6_DRAFT_01_RREP_ACK:
- ND_PRINT(" rrep-ack %u", length);
+ ND_PRINT(" %u", length);
break;
default:
- ND_PRINT(" type %u %u", msg_type, length);
+ ND_PRINT(" %u", length);
}
- return;
-
-trunc:
- ND_PRINT(" [|aodv]");
}
projects / tcpdump / blobdiff