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authorHakan Olsson <ho@cvs.openbsd.org>2004-06-22 03:23:34 +0000
committerHakan Olsson <ho@cvs.openbsd.org>2004-06-22 03:23:34 +0000
commit731404f18e64fdbbeeced7272fc2505de9744c1f (patch)
tree3d0cbbc8609a5180ba8d65d9c77f61c50ea9c8ae /usr.sbin
parent938285083a56a402ec9ed4887a8d271792a37631 (diff)
In draft-ietf-ipsec-nat-t-ike-01,02,03, NAT-D is payload 130. Rewrite a bit
to understand payloads in the private range. Also match a few "well-known" vendor-IDs. markus@ "looks ok".
Diffstat (limited to 'usr.sbin')
-rw-r--r--usr.sbin/tcpdump/ike.h80
-rw-r--r--usr.sbin/tcpdump/print-ike.c33
2 files changed, 95 insertions, 18 deletions
diff --git a/usr.sbin/tcpdump/ike.h b/usr.sbin/tcpdump/ike.h
index 4ea72037e5b..98e7c55bed0 100644
--- a/usr.sbin/tcpdump/ike.h
+++ b/usr.sbin/tcpdump/ike.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: ike.h,v 1.7 2004/03/12 10:10:42 hshoexer Exp $ */
+/* $OpenBSD: ike.h,v 1.8 2004/06/22 03:23:33 ho Exp $ */
/*
* Copyright (c) 2001 Håkan Olsson. All rights reserved.
@@ -109,9 +109,11 @@
#define PAYLOAD_DELETE 12
#define PAYLOAD_VENDOR 13
#define PAYLOAD_ATTRIBUTE 14
-#define PAYLOAD_NAT_D 15
-#define PAYLOAD_NAT_OA 16
-#define PAYLOAD_RESERVED_MIN 17
+#define PAYLOAD_RESERVED_MIN 15
+#define PAYLOAD_PRIVATE_MIN 128
+#define PAYLOAD_NAT_D 130
+#define PAYLOAD_NAT_OA 131
+#define PAYLOAD_PRIVATE_MAX 132
#define IKE_PAYLOAD_TYPES_INITIALIZER \
{ "NONE", /* 0 */ \
@@ -129,8 +131,23 @@
"DELETE", /* 12 */ \
"VENDOR", /* 13 */ \
"ATTRIBUTE", /* 14 (ikecfg) */ \
- "NAT-D", /* 15 */ \
- "NAT-OA", /* 16 */ \
+ }
+
+#if 0
+ "SAK", /* 15 (RFC 3547) */ \
+ "SAT", /* 16 (RFC 3547) */ \
+ "KD", /* 17 (RFC 3547) */ \
+ "SEQ", /* 18 (RFC 3547) */ \
+ "POP", /* 19 (RFC 3547) */ \
+ "SAT", /* 16 (RFC 3547) */ \
+
+#endif
+
+#define IKE_PRIVATE_PAYLOAD_TYPES_INITIALIZER \
+ { "NONE", /* 128 */ \
+ "<unknown 129>", /* 129 */ \
+ "NAT-D", /* 130 (draft-ietf-ipsec-nat-t-ike-03) */ \
+ "NAT-OA", /* 131 (draft-ietf-ipsec-nat-t-ike-03) */ \
}
/* Exchange types */
@@ -153,6 +170,7 @@
"AGGRESSIVE", /* 4 */ \
"INFO", /* 5 */ \
"TRANSACTION", /* 6 (ikecfg) */ \
+ "DPD", /* 7 */ \
/* step up to type 32 with unknowns */ \
"unknown", "unknown", "unknown", "unknown", \
"unknown", "unknown", "unknown", "unknown", \
@@ -160,7 +178,6 @@
"unknown", "unknown", "unknown", "unknown", \
"unknown", "unknown", "unknown", "unknown", \
"unknown", "unknown", "unknown", "unknown", \
- "unknown", \
"QUICK_MODE", /* 32 */ \
"NEW_GROUP_MODE", /* 33 */ \
}
@@ -375,8 +392,49 @@
#define ISAKMP_NAT_OA_SZ 8
static u_int16_t min_payload_lengths[] = {
- 0, ISAKMP_SA_SZ, ISAKMP_PROP_SZ, ISAKMP_TRANSFORM_SZ, ISAKMP_KE_SZ,
- ISAKMP_ID_SZ, ISAKMP_CERT_SZ, ISAKMP_CERTREQ_SZ, ISAKMP_HASH_SZ,
- ISAKMP_SIG_SZ, ISAKMP_NONCE_SZ, ISAKMP_NOTIFY_SZ, ISAKMP_DELETE_SZ,
- ISAKMP_VENDOR_SZ, ISAKMP_ATTRIBUTE_SZ, ISAKMP_NAT_D_SZ, ISAKMP_NAT_OA_SZ
+ 0, ISAKMP_SA_SZ, ISAKMP_PROP_SZ, ISAKMP_TRANSFORM_SZ, ISAKMP_KE_SZ,
+ ISAKMP_ID_SZ, ISAKMP_CERT_SZ, ISAKMP_CERTREQ_SZ, ISAKMP_HASH_SZ,
+ ISAKMP_SIG_SZ, ISAKMP_NONCE_SZ, ISAKMP_NOTIFY_SZ, ISAKMP_DELETE_SZ,
+ ISAKMP_VENDOR_SZ, ISAKMP_ATTRIBUTE_SZ
+};
+
+static u_int16_t min_priv_payload_lengths[] = {
+ 0, 0, ISAKMP_NAT_D_SZ, ISAKMP_NAT_OA_SZ
};
+
+static const struct vendor_id
+{
+ char vid[16];
+ char *name;
+} vendor_ids[] = {
+ {
+ {
+ 0x44, 0x85, 0x15, 0x2d, 0x18, 0xb6, 0xbb, 0xcd,
+ 0x0b, 0xe8, 0xa8, 0x46, 0x95, 0x79, 0xdd, 0xcc,
+ },
+ "v1 NAT-T, draft-ietf-ipsec-nat-t-ike-00",
+ },
+ {
+ {
+ 0x90, 0xcb, 0x80, 0x91, 0x3e, 0xbb, 0x69, 0x6e,
+ 0x08, 0x63, 0x81, 0xb5, 0xec, 0x42, 0x7b, 0x1f,
+ },
+ "v2 NAT-T, draft-ietf-ipsec-nat-t-ike-02",
+ },
+ {
+ {
+ 0x7d, 0x94, 0x19, 0xa6, 0x53, 0x10, 0xca, 0x6f,
+ 0x2c, 0x17, 0x9d, 0x92, 0x15, 0x52, 0x9d, 0x56,
+ },
+ "v3 NAT-T, draft-ietf-ipsec-nat-t-ike-03",
+ },
+ {
+ {
+ 0xaf, 0xca, 0xd7, 0x13, 0x68, 0xa1, 0xf1, 0xc9,
+ 0x6b, 0x86, 0x96, 0xfc, 0x77, 0x57, 0x01, 0x00,
+ /* Last "0x01, 0x00" means major v1, minor v0 */
+ },
+ "DPD v1.0"
+ }
+};
+
diff --git a/usr.sbin/tcpdump/print-ike.c b/usr.sbin/tcpdump/print-ike.c
index accc788ab8a..1f9434575e7 100644
--- a/usr.sbin/tcpdump/print-ike.c
+++ b/usr.sbin/tcpdump/print-ike.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: print-ike.c,v 1.23 2004/06/20 17:51:55 avsm Exp $ */
+/* $OpenBSD: print-ike.c,v 1.24 2004/06/22 03:23:33 ho Exp $ */
/*
* Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999
@@ -29,7 +29,7 @@
#ifndef lint
static const char rcsid[] =
- "@(#) $Header: /cvs/OpenBSD/src/usr.sbin/tcpdump/print-ike.c,v 1.23 2004/06/20 17:51:55 avsm Exp $ (XXX)";
+ "@(#) $Header: /cvs/OpenBSD/src/usr.sbin/tcpdump/print-ike.c,v 1.24 2004/06/22 03:23:33 ho Exp $ (XXX)";
#endif
#include <sys/param.h>
@@ -684,12 +684,20 @@ ike_pl_vendor_print (u_int8_t *buf, int len, u_int8_t doi)
{
struct vendor_payload *vp = (struct vendor_payload *)buf;
u_int8_t *p;
+ int i;
if (len < sizeof(struct vendor_payload)) {
printf(" [|payload]");
return;
}
+ for (i = 0; i < sizeof vendor_ids / sizeof vendor_ids[0]; i ++)
+ if (memcmp(vp->vid, vendor_ids[i].vid,
+ sizeof vendor_ids[i].vid) == 0) {
+ printf (" (supports %s)", vendor_ids[i].name);
+ return;
+ }
+
if (doi != IPSEC_DOI)
return;
@@ -813,17 +821,28 @@ void
ike_pl_print (u_int8_t type, u_int8_t *buf, u_int8_t doi)
{
static const char *pltypes[] = IKE_PAYLOAD_TYPES_INITIALIZER;
+ static const char *plprivtypes[] =
+ IKE_PRIVATE_PAYLOAD_TYPES_INITIALIZER;
u_int8_t next_type = buf[0];
u_int16_t this_len = buf[2]<<8 | buf[3];
- printf("\n\t%spayload: %s len: %hu", ike_tab_offset(),
- (type < (sizeof pltypes/sizeof pltypes[0]) ?
- pltypes[type] : "<unknown>"), this_len);
+ if (type < PAYLOAD_PRIVATE_MIN || type >= PAYLOAD_PRIVATE_MAX)
+ printf("\n\t%spayload: %s len: %hu", ike_tab_offset(),
+ (type < (sizeof pltypes/sizeof pltypes[0]) ?
+ pltypes[type] : "<unknown>"), this_len);
+ else
+ printf("\n\t%spayload: %s len: %hu", ike_tab_offset(),
+ plprivtypes[type - PAYLOAD_PRIVATE_MIN], this_len);
- if ((type < PAYLOAD_RESERVED_MIN
- && this_len < min_payload_lengths[type]) || this_len == 0)
+ if ((type < PAYLOAD_RESERVED_MIN &&
+ this_len < min_payload_lengths[type]) || this_len == 0)
goto pltrunc;
+ if ((type > PAYLOAD_PRIVATE_MIN && type < PAYLOAD_PRIVATE_MAX &&
+ this_len < min_priv_payload_lengths[type - PAYLOAD_PRIVATE_MIN]) ||
+ this_len == 0)
+ goto pltrunc;
+
if ((u_int8_t *)&(buf[0]) > snapend - this_len)
goto pltrunc;