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wireshark/packet-isakmp.c
Guy Harris 43ccfd8054 Add an additional "protocol index" argument to "{old_}dissector_add()", 
"{old_}heur_dissector_add()", "{old_}conv_dissector_add()", and
"register_dissector()", so that an entry in those tables has associated
with it the protocol index of the protocol the dissector handles (or -1,
if there is no protocol index for it).

This is for future use in a number of places.

(Arguably, "proto_register_protocol()" should take a dissector pointer
as an argument, but

	1) it'd have to handle both regular and heuristic dissectors;

	2) making it take either a "dissector_t" or a union of that and
	   a "heur_dissector_t" introduces some painful header-file
	   interdependencies

so I'm punting on that for now.  As with other Ethereal internal APIs,
these APIs are subject to change in the future, at least until Ethereal
1.0 comes out....)

svn path=/trunk/; revision=2849
2001-01-09 06:32:10 +00:00

1460 lines
43 KiB
C
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/* packet-isakmp.c
* Routines for the Internet Security Association and Key Management Protocol
* (ISAKMP) (RFC 2408)
* Brad Robel-Forrest <brad.robel-forrest@watchguard.com>
*
* $Id: packet-isakmp.c,v 1.34 2001/01/09 06:31:37 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@zing.org>
* Copyright 1998 Gerald Combs
*
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#include <stdio.h>
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#include <glib.h>
#ifdef NEED_SNPRINTF_H
# include "snprintf.h"
#endif
#include "packet.h"
static int proto_isakmp = -1;
static gint ett_isakmp = -1;
static gint ett_isakmp_flags = -1;
static gint ett_isakmp_payload = -1;
#define UDP_PORT_ISAKMP 500
#define NUM_PROTO_TYPES 5
#define proto2str(t) \
((t < NUM_PROTO_TYPES) ? prototypestr[t] : "UNKNOWN-PROTO-TYPE")
static const char *prototypestr[NUM_PROTO_TYPES] = {
"RESERVED",
"ISAKMP",
"IPSEC_AH",
"IPSEC_ESP",
"IPCOMP"
};
#define NUM_P1_ATT_TYPES 17
#define p1_atttype2str(t) \
((t < NUM_P1_ATT_TYPES) ? p1_atttypestr[t] : "UNKNOWN-ATTRIBUTE-TYPE")
static const char *p1_atttypestr[NUM_P1_ATT_TYPES] = {
"UNKNOWN-ATTRIBUTE-TYPE",
"Encryption-Algorithm",
"Hash-Algorithm",
"Authentication-Method",
"Group-Description",
"Group-Type",
"Group-Prime",
"Group-Generator-One",
"Group-Generator-Two",
"Group-Curve-A",
"Group-Curve-B",
"Life-Type",
"Life-Duration",
"PRF",
"Key-Length",
"Field-Size",
"Group-Order"
};
#define NUM_ATT_TYPES 11
#define atttype2str(t) \
((t < NUM_ATT_TYPES) ? atttypestr[t] : "UNKNOWN-ATTRIBUTE-TYPE")
static const char *atttypestr[NUM_ATT_TYPES] = {
"UNKNOWN-ATTRIBUTE-TYPE",
"SA-Life-Type",
"SA-Life-Duration",
"Group-Description",
"Encapsulation-Mode",
"Authentication-Algorithm",
"Key-Length",
"Key-Rounds",
"Compress-Dictinary-Size",
"Compress-Private-Algorithm",
"ECN Tunnel"
};
#define NUM_TRANS_TYPES 2
#define trans2str(t) \
((t < NUM_TRANS_TYPES) ? transtypestr[t] : "UNKNOWN-TRANS-TYPE")
static const char *transtypestr[NUM_TRANS_TYPES] = {
"RESERVED",
"KEY_IKE"
};
#define NUM_AH_TRANS_TYPES 8
#define ah_trans2str(t) \
((t < NUM_AH_TRANS_TYPES) ? ah_transtypestr[t] : "UNKNOWN-AH-TRANS-TYPE")
static const char *ah_transtypestr[NUM_AH_TRANS_TYPES] = {
"RESERVED",
"RESERVED",
"MD5",
"SHA",
"DES",
"SHA2-256",
"SHA2-384",
"SHA2-512"
};
#define NUM_ESP_TRANS_TYPES 13
#define esp_trans2str(t) \
((t < NUM_ESP_TRANS_TYPES) ? esp_transtypestr[t] : "UNKNOWN-ESP-TRANS-TYPE")
static const char *esp_transtypestr[NUM_ESP_TRANS_TYPES] = {
"RESERVED",
"DES-IV64",
"DES",
"3DES",
"RC5",
"IDEA",
"CAST",
"BLOWFISH",
"3IDEA",
"DES-IV32",
"RC4",
"NULL",
"AES"
};
#define NUM_ID_TYPES 12
#define id2str(t) \
((t < NUM_ID_TYPES) ? idtypestr[t] : "UNKNOWN-ID-TYPE")
static const char *idtypestr[NUM_ID_TYPES] = {
"RESERVED",
"IPV4_ADDR",
"FQDN",
"USER_FQDN",
"IPV4_ADDR_SUBNET",
"IPV6_ADDR",
"IPV6_ADDR_SUBNET",
"IPV4_ADDR_RANGE",
"IPV6_ADDR_RANGE",
"DER_ASN1_DN",
"DER_ASN1_GN",
"KEY_ID"
};
struct isakmp_hdr {
guint8 icookie[8];
guint8 rcookie[8];
guint8 next_payload;
guint8 version;
guint8 exch_type;
guint8 flags;
#define E_FLAG 0x01
#define C_FLAG 0x02
#define A_FLAG 0x04
guint8 message_id[4];
guint8 length[4];
};
struct sa_hdr {
guint8 next_payload;
guint8 reserved;
guint8 length[2];
guint8 doi[4];
guint8 situation[4];
};
struct proposal_hdr {
guint8 next_payload;
guint8 reserved;
guint8 length[2];
guint8 proposal_num;
guint8 protocol_id;
guint8 spi_size;
guint8 num_transforms;
};
struct trans_hdr {
guint8 next_payload;
guint8 reserved;
guint8 length[2];
guint8 transform_num;
guint8 transform_id;
guint8 reserved2[2];
};
#define TRANS_LEN(p) (pntohs(&((struct trans_hdr *)(p))->length))
struct ke_hdr {
guint8 next_payload;
guint8 reserved;
guint8 length[2];
};
struct id_hdr {
guint8 next_payload;
guint8 reserved;
guint8 length[2];
guint8 id_type;
guint8 protocol_id;
guint8 port[2];
};
struct cert_hdr {
guint8 next_payload;
guint8 reserved;
guint8 length[2];
guint8 cert_enc;
};
struct certreq_hdr {
guint8 next_payload;
guint8 reserved;
guint8 length[2];
guint8 cert_type;
};
struct hash_hdr {
guint8 next_payload;
guint8 reserved;
guint8 length[2];
};
struct sig_hdr {
guint8 next_payload;
guint8 reserved;
guint8 length[2];
};
struct nonce_hdr {
guint8 next_payload;
guint8 reserved;
guint8 length[2];
};
struct notif_hdr {
guint8 next_payload;
guint8 reserved;
guint8 length[2];
guint8 doi[4];
guint8 protocol_id;
guint8 spi_size;
guint8 msgtype[2];
};
struct delete_hdr {
guint8 next_payload;
guint8 reserved;
guint8 length[2];
guint8 doi[4];
guint8 protocol_id;
guint8 spi_size;
guint8 num_spis[2];
};
struct vid_hdr {
guint8 next_payload;
guint8 reserved;
guint8 length[2];
};
struct cfg_hdr {
guint8 next_payload;
guint8 reserved;
guint8 length[2];
guint8 type;
guint8 reserved2;
guint8 identifier[2];
};
static void dissect_none(const u_char *, int, frame_data *, proto_tree *);
static void dissect_sa(const u_char *, int, frame_data *, proto_tree *);
static void dissect_proposal(const u_char *, int, frame_data *, proto_tree *);
static void dissect_transform(const u_char *, int, frame_data *, proto_tree *,
guint8);
static void dissect_key_exch(const u_char *, int, frame_data *, proto_tree *);
static void dissect_id(const u_char *, int, frame_data *, proto_tree *);
static void dissect_cert(const u_char *, int, frame_data *, proto_tree *);
static void dissect_certreq(const u_char *, int, frame_data *, proto_tree *);
static void dissect_hash(const u_char *, int, frame_data *, proto_tree *);
static void dissect_sig(const u_char *, int, frame_data *, proto_tree *);
static void dissect_nonce(const u_char *, int, frame_data *, proto_tree *);
static void dissect_notif(const u_char *, int, frame_data *, proto_tree *);
static void dissect_delete(const u_char *, int, frame_data *, proto_tree *);
static void dissect_vid(const u_char *, int, frame_data *, proto_tree *);
static void dissect_config(const u_char *, int, frame_data *, proto_tree *);
static const char *payloadtype2str(guint8);
static const char *exchtype2str(guint8);
static const char *doitype2str(guint32);
static const char *msgtype2str(guint16);
static const char *situation2str(guint32);
static const char *value2str(int, guint16, guint16);
static const char *num2str(const guint8 *, guint16);
static const char *attrtype2str(guint8);
static const char *cfgattrident2str(guint16);
#define NUM_LOAD_TYPES 15
#define loadtype2str(t) \
((t < NUM_LOAD_TYPES) ? strfuncs[t].str : "Unknown payload type")
#define LOAD_TYPE_TRANSFORM 3
static struct strfunc {
const char * str;
void (*func)(const u_char *, int, frame_data *, proto_tree *);
} strfuncs[NUM_LOAD_TYPES] = {
{"NONE", dissect_none },
{"Security Association", dissect_sa },
{"Proposal", dissect_proposal },
{"Transform", NULL },
{"Key Exchange", dissect_key_exch },
{"Identification", dissect_id },
{"Certificate", dissect_cert },
{"Certificate Request", dissect_certreq },
{"Hash", dissect_hash },
{"Signature", dissect_sig },
{"Nonce", dissect_nonce },
{"Notification", dissect_notif },
{"Delete", dissect_delete },
{"Vendor ID", dissect_vid },
{"Attrib", dissect_config }
};
static void
dissect_isakmp(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
struct isakmp_hdr * hdr = (struct isakmp_hdr *)(pd + offset);
guint32 len;
OLD_CHECK_DISPLAY_AS_DATA(proto_isakmp, pd, offset, fd, tree);
if (check_col(fd, COL_PROTOCOL))
col_set_str(fd, COL_PROTOCOL, "ISAKMP");
len = pntohl(&hdr->length);
if (check_col(fd, COL_INFO))
col_add_fstr(fd, COL_INFO, "%s", exchtype2str(hdr->exch_type));
if (IS_DATA_IN_FRAME(offset) && tree) {
proto_item * ti;
proto_tree * isakmp_tree;
ti = proto_tree_add_item(tree, proto_isakmp, NullTVB, offset, len, FALSE);
isakmp_tree = proto_item_add_subtree(ti, ett_isakmp);
proto_tree_add_text(isakmp_tree, NullTVB, offset, sizeof(hdr->icookie),
"Initiator cookie");
offset += sizeof(hdr->icookie);
proto_tree_add_text(isakmp_tree, NullTVB, offset, sizeof(hdr->rcookie),
"Responder cookie");
offset += sizeof(hdr->rcookie);
proto_tree_add_text(isakmp_tree, NullTVB, offset, sizeof(hdr->next_payload),
"Next payload: %s (%u)",
payloadtype2str(hdr->next_payload), hdr->next_payload);
offset += sizeof(hdr->next_payload);
proto_tree_add_text(isakmp_tree, NullTVB, offset, sizeof(hdr->version),
"Version: %u.%u",
hi_nibble(hdr->version), lo_nibble(hdr->version));
offset += sizeof(hdr->version);
proto_tree_add_text(isakmp_tree, NullTVB, offset, sizeof(hdr->exch_type),
"Exchange type: %s (%u)",
exchtype2str(hdr->exch_type), hdr->exch_type);
offset += sizeof(hdr->exch_type);
{
proto_item * fti;
proto_tree * ftree;
fti = proto_tree_add_text(isakmp_tree, NullTVB, offset, sizeof(hdr->flags), "Flags");
ftree = proto_item_add_subtree(fti, ett_isakmp_flags);
proto_tree_add_text(ftree, NullTVB, offset, 1, "%s",
decode_boolean_bitfield(hdr->flags, E_FLAG, sizeof(hdr->flags)*8,
"Encryption", "No encryption"));
proto_tree_add_text(ftree, NullTVB, offset, 1, "%s",
decode_boolean_bitfield(hdr->flags, C_FLAG, sizeof(hdr->flags)*8,
"Commit", "No commit"));
proto_tree_add_text(ftree, NullTVB, offset, 1, "%s",
decode_boolean_bitfield(hdr->flags, A_FLAG, sizeof(hdr->flags)*8,
"Authentication", "No authentication"));
offset += sizeof(hdr->flags);
}
proto_tree_add_text(isakmp_tree, NullTVB, offset, sizeof(hdr->message_id),
"Message ID: 0x%02x%02x%02x%02x", hdr->message_id[0],
hdr->message_id[1], hdr->message_id[2], hdr->message_id[3]);
offset += sizeof(hdr->message_id);
proto_tree_add_text(isakmp_tree, NullTVB, offset, sizeof(hdr->length),
"Length: %u", len);
offset += sizeof(hdr->length);
if (hdr->flags & E_FLAG) {
if (IS_DATA_IN_FRAME(offset) && isakmp_tree) {
proto_tree_add_text(isakmp_tree, NullTVB, offset, END_OF_FRAME,
"Encrypted payload (%d byte%s)",
END_OF_FRAME, plurality(END_OF_FRAME, "", "s"));
}
} else {
if (hdr->next_payload < NUM_LOAD_TYPES) {
if (hdr->next_payload == LOAD_TYPE_TRANSFORM)
dissect_transform(pd, offset, fd, isakmp_tree, 0); /* XXX - protocol ID? */
else
(*strfuncs[hdr->next_payload].func)(pd, offset, fd, isakmp_tree);
}
else
old_dissect_data(pd, offset, fd, isakmp_tree);
}
}
}
static void
dissect_none(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
}
static void
dissect_sa(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
struct sa_hdr * hdr = (struct sa_hdr *)(pd + offset);
guint16 length = pntohs(&hdr->length);
guint32 doi = pntohl(&hdr->doi);
guint32 situation = pntohl(&hdr->situation);
proto_item * ti = proto_tree_add_text(tree, NullTVB, offset, length, "Security Association payload");
proto_tree * ntree;
ntree = proto_item_add_subtree(ti, ett_isakmp_payload);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->next_payload),
"Next payload: %s (%u)",
payloadtype2str(hdr->next_payload), hdr->next_payload);
offset += sizeof(hdr->next_payload) * 2;
proto_tree_add_text(ntree, NullTVB, offset, sizeof(length),
"Length: %u", length);
offset += sizeof(length);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(doi),
"Domain of interpretation: %s (%u)",
doitype2str(doi), doi);
offset += sizeof(doi);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(situation),
"Situation: %s (%u)",
situation2str(situation), situation);
offset += sizeof(situation);
dissect_proposal(pd, offset, fd, ntree);
offset += (length - sizeof(*hdr));
if (hdr->next_payload < NUM_LOAD_TYPES) {
if (hdr->next_payload == LOAD_TYPE_TRANSFORM)
dissect_transform(pd, offset, fd, tree, 0); /* XXX - protocol ID? */
else
(*strfuncs[hdr->next_payload].func)(pd, offset, fd, tree);
}
else
old_dissect_data(pd, offset, fd, tree);
}
static void
dissect_proposal(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
struct proposal_hdr * hdr = (struct proposal_hdr *)(pd + offset);
guint16 length = pntohs(&hdr->length);
proto_item * ti = proto_tree_add_text(tree, NullTVB, offset, length, "Proposal payload");
proto_tree * ntree;
int next_hdr_offset = offset + length;
ntree = proto_item_add_subtree(ti, ett_isakmp_payload);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->next_payload),
"Next payload: %s (%u)",
payloadtype2str(hdr->next_payload), hdr->next_payload);
offset += sizeof(hdr->next_payload) * 2;
proto_tree_add_text(ntree, NullTVB, offset, sizeof(length),
"Length: %u", length);
offset += sizeof(length);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->proposal_num),
"Proposal number: %u", hdr->proposal_num);
offset += sizeof(hdr->proposal_num);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->protocol_id),
"Protocol ID: %s (%u)",
proto2str(hdr->protocol_id), hdr->protocol_id);
offset += sizeof(hdr->protocol_id);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->spi_size),
"SPI size: %u", hdr->spi_size);
offset += sizeof(hdr->spi_size);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->num_transforms),
"Number of transforms: %u", hdr->num_transforms);
offset += sizeof(hdr->num_transforms);
if (hdr->spi_size) {
proto_tree_add_text(ntree, NullTVB, offset, hdr->spi_size, "SPI");
offset += hdr->spi_size;
}
if (hdr->num_transforms > 0)
dissect_transform(pd, offset, fd, ntree, hdr->protocol_id);
if (hdr->next_payload < NUM_LOAD_TYPES) {
if (hdr->next_payload == LOAD_TYPE_TRANSFORM)
dissect_transform(pd, next_hdr_offset, fd, tree, 0); /* XXX - protocol ID? */
else
(*strfuncs[hdr->next_payload].func)(pd, next_hdr_offset, fd, tree);
}
else
old_dissect_data(pd, next_hdr_offset, fd, tree);
}
static void
dissect_transform(const u_char *pd, int offset, frame_data *fd,
proto_tree *tree, guint8 protocol_id)
{
struct trans_hdr * hdr = (struct trans_hdr *)(pd + offset);
guint16 length = pntohs(&hdr->length);
int slength = length;
proto_item * ti = proto_tree_add_text(tree, NullTVB, offset, length, "Transform payload");
proto_tree * ntree;
ntree = proto_item_add_subtree(ti, ett_isakmp_payload);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->next_payload),
"Next payload: %s (%u)",
payloadtype2str(hdr->next_payload), hdr->next_payload);
offset += sizeof(hdr->next_payload) * 2;
proto_tree_add_text(ntree, NullTVB, offset, sizeof(length),
"Length: %u", length);
offset += sizeof(length);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->transform_num),
"Transform number: %u", hdr->transform_num);
offset += sizeof(hdr->transform_num);
switch (protocol_id) {
default:
case 1: /* ISAKMP */
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->transform_id),
"Transform ID: %s (%u)",
trans2str(hdr->transform_id), hdr->transform_id);
break;
case 2: /* AH */
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->transform_id),
"Transform ID: %s (%u)",
ah_trans2str(hdr->transform_id), hdr->transform_id);
break;
case 3: /* ESP */
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->transform_id),
"Transform ID: %s (%u)",
esp_trans2str(hdr->transform_id), hdr->transform_id);
break;
}
offset += sizeof(hdr->transform_id) + sizeof(hdr->reserved2);
slength -= sizeof(*hdr);
while (slength>0) {
const char *str = NULL;
int ike_phase1 = 0;
guint16 type = pntohs(pd + offset) & 0x7fff;
guint16 val_len = pntohs(pd + offset + 2);
if (protocol_id == 1 && hdr->transform_id == 1) {
ike_phase1 = 1;
str = p1_atttype2str(type);
}
else {
str = atttype2str(type);
}
if (pd[offset] & 0x80) {
proto_tree_add_text(ntree, NullTVB, offset, 4,
"%s (%u): %s (%u)",
str, type,
value2str(ike_phase1, type, val_len), val_len);
offset += 4;
slength -= 4;
}
else {
guint16 pack_len = 4 + val_len;
proto_tree_add_text(ntree, NullTVB, offset, pack_len,
"%s (%u): %s",
str, type,
num2str(pd + offset + 4, val_len));
offset += pack_len;
slength -= pack_len;
}
#if 0 /* the last byte will fail with this test */
if (!IS_DATA_IN_FRAME(offset)) {
proto_tree_add_text(ntree, NullTVB, 0, 0,
"Bad Offset: %u", offset);
return;
}
#endif
}
if (hdr->next_payload < NUM_LOAD_TYPES) {
if (hdr->next_payload == LOAD_TYPE_TRANSFORM)
dissect_transform(pd, offset, fd, tree, protocol_id);
else
(*strfuncs[hdr->next_payload].func)(pd, offset, fd, tree);
}
else
old_dissect_data(pd, offset, fd, tree);
}
static void
dissect_key_exch(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
struct ke_hdr * hdr = (struct ke_hdr *)(pd + offset);
guint16 length = pntohs(&hdr->length);
proto_item * ti = proto_tree_add_text(tree, NullTVB, offset, length, "Key Exchange payload");
proto_tree * ntree;
ntree = proto_item_add_subtree(ti, ett_isakmp_payload);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->next_payload),
"Next payload: %s (%u)",
payloadtype2str(hdr->next_payload), hdr->next_payload);
offset += sizeof(hdr->next_payload) * 2;
proto_tree_add_text(ntree, NullTVB, offset, sizeof(length),
"Length: %u", length);
offset += sizeof(length);
proto_tree_add_text(ntree, NullTVB, offset, length - sizeof(*hdr), "Key Exchange Data");
offset += (length - sizeof(*hdr));
if (hdr->next_payload < NUM_LOAD_TYPES) {
if (hdr->next_payload == LOAD_TYPE_TRANSFORM)
dissect_transform(pd, offset, fd, tree, 0); /* XXX - protocol ID? */
else
(*strfuncs[hdr->next_payload].func)(pd, offset, fd, tree);
}
else
old_dissect_data(pd, offset, fd, tree);
}
static void
dissect_id(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
struct id_hdr * hdr = (struct id_hdr *)(pd + offset);
guint16 length = pntohs(&hdr->length);
proto_item * ti = proto_tree_add_text(tree, NullTVB, offset, length, "Identification payload");
proto_tree * ntree;
ntree = proto_item_add_subtree(ti, ett_isakmp_payload);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->next_payload),
"Next payload: %s (%u)",
payloadtype2str(hdr->next_payload), hdr->next_payload);
offset += sizeof(hdr->next_payload) * 2;
proto_tree_add_text(ntree, NullTVB, offset, sizeof(length),
"Length: %u", length);
offset += sizeof(length);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->id_type),
"ID type: %s (%u)", id2str(hdr->id_type), hdr->id_type);
offset += sizeof(hdr->id_type);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->protocol_id),
"Protocol ID: %u", hdr->protocol_id);
offset += sizeof(hdr->protocol_id);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->port),
"Port: %u", pntohs(&hdr->port));
offset += sizeof(hdr->port);
switch (hdr->id_type) {
case 1:
case 4:
proto_tree_add_text(ntree, NullTVB, offset, length-sizeof(*hdr),
"Identification data: %s", ip_to_str(pd+offset));
break;
case 2:
case 3:
proto_tree_add_text(ntree, NullTVB, offset, length-sizeof(*hdr),
"Identification data: %s", (char *)(pd+offset));
break;
default:
proto_tree_add_text(ntree, NullTVB, offset, length - sizeof(*hdr), "Identification Data");
}
offset += (length - sizeof(*hdr));
if (hdr->next_payload < NUM_LOAD_TYPES) {
if (hdr->next_payload == LOAD_TYPE_TRANSFORM)
dissect_transform(pd, offset, fd, tree, 0); /* XXX - protocol ID? */
else
(*strfuncs[hdr->next_payload].func)(pd, offset, fd, tree);
}
else
old_dissect_data(pd, offset, fd, tree);
}
static void
dissect_cert(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
struct cert_hdr * hdr = (struct cert_hdr *)(pd + offset);
guint16 length = pntohs(&hdr->length);
proto_item * ti = proto_tree_add_text(tree, NullTVB, offset, length, "Certificate payload");
proto_tree * ntree;
ntree = proto_item_add_subtree(ti, ett_isakmp_payload);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->next_payload),
"Next payload: %s (%u)",
payloadtype2str(hdr->next_payload), hdr->next_payload);
offset += sizeof(hdr->next_payload) * 2;
proto_tree_add_text(ntree, NullTVB, offset, sizeof(length),
"Length: %u", length);
offset += sizeof(length);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->cert_enc),
"Certificate encoding: %u", hdr->cert_enc);
offset += sizeof(hdr->cert_enc);
proto_tree_add_text(ntree, NullTVB, offset, length - sizeof(*hdr), "Certificate Data");
offset += (length - sizeof(*hdr));
if (hdr->next_payload < NUM_LOAD_TYPES) {
if (hdr->next_payload == LOAD_TYPE_TRANSFORM)
dissect_transform(pd, offset, fd, tree, 0); /* XXX - protocol ID? */
else
(*strfuncs[hdr->next_payload].func)(pd, offset, fd, tree);
}
else
old_dissect_data(pd, offset, fd, tree);
}
static void
dissect_certreq(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
struct certreq_hdr * hdr = (struct certreq_hdr *)(pd + offset);
guint16 length = pntohs(&hdr->length);
proto_item * ti = proto_tree_add_text(tree, NullTVB, offset, length, "Certificate Request payload");
proto_tree * ntree;
ntree = proto_item_add_subtree(ti, ett_isakmp_payload);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->next_payload),
"Next payload: %s (%u)",
payloadtype2str(hdr->next_payload), hdr->next_payload);
offset += sizeof(hdr->next_payload) * 2;
proto_tree_add_text(ntree, NullTVB, offset, sizeof(length),
"Length: %u", length);
offset += sizeof(length);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->cert_type),
"Certificate type: %u", hdr->cert_type);
offset += sizeof(hdr->cert_type);
proto_tree_add_text(ntree, NullTVB, offset, length - sizeof(*hdr), "Certificate Authority");
offset += (length - sizeof(*hdr));
if (hdr->next_payload < NUM_LOAD_TYPES) {
if (hdr->next_payload == LOAD_TYPE_TRANSFORM)
dissect_transform(pd, offset, fd, tree, 0); /* XXX - protocol ID? */
else
(*strfuncs[hdr->next_payload].func)(pd, offset, fd, tree);
}
else
old_dissect_data(pd, offset, fd, tree);
}
static void
dissect_hash(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
struct hash_hdr * hdr = (struct hash_hdr *)(pd + offset);
guint16 length = pntohs(&hdr->length);
proto_item * ti = proto_tree_add_text(tree, NullTVB, offset, length, "Hash payload");
proto_tree * ntree;
ntree = proto_item_add_subtree(ti, ett_isakmp_payload);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->next_payload),
"Next payload: %s (%u)",
payloadtype2str(hdr->next_payload), hdr->next_payload);
offset += sizeof(hdr->next_payload) * 2;
proto_tree_add_text(ntree, NullTVB, offset, sizeof(length),
"Length: %u", length);
offset += sizeof(length);
proto_tree_add_text(ntree, NullTVB, offset, length - sizeof(*hdr), "Hash Data");
offset += (length - sizeof(*hdr));
if (hdr->next_payload < NUM_LOAD_TYPES) {
if (hdr->next_payload == LOAD_TYPE_TRANSFORM)
dissect_transform(pd, offset, fd, tree, 0); /* XXX - protocol ID? */
else
(*strfuncs[hdr->next_payload].func)(pd, offset, fd, tree);
}
else
old_dissect_data(pd, offset, fd, tree);
}
static void
dissect_sig(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
struct sig_hdr * hdr = (struct sig_hdr *)(pd + offset);
guint16 length = pntohs(&hdr->length);
proto_item * ti = proto_tree_add_text(tree, NullTVB, offset, length, "Signature payload");
proto_tree * ntree;
ntree = proto_item_add_subtree(ti, ett_isakmp_payload);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->next_payload),
"Next payload: %s (%u)",
payloadtype2str(hdr->next_payload), hdr->next_payload);
offset += sizeof(hdr->next_payload) * 2;
proto_tree_add_text(ntree, NullTVB, offset, sizeof(length),
"Length: %u", length);
offset += sizeof(length);
proto_tree_add_text(ntree, NullTVB, offset, length - sizeof(*hdr), "Signature Data");
offset += (length - sizeof(*hdr));
if (hdr->next_payload < NUM_LOAD_TYPES) {
if (hdr->next_payload == LOAD_TYPE_TRANSFORM)
dissect_transform(pd, offset, fd, tree, 0); /* XXX - protocol ID? */
else
(*strfuncs[hdr->next_payload].func)(pd, offset, fd, tree);
}
else
old_dissect_data(pd, offset, fd, tree);
}
static void
dissect_nonce(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
struct nonce_hdr * hdr = (struct nonce_hdr *)(pd + offset);
guint16 length = pntohs(&hdr->length);
proto_item * ti = proto_tree_add_text(tree, NullTVB, offset, length, "Nonce payload");
proto_tree * ntree;
ntree = proto_item_add_subtree(ti, ett_isakmp_payload);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->next_payload),
"Next payload: %s (%u)",
payloadtype2str(hdr->next_payload), hdr->next_payload);
offset += sizeof(hdr->next_payload) * 2;
proto_tree_add_text(ntree, NullTVB, offset, sizeof(length),
"Length: %u", length);
offset += sizeof(length);
proto_tree_add_text(ntree, NullTVB, offset, length - sizeof(*hdr), "Nonce Data");
offset += (length - sizeof(*hdr));
if (hdr->next_payload < NUM_LOAD_TYPES) {
if (hdr->next_payload == LOAD_TYPE_TRANSFORM)
dissect_transform(pd, offset, fd, tree, 0); /* XXX - protocol ID? */
else
(*strfuncs[hdr->next_payload].func)(pd, offset, fd, tree);
}
else
old_dissect_data(pd, offset, fd, tree);
}
static void
dissect_notif(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
struct notif_hdr * hdr = (struct notif_hdr *)(pd + offset);
guint16 length = pntohs(&hdr->length);
guint32 doi = pntohl(&hdr->doi);
guint16 msgtype = pntohs(&hdr->msgtype);
proto_item * ti = proto_tree_add_text(tree, NullTVB, offset, length, "Notification payload");
proto_tree * ntree;
ntree = proto_item_add_subtree(ti, ett_isakmp_payload);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->next_payload),
"Next payload: %s (%u)",
payloadtype2str(hdr->next_payload), hdr->next_payload);
offset += sizeof(hdr->next_payload) * 2;
proto_tree_add_text(ntree, NullTVB, offset, sizeof(length),
"Length: %u", length);
offset += sizeof(length);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(doi),
"Domain of Interpretation: %s (%u)", doitype2str(doi), doi);
offset += sizeof(doi);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->protocol_id),
"Protocol ID: %s (%u)",
proto2str(hdr->protocol_id), hdr->protocol_id);
offset += sizeof(hdr->protocol_id);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->spi_size),
"SPI size: %u", hdr->spi_size);
offset += sizeof(hdr->spi_size);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(msgtype),
"Message type: %s (%u)", msgtype2str(msgtype), msgtype);
offset += sizeof(msgtype);
if (hdr->spi_size) {
proto_tree_add_text(ntree, NullTVB, offset, hdr->spi_size, "Security Parameter Index");
offset += hdr->spi_size;
}
if (((int)length - sizeof(*hdr)) > 0) {
proto_tree_add_text(ntree, NullTVB, offset, length - sizeof(*hdr) - hdr->spi_size,
"Notification Data");
offset += (length - sizeof(*hdr) - hdr->spi_size);
}
if (hdr->next_payload < NUM_LOAD_TYPES) {
if (hdr->next_payload == LOAD_TYPE_TRANSFORM)
dissect_transform(pd, offset, fd, tree, 0); /* XXX - protocol ID? */
else
(*strfuncs[hdr->next_payload].func)(pd, offset, fd, tree);
}
else
old_dissect_data(pd, offset, fd, tree);
}
static void
dissect_delete(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
struct delete_hdr * hdr = (struct delete_hdr *)(pd + offset);
guint16 length = pntohs(&hdr->length);
guint32 doi = pntohl(&hdr->doi);
guint16 num_spis = pntohs(&hdr->num_spis);
proto_item * ti = proto_tree_add_text(tree, NullTVB, offset, length, "Delete payload");
proto_tree * ntree;
guint16 i;
ntree = proto_item_add_subtree(ti, ett_isakmp_payload);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->next_payload),
"Next payload: %s (%u)",
payloadtype2str(hdr->next_payload), hdr->next_payload);
offset += sizeof(hdr->next_payload) * 2;
proto_tree_add_text(ntree, NullTVB, offset, sizeof(length),
"Length: %u", length);
offset += sizeof(length);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(doi),
"Domain of Interpretation: %s (%u)", doitype2str(doi), doi);
offset += sizeof(doi);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->protocol_id),
"Protocol ID: %s (%u)",
proto2str(hdr->protocol_id), hdr->protocol_id);
offset += sizeof(hdr->protocol_id);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->spi_size),
"SPI size: %u", hdr->spi_size);
offset += sizeof(hdr->spi_size);
proto_tree_add_text(ntree, NullTVB, offset, num_spis,
"Number of SPIs: %u", num_spis);
offset += sizeof(hdr->num_spis);
for (i = 0; i < num_spis; ++i) {
proto_tree_add_text(ntree, NullTVB, offset, hdr->spi_size,
"SPI (%d)", i);
offset += hdr->spi_size;
}
if (hdr->next_payload < NUM_LOAD_TYPES) {
if (hdr->next_payload == LOAD_TYPE_TRANSFORM)
dissect_transform(pd, offset, fd, tree, 0); /* XXX - protocol ID? */
else
(*strfuncs[hdr->next_payload].func)(pd, offset, fd, tree);
}
else
old_dissect_data(pd, offset, fd, tree);
}
static void
dissect_vid(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
struct vid_hdr * hdr = (struct vid_hdr *)(pd + offset);
guint16 length = pntohs(&hdr->length);
proto_item * ti = proto_tree_add_text(tree, NullTVB, offset, length, "Vendor ID payload");
proto_tree * ntree;
ntree = proto_item_add_subtree(ti, ett_isakmp_payload);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->next_payload),
"Next payload: %s (%u)",
payloadtype2str(hdr->next_payload), hdr->next_payload);
offset += sizeof(hdr->next_payload) * 2;
proto_tree_add_text(ntree, NullTVB, offset, sizeof(length),
"Length: %u", length);
offset += sizeof(length);
proto_tree_add_text(ntree, NullTVB, offset, length - sizeof(*hdr), "Vendor ID");
offset += (length - sizeof(*hdr));
if (hdr->next_payload < NUM_LOAD_TYPES) {
if (hdr->next_payload == LOAD_TYPE_TRANSFORM)
dissect_transform(pd, offset, fd, tree, 0); /* XXX - protocol ID? */
else
(*strfuncs[hdr->next_payload].func)(pd, offset, fd, tree);
}
else
old_dissect_data(pd, offset, fd, tree);
}
static void
dissect_config(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
struct cfg_hdr * hdr = (struct cfg_hdr *)(pd + offset);
guint16 length = pntohs(&hdr->length);
int slength = length;
proto_item * ti = proto_tree_add_text(tree, NullTVB, offset, length, "Attribute payload");
proto_tree * ntree;
ntree = proto_item_add_subtree(ti, ett_isakmp_payload);
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->next_payload),
"Next payload: %s (%u)",
payloadtype2str(hdr->next_payload), hdr->next_payload);
offset += sizeof(hdr->next_payload) *2;
proto_tree_add_text(ntree, NullTVB, offset, sizeof(length),
"Length: %u", length);
offset += sizeof(length);
proto_tree_add_text(ntree,NullTVB, offset, sizeof(hdr->type),
"Type %s (%u)",attrtype2str(hdr->type),hdr->type);
offset += (sizeof(hdr->type) + sizeof(hdr->reserved2));
proto_tree_add_text(ntree, NullTVB, offset, sizeof(hdr->identifier),
"Identifier: %u", pntohs(&hdr->identifier));
offset += sizeof(hdr->identifier);
slength -= sizeof(*hdr);
while(slength>0) {
guint16 type = pntohs(pd + offset) & 0x7fff;
guint16 val_len = pntohs(pd + offset + 2);
if(pd[offset] & 0x80) {
proto_tree_add_text(ntree, NullTVB, offset, 4,
"%s (%u)",cfgattrident2str(type),val_len);
offset += 4;
slength -= 4;
}
else {
guint pack_len = 4 + val_len;
proto_tree_add_text(ntree, NullTVB, offset, 4,
"%s (%se)", cfgattrident2str(type), num2str(pd + offset + 4, val_len));
offset += pack_len;
slength -= pack_len;
}
}
if (hdr->next_payload < NUM_LOAD_TYPES) {
if (hdr->next_payload == LOAD_TYPE_TRANSFORM)
dissect_transform(pd, offset, fd, tree, 0); /* XXX - protocol ID? */
else
(*strfuncs[hdr->next_payload].func)(pd, offset, fd, tree);
}
else
old_dissect_data(pd, offset, fd, tree);
}
static const char *
payloadtype2str(guint8 type) {
if (type < NUM_LOAD_TYPES) return strfuncs[type].str;
if (type < 128) return "RESERVED";
if (type < 256) return "Private USE";
return "Huh? You should never see this! Shame on you!";
}
static const char *
exchtype2str(guint8 type) {
#define NUM_EXCHSTRS 7
static const char * exchstrs[NUM_EXCHSTRS] = {
"NONE",
"Base",
"Identity Protection (Main Mode)",
"Authentication Only",
"Aggressive",
"Informational",
"Transaction (Config Mode)"
};
if (type < NUM_EXCHSTRS) return exchstrs[type];
if (type < 32) return "ISAKMP Future Use";
switch (type) {
case 32:
return "Quick Mode";
case 33:
return "New Group Mode";
}
if (type < 240) return "DOI Specific Use";
if (type < 256) return "Private Use";
return "Huh? You should never see this! Shame on you!";
}
static const char *
doitype2str(guint32 type) {
if (type == 1) return "IPSEC";
return "Unknown DOI Type";
}
static const char *
msgtype2str(guint16 type) {
#define NUM_PREDEFINED 31
static const char *msgs[NUM_PREDEFINED] = {
"<UNKNOWN>",
"INVALID-PAYLOAD-TYPE",
"DOI-NOT-SUPPORTED",
"SITUATION-NOT-SUPPORTED",
"INVALID-COOKIE",
"INVALID-MAJOR-VERSION",
"INVALID-MINOR-VERSION",
"INVALID-EXCHANGE-TYPE",
"INVALID-FLAGS",
"INVALID-MESSAGE-ID",
"INVALID-PROTOCOL-ID",
"INVALID-SPI",
"INVALID-TRANSFORM-ID",
"ATTRIBUTES-NOT-SUPPORTED",
"NO-PROPOSAL-CHOSEN",
"BAD-PROPOSAL-SYNTAX",
"PAYLOAD-MALFORMED",
"INVALID-KEY-INFORMATION",
"INVALID-ID-INFORMATION",
"INVALID-CERT-ENCODING",
"INVALID-CERTIFICATE",
"CERT-TYPE-UNSUPPORTED",
"INVALID-CERT-AUTHORITY",
"INVALID-HASH-INFORMATION",
"AUTHENTICATION-FAILED",
"INVALID-SIGNATURE",
"ADDRESS-NOTIFICATION",
"NOTIFY-SA-LIFETIME",
"CERTIFICATE-UNAVAILABLE",
"UNSUPPORTED-EXCHANGE-TYPE",
"UNEQUAL-PAYLOAD-LENGTHS"
};
if (type < NUM_PREDEFINED) return msgs[type];
if (type < 8192) return "RESERVED (Future Use)";
if (type < 16384) return "Private Use";
if (type < 16385) return "CONNECTED";
if (type < 24576) return "RESERVED (Future Use) - status";
if (type < 24577) return "RESPONDER-LIFETIME";
if (type < 24578) return "REPLAY-STATUS";
if (type < 24579) return "INITIAL-CONTACT";
if (type < 32768) return "DOI-specific codes";
if (type < 40960) return "Private Use - status";
if (type < 65535) return "RESERVED (Future Use) - status (2)";
return "Huh? You should never see this! Shame on you!";
}
static const char *
situation2str(guint32 type) {
#define SIT_MSG_NUM 1024
#define SIT_IDENTITY 0x01
#define SIT_SECRECY 0x02
#define SIT_INTEGRITY 0x04
static char msg[SIT_MSG_NUM];
int n = 0;
char * sep = "";
if (type & SIT_IDENTITY) {
n += snprintf(msg, SIT_MSG_NUM-n, "%sIDENTITY", sep);
sep = " & ";
}
if (type & SIT_SECRECY) {
n += snprintf(msg, SIT_MSG_NUM-n, "%sSECRECY", sep);
sep = " & ";
}
if (type & SIT_INTEGRITY) {
n += snprintf(msg, SIT_MSG_NUM-n, "%sINTEGRITY", sep);
sep = " & ";
}
return msg;
}
static const char *
value2str(int ike_p1, guint16 att_type, guint16 value) {
if (value == 0) return "RESERVED";
if (!ike_p1) {
switch (att_type) {
case 1:
switch (value) {
case 1: return "Seconds";
case 2: return "Kilobytes";
default: return "UNKNOWN-SA-VALUE";
}
case 2:
return "Duration-Value";
case 3:
return "Group-Value";
case 4:
switch (value) {
case 1: return "Tunnel";
case 2: return "Transport";
default: return "UNKNOWN-ENCAPSULATION-VALUE";
}
case 5:
switch (value) {
case 1: return "HMAC-MD5";
case 2: return "HMAC-SHA";
case 3: return "DES-MAC";
case 4: return "KPDK";
case 5: return "HMAC-SHA2-256";
case 6: return "HMAC-SHA2-384";
case 7: return "HMAC-SHA2-512";
default: return "UNKNOWN-AUTHENTICATION-VALUE";
}
case 6:
return "Key-Length";
case 7:
return "Key-Rounds";
case 8:
return "log2-size";
default: return "UNKNOWN-ATTRIBUTE-TYPE";
}
}
else {
switch (att_type) {
case 1:
switch (value) {
case 1: return "DES-CBC";
case 2: return "IDEA-CBC";
case 3: return "BLOWFISH-CBC";
case 4: return "RC5-R16-B64-CBC";
case 5: return "3DES-CBC";
case 6: return "CAST-CBC";
case 7: return "AES-CBC";
default: return "UNKNOWN-ENCRYPTION-ALG";
}
case 2:
switch (value) {
case 1: return "MD5";
case 2: return "SHA";
case 3: return "TIGER";
case 4: return "SHA2-256";
case 5: return "SHA2-384";
case 6: return "SHA2-512";
default: return "UNKNOWN-HASH-ALG";
}
case 3:
switch (value) {
case 1: return "PSK";
case 2: return "DSS-SIG";
case 3: return "RSA-SIG";
case 4: return "RSA-ENC";
case 5: return "RSA-Revised-ENC";
case 64221: return "HybridInitRSA";
case 64222: return "HybridRespRSA";
case 64223: return "HybridInitDSS";
case 64224: return "HybridRespDSS";
case 65001: return "XAUTHInitPreShared";
case 65002: return "XAUTHRespPreShared";
case 65003: return "XAUTHInitDSS";
case 65004: return "XAUTHRespDSS";
case 65005: return "XAUTHInitRSA";
case 65006: return "XAUTHRespRSA";
case 65007: return "XAUTHInitRSAEncryption";
case 65008: return "XAUTHRespRSAEncryption";
case 65009: return "XAUTHInitRSARevisedEncryption";
case 65010: return "XAUTHRespRSARevisedEncryption";
default: return "UNKNOWN-AUTH-METHOD";
}
case 4:
case 6:
case 7:
case 8:
case 9:
case 10:
case 16:
return "Group-Value";
case 5:
switch (value) {
case 1: return "MODP";
case 2: return "ECP";
case 3: return "EC2N";
default: return "UNKNOWN-GROUPT-TYPE";
}
case 11:
switch (value) {
case 1: return "Seconds";
case 2: return "Kilobytes";
default: return "UNKNOWN-SA-VALUE";
}
case 12:
return "Duration-Value";
case 13:
return "PRF-Value";
case 14:
return "Key-Length";
case 15:
return "Field-Size";
default: return "UNKNOWN-ATTRIBUTE-TYPE";
}
}
}
static const char *
attrtype2str(guint8 type) {
switch (type) {
case 0: return "Reserved";
case 1: return "ISAKMP_CFG_REQUEST";
case 2: return "ISAKMP_CFG_REPLY";
case 3: return "ISAKMP_CFG_SET";
case 4: return "ISAKMP_CFG_ACK";
}
if(type < 127)
return "Future use";
return "Private use";
}
static const char *
cfgattrident2str(guint16 ident) {
#define NUM_ATTR_DEFINED 12
static const char *msgs[NUM_PREDEFINED] = {
"RESERVED",
"INTERNAL_IP4_ADDRESS",
"INTERNAL_IP4_NETMASK",
"INTERNAL_IP4_DNS",
"INTERNAL_IP4_NBNS",
"INTERNAL_ADDRESS_EXPIREY",
"INTERNAL_IP4_DHCP",
"APPLICATION_VERSION"
"INTERNAL_IP6_ADDRESS",
"INTERNAL_IP6_NETMASK",
"INTERNAL_IP6_DNS",
"INTERNAL_IP6_NBNS",
"INTERNAL_IP6_DHCP",
};
if(ident < NUM_ATTR_DEFINED)
return msgs[ident];
if(ident < 16383)
return "Future use";
switch(ident) {
case 16520: return "XAUTH_TYPE";
case 16521: return "XAUTH_USER_NAME";
case 16522: return "XAUTH_USER_PASSWORD";
case 16523: return "XAUTH_PASSCODE";
case 16524: return "XAUTH_MESSAGE";
case 16525: return "XAUTH_CHALLANGE";
case 16526: return "XAUTH_DOMAIN";
case 16527: return "XAUTH_STATUS";
default: return "Private use";
}
}
static const char *
num2str(const guint8 *pd, guint16 len) {
#define NUMSTR_LEN 1024
static char numstr[NUMSTR_LEN];
switch (len) {
case 1:
snprintf(numstr, NUMSTR_LEN, "%u", *pd);
break;
case 2:
snprintf(numstr, NUMSTR_LEN, "%u", pntohs(pd));
break;
case 3:
snprintf(numstr, NUMSTR_LEN, "%u", pntohl(pd) & 0x0fff);
break;
case 4:
snprintf(numstr, NUMSTR_LEN, "%u", pntohl(pd));
break;
default:
snprintf(numstr, NUMSTR_LEN, "<too big>");
}
return numstr;
}
void
proto_register_isakmp(void)
{
/* static hf_register_info hf[] = {
{ &variable,
{ "Name", "isakmp.abbreviation", TYPE, VALS_POINTER }},
};*/
static gint *ett[] = {
&ett_isakmp,
&ett_isakmp_flags,
&ett_isakmp_payload,
};
proto_isakmp = proto_register_protocol("Internet Security Association and Key Management Protocol",
"ISAKMP", "isakmp");
/* proto_register_field_array(proto_isakmp, hf, array_length(hf));*/
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_isakmp(void)
{
old_dissector_add("udp.port", UDP_PORT_ISAKMP, dissect_isakmp,
proto_isakmp);
}
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