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/* msg_pkm.c
* WiMax MAC Management PKM-REQ/RSP Messages decoders
*
* Copyright (c) 2007 by Intel Corporation.
*
* Author: Lu Pan <lu.pan@intel.com>
*
* $Id$
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1999 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.
*/
/*
#define DEBUG // for debug only
*/
/* Include files */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "moduleinfo.h"
#include <glib.h>
#include <epan/packet.h>
#include <epan/prefs.h>
#include "wimax_tlv.h"
#include "wimax_mac.h"
#include "wimax_utils.h"
/* forward reference */
void proto_register_mac_mgmt_msg_pkm(void);
void dissect_mac_mgmt_msg_pkm_req_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
void dissect_mac_mgmt_msg_pkm_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
static gint proto_mac_mgmt_msg_pkm_decoder = -1;
static gint ett_mac_mgmt_msg_pkm_req_decoder = -1;
static gint ett_mac_mgmt_msg_pkm_rsp_decoder = -1;
/* Setup protocol subtree array */
static gint *ett_pkm[] =
{
&ett_mac_mgmt_msg_pkm_req_decoder,
&ett_mac_mgmt_msg_pkm_rsp_decoder,
};
static const value_string vals_pkm_msg_code[] =
{
{3, "SA ADD"},
{4, "Auth Request"},
{5, "Auth Reply"},
{6, "Auth Reject"},
{7, "Key Request"},
{8, "Key Reply"},
{9, "Key Reject"},
{10, "Auth Invalid"},
{11, "TEK Invalid"},
{12, "Auth Info"},
{13, "PKMv2 RSA-Request"},
{14, "PKMv2 RSA-Reply"},
{15, "PKMv2 RSA-Reject"},
{16, "PKMv2 RSA-Acknowledgement"},
{17, "PKMv2 EAP Start"},
{18, "PKMv2 EAP-Transfer"},
{19, "PKMv2 Authenticated EAP-Transfer"},
{20, "PKMv2 SA TEK Challenge"},
{21, "PKMv2 SA TEK Request"},
{22, "PKMv2 SA TEK Response"},
{23, "PKMv2 Key-Request"},
{24, "PKMv2 Key-Reply"},
{25, "PKMv2 Key-Reject"},
{26, "PKMv2 SA-Addition"},
{27, "PKMv2 TEK-Invalid"},
{28, "PKMv2 Group-Key-Update-Command"},
{29, "PKMv2 EAP Complete"},
{30, "PKMv2 Authenticated EAP Start"},
{ 0, NULL}
};
/* fix fields */
static gint hf_pkm_req_message_type = -1;
static gint hf_pkm_rsp_message_type = -1;
static gint hf_pkm_msg_code = -1;
static gint hf_pkm_msg_pkm_id = -1;
/* PKM display */
static hf_register_info hf_pkm[] =
{
{
&hf_pkm_msg_code,
{"Code", "wmx.pkm.msg_code",FT_UINT8, BASE_DEC, VALS(vals_pkm_msg_code),0x0, "", HFILL}
},
{
&hf_pkm_msg_pkm_id,
{"PKM Identifier", "wmx.pkm.msg_pkm_identifier",FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL}
},
{
&hf_pkm_req_message_type,
{"MAC Management Message Type", "wmx.macmgtmsgtype.pkm_req", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL}
},
{
&hf_pkm_rsp_message_type,
{"MAC Management Message Type", "wmx.macmgtmsgtype.pkm_rsp", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL}
}
};
/* Register Wimax Mac PKM-REQ/RSP Messages Dissectors */
void proto_register_mac_mgmt_msg_pkm(void)
{
if (proto_mac_mgmt_msg_pkm_decoder == -1)
{
proto_mac_mgmt_msg_pkm_decoder = proto_register_protocol (
"WiMax PKM-REQ/RSP Messages", /* name */
"WiMax PKM-REQ/RSP (pkm)", /* short name */
"wmx.pkm" /* abbrev */
);
proto_register_field_array(proto_mac_mgmt_msg_pkm_decoder, hf_pkm, array_length(hf_pkm));
proto_register_subtree_array(ett_pkm, array_length(ett_pkm));
}
}
/* Wimax Mac PKM-REQ Message Dissector */
void dissect_mac_mgmt_msg_pkm_req_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
guint offset = 0;
guint tvb_len, payload_type, length;
proto_item *pkm_item = NULL;
proto_tree *pkm_tree = NULL;
/* Ensure the right payload type */
payload_type = tvb_get_guint8(tvb, offset);
if(payload_type != MAC_MGMT_MSG_PKM_REQ)
{
return;
}
if(tree)
{ /* we are being asked for details */
/* Get the tvb reported length */
tvb_len = tvb_reported_length(tvb);
/* display MAC payload type PKM-REQ */
pkm_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_pkm_decoder, tvb, offset, tvb_len, "Privacy Key Management Request (PKM-REQ) (%u bytes)", tvb_len);
/* add MAC PKM subtree */
pkm_tree = proto_item_add_subtree(pkm_item, ett_mac_mgmt_msg_pkm_req_decoder);
/* Decode and display the Privacy Key Management Request Message (PKM-REQ) (table 24) */
/* display the Message Type */
proto_tree_add_item(pkm_tree, hf_pkm_req_message_type, tvb, offset, 1, FALSE);
/* set the offset for the PKM Code */
offset++;
/* display the PKM Code */
proto_tree_add_item(pkm_tree, hf_pkm_msg_code, tvb, offset, 1, FALSE);
/* set the offset for the PKM ID */
offset++;
/* display the PKM ID */
proto_tree_add_item(pkm_tree, hf_pkm_msg_pkm_id, tvb, offset, 1, FALSE);
/* set the offset for the TLV Encoded info */
offset++;
/* process the PKM TLV Encoded Attributes */
length = tvb_len - offset;
wimax_pkm_tlv_encoded_attributes_decoder(tvb_new_subset(tvb, offset, length, length), pinfo, pkm_tree);
}
}
/* Wimax Mac PKM-RSP Message Dissector */
void dissect_mac_mgmt_msg_pkm_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
guint offset = 0;
guint tvb_len, payload_type, length;
proto_item *pkm_item = NULL;
proto_tree *pkm_tree = NULL;
/* Ensure the right payload type */
payload_type = tvb_get_guint8(tvb, offset);
if(payload_type != MAC_MGMT_MSG_PKM_RSP)
{
return;
}
if(tree)
{ /* we are being asked for details */
/* Get the tvb reported length */
tvb_len = tvb_reported_length(tvb);
/* display MAC payload type PKM-RSP */
pkm_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_pkm_decoder, tvb, offset, tvb_len, "Privacy Key Management Response (PKM-RSP) (%u bytes)", tvb_len);
/* add MAC PKM subtree */
pkm_tree = proto_item_add_subtree(pkm_item, ett_mac_mgmt_msg_pkm_rsp_decoder);
/* Decode and display the Privacy Key Management Response (PKM-RSP) (table 25) */
/* display the Message Type */
proto_tree_add_item(pkm_tree, hf_pkm_rsp_message_type, tvb, offset, 1, FALSE);
/* set the offset for the PKM Code */
offset++;
/* display the PKM Code */
proto_tree_add_item(pkm_tree, hf_pkm_msg_code, tvb, offset, 1, FALSE);
/* set the offset for the PKM ID */
offset++;
/* display the PKM ID */
proto_tree_add_item(pkm_tree, hf_pkm_msg_pkm_id, tvb, offset, 1, FALSE);
/* set the offset for the TLV Encoded info */
offset++;
/* process the PKM TLV Encoded Attributes */
length = tvb_len - offset;
wimax_pkm_tlv_encoded_attributes_decoder(tvb_new_subset(tvb, offset, length, length), pinfo, pkm_tree);
}
}
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