213 lines
6.6 KiB
C
213 lines
6.6 KiB
C
/* msg_pkm.c
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* WiMax MAC Management PKM-REQ/RSP Messages decoders
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*
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* Copyright (c) 2007 by Intel Corporation.
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*
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* Author: Lu Pan <lu.pan@intel.com>
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1999 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*
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#define DEBUG // for debug only
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*/
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/* Include files */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <glib.h>
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#include <epan/packet.h>
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#include "wimax_tlv.h"
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#include "wimax_mac.h"
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#include "wimax_utils.h"
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static gint proto_mac_mgmt_msg_pkm_decoder = -1;
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static gint ett_mac_mgmt_msg_pkm_req_decoder = -1;
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static gint ett_mac_mgmt_msg_pkm_rsp_decoder = -1;
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static const value_string vals_pkm_msg_code[] =
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{
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{3, "SA ADD"},
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{4, "Auth Request"},
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{5, "Auth Reply"},
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{6, "Auth Reject"},
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{7, "Key Request"},
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{8, "Key Reply"},
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{9, "Key Reject"},
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{10, "Auth Invalid"},
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{11, "TEK Invalid"},
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{12, "Auth Info"},
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{13, "PKMv2 RSA-Request"},
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{14, "PKMv2 RSA-Reply"},
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{15, "PKMv2 RSA-Reject"},
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{16, "PKMv2 RSA-Acknowledgement"},
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{17, "PKMv2 EAP Start"},
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{18, "PKMv2 EAP-Transfer"},
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{19, "PKMv2 Authenticated EAP-Transfer"},
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{20, "PKMv2 SA TEK Challenge"},
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{21, "PKMv2 SA TEK Request"},
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{22, "PKMv2 SA TEK Response"},
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{23, "PKMv2 Key-Request"},
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{24, "PKMv2 Key-Reply"},
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{25, "PKMv2 Key-Reject"},
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{26, "PKMv2 SA-Addition"},
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{27, "PKMv2 TEK-Invalid"},
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{28, "PKMv2 Group-Key-Update-Command"},
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{29, "PKMv2 EAP Complete"},
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{30, "PKMv2 Authenticated EAP Start"},
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{ 0, NULL}
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};
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/* fix fields */
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static gint hf_pkm_req_message_type = -1;
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static gint hf_pkm_rsp_message_type = -1;
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static gint hf_pkm_msg_code = -1;
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static gint hf_pkm_msg_pkm_id = -1;
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/* Wimax Mac PKM-REQ Message Dissector */
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void dissect_mac_mgmt_msg_pkm_req_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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guint offset = 0;
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guint tvb_len, payload_type, length;
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proto_item *pkm_item = NULL;
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proto_tree *pkm_tree = NULL;
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/* Ensure the right payload type */
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payload_type = tvb_get_guint8(tvb, offset);
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if(payload_type != MAC_MGMT_MSG_PKM_REQ)
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{
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return;
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}
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if(tree)
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{ /* we are being asked for details */
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/* Get the tvb reported length */
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tvb_len = tvb_reported_length(tvb);
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/* display MAC payload type PKM-REQ */
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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);
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/* add MAC PKM subtree */
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pkm_tree = proto_item_add_subtree(pkm_item, ett_mac_mgmt_msg_pkm_req_decoder);
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/* Decode and display the Privacy Key Management Request Message (PKM-REQ) (table 24) */
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/* display the Message Type */
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proto_tree_add_item(pkm_tree, hf_pkm_req_message_type, tvb, offset, 1, FALSE);
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/* set the offset for the PKM Code */
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offset++;
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/* display the PKM Code */
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proto_tree_add_item(pkm_tree, hf_pkm_msg_code, tvb, offset, 1, FALSE);
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/* set the offset for the PKM ID */
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offset++;
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/* display the PKM ID */
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proto_tree_add_item(pkm_tree, hf_pkm_msg_pkm_id, tvb, offset, 1, FALSE);
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/* set the offset for the TLV Encoded info */
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offset++;
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/* process the PKM TLV Encoded Attributes */
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length = tvb_len - offset;
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wimax_pkm_tlv_encoded_attributes_decoder(tvb_new_subset(tvb, offset, length, length), pinfo, pkm_tree);
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}
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}
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/* Wimax Mac PKM-RSP Message Dissector */
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void dissect_mac_mgmt_msg_pkm_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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guint offset = 0;
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guint tvb_len, payload_type, length;
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proto_item *pkm_item = NULL;
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proto_tree *pkm_tree = NULL;
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/* Ensure the right payload type */
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payload_type = tvb_get_guint8(tvb, offset);
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if(payload_type != MAC_MGMT_MSG_PKM_RSP)
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{
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return;
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}
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if(tree)
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{ /* we are being asked for details */
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/* Get the tvb reported length */
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tvb_len = tvb_reported_length(tvb);
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/* display MAC payload type PKM-RSP */
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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);
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/* add MAC PKM subtree */
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pkm_tree = proto_item_add_subtree(pkm_item, ett_mac_mgmt_msg_pkm_rsp_decoder);
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/* Decode and display the Privacy Key Management Response (PKM-RSP) (table 25) */
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/* display the Message Type */
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proto_tree_add_item(pkm_tree, hf_pkm_rsp_message_type, tvb, offset, 1, FALSE);
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/* set the offset for the PKM Code */
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offset++;
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/* display the PKM Code */
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proto_tree_add_item(pkm_tree, hf_pkm_msg_code, tvb, offset, 1, FALSE);
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/* set the offset for the PKM ID */
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offset++;
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/* display the PKM ID */
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proto_tree_add_item(pkm_tree, hf_pkm_msg_pkm_id, tvb, offset, 1, FALSE);
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/* set the offset for the TLV Encoded info */
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offset++;
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/* process the PKM TLV Encoded Attributes */
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length = tvb_len - offset;
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wimax_pkm_tlv_encoded_attributes_decoder(tvb_new_subset(tvb, offset, length, length), pinfo, pkm_tree);
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}
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}
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/* Register Wimax Mac PKM-REQ/RSP Messages Dissectors */
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void proto_register_mac_mgmt_msg_pkm(void)
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{
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/* PKM display */
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static hf_register_info hf_pkm[] =
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{
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{
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&hf_pkm_msg_code,
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{"Code", "wmx.pkm.msg_code",FT_UINT8, BASE_DEC, VALS(vals_pkm_msg_code),0x0, NULL, HFILL}
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},
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{
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&hf_pkm_msg_pkm_id,
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{"PKM Identifier", "wmx.pkm.msg_pkm_identifier",FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}
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},
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{
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&hf_pkm_req_message_type,
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{"MAC Management Message Type", "wmx.macmgtmsgtype.pkm_req", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}
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},
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{
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&hf_pkm_rsp_message_type,
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{"MAC Management Message Type", "wmx.macmgtmsgtype.pkm_rsp", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}
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}
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};
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/* Setup protocol subtree array */
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static gint *ett_pkm[] =
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{
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&ett_mac_mgmt_msg_pkm_req_decoder,
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&ett_mac_mgmt_msg_pkm_rsp_decoder,
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};
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proto_mac_mgmt_msg_pkm_decoder = proto_register_protocol (
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"WiMax PKM-REQ/RSP Messages", /* name */
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"WiMax PKM-REQ/RSP (pkm)", /* short name */
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"wmx.pkm" /* abbrev */
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);
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proto_register_field_array(proto_mac_mgmt_msg_pkm_decoder, hf_pkm, array_length(hf_pkm));
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proto_register_subtree_array(ett_pkm, array_length(ett_pkm));
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}
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