plugins/epan/wimax/msg_pkm.c

   1 /* msg_pkm.c
   2  * WiMax MAC Management PKM-REQ/RSP Messages decoders
   3  *
   4  * Copyright (c) 2007 by Intel Corporation.
   5  *
   6  * Author: Lu Pan <lu.pan@intel.com>
   7  *
   8  * Wireshark - Network traffic analyzer
   9  * By Gerald Combs <gerald@wireshark.org>
  10  * Copyright 1999 Gerald Combs
  11  *
  12  * SPDX-License-Identifier: GPL-2.0-or-later
  13  */
  14
  15 #if 0
  16 #define DEBUG   /* for debug only */
  17 #endif
  18
  19 /* Include files */
  20
  21 #include "config.h"
  22
  23 #include <epan/packet.h>
  24 #include "wimax_tlv.h"
  25 #include "wimax_mac.h"
  26 #include "wimax_utils.h"
  27
  28 void proto_register_mac_mgmt_msg_pkm(void);
  29 void proto_reg_handoff_mac_mgmt_msg_pkm(void);
  30
  31 static dissector_handle_t mac_mgmt_msg_pkm_req_handle;
  32 static dissector_handle_t mac_mgmt_msg_pkm_rsp_handle;
  33
  34
  35 static int proto_mac_mgmt_msg_pkm_decoder;
  36 static int ett_mac_mgmt_msg_pkm_req_decoder;
  37 static int ett_mac_mgmt_msg_pkm_rsp_decoder;
  38
  39 static const value_string vals_pkm_msg_code[] =
  40 {
  41         { 3, "SA ADD"},
  42         { 4, "Auth Request"},
  43         { 5, "Auth Reply"},
  44         { 6, "Auth Reject"},
  45         { 7, "Key Request"},
  46         { 8, "Key Reply"},
  47         { 9, "Key Reject"},
  48         {10, "Auth Invalid"},
  49         {11, "TEK Invalid"},
  50         {12, "Auth Info"},
  51         {13, "PKMv2 RSA-Request"},
  52         {14, "PKMv2 RSA-Reply"},
  53         {15, "PKMv2 RSA-Reject"},
  54         {16, "PKMv2 RSA-Acknowledgement"},
  55         {17, "PKMv2 EAP Start"},
  56         {18, "PKMv2 EAP-Transfer"},
  57         {19, "PKMv2 Authenticated EAP-Transfer"},
  58         {20, "PKMv2 SA TEK Challenge"},
  59         {21, "PKMv2 SA TEK Request"},
  60         {22, "PKMv2 SA TEK Response"},
  61         {23, "PKMv2 Key-Request"},
  62         {24, "PKMv2 Key-Reply"},
  63         {25, "PKMv2 Key-Reject"},
  64         {26, "PKMv2 SA-Addition"},
  65         {27, "PKMv2 TEK-Invalid"},
  66         {28, "PKMv2 Group-Key-Update-Command"},
  67         {29, "PKMv2 EAP Complete"},
  68         {30, "PKMv2 Authenticated EAP Start"},
  69         { 0,                            NULL}
  70 };
  71
  72 /* fix fields */
  73 static int hf_pkm_msg_code;
  74 static int hf_pkm_msg_pkm_id;
  75
  76
  77 /* Wimax Mac PKM-REQ Message Dissector */
  78 static int dissect_mac_mgmt_msg_pkm_req_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
  79 {
  80         unsigned offset = 0;
  81         proto_item *pkm_item;
  82         proto_tree *pkm_tree;
  83
  84         /* display MAC payload type PKM-REQ */
  85         pkm_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_pkm_decoder, tvb, offset, -1, "Privacy Key Management Request (PKM-REQ)");
  86         /* add MAC PKM subtree */
  87         pkm_tree = proto_item_add_subtree(pkm_item, ett_mac_mgmt_msg_pkm_req_decoder);
  88         /* Decode and display the Privacy Key Management Request Message (PKM-REQ) (table 24) */
  89         /* display the PKM Code */
  90         proto_tree_add_item(pkm_tree, hf_pkm_msg_code, tvb, offset, 1, ENC_BIG_ENDIAN);
  91         /* set the offset for the PKM ID */
  92         offset++;
  93         /* display the PKM ID */
  94         proto_tree_add_item(pkm_tree, hf_pkm_msg_pkm_id, tvb, offset, 1, ENC_BIG_ENDIAN);
  95         /* set the offset for the TLV Encoded info */
  96         offset++;
  97         wimax_pkm_tlv_encoded_attributes_decoder(tvb_new_subset_remaining(tvb, offset), pinfo, pkm_tree);
  98         return tvb_captured_length(tvb);
  99 }
 100
 101 /* Wimax Mac PKM-RSP Message Dissector */
 102 static int dissect_mac_mgmt_msg_pkm_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
 103 {
 104         unsigned offset = 0;
 105         proto_item *pkm_item;
 106         proto_tree *pkm_tree;
 107
 108         /* display MAC payload type PKM-RSP */
 109         pkm_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_pkm_decoder, tvb, offset, -1, "Privacy Key Management Response (PKM-RSP)");
 110         /* add MAC PKM subtree */
 111         pkm_tree = proto_item_add_subtree(pkm_item, ett_mac_mgmt_msg_pkm_rsp_decoder);
 112         /* Decode and display the Privacy Key Management Response (PKM-RSP) (table 25) */
 113         /* display the PKM Code */
 114         proto_tree_add_item(pkm_tree, hf_pkm_msg_code, tvb, offset, 1, ENC_BIG_ENDIAN);
 115         /* set the offset for the PKM ID */
 116         offset++;
 117         /* display the PKM ID */
 118         proto_tree_add_item(pkm_tree, hf_pkm_msg_pkm_id, tvb, offset, 1, ENC_BIG_ENDIAN);
 119         /* set the offset for the TLV Encoded info */
 120         offset++;
 121         /* process the PKM TLV Encoded Attributes */
 122         wimax_pkm_tlv_encoded_attributes_decoder(tvb_new_subset_remaining(tvb, offset), pinfo, pkm_tree);
 123         return tvb_captured_length(tvb);
 124 }
 125
 126 /* Register Wimax Mac PKM-REQ/RSP Messages Dissectors */
 127 void proto_register_mac_mgmt_msg_pkm(void)
 128 {
 129         /* PKM display */
 130         static hf_register_info hf_pkm[] =
 131         {
 132                 {
 133                         &hf_pkm_msg_code,
 134                         {"Code", "wmx.pkm.msg_code",FT_UINT8, BASE_DEC, VALS(vals_pkm_msg_code),0x0, NULL, HFILL}
 135                 },
 136                 {
 137                         &hf_pkm_msg_pkm_id,
 138                         {"PKM Identifier", "wmx.pkm.msg_pkm_identifier",FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}
 139                 },
 140         };
 141
 142         /* Setup protocol subtree array */
 143         static int *ett_pkm[] =
 144                 {
 145                         &ett_mac_mgmt_msg_pkm_req_decoder,
 146                         &ett_mac_mgmt_msg_pkm_rsp_decoder,
 147                 };
 148
 149         proto_mac_mgmt_msg_pkm_decoder = proto_register_protocol (
 150                 "WiMax PKM-REQ/RSP Messages", /* name       */
 151                 "WiMax PKM-REQ/RSP (pkm)",    /* short name */
 152                 "wmx.pkm"                     /* abbrev     */
 153                 );
 154
 155         proto_register_field_array(proto_mac_mgmt_msg_pkm_decoder, hf_pkm, array_length(hf_pkm));
 156         proto_register_subtree_array(ett_pkm, array_length(ett_pkm));
 157         mac_mgmt_msg_pkm_req_handle = register_dissector("mac_mgmt_msg_pkm_req_handler", dissect_mac_mgmt_msg_pkm_req_decoder, proto_mac_mgmt_msg_pkm_decoder);
 158         mac_mgmt_msg_pkm_rsp_handle = register_dissector("mac_mgmt_msg_pkm_rsp_handler", dissect_mac_mgmt_msg_pkm_rsp_decoder, proto_mac_mgmt_msg_pkm_decoder);
 159 }
 160
 161 void proto_reg_handoff_mac_mgmt_msg_pkm(void)
 162 {
 163         dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_PKM_REQ, mac_mgmt_msg_pkm_req_handle );
 164         dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_PKM_RSP, mac_mgmt_msg_pkm_rsp_handle );
 165 }
 166
 167 /*
 168  * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
 169  *
 170  * Local variables:
 171  * c-basic-offset: 8
 172  * tab-width: 8
 173  * indent-tabs-mode: t
 174  * End:
 175  *
 176  * vi: set shiftwidth=8 tabstop=8 noexpandtab:
 177  * :indentSize=8:tabSize=8:noTabs=false:
 178  */