166 lines
4.6 KiB
C
166 lines
4.6 KiB
C
/* packet-bpkmrsp.c
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* Routines for Baseline Privacy Key Management Response dissection
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* Copyright 2002, Anand V. Narwani <anand[AT]narwani.org>
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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 1998 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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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <epan/packet.h>
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/* Initialize the protocol and registered fields */
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static int proto_docsis_bpkmrsp = -1;
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static int hf_docsis_bpkmrsp_code = -1;
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static int hf_docsis_bpkmrsp_length = -1;
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static int hf_docsis_bpkmrsp_ident = -1;
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static const value_string code_field_vals[] = {
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{0, "Reserved"},
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{1, "Reserved"},
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{2, "Reserved"},
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{3, "Reserved"},
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{4, "Auth Response"},
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{5, "Auth Reply"},
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{6, "Auth Reject"},
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{7, "Key Response"},
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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, "Authent Info"},
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{13, "Map Response"},
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{14, "Map Reply"},
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{15, "Map Reject"},
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{0, NULL},
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};
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/* Initialize the subtree pointers */
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static gint ett_docsis_bpkmrsp = -1;
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static dissector_handle_t attrs_handle;
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/* Code to actually dissect the packets */
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static void
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dissect_bpkmrsp (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree)
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{
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proto_item *it;
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proto_tree *bpkmrsp_tree;
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guint8 code;
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tvbuff_t *attrs_tvb;
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code = tvb_get_guint8 (tvb, 0);
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col_add_fstr (pinfo->cinfo, COL_INFO, "BPKM Response (%s)",
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val_to_str (code, code_field_vals, "Unknown code %u"));
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if (tree)
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{
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it =
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proto_tree_add_protocol_format (tree, proto_docsis_bpkmrsp, tvb, 0, -1,
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"BPKM Response Message");
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bpkmrsp_tree = proto_item_add_subtree (it, ett_docsis_bpkmrsp);
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proto_tree_add_item (bpkmrsp_tree, hf_docsis_bpkmrsp_code, tvb, 0, 1,
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FALSE);
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proto_tree_add_item (bpkmrsp_tree, hf_docsis_bpkmrsp_ident, tvb, 1, 1,
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FALSE);
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proto_tree_add_item (bpkmrsp_tree, hf_docsis_bpkmrsp_length, tvb, 2, 2,
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FALSE);
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}
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/* Code to Call subdissector */
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attrs_tvb = tvb_new_subset_remaining (tvb, 4);
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call_dissector (attrs_handle, attrs_tvb, pinfo, tree);
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}
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/* Register the protocol with Wireshark */
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/* this format is require because a script is used to build the C function
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that calls all the protocol registration.
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*/
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void
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proto_register_docsis_bpkmrsp (void)
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{
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/* Setup list of header fields See Section 1.6.1 for details*/
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static hf_register_info hf[] = {
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{&hf_docsis_bpkmrsp_code,
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{"BPKM Code", "docsis_bpkmrsp.code",
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FT_UINT8, BASE_DEC, VALS (code_field_vals), 0x0,
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"BPKM Response Message", HFILL}
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},
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{&hf_docsis_bpkmrsp_ident,
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{"BPKM Identifier", "docsis_bpkmrsp.ident",
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FT_UINT8, BASE_DEC, NULL, 0x0,
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NULL, HFILL}
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},
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{&hf_docsis_bpkmrsp_length,
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{"BPKM Length", "docsis_bpkmrsp.length",
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FT_UINT16, BASE_DEC, NULL, 0x0,
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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[] = {
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&ett_docsis_bpkmrsp,
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};
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/* Register the protocol name and description */
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proto_docsis_bpkmrsp =
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proto_register_protocol
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("DOCSIS Baseline Privacy Key Management Response", "DOCSIS BPKM-RSP",
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"docsis_bpkmrsp");
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/* Required function calls to register the header fields and subtrees used */
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proto_register_field_array (proto_docsis_bpkmrsp, hf, array_length (hf));
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proto_register_subtree_array (ett, array_length (ett));
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register_dissector ("docsis_bpkmrsp", dissect_bpkmrsp,
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proto_docsis_bpkmrsp);
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}
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/* If this dissector uses sub-dissector registration add a registration routine.
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This format is required because a script is used to find these routines and
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create the code that calls these routines.
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*/
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void
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proto_reg_handoff_docsis_bpkmrsp (void)
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{
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dissector_handle_t docsis_bpkmrsp_handle;
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docsis_bpkmrsp_handle = find_dissector ("docsis_bpkmrsp");
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attrs_handle = find_dissector ("docsis_bpkmattr");
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dissector_add_uint ("docsis_mgmt", 0x0D, docsis_bpkmrsp_handle);
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}
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