2 * Routines for Baseline Privacy Key Management Request dissection
3 * Copyright 2002, Anand V. Narwani <anarwani@cisco.com>
5 * $Id: packet-bpkmreq.c,v 1.4 2002/09/10 19:07:38 guy Exp $
7 * Ethereal - Network traffic analyzer
8 * By Gerald Combs <gerald@ethereal.com>
9 * Copyright 1998 Gerald Combs
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version 2
14 * of the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
30 #include "plugins/plugin_api.h"
31 #include "plugins/plugin_api_defs.h"
32 #include "moduleinfo.h"
40 #include <epan/packet.h>
42 /* Initialize the protocol and registered fields */
43 static int proto_docsis_bpkmreq = -1;
44 static int hf_docsis_bpkmreq = -1;
45 static int hf_docsis_bpkmreq_code = -1;
46 static int hf_docsis_bpkmreq_length = -1;
47 static int hf_docsis_bpkmreq_ident = -1;
49 static const value_string code_field_vals[] = {
70 /* Initialize the subtree pointers */
71 static gint ett_docsis_bpkmreq = -1;
73 static dissector_handle_t attrs_handle;
75 /* Code to actually dissect the packets */
77 dissect_bpkmreq (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree)
81 proto_tree *bpkmreq_tree;
86 code = tvb_get_guint8 (tvb, 0);
88 if (check_col (pinfo->cinfo, COL_INFO))
90 col_clear (pinfo->cinfo, COL_INFO);
91 col_add_fstr (pinfo->cinfo, COL_INFO, "BPKM Request (%s)",
92 val_to_str (code, code_field_vals, "%s"));
98 proto_tree_add_protocol_format (tree, proto_docsis_bpkmreq, tvb, 0,
99 tvb_length_remaining (tvb, 0),
100 "BPKM Request Message");
101 bpkmreq_tree = proto_item_add_subtree (it, ett_docsis_bpkmreq);
102 proto_tree_add_item (bpkmreq_tree, hf_docsis_bpkmreq_code, tvb, 0, 1,
104 proto_tree_add_item (bpkmreq_tree, hf_docsis_bpkmreq_ident, tvb, 1, 1,
106 proto_tree_add_item (bpkmreq_tree, hf_docsis_bpkmreq_length, tvb, 2, 2,
110 /* Code to Call subdissector */
111 attrs_len = tvb_length_remaining (tvb, 4);
112 attrs_tvb = tvb_new_subset (tvb, 4, attrs_len, attrs_len);
113 call_dissector (attrs_handle, attrs_tvb, pinfo, tree);
122 /* Register the protocol with Ethereal */
124 /* this format is require because a script is used to build the C function
125 that calls all the protocol registration.
130 proto_register_docsis_bpkmreq (void)
133 /* Setup list of header fields See Section 1.6.1 for details*/
134 static hf_register_info hf[] = {
136 {"BPKM Request Message", "docsis.bpkmreq",
137 FT_BYTES, BASE_HEX, NULL, 0x0,
138 "BPKM Request Message", HFILL}
140 {&hf_docsis_bpkmreq_code,
141 {"BPKM Code", "docsis.bpkmreq.code",
142 FT_UINT8, BASE_DEC, VALS (code_field_vals), 0x0,
143 "BPKM Request Message", HFILL}
145 {&hf_docsis_bpkmreq_ident,
146 {"BPKM Identifier", "docsis.bpkmreq.ident",
147 FT_UINT8, BASE_DEC, NULL, 0x0,
148 "BPKM Identifier", HFILL}
150 {&hf_docsis_bpkmreq_length,
151 {"BPKM Length", "docsis.bpkmreq.length",
152 FT_UINT16, BASE_DEC, NULL, 0x0,
153 "BPKM Length", HFILL}
157 /* Setup protocol subtree array */
158 static gint *ett[] = {
162 /* Register the protocol name and description */
163 proto_docsis_bpkmreq =
164 proto_register_protocol ("DOCSIS Baseline Privacy Key Management Request",
165 "DOCSIS BPKM-REQ", "docsis_bpkmreq");
167 /* Required function calls to register the header fields and subtrees used */
168 proto_register_field_array (proto_docsis_bpkmreq, hf, array_length (hf));
169 proto_register_subtree_array (ett, array_length (ett));
171 register_dissector ("docsis_bpkmreq", dissect_bpkmreq,
172 proto_docsis_bpkmreq);
176 /* If this dissector uses sub-dissector registration add a registration routine.
177 This format is required because a script is used to find these routines and
178 create the code that calls these routines.
181 proto_reg_handoff_docsis_bpkmreq (void)
183 dissector_handle_t docsis_bpkmreq_handle;
185 docsis_bpkmreq_handle = find_dissector ("docsis_bpkmreq");
186 attrs_handle = find_dissector ("docsis_bpkmattr");
187 dissector_add ("docsis_mgmt", 0x0C, docsis_bpkmreq_handle);