2 * Routines for Baseline Privacy Key Management Response dissection
3 * Copyright 2002, Anand V. Narwani <anarwani@cisco.com>
5 * $Id: packet-bpkmrsp.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_bpkmrsp = -1;
44 static int hf_docsis_bpkmrsp = -1;
45 static int hf_docsis_bpkmrsp_code = -1;
46 static int hf_docsis_bpkmrsp_length = -1;
47 static int hf_docsis_bpkmrsp_ident = -1;
49 static const value_string code_field_vals[] = {
70 /* Initialize the subtree pointers */
71 static gint ett_docsis_bpkmrsp = -1;
73 static dissector_handle_t attrs_handle;
75 /* Code to actually dissect the packets */
77 dissect_bpkmrsp (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree)
81 proto_tree *bpkmrsp_tree;
87 code = tvb_get_guint8 (tvb, 0);
89 if (check_col (pinfo->cinfo, COL_INFO))
91 col_clear (pinfo->cinfo, COL_INFO);
92 col_add_fstr (pinfo->cinfo, COL_INFO, "BPKM Response (%s)",
93 val_to_str (code, code_field_vals, "%s"));
99 proto_tree_add_protocol_format (tree, proto_docsis_bpkmrsp, tvb, 0,
100 tvb_length_remaining (tvb, 0),
101 "BPKM Response Message");
102 bpkmrsp_tree = proto_item_add_subtree (it, ett_docsis_bpkmrsp);
103 proto_tree_add_item (bpkmrsp_tree, hf_docsis_bpkmrsp_code, tvb, 0, 1,
105 proto_tree_add_item (bpkmrsp_tree, hf_docsis_bpkmrsp_ident, tvb, 1, 1,
107 proto_tree_add_item (bpkmrsp_tree, hf_docsis_bpkmrsp_length, tvb, 2, 2,
111 /* Code to Call subdissector */
112 attrs_len = tvb_length_remaining (tvb, 4);
113 attrs_tvb = tvb_new_subset (tvb, 4, attrs_len, attrs_len);
114 call_dissector (attrs_handle, attrs_tvb, pinfo, tree);
123 /* Register the protocol with Ethereal */
125 /* this format is require because a script is used to build the C function
126 that calls all the protocol registration.
131 proto_register_docsis_bpkmrsp (void)
134 /* Setup list of header fields See Section 1.6.1 for details*/
135 static hf_register_info hf[] = {
137 {"BPKM Response Message", "docsis.bpkmrsp",
138 FT_BYTES, BASE_HEX, NULL, 0x0,
139 "BPKM Response Message", HFILL}
141 {&hf_docsis_bpkmrsp_code,
142 {"BPKM Code", "docsis.bpkmrsp.code",
143 FT_UINT8, BASE_DEC, VALS (code_field_vals), 0x0,
144 "BPKM Response Message", HFILL}
146 {&hf_docsis_bpkmrsp_ident,
147 {"BPKM Identifier", "docsis.bpkmrsp.ident",
148 FT_UINT8, BASE_DEC, NULL, 0x0,
149 "BPKM Identifier", HFILL}
151 {&hf_docsis_bpkmrsp_length,
152 {"BPKM Length", "docsis.bpkmrsp.length",
153 FT_UINT16, BASE_DEC, NULL, 0x0,
154 "BPKM Length", HFILL}
158 /* Setup protocol subtree array */
159 static gint *ett[] = {
163 /* Register the protocol name and description */
164 proto_docsis_bpkmrsp =
165 proto_register_protocol
166 ("DOCSIS Baseline Privacy Key Management Response", "DOCSIS BPKM-RSP",
169 /* Required function calls to register the header fields and subtrees used */
170 proto_register_field_array (proto_docsis_bpkmrsp, hf, array_length (hf));
171 proto_register_subtree_array (ett, array_length (ett));
173 register_dissector ("docsis_bpkmrsp", dissect_bpkmrsp,
174 proto_docsis_bpkmrsp);
178 /* If this dissector uses sub-dissector registration add a registration routine.
179 This format is required because a script is used to find these routines and
180 create the code that calls these routines.
183 proto_reg_handoff_docsis_bpkmrsp (void)
185 dissector_handle_t docsis_bpkmrsp_handle;
187 docsis_bpkmrsp_handle = find_dissector ("docsis_bpkmrsp");
188 attrs_handle = find_dissector ("docsis_bpkmattr");
189 dissector_add ("docsis_mgmt", 0x0D, docsis_bpkmrsp_handle);