forked from osmocom/wireshark
147 lines
3.8 KiB
C
147 lines
3.8 KiB
C
/* packet-asf.c
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* Routines for ASF packet dissection
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*
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* Duncan Laurie <duncan@sun.com>
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*
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* $Id: packet-asf.c,v 1.2 2003/06/04 08:51:36 guy Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 1998 Gerald Combs
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*
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* Copied from packet-rmcp.c
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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
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* 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 <glib.h>
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#include <epan/packet.h>
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/*
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* See
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*
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* http://www.dmtf.org/standards/standard_alert.php
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*/
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#define RMCP_CLASS_ASF 0x06
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static int proto_asf = -1;
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static int hf_asf_iana = -1;
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static int hf_asf_type = -1;
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static int hf_asf_tag = -1;
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static int hf_asf_len = -1;
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static dissector_handle_t data_handle;
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static gint ett_asf = -1;
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static const value_string asf_type_vals[] = {
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{ 0x10, "Reset" },
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{ 0x11, "Power-up" },
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{ 0x12, "Unconditional Power-down" },
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{ 0x13, "Power Cycle" },
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{ 0x40, "Presence Pong" },
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{ 0x41, "Capabilities Response" },
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{ 0x42, "System State Response" },
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{ 0x80, "Presence Ping" },
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{ 0x81, "Capabilities Request" },
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{ 0x82, "System State Request" },
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{ 0x00, NULL }
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};
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static void
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dissect_asf(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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proto_tree *asf_tree = NULL;
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proto_item *ti;
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guint8 type;
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guint8 len;
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tvbuff_t *next_tvb;
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if (check_col(pinfo->cinfo, COL_PROTOCOL))
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "ASF");
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if (check_col(pinfo->cinfo, COL_INFO))
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col_clear(pinfo->cinfo, COL_INFO);
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type = tvb_get_guint8(tvb, 4);
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len = tvb_get_guint8(tvb, 7);
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if (check_col(pinfo->cinfo, COL_INFO))
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col_add_fstr(pinfo->cinfo, COL_INFO, "%s",
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val_to_str(type, asf_type_vals, "Unknown (0x%02x)"));
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if (tree) {
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ti = proto_tree_add_item(tree, proto_asf, tvb, 0, 8, TRUE);
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asf_tree = proto_item_add_subtree(ti, ett_asf);
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proto_tree_add_item(asf_tree, hf_asf_iana, tvb, 0, 4, TRUE);
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proto_tree_add_item(asf_tree, hf_asf_type, tvb, 4, 1, TRUE);
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proto_tree_add_item(asf_tree, hf_asf_tag, tvb, 5, 1, TRUE);
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proto_tree_add_item(asf_tree, hf_asf_len, tvb, 7, 1, TRUE);
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}
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if (len) {
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next_tvb = tvb_new_subset(tvb, 8, -1, len);
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call_dissector(data_handle, next_tvb, pinfo, tree);
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}
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}
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void
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proto_register_asf(void)
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{
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static hf_register_info hf[] = {
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{ &hf_asf_iana, {
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"IANA Enterprise Number", "asf.iana",
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FT_UINT32, BASE_HEX, NULL, 0,
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"ASF IANA Enterprise Number", HFILL }},
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{ &hf_asf_type, {
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"Message Type", "asf.type",
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FT_UINT8, BASE_HEX, VALS(asf_type_vals), 0,
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"ASF Message Type", HFILL }},
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{ &hf_asf_tag, {
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"Message Tag", "asf.tag",
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FT_UINT8, BASE_HEX, NULL, 0,
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"ASF Message Tag", HFILL }},
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{ &hf_asf_len, {
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"Data Length", "asf.len",
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FT_UINT8, BASE_DEC, NULL, 0,
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"ASF Data Length", HFILL }},
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};
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static gint *ett[] = {
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&ett_asf,
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};
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proto_asf = proto_register_protocol(
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"Alert Standard Forum", "ASF", "asf");
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proto_register_field_array(proto_asf, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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}
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void
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proto_reg_handoff_asf(void)
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{
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dissector_handle_t asf_handle;
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data_handle = find_dissector("data");
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asf_handle = create_dissector_handle(dissect_asf, proto_asf);
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dissector_add("rmcp.class", RMCP_CLASS_ASF, asf_handle);
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}
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