3a583aeb59
include of <resolv.h> in any system header file gets the system <resolv.h> (needed for builds on Tru64 with GTK+ 1.2[.x]). svn path=/trunk/; revision=11615
289 lines
7.9 KiB
C
289 lines
7.9 KiB
C
/* packet-rdm.c
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* Routines for RDM packet disassembly
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*
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* $Id$
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*
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* Copyright (c) 2003 by Erwin Rol <erwin@erwinrol.com>
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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 1999 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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/* Include files */
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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 "plugins/plugin_api.h"
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#include "moduleinfo.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <gmodule.h>
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#include <ctype.h>
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#include <time.h>
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#include <string.h>
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#include <epan/packet.h>
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#include <epan/addr_resolv.h>
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#include "etypes.h"
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#include <epan/strutil.h>
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#include "plugins/plugin_api_defs.h"
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/* Define version if we are not building ethereal statically */
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#ifndef ENABLE_STATIC
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G_MODULE_EXPORT const gchar version[] = VERSION;
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#endif
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/*
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* See http://www.esta.org/tsp/E1-20inst.htm
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*
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*/
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void proto_reg_handoff_rdm(void);
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/* Define the rdm proto */
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static int proto_rdm = -1;
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/* Header */
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static int hf_rdm_sub_start_code = -1;
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static int hf_rdm_slot_count = -1;
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static int hf_rdm_dest_uid = -1;
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static int hf_rdm_src_uid = -1;
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static int hf_rdm_seq_nr = -1;
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static int hf_rdm_res_type = -1;
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static int hf_rdm_msg_count = -1;
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static int hf_rdm_sub_device = -1;
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static int hf_rdm_mdb = -1;
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static int hf_rdm_checksum = -1;
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/* Define the tree for rdm */
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static int ett_rdm = -1;
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static void
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dissect_rdm(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) {
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gint offset = 0, start_offset,i;
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guint16 checksum,calc_checksum;
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gint mdb_size;
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proto_tree *ti=NULL,*rdm_tree=NULL;
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proto_item* item;
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/* Set the protocol column */
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if(check_col(pinfo->cinfo,COL_PROTOCOL)){
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col_set_str(pinfo->cinfo,COL_PROTOCOL,"RDM");
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}
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/* Clear out stuff in the info column */
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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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}
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if (tree) {
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ti = proto_tree_add_item(tree, proto_rdm, tvb, offset, -1, FALSE);
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rdm_tree = proto_item_add_subtree(ti, ett_rdm);
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}
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if (check_col(pinfo->cinfo, COL_INFO)) {
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col_append_fstr(pinfo->cinfo, COL_INFO, "%s",
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"RDM");
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}
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if (tree)
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{
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start_offset = offset;
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proto_tree_add_item(rdm_tree, hf_rdm_sub_start_code, tvb,
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offset, 1, FALSE);
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offset += 1;
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mdb_size = tvb_get_guint8(tvb, offset) - 19;
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proto_tree_add_item(rdm_tree, hf_rdm_slot_count, tvb,
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offset, 1, FALSE);
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offset += 1;
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proto_tree_add_item(rdm_tree, hf_rdm_dest_uid, tvb,
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offset, 6, FALSE);
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offset += 6;
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proto_tree_add_item(rdm_tree, hf_rdm_src_uid, tvb,
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offset, 6, FALSE);
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offset += 6;
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proto_tree_add_item(rdm_tree, hf_rdm_seq_nr, tvb,
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offset, 1, FALSE);
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offset += 1;
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proto_tree_add_item(rdm_tree, hf_rdm_res_type, tvb,
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offset, 1, FALSE);
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offset += 1;
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proto_tree_add_item(rdm_tree, hf_rdm_msg_count, tvb,
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offset, 1, FALSE);
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offset += 1;
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proto_tree_add_item(rdm_tree, hf_rdm_sub_device, tvb,
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offset, 1, FALSE);
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offset += 1;
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proto_tree_add_item(rdm_tree, hf_rdm_mdb, tvb,
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offset, mdb_size, FALSE);
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offset += mdb_size;
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calc_checksum = 0x00f0;
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for( i = start_offset; i < offset; i++)
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{
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calc_checksum += tvb_get_guint8( tvb, i );
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}
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checksum = tvb_get_ntohs( tvb, offset );
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item = proto_tree_add_item(rdm_tree, hf_rdm_checksum, tvb,
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offset, 2, FALSE);
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if( calc_checksum != checksum )
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proto_item_append_text( item, " ( INCORRECT should be 0x%04x )", calc_checksum );
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else
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proto_item_append_text( item, " ( CORRECT )" );
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offset += 2;
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}
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}
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void
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proto_register_rdm(void) {
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static hf_register_info hf[] = {
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{ &hf_rdm_sub_start_code,
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{ "Sub Start Code",
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"rdm.sub_start_code",
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FT_UINT8, BASE_HEX, NULL, 0x0,
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"Sub Start Code", HFILL }},
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{ &hf_rdm_slot_count,
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{ "Slot Count",
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"rdm.slot_count",
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FT_UINT8, BASE_DEC, NULL, 0x0,
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"Slot Count", HFILL }},
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{ &hf_rdm_dest_uid,
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{ "Dest. UID",
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"rdm.dest_uid",
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FT_BYTES, BASE_HEX, NULL, 0x0,
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"Dest. UID", HFILL }},
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{ &hf_rdm_src_uid,
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{ "Source UID",
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"rdm.src_uid",
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FT_BYTES, BASE_HEX, NULL, 0x0,
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"Source UID", HFILL }},
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{ &hf_rdm_seq_nr,
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{ "Sequence Number",
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"rdm.seq_nr",
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FT_UINT8, BASE_DEC, NULL, 0x0,
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"Sequence Number", HFILL }},
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{ &hf_rdm_res_type,
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{ "Response Type",
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"rdm.res_type",
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FT_UINT8, BASE_HEX, NULL, 0x0,
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"Response Type", HFILL }},
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{ &hf_rdm_msg_count,
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{ "Message Count",
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"rdm.msg_count",
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FT_UINT8, BASE_DEC, NULL, 0x0,
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"Message Count", HFILL }},
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{ &hf_rdm_sub_device,
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{ "Sub Device",
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"rdm.sub_device",
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FT_UINT8, BASE_HEX, NULL, 0x0,
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"Sub Device", HFILL }},
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{ &hf_rdm_mdb,
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{ "MDB",
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"rdm.mdb",
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FT_BYTES, BASE_HEX, NULL, 0x0,
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"MDB", HFILL }},
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{ &hf_rdm_checksum,
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{ "Checksum",
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"rdm.checksum",
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FT_UINT16, BASE_HEX, NULL, 0x0,
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"Checksum", HFILL }}
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};
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static gint *ett[] = {
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&ett_rdm,
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};
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proto_rdm = proto_register_protocol("RDM","RDM","rdm");
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proto_register_field_array(proto_rdm,hf,array_length(hf));
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proto_register_subtree_array(ett,array_length(ett));
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register_dissector("rdm", dissect_rdm, proto_rdm);
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}
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/* The registration hand-off routing */
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void
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proto_reg_handoff_rdm(void) {
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static int rdm_initialized = FALSE;
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static dissector_handle_t rdm_handle;
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if(!rdm_initialized) {
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rdm_handle = create_dissector_handle(dissect_rdm,proto_rdm);
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rdm_initialized = TRUE;
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} else {
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dissector_delete("udp.port",0,rdm_handle);
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}
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dissector_add("udp.port",0,rdm_handle);
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}
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/* Start the functions we need for the plugin stuff */
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#ifndef ENABLE_STATIC
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G_MODULE_EXPORT void
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plugin_reg_handoff(void){
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proto_reg_handoff_rdm();
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}
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G_MODULE_EXPORT void
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plugin_init(plugin_address_table_t *pat
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#ifndef PLUGINS_NEED_ADDRESS_TABLE
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_U_
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#endif
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){
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/* initialise the table of pointers needed in Win32 DLLs */
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plugin_address_table_init(pat);
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/* register the new protocol, protocol fields, and subtrees */
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if (proto_rdm == -1) { /* execute protocol initialization only once */
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proto_register_rdm();
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}
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}
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#endif
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/* End the functions we need for plugin stuff */
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