2011-05-31 19:31:45 +00:00
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/* packet-opensafety.c
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* openSAFETY is a machine-safety protocol, encapsulated in modern fieldbus
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* and industrial ethernet solutions.
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* For more information see http://www.open-safety.org
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* By Roland Knall <roland.knall@br-automation.com>
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* Copyright 2011 Bernecker + Rainer Industrie-Elektronik Ges.m.b.H.
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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 <glib.h>
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#include <epan/packet.h>
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#include <epan/prefs.h>
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#include <epan/etypes.h>
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#include <epan/tfs.h>
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#include <epan/proto.h>
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#include <epan/emem.h>
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#include <epan/dissectors/packet-udp.h>
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#include <stdio.h>
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#include <string.h>
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/* General definitions */
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/* openSAFETY UDP Port */
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#ifndef UDP_PORT_OPENSAFETY
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#define UDP_PORT_OPENSAFETY 9877
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#endif
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/* SercosIII UDP Port */
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#ifndef UDP_PORT_SIII
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#define UDP_PORT_SIII 8755
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#endif
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/* Under linux, this get's defined in netinet/in.h */
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#ifndef IPPROTO_UDP
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#define IPPROTO_UDP 0x11
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#endif
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#ifndef OPENSAFETY_PINFO_CONST_DATA
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#define OPENSAFETY_PINFO_CONST_DATA 0xAABBCCDD
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#endif
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/* openSAFETY CRC types */
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#define OPENSAFETY_CHECKSUM_CRC8 0x01
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#define OPENSAFETY_CHECKSUM_CRC16 0x02
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#define OPENSAFETY_CHECKSUM_CRC32 0x04
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static const value_string message_crc_type[] = {
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{ OPENSAFETY_CHECKSUM_CRC8, "CRC8" },
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{ OPENSAFETY_CHECKSUM_CRC16, "CRC16" },
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{ OPENSAFETY_CHECKSUM_CRC32, "CRC32" },
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{ 0, NULL }
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};
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/* openSAFETY Message Types */
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#define OPENSAFETY_SPDO_MESSAGE_TYPE 0xC0
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#define OPENSAFETY_SSDO_MESSAGE_TYPE 0xE0
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#define OPENSAFETY_SLIM_SSDO_MESSAGE_TYPE 0xE8
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#define OPENSAFETY_SNMT_MESSAGE_TYPE 0xA0
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static const value_string message_id_values[] = {
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{ OPENSAFETY_SPDO_MESSAGE_TYPE, "openSAFETY SPDO" },
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{ OPENSAFETY_SSDO_MESSAGE_TYPE, "openSAFETY SSDO" },
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{ OPENSAFETY_SLIM_SSDO_MESSAGE_TYPE, "openSAFETY Slim SSDO" },
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{ OPENSAFETY_SNMT_MESSAGE_TYPE, "openSAFETY SNMT" },
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{ 0, NULL }
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};
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/* openSAFETY Message IDs */
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#define OPENSAFETY_MSG_SPDO_DATA_ONLY 0xC0
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#define OPENSAFETY_MSG_SPDO_DATA_WITH_TIME_REQUEST 0xC8
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#define OPENSAFETY_MSG_SPDO_DATA_WITH_TIME_RESPONSE 0xD0
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#define OPENSAFETY_MSG_SPDO_RESERVED 0xD8
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#define OPENSAFETY_MSG_SSDO_SERVICE_REQUEST 0xE0
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#define OPENSAFETY_MSG_SSDO_SERVICE_RESPONSE 0xE4
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#define OPENSAFETY_MSG_SSDO_SLIM_SERVICE_REQUEST 0xE8
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#define OPENSAFETY_MSG_SSDO_SLIM_SERVICE_RESPONSE 0xEC
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#define OPENSAFETY_MSG_SNMT_REQUEST_UDID 0xA0
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#define OPENSAFETY_MSG_SNMT_RESPONSE_UDID 0xA4
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#define OPENSAFETY_MSG_SNMT_ASSIGN_SADR 0xA8
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#define OPENSAFETY_MSG_SNMT_SADR_ASSIGNED 0xAC
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#define OPENSAFETY_MSG_SNMT_SERVICE_REQUEST 0xB0
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#define OPENSAFETY_MSG_SNMT_SERVICE_RESPONSE 0xB4
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#define OPENSAFETY_MSG_SNMT_SN_RESET_GUARDING_SCM 0xBC
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static const value_string message_type_values[] = {
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{ OPENSAFETY_MSG_SPDO_DATA_ONLY, "SPDO Data only" },
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{ OPENSAFETY_MSG_SPDO_DATA_WITH_TIME_REQUEST, "SPDO Data with Time Request" },
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{ OPENSAFETY_MSG_SPDO_DATA_WITH_TIME_RESPONSE, "SPDO Data with Time Response" },
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{ OPENSAFETY_MSG_SPDO_RESERVED, "SPDO Reserved" },
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{ OPENSAFETY_MSG_SSDO_SERVICE_REQUEST, "SSDO Service Request" },
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{ OPENSAFETY_MSG_SSDO_SERVICE_RESPONSE, "SSDO Service Response" },
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{ OPENSAFETY_MSG_SSDO_SLIM_SERVICE_REQUEST, "SSDO Slim Service Request" },
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{ OPENSAFETY_MSG_SSDO_SLIM_SERVICE_RESPONSE, "SSDO Slim Service Response" },
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{ OPENSAFETY_MSG_SNMT_REQUEST_UDID, "SNMT Request UDID" },
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{ OPENSAFETY_MSG_SNMT_RESPONSE_UDID, "SNMT Response UDID" },
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{ OPENSAFETY_MSG_SNMT_ASSIGN_SADR, "SNMT Assign SADR" },
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{ OPENSAFETY_MSG_SNMT_SADR_ASSIGNED, "SNMT SADR Assigned" },
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{ OPENSAFETY_MSG_SNMT_SERVICE_REQUEST, "SNMT Service Request" },
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{ OPENSAFETY_MSG_SNMT_SERVICE_RESPONSE, "SNMT Service Response" },
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{ OPENSAFETY_MSG_SNMT_SN_RESET_GUARDING_SCM, "SNMT SN reset guarding SCM" },
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{0, NULL }
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};
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/* SNTM extended Services */
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#define OPENSAFETY_MSG_SNMT_EXT_SN_SET_TO_PRE_OP 0x00
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#define OPENSAFETY_MSG_SNMT_EXT_SN_SET_TO_OP 0x02
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#define OPENSAFETY_MSG_SNMT_EXT_SCM_SET_TO_STOP 0x04
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#define OPENSAFETY_MSG_SNMT_EXT_SCM_SET_TO_OP 0x06
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#define OPENSAFETY_MSG_SNMT_EXT_SCM_GUARD_SN 0x08
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#define OPENSAFETY_MSG_SNMT_EXT_ASSIGN_ADDITIONAL_SADR 0x0A
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#define OPENSAFETY_MSG_SNMT_EXT_SN_ACKNOWLEDGE 0x0C
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#define OPENSAFETY_MSG_SNMT_EXT_SN_ASSIGN_UDID_SCM 0x0E
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#define OPENSAFETY_MSG_SNMT_EXT_SN_STATUS_PRE_OP 0x01
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#define OPENSAFETY_MSG_SNMT_EXT_SN_STATUS_OP 0x03
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#define OPENSAFETY_MSG_SNMT_EXT_SN_ASSIGNED_ADDITIONAL_SADR 0x05
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#define OPENSAFETY_MSG_SNMT_EXT_SN_FAIL 0x07
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#define OPENSAFETY_MSG_SNMT_EXT_SN_BUSY 0x09
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#define OPENSAFETY_MSG_SNMT_EXT_SN_ASSIGNED_UDID_SCM 0x0F
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static const value_string message_service_type[] = {
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{ OPENSAFETY_MSG_SNMT_EXT_SN_SET_TO_PRE_OP, "SN set to pre Operational" },
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{ OPENSAFETY_MSG_SNMT_EXT_SN_SET_TO_OP, "SN set to Operational" },
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{ OPENSAFETY_MSG_SNMT_EXT_SCM_SET_TO_STOP, "SCM set to Stop" },
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{ OPENSAFETY_MSG_SNMT_EXT_SCM_SET_TO_OP, "SCM set to Operational" },
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{ OPENSAFETY_MSG_SNMT_EXT_SCM_GUARD_SN, "SCM guard SN" },
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{ OPENSAFETY_MSG_SNMT_EXT_ASSIGN_ADDITIONAL_SADR, "Assign additional SADR" },
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{ OPENSAFETY_MSG_SNMT_EXT_SN_ACKNOWLEDGE, "SN Acknowledge" },
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{ OPENSAFETY_MSG_SNMT_EXT_SN_ASSIGN_UDID_SCM, "SN assign UDID SCM" },
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{ OPENSAFETY_MSG_SNMT_EXT_SN_STATUS_PRE_OP, "SN status pre Operational" },
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{ OPENSAFETY_MSG_SNMT_EXT_SN_STATUS_OP, "SN status Operational" },
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{ OPENSAFETY_MSG_SNMT_EXT_SN_ASSIGNED_ADDITIONAL_SADR, "Assigned additional SADR" },
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{ OPENSAFETY_MSG_SNMT_EXT_SN_FAIL, "SN Fail" },
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{ OPENSAFETY_MSG_SNMT_EXT_SN_BUSY, "SN Busy" },
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{ OPENSAFETY_MSG_SNMT_EXT_SN_ASSIGNED_UDID_SCM, "SN assigned UDID SCM" },
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{ 0, NULL }
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};
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/* SNTM extended Services */
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#define OPENSAFETY_MSG_SSDO_ABORT 0x04
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#define OPENSAFETY_MSG_SSDO_UPLOAD_SEGMENT_MIDDLE 0x08
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#define OPENSAFETY_MSG_SSDO_DOWNLOAD_SEGMENT_MIDDLE 0x09
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#define OPENSAFETY_MSG_SSDO_UPLOAD_INITIATE_EXPEDITED 0x20
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#define OPENSAFETY_MSG_SSDO_DOWNLOAD_INITIATE_EXPEDITED 0x21
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#define OPENSAFETY_MSG_SSDO_UPLOAD_INITIATE_SEGMENTED 0x28
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#define OPENSAFETY_MSG_SSDO_DOWNLOAD_INITIATE_SEGMENTED 0x29
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#define OPENSAFETY_MSG_SSDO_UPLOAD_SEGMENT_END 0x48
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#define OPENSAFETY_MSG_SSDO_DOWNLOAD_SEGMENT_END 0x49
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/*
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#define OPENSAFETY_MSG_SSDO_BLOCK_UPLOAD_SEGMENT_MIDDLE 0x88
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#define OPENSAFETY_MSG_SSDO_BLOCK_DOWNLOAD_SEGMENT_MIDDLE 0x89
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#define OPENSAFETY_MSG_SSDO_BLOCK_UPLOAD_INITIATE 0xA8
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#define OPENSAFETY_MSG_SSDO_BLOCK_DOWNLOAD_INITIATE 0xA9
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#define OPENSAFETY_MSG_SSDO_BLOCK_UPLOAD_INITIATE_EXPEDITED 0xC0
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#define OPENSAFETY_MSG_SSDO_BLOCK_UPLOAD_SEGMENT_END 0x40
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#define OPENSAFETY_MSG_SSDO_BLOCK_DOWNLOAD_SEGMENT_END 0xC9
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*/
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static const value_string ssdo_sacmd_values[] = {
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/* { OPENSAFETY_MSG_SSDO_BLOCK_DOWNLOAD_SEGMENT_END, "Block Download Segment End" },
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{ OPENSAFETY_MSG_SSDO_BLOCK_UPLOAD_INITIATE, "Block Upload Expedited Initiate" },
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{ OPENSAFETY_MSG_SSDO_BLOCK_UPLOAD_INITIATE_EXPEDITED,"Block Upload Initiate" },
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{ OPENSAFETY_MSG_SSDO_BLOCK_DOWNLOAD_INITIATE, "Block Download Initiate" },
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{ OPENSAFETY_MSG_SSDO_BLOCK_DOWNLOAD_SEGMENT_MIDDLE, "Block Download Middle Segment" },
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{ OPENSAFETY_MSG_SSDO_BLOCK_UPLOAD_SEGMENT_END, "Block Upload End Segment" },*/
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{ OPENSAFETY_MSG_SSDO_DOWNLOAD_SEGMENT_END, "Download End Segment" },
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{ OPENSAFETY_MSG_SSDO_UPLOAD_SEGMENT_END, "Upload End Segment" },
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{ OPENSAFETY_MSG_SSDO_DOWNLOAD_INITIATE_EXPEDITED, "Download Expedited Initiate" },
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{ OPENSAFETY_MSG_SSDO_UPLOAD_INITIATE_SEGMENTED, "Upload Initiate Segmented" },
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{ OPENSAFETY_MSG_SSDO_DOWNLOAD_INITIATE_SEGMENTED, "Download Initiate Segmented" },
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{ OPENSAFETY_MSG_SSDO_UPLOAD_INITIATE_EXPEDITED, "Upload Expedited Initiate" },
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{ OPENSAFETY_MSG_SSDO_DOWNLOAD_SEGMENT_MIDDLE, "Download Middle Segment" },
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{ OPENSAFETY_MSG_SSDO_UPLOAD_SEGMENT_MIDDLE, "Upload Middle Segment" },
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{ OPENSAFETY_MSG_SSDO_ABORT, "Abort" },
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{ 0, NULL }
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};
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#define OPENSAFETY_SSDO_SACMD_ACC 0x01
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#define OPENSAFETY_SSDO_SACMD_RES 0x02
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#define OPENSAFETY_SSDO_SACMD_ABRT 0x04
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#define OPENSAFETY_SSDO_SACMD_SEG 0x08
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#define OPENSAFETY_SSDO_SACMD_TGL 0x10
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#define OPENSAFETY_SSDO_SACMD_INI 0x20
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#define OPENSAFETY_SSDO_SACMD_ENSG 0x40
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#define OPENSAFETY_SSDO_SACMD_BLK 0x80
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static const true_false_string opensafety_sacmd_acc = { "Write Access", "Read Access" };
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static const true_false_string opensafety_sacmd_res = { "Reserved", "Reserved" };
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static const true_false_string opensafety_sacmd_abrt = { "Abort Transfer", "Successful Transfer" };
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static const true_false_string opensafety_sacmd_seg = { "Segmented Access", "Expedited Access" };
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static const true_false_string opensafety_on_off = { "On", "Off" };
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static const true_false_string opensafety_set_notset = { "Set", "Not set" };
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static const true_false_string opensafety_sacmd_ini = { "Initiate", "No Initiate" };
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static const true_false_string opensafety_sacmd_ensg = { "No more segments", "More segments" };
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static const true_false_string opensafety_sacmd_blk = { "Block Transfer", "Normal Transfer" };
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#define OPENSAFETY_SPDO_CONNECTION_VALID 0x04
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static const value_string abort_codes[] = {
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/* SSDO abort codes */
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{ 0x05030000, "Reserved" },
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{ 0x05040000, "SSDO protocol timed out" },
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{ 0x05040001, "Client/server Command ID not valid or unknown" },
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{ 0x05040002, "Invalid block size" },
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{ 0x05040003, "Invalid sequence number" },
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{ 0x05040004, "Reserved" },
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{ 0x05040005, "Out of memory" },
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{ 0x06010000, "Unsupported access to an object" },
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{ 0x06010001, "Attempt to read a write-only object" },
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{ 0x06010002, "Attempt to write a read-only object" },
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{ 0x06020000, "Object does not exist in the object dictionary" },
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{ 0x06040041, "Object cannot be mapped to the SPDO" },
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{ 0x06040042, "The number and length of the objects to be mapped would exceed SPDO length" },
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{ 0x06040043, "General parameter incompatibility" },
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{ 0x06040047, "General internal incompatibility in the device" },
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{ 0x06060000, "Access failed due to a hardware error" },
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{ 0x06070010, "Data type does not match, length of service parameter does not match" },
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{ 0x06070012, "Data type does not match, length of service parameter too high" },
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{ 0x06070013, "Data type does not match, length of service parameter too low" },
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{ 0x06090011, "Sub-index does not exist" },
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{ 0x06090030, "Value range o parameter exceeded (only for write access)" },
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{ 0x06090031, "Value of parameter written too high" },
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{ 0x06090032, "Value of parameter written too low" },
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{ 0x06090036, "Maximum value is less than minimum value" },
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{ 0x08000000, "General error" },
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{ 0x08000020, "Data cannot be transferred or stored to the application" },
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{ 0x08000021, "Data cannot be transferred or stored to the application because of local control" },
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{ 0x08000022, "Data cannot be transferred or stored to the application because of the present device state" },
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{ 0x08000023, "Data cannot be transferred or stored to the application because of the object data is not available now" },
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{ 0, NULL }
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};
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static const true_false_string opensafety_message_type = { "Request", "Response" };
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#define OPENSAFETY_REQUEST TRUE
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#define OPENSAFETY_RESPONSE FALSE
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#define OSS_FRAME_POS_ADDR 0
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#define OSS_FRAME_POS_ID 1
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#define OSS_FRAME_POS_LEN 2
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#define OSS_FRAME_POS_CT 3
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#define OSS_FRAME_POS_DATA 4
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#define OSS_PAYLOAD_MAXSIZE_FOR_CRC8 0x08
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|
|
|
#define OSS_SLIM_FRAME_WITH_CRC8_MAXSIZE 0x13 /* 19 */
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|
|
#define OSS_SLIM_FRAME2_WITH_CRC8 0x06 /* 6 */
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#define OSS_SLIM_FRAME2_WITH_CRC16 0x07 /* 7 */
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#define OSS_FRAME_ADDR(f, offset) (f[OSS_FRAME_POS_ADDR + offset] + ((guint8)((f[OSS_FRAME_POS_ADDR + offset + 1]) << 6) << 2))
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#define OSS_FRAME_ID(f, offset) ((f[OSS_FRAME_POS_ID + offset] >> 2 ) << 2)
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#define OSS_FRAME_LENGTH(f, offset) (f[OSS_FRAME_POS_LEN + offset])
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#define OSS_FRAME_FIELD(f, position) (f[position])
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#define CRC8_POLY 0x2F /* CRC-8 Polynom */
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|
#define CRC16_POLY 0x5935 /* CRC-16 Polynom */
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static int proto_opensafety = -1;
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static gint ett_opensafety = -1;
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static gint ett_opensafety_checksum = -1;
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|
static gint ett_opensafety_snmt = -1;
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static gint ett_opensafety_ssdo = -1;
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static gint ett_opensafety_ssdo_sacmd = -1;
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static int hf_oss_msg = -1;
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static int hf_oss_msgtype = -1;
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static int hf_oss_msg_sender = -1;
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static int hf_oss_msg_receiver = -1;
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static int hf_oss_length= -1;
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static int hf_oss_data = -1;
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static int hf_oss_crc = -1;
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static int hf_oss_crc_valid = -1;
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static int hf_oss_crc_type = -1;
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static int hf_oss_snmt_slave = -1;
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static int hf_oss_snmt_master = -1;
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static int hf_oss_snmt_udid = -1;
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static int hf_oss_snmt_scm = -1;
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static int hf_oss_snmt_tool = -1;
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static int hf_oss_snmt_timestamp = -1;
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static int hf_oss_snmt_service_id = -1;
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static int hf_oss_snmt_error_group = -1;
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static int hf_oss_snmt_error_code = -1;
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static int hf_oss_ssdo_server = -1;
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static int hf_oss_ssdo_client = -1;
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static int hf_oss_ssdo_sano = -1;
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static int hf_oss_ssdo_sacmd = -1;
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static int hf_oss_ssdo_sod_index = -1;
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static int hf_oss_ssdo_sod_subindex = -1;
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static int hf_oss_ssdo_payload = -1;
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static int hf_oss_ssdo_payload_size = -1;
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static int hf_oss_ssdo_segment_size = -1;
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static int hf_oss_ssdo_inhibit_time = -1;
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static int hf_oss_ssdo_abort_code = -1;
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static int hf_oss_ssdo_sacmd_access_type = -1;
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static int hf_oss_ssdo_sacmd_reserved = -1;
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static int hf_oss_ssdo_sacmd_abort_transfer = -1;
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static int hf_oss_ssdo_sacmd_segmentation = -1;
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static int hf_oss_ssdo_sacmd_toggle = -1;
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static int hf_oss_ssdo_sacmd_initiate = -1;
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static int hf_oss_ssdo_sacmd_end_segment = -1;
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static int hf_oss_ssdo_sacmd_block_transfer = -1;
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static int hf_oss_scm_udid = -1;
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static int hf_oss_scm_udid_valid = -1;
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static int hf_oss_spdo_connection_valid = -1;
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static int hf_oss_spdo_payload = -1;
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static int hf_oss_spdo_producer = -1;
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static int hf_oss_spdo_producer_time = -1;
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static int hf_oss_spdo_time_value_sn = -1;
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static int hf_oss_spdo_time_request = -1;
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static int hf_oss_spdo_time_request_to = -1;
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static int hf_oss_spdo_time_request_from = -1;
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|
|
static const char *global_scm_udid = "00:00:00:00:00:00";
|
2011-06-21 05:21:15 +00:00
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|
|
static gboolean global_mbtcp_big_endian = FALSE;
|
2011-06-17 01:56:35 +00:00
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|
|
static guint global_network_udp_port = UDP_PORT_OPENSAFETY;
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|
|
static guint global_network_udp_port_sercosiii = UDP_PORT_SIII;
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|
|
/* Conversation functions */
|
2011-05-31 19:31:45 +00:00
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|
|
/* This is defined by the specification. The Address field is 10 bits long, and the node with the number
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|
|
* 1 is always the SCM, therefore ( 2 ^ 10 ) - 1 nodes can be addressed. We use 2 ^ 10 here, because the
|
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|
|
* SCM can talk to himself (Assign SADR for instance ) */
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|
|
#define MAX_NUMBER_OF_SAFETY_NODES ( 2 ^ 10 )
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|
|
/* Tracks the information that the packet pinfo has been received by receiver, and adds that information to the tree, using pos, as
|
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|
|
* byte position in the PDU */
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|
|
#define PACKET_RECEIVED_BY(pinfo, recv, pos) proto_tree_add_uint(opensafety_tree, hf_oss_msg_receiver, message_tvb, pos, 2, recv);
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|
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|
|
/* Tracks the information that the packet pinfo has been sent by sender, and received by receiver, and adds that information to
|
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|
|
* the tree, using pos for the sender and pos2 for the receiver, as byte position in the PDU */
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|
|
#define PACKET_SEND_FROM_TO(pinfo, send, pos, recv, pos2) proto_tree_add_uint(opensafety_tree, hf_oss_msg_sender, message_tvb, pos, 2, send); \
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|
|
proto_tree_add_uint(opensafety_tree, hf_oss_msg_receiver, message_tvb, pos2, 2, recv);
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|
|
|
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|
|
/* Tracks the information that the packet pinfo has been sent by sender, and received by everyone else, and adds that information to
|
|
|
|
* the tree, using pos, as byte position in the PDU */
|
|
|
|
#define PACKET_SEND_FROM_TO_ALL(pinfo, sender, pos) proto_tree_add_uint(opensafety_tree, hf_oss_msg_sender, message_tvb, pos, 2, sender);
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|
|
|
|
|
|
|
/* Helper Functions & Function Prototypes */
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|
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|
|
static guint8 opensafety_get_scm_udid(guint8 * scmUDID);
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|
|
|
static guint16 findFrame1Position ( guint8 dataLength, guint8 byteStream[] );
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|
|
|
static guint8 * unxorFrame(guint8 dataLength, guint8 byteStream[], guint16 startFrame1, guint16 startFrame2, guint8 scmUDID[]);
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|
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|
|
|
|
|
/*
|
|
|
|
* @brief Calculates a CRC8 checksum for the given buffer
|
|
|
|
* @param len the length of the given buffer
|
|
|
|
* @param pBuffer a pointer to a buffer of the given length
|
|
|
|
* @return the CRC8 checksum for the buffer
|
|
|
|
*/
|
|
|
|
static guint8 crc8_opensafety(guint32 len, guint8 * pBuffer, guint8 initCRC);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* @brief Calculates a CRC16 checksum for the given buffer
|
|
|
|
* @param len the length of the given buffer
|
|
|
|
* @param pBuffer a pointer to a buffer of the given length
|
|
|
|
* @return the CRC16 checksum for the buffer
|
|
|
|
*/
|
|
|
|
static guint16 crc16_opensafety(guint32 len, guint8 * pBuffer, guint16 initCRC);
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|
|
|
|
|
|
|
static guint stringToBytes( const char * string, guint8 * pBuffer, guint32 length );
|
|
|
|
|
2011-06-02 14:22:19 +00:00
|
|
|
static guint8 findSafetyFrame ( guint8 * pBuffer, guint32 length, guint u_Offset, guint *u_frameOffset, guint *u_frameLength );
|
2011-05-31 19:31:45 +00:00
|
|
|
|
|
|
|
static guint stringToBytes( const char * stringToBytes, guint8 * pBuffer, guint32 length )
|
|
|
|
{
|
|
|
|
guint k;
|
|
|
|
guint32 byte ;
|
|
|
|
char * endptr ;
|
|
|
|
char * str, * temp, * token;
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|
|
|
|
|
|
k = 0;
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|
|
|
str = ep_strdup(stringToBytes);
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|
|
|
token = strtok( str, ":" );
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|
|
|
temp = token;
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|
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|
|
|
|
byte = strtol ( temp, &endptr, 16 );
|
|
|
|
pBuffer[k] = byte;
|
|
|
|
k++;
|
|
|
|
|
|
|
|
for ( temp = token ; ; temp = NULL )
|
|
|
|
{
|
|
|
|
temp = strtok( NULL, ":" );
|
|
|
|
if ( temp == NULL || ( k == length ) )
|
|
|
|
break;
|
|
|
|
byte = strtol ( temp, &endptr, 16 );
|
|
|
|
pBuffer[k] = byte;
|
|
|
|
k++;
|
|
|
|
}
|
|
|
|
|
|
|
|
return k;
|
|
|
|
}
|
|
|
|
|
2011-06-17 01:56:35 +00:00
|
|
|
static guint16
|
|
|
|
findFrame1PositionExtended ( guint8 dataLength, guint8 byteStream[], gboolean checkIfSlimMistake )
|
2011-05-31 19:31:45 +00:00
|
|
|
{
|
|
|
|
guint16 i_wFrame1Position = 0;
|
|
|
|
guint16 i_payloadLength, i_calculatedLength = 0;
|
2011-06-17 01:56:35 +00:00
|
|
|
guint16 i_offset = 0, calcCRC = 0, frameCRC = 0;
|
2011-05-31 19:31:45 +00:00
|
|
|
guint8 b_tempByte = 0;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* First, a normal package get's assumed. Calculation of frame 1 position is
|
|
|
|
* pretty easy, because, the length of the whole package is 11 + 2*n + 2*o, which
|
|
|
|
* results in frame 1 start at (6 + n + o), which is length / 2 + 1
|
|
|
|
*/
|
|
|
|
i_wFrame1Position = dataLength / 2 + 1;
|
|
|
|
i_payloadLength = byteStream [ i_wFrame1Position + 2 ];
|
|
|
|
/* Calculating the assumed frame length, taking CRC8/CRC16 into account */
|
|
|
|
i_calculatedLength = i_payloadLength * 2 + 11 + 2 * (i_payloadLength > OSS_PAYLOAD_MAXSIZE_FOR_CRC8 ? 1 : 0);
|
|
|
|
|
2011-06-17 01:56:35 +00:00
|
|
|
/* To prevent miscalculations, where by chance the byte at [length / 2] + 3 is a value matching a possible payload length,
|
|
|
|
* but in reality the frame is a slim ssdo, the CRC of frame 1 get's checked additionally. This check
|
|
|
|
* is somewhat time consuming, so it will only run if the normal check led to a mistake detected along the line */
|
|
|
|
if ( checkIfSlimMistake && i_calculatedLength == dataLength )
|
|
|
|
{
|
|
|
|
if ( dataLength > OSS_PAYLOAD_MAXSIZE_FOR_CRC8 )
|
|
|
|
calcCRC = crc16_opensafety(dataLength + 4, &byteStream[i_wFrame1Position], 0);
|
|
|
|
else
|
|
|
|
calcCRC = crc8_opensafety(dataLength + 4, &byteStream[i_wFrame1Position], 0);
|
|
|
|
|
|
|
|
frameCRC = byteStream[i_wFrame1Position + dataLength + OSS_FRAME_POS_DATA];
|
|
|
|
if (dataLength > OSS_PAYLOAD_MAXSIZE_FOR_CRC8)
|
|
|
|
frameCRC += (byteStream[i_wFrame1Position + dataLength + OSS_FRAME_POS_DATA + 1] << 8);
|
|
|
|
|
|
|
|
/* if the calculated crc does not match the detected, the package is not a normal openSAFETY package */
|
|
|
|
if ( frameCRC != calcCRC )
|
|
|
|
dataLength = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* If the calculated length differs from the given length, a slim package is assumed. */
|
2011-05-31 19:31:45 +00:00
|
|
|
if ( i_calculatedLength != dataLength )
|
|
|
|
{
|
|
|
|
/* possible slim package */
|
|
|
|
i_wFrame1Position = 0;
|
|
|
|
/*
|
|
|
|
* Slim packages have a fixed sublength of either 6 bytes for frame 2 in
|
|
|
|
* case of crc8 and 7 bytes in case of crc16
|
|
|
|
*/
|
|
|
|
i_offset = OSS_SLIM_FRAME2_WITH_CRC8 + ( dataLength < (OSS_SLIM_FRAME_WITH_CRC8_MAXSIZE + 1) ? 0 : 1 );
|
|
|
|
/* Last 2 digits belong to addr, therefore have to be cleared */
|
|
|
|
b_tempByte = ( ( byteStream [ i_offset + 1 ] ) >> 2 ) << 2;
|
|
|
|
|
|
|
|
/* If the id byte xor 0xE8 is 0, we have a slim package */
|
|
|
|
if ( ( ( b_tempByte ^ OPENSAFETY_MSG_SSDO_SLIM_SERVICE_REQUEST ) == 0 ) ||
|
|
|
|
( ( b_tempByte ^ OPENSAFETY_MSG_SSDO_SLIM_SERVICE_RESPONSE ) == 0 ) )
|
|
|
|
{
|
|
|
|
/* Slim package found */
|
|
|
|
i_wFrame1Position = i_offset;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return i_wFrame1Position;
|
|
|
|
}
|
|
|
|
|
2011-06-17 01:56:35 +00:00
|
|
|
static guint16
|
|
|
|
findFrame1Position ( guint8 dataLength, guint8 byteStream[] )
|
|
|
|
{
|
|
|
|
/* To safe time, the normal search, does not take the possible mistake into consideration */
|
|
|
|
return ( findFrame1PositionExtended(dataLength, byteStream, FALSE) );
|
|
|
|
}
|
|
|
|
|
2011-05-31 19:31:45 +00:00
|
|
|
/*
|
|
|
|
* This function applies the given UDID to the bytestream, considering the start of frame 2
|
|
|
|
*/
|
|
|
|
static guint8 * unxorFrame(guint8 dataLength, guint8 byteStream[], guint16 frameStart1, guint16 frameStart2, guint8 scmUDID[])
|
|
|
|
{
|
|
|
|
guint8 * pb_sendMemBlock;
|
|
|
|
guint k;
|
|
|
|
guint8 frame1Size;
|
|
|
|
|
|
|
|
frame1Size = ( frameStart2 > frameStart1 ? frameStart2 : dataLength - frameStart1 );
|
|
|
|
|
|
|
|
|
|
|
|
pb_sendMemBlock = (guint8*) ep_alloc0( sizeof(guint8) * dataLength);
|
|
|
|
|
|
|
|
memcpy ( &pb_sendMemBlock[frameStart1], &byteStream[frameStart1], frame1Size );
|
|
|
|
|
|
|
|
for ( k = 0; k < (guint)(dataLength - frame1Size); k++)
|
|
|
|
pb_sendMemBlock [ k + frameStart2 ] = byteStream [ k + frameStart2 ] ^ scmUDID[ ( k % 6 ) ];
|
|
|
|
|
|
|
|
return pb_sendMemBlock;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* @brief Precompiled table for CRC8 values */
|
|
|
|
static const guint16 crc16_opensafety_precompiled[256] =
|
|
|
|
{
|
|
|
|
0x0000, 0x5935, 0xB26A, 0xEB5F, 0x3DE1, 0x64D4, 0x8F8B, 0xD6BE,
|
|
|
|
0x7BC2, 0x22F7, 0xC9A8, 0x909D, 0x4623, 0x1F16, 0xF449, 0xAD7C,
|
|
|
|
0xF784, 0xAEB1, 0x45EE, 0x1CDB, 0xCA65, 0x9350, 0x780F, 0x213A,
|
|
|
|
0x8C46, 0xD573, 0x3E2C, 0x6719, 0xB1A7, 0xE892, 0x03CD, 0x5AF8,
|
|
|
|
0xB63D, 0xEF08, 0x0457, 0x5D62, 0x8BDC, 0xD2E9, 0x39B6, 0x6083,
|
|
|
|
0xCDFF, 0x94CA, 0x7F95, 0x26A0, 0xF01E, 0xA92B, 0x4274, 0x1B41,
|
|
|
|
0x41B9, 0x188C, 0xF3D3, 0xAAE6, 0x7C58, 0x256D, 0xCE32, 0x9707,
|
|
|
|
0x3A7B, 0x634E, 0x8811, 0xD124, 0x079A, 0x5EAF, 0xB5F0, 0xECC5,
|
|
|
|
0x354F, 0x6C7A, 0x8725, 0xDE10, 0x08AE, 0x519B, 0xBAC4, 0xE3F1,
|
|
|
|
0x4E8D, 0x17B8, 0xFCE7, 0xA5D2, 0x736C, 0x2A59, 0xC106, 0x9833,
|
|
|
|
0xC2CB, 0x9BFE, 0x70A1, 0x2994, 0xFF2A, 0xA61F, 0x4D40, 0x1475,
|
|
|
|
0xB909, 0xE03C, 0x0B63, 0x5256, 0x84E8, 0xDDDD, 0x3682, 0x6FB7,
|
|
|
|
0x8372, 0xDA47, 0x3118, 0x682D, 0xBE93, 0xE7A6, 0x0CF9, 0x55CC,
|
|
|
|
0xF8B0, 0xA185, 0x4ADA, 0x13EF, 0xC551, 0x9C64, 0x773B, 0x2E0E,
|
|
|
|
0x74F6, 0x2DC3, 0xC69C, 0x9FA9, 0x4917, 0x1022, 0xFB7D, 0xA248,
|
|
|
|
0x0F34, 0x5601, 0xBD5E, 0xE46B, 0x32D5, 0x6BE0, 0x80BF, 0xD98A,
|
|
|
|
0x6A9E, 0x33AB, 0xD8F4, 0x81C1, 0x577F, 0x0E4A, 0xE515, 0xBC20,
|
|
|
|
0x115C, 0x4869, 0xA336, 0xFA03, 0x2CBD, 0x7588, 0x9ED7, 0xC7E2,
|
|
|
|
0x9D1A, 0xC42F, 0x2F70, 0x7645, 0xA0FB, 0xF9CE, 0x1291, 0x4BA4,
|
|
|
|
0xE6D8, 0xBFED, 0x54B2, 0x0D87, 0xDB39, 0x820C, 0x6953, 0x3066,
|
|
|
|
0xDCA3, 0x8596, 0x6EC9, 0x37FC, 0xE142, 0xB877, 0x5328, 0x0A1D,
|
|
|
|
0xA761, 0xFE54, 0x150B, 0x4C3E, 0x9A80, 0xC3B5, 0x28EA, 0x71DF,
|
|
|
|
0x2B27, 0x7212, 0x994D, 0xC078, 0x16C6, 0x4FF3, 0xA4AC, 0xFD99,
|
|
|
|
0x50E5, 0x09D0, 0xE28F, 0xBBBA, 0x6D04, 0x3431, 0xDF6E, 0x865B,
|
|
|
|
0x5FD1, 0x06E4, 0xEDBB, 0xB48E, 0x6230, 0x3B05, 0xD05A, 0x896F,
|
|
|
|
0x2413, 0x7D26, 0x9679, 0xCF4C, 0x19F2, 0x40C7, 0xAB98, 0xF2AD,
|
|
|
|
0xA855, 0xF160, 0x1A3F, 0x430A, 0x95B4, 0xCC81, 0x27DE, 0x7EEB,
|
|
|
|
0xD397, 0x8AA2, 0x61FD, 0x38C8, 0xEE76, 0xB743, 0x5C1C, 0x0529,
|
|
|
|
0xE9EC, 0xB0D9, 0x5B86, 0x02B3, 0xD40D, 0x8D38, 0x6667, 0x3F52,
|
|
|
|
0x922E, 0xCB1B, 0x2044, 0x7971, 0xAFCF, 0xF6FA, 0x1DA5, 0x4490,
|
|
|
|
0x1E68, 0x475D, 0xAC02, 0xF537, 0x2389, 0x7ABC, 0x91E3, 0xC8D6,
|
|
|
|
0x65AA, 0x3C9F, 0xD7C0, 0x8EF5, 0x584B, 0x017E, 0xEA21, 0xB314
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* @brief Calculates a CRC16 checksum for the given buffer with the polynom
|
|
|
|
* x^16 + x^14 + x^12 + x^11 + x^8 + x^5 + x^4 + x^2 + 1
|
|
|
|
* @param len the length of the given buffer
|
|
|
|
* @param pBuffer a pointer to a buffer of the given length
|
|
|
|
* @return the CRC16 checksum for the buffer
|
|
|
|
*/
|
|
|
|
static guint16 crc16_opensafety(guint32 len, guint8 * pBuffer, guint16 initCRC)
|
|
|
|
{
|
|
|
|
guint16 crc;
|
|
|
|
guint16 ulTab;
|
|
|
|
|
|
|
|
crc = initCRC;
|
|
|
|
while(len-- > 0)
|
|
|
|
{
|
|
|
|
ulTab = crc16_opensafety_precompiled[(*pBuffer++) ^ (crc >> 8)];
|
|
|
|
crc = (crc << 8) ^ ulTab;
|
|
|
|
}
|
|
|
|
|
|
|
|
return crc;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* @brief Precompiled table for CRC8 values */
|
|
|
|
static const guint8 crc8_opensafety_precompiled[256] =
|
|
|
|
{
|
|
|
|
0x00, 0x2F, 0x5E, 0x71, 0xBC, 0x93, 0xE2, 0xCD,
|
|
|
|
0x57, 0x78, 0x09, 0x26, 0xEB, 0xC4, 0xB5, 0x9A,
|
|
|
|
0xAE, 0x81, 0xF0, 0xDF, 0x12, 0x3D, 0x4C, 0x63,
|
|
|
|
0xF9, 0xD6, 0xA7, 0x88, 0x45, 0x6A, 0x1B, 0x34,
|
|
|
|
0x73, 0x5C, 0x2D, 0x02, 0xCF, 0xE0, 0x91, 0xBE,
|
|
|
|
0x24, 0x0B, 0x7A, 0x55, 0x98, 0xB7, 0xC6, 0xE9,
|
|
|
|
0xDD, 0xF2, 0x83, 0xAC, 0x61, 0x4E, 0x3F, 0x10,
|
|
|
|
0x8A, 0xA5, 0xD4, 0xFB, 0x36, 0x19, 0x68, 0x47,
|
|
|
|
0xE6, 0xC9, 0xB8, 0x97, 0x5A, 0x75, 0x04, 0x2B,
|
|
|
|
0xB1, 0x9E, 0xEF, 0xC0, 0x0D, 0x22, 0x53, 0x7C,
|
|
|
|
0x48, 0x67, 0x16, 0x39, 0xF4, 0xDB, 0xAA, 0x85,
|
|
|
|
0x1F, 0x30, 0x41, 0x6E, 0xA3, 0x8C, 0xFD, 0xD2,
|
|
|
|
0x95, 0xBA, 0xCB, 0xE4, 0x29, 0x06, 0x77, 0x58,
|
|
|
|
0xC2, 0xED, 0x9C, 0xB3, 0x7E, 0x51, 0x20, 0x0F,
|
|
|
|
0x3B, 0x14, 0x65, 0x4A, 0x87, 0xA8, 0xD9, 0xF6,
|
|
|
|
0x6C, 0x43, 0x32, 0x1D, 0xD0, 0xFF, 0x8E, 0xA1,
|
|
|
|
0xE3, 0xCC, 0xBD, 0x92, 0x5F, 0x70, 0x01, 0x2E,
|
|
|
|
0xB4, 0x9B, 0xEA, 0xC5, 0x08, 0x27, 0x56, 0x79,
|
|
|
|
0x4D, 0x62, 0x13, 0x3C, 0xF1, 0xDE, 0xAF, 0x80,
|
|
|
|
0x1A, 0x35, 0x44, 0x6B, 0xA6, 0x89, 0xF8, 0xD7,
|
|
|
|
0x90, 0xBF, 0xCE, 0xE1, 0x2C, 0x03, 0x72, 0x5D,
|
|
|
|
0xC7, 0xE8, 0x99, 0xB6, 0x7B, 0x54, 0x25, 0x0A,
|
|
|
|
0x3E, 0x11, 0x60, 0x4F, 0x82, 0xAD, 0xDC, 0xF3,
|
|
|
|
0x69, 0x46, 0x37, 0x18, 0xD5, 0xFA, 0x8B, 0xA4,
|
|
|
|
0x05, 0x2A, 0x5B, 0x74, 0xB9, 0x96, 0xE7, 0xC8,
|
|
|
|
0x52, 0x7D, 0x0C, 0x23, 0xEE, 0xC1, 0xB0, 0x9F,
|
|
|
|
0xAB, 0x84, 0xF5, 0xDA, 0x17, 0x38, 0x49, 0x66,
|
|
|
|
0xFC, 0xD3, 0xA2, 0x8D, 0x40, 0x6F, 0x1E, 0x31,
|
|
|
|
0x76, 0x59, 0x28, 0x07, 0xCA, 0xE5, 0x94, 0xBB,
|
|
|
|
0x21, 0x0E, 0x7F, 0x50, 0x9D, 0xB2, 0xC3, 0xEC,
|
|
|
|
0xD8, 0xF7, 0x86, 0xA9, 0x64, 0x4B, 0x3A, 0x15,
|
|
|
|
0x8F, 0xA0, 0xD1, 0xFE, 0x33, 0x1C, 0x6D, 0x42
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* @brief Calculates a CRC8 checksum for the given buffer with the polynom
|
|
|
|
* x^8 + x^5 + x^3 + x^2 + x + 1
|
|
|
|
* @param len the length of the given buffer
|
|
|
|
* @param pBuffer a pointer to a buffer of the given length
|
|
|
|
* @return the CRC8 checksum for the buffer
|
|
|
|
*/
|
|
|
|
static guint8 crc8_opensafety(guint32 len, guint8 * pBuffer, guint8 initCRC)
|
|
|
|
{
|
|
|
|
guint8 crc;
|
|
|
|
|
|
|
|
crc = initCRC;
|
|
|
|
while(len-- > 0)
|
|
|
|
{
|
2011-06-17 01:56:35 +00:00
|
|
|
crc = (guint8)(*pBuffer++) ^ crc;
|
2011-05-31 19:31:45 +00:00
|
|
|
crc = crc8_opensafety_precompiled[crc];
|
|
|
|
}
|
|
|
|
|
|
|
|
return crc;
|
|
|
|
}
|
|
|
|
|
2011-06-02 14:22:19 +00:00
|
|
|
static guint8 findSafetyFrame ( guint8 * pBuffer, guint32 length, guint u_Offset, guint *u_frameOffset, guint *u_frameLength )
|
2011-05-31 19:31:45 +00:00
|
|
|
{
|
|
|
|
guint n;
|
|
|
|
guint16 crc, calcCrc;
|
|
|
|
guint8 b_ID, b_Length, crcOffset, leftShifted;
|
|
|
|
gboolean found;
|
|
|
|
|
|
|
|
found = 0;
|
|
|
|
DISSECTOR_ASSERT ( u_Offset < ( u_Offset + length ) );
|
|
|
|
for ( n = u_Offset; n < ( u_Offset + length ); n++)
|
|
|
|
{
|
2011-06-17 01:56:35 +00:00
|
|
|
/* The ID byte must ALWAYS be the second byte, therefore 0 is invalid */
|
|
|
|
if ( n == 0 )
|
|
|
|
continue;
|
2011-05-31 19:31:45 +00:00
|
|
|
|
|
|
|
*u_frameLength = 0;
|
|
|
|
*u_frameOffset = 0;
|
|
|
|
|
|
|
|
crcOffset = 0;
|
|
|
|
b_ID = pBuffer [ n ];
|
|
|
|
b_Length = pBuffer [ n + 1 ];
|
|
|
|
|
|
|
|
/* 0xFF is often used, but always false, otherwise start detection, if the highest
|
|
|
|
* bit is set */
|
|
|
|
if ( ( b_ID != 0xFF ) && ( b_ID & 0x80 ) )
|
|
|
|
{
|
2011-06-17 01:56:35 +00:00
|
|
|
/* If the determined size could be bigger, than the data to be dissect,
|
|
|
|
* we have an error, return */
|
2011-05-31 19:31:45 +00:00
|
|
|
if ( ( b_Length + n ) > ( u_Offset + length ) )
|
|
|
|
continue;
|
|
|
|
|
|
|
|
leftShifted = b_ID >> 4;
|
|
|
|
/* An openSAFETY command has to have a high-byte range between 0x0A and 0x0E
|
|
|
|
* b_ID 0x80 took care of everything underneath, we check for 0x09 and 0x0F,
|
|
|
|
* as they remain the only values left, which are not valid */
|
|
|
|
if ( ( leftShifted == 0x09 ) || ( leftShifted == 0x0F ) )
|
|
|
|
continue;
|
|
|
|
|
|
|
|
/* Find CRC position and calculate checksum */
|
|
|
|
crc = 0;
|
|
|
|
calcCrc = 0;
|
|
|
|
crc = pBuffer [ n + 3 + b_Length ];
|
|
|
|
if ( b_Length > 8 ) {
|
|
|
|
crc += ( ( pBuffer [ n + 4 + b_Length ] ) << 8 );
|
|
|
|
crcOffset = 1;
|
|
|
|
if ( crc != 0x00 )
|
|
|
|
calcCrc = crc16_opensafety ( b_Length + 4, &pBuffer [ n - 1 ], 0 );
|
|
|
|
} else {
|
|
|
|
if ( crc != 0x00 )
|
|
|
|
calcCrc = crc8_opensafety ( b_Length + 4, &pBuffer [ n - 1 ], 0 );
|
|
|
|
}
|
|
|
|
|
|
|
|
if ( ( crc != 0x00 ) && ( crc ^ calcCrc ) == 0 )
|
|
|
|
{
|
|
|
|
/* We have found a Slim frame. Those are not correctly identified yet */
|
|
|
|
if ( ( b_ID >> 3 ) == ( OPENSAFETY_SLIM_SSDO_MESSAGE_TYPE >> 3 ) )
|
|
|
|
{
|
|
|
|
*u_frameOffset = ( n - 1 );
|
|
|
|
*u_frameLength = b_Length + 2 * crcOffset + 11;
|
|
|
|
found = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
*u_frameLength = 2 * b_Length + 2 * crcOffset + 11;
|
|
|
|
*u_frameOffset = ( n - 1 );
|
|
|
|
/* EPL SoC messages can be falsely detected as openSAFETY frames,
|
|
|
|
* so we check if both checksums have no lower byte of 0x00. This
|
|
|
|
* check remains, although SoC and SoA messages get sorted out in
|
|
|
|
* the dissector */
|
|
|
|
if ( pBuffer [ *u_frameOffset + *u_frameLength - 2 ] == 0x00 &&
|
|
|
|
pBuffer [ *u_frameOffset + *u_frameLength - 1 ] == 0x00 )
|
|
|
|
continue;
|
|
|
|
|
|
|
|
found = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return (found ? 1 : 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_opensafety_spdo_message(tvbuff_t *message_tvb, proto_tree *opensafety_tree,
|
|
|
|
guint8 * bytes, guint16 frameStart1, guint16 frameStart2 , gboolean validSCMUDID)
|
|
|
|
{
|
|
|
|
proto_item *item;
|
|
|
|
proto_tree *spdo_tree;
|
|
|
|
guint16 ct, taddr;
|
|
|
|
guint dataLength;
|
|
|
|
guint8 tr, b_ID;
|
|
|
|
|
|
|
|
dataLength = tvb_get_guint8(message_tvb, OSS_FRAME_POS_LEN + frameStart1);
|
|
|
|
b_ID = ( bytes[frameStart1 + 1] >> 3 ) << 3;
|
|
|
|
|
|
|
|
ct = bytes[frameStart1 + 2];
|
|
|
|
if ( validSCMUDID )
|
|
|
|
ct = (guint16)(bytes[frameStart2 + 2] << 8) + (bytes[frameStart1 + 2]);
|
|
|
|
|
|
|
|
/* taddr is the 4th octet in the second frame */
|
|
|
|
taddr = OSS_FRAME_ADDR(bytes, frameStart2 + 3);
|
|
|
|
tr = ( bytes[frameStart2 + 4] << 2 ) >> 2;
|
|
|
|
|
|
|
|
/* An SPDO get's always send by the producer, to everybody else */
|
|
|
|
PACKET_SEND_FROM_TO_ALL( pinfo, OSS_FRAME_ADDR(bytes, frameStart1), OSS_FRAME_POS_ADDR + frameStart1 );
|
|
|
|
|
|
|
|
if ( b_ID == OPENSAFETY_MSG_SPDO_DATA_WITH_TIME_RESPONSE )
|
|
|
|
proto_tree_add_boolean(opensafety_tree, hf_oss_msgtype, message_tvb, OSS_FRAME_POS_ID + frameStart1, 1, OPENSAFETY_RESPONSE);
|
|
|
|
else if ( b_ID == OPENSAFETY_MSG_SPDO_DATA_WITH_TIME_REQUEST || b_ID == OPENSAFETY_MSG_SPDO_DATA_ONLY )
|
|
|
|
proto_tree_add_boolean(opensafety_tree, hf_oss_msgtype, message_tvb, OSS_FRAME_POS_ID + frameStart1, 1, OPENSAFETY_REQUEST);
|
|
|
|
|
|
|
|
item = proto_tree_add_uint_format_value(opensafety_tree, hf_oss_msg, message_tvb, OSS_FRAME_POS_ID + frameStart1, 1,
|
|
|
|
b_ID, "%s", val_to_str(b_ID, message_type_values, "Unknown") );
|
|
|
|
|
|
|
|
spdo_tree = proto_item_add_subtree(item, ett_opensafety_ssdo);
|
|
|
|
|
|
|
|
proto_tree_add_uint(spdo_tree, hf_oss_spdo_producer, message_tvb, OSS_FRAME_POS_ADDR + frameStart1, 2, OSS_FRAME_ADDR(bytes, frameStart1));
|
|
|
|
|
|
|
|
if ( b_ID == OPENSAFETY_MSG_SPDO_DATA_WITH_TIME_REQUEST )
|
|
|
|
{
|
|
|
|
item = proto_tree_add_uint_format_value(spdo_tree, hf_oss_spdo_time_value_sn, message_tvb, 0, 0, ct,
|
|
|
|
"0x%04X [%d] (%s)", ct, ct, (validSCMUDID ? "Complete" : "Low byte only"));
|
|
|
|
PROTO_ITEM_SET_GENERATED(item);
|
|
|
|
|
|
|
|
proto_tree_add_uint(spdo_tree, hf_oss_spdo_time_request, message_tvb, OSS_FRAME_POS_ADDR + frameStart2 + 4, 1, tr);
|
|
|
|
proto_tree_add_uint(spdo_tree, hf_oss_spdo_time_request_from, message_tvb, OSS_FRAME_POS_ADDR + frameStart2 + 3, 2, taddr);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
item = proto_tree_add_uint_format_value(spdo_tree, hf_oss_spdo_producer_time, message_tvb, 0, 0, ct,
|
|
|
|
"0x%04X [%d] (%s)", ct, ct, (validSCMUDID ? "Complete" : "Low byte only"));
|
|
|
|
PROTO_ITEM_SET_GENERATED(item);
|
|
|
|
|
|
|
|
if ( b_ID == OPENSAFETY_MSG_SPDO_DATA_WITH_TIME_RESPONSE )
|
|
|
|
{
|
|
|
|
proto_tree_add_uint(spdo_tree, hf_oss_spdo_time_request, message_tvb, OSS_FRAME_POS_ADDR + frameStart2 + 4, 1, tr);
|
|
|
|
proto_tree_add_uint(spdo_tree, hf_oss_spdo_time_request_to, message_tvb, OSS_FRAME_POS_ADDR + frameStart2 + 3, 2, taddr);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if ( dataLength > 0 )
|
|
|
|
{
|
|
|
|
proto_tree_add_bytes(spdo_tree, hf_oss_spdo_payload, message_tvb, OSS_FRAME_POS_ID + 3,
|
|
|
|
dataLength, &bytes[frameStart1 + 4]);
|
|
|
|
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_opensafety_ssdo_message(tvbuff_t *message_tvb , packet_info * pinfo, proto_tree *opensafety_tree ,
|
|
|
|
guint8 * bytes, guint16 frameStart1, guint16 frameStart2 , gboolean validSCMUDID)
|
|
|
|
{
|
|
|
|
proto_item *item;
|
|
|
|
proto_tree *ssdo_tree, *ssdo_sacmd_tree;
|
|
|
|
guint16 taddr = 0 ;
|
|
|
|
guint32 abortcode;
|
|
|
|
guint8 db0Offset, db0, sacmd, payloadOffset, payloadSize, n;
|
|
|
|
guint dataLength;
|
|
|
|
gboolean isRequest;
|
|
|
|
guint8 * payload;
|
|
|
|
|
|
|
|
dataLength = tvb_get_guint8(message_tvb, OSS_FRAME_POS_LEN + frameStart1);
|
|
|
|
|
|
|
|
db0Offset = frameStart1 + OSS_FRAME_POS_DATA;
|
|
|
|
db0 = bytes[db0Offset];
|
|
|
|
sacmd = db0;
|
|
|
|
|
|
|
|
if ( ( sacmd & OPENSAFETY_SSDO_SACMD_TGL ) == OPENSAFETY_SSDO_SACMD_TGL )
|
|
|
|
sacmd = sacmd & ( ~OPENSAFETY_SSDO_SACMD_TGL );
|
|
|
|
|
|
|
|
isRequest = FALSE;
|
|
|
|
if ( OSS_FRAME_ID(bytes, frameStart1) == OPENSAFETY_MSG_SSDO_SERVICE_REQUEST || OSS_FRAME_ID(bytes, frameStart1) == OPENSAFETY_MSG_SSDO_SLIM_SERVICE_REQUEST )
|
|
|
|
isRequest = TRUE;
|
|
|
|
|
|
|
|
if ( validSCMUDID )
|
|
|
|
{
|
|
|
|
/* taddr is the 4th octet in the second frame */
|
|
|
|
taddr = OSS_FRAME_ADDR(bytes, frameStart2 + 3);
|
|
|
|
|
|
|
|
PACKET_SEND_FROM_TO( pinfo, OSS_FRAME_ADDR(bytes, frameStart1), frameStart1, taddr, frameStart2 + 3);
|
|
|
|
}
|
|
|
|
else if ( ! isRequest )
|
|
|
|
{
|
|
|
|
PACKET_RECEIVED_BY(pinfo, OSS_FRAME_ADDR(bytes, frameStart1), frameStart1 );
|
|
|
|
}
|
|
|
|
|
|
|
|
if ( ( OSS_FRAME_ID(bytes, frameStart1) == OPENSAFETY_MSG_SSDO_SERVICE_RESPONSE ) ||
|
|
|
|
( OSS_FRAME_ID(bytes, frameStart1) == OPENSAFETY_MSG_SSDO_SLIM_SERVICE_RESPONSE ) )
|
|
|
|
proto_tree_add_boolean(opensafety_tree, hf_oss_msgtype, message_tvb, OSS_FRAME_POS_ID + frameStart1, 1, OPENSAFETY_RESPONSE);
|
|
|
|
else
|
|
|
|
proto_tree_add_boolean(opensafety_tree, hf_oss_msgtype, message_tvb, OSS_FRAME_POS_ID + frameStart1, 1, OPENSAFETY_REQUEST);
|
|
|
|
|
|
|
|
item = proto_tree_add_uint_format_value(opensafety_tree, hf_oss_msg, message_tvb, OSS_FRAME_POS_ID + frameStart1, 1,
|
|
|
|
OSS_FRAME_ID(bytes, frameStart1), "%s", val_to_str(OSS_FRAME_ID(bytes, frameStart1), message_type_values, "Unknown") );
|
|
|
|
|
|
|
|
ssdo_tree = proto_item_add_subtree(item, ett_opensafety_ssdo);
|
|
|
|
|
|
|
|
if ( isRequest )
|
|
|
|
{
|
|
|
|
if ( validSCMUDID )
|
|
|
|
{
|
|
|
|
item = proto_tree_add_uint(ssdo_tree, hf_oss_ssdo_server, message_tvb, frameStart1, 2, OSS_FRAME_ADDR(bytes, frameStart1));
|
|
|
|
item = proto_tree_add_uint(ssdo_tree, hf_oss_ssdo_client, message_tvb, frameStart2 + 3, 2, taddr);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
item = proto_tree_add_uint(ssdo_tree, hf_oss_ssdo_server, message_tvb, frameStart1, 2, OSS_FRAME_ADDR(bytes, frameStart1));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if ( ! isRequest )
|
|
|
|
{
|
|
|
|
if ( validSCMUDID )
|
|
|
|
{
|
|
|
|
item = proto_tree_add_uint(ssdo_tree, hf_oss_ssdo_client, message_tvb, frameStart1, 2, OSS_FRAME_ADDR(bytes, frameStart1));
|
|
|
|
item = proto_tree_add_uint(ssdo_tree, hf_oss_ssdo_server, message_tvb, frameStart2 + 3, 2, taddr);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
item = proto_tree_add_uint(ssdo_tree, hf_oss_ssdo_client, message_tvb, frameStart1, 2, OSS_FRAME_ADDR(bytes, frameStart1));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
item = proto_tree_add_uint(ssdo_tree, hf_oss_ssdo_sacmd, message_tvb, db0Offset, 1, sacmd);
|
|
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, ", SACMD: %s", val_to_str(sacmd, ssdo_sacmd_values, " "));
|
|
|
|
|
|
|
|
ssdo_sacmd_tree = proto_item_add_subtree(item, ett_opensafety_ssdo_sacmd);
|
|
|
|
item = proto_tree_add_boolean(ssdo_sacmd_tree, hf_oss_ssdo_sacmd_block_transfer, message_tvb, db0Offset, 1, db0);
|
|
|
|
item = proto_tree_add_boolean(ssdo_sacmd_tree, hf_oss_ssdo_sacmd_end_segment, message_tvb, db0Offset, 1, db0);
|
|
|
|
item = proto_tree_add_boolean(ssdo_sacmd_tree, hf_oss_ssdo_sacmd_initiate, message_tvb, db0Offset, 1, db0);
|
|
|
|
item = proto_tree_add_boolean(ssdo_sacmd_tree, hf_oss_ssdo_sacmd_toggle, message_tvb, db0Offset, 1, db0);
|
|
|
|
item = proto_tree_add_boolean(ssdo_sacmd_tree, hf_oss_ssdo_sacmd_segmentation, message_tvb, db0Offset, 1, db0);
|
|
|
|
item = proto_tree_add_boolean(ssdo_sacmd_tree, hf_oss_ssdo_sacmd_abort_transfer, message_tvb, db0Offset, 1, db0);
|
|
|
|
item = proto_tree_add_boolean(ssdo_sacmd_tree, hf_oss_ssdo_sacmd_access_type, message_tvb, db0Offset, 1, db0);
|
|
|
|
|
|
|
|
if ( (OSS_FRAME_ID(bytes, frameStart1) ^ OPENSAFETY_MSG_SNMT_SN_RESET_GUARDING_SCM) == 0 )
|
|
|
|
{
|
|
|
|
item = proto_tree_add_uint(ssdo_tree, hf_oss_snmt_master, message_tvb, frameStart1 + OSS_FRAME_POS_ADDR, 2, OSS_FRAME_ADDR(bytes, frameStart1));
|
|
|
|
if ( validSCMUDID )
|
|
|
|
item = proto_tree_add_uint(ssdo_tree, hf_oss_snmt_slave, message_tvb, frameStart2 + OSS_FRAME_POS_ADDR + 2, 2, taddr);
|
|
|
|
}
|
|
|
|
|
|
|
|
payloadOffset = db0Offset + 1;
|
|
|
|
/* When the following clause is met, DB1,2 contain the SOD index, and DB3 the SOD subindex */
|
|
|
|
if ( ( ( sacmd & OPENSAFETY_SSDO_SACMD_INI ) == OPENSAFETY_SSDO_SACMD_INI ) ||
|
|
|
|
( sacmd == OPENSAFETY_MSG_SSDO_UPLOAD_SEGMENT_MIDDLE ) ||
|
|
|
|
( sacmd == OPENSAFETY_MSG_SSDO_UPLOAD_SEGMENT_END ) ||
|
|
|
|
( sacmd == OPENSAFETY_MSG_SSDO_ABORT )
|
|
|
|
)
|
|
|
|
{
|
|
|
|
item = proto_tree_add_uint(ssdo_tree, hf_oss_ssdo_sod_index, message_tvb, db0Offset + 1, 2,
|
|
|
|
((guint16)(bytes[db0Offset + 2] << 8) + bytes[db0Offset + 1]));
|
|
|
|
item = proto_tree_add_uint(ssdo_tree, hf_oss_ssdo_sod_subindex, message_tvb, db0Offset + 3, 1, bytes[db0Offset + 3]);
|
|
|
|
payloadOffset += 3;
|
|
|
|
}
|
|
|
|
|
|
|
|
if ( sacmd == OPENSAFETY_MSG_SSDO_ABORT )
|
|
|
|
{
|
|
|
|
abortcode = 0;
|
|
|
|
for ( n = 0; n < 4; n++ )
|
|
|
|
abortcode += ( bytes[frameStart1 + OSS_FRAME_POS_DATA + 4 + n] ) << (8 * n);
|
|
|
|
|
|
|
|
item = proto_tree_add_uint_format_value(ssdo_tree, hf_oss_ssdo_abort_code, message_tvb, payloadOffset, 4, abortcode,
|
|
|
|
"0x%04X %04X - %s", (guint16)(abortcode >> 16), (guint16)(abortcode),
|
|
|
|
val_to_str(abortcode, abort_codes, "Unknown"));
|
|
|
|
|
|
|
|
|
|
|
|
} else if ( ( isRequest && (sacmd == OPENSAFETY_MSG_SSDO_DOWNLOAD_INITIATE_SEGMENTED ||
|
|
|
|
sacmd == OPENSAFETY_MSG_SSDO_DOWNLOAD_INITIATE_EXPEDITED ||
|
|
|
|
sacmd == OPENSAFETY_MSG_SSDO_DOWNLOAD_SEGMENT_MIDDLE ||
|
|
|
|
sacmd == OPENSAFETY_MSG_SSDO_DOWNLOAD_SEGMENT_END
|
|
|
|
) ) ||
|
|
|
|
( !isRequest && (sacmd == OPENSAFETY_MSG_SSDO_UPLOAD_INITIATE_EXPEDITED ||
|
|
|
|
sacmd == OPENSAFETY_MSG_SSDO_UPLOAD_INITIATE_SEGMENTED ||
|
|
|
|
sacmd == OPENSAFETY_MSG_SSDO_UPLOAD_SEGMENT_MIDDLE ||
|
|
|
|
sacmd == OPENSAFETY_MSG_SSDO_UPLOAD_SEGMENT_END
|
|
|
|
) )
|
|
|
|
)
|
|
|
|
{
|
|
|
|
if ( ( sacmd == OPENSAFETY_MSG_SSDO_DOWNLOAD_INITIATE_SEGMENTED ) || ( sacmd == OPENSAFETY_MSG_SSDO_UPLOAD_INITIATE_SEGMENTED ) )
|
|
|
|
{
|
|
|
|
payloadOffset += 4;
|
|
|
|
/* using payloadSize as helper var for for-loop */
|
|
|
|
payloadSize = dataLength - (payloadOffset - db0Offset);
|
|
|
|
payload = (guint8*)ep_alloc(sizeof(guint8*)*payloadSize);
|
|
|
|
for ( n = 0; n < payloadSize; n++)
|
|
|
|
payload[payloadSize - n - 1] = bytes[frameStart1 + OSS_FRAME_POS_DATA + (payloadOffset - db0Offset) + n];
|
|
|
|
|
|
|
|
/* reading real size */
|
|
|
|
payloadSize = 0;
|
|
|
|
for ( n = 0; n < 4; n++ )
|
|
|
|
{
|
|
|
|
payloadSize += ( bytes[frameStart1 + OSS_FRAME_POS_DATA + 4 + n] ) << (8 * n);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
item = proto_tree_add_uint_format_value(ssdo_tree, hf_oss_ssdo_payload_size, message_tvb, payloadOffset - 4, 4,
|
|
|
|
payloadSize, "%d octets total (%d octets in this frame)", payloadSize, dataLength - (payloadOffset - db0Offset));
|
|
|
|
item = proto_tree_add_bytes(ssdo_tree, hf_oss_ssdo_payload, message_tvb, payloadOffset,
|
|
|
|
dataLength - (payloadOffset - db0Offset), payload );
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
payloadSize = dataLength - (payloadOffset - db0Offset);
|
|
|
|
payload = (guint8*)ep_alloc(sizeof(guint8*)*payloadSize);
|
|
|
|
for ( n = 0; n < payloadSize; n++)
|
|
|
|
payload[payloadSize - n - 1] = bytes[frameStart1 + OSS_FRAME_POS_DATA + (payloadOffset - db0Offset) + n];
|
|
|
|
|
|
|
|
item = proto_tree_add_uint_format_value(ssdo_tree, hf_oss_ssdo_payload_size, message_tvb, 0, 0, payloadSize,
|
|
|
|
"%d octets", payloadSize);
|
|
|
|
PROTO_ITEM_SET_GENERATED(item);
|
|
|
|
item = proto_tree_add_bytes(ssdo_tree, hf_oss_ssdo_payload, message_tvb, payloadOffset, payloadSize, payload );
|
|
|
|
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_opensafety_snmt_message(tvbuff_t *message_tvb, packet_info *pinfo , proto_tree *opensafety_tree,
|
|
|
|
guint8 * bytes, guint16 frameStart1, guint16 frameStart2 )
|
|
|
|
{
|
|
|
|
proto_item *item;
|
|
|
|
proto_tree *snmt_tree ;
|
|
|
|
guint16 addr, taddr;
|
|
|
|
guint8 db0;
|
|
|
|
guint dataLength;
|
|
|
|
|
|
|
|
dataLength = OSS_FRAME_LENGTH(bytes, frameStart1);
|
|
|
|
|
|
|
|
/* addr is the first field, as well as the recipient of the message */
|
|
|
|
addr = OSS_FRAME_ADDR(bytes, frameStart1);
|
|
|
|
/* taddr is the 4th octet in the second frame */
|
|
|
|
taddr = OSS_FRAME_ADDR(bytes, frameStart2 + 3);
|
|
|
|
|
|
|
|
db0 = -1;
|
|
|
|
if (dataLength > 0)
|
|
|
|
db0 = bytes[OSS_FRAME_POS_DATA];
|
|
|
|
|
|
|
|
if ( ( (OSS_FRAME_ID(bytes, frameStart1) ^ OPENSAFETY_MSG_SNMT_SERVICE_RESPONSE) == 0 ) &&
|
|
|
|
( (db0 ^ OPENSAFETY_MSG_SNMT_EXT_SCM_SET_TO_STOP) == 0 || (db0 ^ OPENSAFETY_MSG_SNMT_EXT_SCM_SET_TO_OP) == 0 ) )
|
|
|
|
{
|
|
|
|
PACKET_RECEIVED_BY( pinfo, addr, OSS_FRAME_POS_ADDR + frameStart1 );
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
PACKET_SEND_FROM_TO ( pinfo, taddr, frameStart2 + 3, addr, OSS_FRAME_POS_ADDR + frameStart1 );
|
|
|
|
}
|
|
|
|
|
|
|
|
if ( ( OSS_FRAME_ID(bytes, frameStart1) == OPENSAFETY_MSG_SNMT_RESPONSE_UDID ) ||
|
|
|
|
( OSS_FRAME_ID(bytes, frameStart1) == OPENSAFETY_MSG_SNMT_SADR_ASSIGNED ) ||
|
|
|
|
( OSS_FRAME_ID(bytes, frameStart1) == OPENSAFETY_MSG_SNMT_SERVICE_RESPONSE ) )
|
|
|
|
proto_tree_add_boolean(opensafety_tree, hf_oss_msgtype, message_tvb, OSS_FRAME_POS_ID + frameStart1, 1, OPENSAFETY_RESPONSE);
|
|
|
|
else
|
|
|
|
proto_tree_add_boolean(opensafety_tree, hf_oss_msgtype, message_tvb, OSS_FRAME_POS_ID + frameStart1, 1, OPENSAFETY_REQUEST);
|
|
|
|
|
|
|
|
item = proto_tree_add_uint_format_value(opensafety_tree, hf_oss_msg, message_tvb, OSS_FRAME_POS_ID + frameStart1, 1,
|
|
|
|
OSS_FRAME_ID(bytes, frameStart1), "%s", val_to_str(OSS_FRAME_ID(bytes, frameStart1), message_type_values, "Unknown") );
|
|
|
|
|
|
|
|
snmt_tree = proto_item_add_subtree(item, ett_opensafety_snmt);
|
|
|
|
|
|
|
|
if ( (OSS_FRAME_ID(bytes, frameStart1) ^ OPENSAFETY_MSG_SNMT_SN_RESET_GUARDING_SCM) == 0 )
|
|
|
|
{
|
|
|
|
item = proto_tree_add_uint(snmt_tree, hf_oss_snmt_master, message_tvb, OSS_FRAME_POS_ADDR + frameStart1, 2, addr);
|
|
|
|
item = proto_tree_add_uint(snmt_tree, hf_oss_snmt_slave, message_tvb, frameStart2 + 3, 2, taddr);
|
|
|
|
}
|
|
|
|
else if ( (OSS_FRAME_ID(bytes, frameStart1) ^ OPENSAFETY_MSG_SNMT_SERVICE_RESPONSE) == 0 )
|
|
|
|
{
|
|
|
|
item = proto_tree_add_uint(snmt_tree, hf_oss_snmt_service_id, message_tvb, OSS_FRAME_POS_DATA + frameStart1, 1, db0);
|
|
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, ", %s", val_to_str(db0, message_service_type, " "));
|
|
|
|
|
|
|
|
item = proto_tree_add_uint(snmt_tree, hf_oss_snmt_master, message_tvb, OSS_FRAME_POS_ADDR + frameStart1, 2, addr);
|
|
|
|
item = proto_tree_add_uint(snmt_tree, hf_oss_snmt_slave, message_tvb, frameStart2 + 3, 2, taddr);
|
|
|
|
if ( (db0 ^ OPENSAFETY_MSG_SNMT_EXT_SN_FAIL) == 0 )
|
|
|
|
{
|
|
|
|
item = proto_tree_add_item(snmt_tree, hf_oss_snmt_error_group, message_tvb, OSS_FRAME_POS_DATA + frameStart1 + 1, 1, FALSE);
|
|
|
|
item = proto_tree_add_item(snmt_tree, hf_oss_snmt_error_code, message_tvb, OSS_FRAME_POS_DATA + frameStart1 + 2, 1, FALSE);
|
|
|
|
}
|
|
|
|
else if ( (db0 ^ OPENSAFETY_MSG_SNMT_EXT_SN_ASSIGNED_UDID_SCM) == 0 )
|
|
|
|
{
|
|
|
|
proto_tree_add_ether(snmt_tree, hf_oss_snmt_udid, message_tvb, OSS_FRAME_POS_DATA + frameStart1 + 1,
|
|
|
|
6, tvb_get_ptr(message_tvb, OSS_FRAME_POS_DATA + frameStart1 + 1, 6));
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
else if ( (OSS_FRAME_ID(bytes, frameStart1) ^ OPENSAFETY_MSG_SNMT_SERVICE_REQUEST) == 0 )
|
|
|
|
{
|
|
|
|
item = proto_tree_add_uint(snmt_tree, hf_oss_snmt_service_id, message_tvb, OSS_FRAME_POS_DATA + frameStart1, 1, db0);
|
|
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, ", %s", val_to_str(db0, message_service_type, " "));
|
|
|
|
|
|
|
|
if ( (db0 ^ OPENSAFETY_MSG_SNMT_EXT_SCM_SET_TO_STOP) == 0 || (db0 ^ OPENSAFETY_MSG_SNMT_EXT_SCM_SET_TO_OP) == 0 )
|
|
|
|
{
|
|
|
|
item = proto_tree_add_uint(snmt_tree, hf_oss_snmt_scm, message_tvb, OSS_FRAME_POS_ADDR + frameStart1, 2, addr);
|
|
|
|
item = proto_tree_add_uint(snmt_tree, hf_oss_snmt_tool, message_tvb, frameStart2 + 3, 2, taddr);
|
|
|
|
}
|
|
|
|
else if ( (db0 ^ OPENSAFETY_MSG_SNMT_EXT_SN_ASSIGN_UDID_SCM) == 0 )
|
|
|
|
{
|
|
|
|
item = proto_tree_add_uint(snmt_tree, hf_oss_snmt_master, message_tvb, OSS_FRAME_POS_ADDR + frameStart1, 2, addr);
|
|
|
|
item = proto_tree_add_uint(snmt_tree, hf_oss_snmt_slave, message_tvb, frameStart2 + 3, 2, taddr);
|
|
|
|
proto_tree_add_ether(snmt_tree, hf_oss_snmt_udid, message_tvb, OSS_FRAME_POS_DATA + frameStart1 + 1,
|
|
|
|
6, tvb_get_ptr(message_tvb, OSS_FRAME_POS_DATA + frameStart1 + 1, 6));
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
item = proto_tree_add_uint(snmt_tree, hf_oss_snmt_master, message_tvb, OSS_FRAME_POS_ADDR + frameStart1, 2, addr);
|
|
|
|
item = proto_tree_add_uint(snmt_tree, hf_oss_snmt_slave, message_tvb, frameStart2 + 3, 2, taddr);
|
|
|
|
if ( (db0 ^ OPENSAFETY_MSG_SNMT_EXT_SN_SET_TO_OP) == 0 )
|
|
|
|
{
|
|
|
|
item = proto_tree_add_bytes(snmt_tree, hf_oss_snmt_timestamp, message_tvb, OSS_FRAME_POS_DATA + frameStart1 + 1, 4,
|
|
|
|
(bytes + frameStart1 + OSS_FRAME_POS_DATA + 1));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if ( (OSS_FRAME_ID(bytes, frameStart1) ^ OPENSAFETY_MSG_SNMT_SADR_ASSIGNED) == 0 )
|
|
|
|
{
|
|
|
|
item = proto_tree_add_uint(snmt_tree, hf_oss_snmt_master, message_tvb, OSS_FRAME_POS_ADDR + frameStart1, 2, addr);
|
|
|
|
item = proto_tree_add_uint(snmt_tree, hf_oss_snmt_slave, message_tvb, frameStart2 + 3, 2, taddr);
|
|
|
|
|
|
|
|
if (dataLength > 0)
|
|
|
|
proto_tree_add_ether(snmt_tree, hf_oss_snmt_udid, message_tvb,
|
|
|
|
OSS_FRAME_POS_DATA + frameStart1, 6, tvb_get_ptr(message_tvb, OSS_FRAME_POS_DATA + frameStart1, 6));
|
|
|
|
|
|
|
|
}
|
|
|
|
else if ( (OSS_FRAME_ID(bytes, frameStart1) ^ OPENSAFETY_MSG_SNMT_ASSIGN_SADR) == 0 )
|
|
|
|
{
|
|
|
|
item = proto_tree_add_uint(snmt_tree, hf_oss_snmt_slave, message_tvb, OSS_FRAME_POS_ADDR + frameStart1, 2, addr);
|
|
|
|
item = proto_tree_add_uint(snmt_tree, hf_oss_snmt_master, message_tvb, frameStart2 + 3, 2, taddr);
|
|
|
|
|
|
|
|
if (dataLength > 0)
|
|
|
|
proto_tree_add_ether(snmt_tree, hf_oss_snmt_udid, message_tvb,
|
|
|
|
OSS_FRAME_POS_DATA + frameStart1, 6, tvb_get_ptr(message_tvb, OSS_FRAME_POS_DATA + frameStart1, 6));
|
|
|
|
|
|
|
|
}
|
|
|
|
else if ( (OSS_FRAME_ID(bytes, frameStart1) ^ OPENSAFETY_MSG_SNMT_RESPONSE_UDID) == 0 )
|
|
|
|
{
|
|
|
|
item = proto_tree_add_uint(snmt_tree, hf_oss_snmt_master, message_tvb, OSS_FRAME_POS_ADDR + frameStart1, 2, addr);
|
|
|
|
item = proto_tree_add_uint(snmt_tree, hf_oss_snmt_slave, message_tvb, frameStart2 + 3, 2, taddr);
|
|
|
|
|
|
|
|
if (dataLength > 0)
|
|
|
|
proto_tree_add_ether(snmt_tree, hf_oss_snmt_udid, message_tvb,
|
|
|
|
OSS_FRAME_POS_DATA + frameStart1, 6, tvb_get_ptr(message_tvb, OSS_FRAME_POS_DATA + frameStart1, 6));
|
|
|
|
|
|
|
|
}
|
|
|
|
else if ( (OSS_FRAME_ID(bytes, frameStart1) ^ OPENSAFETY_MSG_SNMT_REQUEST_UDID) == 0 )
|
|
|
|
{
|
|
|
|
item = proto_tree_add_uint(snmt_tree, hf_oss_snmt_slave, message_tvb, OSS_FRAME_POS_ADDR + frameStart1, 2, addr);
|
|
|
|
item = proto_tree_add_uint(snmt_tree, hf_oss_snmt_master, message_tvb, frameStart2 + 3, 2, taddr);
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
static guint8 opensafety_get_scm_udid(guint8 * scmUDID )
|
|
|
|
{
|
|
|
|
if ( strlen(global_scm_udid) != (2*6 + 5) )
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
return stringToBytes(global_scm_udid, scmUDID, 6);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_opensafety_checksum(tvbuff_t *message_tvb, proto_tree *opensafety_tree ,
|
|
|
|
guint8 * bytes, guint16 frameStart1 )
|
|
|
|
{
|
|
|
|
guint16 frameCrc;
|
|
|
|
guint16 calcCrc;
|
|
|
|
guint dataLength;
|
|
|
|
proto_item * item;
|
|
|
|
proto_tree *checksum_tree;
|
|
|
|
gint start;
|
|
|
|
gint length;
|
|
|
|
|
|
|
|
dataLength = OSS_FRAME_LENGTH(bytes, frameStart1);
|
|
|
|
start = OSS_FRAME_POS_DATA + dataLength + frameStart1;
|
|
|
|
frameCrc = bytes[start];
|
|
|
|
|
|
|
|
if (OSS_FRAME_LENGTH(bytes, frameStart1) > OSS_PAYLOAD_MAXSIZE_FOR_CRC8)
|
|
|
|
frameCrc += (bytes[start + 1] << 8);
|
|
|
|
|
|
|
|
length = (dataLength > OSS_PAYLOAD_MAXSIZE_FOR_CRC8 ? OPENSAFETY_CHECKSUM_CRC16 : OPENSAFETY_CHECKSUM_CRC8);
|
|
|
|
item = proto_tree_add_uint(opensafety_tree, hf_oss_crc, message_tvb, start, length, frameCrc);
|
|
|
|
|
|
|
|
checksum_tree = proto_item_add_subtree(item, ett_opensafety_checksum);
|
|
|
|
|
|
|
|
if ( dataLength > OSS_PAYLOAD_MAXSIZE_FOR_CRC8 )
|
|
|
|
calcCrc = crc16_opensafety(dataLength + 4, &bytes[frameStart1], 0);
|
|
|
|
else
|
|
|
|
calcCrc = crc8_opensafety(dataLength + 4, &bytes[frameStart1], 0);
|
|
|
|
|
|
|
|
item = proto_tree_add_boolean(checksum_tree, hf_oss_crc_valid, message_tvb, start, length, (frameCrc == calcCrc));
|
|
|
|
PROTO_ITEM_SET_GENERATED(item);
|
|
|
|
/* using the defines, as the values can change */
|
|
|
|
item = proto_tree_add_uint(checksum_tree, hf_oss_crc_type, message_tvb, start, length,
|
|
|
|
( dataLength > OSS_PAYLOAD_MAXSIZE_FOR_CRC8 ? OPENSAFETY_CHECKSUM_CRC16 : OPENSAFETY_CHECKSUM_CRC8 ) );
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
dissect_opensafety_message(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *opensafety_tree, gboolean b_frame2First, guint8 u_nrInPackage)
|
|
|
|
{
|
|
|
|
guint8 type, b_ID;
|
|
|
|
guint length;
|
|
|
|
guint16 frameStart1, frameStart2;
|
|
|
|
guint8 * bytes, *scmUDID;
|
|
|
|
gboolean validSCMUDID;
|
|
|
|
proto_item * item;
|
|
|
|
|
|
|
|
length = tvb_length(message_tvb);
|
|
|
|
|
|
|
|
bytes = (guint8 *)ep_tvb_memdup(message_tvb, 0, length);
|
|
|
|
|
|
|
|
if ( b_frame2First )
|
|
|
|
{
|
|
|
|
frameStart1 = findFrame1Position (length, bytes );
|
|
|
|
frameStart2 = 0;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
frameStart1 = 0;
|
|
|
|
frameStart2 = ((OSS_FRAME_LENGTH(bytes, frameStart1) - 1) +
|
|
|
|
(OSS_FRAME_LENGTH(bytes, frameStart1) > OSS_PAYLOAD_MAXSIZE_FOR_CRC8 ? OSS_SLIM_FRAME2_WITH_CRC16 : OSS_SLIM_FRAME2_WITH_CRC8));
|
|
|
|
}
|
|
|
|
|
|
|
|
if ( ( OSS_FRAME_ID(bytes, frameStart1) & OPENSAFETY_SLIM_SSDO_MESSAGE_TYPE ) == OPENSAFETY_SLIM_SSDO_MESSAGE_TYPE )
|
|
|
|
type = OPENSAFETY_SLIM_SSDO_MESSAGE_TYPE;
|
|
|
|
else if ( ( OSS_FRAME_ID(bytes, frameStart1) & OPENSAFETY_SSDO_MESSAGE_TYPE ) == OPENSAFETY_SSDO_MESSAGE_TYPE )
|
|
|
|
type = OPENSAFETY_SSDO_MESSAGE_TYPE;
|
|
|
|
else if ( ( OSS_FRAME_ID(bytes, frameStart1) & OPENSAFETY_SPDO_MESSAGE_TYPE ) == OPENSAFETY_SPDO_MESSAGE_TYPE )
|
|
|
|
type = OPENSAFETY_SPDO_MESSAGE_TYPE;
|
|
|
|
else if ( ( OSS_FRAME_ID(bytes, frameStart1) & OPENSAFETY_SNMT_MESSAGE_TYPE ) == OPENSAFETY_SNMT_MESSAGE_TYPE )
|
|
|
|
type = OPENSAFETY_SNMT_MESSAGE_TYPE;
|
|
|
|
else
|
|
|
|
{
|
2011-06-17 01:56:35 +00:00
|
|
|
/* This is an invalid openSAFETY package, but it could be an undetected slim ssdo message. This specific error
|
|
|
|
* will only occur, if findFrame1Position is in play. So we search once more, but this time calculating the CRC.
|
|
|
|
* The reason for the second run is, that calculating the CRC is time consuming. */
|
|
|
|
if ( b_frame2First )
|
|
|
|
{
|
|
|
|
/* Now let's check again, but this time calculate the CRC */
|
|
|
|
frameStart1 = findFrame1PositionExtended(length, bytes, TRUE );
|
|
|
|
frameStart2 = 0;
|
|
|
|
|
|
|
|
if ( ( OSS_FRAME_ID(bytes, frameStart1) & OPENSAFETY_SLIM_SSDO_MESSAGE_TYPE ) == OPENSAFETY_SLIM_SSDO_MESSAGE_TYPE )
|
|
|
|
type = OPENSAFETY_SLIM_SSDO_MESSAGE_TYPE;
|
|
|
|
else if ( ( OSS_FRAME_ID(bytes, frameStart1) & OPENSAFETY_SSDO_MESSAGE_TYPE ) == OPENSAFETY_SSDO_MESSAGE_TYPE )
|
|
|
|
type = OPENSAFETY_SSDO_MESSAGE_TYPE;
|
|
|
|
else if ( ( OSS_FRAME_ID(bytes, frameStart1) & OPENSAFETY_SPDO_MESSAGE_TYPE ) == OPENSAFETY_SPDO_MESSAGE_TYPE )
|
|
|
|
type = OPENSAFETY_SPDO_MESSAGE_TYPE;
|
|
|
|
else if ( ( OSS_FRAME_ID(bytes, frameStart1) & OPENSAFETY_SNMT_MESSAGE_TYPE ) == OPENSAFETY_SNMT_MESSAGE_TYPE )
|
|
|
|
type = OPENSAFETY_SNMT_MESSAGE_TYPE;
|
|
|
|
else
|
|
|
|
return FALSE;
|
|
|
|
} else
|
|
|
|
return FALSE;
|
2011-05-31 19:31:45 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
b_ID = OSS_FRAME_ID(bytes, frameStart1);
|
|
|
|
/* Clearing connection valid bit */
|
|
|
|
if ( type == OPENSAFETY_SPDO_MESSAGE_TYPE )
|
|
|
|
b_ID = ( b_ID >> 3 ) << 3;
|
|
|
|
|
|
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, (u_nrInPackage > 1 ? " | %s" : "%s" ),
|
|
|
|
val_to_str(b_ID, message_type_values, "Unknown Message (0x%02X) "));
|
|
|
|
|
|
|
|
if (opensafety_tree)
|
|
|
|
{
|
|
|
|
if ( type == OPENSAFETY_SNMT_MESSAGE_TYPE )
|
|
|
|
{
|
|
|
|
validSCMUDID = TRUE;
|
|
|
|
dissect_opensafety_snmt_message ( message_tvb, pinfo, opensafety_tree, bytes, frameStart1, frameStart2 );
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
validSCMUDID = FALSE;
|
|
|
|
scmUDID = (guint8*)g_malloc(sizeof(guint8)*6);
|
|
|
|
memset(scmUDID, 0, 6);
|
|
|
|
if ( opensafety_get_scm_udid(scmUDID) == 6 )
|
|
|
|
{
|
|
|
|
validSCMUDID = TRUE;
|
|
|
|
bytes = unxorFrame(length, bytes, frameStart1, frameStart2, scmUDID);
|
|
|
|
/* Now confirm, that the xor operation was successful
|
|
|
|
* The ID fields of both frames have to be the same, otherwise
|
|
|
|
* perform the xor again to revert the change
|
|
|
|
*/
|
|
|
|
if ( ( OSS_FRAME_ID(bytes, frameStart1) ^ OSS_FRAME_ID(bytes, frameStart2 ) ) != 0 )
|
|
|
|
{
|
|
|
|
validSCMUDID = FALSE;
|
|
|
|
bytes = unxorFrame(length, bytes, frameStart1, frameStart2, scmUDID);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
g_free ( scmUDID );
|
|
|
|
|
|
|
|
item = proto_tree_add_string(opensafety_tree, hf_oss_scm_udid, message_tvb, 0, 0, global_scm_udid);
|
|
|
|
PROTO_ITEM_SET_GENERATED(item);
|
|
|
|
item = proto_tree_add_boolean(opensafety_tree, hf_oss_scm_udid_valid, message_tvb, 0, 0, validSCMUDID);
|
|
|
|
PROTO_ITEM_SET_GENERATED(item);
|
|
|
|
|
|
|
|
if ( type == OPENSAFETY_SSDO_MESSAGE_TYPE || type == OPENSAFETY_SLIM_SSDO_MESSAGE_TYPE )
|
|
|
|
{
|
|
|
|
dissect_opensafety_ssdo_message ( message_tvb, pinfo, opensafety_tree, bytes, frameStart1, frameStart2, validSCMUDID );
|
|
|
|
}
|
|
|
|
else if ( type == OPENSAFETY_SPDO_MESSAGE_TYPE )
|
|
|
|
{
|
|
|
|
dissect_opensafety_spdo_message ( message_tvb, opensafety_tree, bytes, frameStart1, frameStart2, validSCMUDID );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
proto_tree_add_uint(opensafety_tree, hf_oss_length, message_tvb, OSS_FRAME_POS_LEN + frameStart1, 1, OSS_FRAME_LENGTH(bytes, frameStart1));
|
|
|
|
|
|
|
|
dissect_opensafety_checksum ( message_tvb, opensafety_tree, bytes, frameStart1 );
|
|
|
|
}
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
dissect_opensafety_frame(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree, gboolean b_frame2First, guint8 u_nrInPackage)
|
|
|
|
{
|
|
|
|
proto_item *opensafety_item;
|
|
|
|
proto_tree *opensafety_tree;
|
|
|
|
|
|
|
|
/* if the tree is NULL, we are called for the overview, otherwise for the
|
|
|
|
more detailed view of the package */
|
|
|
|
if (tree) {
|
|
|
|
/* create the opensafety protocol tree */
|
|
|
|
opensafety_item = proto_tree_add_item(tree, proto_opensafety, message_tvb, 0, -1, FALSE);
|
|
|
|
opensafety_tree = proto_item_add_subtree(opensafety_item, ett_opensafety);
|
|
|
|
} else {
|
|
|
|
opensafety_tree = NULL;
|
|
|
|
};
|
|
|
|
|
|
|
|
/* dissect the message */
|
|
|
|
return dissect_opensafety_message(message_tvb, pinfo, opensafety_tree, b_frame2First, u_nrInPackage);
|
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
dissect_opensafety(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree)
|
|
|
|
{
|
|
|
|
/* pinfo is NULL only if dissect_opensafety_message is called from dissect_error cause */
|
|
|
|
if (pinfo)
|
|
|
|
{
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL,
|
|
|
|
(pinfo->destport == UDP_PORT_SIII ? "openSAFETY/SercosIII" : "openSAFETY" )
|
|
|
|
);
|
|
|
|
col_clear(pinfo->cinfo,COL_INFO);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* dissect the message, we are called using UDP SHNF, therefore Frame2 allways comes first */
|
|
|
|
return dissect_opensafety_frame(message_tvb, pinfo, tree, TRUE, 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
dissect_opensafety_epl(tvbuff_t *message_tvb , packet_info *pinfo , proto_tree *tree )
|
|
|
|
{
|
|
|
|
tvbuff_t *next_tvb;
|
|
|
|
guint length, frameOffset, frameLength;
|
|
|
|
guint8 *bytes;
|
|
|
|
gboolean handled, dissectorCalled;
|
|
|
|
guint8 firstByte, found;
|
|
|
|
gint len, reported_len;
|
|
|
|
dissector_handle_t epl_handle;
|
|
|
|
guint8 packageCounter;
|
|
|
|
handled = FALSE;
|
|
|
|
dissectorCalled = FALSE;
|
|
|
|
|
|
|
|
epl_handle = find_dissector("epl");
|
|
|
|
if ( epl_handle == NULL )
|
|
|
|
epl_handle = find_dissector("data");
|
|
|
|
|
|
|
|
firstByte = ( tvb_get_guint8(message_tvb, 0) << 1 );
|
|
|
|
/* No frames can be sent in SoA and SoC messages, therefore those get filtered right away */
|
|
|
|
if ( firstByte == 0x02 || firstByte == 0x0A )
|
|
|
|
{
|
|
|
|
call_dissector(epl_handle, message_tvb, pinfo, tree);
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
len = tvb_length_remaining(message_tvb, 0);
|
|
|
|
reported_len = tvb_reported_length_remaining(message_tvb, 0);
|
|
|
|
length = tvb_length(message_tvb);
|
|
|
|
bytes = (guint8 *) ep_tvb_memdup(message_tvb, 0, length);
|
|
|
|
|
|
|
|
frameOffset = 0;
|
|
|
|
frameLength = 0;
|
|
|
|
found = 0;
|
|
|
|
packageCounter = 0;
|
|
|
|
while ( frameOffset < length )
|
|
|
|
{
|
|
|
|
if ( findSafetyFrame(bytes, length - frameOffset, frameOffset, &frameOffset, &frameLength) )
|
|
|
|
{
|
|
|
|
if ((frameOffset + frameLength) > (guint)reported_len )
|
|
|
|
break;
|
|
|
|
found++;
|
|
|
|
|
|
|
|
/* Freeing memory before dissector, as otherwise we would waste it */
|
|
|
|
next_tvb = tvb_new_subset(message_tvb, frameOffset, frameLength, reported_len);
|
2011-06-17 01:56:35 +00:00
|
|
|
/* Adding a visual aid to the dissector tree */
|
|
|
|
add_new_data_source(pinfo, next_tvb, "openSAFETY Frame");
|
|
|
|
|
2011-05-31 19:31:45 +00:00
|
|
|
if ( ! dissectorCalled )
|
|
|
|
{
|
|
|
|
call_dissector(epl_handle, message_tvb, pinfo, tree);
|
|
|
|
dissectorCalled = TRUE;
|
|
|
|
|
|
|
|
/* pinfo is NULL only if dissect_opensafety_message is called from dissect_error cause */
|
|
|
|
if (pinfo)
|
|
|
|
{
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "openSAFETY/Powerlink");
|
|
|
|
col_clear(pinfo->cinfo,COL_INFO);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Only engage, if we are not called strictly for the overview */
|
|
|
|
if ( tree )
|
|
|
|
{
|
|
|
|
if ( dissect_opensafety_frame(next_tvb, pinfo, tree, FALSE, found) == TRUE )
|
|
|
|
packageCounter++;
|
|
|
|
}
|
|
|
|
handled = TRUE;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
break;
|
|
|
|
|
|
|
|
frameOffset += frameLength;
|
|
|
|
}
|
|
|
|
|
|
|
|
if ( handled == TRUE && packageCounter == 0 )
|
|
|
|
handled = FALSE;
|
|
|
|
|
|
|
|
if ( ! handled )
|
|
|
|
{
|
|
|
|
call_dissector(epl_handle, message_tvb, pinfo, tree);
|
|
|
|
handled = TRUE;
|
|
|
|
}
|
|
|
|
return ( handled ? TRUE : FALSE );
|
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
dissect_heur_opensafety_epl(tvbuff_t *message_tvb , packet_info *pinfo , proto_tree *tree )
|
|
|
|
{
|
|
|
|
guint32 constData;
|
|
|
|
|
|
|
|
constData = 0x0;
|
|
|
|
if ( pinfo->private_data != NULL )
|
|
|
|
memcpy(&constData, pinfo->private_data, sizeof(guint32));
|
|
|
|
|
|
|
|
/* We will call the epl dissector by using call_dissector(). The epl dissector will then call
|
|
|
|
* the heuristic openSAFETY dissector again. By setting this information, we prevent a dissector
|
|
|
|
* loop */
|
|
|
|
if ( pinfo->private_data == NULL || ( constData != OPENSAFETY_PINFO_CONST_DATA ) )
|
|
|
|
{
|
|
|
|
constData = OPENSAFETY_PINFO_CONST_DATA;
|
|
|
|
pinfo->private_data = (void*)ep_alloc(sizeof(guint32));
|
|
|
|
memcpy(pinfo->private_data, &constData, sizeof(guint32));
|
|
|
|
return dissect_opensafety_epl(message_tvb, pinfo, tree );
|
|
|
|
}
|
|
|
|
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
dissect_opensafety_siii(tvbuff_t *message_tvb , packet_info *pinfo , proto_tree *tree )
|
|
|
|
{
|
|
|
|
tvbuff_t *next_tvb;
|
|
|
|
guint length, frameOffset, frameLength;
|
|
|
|
guint8 *bytes;
|
|
|
|
gboolean handled, dissectorCalled, udpDissectorCalled;
|
|
|
|
guint8 firstByte, found;
|
|
|
|
gint len, reported_len;
|
|
|
|
dissector_handle_t siii_handle;
|
|
|
|
guint8 packageCounter = 0;
|
2011-06-03 16:56:09 +00:00
|
|
|
gboolean internSIIIHandling;
|
2011-05-31 19:31:45 +00:00
|
|
|
|
|
|
|
handled = FALSE;
|
|
|
|
dissectorCalled = FALSE;
|
|
|
|
udpDissectorCalled = FALSE;
|
2011-06-03 16:56:09 +00:00
|
|
|
internSIIIHandling = FALSE;
|
2011-05-31 19:31:45 +00:00
|
|
|
|
|
|
|
siii_handle = find_dissector("sercosiii");
|
|
|
|
if ( siii_handle == NULL )
|
2011-06-03 16:56:09 +00:00
|
|
|
{
|
2011-05-31 19:31:45 +00:00
|
|
|
siii_handle = find_dissector("data");
|
2011-06-03 16:56:09 +00:00
|
|
|
/* We can handle the packages internally, if there is no sercos iii plugin available */
|
|
|
|
if ( pinfo->ethertype == ETHERTYPE_SERCOS )
|
2011-06-17 01:56:35 +00:00
|
|
|
internSIIIHandling = TRUE;
|
2011-06-03 16:56:09 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if ( tree && internSIIIHandling )
|
|
|
|
{
|
2011-06-17 01:56:35 +00:00
|
|
|
proto_tree_add_text(tree,message_tvb, 0, -1, "SercosIII dissector not available, openSAFETY/SercosIII native dissection.");
|
2011-06-03 16:56:09 +00:00
|
|
|
}
|
2011-05-31 19:31:45 +00:00
|
|
|
|
|
|
|
/* We have a SERCOS III package, whether encapsulated in UDP or
|
|
|
|
directly atop Ethernet */
|
|
|
|
firstByte = ( tvb_get_guint8(message_tvb, 0) << 1 );
|
|
|
|
/* No frames can be sent in AT messages, therefore those get filtered right away */
|
|
|
|
if ( ( (!firstByte) & 0x40 ) == 0x40 )
|
|
|
|
{
|
|
|
|
if ( pinfo->ipproto != IPPROTO_UDP )
|
|
|
|
call_dissector(siii_handle, message_tvb, pinfo, tree);
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
len = tvb_length_remaining(message_tvb, 0);
|
|
|
|
reported_len = tvb_reported_length_remaining(message_tvb, 0);
|
|
|
|
length = tvb_length(message_tvb);
|
|
|
|
bytes = (guint8 *) ep_tvb_memdup(message_tvb, 0, length);
|
|
|
|
|
|
|
|
frameOffset = 0;
|
|
|
|
frameLength = 0;
|
|
|
|
found = 0;
|
|
|
|
while ( frameOffset < length )
|
|
|
|
{
|
|
|
|
if ( findSafetyFrame(bytes, length - frameOffset, frameOffset, &frameOffset, &frameLength) )
|
|
|
|
{
|
|
|
|
if ((frameOffset + frameLength) > (guint)reported_len )
|
|
|
|
break;
|
|
|
|
found++;
|
|
|
|
|
|
|
|
/* Freeing memory before dissector, as otherwise we would waste it */
|
|
|
|
next_tvb = tvb_new_subset(message_tvb, frameOffset, frameLength, reported_len);
|
2011-06-17 01:56:35 +00:00
|
|
|
/* Adding a visual aid to the dissector tree */
|
|
|
|
add_new_data_source(pinfo, next_tvb, "openSAFETY Frame");
|
2011-05-31 19:31:45 +00:00
|
|
|
|
|
|
|
/* pinfo is NULL only if dissect_opensafety_message is called from dissect_error cause */
|
|
|
|
if ( ( ! udpDissectorCalled ) && ( pinfo->ipproto == IPPROTO_UDP ) && pinfo )
|
|
|
|
{
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL,
|
|
|
|
( pinfo->ipproto != IPPROTO_UDP ? "openSAFETY/SercosIII" : "openSAFETY/SercosIII UDP" ) );
|
|
|
|
col_clear(pinfo->cinfo,COL_INFO);
|
|
|
|
udpDissectorCalled = TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Call the dissector */
|
|
|
|
if ( ( ! dissectorCalled ) && ( pinfo->ipproto != IPPROTO_UDP ) )
|
|
|
|
{
|
2011-06-17 01:56:35 +00:00
|
|
|
if ( ! internSIIIHandling )
|
|
|
|
call_dissector(siii_handle, message_tvb, pinfo, tree);
|
2011-05-31 19:31:45 +00:00
|
|
|
dissectorCalled = TRUE;
|
|
|
|
|
|
|
|
/* pinfo is NULL only if dissect_opensafety_message is called from dissect_error cause */
|
|
|
|
if (pinfo)
|
|
|
|
{
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "openSAFETY/SercosIII");
|
|
|
|
col_clear(pinfo->cinfo,COL_INFO);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Only engage, if we are not called strictly for the overview */
|
|
|
|
if ( tree )
|
|
|
|
{
|
|
|
|
if ( dissect_opensafety_frame(next_tvb, pinfo, tree, FALSE, found) == TRUE )
|
|
|
|
packageCounter++;
|
|
|
|
}
|
|
|
|
handled = TRUE;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
break;
|
|
|
|
|
|
|
|
frameOffset += frameLength;
|
|
|
|
}
|
|
|
|
|
|
|
|
if ( handled == TRUE && packageCounter == 0 )
|
|
|
|
handled = FALSE;
|
|
|
|
|
|
|
|
if ( ! handled )
|
|
|
|
{
|
|
|
|
if ( pinfo->ipproto != IPPROTO_UDP )
|
|
|
|
call_dissector(siii_handle, message_tvb, pinfo, tree);
|
|
|
|
handled = TRUE;
|
|
|
|
}
|
|
|
|
return ( handled ? TRUE : FALSE );
|
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
dissect_heur_opensafety_siii(tvbuff_t *message_tvb , packet_info *pinfo , proto_tree *tree )
|
|
|
|
{
|
|
|
|
guint32 constData;
|
|
|
|
guint8 firstByte;
|
|
|
|
|
|
|
|
/* We can assume to have a SercosIII package, as the SercosIII dissector won't detect
|
|
|
|
* SercosIII-UDP packages, this is most likely SercosIII-over-ethernet */
|
|
|
|
|
|
|
|
/* No frames can be sent in AT messages, therefore those get filtered right away */
|
|
|
|
firstByte = ( tvb_get_guint8(message_tvb, 0) << 1 );
|
|
|
|
if ( ( (!firstByte) & 0x40 ) == 0x40 )
|
|
|
|
return FALSE;
|
|
|
|
|
|
|
|
constData = 0x0;
|
|
|
|
if ( pinfo->private_data != NULL )
|
|
|
|
memcpy(&constData, pinfo->private_data, sizeof(guint32));
|
|
|
|
|
|
|
|
/* We will call the SercosIII dissector by using call_dissector(). The SercosIII dissector will
|
|
|
|
* then call the heuristic openSAFETY dissector again. By setting this information, we prevent
|
|
|
|
* a dissector loop */
|
|
|
|
if ( pinfo->private_data == NULL || ( constData != OPENSAFETY_PINFO_CONST_DATA ) )
|
|
|
|
{
|
|
|
|
constData = OPENSAFETY_PINFO_CONST_DATA;
|
|
|
|
pinfo->private_data = (void*)ep_alloc(sizeof(guint32));
|
|
|
|
memcpy(pinfo->private_data, &constData, sizeof(guint32));
|
|
|
|
return dissect_opensafety_siii(message_tvb, pinfo, tree);
|
|
|
|
}
|
|
|
|
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
2011-06-17 01:56:35 +00:00
|
|
|
static gboolean
|
|
|
|
dissect_opensafety_mbtcp(tvbuff_t *message_tvb , packet_info *pinfo , proto_tree *tree )
|
|
|
|
{
|
|
|
|
tvbuff_t *next_tvb;
|
|
|
|
guint length, frameOffset, frameLength;
|
|
|
|
guint8 *bytes;
|
|
|
|
gboolean handled, dissectorCalled;
|
|
|
|
guint8 found, packageCounter, i, tempByte;
|
|
|
|
gint len, reported_len;
|
|
|
|
|
|
|
|
length = tvb_length(message_tvb);
|
|
|
|
/* Minimum package length is 11 */
|
|
|
|
if ( length < 11 )
|
|
|
|
return FALSE;
|
|
|
|
|
|
|
|
handled = FALSE;
|
|
|
|
dissectorCalled = FALSE;
|
|
|
|
|
|
|
|
bytes = (guint8 *) ep_tvb_memdup(message_tvb, 0, length);
|
|
|
|
|
|
|
|
if ( global_mbtcp_big_endian == TRUE )
|
|
|
|
{
|
|
|
|
/* Wordswapping for modbus detection */
|
|
|
|
/* Only a even number of bytes can be swapped */
|
|
|
|
len = (length / 2);
|
|
|
|
for ( i = 0; i < len; i++ )
|
|
|
|
{
|
|
|
|
tempByte = bytes [ 2 * i ]; bytes [ 2 * i ] = bytes [ 2 * i + 1 ]; bytes [ 2 * i + 1 ] = tempByte;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
len = tvb_length_remaining(message_tvb, 0);
|
|
|
|
reported_len = tvb_reported_length_remaining(message_tvb, 0);
|
|
|
|
|
|
|
|
frameOffset = 0;
|
|
|
|
frameLength = 0;
|
|
|
|
found = 0;
|
|
|
|
packageCounter = 0;
|
|
|
|
while ( frameOffset < length )
|
|
|
|
{
|
|
|
|
if ( findSafetyFrame(bytes, length - frameOffset, frameOffset, &frameOffset, &frameLength) )
|
|
|
|
{
|
|
|
|
if ((frameOffset + frameLength) > (guint)reported_len )
|
|
|
|
break;
|
|
|
|
|
|
|
|
found++;
|
|
|
|
|
|
|
|
/* Freeing memory before dissector, as otherwise we would waste it */
|
|
|
|
if ( global_mbtcp_big_endian == TRUE )
|
|
|
|
{
|
|
|
|
next_tvb = tvb_new_real_data(&bytes[frameOffset], (frameLength), reported_len);
|
|
|
|
tvb_set_child_real_data_tvbuff(message_tvb, next_tvb);
|
|
|
|
add_new_data_source(pinfo, next_tvb, "openSAFETY Frame (Swapped)");
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
next_tvb = tvb_new_subset(message_tvb, frameOffset, frameLength, reported_len);
|
|
|
|
add_new_data_source(pinfo, next_tvb, "openSAFETY Frame");
|
|
|
|
}
|
|
|
|
|
|
|
|
if ( ! dissectorCalled )
|
|
|
|
{
|
|
|
|
dissectorCalled = TRUE;
|
|
|
|
|
|
|
|
/* pinfo is NULL only if dissect_opensafety_message is called from dissect_error cause */
|
|
|
|
if (pinfo)
|
|
|
|
{
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "openSAFETY over Modbus");
|
|
|
|
col_clear(pinfo->cinfo,COL_INFO);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Only engage, if we are not called strictly for the overview */
|
|
|
|
if ( tree )
|
|
|
|
{
|
2011-06-21 05:21:15 +00:00
|
|
|
/* When Modbus/TCP get's dissected, openSAFETY would be sorted as a child protocol. Although,
|
|
|
|
* this behaviour is technically correct, it differs from other implemented IEM protocol handlers.
|
|
|
|
* Therefore, the openSAFETY frame get's put one up, if the parent is not NULL */
|
|
|
|
if ( dissect_opensafety_frame(next_tvb, pinfo, ( tree->parent != NULL ? tree->parent : tree ), FALSE, found ) == TRUE )
|
2011-06-17 01:56:35 +00:00
|
|
|
packageCounter++;
|
|
|
|
}
|
|
|
|
handled = TRUE;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
break;
|
|
|
|
|
|
|
|
frameOffset += frameLength;
|
|
|
|
}
|
|
|
|
|
|
|
|
if ( handled == TRUE && packageCounter == 0 )
|
|
|
|
handled = FALSE;
|
|
|
|
|
|
|
|
return ( handled ? TRUE : FALSE );
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
apply_prefs ( void )
|
|
|
|
{
|
|
|
|
static gboolean opensafety_init = FALSE;
|
|
|
|
static guint opensafety_udp_port_number;
|
|
|
|
static guint opensafety_udp_siii_port_number;
|
|
|
|
|
|
|
|
/* It only should delete dissectors, if run for any time except the first */
|
|
|
|
if ( opensafety_init )
|
|
|
|
{
|
|
|
|
/* Delete dissectors in preparation of a changed config setting */
|
|
|
|
dissector_delete_uint ("udp.port", opensafety_udp_port_number, find_dissector("opensafety"));
|
|
|
|
dissector_delete_uint ("udp.port", opensafety_udp_siii_port_number, find_dissector("opensafety_siii"));
|
|
|
|
}
|
|
|
|
|
|
|
|
opensafety_init = TRUE;
|
|
|
|
|
|
|
|
/* Storing the port numbers locally, to being able to delete the old associations */
|
|
|
|
opensafety_udp_port_number = global_network_udp_port;
|
|
|
|
opensafety_udp_siii_port_number = global_network_udp_port_sercosiii;
|
|
|
|
|
|
|
|
/* Default UDP only based dissector */
|
|
|
|
dissector_add_uint("udp.port", opensafety_udp_port_number, find_dissector("opensafety"));
|
|
|
|
|
|
|
|
/* Sercos III dissector does not handle UDP transport, has to be handled
|
|
|
|
* separately, everything else should be caught by the heuristic dissector
|
|
|
|
*/
|
|
|
|
dissector_add_uint("udp.port", opensafety_udp_siii_port_number, find_dissector("opensafety_siii"));
|
|
|
|
|
|
|
|
}
|
|
|
|
|
2011-05-31 19:31:45 +00:00
|
|
|
void
|
|
|
|
proto_register_opensafety(void)
|
|
|
|
{
|
|
|
|
/* Setup list of header fields */
|
|
|
|
static hf_register_info hf[] = {
|
|
|
|
/* General fields for subframe 1 */
|
|
|
|
|
|
|
|
{ &hf_oss_scm_udid, { "SCM UDID Configured", "opensafety.scm_udid", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_scm_udid_valid, { "SCM UDID Valid", "opensafety.scm_udid_valid", FT_BOOLEAN, BASE_NONE, NULL, 0x0, NULL, HFILL } },
|
|
|
|
|
|
|
|
{ &hf_oss_msg, { "Message", "opensafety.msg.id", FT_UINT8, BASE_HEX, VALS(message_type_values), 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_msgtype, { "Type", "opensafety.msg.type", FT_BOOLEAN, BASE_NONE, TFS(&opensafety_message_type), 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_msg_sender, { "Sender", "opensafety.msg.sender", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_msg_receiver, { "Receiver", "opensafety.msg.receiver", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_length, { "Length", "opensafety.length", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_data, { "Data", "opensafety.data", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_crc, { "CRC", "opensafety.crc.data", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
|
|
|
|
|
|
{ &hf_oss_crc_valid, { "Is Valid", "opensafety.crc.valid", FT_BOOLEAN, BASE_NONE, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_crc_type, { "CRC Type", "opensafety.crc.type", FT_UINT8, BASE_DEC, VALS(message_crc_type), 0x0, NULL, HFILL } },
|
|
|
|
|
|
|
|
/* SNMT Specific fields */
|
|
|
|
{ &hf_oss_snmt_slave, { "SNMT Slave", "opensafety.snmt.slave", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_snmt_master, { "SNMT Master", "opensafety.snmt.master", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_snmt_scm, { "SCM", "opensafety.snmt.scm", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_snmt_tool, { "Tool ID", "opensafety.snmt.tool_id", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_snmt_udid, { "UDID for SN", "opensafety.snmt.udid", FT_ETHER, BASE_NONE, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_snmt_timestamp, { "Parameter Timestamp", "opensafety.snmt.timestamp", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_snmt_service_id, { "Extended Service ID", "opensafety.snmt.service_id", FT_UINT8, BASE_HEX, VALS(message_service_type), 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_snmt_error_group, { "Error Group", "opensafety.snmt.error_group", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_snmt_error_code, { "Error Code", "opensafety.snmt.error_code", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
|
|
|
|
|
|
/* SSDO Specific fields */
|
|
|
|
{ &hf_oss_ssdo_server, { "SSDO Server", "opensafety.ssdo.master", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_ssdo_client, { "SSDO Client", "opensafety.ssdo.client", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } },
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|
|
|
{ &hf_oss_ssdo_sano, { "SOD Access Request Number", "opensafety.ssdo.sano", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_ssdo_sacmd, { "SOD Access Command", "opensafety.ssdo.sacmd", FT_UINT8, BASE_HEX, VALS(ssdo_sacmd_values), 0x0, NULL, HFILL } },
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|
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|
{ &hf_oss_ssdo_sod_index, { "SOD Index", "opensafety.ssdo.sod_index", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
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|
{ &hf_oss_ssdo_sod_subindex, { "SOD Sub Index", "opensafety.ssdo.sod_subindex", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
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|
{ &hf_oss_ssdo_payload, { "SOD Payload", "opensafety.ssdo.payload", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
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{ &hf_oss_ssdo_payload_size, { "SOD Payload Size", "opensafety.ssdo.payloadsize", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_ssdo_segment_size, { "SOD Segment Size", "opensafety.ssdo.segmentsize", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_ssdo_inhibit_time, { "Inhibit Time", "opensafety.ssdo.inhibittime", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
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|
{ &hf_oss_ssdo_abort_code, { "Abort Code", "opensafety.ssdo.abortcode", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
|
|
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|
|
|
/* SSDO SACmd specific fields */
|
|
|
|
{ &hf_oss_ssdo_sacmd_access_type, { "Access Type", "opensafety.ssdo.sacmd.access", FT_BOOLEAN, 8, TFS(&opensafety_sacmd_acc), OPENSAFETY_SSDO_SACMD_ACC, NULL, HFILL } },
|
|
|
|
{ &hf_oss_ssdo_sacmd_reserved, { "Reserved", "opensafety.ssdo.sacmd.reserved", FT_BOOLEAN, 8, TFS(&opensafety_sacmd_res), OPENSAFETY_SSDO_SACMD_RES, NULL, HFILL } },
|
|
|
|
{ &hf_oss_ssdo_sacmd_abort_transfer, { "Abort Transfer", "opensafety.ssdo.sacmd.abort_transfer", FT_BOOLEAN, 8, TFS(&opensafety_sacmd_abrt), OPENSAFETY_SSDO_SACMD_ABRT, NULL, HFILL } },
|
|
|
|
{ &hf_oss_ssdo_sacmd_segmentation, { "Segmentation", "opensafety.ssdo.sacmd.segmentation", FT_BOOLEAN, 8, TFS(&opensafety_sacmd_seg), OPENSAFETY_SSDO_SACMD_SEG, NULL, HFILL } },
|
|
|
|
{ &hf_oss_ssdo_sacmd_toggle, { "Toggle Bit", "opensafety.ssdo.sacmd.toggle", FT_BOOLEAN, 8, TFS(&opensafety_on_off), OPENSAFETY_SSDO_SACMD_TGL, NULL, HFILL } },
|
|
|
|
{ &hf_oss_ssdo_sacmd_initiate, { "Initiate Transfer", "opensafety.ssdo.sacmd.initiate", FT_BOOLEAN, 8, TFS(&opensafety_sacmd_ini), OPENSAFETY_SSDO_SACMD_INI, NULL, HFILL } },
|
|
|
|
{ &hf_oss_ssdo_sacmd_end_segment, { "End Segment", "opensafety.ssdo.sacmd.end_segment", FT_BOOLEAN, 8, TFS(&opensafety_sacmd_ensg), OPENSAFETY_SSDO_SACMD_ENSG, NULL, HFILL } },
|
|
|
|
{ &hf_oss_ssdo_sacmd_block_transfer, { "Block Transfer", "opensafety.ssdo.sacmd.block_transfer", FT_BOOLEAN, 8, TFS(&opensafety_sacmd_blk), OPENSAFETY_SSDO_SACMD_BLK, NULL, HFILL } },
|
|
|
|
|
|
|
|
/* SPDO Specific fields */
|
|
|
|
{ &hf_oss_spdo_connection_valid, { "Connection Valid Bit", "opensafety.spdo.connection_valid", FT_BOOLEAN, 8, TFS(&opensafety_set_notset), 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_spdo_payload, { "SPDO Payload", "opensafety.spdo.payload", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_spdo_producer, { "Producer", "opensafety.spdo.producer", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_spdo_producer_time, { "Internal Time Producer", "opensafety.spdo.time.producer", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_spdo_time_value_sn, { "Internal Time SN", "opensafety.spdo.time.sn", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_spdo_time_request, { "Time Request Counter", "opensafety.spdo.time.request_counter", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_spdo_time_request_to, { "Time Request from", "opensafety.spdo.time.request_from", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_oss_spdo_time_request_from, { "Time Request by", "opensafety.spdo.time.request_to", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
/* Setup protocol subtree array */
|
|
|
|
static gint *ett[] = {
|
|
|
|
&ett_opensafety,
|
|
|
|
&ett_opensafety_checksum,
|
|
|
|
&ett_opensafety_snmt,
|
|
|
|
&ett_opensafety_ssdo,
|
|
|
|
&ett_opensafety_ssdo_sacmd,
|
|
|
|
};
|
|
|
|
|
|
|
|
module_t *opensafety_module;
|
|
|
|
|
|
|
|
/* Register the protocol name and description */
|
|
|
|
proto_opensafety = proto_register_protocol("openSAFETY", "openSAFETY", "opensafety");
|
2011-06-17 01:56:35 +00:00
|
|
|
opensafety_module = prefs_register_protocol(proto_opensafety, apply_prefs);
|
2011-05-31 19:31:45 +00:00
|
|
|
|
|
|
|
/* Required function calls to register the header fields and subtrees used */
|
|
|
|
proto_register_field_array(proto_opensafety, hf, array_length(hf));
|
|
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
|
|
|
|
/* register user preferences */
|
|
|
|
prefs_register_string_preference(opensafety_module, "scm_udid",
|
|
|
|
"SCM UDID (xx:xx:xx:xx:xx:xx)",
|
|
|
|
"To be able to fully dissect SSDO and SPDO packages, a valid UDID for the SCM has to be provided",
|
|
|
|
&global_scm_udid);
|
2011-06-17 01:56:35 +00:00
|
|
|
prefs_register_uint_preference(opensafety_module, "network_udp_port",
|
|
|
|
"UDP Port used for the UDP demo ",
|
|
|
|
"UDP port used by UDP demo implementation to transport asynchronous data", 10,
|
|
|
|
&global_network_udp_port);
|
|
|
|
prefs_register_uint_preference(opensafety_module, "network_udp_port_sercosiii",
|
|
|
|
"UDP Port used for SercosIII",
|
|
|
|
"UDP port used by SercosIII to transport asynchronous data", 10,
|
|
|
|
&global_network_udp_port_sercosiii);
|
|
|
|
prefs_register_bool_preference(opensafety_module, "mbtcp_big_endian",
|
|
|
|
"Modbus/TCP Big Endian Word Coding",
|
|
|
|
"Modbus/TCP words can be transmissioned either big- or little endian. Default will be little endian",
|
|
|
|
&global_mbtcp_big_endian);
|
|
|
|
|
|
|
|
/* Registering default and ModBus/TCP dissector */
|
|
|
|
new_register_dissector("opensafety", dissect_opensafety, proto_opensafety );
|
|
|
|
new_register_dissector("opensafety_mbtcp", dissect_opensafety_mbtcp, proto_opensafety );
|
|
|
|
new_register_dissector("opensafety_siii", dissect_opensafety_siii, proto_opensafety);
|
2011-06-03 16:56:09 +00:00
|
|
|
|
2011-05-31 19:31:45 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
proto_reg_handoff_opensafety(void)
|
|
|
|
{
|
|
|
|
static int opensafety_inited = FALSE;
|
|
|
|
|
|
|
|
if ( !opensafety_inited )
|
|
|
|
{
|
|
|
|
heur_dissector_add("epl", dissect_heur_opensafety_epl, proto_opensafety);
|
|
|
|
|
|
|
|
/* For SercosIII we have to register as a heuristic dissector, as SercosIII
|
|
|
|
* is implemented as a plugin, and therefore the heuristic dissector is not
|
|
|
|
* added by the time this method is being called
|
|
|
|
*/
|
2011-06-03 16:56:09 +00:00
|
|
|
if ( find_dissector("sercosiii") != NULL )
|
|
|
|
{
|
2011-06-17 01:56:35 +00:00
|
|
|
heur_dissector_add("sercosiii", dissect_heur_opensafety_siii, proto_opensafety);
|
2011-06-03 16:56:09 +00:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
/* The native dissector cannot be loaded. so we add our protocol directly to
|
|
|
|
* the ethernet subdissector list. No SercosIII specific data will be dissected
|
|
|
|
* and a warning will be displayed, recognizing the missing dissector plugin.
|
|
|
|
*/
|
2011-06-08 12:02:38 +00:00
|
|
|
g_warning ( "openSAFETY - SercosIII heuristic dissector cannot be registered, openSAFETY/SercosIII native dissection." );
|
2011-06-03 16:56:09 +00:00
|
|
|
dissector_add_uint("ethertype", ETHERTYPE_SERCOS, find_dissector("opensafety_siii"));
|
|
|
|
}
|
2011-06-17 01:56:35 +00:00
|
|
|
|
|
|
|
/* Modbus TCP dissector registration */
|
|
|
|
dissector_add_string("mbtcp.modbus.data", "data", find_dissector("opensafety_mbtcp"));
|
2011-05-31 19:31:45 +00:00
|
|
|
}
|
2011-06-17 01:56:35 +00:00
|
|
|
|
2011-05-31 19:31:45 +00:00
|
|
|
}
|