2007-05-21 23:50:18 +00:00
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/* packet-kingfisher.c
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* Routines for kingfisher packet dissection
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* By Rob Casey 2007
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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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* Copied from packet-pop.c
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 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 <epan/packet.h>
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#include <epan/emem.h>
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#include <epan/conversation.h>
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#define SUPPORT_KINGFISHER_SERIES_2
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#define TCP_PORT_KINGFISHER 4058
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#define UDP_PORT_KINGFISHER 4058
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#ifdef SUPPORT_KINGFISHER_SERIES_2
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#define TCP_PORT_KINGFISHER_OLD 473
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#define UDP_PORT_KINGFISHER_OLD 473
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#endif
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static int proto_kingfisher = -1;
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static int hf_kingfisher_version = -1;
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static int hf_kingfisher_system = -1;
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static int hf_kingfisher_length = -1;
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static int hf_kingfisher_from = -1;
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static int hf_kingfisher_target = -1;
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static int hf_kingfisher_via = -1;
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static int hf_kingfisher_message = -1;
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static int hf_kingfisher_function = -1;
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static int hf_kingfisher_checksum = -1;
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2009-09-04 18:40:02 +00:00
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static dissector_handle_t kingfisher_conv_handle;
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2007-05-21 23:50:18 +00:00
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typedef struct _kingfisher_packet_t
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{
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2009-09-04 18:40:02 +00:00
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guint8 version;
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guint8 system;
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guint16 from;
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guint16 target;
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guint16 via;
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guint8 length;
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guint8 message;
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guint8 function;
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guint16 checksum;
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2007-05-21 23:50:18 +00:00
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} kingfisher_packet_t;
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static gint ett_kingfisher = -1;
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static const value_string function_code_vals[] =
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{
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{ 0x00, "Acknowledgement" },
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{ 0x01, "Negative Acknowledgement" },
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{ 0x02, "No Access" },
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{ 0x03, "Message Buffer Full" },
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{ 0x0a, "Get Data Frame" },
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{ 0x0b, "Send Data Frame" },
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{ 0x0c, "Get Data Blocks" },
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{ 0x0d, "Send Data Blocks" },
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{ 0x0e, "Check RTU Update" },
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{ 0x0f, "Send RTU Update" },
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{ 0x10, "Get Multiple Data" },
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{ 0x11, "Send Multiple Data" },
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{ 0x12, "Get Multiple Network Data" },
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{ 0x13, "Send Multiple Network Data" },
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{ 0x1e, "Cold Start" },
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{ 0x1f, "Warm Start" },
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{ 0x21, "Program Control" },
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{ 0x22, "Get RTU Status" },
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{ 0x23, "Send RTU Status" },
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{ 0x24, "Set RTC" },
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{ 0x25, "Swap Master CPU" },
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{ 0x26, "Send I/O Module Message" },
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{ 0x28, "Get Diagnostic Information" },
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{ 0x29, "Send Diagnostic Information" },
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{ 0x2b, "Send Pager Information" },
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{ 0x2c, "Get Pager Information" },
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{ 0x2d, "Send Port Data Information" },
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{ 0x2e, "Get Port Data Information" },
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{ 0x2f, "Send RTU Data Information" },
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{ 0x30, "Get RTU Data Information" },
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{ 0x31, "Unlock Port" },
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{ 0x33, "Carrier Test" },
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{ 0x34, "Program Flash RAM" },
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{ 0x35, "Get I/O Values" },
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{ 0x36, "Send I/O Values" },
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{ 0x37, "Synchronise Clock" },
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{ 0x38, "Send Communications Module Message" },
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{ 0x39, "Get Communications Module Message" },
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{ 0x3a, "Get Driver Information" },
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{ 0x3b, "Send Driver Information" },
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{ 0x3c, "Communications Analyser" },
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{ 0x41, "Dial Site" },
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{ 0x42, "Hang-up Site" },
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{ 0x46, "Send File" },
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{ 0x47, "Get File" },
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{ 0x50, "Get Event Logging" },
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{ 0x51, "Send Event Logging" },
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{ 0x80, "Acknowledgement" },
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{ 0x81, "Negative Acknowledgement" },
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{ 0x84, "Get Named Variable" },
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{ 0x85, "Send Named Variable" },
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{ 0x87, "Get Module Information" },
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{ 0x88, "Send Module Information" },
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{ 0x89, "Get I/O Values" },
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{ 0x8a, "Send I/O Values" },
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{ 0x9e, "Cold Start" },
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{ 0x9f, "Warm Start" },
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{ 0xa2, "Get RTU Status" },
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{ 0xa3, "Send RTU Status" },
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{ 0xa4, "Set RTC" },
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{ 0xa8, "Get Diagnostic Information" },
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{ 0xa9, "Send Diagnostic Information" },
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{ 0xd1, "Set Event Log" },
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{ 0xd2, "Clear Event Log" },
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{ 0xd3, "Get Number of Events" },
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{ 0xd4, "Send Number of Events" },
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{ 0xd5, "Get Event Log" },
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{ 0xd6, "Continue Event Log" },
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{ 0xd7, "Send Event Log" },
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{ 0xe0, "Send File Start" },
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{ 0xe1, "Send File Start Acknowledgement" },
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{ 0xe2, "Send File Data" },
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{ 0xe3, "Send File Data Acknowledgement" },
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{0, NULL}
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};
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static unsigned short
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kingfisher_checksum(tvbuff_t *tvb, int offset)
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{
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gint c, i, j, len;
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unsigned short crc;
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crc = 0;
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len = tvb_reported_length_remaining(tvb, offset) - 2;
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for( i = 1; i < len; i++ )
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{
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c = ( ( unsigned char ) tvb_get_guint8( tvb, i ) ) & 0xff;
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for( j = 0; j < 8; ++j )
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{
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if( crc & 0x8000 )
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{
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crc <<= 1;
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crc += ( ( ( c <<= 1 ) & 0x100 ) != 0 );
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crc ^= 0x1021;
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}
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else
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{
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crc <<= 1;
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crc += ( ( ( c <<= 1 ) & 0x100 ) != 0 );
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}
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}
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}
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return crc;
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}
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static gboolean
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dissect_kingfisher(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, gboolean is_conv_dissector)
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{
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kingfisher_packet_t *kfp;
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proto_tree *kingfisher_tree=NULL;
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proto_item *item=NULL;
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const char *func_string = NULL;
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unsigned short checksum;
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2009-09-04 18:40:02 +00:00
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int message;
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2007-05-21 23:50:18 +00:00
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/* There can be one byte reply packets. we only test for these when we
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are called from the conversation dissector since that is the only time
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we can be certain this is kingfisher
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*/
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if(is_conv_dissector && (tvb_reported_length(tvb)==1)){
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/*
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Perform a check to see if the message is a single byte acknowledgement
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message - Note that in this instance there is no information in the packet
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with regard to source or destination RTU address which can be used in the
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population of dissector fields.
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*/
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switch(tvb_get_guint8(tvb, 0)){
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case 0x00:
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case 0x01:
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case 0x80:
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case 0x81:
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2009-08-09 06:26:46 +00:00
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "Kingfisher");
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2009-09-04 18:40:02 +00:00
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func_string = val_to_str(tvb_get_guint8(tvb, 0), function_code_vals, "Unknown function");
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col_clear(pinfo->cinfo, COL_INFO);
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col_add_fstr(pinfo->cinfo, COL_INFO, "(%s)", func_string);
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2007-05-21 23:50:18 +00:00
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proto_tree_add_protocol_format(tree, proto_kingfisher, tvb, 0, -1, "Kingfisher Protocol, %s", func_string);
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return TRUE;
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}
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/* othervise it is way too short to be kingfisger */
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return FALSE;
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}
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kfp=ep_alloc(sizeof(kingfisher_packet_t));
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/* Verify that it looks like kingfisher */
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/* the packet must be at least 9 bytes */
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if(tvb_reported_length(tvb)<9){
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return FALSE;
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}
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/* the function code must be known */
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kfp->function = tvb_get_guint8( tvb, 6 );
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2009-09-04 18:40:02 +00:00
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if (match_strval(kfp->function, function_code_vals) == NULL) {
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/* This appears not to be a kingfisher packet */
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return FALSE;
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2007-05-21 23:50:18 +00:00
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}
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2009-09-04 18:40:02 +00:00
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2007-05-21 23:50:18 +00:00
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/* verify the length */
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kfp->length = tvb_get_guint8(tvb, 2);
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if((kfp->length+1) != (guint8)tvb_length(tvb)){
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return FALSE;
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}
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/* verify the checksum */
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kfp->checksum = tvb_get_ntohs(tvb, kfp->length - 1);
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checksum = kingfisher_checksum(tvb, 0);
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if(kfp->checksum!=checksum){
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return FALSE;
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}
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kfp->version = (kfp->function & 0x80)?3:2;
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2009-09-04 18:18:34 +00:00
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kfp->system = tvb_get_guint8( tvb, 0 );
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kfp->message = tvb_get_guint8( tvb, 5 );
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kfp->target = tvb_get_guint8( tvb, 1 );
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kfp->from = tvb_get_guint8( tvb, 3 );
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kfp->via = tvb_get_guint8( tvb, 4 );
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if( kfp->version == 3 )
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{
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kfp->target |= ( tvb_get_guint8( tvb, 7 ) << 8 );
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kfp->from |= ( tvb_get_guint8( tvb, 8 ) << 8 );
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kfp->via |= ( tvb_get_guint8( tvb, 9 ) << 8 );
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2007-05-21 23:50:18 +00:00
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}
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/* Ok this does look like Kingfisher, so lets dissect it */
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func_string = val_to_str(kfp->function, function_code_vals, "Unknown function");
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2009-08-09 06:26:46 +00:00
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "Kingfisher");
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2009-09-04 18:40:02 +00:00
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col_clear(pinfo->cinfo, COL_INFO);
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col_add_fstr(pinfo->cinfo, COL_INFO, "%u > %u (%s)", kfp->from, kfp->target, func_string);
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2007-05-21 23:50:18 +00:00
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2007-05-22 02:55:14 +00:00
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message = (kfp->message & 0x0f) | ((kfp->message & 0xf0) >> 4);
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2007-05-21 23:50:18 +00:00
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if(tree){
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item = proto_tree_add_protocol_format(tree, proto_kingfisher, tvb, 0, -1, "Kingfisher Protocol, From RTU: %d, Target RTU: %d", kfp->from, kfp->target );
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kingfisher_tree = proto_item_add_subtree( item, ett_kingfisher );
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}
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/* version */
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proto_tree_add_uint(kingfisher_tree, hf_kingfisher_version, tvb, 6, 1, kfp->version);
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/* system id */
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proto_tree_add_uint_format(kingfisher_tree, hf_kingfisher_system, tvb, 0, 1, kfp->system, "System Identifier: %u (0x%02X)", kfp->system, kfp->system);
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/* target rtu */
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proto_tree_add_uint_format(kingfisher_tree, hf_kingfisher_target, tvb, 1, 1, kfp->target, "Target RTU: %u (0x%02X)", kfp->target, kfp->target);
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/* length */
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proto_tree_add_uint_format(kingfisher_tree, hf_kingfisher_length, tvb, 2, 1, kfp->length, "Length: %u (0x%02X)", kfp->length, kfp->length);
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/* from rtu */
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proto_tree_add_uint_format(kingfisher_tree, hf_kingfisher_from, tvb, 3, 1, kfp->from, "From RTU: %u (0x%02X)", kfp->from, kfp->from);
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/* via rtu */
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proto_tree_add_uint_format(kingfisher_tree, hf_kingfisher_via, tvb, 4, 1, kfp->via, "Via RTU: %u (0x%02X)", kfp->via, kfp->via);
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/* message number */
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proto_tree_add_uint_format(kingfisher_tree, hf_kingfisher_message, tvb, 5, 1, kfp->message, "Message Number: %u (0x%02X, %s)", message, kfp->message, ((kfp->message & 0xf0)?"Response":"Request"));
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/* message function code */
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proto_tree_add_uint_format(kingfisher_tree, hf_kingfisher_function, tvb, 6, 1, kfp->function, "Message Function Code: %u (0x%02X, %s)", kfp->function, kfp->function, func_string);
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/* message data */
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if(kfp->length > ((kfp->version==3)?11:8)){
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proto_tree_add_text(kingfisher_tree, tvb, ((kfp->version==3)?10:7), kfp->length - ((kfp->version==3)?11:8), "Message Data");
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}
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/* checksum */
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proto_tree_add_uint_format(kingfisher_tree, hf_kingfisher_checksum, tvb, kfp->length-1, 2, kfp->checksum, "Checksum: 0x%04X [%s]", kfp->checksum, ((checksum != kfp->checksum)?"incorrect":"correct"));
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return TRUE;
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}
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static gboolean
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dissect_kingfisher_heur(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
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{
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|
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|
gboolean was_kingfisher;
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|
|
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|
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was_kingfisher=dissect_kingfisher(tvb, pinfo, tree, FALSE);
|
|
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|
|
|
if(was_kingfisher){
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|
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conversation_t *conversation;
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|
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/* Ok this was a genuine kingfisher packet. Now create a conversation
|
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dissector for this tcp/udp socket and attach a conversation
|
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|
dissector to it.
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*/
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/*
|
|
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* Do we have a conversation for this connection?
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|
*/
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conversation = find_conversation(pinfo->fd->num,
|
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&pinfo->src, &pinfo->dst,
|
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pinfo->ptype,
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|
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pinfo->srcport, pinfo->destport, 0);
|
|
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|
if (conversation == NULL) {
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|
/* We don't yet have a conversation, so create one. */
|
|
|
|
conversation = conversation_new(pinfo->fd->num,
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&pinfo->src, &pinfo->dst,
|
2009-09-04 18:40:02 +00:00
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|
pinfo->ptype,
|
2007-05-21 23:50:18 +00:00
|
|
|
pinfo->srcport, pinfo->destport, 0);
|
|
|
|
}
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|
|
conversation_set_dissector(conversation, kingfisher_conv_handle);
|
|
|
|
}
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return was_kingfisher;
|
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|
|
}
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|
static gboolean
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|
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dissect_kingfisher_conv(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
|
|
{
|
2009-09-04 18:40:02 +00:00
|
|
|
return dissect_kingfisher(tvb, pinfo, tree, TRUE);
|
2007-05-21 23:50:18 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
proto_register_kingfisher( void )
|
|
|
|
{
|
|
|
|
static hf_register_info hf[] =
|
|
|
|
{
|
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
|
|
|
{ &hf_kingfisher_version, { "Version", "kingfisher.version", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_kingfisher_system, { "System Identifier", "kingfisher.system", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_kingfisher_length, { "Length", "kingfisher.length", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_kingfisher_from, { "From RTU", "kingfisher.from", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_kingfisher_target, { "Target RTU", "kingfisher.target", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_kingfisher_via, { "Via RTU", "kingfisher.via", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_kingfisher_message, { "Message Number", "kingfisher.message", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_kingfisher_function, { "Function Code", "kingfisher.function", FT_UINT8, BASE_DEC, VALS( function_code_vals ), 0x0, NULL, HFILL } },
|
|
|
|
{ &hf_kingfisher_checksum, { "Checksum", "kingfisher.checksum", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
2007-05-21 23:50:18 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
static gint *ett[] = {
|
|
|
|
&ett_kingfisher
|
|
|
|
};
|
|
|
|
|
|
|
|
proto_kingfisher = proto_register_protocol( "Kingfisher", "Kingfisher", "kf" );
|
|
|
|
proto_register_field_array( proto_kingfisher, hf, array_length( hf ) );
|
|
|
|
proto_register_subtree_array( ett, array_length( ett ) );
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
proto_reg_handoff_kingfisher( void )
|
|
|
|
{
|
|
|
|
dissector_handle_t kingfisher_handle=NULL;
|
|
|
|
|
|
|
|
kingfisher_handle = new_create_dissector_handle(dissect_kingfisher_heur, proto_kingfisher);
|
|
|
|
dissector_add("tcp.port", TCP_PORT_KINGFISHER, kingfisher_handle);
|
|
|
|
dissector_add("udp.port", UDP_PORT_KINGFISHER, kingfisher_handle);
|
|
|
|
|
2009-09-04 18:40:02 +00:00
|
|
|
#ifdef SUPPORT_KINGFISHER_SERIES_2
|
2007-05-21 23:50:18 +00:00
|
|
|
dissector_add("tcp.port", TCP_PORT_KINGFISHER_OLD, kingfisher_handle);
|
|
|
|
dissector_add("udp.port", UDP_PORT_KINGFISHER_OLD, kingfisher_handle);
|
2009-09-04 18:40:02 +00:00
|
|
|
#endif
|
2007-05-21 23:50:18 +00:00
|
|
|
kingfisher_conv_handle = new_create_dissector_handle(dissect_kingfisher_conv, proto_kingfisher);
|
|
|
|
|
|
|
|
}
|