diff options
| -rw-r--r-- | epan/CMakeLists.txt | 1 | ||||
| -rw-r--r-- | epan/dissectors/Makefile.common | 1 | ||||
| -rw-r--r-- | epan/dissectors/packet-lg8979.c | 1563 | ||||
| -rw-r--r-- | epan/dissectors/packet-rtacser.c | 8 |
4 files changed, 1573 insertions, 0 deletions
diff --git a/epan/CMakeLists.txt b/epan/CMakeLists.txt index eb8b3d27b4..bebdee542f 100644 --- a/epan/CMakeLists.txt +++ b/epan/CMakeLists.txt @@ -868,6 +868,7 @@ set(DISSECTOR_SRC dissectors/packet-lapsat.c dissectors/packet-ldp.c dissectors/packet-ldss.c + dissectors/packet-lg8979.c dissectors/packet-lge_monitor.c dissectors/packet-linx.c dissectors/packet-lisp-data.c diff --git a/epan/dissectors/Makefile.common b/epan/dissectors/Makefile.common index ec4199fa64..c87ff79bc9 100644 --- a/epan/dissectors/Makefile.common +++ b/epan/dissectors/Makefile.common @@ -788,6 +788,7 @@ DISSECTOR_SRC = \ packet-lapsat.c \ packet-ldp.c \ packet-ldss.c \ + packet-lg8979.c \ packet-lge_monitor.c \ packet-linx.c \ packet-lisp-data.c \ diff --git a/epan/dissectors/packet-lg8979.c b/epan/dissectors/packet-lg8979.c new file mode 100644 index 0000000000..664bb5e058 --- /dev/null +++ b/epan/dissectors/packet-lg8979.c @@ -0,0 +1,1563 @@ +/* packet-lg8979.c + * Routines for Landis & Gyr (Telegyr) 8979 Protocol (lg8979) Dissection + * By Chris Bontje (cbontje[AT]gmail.com + * Copyright 2013-2014 + * + ************************************************************************************************ + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" + +#include <epan/packet.h> +#include "packet-tcp.h" +#include <epan/prefs.h> + +/* Initialize the protocol and registered fields */ +static int proto_lg8979 = -1; +static int hf_lg8979_header = -1; +static int hf_lg8979_shr = -1; +static int hf_lg8979_mfc = -1; +static int hf_lg8979_ack = -1; +static int hf_lg8979_con = -1; +static int hf_lg8979_frz = -1; +static int hf_lg8979_ind = -1; +static int hf_lg8979_sch = -1; +static int hf_lg8979_slg = -1; +static int hf_lg8979_address = -1; +static int hf_lg8979_lastblock = -1; +static int hf_lg8979_funccode = -1; +static int hf_lg8979_length = -1; +static int hf_lg8979_start_ptnum16 = -1; +static int hf_lg8979_start_ptnum8 = -1; +static int hf_lg8979_stop_ptnum16 = -1; +static int hf_lg8979_stop_ptnum8 = -1; +static int hf_lg8979_ang_point = -1; +static int hf_lg8979_adc_ref_zero = -1; +static int hf_lg8979_adc_ref_neg90 = -1; +static int hf_lg8979_adc_ref_pos90 = -1; +static int hf_lg8979_ind_chgrpt_ptnum = -1; +static int hf_lg8979_ind_chgrpt_status = -1; +static int hf_lg8979_ind_chgrpt_change = -1; +static int hf_lg8979_ind_frcrpt_status_b0 = -1; +static int hf_lg8979_ind_frcrpt_status_b1 = -1; +static int hf_lg8979_ind_frcrpt_status_b2 = -1; +static int hf_lg8979_ind_frcrpt_status_b3 = -1; +static int hf_lg8979_ind_frcrpt_status_b4 = -1; +static int hf_lg8979_ind_frcrpt_status_b5 = -1; +static int hf_lg8979_ind_frcrpt_status_b6 = -1; +static int hf_lg8979_ind_frcrpt_status_b7 = -1; +static int hf_lg8979_ind_frcrpt_change_b0 = -1; +static int hf_lg8979_ind_frcrpt_change_b1 = -1; +static int hf_lg8979_ind_frcrpt_change_b2 = -1; +static int hf_lg8979_ind_frcrpt_change_b3 = -1; +static int hf_lg8979_ind_frcrpt_change_b4 = -1; +static int hf_lg8979_ind_frcrpt_change_b5 = -1; +static int hf_lg8979_ind_frcrpt_change_b6 = -1; +static int hf_lg8979_ind_frcrpt_change_b7 = -1; +static int hf_lg8979_soe_chgrpt_ptnum = -1; +static int hf_lg8979_soe_chgrpt_status = -1; +static int hf_lg8979_soe_chgrpt_change = -1; +static int hf_lg8979_soe_frcrpt_status_b0 = -1; +static int hf_lg8979_soe_frcrpt_status_b1 = -1; +static int hf_lg8979_soe_frcrpt_status_b2 = -1; +static int hf_lg8979_soe_frcrpt_status_b3 = -1; +static int hf_lg8979_soe_frcrpt_status_b4 = -1; +static int hf_lg8979_soe_frcrpt_status_b5 = -1; +static int hf_lg8979_soe_frcrpt_status_b6 = -1; +static int hf_lg8979_soe_frcrpt_status_b7 = -1; +static int hf_lg8979_soe_frcrpt_change_b0 = -1; +static int hf_lg8979_soe_frcrpt_change_b1 = -1; +static int hf_lg8979_soe_frcrpt_change_b2 = -1; +static int hf_lg8979_soe_frcrpt_change_b3 = -1; +static int hf_lg8979_soe_frcrpt_change_b4 = -1; +static int hf_lg8979_soe_frcrpt_change_b5 = -1; +static int hf_lg8979_soe_frcrpt_change_b6 = -1; +static int hf_lg8979_soe_frcrpt_change_b7 = -1; +static int hf_lg8979_digin_b0 = -1; +static int hf_lg8979_digin_b1 = -1; +static int hf_lg8979_digin_b2 = -1; +static int hf_lg8979_digin_b3 = -1; +static int hf_lg8979_digin_b4 = -1; +static int hf_lg8979_digin_b5 = -1; +static int hf_lg8979_digin_b6 = -1; +static int hf_lg8979_digin_b7 = -1; +static int hf_lg8979_digin_b8 = -1; +static int hf_lg8979_digin_b9 = -1; +static int hf_lg8979_digin_b10 = -1; +static int hf_lg8979_digin_b11 = -1; +static int hf_lg8979_digin_b12 = -1; +static int hf_lg8979_digin_b13 = -1; +static int hf_lg8979_digin_b14 = -1; +static int hf_lg8979_digin_b15 = -1; +static int hf_lg8979_acc_point = -1; +static int hf_lg8979_soe_logchg_ptnum = -1; +static int hf_lg8979_soe_logchg_newstat = -1; +static int hf_lg8979_soe_logchg_mon = -1; +static int hf_lg8979_soe_logchg_day = -1; +static int hf_lg8979_soe_logchg_hour = -1; +static int hf_lg8979_soe_logchg_min = -1; +static int hf_lg8979_soe_logchg_sec = -1; +static int hf_lg8979_soe_logchg_msec = -1; +static int hf_lg8979_ang_output_val = -1; +static int hf_lg8979_sbo_tripclose = -1; +static int hf_lg8979_sbo_timercnt = -1; +static int hf_lg8979_digout_data = -1; +static int hf_lg8979_pul_output_base = -1; +static int hf_lg8979_pul_output_dur = -1; +static int hf_lg8979_pul_output_rl = -1; +static int hf_lg8979_ang_deadband = -1; +static int hf_lg8979_acc_preset = -1; +static int hf_lg8979_rtucfg_num_chassis = -1; +static int hf_lg8979_rtucfg_chassis_num = -1; +static int hf_lg8979_rtucfg_card_slot = -1; +static int hf_lg8979_timesync_mon = -1; +static int hf_lg8979_timesync_day = -1; +static int hf_lg8979_timesync_hour = -1; +static int hf_lg8979_timesync_min = -1; +static int hf_lg8979_timesync_sec = -1; +static int hf_lg8979_timesync_msec = -1; +static int hf_lg8979_timebias_value = -1; +static int hf_lg8979_timebias_proctime = -1; +static int hf_lg8979_firmware_ver = -1; +static int hf_lg8979_exprpt_code = -1; +static int hf_lg8979_exprpt_parm = -1; +static int hf_lg8979_crc16 = -1; + +/* Initialize the subtree pointers */ +static gint ett_lg8979 = -1; +static gint ett_lg8979_flags = -1; +static gint ett_lg8979_funccode = -1; +static gint ett_lg8979_point = -1; +static gint ett_lg8979_ts = -1; + +#define PORT_LG8979 0 + +/* Globals for L&G 8979 Protocol Preferences */ +static gboolean lg8979_desegment = TRUE; +static guint global_lg8979_tcp_port = PORT_LG8979; /* Port 0, by default */ + +#define LG8979_HEADER 0xFF + +#define LG8979_DIR_INDETERMINATE 0 +#define LG8979_DIR_MASTER_TO_RTU 1 +#define LG8979_DIR_RTU_TO_MASTER 2 + +/* Function Codes */ +#define LG8979_FC_ANG_CHGRPT 0 +#define LG8979_FC_ANG_FRCRPT 1 +#define LG8979_FC_ANGGRP_CHGRPT 2 +#define LG8979_FC_ANGGRP_FRCRPT 3 +#define LG8979_FC_ADC_FRCRPT 5 +#define LG8979_FC_IND_CHGRPT 6 +#define LG8979_FC_IND_FRCRPT 7 +#define LG8979_FC_SOE_CHGRPT 8 +#define LG8979_FC_SOE_FRCRPT 9 +#define LG8979_FC_DIG_FRCRPT 11 +#define LG8979_FC_ACC_CHGRPT 12 +#define LG8979_FC_ACC_FRCRPT 13 +#define LG8979_FC_SOELOG_CHGRPT 14 +#define LG8979_FC_ANG_OUTPUT 20 +#define LG8979_FC_SBO_SELECT 21 +#define LG8979_FC_SBO_OPERATE 22 +#define LG8979_FC_DIG_OUTPUT 23 +#define LG8979_FC_ACC_FREEZE 24 +#define LG8979_FC_PUL_OUTPUT 25 +#define LG8979_FC_PULTR_OUTPUT 26 +#define LG8979_FC_SBO_IMEXECUTE 28 +#define LG8979_FC_RTU_RESTART 30 +#define LG8979_FC_RTU_CONFIG 31 +#define LG8979_FC_TIME_SYNC 32 +#define LG8979_FC_TIME_BIAS 33 +#define LG8979_FC_ANG_DEADBAND 34 +#define LG8979_FC_ANGGRP_DEFINE 35 +#define LG8979_FC_ACC_PRESET 36 +#define LG8979_FC_CONT_REQUEST 37 +#define LG8979_FC_REPEAT_MSG 38 +#define LG8979_FC_FIRMWARE_CFG 39 +#define LG8979_FC_TABLE_READ 47 +#define LG8979_FC_TABLE_WRITE 48 +#define LG8979_FC_SPRPT_INT 50 +#define LG8979_FC_SPRPT_SEQNUM 51 +#define LG8979_FC_EXP_RPT 63 + +static const value_string lg8979_funccode_vals[] = { + { LG8979_FC_ANG_CHGRPT, "Analog Change Report" }, + { LG8979_FC_ANG_FRCRPT, "Analog Force Report" }, + { LG8979_FC_ANGGRP_CHGRPT, "Analog Group Change Report" }, + { LG8979_FC_ANGGRP_FRCRPT, "Analog Group Force Report" }, + { 4, "Unknown/Invalid Function" }, + { LG8979_FC_ADC_FRCRPT, "ADC Reference Force Report" }, + { LG8979_FC_IND_CHGRPT, "Indication Change Report" }, + { LG8979_FC_IND_FRCRPT, "Indication Force Report" }, + { LG8979_FC_SOE_CHGRPT, "SOE Change Report" }, + { LG8979_FC_SOE_FRCRPT, "SOE Force Report" }, + { 10, "Unknown/Invalid Function" }, + { LG8979_FC_DIG_FRCRPT, "Digital Input Force Report" }, + { LG8979_FC_ACC_CHGRPT, "Accumulator Change Report" }, + { LG8979_FC_ACC_FRCRPT, "Accumulator Force Report" }, + { LG8979_FC_SOELOG_CHGRPT, "SOE Log Change Report" }, + { 15, "Unknown/Invalid Function" }, + { 16, "Unknown/Invalid Function" }, + { 17, "Unknown/Invalid Function" }, + { 18, "Unknown/Invalid Function" }, + { 19, "Unknown/Invalid Function" }, + { LG8979_FC_ANG_OUTPUT, "Analog Output" }, + { LG8979_FC_SBO_SELECT, "SBO Select" }, + { LG8979_FC_SBO_OPERATE, "SBO Operate" }, + { LG8979_FC_DIG_OUTPUT, "Digital Output" }, + { LG8979_FC_ACC_FREEZE, "Accumulator Freeze" }, + { LG8979_FC_PUL_OUTPUT, "Pulse Output" }, + { LG8979_FC_PULTR_OUTPUT, "Pulse Train Output" }, + { 27, "Unknown/Invalid Function" }, + { LG8979_FC_SBO_IMEXECUTE, "SBO Immediate Execute" }, + { 29, "Unknown/Invalid Function" }, + { LG8979_FC_RTU_RESTART, "Restart RTU" }, + { LG8979_FC_RTU_CONFIG, "RTU Configuration" }, + { LG8979_FC_TIME_SYNC, "Time Synchronization" }, + { LG8979_FC_TIME_BIAS, "Time Bias" }, + { LG8979_FC_ANG_DEADBAND, "Analog Deadbands" }, + { LG8979_FC_ANGGRP_DEFINE, "Analog Group Define" }, + { LG8979_FC_ACC_PRESET, "Accumulator Preset" }, + { LG8979_FC_CONT_REQUEST, "Continuation Request" }, + { LG8979_FC_REPEAT_MSG, "Repeat Last Message" }, + { LG8979_FC_FIRMWARE_CFG, "Firmware Configuration" }, + { 40, "Unknown/Invalid Function" }, + { 41, "Unknown/Invalid Function" }, + { 42, "Unknown/Invalid Function" }, + { 43, "Unknown/Invalid Function" }, + { 44, "Unknown/Invalid Function" }, + { 45, "Unknown/Invalid Function" }, + { 46, "Unknown/Invalid Function" }, + { LG8979_FC_TABLE_READ, "Table Read" }, + { LG8979_FC_TABLE_WRITE, "Table Write" }, + { 49, "Unknown/Invalid Function" }, + { LG8979_FC_SPRPT_INT, "Spontaneous Report Interval" }, + { LG8979_FC_SPRPT_SEQNUM, "Spontaneous Report Sequence Number" }, + { 52, "Unknown/Invalid Function" }, + { 53, "Unknown/Invalid Function" }, + { 54, "Unknown/Invalid Function" }, + { 55, "Unknown/Invalid Function" }, + { 56, "Unknown/Invalid Function" }, + { 57, "Unknown/Invalid Function" }, + { 58, "Unknown/Invalid Function" }, + { 59, "Unknown/Invalid Function" }, + { 60, "Unknown/Invalid Function" }, + { 61, "Unknown/Invalid Function" }, + { 62, "Unknown/Invalid Function" }, + { LG8979_FC_EXP_RPT, "Exception Report" }, + { 0, NULL } +}; +static value_string_ext lg8979_funccode_vals_ext = VALUE_STRING_EXT_INIT(lg8979_funccode_vals); + +static const value_string lg8979_cardcode_vals[] = { + { 0, "Non-Existent Slot" }, + { 1, "Analog Input" }, + { 2, "A/D Converter" }, + { 3, "Analog Output" }, + { 4, "Indication Input" }, + { 5, "24-Bit Digital Output" }, + { 7, "SBO Control Output" }, + { 8, "Accumulator, Form A" }, + { 11, "32-Bit Digital Output" }, + { 12, "Accumulator, Form C" }, + { 15, "Pulse Output" }, + { 28, "SOE Input" }, + { 29, "KWH Input" }, + { 30, "Serial Data Collector" }, + { 31, "Empty Slot" }, + { 0, NULL } +}; + +static const value_string lg8979_exprpt_code_vals[] = { + { 0x00, "Warm Restart" }, + { 0x01, "Cold Start" }, + { 0x02, "Insufficient Ram" }, + { 0x03, "Bus Failure" }, + { 0x04, "SBO Failure" }, + { 0x05, "Analog Failure" }, + { 0x06, "Indication/SOE Failure" }, + { 0x07, "Card Placement Error" }, + { 0x08, "Not Used" }, + { 0x09, "Invalid Function Code" }, + { 0x0A, "Invalid Block Length" }, + { 0x0B, "Non-Existent Point" }, + { 0x0C, "Invalid Parameter" }, + { 0x0D, "Select/Execute Mismatch" }, + { 0x0E, "Function Not Allowed" }, + { 0x0F, "Not Used" }, + { 0x10, "Database Setup has Changed" }, + { 0x11, "Indication Change Sequence" }, + { 0, NULL } +}; + +static const value_string lg8979_exprpt_parm_vals[] = { + { 0x00, "N/A" }, + { 0x01, "1=Requested CLDSTRT" }, + { 0x02, "N/A" }, + { 0x03, "Unit" }, + { 0x04, "Unit/Slot" }, + { 0x05, "Unit/Slot" }, + { 0x06, "Unit/Slot" }, + { 0x07, "Unit/Slot" }, + { 0x08, "N/A" }, + { 0x09, "Function Code" }, + { 0x0A, "Block Length" }, + { 0x0B, "Point" }, + { 0x0C, "Parameter" }, + { 0x0D, "Execute Point" }, + { 0x0E, "Function Code" }, + { 0x0F, "N/A" }, + { 0x10, "N/A" }, + { 0x11, "1=Time Order (0=Not T/O)" }, + { 0, NULL } +}; + +static const value_string lg8979_sbo_tripclose_vals[] = { + { 0x00, "Trip" }, + { 0x01, "Close" }, + { 0, NULL } +}; + +static const value_string lg8979_pul_output_base_vals[] = { + { 0x00, "10 msec" }, + { 0x01, "100 msec" }, + { 0x02, "1 sec" }, + { 0x03, "10 sec" }, + { 0, NULL } +}; + +static const value_string lg8979_pul_output_rl_vals[] = { + { 0x00, "Lower" }, + { 0x01, "Raise" }, + { 0, NULL } +}; + + +/*****************************************************************/ +/* Adds text to item, with trailing "," if required */ +/*****************************************************************/ +static gboolean +add_item_text(proto_item *item, const gchar *text, gboolean comma_needed) +{ + if (comma_needed) { + proto_item_append_text(item, ", "); + } + proto_item_append_text(item, "%s", text); + return TRUE; +} + +/*************************************************************/ +/* Try to determine "direction" of message. */ +/* Check the data length within the packet and compare */ +/* vs. the function code. Master->RTU messages will have a */ +/* fixed length that can be used to determine the direction */ +/* of the message */ +/*************************************************************/ +static int +classify_lg8979_packet(tvbuff_t *tvb) +{ + guint8 func, len, data_len, flags; + + len = tvb_length(tvb); + /* If TVB length is equal to 5, this is classifed as a 'short response message' */ + /* and is guaranteed to be RTU->Master only */ + if (len == 5) { + return LG8979_DIR_RTU_TO_MASTER; + } + + /* If TVB length is greater than 5, let's dig deeper */ + if (len > 5) { + + flags = tvb_get_guint8(tvb, 1); + + /* Flags vary between message types, so let's try those first to determine the message direction */ + /* If both bit 3 and bit 4 are set, this is almost certainly a RTU->Master message */ + if ( (flags & 0x04) && (flags & 0x08) ){ + return LG8979_DIR_RTU_TO_MASTER; + } + /* If anything is in bits 3-6 without bit 7, this is a RTU->Master message */ + else if ( (flags & 0x78) && !(flags & 0x80) ){ + return LG8979_DIR_RTU_TO_MASTER; + } + + func = tvb_get_guint8(tvb, 3) & 0x7F; + data_len = tvb_get_guint8(tvb, 4); + + /* If we have more data in the tvb then should be there, this is a stacked RTU->Master response */ + if (len > (data_len + 5 + 2)) { + return LG8979_DIR_RTU_TO_MASTER; + } + + switch (func) { + case LG8979_FC_ANG_CHGRPT: + case LG8979_FC_ADC_FRCRPT: + case LG8979_FC_IND_CHGRPT: + case LG8979_FC_SOE_CHGRPT: + case LG8979_FC_ACC_CHGRPT: + case LG8979_FC_SOELOG_CHGRPT: + case LG8979_FC_REPEAT_MSG: + case LG8979_FC_RTU_CONFIG: + case LG8979_FC_FIRMWARE_CFG: + if (data_len == 0) { + return LG8979_DIR_MASTER_TO_RTU; + } + else { + return LG8979_DIR_RTU_TO_MASTER; + } + break; + + case LG8979_FC_ANGGRP_CHGRPT: + case LG8979_FC_ANGGRP_FRCRPT: + if (data_len == 1) { + return LG8979_DIR_MASTER_TO_RTU; + } + else { + return LG8979_DIR_RTU_TO_MASTER; + } + break; + + + case LG8979_FC_DIG_FRCRPT: + case LG8979_FC_ACC_FRCRPT: + case LG8979_FC_TIME_BIAS: + if (data_len == 2) { + return LG8979_DIR_MASTER_TO_RTU; + } + else { + return LG8979_DIR_RTU_TO_MASTER; + } + break; + + case LG8979_FC_ANG_FRCRPT: + case LG8979_FC_IND_FRCRPT: + case LG8979_FC_SOE_FRCRPT: + if (data_len == 4) { + return LG8979_DIR_MASTER_TO_RTU; + } + else { + return LG8979_DIR_RTU_TO_MASTER; + } + break; + + /* These are either totally or mostly master->RTU operations */ + case LG8979_FC_ANG_OUTPUT: + case LG8979_FC_SBO_SELECT: + case LG8979_FC_SBO_OPERATE: + case LG8979_FC_DIG_OUTPUT: + case LG8979_FC_ACC_FREEZE: + case LG8979_FC_PUL_OUTPUT: + case LG8979_FC_PULTR_OUTPUT: + case LG8979_FC_SBO_IMEXECUTE: + case LG8979_FC_TIME_SYNC: + case LG8979_FC_ANG_DEADBAND: + case LG8979_FC_ACC_PRESET: + case LG8979_FC_CONT_REQUEST: + + return LG8979_DIR_MASTER_TO_RTU; + break; + + case LG8979_FC_EXP_RPT: + return LG8979_DIR_RTU_TO_MASTER; + break; + + default: + return LG8979_DIR_INDETERMINATE; + break; + } + } + + /* else, cannot classify */ + return LG8979_DIR_INDETERMINATE; +} + +/******************************************************************************************************/ +/* Code to dissect L&G 8979 Protocol packets */ +/******************************************************************************************************/ +static int +dissect_lg8979(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) +{ +/* Set up structures needed to add the protocol subtree and manage it */ + proto_item *lg8979_item=NULL, *lg8979_flags_item=NULL, *lg8979_fc_item=NULL, *lg8979_point_item=NULL, *lg8979_ts_item=NULL, *lg8979_slot_item=NULL, *lg8979_expparm_item=NULL; + proto_tree *lg8979_tree=NULL, *lg8979_flags_tree=NULL, *lg8979_fc_tree=NULL, *lg8979_point_tree=NULL, *lg8979_ts_tree=NULL; + int offset=0; + guint8 rtu_addr, func, packet_type, data_len, ptnum8, tripclose, rl, exp_code, exp_parm; + guint8 ts_mon, ts_day, ts_hr, ts_min, ts_sec; + guint16 len, ptnum, ptval, ana12_val; + guint16 ts_ms; + gint num_points=0, cnt=0; + gboolean shr, con, frz, ind, sch, slg, ack, comma_needed=FALSE, new_status, change; + + /* Make entries in Protocol column on summary display */ + col_set_str(pinfo->cinfo, COL_PROTOCOL, "L&G 8979"); + col_clear(pinfo->cinfo, COL_INFO); + + len = tvb_length(tvb); + + lg8979_item = proto_tree_add_protocol_format(tree, proto_lg8979, tvb, 0, len, "Landis & Gyr Telegyr 8979"); + lg8979_tree = proto_item_add_subtree(lg8979_item, ett_lg8979); + + /* Add 0xFF Header to Protocol Tree */ + proto_tree_add_item(lg8979_tree, hf_lg8979_header, tvb, offset, 1, ENC_LITTLE_ENDIAN); + offset += 1; + + /* "Request" or "Response" */ + packet_type = classify_lg8979_packet(tvb); + + /* This packet type is classified as a "Request" and is deemed in the direction of "master -> RTU" */ + if (packet_type == LG8979_DIR_MASTER_TO_RTU) { + + col_clear(pinfo->cinfo, COL_INFO); /* clear out stuff in the info column */ + col_add_fstr(pinfo->cinfo, COL_INFO, "Master -> RTU"); + + /* Add Flags to Protocol Tree */ + shr = tvb_get_guint8(tvb, offset) & 0x80; + ack = tvb_get_guint8(tvb, offset) & 0x04; + + lg8979_flags_item = proto_tree_add_text(lg8979_tree, tvb, offset, 1, "Flags"); + lg8979_flags_tree = proto_item_add_subtree(lg8979_flags_item, ett_lg8979_flags); + + proto_item_append_text(lg8979_flags_item, " ("); + if (shr) comma_needed = add_item_text(lg8979_flags_item, "SHR", comma_needed); + if (ack) add_item_text(lg8979_flags_item, "ACK", comma_needed); + proto_item_append_text(lg8979_flags_item, ")"); + + proto_tree_add_item(lg8979_flags_tree, hf_lg8979_shr, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_flags_tree, hf_lg8979_mfc, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_flags_tree, hf_lg8979_ack, tvb, offset, 1, ENC_LITTLE_ENDIAN); + offset += 1; + + /* Add RTU Address to Protocol Tree */ + rtu_addr = tvb_get_guint8(tvb, offset); + col_append_sep_fstr(pinfo->cinfo, COL_INFO, NULL, "Address: %d", rtu_addr); + + proto_tree_add_item(lg8979_tree, hf_lg8979_address, tvb, offset, 1, ENC_LITTLE_ENDIAN); + offset += 1; + + if (!shr) { + /* Add Function Code & last Mark Block to Protocol Tree */ + /* Function code is 7 lower bits of byte , LMB is 8th bit*/ + func = tvb_get_guint8(tvb, offset) & 0x7f; + + col_append_sep_fstr(pinfo->cinfo, COL_INFO, NULL, "%s", val_to_str_const(func, lg8979_funccode_vals, "Unknown Function Code")); + + lg8979_fc_item = proto_tree_add_text(lg8979_tree, tvb, offset, 1, + "Function Code: %s (%d)", val_to_str_const(func, lg8979_funccode_vals, "Unknown Function Code"), func); + lg8979_fc_tree = proto_item_add_subtree(lg8979_fc_item, ett_lg8979_funccode); + + proto_tree_add_item(lg8979_fc_tree, hf_lg8979_lastblock, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_fc_tree, hf_lg8979_funccode, tvb, offset, 1, ENC_LITTLE_ENDIAN); + offset += 1; + + data_len = tvb_get_guint8(tvb, offset); + proto_tree_add_item(lg8979_tree, hf_lg8979_length, tvb, offset, 1, ENC_LITTLE_ENDIAN); + offset += 1; + + switch (func) { + /* Function Code 0 Analog Change Report */ + /* Function Code 7 Indication Force Report */ + /* Function Code 9 SOE Force Report */ + case LG8979_FC_ANG_FRCRPT: + case LG8979_FC_IND_FRCRPT: + case LG8979_FC_SOE_FRCRPT: + proto_tree_add_item(lg8979_tree, hf_lg8979_start_ptnum16, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_tree, hf_lg8979_stop_ptnum16, tvb, offset+2, 2, ENC_LITTLE_ENDIAN); + offset += 4; + break; + + /* Function Code 11 Digital Input Force Report */ + /* Function Code 13 Accumulator Force Report */ + case LG8979_FC_DIG_FRCRPT: + case LG8979_FC_ACC_FRCRPT: + proto_tree_add_item(lg8979_tree, hf_lg8979_start_ptnum8, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_tree, hf_lg8979_stop_ptnum8, tvb, offset+1, 1, ENC_LITTLE_ENDIAN); + offset += 2; + break; + + /* Function Code 20 Analog Output */ + case LG8979_FC_ANG_OUTPUT: + proto_tree_add_item(lg8979_tree, hf_lg8979_start_ptnum8, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_tree, hf_lg8979_ang_output_val, tvb, offset+1, 2, ENC_LITTLE_ENDIAN); + offset += 3; + break; + + /* Function Code 21 SBO Select */ + case LG8979_FC_SBO_SELECT: + + /* Get 8-bit point number and trip/close command-code */ + ptnum = tvb_get_guint8(tvb, offset); + tripclose = (tvb_get_guint8(tvb, offset+1) & 0x80) >> 7; + + lg8979_point_item = proto_tree_add_text(lg8979_tree, tvb, offset, 2, "SBO Command, Pt.Num: %u, Code: %s", + ptnum, val_to_str_const(tripclose, lg8979_sbo_tripclose_vals, "Unknown Control Code")); + lg8979_point_tree = proto_item_add_subtree(lg8979_point_item, ett_lg8979_point); + + /* Update the Information Column with Command Details */ + col_append_sep_fstr(pinfo->cinfo, COL_INFO, NULL, "Output: %u, Code: %s", + ptnum, val_to_str_const(tripclose, lg8979_sbo_tripclose_vals, "Unknown Control Code")); + + /* Add SBO Select Details to tree */ + proto_tree_add_item(lg8979_point_tree, hf_lg8979_start_ptnum8, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_sbo_tripclose, tvb, offset+1, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_sbo_timercnt, tvb, offset+1, 1, ENC_LITTLE_ENDIAN); + offset += 2; + break; + + /* Function Code 22 SBO Operate */ + case LG8979_FC_SBO_OPERATE: + + /* Get 8-bit point number */ + ptnum = tvb_get_guint8(tvb, offset); + + /* Update the Information Column with Command Details */ + col_append_sep_fstr(pinfo->cinfo, COL_INFO, NULL, "Output: %u", ptnum); + + /* Add 8-bit point number to tree */ + proto_tree_add_item(lg8979_tree, hf_lg8979_start_ptnum8, tvb, offset, 1, ENC_LITTLE_ENDIAN); + offset += 1; + break; + + /* Function Code 23 Digital Output */ + case LG8979_FC_DIG_OUTPUT: + + /* Add Digital Output Details to tree */ + proto_tree_add_item(lg8979_tree, hf_lg8979_start_ptnum8, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_tree, hf_lg8979_digout_data, tvb, offset+1, 3, ENC_LITTLE_ENDIAN); + offset += 4; + break; + + /* Function Code 25 Pulse Output */ + case LG8979_FC_PUL_OUTPUT: + + ptnum = tvb_get_guint8(tvb, offset); + rl = (tvb_get_guint8(tvb, offset+1) & 0x80) >> 7; + + lg8979_point_item = proto_tree_add_text(lg8979_tree, tvb, offset, 2, "Pulse Output, Pt.Num: %u, Code: %s", + ptnum, val_to_str_const(rl, lg8979_pul_output_rl_vals, "Unknown Control Code")); + lg8979_point_tree = proto_item_add_subtree(lg8979_point_item, ett_lg8979_point); + + /* Add Pulse Output Details to tree */ + proto_tree_add_item(lg8979_point_tree, hf_lg8979_start_ptnum8, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_pul_output_base, tvb, offset+1, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_pul_output_dur, tvb, offset+1, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_pul_output_rl, tvb, offset+1, 1, ENC_LITTLE_ENDIAN); + offset += 2; + break; + + /* Function Code 32 Time Synchronization */ + case LG8979_FC_TIME_SYNC: + + /* Add 7-byte time-sync value to tree */ + ts_mon = tvb_get_guint8(tvb, offset); + ts_day = tvb_get_guint8(tvb, offset+1); + ts_hr = tvb_get_guint8(tvb, offset+2); + ts_min = tvb_get_guint8(tvb, offset+3); + ts_sec = tvb_get_guint8(tvb, offset+4); + ts_ms = tvb_get_letohs(tvb, offset+5); + + lg8979_ts_item = proto_tree_add_text(lg8979_tree, tvb, offset, 7, "Time-Sync Value: %02d/%02d %02d:%02d:%02d.%03d", ts_mon, ts_day, ts_hr, ts_min, ts_sec, ts_ms); + lg8979_ts_tree = proto_item_add_subtree(lg8979_ts_item, ett_lg8979_ts); + + proto_tree_add_item(lg8979_ts_tree, hf_lg8979_timesync_mon, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_ts_tree, hf_lg8979_timesync_day, tvb, offset+1, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_ts_tree, hf_lg8979_timesync_hour, tvb, offset+2, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_ts_tree, hf_lg8979_timesync_min, tvb, offset+3, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_ts_tree, hf_lg8979_timesync_sec, tvb, offset+4, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_ts_tree, hf_lg8979_timesync_msec, tvb, offset+5, 2, ENC_LITTLE_ENDIAN); + offset += 7; + break; + + /* Function Code 33 Time Bias */ + case LG8979_FC_TIME_BIAS: + proto_tree_add_item(lg8979_tree, hf_lg8979_timebias_value, tvb, offset, 2, ENC_LITTLE_ENDIAN); + offset += 2; + break; + + /* Function Code 34 Analog Deadband Write */ + case LG8979_FC_ANG_DEADBAND: + + /* Get analog point number base and add to tree */ + ptnum = tvb_get_letohs(tvb, offset); + proto_tree_add_item(lg8979_tree, hf_lg8979_start_ptnum16, tvb, offset, 2, ENC_LITTLE_ENDIAN); + offset += 2; + + num_points = (data_len-2); + + for (cnt=0; cnt<num_points; cnt++) { + + ptval = tvb_get_guint8(tvb, offset); + proto_tree_add_uint_format(lg8979_tree, hf_lg8979_ang_deadband, tvb, offset, 1, ptnum, "Point Number %u: New Deadband: %u", ptnum, ptval); + ptnum += 1; + offset += 1; + } + + break; + + /* Function Code 36 Accumulator Preset */ + case LG8979_FC_ACC_PRESET: + + /* Each qty to follow has a 8-bit point number followed by a 16-bit value */ + num_points = ((data_len)/3); + + for (cnt=0; cnt<num_points; cnt++) { + + ptnum8 = tvb_get_guint8(tvb, offset); + ptval = tvb_get_letohs(tvb, offset+1); + proto_tree_add_uint_format(lg8979_tree, hf_lg8979_acc_preset, tvb, offset, 3, ptnum8, "Acc Point Number %u: Preset: %u", ptnum8, ptval); + offset += 3; + } + + break; + + default: + break; + } /* func */ + + } /* !shr */ + + /* Add CRC-16 */ + proto_tree_add_item(lg8979_tree, hf_lg8979_crc16, tvb, offset, 2, ENC_BIG_ENDIAN); + + } + /* This packet type is classified as a "Response" and is deemed in the direction of "RTU -> master" */ + else if (packet_type == LG8979_DIR_RTU_TO_MASTER) { + + col_clear(pinfo->cinfo, COL_INFO); /* clear out stuff in the info column */ + col_add_fstr(pinfo->cinfo, COL_INFO, "RTU -> Master"); + + /* Retrieve and add Flags to Protocol Tree */ + shr = tvb_get_guint8(tvb, offset) & 0x80; + con = tvb_get_guint8(tvb, offset) & 0x40; + frz = tvb_get_guint8(tvb, offset) & 0x20; + ind = tvb_get_guint8(tvb, offset) & 0x10; + sch = tvb_get_guint8(tvb, offset) & 0x08; + slg = tvb_get_guint8(tvb, offset) & 0x04; + + lg8979_flags_item = proto_tree_add_text(lg8979_tree, tvb, offset, 1, "Flags"); + lg8979_flags_tree = proto_item_add_subtree(lg8979_flags_item, ett_lg8979_flags); + + proto_item_append_text(lg8979_flags_item, " ("); + if (shr) comma_needed = add_item_text(lg8979_flags_item, "SHR", comma_needed); + if (con) comma_needed = add_item_text(lg8979_flags_item, "CON", comma_needed); + if (frz) comma_needed = add_item_text(lg8979_flags_item, "FRZ", comma_needed); + if (ind) comma_needed = add_item_text(lg8979_flags_item, "IND", comma_needed); + if (sch) comma_needed = add_item_text(lg8979_flags_item, "SCH", comma_needed); + if (slg) add_item_text(lg8979_flags_item, "SLG", comma_needed); + proto_item_append_text(lg8979_flags_item, ")"); + + proto_tree_add_item(lg8979_flags_tree, hf_lg8979_shr, tvb, offset, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(lg8979_flags_tree, hf_lg8979_con, tvb, offset, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(lg8979_flags_tree, hf_lg8979_frz, tvb, offset, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(lg8979_flags_tree, hf_lg8979_ind, tvb, offset, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(lg8979_flags_tree, hf_lg8979_sch, tvb, offset, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(lg8979_flags_tree, hf_lg8979_slg, tvb, offset, 1, ENC_BIG_ENDIAN); + offset += 1; + + /* Add RTU Address to Protocol Tree */ + rtu_addr = tvb_get_guint8(tvb, offset); + col_append_sep_fstr(pinfo->cinfo, COL_INFO, NULL, "Address: %d", rtu_addr); + + proto_tree_add_item(lg8979_tree, hf_lg8979_address, tvb, offset, 1, ENC_BIG_ENDIAN); + offset += 1; + + /* If this is not a short response, and there are at least 2 bytes remaining continue to process function codes */ + while ((!shr) && (tvb_length_remaining(tvb, offset) > 2)){ + + /* Add Function Code & last Mark Block to Protocol Tree */ + /* Function code is 7 lower bits of byte , LMB is 8th bit*/ + func = tvb_get_guint8(tvb, offset) & 0x7f; + col_append_sep_fstr(pinfo->cinfo, COL_INFO, NULL, "%s", val_to_str_const(func, lg8979_funccode_vals, "Unknown Function Code")); + + lg8979_fc_item = proto_tree_add_text(lg8979_tree, tvb, offset, 1, + "Function Code: %s (%d)", val_to_str_const(func, lg8979_funccode_vals, "Unknown Function Code"), func); + lg8979_fc_tree = proto_item_add_subtree(lg8979_fc_item, ett_lg8979_funccode); + + proto_tree_add_item(lg8979_fc_tree, hf_lg8979_lastblock, tvb, offset, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(lg8979_fc_tree, hf_lg8979_funccode, tvb, offset, 1, ENC_BIG_ENDIAN); + offset += 1; + + data_len = tvb_get_guint8(tvb, offset); + proto_tree_add_item(lg8979_tree, hf_lg8979_length, tvb, offset, 1, ENC_BIG_ENDIAN); + offset += 1; + + switch (func) { + /* Function Code 0 Analog Change Report */ + case LG8979_FC_ANG_CHGRPT: + + num_points = (data_len / 3); + + for (cnt=0; cnt<num_points; cnt++) { + + ptnum = ( tvb_get_guint8(tvb, offset) | ((tvb_get_guint8(tvb, offset+1) & 0x0F) << 8) ); + ptval = ( ((tvb_get_guint8(tvb, offset+1) & 0xF0) >> 4) | (tvb_get_guint8(tvb, offset+2) << 4) ); + proto_tree_add_uint_format(lg8979_tree, hf_lg8979_ang_point, tvb, offset, 3, ptnum, "Point Number %u: %u", ptnum, ptval); + offset += 3; + } + break; + + /* Function Code 1 Analog Force Report */ + case LG8979_FC_ANG_FRCRPT: + + ptnum = tvb_get_letohs(tvb, offset); + proto_tree_add_item(lg8979_tree, hf_lg8979_start_ptnum16, tvb, offset, 2, ENC_LITTLE_ENDIAN); + offset += 2; + + /* Decode 12-bit analog data following this 3-byte bit pattern. + * Byte 1: PtVal 'N' LSB + * Byte 2: PtVal 'N+1' LSB : PtVal 'N' MSB + * Byte 3: PtVal 'N+1' MSB + * To determine the number of points based on the data bytes, we need to know + * if we have an even or odd number of data bytes. + */ + + /* even number of data bytes */ + if (((data_len-2) % 3) == 0) { + num_points = (((data_len-2) / 3) * 2); + } + /* odd number of data bytes */ + else { + num_points = ((((data_len-2) / 3) * 2) + 1); + } + + /* loop through the data bytes decoding 12-bit analogs. When on an even count, offset by 1 and on an odd, offset by 2. */ + for (cnt=0; cnt < num_points; cnt++) { + if (cnt%2 == 0) { + + ana12_val = ( tvb_get_guint8(tvb, offset) | ((tvb_get_guint8(tvb, offset+1) & 0x0F) << 8) ); + proto_tree_add_uint_format(lg8979_tree, hf_lg8979_ang_point, tvb, offset, 2, ptnum, "Point Number %u: %u", ptnum, ana12_val); + offset += 1; + + /* If we are in the last run through the for loop, increment the offset by 1 more byte than normal */ + if (cnt == (num_points - 1)) { + offset += 1; + } + } + else { + + ana12_val = ( ((tvb_get_guint8(tvb, offset) & 0xF0) >> 4) | (tvb_get_guint8(tvb, offset+1) << 4) ); + proto_tree_add_uint_format(lg8979_tree, hf_lg8979_ang_point, tvb, offset, 2, ptnum, "Point Number %u: %u", ptnum, ana12_val); + offset += 2; + } + ptnum += 1; + } + + break; + + /* Function Code 5 ADC Reference Force Report */ + /* Same byte pattern as 3 sequential analogs in a Force Report would follow */ + case LG8979_FC_ADC_FRCRPT: + + proto_tree_add_item(lg8979_tree, hf_lg8979_start_ptnum16, tvb, offset, 2, ENC_LITTLE_ENDIAN); + offset += 2; + + /* Retrieve the 0 and -90% references */ + ana12_val = ( tvb_get_guint8(tvb, offset) | ((tvb_get_guint8(tvb, offset+1) & 0x0F) << 8) ); + proto_tree_add_uint(lg8979_tree, hf_lg8979_adc_ref_zero, tvb, offset, 2, ana12_val); + + ana12_val = ( ((tvb_get_guint8(tvb, offset+1) & 0xF0) >> 4) | (tvb_get_guint8(tvb, offset+2) << 4) ); + proto_tree_add_uint(lg8979_tree, hf_lg8979_adc_ref_neg90, tvb, offset+1, 2, ana12_val); + + offset += 3; + + /* Retreive the +90% reference */ + ana12_val = ( tvb_get_guint8(tvb, offset) | ((tvb_get_guint8(tvb, offset+1) & 0x0F) << 8) ); + proto_tree_add_uint(lg8979_tree, hf_lg8979_adc_ref_pos90, tvb, offset, 2, ana12_val); + offset += 2; + + break; + + /* Function Code 6 Indication Change Report */ + case LG8979_FC_IND_CHGRPT: + + num_points = (data_len / 2); + + for (cnt=0; cnt<num_points; cnt++) { + /* Get 12-bit point number and new status / change bits */ + ptnum = tvb_get_letohs(tvb, offset) & 0xFFF; + new_status = (tvb_get_guint8(tvb, offset+1) & 0x80) >> 7; + change = (tvb_get_guint8(tvb, offset+1) & 0x40) >> 6; + + lg8979_point_item = proto_tree_add_text(lg8979_tree, tvb, offset, 2, + "Indication Change Report, Point Number: %u, Status: %u, Change %u", ptnum, new_status, change); + lg8979_point_tree = proto_item_add_subtree(lg8979_point_item, ett_lg8979_point); + + proto_tree_add_item(lg8979_point_tree, hf_lg8979_ind_chgrpt_ptnum, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_ind_chgrpt_status, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_ind_chgrpt_change, tvb, offset, 2, ENC_LITTLE_ENDIAN); + + offset += 2; + } + + break; + + /* Function Code 7 Indication Force Report */ + case LG8979_FC_IND_FRCRPT: + + ptnum = tvb_get_letohs(tvb, offset); + proto_tree_add_item(lg8979_tree, hf_lg8979_start_ptnum16, tvb, offset, 2, ENC_LITTLE_ENDIAN); + offset += 2; + + num_points = ((data_len - 2) / 2); + + for (cnt=0; cnt<num_points; cnt++) { + lg8979_point_item = proto_tree_add_text(lg8979_tree, tvb, offset, 1, "Indication Status, Base Point Num %d", ptnum); + lg8979_point_tree = proto_item_add_subtree(lg8979_point_item, ett_lg8979_point); + + proto_tree_add_item(lg8979_point_tree, hf_lg8979_ind_frcrpt_status_b0, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_ind_frcrpt_status_b1, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_ind_frcrpt_status_b2, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_ind_frcrpt_status_b3, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_ind_frcrpt_status_b4, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_ind_frcrpt_status_b5, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_ind_frcrpt_status_b6, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_ind_frcrpt_status_b7, tvb, offset, 1, ENC_LITTLE_ENDIAN); + offset += 1; + + lg8979_point_item = proto_tree_add_text(lg8979_tree, tvb, offset, 1, "Indication Change, Base Point Num %d", ptnum); + lg8979_point_tree = proto_item_add_subtree(lg8979_point_item, ett_lg8979_point); + + proto_tree_add_item(lg8979_point_tree, hf_lg8979_ind_frcrpt_change_b0, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_ind_frcrpt_change_b1, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_ind_frcrpt_change_b2, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_ind_frcrpt_change_b3, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_ind_frcrpt_change_b4, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_ind_frcrpt_change_b5, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_ind_frcrpt_change_b6, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_ind_frcrpt_change_b7, tvb, offset, 1, ENC_LITTLE_ENDIAN); + offset += 1; + + ptnum += 8; + } + + break; + + /* Function Code 8 SOE Change Report */ + case LG8979_FC_SOE_CHGRPT: + + num_points = (data_len / 2); + + for (cnt=0; cnt<num_points; cnt++) { + /* Get 12-bit point number and new status / change bits */ + ptnum = tvb_get_letohs(tvb, offset) & 0xFFF; + new_status = (tvb_get_guint8(tvb, offset+1) & 0x80) >> 7; + change = (tvb_get_guint8(tvb, offset+1) & 0x40) >> 6; + + lg8979_point_item = proto_tree_add_text(lg8979_tree, tvb, offset, 2, + "SOE Change Report, Point Number: %u, Status: %u, Change %u", ptnum, new_status, change); + lg8979_point_tree = proto_item_add_subtree(lg8979_point_item, ett_lg8979_point); + + proto_tree_add_item(lg8979_point_tree, hf_lg8979_soe_chgrpt_ptnum, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_soe_chgrpt_status, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_soe_chgrpt_change, tvb, offset, 2, ENC_LITTLE_ENDIAN); + + offset += 2; + } + + break; + + /* Function Code 9 SOE Force Report */ + case LG8979_FC_SOE_FRCRPT: + + ptnum = tvb_get_letohs(tvb, offset); + proto_tree_add_item(lg8979_tree, hf_lg8979_start_ptnum16, tvb, offset, 2, ENC_LITTLE_ENDIAN); + offset += 2; + + num_points = ((data_len - 2) / 2); + + for (cnt=0; cnt<num_points; cnt++) { + lg8979_point_item = proto_tree_add_text(lg8979_tree, tvb, offset, 1, "SOE Status, Base Point Num %d", ptnum); + lg8979_point_tree = proto_item_add_subtree(lg8979_point_item, ett_lg8979_point); + + proto_tree_add_item(lg8979_point_tree, hf_lg8979_soe_frcrpt_status_b0, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_soe_frcrpt_status_b1, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_soe_frcrpt_status_b2, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_soe_frcrpt_status_b3, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_soe_frcrpt_status_b4, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_soe_frcrpt_status_b5, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_soe_frcrpt_status_b6, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_soe_frcrpt_status_b7, tvb, offset, 1, ENC_LITTLE_ENDIAN); + offset += 1; + + lg8979_point_item = proto_tree_add_text(lg8979_tree, tvb, offset, 1, "SOE Change, Base Point Num %d", ptnum); + lg8979_point_tree = proto_item_add_subtree(lg8979_point_item, ett_lg8979_point); + + proto_tree_add_item(lg8979_point_tree, hf_lg8979_soe_frcrpt_change_b0, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_soe_frcrpt_change_b1, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_soe_frcrpt_change_b2, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_soe_frcrpt_change_b3, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_soe_frcrpt_change_b4, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_soe_frcrpt_change_b5, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_soe_frcrpt_change_b6, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_soe_frcrpt_change_b7, tvb, offset, 1, ENC_LITTLE_ENDIAN); + offset += 1; + + ptnum += 8; + } + + break; + + /* Function Code 11 Digital Input Force Report */ + case LG8979_FC_DIG_FRCRPT: + + ptnum8 = tvb_get_guint8(tvb, offset); + proto_tree_add_item(lg8979_tree, hf_lg8979_start_ptnum8, tvb, offset, 1, ENC_LITTLE_ENDIAN); + offset += 1; + + /* 1 byte per start block and 2 bytes per 16-bit block to follow */ + num_points = ((data_len-1)/2); + + for (cnt=0; cnt<num_points; cnt++) { + + lg8979_point_item = proto_tree_add_text(lg8979_tree, tvb, offset, 2, "Digital Input Block %d", ptnum8); + lg8979_point_tree = proto_item_add_subtree(lg8979_point_item, ett_lg8979_point); + + proto_tree_add_item(lg8979_point_tree, hf_lg8979_digin_b0, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_digin_b1, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_digin_b2, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_digin_b3, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_digin_b4, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_digin_b5, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_digin_b6, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_digin_b7, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_digin_b8, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_digin_b9, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_digin_b10, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_digin_b11, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_digin_b12, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_digin_b13, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_digin_b14, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_digin_b15, tvb, offset, 2, ENC_LITTLE_ENDIAN); + + ptnum8 += 1; + offset += 2; + } + + break; + + + /* Function Code 12 Accumulator Change Report */ + /* Function Code 13 Accumulator Force Report */ + case LG8979_FC_ACC_CHGRPT: + case LG8979_FC_ACC_FRCRPT: + + ptnum8 = tvb_get_guint8(tvb, offset); + proto_tree_add_item(lg8979_tree, hf_lg8979_start_ptnum8, tvb, offset, 1, ENC_LITTLE_ENDIAN); + offset += 1; + + /* 1 byte for start point number and 2 bytes for each 16-bit accumulator value */ + num_points = ((data_len-1) / 2); + + for (cnt=0; cnt<num_points; cnt++) { + + ptval = tvb_get_letohs(tvb, offset); + + lg8979_point_item = proto_tree_add_item(lg8979_tree, hf_lg8979_acc_point, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_item_prepend_text(lg8979_point_item, "Point Number %u, ", ptnum8); + + offset += 2; + ptnum8 += 1; + + } + + break; + + /* Function Code 14 SOE Log Change Report */ + case LG8979_FC_SOELOG_CHGRPT: + + /* 9 bytes for each SOE Record */ + num_points = (data_len / 9); + + for (cnt=0; cnt<num_points; cnt++) { + + /* Get 12-bit point number and new status bit */ + ptnum = tvb_get_letohs(tvb, offset) & 0xFFF; + new_status = (tvb_get_guint8(tvb, offset+1) & 0x80) >> 7; + + lg8979_point_item = proto_tree_add_text(lg8979_tree, tvb, offset, 9, + "SOE Log Change Report, Point Number: %u, New Status: %u", ptnum, new_status); + lg8979_point_tree = proto_item_add_subtree(lg8979_point_item, ett_lg8979_point); + + /* Add 12-bit point number and "new status" bit to tree */ + proto_tree_add_item(lg8979_point_tree, hf_lg8979_soe_logchg_ptnum, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_point_tree, hf_lg8979_soe_logchg_newstat, tvb, offset, 2, ENC_LITTLE_ENDIAN); + offset += 2; + + /* Add 7-byte time-stamp to tree */ + ts_mon = tvb_get_guint8(tvb, offset); + ts_day = tvb_get_guint8(tvb, offset+1); + ts_hr = tvb_get_guint8(tvb, offset+2); + ts_min = tvb_get_guint8(tvb, offset+3); + ts_sec = tvb_get_guint8(tvb, offset+4); + ts_ms = tvb_get_letohs(tvb, offset+5); + + lg8979_ts_item = proto_tree_add_text(lg8979_point_tree, tvb, offset, 7, "SOE Time Stamp: [%02d/%02d %02d:%02d:%02d.%03d]", ts_mon, ts_day, ts_hr, ts_min, ts_sec, ts_ms); + lg8979_ts_tree = proto_item_add_subtree(lg8979_ts_item, ett_lg8979_ts); + + proto_tree_add_item(lg8979_ts_tree, hf_lg8979_soe_logchg_mon, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_ts_tree, hf_lg8979_soe_logchg_day, tvb, offset+1, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_ts_tree, hf_lg8979_soe_logchg_hour, tvb, offset+2, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_ts_tree, hf_lg8979_soe_logchg_min, tvb, offset+3, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_ts_tree, hf_lg8979_soe_logchg_sec, tvb, offset+4, 1, ENC_LITTLE_ENDIAN); + proto_tree_add_item(lg8979_ts_tree, hf_lg8979_soe_logchg_msec, tvb, offset+5, 2, ENC_LITTLE_ENDIAN); + offset += 7; + } + + break; + + /* Function Code 31 RTU Configuration */ + case LG8979_FC_RTU_CONFIG: + + /* Number of IO Chassis */ + proto_tree_add_item(lg8979_tree, hf_lg8979_rtucfg_num_chassis, tvb, offset, 1, ENC_LITTLE_ENDIAN); + offset += 1; + + /* Chassis Number */ + proto_tree_add_item(lg8979_tree, hf_lg8979_rtucfg_chassis_num, tvb, offset, 1, ENC_LITTLE_ENDIAN); + offset += 1; + + /* Card Codes For Each Slot (0-15) */ + for (cnt=0; cnt<16; cnt++) { + lg8979_slot_item = proto_tree_add_item(lg8979_tree, hf_lg8979_rtucfg_card_slot, tvb, offset, 1, ENC_LITTLE_ENDIAN); + proto_item_prepend_text(lg8979_slot_item, "Slot %d, ", cnt); + offset += 1; + } + + break; + + /* Function Code 33 Time Bias */ + case LG8979_FC_TIME_BIAS: + /* Add Time Bias "Processing Time" to tree */ + proto_tree_add_item(lg8979_tree, hf_lg8979_timebias_proctime, tvb, offset, 1, ENC_LITTLE_ENDIAN); + offset += 1; + break; + + /* Function Code 39 Firmware Configuration */ + case LG8979_FC_FIRMWARE_CFG: + proto_tree_add_item(lg8979_tree, hf_lg8979_firmware_ver, tvb, offset, 2, ENC_LITTLE_ENDIAN); + offset += 2; + break; + + /* Function Code 63 Exception Report */ + /* Parameter byte is context-sensitive to the Code byte used */ + /* For example, if the Code byte is 0x01 (Cold Start) the parameter byte is always 0 */ + /* If the code byte is 0x09 (Function Code), the parameter byte is the value of the disallowed function code */ + case LG8979_FC_EXP_RPT: + + exp_code = tvb_get_guint8(tvb, offset); + exp_parm = tvb_get_guint8(tvb, offset+1); + + proto_tree_add_item(lg8979_tree, hf_lg8979_exprpt_code, tvb, offset, 1, ENC_LITTLE_ENDIAN); + lg8979_expparm_item = proto_tree_add_item(lg8979_tree, hf_lg8979_exprpt_parm, tvb, offset+1, 1, ENC_LITTLE_ENDIAN); + proto_item_prepend_text(lg8979_expparm_item, "Parameter: %s, ", + val_to_str_const(exp_code, lg8979_exprpt_parm_vals, "Unknown Parameters")); + /* Function code lookup, if required */ + if (exp_code == 14) { + proto_item *lg8979_dfc_item=NULL; + lg8979_dfc_item = proto_tree_add_text(lg8979_tree, tvb, offset+1, 1, "Disallowed Function Code: %s", + val_to_str_const(exp_parm, lg8979_funccode_vals, "Unknown Function Code")); + PROTO_ITEM_SET_GENERATED(lg8979_dfc_item); + } + + offset += 2; + break; + + default: + break; + } + + } /* !shr */ + + if (shr) { + col_append_sep_fstr(pinfo->cinfo, COL_INFO, NULL, "Short Response"); + } + + /* Add CRC-16 */ + proto_tree_add_item(lg8979_tree, hf_lg8979_crc16, tvb, offset, 2, ENC_BIG_ENDIAN); + + } /* packet type */ + + return tvb_length(tvb); + +} + +/******************************************************************************************************/ +/* Return length of L&G 8979 Protocol over TCP message (used for re-assembly) */ +/******************************************************************************************************/ +static guint +get_lg8979_len(packet_info *pinfo _U_, tvbuff_t *tvb, int offset _U_) +{ + + guint len; + len = tvb_length(tvb); + + return len; +} + +/******************************************************************************************************/ +/* Dissect (and possibly Re-assemble) L&G 8979 protocol payload data */ +/******************************************************************************************************/ +static int +dissect_lg8979_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) +{ + + gint length = tvb_length(tvb); + + /* Check for a L&G8979 packet. It should begin with 0xFF */ + if(length < 2 || tvb_get_guint8(tvb, 0) != 0xFF) { + /* Not a L&G 8979 Protocol packet, just happened to use the same port */ + return FALSE; + } + + tcp_dissect_pdus(tvb, pinfo, tree, lg8979_desegment, 1, + get_lg8979_len, dissect_lg8979, data); + + return tvb_length(tvb); +} + + +/******************************************************************************************************/ +/* Dissect "simple" L&G 8979 protocol payload (no TCP re-assembly) */ +/******************************************************************************************************/ +static int +dissect_lg8979_simple(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) +{ + gint length = tvb_length(tvb); + + /* Check for a L&G8979 packet. It should begin with 0xFF */ + if(length < 2 || tvb_get_guint8(tvb, 0) != 0xFF) { + /* Not a L&G 8979 Protocol packet, just happened to use the same port */ + return FALSE; + } + + dissect_lg8979(tvb, pinfo, tree, data); + + return tvb_length(tvb); +} + +/******************************************************************************************************/ +/* Register the protocol with Wireshark */ +/******************************************************************************************************/ +void proto_reg_handoff_lg8979(void); + +void +proto_register_lg8979(void) +{ + /* L&G 8979 Protocol header fields */ + static hf_register_info lg8979_hf[] = { + { &hf_lg8979_header, + { "Header", "lg8979.header", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_shr, + { "SHR: Short Response Flag", "lg8979.shr", FT_UINT8, BASE_DEC, NULL, 0x80, NULL, HFILL }}, + { &hf_lg8979_mfc, + { "MFC: Multi Function Code", "lg8979.mfc", FT_UINT8, BASE_DEC, NULL, 0x78, NULL, HFILL }}, + { &hf_lg8979_ack, + { "ACK: Acknowledge Flag", "lg8979.ack", FT_UINT8, BASE_DEC, NULL, 0x04, NULL, HFILL }}, + { &hf_lg8979_con, + { "CON: Continuation Flag", "lg8979.con", FT_UINT8, BASE_DEC, NULL, 0x40, NULL, HFILL }}, + { &hf_lg8979_frz, + { "FRZ: Accumulator Freeze Flag", "lg8979.frz", FT_UINT8, BASE_DEC, NULL, 0x20, NULL, HFILL }}, + { &hf_lg8979_ind, + { "IND: Indication Change Flag", "lg8979.ind", FT_UINT8, BASE_DEC, NULL, 0x10, NULL, HFILL }}, + { &hf_lg8979_sch, + { "SCH: SOE Change Flag", "lg8979.sch", FT_UINT8, BASE_DEC, NULL, 0x08, NULL, HFILL }}, + { &hf_lg8979_slg, + { "SLG: SOE Log Flag", "lg8979.slg", FT_UINT8, BASE_DEC, NULL, 0x04, NULL, HFILL }}, + { &hf_lg8979_address, + { "RTU Address", "lg8979.address", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_lastblock, + { "Last Block Mark", "lg8979.lastblock", FT_UINT8, BASE_DEC, NULL, 0x80, NULL, HFILL }}, + { &hf_lg8979_funccode, + { "Function Code", "lg8979.funccode", FT_UINT8, BASE_DEC|BASE_EXT_STRING, &lg8979_funccode_vals_ext, 0x7F, NULL, HFILL }}, + { &hf_lg8979_length, + { "Data Length", "lg8979.length", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_start_ptnum16, + { "Start Point Number (16-bit)", "lg8979.start_ptnum16", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_start_ptnum8, + { "Start Point Number (8-bit) ", "lg8979.start_ptnum8", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_stop_ptnum16, + { "Stop Point Number (16-bit)", "lg8979.stop_ptnum16", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_stop_ptnum8, + { "Stop Point Number (8-bit)", "lg8979.stop_ptnum8", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_ang_point, + { "Analog Point", "lg8979.ang_point", FT_UINT24, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_adc_ref_zero, + { "ADC Reference (0%)", "lg8979.adc_ref_zero", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_adc_ref_neg90, + { "ADC Reference (-90%)", "lg8979.adc_ref_neg90", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_adc_ref_pos90, + { "ADC Reference (+90%)", "lg8979.adc_ref_pos90", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_ind_chgrpt_ptnum, + { "Point Number (12-bit)", "lg8979.ind_chgrpt_ptnum", FT_UINT16, BASE_DEC, NULL, 0x0FFF, NULL, HFILL }}, + { &hf_lg8979_ind_chgrpt_status, + { "Status Bit", "lg8979.ind_chgrpt_status", FT_UINT16, BASE_DEC, NULL, 0x8000, NULL, HFILL }}, + { &hf_lg8979_ind_chgrpt_change, + { "Change Bit", "lg8979.ind_chgrpt_change", FT_UINT16, BASE_DEC, NULL, 0x4000, NULL, HFILL }}, + { &hf_lg8979_ind_frcrpt_status_b0, + { "Status Bit 0", "lg8979.ind.frcrpt.status_b0", FT_BOOLEAN, 8, NULL, 0x01, NULL, HFILL }}, + { &hf_lg8979_ind_frcrpt_status_b1, + { "Status Bit 1", "lg8979.ind.frcrpt.status_b1", FT_BOOLEAN, 8, NULL, 0x02, NULL, HFILL }}, + { &hf_lg8979_ind_frcrpt_status_b2, + { "Status Bit 2", "lg8979.ind.frcrpt.status_b2", FT_BOOLEAN, 8, NULL, 0x04, NULL, HFILL }}, + { &hf_lg8979_ind_frcrpt_status_b3, + { "Status Bit 3", "lg8979.ind.frcrpt.status_b3", FT_BOOLEAN, 8, NULL, 0x08, NULL, HFILL }}, + { &hf_lg8979_ind_frcrpt_status_b4, + { "Status Bit 4", "lg8979.ind.frcrpt.status_b4", FT_BOOLEAN, 8, NULL, 0x10, NULL, HFILL }}, + { &hf_lg8979_ind_frcrpt_status_b5, + { "Status Bit 5", "lg8979.ind.frcrpt.status_b5", FT_BOOLEAN, 8, NULL, 0x20, NULL, HFILL }}, + { &hf_lg8979_ind_frcrpt_status_b6, + { "Status Bit 6", "lg8979.ind.frcrpt.status_b6", FT_BOOLEAN, 8, NULL, 0x40, NULL, HFILL }}, + { &hf_lg8979_ind_frcrpt_status_b7, + { "Status Bit 7", "lg8979.ind.frcrpt.status_b7", FT_BOOLEAN, 8, NULL, 0x80, NULL, HFILL }}, + { &hf_lg8979_ind_frcrpt_change_b0, + { "Change Bit 0", "lg8979.ind.frcrpt.change_b0", FT_BOOLEAN, 8, NULL, 0x01, NULL, HFILL }}, + { &hf_lg8979_ind_frcrpt_change_b1, + { "Change Bit 1", "lg8979.ind.frcrpt.change_b1", FT_BOOLEAN, 8, NULL, 0x02, NULL, HFILL }}, + { &hf_lg8979_ind_frcrpt_change_b2, + { "Change Bit 2", "lg8979.ind.frcrpt.change_b2", FT_BOOLEAN, 8, NULL, 0x04, NULL, HFILL }}, + { &hf_lg8979_ind_frcrpt_change_b3, + { "Change Bit 3", "lg8979.ind.frcrpt.change_b3", FT_BOOLEAN, 8, NULL, 0x08, NULL, HFILL }}, + { &hf_lg8979_ind_frcrpt_change_b4, + { "Change Bit 4", "lg8979.ind.frcrpt.change_b4", FT_BOOLEAN, 8, NULL, 0x10, NULL, HFILL }}, + { &hf_lg8979_ind_frcrpt_change_b5, + { "Change Bit 5", "lg8979.ind.frcrpt.change_b5", FT_BOOLEAN, 8, NULL, 0x20, NULL, HFILL }}, + { &hf_lg8979_ind_frcrpt_change_b6, + { "Change Bit 6", "lg8979.ind.frcrpt.change_b6", FT_BOOLEAN, 8, NULL, 0x40, NULL, HFILL }}, + { &hf_lg8979_ind_frcrpt_change_b7, + { "Change Bit 7", "lg8979.ind.frcrpt.change_b7", FT_BOOLEAN, 8, NULL, 0x80, NULL, HFILL }}, + { &hf_lg8979_soe_chgrpt_ptnum, + { "Point Number (12-bit)", "lg8979.soe_chgrpt_ptnum", FT_UINT16, BASE_DEC, NULL, 0x0FFF, NULL, HFILL }}, + { &hf_lg8979_soe_chgrpt_status, + { "Status Bit", "lg8979.soe_chgrpt_status", FT_UINT16, BASE_DEC, NULL, 0x8000, NULL, HFILL }}, + { &hf_lg8979_soe_chgrpt_change, + { "Change Bit", "lg8979.soe_chgrpt_change", FT_UINT16, BASE_DEC, NULL, 0x4000, NULL, HFILL }}, + { &hf_lg8979_soe_frcrpt_status_b0, + { "Status Bit 0", "lg8979.soe.frcrpt.status_b0", FT_BOOLEAN, 8, NULL, 0x01, NULL, HFILL }}, + { &hf_lg8979_soe_frcrpt_status_b1, + { "Status Bit 1", "lg8979.soe.frcrpt.status_b1", FT_BOOLEAN, 8, NULL, 0x02, NULL, HFILL }}, + { &hf_lg8979_soe_frcrpt_status_b2, + { "Status Bit 2", "lg8979.soe.frcrpt.status_b2", FT_BOOLEAN, 8, NULL, 0x04, NULL, HFILL }}, + { &hf_lg8979_soe_frcrpt_status_b3, + { "Status Bit 3", "lg8979.soe.frcrpt.status_b3", FT_BOOLEAN, 8, NULL, 0x08, NULL, HFILL }}, + { &hf_lg8979_soe_frcrpt_status_b4, + { "Status Bit 4", "lg8979.soe.frcrpt.status_b4", FT_BOOLEAN, 8, NULL, 0x10, NULL, HFILL }}, + { &hf_lg8979_soe_frcrpt_status_b5, + { "Status Bit 5", "lg8979.soe.frcrpt.status_b5", FT_BOOLEAN, 8, NULL, 0x20, NULL, HFILL }}, + { &hf_lg8979_soe_frcrpt_status_b6, + { "Status Bit 6", "lg8979.soe.frcrpt.status_b6", FT_BOOLEAN, 8, NULL, 0x40, NULL, HFILL }}, + { &hf_lg8979_soe_frcrpt_status_b7, + { "Status Bit 7", "lg8979.soe.frcrpt.status_b7", FT_BOOLEAN, 8, NULL, 0x80, NULL, HFILL }}, + { &hf_lg8979_soe_frcrpt_change_b0, + { "Change Bit 0", "lg8979.soe.frcrpt.change_b0", FT_BOOLEAN, 8, NULL, 0x01, NULL, HFILL }}, + { &hf_lg8979_soe_frcrpt_change_b1, + { "Change Bit 1", "lg8979.soe.frcrpt.change_b1", FT_BOOLEAN, 8, NULL, 0x02, NULL, HFILL }}, + { &hf_lg8979_soe_frcrpt_change_b2, + { "Change Bit 2", "lg8979.soe.frcrpt.change_b2", FT_BOOLEAN, 8, NULL, 0x04, NULL, HFILL }}, + { &hf_lg8979_soe_frcrpt_change_b3, + { "Change Bit 3", "lg8979.soe.frcrpt.change_b3", FT_BOOLEAN, 8, NULL, 0x08, NULL, HFILL }}, + { &hf_lg8979_soe_frcrpt_change_b4, + { "Change Bit 4", "lg8979.soe.frcrpt.change_b4", FT_BOOLEAN, 8, NULL, 0x10, NULL, HFILL }}, + { &hf_lg8979_soe_frcrpt_change_b5, + { "Change Bit 5", "lg8979.soe.frcrpt.change_b5", FT_BOOLEAN, 8, NULL, 0x20, NULL, HFILL }}, + { &hf_lg8979_soe_frcrpt_change_b6, + { "Change Bit 6", "lg8979.soe.frcrpt.change_b6", FT_BOOLEAN, 8, NULL, 0x40, NULL, HFILL }}, + { &hf_lg8979_soe_frcrpt_change_b7, + { "Change Bit 7", "lg8979.soe.frcrpt.change_b7", FT_BOOLEAN, 8, NULL, 0x80, NULL, HFILL }}, + { &hf_lg8979_digin_b0, + { "Digital Input Bit 0", "lg8979.digin_b0", FT_BOOLEAN, 16, NULL, 0x0001, NULL, HFILL }}, + { &hf_lg8979_digin_b1, + { "Digital Input Bit 1", "lg8979.digin_b1", FT_BOOLEAN, 16, NULL, 0x0002, NULL, HFILL }}, + { &hf_lg8979_digin_b2, + { "Digital Input Bit 2", "lg8979.digin_b2", FT_BOOLEAN, 16, NULL, 0x0004, NULL, HFILL }}, + { &hf_lg8979_digin_b3, + { "Digital Input Bit 3", "lg8979.digin_b3", FT_BOOLEAN, 16, NULL, 0x0008, NULL, HFILL }}, + { &hf_lg8979_digin_b4, + { "Digital Input Bit 4", "lg8979.digin_b4", FT_BOOLEAN, 16, NULL, 0x0010, NULL, HFILL }}, + { &hf_lg8979_digin_b5, + { "Digital Input Bit 5", "lg8979.digin_b5", FT_BOOLEAN, 16, NULL, 0x0020, NULL, HFILL }}, + { &hf_lg8979_digin_b6, + { "Digital Input Bit 6", "lg8979.digin_b6", FT_BOOLEAN, 16, NULL, 0x0040, NULL, HFILL }}, + { &hf_lg8979_digin_b7, + { "Digital Input Bit 7", "lg8979.digin_b7", FT_BOOLEAN, 16, NULL, 0x0080, NULL, HFILL }}, + { &hf_lg8979_digin_b8, + { "Digital Input Bit 8", "lg8979.digin_b8", FT_BOOLEAN, 16, NULL, 0x0100, NULL, HFILL }}, + { &hf_lg8979_digin_b9, + { "Digital Input Bit 9", "lg8979.digin_b9", FT_BOOLEAN, 16, NULL, 0x0200, NULL, HFILL }}, + { &hf_lg8979_digin_b10, + { "Digital Input Bit 10", "lg8979.digin_b10", FT_BOOLEAN, 16, NULL, 0x0400, NULL, HFILL }}, + { &hf_lg8979_digin_b11, + { "Digital Input Bit 11", "lg8979.digin_b11", FT_BOOLEAN, 16, NULL, 0x0800, NULL, HFILL }}, + { &hf_lg8979_digin_b12, + { "Digital Input Bit 12", "lg8979.digin_b12", FT_BOOLEAN, 16, NULL, 0x1000, NULL, HFILL }}, + { &hf_lg8979_digin_b13, + { "Digital Input Bit 13", "lg8979.digin_b13", FT_BOOLEAN, 16, NULL, 0x2000, NULL, HFILL }}, + { &hf_lg8979_digin_b14, + { "Digital Input Bit 14", "lg8979.digin_b14", FT_BOOLEAN, 16, NULL, 0x4000, NULL, HFILL }}, + { &hf_lg8979_digin_b15, + { "Digital Input Bit 15", "lg8979.digin_b15", FT_BOOLEAN, 16, NULL, 0x8000, NULL, HFILL }}, + { &hf_lg8979_acc_point, + { "Value", "lg8979.acc_point", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_soe_logchg_ptnum, + { "Point Number", "lg8979.soe_logchg_ptnum", FT_UINT16, BASE_DEC, NULL, 0x0FFF, NULL, HFILL }}, + { &hf_lg8979_soe_logchg_newstat, + { "New Status", "lg8979.soe_logchg_newstat", FT_UINT16, BASE_DEC, NULL, 0x8000, NULL, HFILL }}, + { &hf_lg8979_soe_logchg_mon, + { "Month", "lg8979.soe_logchg_mon", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_soe_logchg_day, + { "Day", "lg8979.soe_logchg_day", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_soe_logchg_hour, + { "Hours", "lg8979.soe_logchg_hour", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_soe_logchg_min, + { "Minute", "lg8979.soe_logchg_min", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_soe_logchg_sec, + { "Second", "lg8979.soe_logchg_sec", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_soe_logchg_msec, + { "Milli-Second", "lg8979.soe_logchg_msec", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_ang_output_val, + { "Point Value", "lg8979.ang_output_val", FT_UINT16, BASE_DEC, NULL, 0x0FFF, NULL, HFILL }}, + { &hf_lg8979_sbo_tripclose, + { "Trip/Close Control Code", "lg8979.sbo_tripclose", FT_UINT8, BASE_DEC, lg8979_sbo_tripclose_vals, 0x80, NULL, HFILL }}, + { &hf_lg8979_sbo_timercnt, + { "Timer Count", "lg8979.sbo_timercnt", FT_UINT8, BASE_DEC, NULL, 0x7F, NULL, HFILL }}, + { &hf_lg8979_digout_data, + { "Data", "lg8979.digout_data", FT_UINT24, BASE_HEX, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_pul_output_base, + { "Base Time", "lg8979.pul_output_base", FT_UINT8, BASE_HEX, lg8979_pul_output_base_vals, 0x03, NULL, HFILL }}, + { &hf_lg8979_pul_output_dur, + { "Duration", "lg8979.pul_output_dur", FT_UINT8, BASE_HEX, NULL, 0x7C, NULL, HFILL }}, + { &hf_lg8979_pul_output_rl, + { "Raise/Lower", "lg8979.pul_output_rl", FT_UINT8, BASE_HEX, lg8979_pul_output_rl_vals, 0x80, NULL, HFILL }}, + { &hf_lg8979_ang_deadband, + { "Deadband", "lg8979.ang_deadband", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_acc_preset, + { "Preset Value", "lg8979.acc_preset", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_rtucfg_num_chassis, + { "Number of I/O Chassis in RTU", "lg8979.rtucfg_num_chassis", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_rtucfg_chassis_num, + { "Chassis Number", "lg8979.rtucfg_chassis_num", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_rtucfg_card_slot, + { "Card Code", "lg8979.rtucfg_card_slot", FT_UINT8, BASE_DEC, lg8979_cardcode_vals, 0x0, NULL, HFILL }}, + { &hf_lg8979_timesync_mon, + { "Month", "lg8979.timesync_mon", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_timesync_day, + { "Day", "lg8979.timesync_day", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_timesync_hour, + { "Hours", "lg8979.timesync_hour", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_timesync_min, + { "Minute", "lg8979.timesync_min", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_timesync_sec, + { "Second", "lg8979.timesync_sec", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_timesync_msec, + { "Milli-Second", "lg8979.timesync_msec", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_timebias_value, + { "Time Bias Value", "lg8979.timebias_value", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_firmware_ver, + { "Firmware Version", "lg8979.firmware_ver", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_timebias_proctime, + { "Time Bias Processing Time (ms)", "lg8979.timebias_proctime", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_exprpt_code, + { "Exception Report Code", "lg8979.exprpt_code", FT_UINT8, BASE_DEC, lg8979_exprpt_code_vals, 0x0, NULL, HFILL }}, + { &hf_lg8979_exprpt_parm, + { "Value", "lg8979.exprpt_parm", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_lg8979_crc16, + { "CRC-16", "lg8979.crc16", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + }; + + /* Setup protocol subtree array */ + static gint *ett[] = { + &ett_lg8979, + &ett_lg8979_flags, + &ett_lg8979_funccode, + &ett_lg8979_point, + &ett_lg8979_ts, + }; + + module_t *lg8979_module; + + /* Register the protocol name and description */ + proto_lg8979 = proto_register_protocol("Landis & Gyr Telegyr 8979", "L&G 8979", "lg8979"); + + /* Registering protocol to be called by another dissector */ + new_register_dissector("lg8979", dissect_lg8979_simple, proto_lg8979); + + /* Required function calls to register the header fields and subtrees used */ + proto_register_field_array(proto_lg8979, lg8979_hf, array_length(lg8979_hf)); + proto_register_subtree_array(ett, array_length(ett)); + + + /* Register required preferences for L&G 8979 register decoding */ + lg8979_module = prefs_register_protocol(proto_lg8979, proto_reg_handoff_lg8979); + + /* L&G 8979 - Desegmentmentation; defaults to TRUE for TCP desegmentation*/ + prefs_register_bool_preference(lg8979_module, "desegment", + "Desegment all L&G 8979 Protocol packets spanning multiple TCP segments", + "Whether the L&G 8979 dissector should desegment all messages spanning multiple TCP segments", + &lg8979_desegment); + + + /* L&G 8979 Preference - Default TCP Port, allows for "user" port either than 0. */ + prefs_register_uint_preference(lg8979_module, "tcp.port", + "L&G 8979 Protocol Port", + "Set the TCP port for L&G 8979 Protocol packets (if other than the default of 0)", + 10, &global_lg8979_tcp_port); +} + +/******************************************************************************************************/ +/* If this dissector uses sub-dissector registration add a registration routine. + This format is required because a script is used to find these routines and + create the code that calls these routines. + */ +/******************************************************************************************************/ +void +proto_reg_handoff_lg8979(void) +{ + static int lg8979_prefs_initialized = FALSE; + static dissector_handle_t lg8979_handle; + static unsigned int lg8979_port; + + /* Make sure to use L&G 8979 Protocol Preferences field to determine default TCP port */ + if (! lg8979_prefs_initialized) { + lg8979_handle = new_create_dissector_handle(dissect_lg8979_tcp, proto_lg8979); + lg8979_prefs_initialized = TRUE; + } + + if(lg8979_port != 0 && lg8979_port != global_lg8979_tcp_port){ + dissector_delete_uint("tcp.port", lg8979_port, lg8979_handle); + } + + if(global_lg8979_tcp_port != 0 && lg8979_port != global_lg8979_tcp_port) { + dissector_add_uint("tcp.port", global_lg8979_tcp_port, lg8979_handle); + } + + lg8979_port = global_lg8979_tcp_port; + +} + +/* + * Editor modelines - http://www.wireshark.org/tools/modelines.html + * + * Local variables: + * c-basic-offset: 4 + * tab-width: 8 + * indent-tabs-mode: nil + * End: + * + * vi: set shiftwidth=4 tabstop=8 expandtab: + * :indentSize=4:tabSize=8:noTabs=true: + */
\ No newline at end of file diff --git a/epan/dissectors/packet-rtacser.c b/epan/dissectors/packet-rtacser.c index d58e152cae..4a704b2544 100644 --- a/epan/dissectors/packet-rtacser.c +++ b/epan/dissectors/packet-rtacser.c @@ -92,6 +92,7 @@ static dissector_handle_t selfm_handle; static dissector_handle_t dnp3_handle; static dissector_handle_t modbus_handle; static dissector_handle_t synphasor_handle; +static dissector_handle_t lg8979_handle; #define RTACSER_HEADER_LEN 12 @@ -110,6 +111,7 @@ static dissector_handle_t synphasor_handle; #define RTACSER_PAYLOAD_DNP3 2 #define RTACSER_PAYLOAD_MODBUS 3 #define RTACSER_PAYLOAD_SYNPHASOR 4 +#define RTACSER_PAYLOAD_LG8979 5 /* Event Types */ static const value_string rtacser_eventtype_vals[] = { @@ -133,6 +135,7 @@ static const enum_val_t rtacser_payload_proto_type[] = { { "DNP3 ", "DNP3 ", RTACSER_PAYLOAD_DNP3 }, { "MODBUS RTU", "MODBUS RTU", RTACSER_PAYLOAD_MODBUS }, { "SYNPHASOR ", "SYNPHASOR ", RTACSER_PAYLOAD_SYNPHASOR }, + { "L&G 8979 ", "L&G 8979 ", RTACSER_PAYLOAD_LG8979 }, { NULL, NULL, 0 } }; @@ -255,6 +258,10 @@ dissect_rtacser_data(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) payload_tvb = tvb_new_subset_remaining(tvb, RTACSER_HEADER_LEN); call_dissector(synphasor_handle, payload_tvb, pinfo, tree); break; + case RTACSER_PAYLOAD_LG8979: + payload_tvb = tvb_new_subset_remaining(tvb, RTACSER_HEADER_LEN); + call_dissector(lg8979_handle, payload_tvb, pinfo, tree); + break; default: break; } @@ -373,6 +380,7 @@ proto_reg_handoff_rtacser(void) dnp3_handle = find_dissector("dnp3.udp"); modbus_handle = find_dissector("mbrtu"); synphasor_handle = find_dissector("synphasor"); + lg8979_handle = find_dissector("lg8979"); dissector_add_uint("wtap_encap", WTAP_ENCAP_RTAC_SERIAL, rtacser_handle); } |