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authorcbontje <cbontje@gmail.com>2014-03-11 15:46:27 -0600
committerAnders Broman <a.broman58@gmail.com>2014-03-19 05:07:34 +0000
commitfff998d6c1c7d38f3929eaa6e5101683c071744a (patch)
tree93491b6ba28cb6ca6364509a1ceebcda3e3b82c5 /epan/dissectors/packet-lg8979.c
parent04d950130624c14ac8af39c621f69851d8088ed6 (diff)
New Dissector for Landis & Gyr (Telegyr) 8979
Commit includes dissector code for lg8979 as well as additions to RTAC Serial code to call dissector when required. See bug report 9874 for further details and sample pcap files UPDATE1: L&G 8979 commit for addressing comments from Anders and Alexis and added Cmakelists.txt UPDATE2: address further comments from Alexis re. proto_item_set_text / proto_item_add_text entries. Also add modelines UPDATE3: fix compilation error noted by Alexis UPDATE4: address proto_tree_add_* comments from Michael Change-Id: I6e69d2b7b7e91e6efa12e4a5fb7dbd140c0540ed Reviewed-on: https://code.wireshark.org/review/610 Reviewed-by: Michael Mann <mmann78@netscape.net>
Diffstat (limited to 'epan/dissectors/packet-lg8979.c')
-rw-r--r--epan/dissectors/packet-lg8979.c1563
1 files changed, 1563 insertions, 0 deletions
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
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-05 14:30:40 +0000