diff options
Diffstat (limited to 'epan/dissectors/packet-j1939.c')
| -rw-r--r-- | epan/dissectors/packet-j1939.c | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/epan/dissectors/packet-j1939.c b/epan/dissectors/packet-j1939.c new file mode 100644 index 0000000000..f0fdb5a451 --- /dev/null +++ b/epan/dissectors/packet-j1939.c @@ -0,0 +1,321 @@ +/* packet-j1939.c
+ * Routines for dissection of SAE J1939
+ *
+ * Michael Mann
+ * Copyright 2013
+ *
+ * $Id: $
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+#include "config.h"
+
+#include <glib.h>
+#include <epan/packet.h>
+
+#define J1939_CANID_MASK 0x1FFFFFFF
+#define J1939_11BIT_ID 0x000003FF
+
+static int proto_j1939 = -1;
+
+static int hf_j1939_can_id = -1;
+static int hf_j1939_priority = -1;
+static int hf_j1939_pgn = -1;
+static int hf_j1939_data_page = -1;
+static int hf_j1939_extended_data_page = -1;
+static int hf_j1939_pdu_format = -1;
+static int hf_j1939_pdu_specific = -1;
+static int hf_j1939_src_addr = -1;
+static int hf_j1939_dst_addr = -1;
+static int hf_j1939_group_extension = -1;
+static int hf_j1939_data = -1;
+
+static gint ett_j1939 = -1;
+static gint ett_j1939_can = -1;
+static gint ett_j1939_message = -1;
+
+static dissector_table_t subdissector_pgn_table;
+
+static const value_string j1939_address_vals[] = {
+ {0,"Engine #1"},
+ {1,"Engine #2"},
+ {2,"Turbocharger"},
+ {3,"Transmission #1"},
+ {4,"Transmission #2"},
+ {5,"Shift Console - Primary"},
+ {6,"Shift Console - Secondary"},
+ {7,"Power TakeOff - (Main or Rear)"},
+ {8,"Axle - Steering"},
+ {9,"Axle - Drive #1"},
+ {10,"Axle - Drive #2"},
+ {11,"Brakes - System Controller"},
+ {12,"Brakes - Steer Axle"},
+ {13,"Brakes - Drive axle #1"},
+ {14,"Brakes - Drive Axle #2"},
+ {15,"Retarder - Engine"},
+ {16,"Retarder - Driveline"},
+ {17,"Cruise Control"},
+ {18,"Fuel System"},
+ {19,"Steering Controller"},
+ {20,"Suspension - Steer Axle"},
+ {21,"Suspension - Drive Axle #1"},
+ {22,"Suspension - Drive Axle #2"},
+ {23,"Instrument Cluster #1"},
+ {24,"Trip Recorder"},
+ {25,"Passenger-Operator Climate Control #1"},
+ {26,"Alternator/Electrical Charging System"},
+ {27,"Aerodynamic Control"},
+ {28,"Vehicle Navigation"},
+ {29,"Vehicle Security"},
+ {30,"Electrical System"},
+ {31,"Starter System"},
+ {32,"Tractor-Trailer Bridge #1"},
+ {33,"Body Controller"},
+ {34,"Auxiliary Valve Control or Engine Air System Valve Control"},
+ {35,"Hitch Control"},
+ {36,"Power TakeOff (Front or Secondary)"},
+ {37,"Off Vehicle Gateway"},
+ {38,"Virtual Terminal (in cab)"},
+ {39,"Management Computer #1"},
+ {40,"Cab Display #1"},
+ {41,"Retarder, Exhaust, Engine #1"},
+ {42,"Headway Controller"},
+ {43,"On-Board Diagnostic Unit"},
+ {44,"Retarder, Exhaust, Engine #2"},
+ {45,"Endurance Braking System"},
+ {46,"Hydraulic Pump Controller"},
+ {47,"Suspension - System Controller #1"},
+ {48,"Pneumatic - System Controller"},
+ {49,"Cab Controller - Primary"},
+ {50,"Cab Controller - Secondary"},
+ {51,"Tire Pressure Controller"},
+ {52,"Ignition Control Module #1"},
+ {53,"Ignition Control Module #2"},
+ {54,"Seat Control #1"},
+ {55,"Lighting - Operator Controls"},
+ {56,"Rear Axle Steering Controller #1"},
+ {57,"Water Pump Controller"},
+ {58,"Passenger-Operator Climate Control #2"},
+ {59,"Transmission Display - Primary"},
+ {60,"Transmission Display - Secondary"},
+ {61,"Exhaust Emission Controller"},
+ {62,"Vehicle Dynamic Stability Controller"},
+ {63,"Oil Sensor"},
+ {64,"Suspension - System Controller #2"},
+ {65,"Information System Controller #1"},
+ {66,"Ramp Control"},
+ {67,"Clutch/Converter Unit"},
+ {68,"Auxiliary Heater #1"},
+ {69,"Auxiliary Heater #2"},
+ {70,"Engine Valve Controller"},
+ {71,"Chassis Controller #1"},
+ {72,"Chassis Controller #2"},
+ {73,"Propulsion Battery Charger"},
+ {74,"Communications Unit, Cellular"},
+ {75,"Communications Unit, Satellite"},
+ {76,"Communications Unit, Radio"},
+ {77,"Steering Column Unit"},
+ {78,"Fan Drive Controller"},
+ {79,"Seat Control #2"},
+ {80,"Parking brake controller"},
+ {81,"Aftertreatment #1 system gas intake"},
+ {82,"Aftertreatment #1 system gas outlet"},
+ {83,"Safety Restraint System"},
+ {84,"Cab Display #2"},
+ {85,"Diesel Particulate Filter Controller"},
+ {86,"Aftertreatment #2 system gas intake"},
+ {87,"Aftertreatment #2 system gas outlet"},
+ {88,"Safety Restraint System #2"},
+ {89,"Atmospheric Sensor"},
+ {248,"File Server / Printer"},
+ {249,"Off Board Diagnostic-Service Tool #1"},
+ {250,"Off Board Diagnostic-Service Tool #2"},
+ {251,"On-Board Data Logger"},
+ {252,"Reserved for Experimental Use"},
+ {253,"Reserved for OEM"},
+ {254,"Null Address"},
+ {255,"GLOBAL"},
+ { 0, NULL }
+};
+
+value_string_ext j1939_address_vals_ext = VALUE_STRING_EXT_INIT(j1939_address_vals);
+
+static void
+j1939_fmt_address(gchar *result, guint32 address )
+{
+ if ((address < 128) || (address > 247))
+ g_snprintf(result, ITEM_LABEL_LENGTH, "%d (%s)", address, val_to_str_ext_const(address, &j1939_address_vals_ext, "Reserved"));
+ else
+ g_snprintf(result, ITEM_LABEL_LENGTH, "%d (Arbitrary)", address);
+}
+
+struct can_identifier
+{
+ guint32 id;
+};
+
+static int dissect_j1939(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
+{
+ proto_item *ti, *can_id_item;
+ proto_tree *j1939_tree, *can_tree, *msg_tree;
+
+ gint offset = 0;
+ struct can_identifier can_id;
+ guint32 data_length = tvb_reported_length(tvb);
+ guint32 pgn;
+ guint8 *src_addr, *dest_addr;
+
+ DISSECTOR_ASSERT(data);
+ can_id = *((struct can_identifier*)data);
+
+ if (can_id.id & (~J1939_CANID_MASK))
+ {
+ /* Not for us */
+ return 0;
+ }
+
+ col_set_str(pinfo->cinfo, COL_PROTOCOL, "J1939");
+ col_clear(pinfo->cinfo, COL_INFO);
+
+ ti = proto_tree_add_item(tree, proto_j1939, tvb, offset, -1, ENC_NA);
+ j1939_tree = proto_item_add_subtree(ti, ett_j1939);
+
+ ti = proto_tree_add_text(j1939_tree, tvb, 0, 0, "CAN Identifier: 0x%08x", can_id.id);
+ can_tree = proto_item_add_subtree(ti, ett_j1939_can);
+ can_id_item = proto_tree_add_uint(can_tree, hf_j1939_can_id, tvb, 0, 0, can_id.id);
+ PROTO_ITEM_SET_GENERATED(can_id_item);
+
+ ti = proto_tree_add_uint(can_tree, hf_j1939_priority, tvb, 0, 0, can_id.id);
+ PROTO_ITEM_SET_GENERATED(ti);
+ ti = proto_tree_add_uint(can_tree, hf_j1939_pgn, tvb, 0, 0, can_id.id);
+ PROTO_ITEM_SET_GENERATED(ti);
+ ti = proto_tree_add_uint(can_tree, hf_j1939_extended_data_page, tvb, 0, 0, can_id.id);
+ PROTO_ITEM_SET_GENERATED(ti);
+ ti = proto_tree_add_uint(can_tree, hf_j1939_data_page, tvb, 0, 0, can_id.id);
+ PROTO_ITEM_SET_GENERATED(ti);
+ ti = proto_tree_add_uint(can_tree, hf_j1939_pdu_format, tvb, 0, 0, can_id.id);
+ PROTO_ITEM_SET_GENERATED(ti);
+ ti = proto_tree_add_uint(can_tree, hf_j1939_pdu_specific, tvb, 0, 0, can_id.id);
+ PROTO_ITEM_SET_GENERATED(ti);
+ ti = proto_tree_add_uint(can_tree, hf_j1939_src_addr, tvb, 0, 0, can_id.id);
+ PROTO_ITEM_SET_GENERATED(ti);
+
+ /* Set source address */
+ src_addr = (guint8*)wmem_alloc(pinfo->pool, 1);
+ *src_addr = (guint8)(can_id.id & 0xFF);
+ SET_ADDRESS(&pinfo->src, AT_J1939, 1, (const void*)src_addr);
+
+ /* If PF < 240, PS is destination address */
+ if (!(can_id.id & 0x000F00000))
+ {
+ ti = proto_tree_add_uint(can_tree, hf_j1939_dst_addr, tvb, 0, 0, can_id.id);
+ PROTO_ITEM_SET_GENERATED(ti);
+ }
+ else
+ {
+ ti = proto_tree_add_uint(can_tree, hf_j1939_group_extension, tvb, 0, 0, can_id.id);
+ PROTO_ITEM_SET_GENERATED(ti);
+ }
+
+ /* Fill in "destination" address even if its "broadcast" */
+ dest_addr = (guint8*)wmem_alloc(pinfo->pool, 1);
+ *dest_addr = (guint8)((can_id.id & 0xFF00) >> 8);
+ SET_ADDRESS(&pinfo->dst, AT_J1939, 1, (const void*)dest_addr);
+
+ pgn = (can_id.id & 0x3FFFF00) >> 8;
+ col_add_fstr(pinfo->cinfo, COL_INFO, "PGN: %d", pgn);
+
+ /* For now just include raw bytes */
+ col_append_fstr(pinfo->cinfo, COL_INFO, " %s", tvb_bytes_to_str_punct(tvb, 0, data_length, ' '));
+
+
+ ti = proto_tree_add_text(j1939_tree, tvb, 0, -1, "Message");
+ msg_tree = proto_item_add_subtree(ti, ett_j1939_message);
+ if (!dissector_try_uint_new(subdissector_pgn_table, pgn, tvb, pinfo, msg_tree, TRUE, data))
+ {
+ proto_tree_add_item(msg_tree, hf_j1939_data, tvb, 0, -1, ENC_NA);
+ }
+
+ return tvb_length(tvb);
+}
+
+void proto_register_devicenet(void)
+{
+ static hf_register_info hf[] = {
+ { &hf_j1939_can_id,
+ {"CAN Identifier", "j1939.can_id",
+ FT_UINT32, BASE_HEX, NULL, J1939_CANID_MASK, NULL, HFILL }
+ },
+ { &hf_j1939_priority,
+ {"Priority", "j1939.priority",
+ FT_UINT32, BASE_DEC, NULL, 0x1C000000, NULL, HFILL }
+ },
+ { &hf_j1939_pgn,
+ {"PGN", "j1939.pgn",
+ FT_UINT32, BASE_DEC, NULL, 0x03FFFF00, NULL, HFILL }
+ },
+ { &hf_j1939_extended_data_page,
+ {"Extended Data Page", "j1939.ex_data_page",
+ FT_UINT32, BASE_DEC, NULL, 0x02000000, NULL, HFILL }
+ },
+ { &hf_j1939_data_page,
+ {"Data Page", "j1939.data_page",
+ FT_UINT32, BASE_DEC, NULL, 0x01000000, NULL, HFILL }
+ },
+ { &hf_j1939_pdu_format,
+ {"PDU Format", "j1939.pdu_format",
+ FT_UINT32, BASE_DEC, NULL, 0x00FF0000, NULL, HFILL }
+ },
+ { &hf_j1939_pdu_specific,
+ {"PDU Specific", "j1939.pdu_specific",
+ FT_UINT32, BASE_DEC, NULL, 0x0000FF00, NULL, HFILL }
+ },
+ { &hf_j1939_src_addr,
+ {"Source Address", "j1939.src_addr",
+ FT_UINT32, BASE_CUSTOM, j1939_fmt_address, 0x000000FF, NULL, HFILL }
+ },
+ { &hf_j1939_dst_addr,
+ {"Destination Address", "j1939.dst_addr",
+ FT_UINT32, BASE_CUSTOM, j1939_fmt_address, 0x0000FF00, NULL, HFILL }
+ },
+ { &hf_j1939_group_extension,
+ {"Group Extension", "j1939.group_extension",
+ FT_UINT32, BASE_DEC, NULL, 0x0000FF00, NULL, HFILL }
+ },
+ { &hf_j1939_data,
+ {"Data", "j1939.data",
+ FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }
+ },
+ };
+
+ static gint *ett[] = {
+ &ett_j1939,
+ &ett_j1939_can,
+ &ett_j1939_message
+ };
+
+ proto_j1939 = proto_register_protocol("SAE J1939", "J1939", "j1939");
+
+ proto_register_field_array(proto_j1939, hf, array_length(hf));
+ proto_register_subtree_array(ett, array_length(ett));
+
+ new_register_dissector("j1939", dissect_j1939, proto_j1939);
+
+ subdissector_pgn_table = register_dissector_table("j1939.pgn", "PGN Handle", FT_UINT32, BASE_DEC);
+}
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