| usb_simtrace_protocol = Proto("USB_simtrace", "USB simtrace protocol") |
| |
| |
| local control_commands = { |
| -- /* SIMTRACE_MSGC_GENERIC */ |
| [0x0000] = "SIMTRACE_CMD_DO_ERROR", |
| [0x0001] = "SIMTRACE_CMD_BD_BOARD_INFO", |
| |
| -- /* SIMTRACE_MSGC_CARDEM */ |
| [0x0101] = "SIMTRACE_MSGT_DT_CEMU_TX_DATA", |
| [0x0102] = "SIMTRACE_MSGT_DT_CEMU_SET_ATR", |
| [0x0103] = "SIMTRACE_MSGT_BD_CEMU_STATS", |
| [0x0104] = "SIMTRACE_MSGT_BD_CEMU_STATUS", |
| [0x0105] = "SIMTRACE_MSGT_DT_CEMU_CARDINSERT", |
| [0x0106] = "SIMTRACE_MSGT_DO_CEMU_RX_DATA", |
| [0x0107] = "SIMTRACE_MSGT_DO_CEMU_PTS", |
| [0x0108] = "SIMTRACE_MSGT_BD_CEMU_CONFIG", |
| |
| -- /* SIMTRACE_MSGC_MODEM */ |
| [0x0201] = "SIMTRACE_MSGT_DT_MODEM_RESET", |
| [0x0202] = "SIMTRACE_MSGT_DT_MODEM_SIM_SELECT", |
| [0x0203] = "SIMTRACE_MSGT_BD_MODEM_STATUS", |
| |
| -- /* SIMTRACE_MSGC_SNIFF */ |
| [0x0300] = "SIMTRACE_MSGT_SNIFF_CHANGE", |
| [0x0301] = "SIMTRACE_MSGT_SNIFF_FIDI", |
| [0x0302] = "SIMTRACE_MSGT_SNIFF_ATR", |
| [0x0304] = "SIMTRACE_MSGT_SNIFF_TPDU", |
| [0x0303] = "SIMTRACE_MSGT_SNIFF_PPS" |
| } |
| |
| local msgtype = ProtoField.uint16("usb_simtrace.msgtype", "Message Type", base.HEX_DEC, control_commands) |
| local seqnr = ProtoField.uint8("usb_simtrace.seqnr", "Sequence Number", base.HEX_DEC) |
| local slotnr = ProtoField.uint8("usb_simtrace.slotnr", "Slot Number", base.HEX_DEC) |
| local reserved = ProtoField.uint16("usb_simtrace.reserved", "reserved", base.HEX_DEC) |
| local payloadlen = ProtoField.uint16("usb_simtrace.length", "length", base.HEX_DEC) |
| local payload = ProtoField.bytes("usb_simtrace.payload", "Data") |
| |
| local pb_and_rx = ProtoField.uint32("usb_simtrace.pb_and_rx", "pb_and_rx", base.HEX_DEC, NULL, 0x8) |
| local pb_and_tx = ProtoField.uint32("usb_simtrace.pb_and_tx", "pb_and_tx", base.HEX_DEC, NULL, 0x4) |
| local final = ProtoField.uint32("usb_simtrace.final", "final", base.HEX_DEC, NULL, 0x2) |
| local tpdu_hdr = ProtoField.uint32("usb_simtrace.tpdu_hdr", "tpdu_hdr", base.HEX_DEC, NULL, 0x1) |
| local rxtxdatalen = ProtoField.uint16("usb_simtrace.rxtxdatalen", "rx/tx data length", base.HEX_DEC) |
| local rxtxdata = ProtoField.bytes("usb_simtrace.rxtxdata", "rx/tx (data)") |
| usb_simtrace_protocol.fields = { |
| msgtype, seqnr, slotnr, reserved, payloadlen, payload, pb_and_rx, pb_and_tx, final, tpdu_hdr, rxtxdatalen, rxtxdata |
| } |
| function dissect_rxtx(payload_data,pinfo,tree) |
| |
| local headerSubtree = tree:add(usb_simtrace_protocol, payload_data, "rx/tx data") |
| local len = payload_data(8+4,2):le_uint(); |
| local cmd32 = payload_data(8+0,4):le_uint(); |
| |
| headerSubtree:add(pb_and_rx, cmd32) |
| headerSubtree:add(pb_and_tx, cmd32) |
| headerSubtree:add(final, cmd32) |
| headerSubtree:add(tpdu_hdr, cmd32) |
| |
| headerSubtree:add(rxtxdatalen, len) |
| headerSubtree:add_le(rxtxdata, payload_data(8+6,len)) |
| end |
| |
| function usb_simtrace_protocol.dissector(buffer, pinfo, tree) |
| length = buffer:len() |
| if length == 0 then return end |
| |
| pinfo.cols.protocol = usb_simtrace_protocol.name |
| |
| local subtree = tree:add(usb_simtrace_protocol, buffer(), "USB simtrace Data") |
| local command = buffer(0,2):uint() |
| |
| subtree:add(msgtype, command):set_generated() |
| subtree:add(seqnr, buffer(2,1)) |
| subtree:add(slotnr, buffer(3,1)) |
| subtree:add_le(payloadlen, buffer(6,2)) |
| pinfo.cols.info = string.format("Cmd 0x%04X : %s", command, control_commands[command]) |
| local payload_data = buffer(8,length-8) |
| if(command == 0x0101 or command == 0x0106) then |
| return dissect_rxtx(buffer(),pinfo,subtree) |
| else |
| subtree:add(payload, payload_data) |
| end |
| |
| end |
| |
| |
| function usb_simtrace_protocol.init() |
| local usb_product_dissectors = DissectorTable.get("usb.product") |
| usb_product_dissectors:add(0x1d50616d, usb_simtrace_protocol) |
| usb_product_dissectors:add(0x1d50616e, usb_simtrace_protocol) |
| DissectorTable.get("usb.bulk"):add(0xffff, usb_simtrace_protocol) |
| end |