tools: add the parse_log script we used to dump the raw btsnoop logs
Better keep this in a public place where it won't vanish from our disks. Note that this is a python 2 script (because btsnoop), and it should not be part of the installation, ever.
This commit is contained in:
Benjamin Tissoires
Peter Hutterer
parent
31e1f2ad3b
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0c829754cd
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#!/usr/bin/env python
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# This Python 2 program allows to translate btsnoop capture files to
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# raw data coming from the various endpoints.
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#
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# You need to retrieve a btsnoop capture file from Android:
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# * Set up your device you want to snoop with your Android phone
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# * Install some Android file manager
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# * Enable developer mode on your Android device
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# * In Settings - General - Developer Options, enable "Bluetooth HCI snoop
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# log". This will log all bluetooth traffic to a file
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# `/Android/data/btsnoop_hci.log` (the location may differ, search for it)
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# * Use the app to produce some bluetooth data you want to capture
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# * disable bluetooth snooping
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# * Copy the `btsnoop_hci.log` file into `Downloads`, connect the Android
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# device to a computer and download the file. Or mail it to yourself. Or
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# whatever other way you find to get that file onto your computer.
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from __future__ import print_function
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import sys
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import binascii
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# https://github.com/joekickass/python-btsnoop
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import btsnoop.btsnoop.btsnoop as btsnoop
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import btsnoop.bt.hci_uart as hci_uart
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import btsnoop.bt.hci_acl as hci_acl
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import btsnoop.bt.l2cap as l2cap
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import btsnoop.bt.att as att
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NORDIC_UART_SERVICE_UUID = '6e400001-b5a3-f393-e0a9-e50e24dcca9e'
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NORDIC_UART_CHRC_TX_UUID = '6e400002-b5a3-f393-e0a9-e50e24dcca9e'
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NORDIC_UART_CHRC_RX_UUID = '6e400003-b5a3-f393-e0a9-e50e24dcca9e'
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WACOM_LIVE_SERVICE_UUID = '00001523-1212-efde-1523-785feabcd123'
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WACOM_CHRC_LIVE_PEN_DATA_UUID = '00001524-1212-efde-1523-785feabcd123'
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WACOM_OFFLINE_SERVICE_UUID = 'ffee0001-bbaa-9988-7766-554433221100'
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WACOM_OFFLINE_FW_DATA_UUID = 'ffee0002-bbaa-9988-7766-554433221100'
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WACOM_OFFLINE_CHRC_PEN_DATA_UUID = 'ffee0003-bbaa-9988-7766-554433221100'
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MYSTERIOUS_NOTIFICATION_SERVICE_UUID = '3a340720-c572-11e5-86c5-0002a5d5c51b'
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MYSTERIOUS_NOTIFICATION_CHRC_UUID = '3a340721-c572-11e5-86c5-0002a5d5c51b'
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# http://developer.nordicsemi.com/nRF51_SDK/nRF51_SDK_v7.x.x/doc/7.2.0/s110/html/a00071.html#ota_spec_sec
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NORDIC_DFU_SERVICE_UUID = '00001530-1212-efde-1523-785feabcd123'
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NORDIC_DFU_CTL_POINT_CHRC_UUID = '00001531-1212-efde-1523-785feabcd123'
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NORDIC_DFU_PACKET_CHRC_UUID = '00001532-1212-efde-1523-785feabcd123'
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NORDIC_DFU_UNKNONWN_CHRC_UUID = '00001534-1212-efde-1523-785feabcd123'
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desc_uuids = {
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NORDIC_UART_SERVICE_UUID: 'NORDIC_UART_SERVICE_UUID',
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NORDIC_UART_CHRC_TX_UUID: 'Nordic UART TX -->',
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NORDIC_UART_CHRC_RX_UUID: 'Nordic UART RX <--',
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NORDIC_DFU_SERVICE_UUID: 'NORDIC_DFU_SERVICE_UUID',
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NORDIC_DFU_CTL_POINT_CHRC_UUID: 'Nordic DFU Ctl Point',
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NORDIC_DFU_PACKET_CHRC_UUID: 'Nordic DFU packet',
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NORDIC_DFU_UNKNONWN_CHRC_UUID: 'Nordic DFU Unknown',
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WACOM_LIVE_SERVICE_UUID: 'WACOM_LIVE_SERVICE_UUID',
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WACOM_CHRC_LIVE_PEN_DATA_UUID: 'Wacom Live <----',
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WACOM_OFFLINE_SERVICE_UUID: 'WACOM_OFFLINE_SERVICE_UUID',
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WACOM_OFFLINE_FW_DATA_UUID: 'Sending FW Data --->',
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WACOM_OFFLINE_CHRC_PEN_DATA_UUID: 'Wacom RX <----',
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MYSTERIOUS_NOTIFICATION_SERVICE_UUID: 'MYSTERIOUS_NOTIFICATION_SERVICE_UUID',
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MYSTERIOUS_NOTIFICATION_CHRC_UUID: 'Mysterious Notification',
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}
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handles = {}
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def att_data_to_uuid(data):
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# reverse the string
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data = data[::-1]
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uuid = binascii.hexlify(data[:4]) + '-' + \
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binascii.hexlify(data[4:6]) + '-' + \
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binascii.hexlify(data[6:8]) + '-' + \
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binascii.hexlify(data[8:10]) + '-' + \
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binascii.hexlify(data[10:])
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return uuid
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def get_rows(records):
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rows = []
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for record in records:
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seq_nbr = record[0]
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# time = record[3].strftime("%b-%d %H:%M:%S.%f")
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hci_pkt_type, hci_pkt_data = hci_uart.parse(record[4])
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# hci = hci_uart.type_to_str(hci_pkt_type)
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if hci_pkt_type != hci_uart.ACL_DATA:
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continue
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hci_data = hci_acl.parse(hci_pkt_data)
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l2cap_length, l2cap_cid, l2cap_data = l2cap.parse(hci_data[2], hci_data[4])
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if l2cap_cid != l2cap.L2CAP_CID_ATT:
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continue
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att_opcode, att_data = att.parse(l2cap_data)
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# cmd_evt_l2cap = att.opcode_to_str(att_opcode)
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data = att_data
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if att_opcode == 0x11:
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length = ord(data[0])
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if length == 20:
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start = binascii.hexlify(data[1:3])
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end = binascii.hexlify(data[3:5])
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print('{:>6} service handle from {} to {}: {} '.format(seq_nbr, start, end, att_data_to_uuid(data[5:])))
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continue
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elif att_opcode == 0x09:
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length = ord(data[0])
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if length == 21:
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value_handle = binascii.hexlify(data[4:6])
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uuid = att_data_to_uuid(data[6:])
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desc_uuid = uuid
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try:
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desc_uuid = desc_uuids[uuid]
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except KeyError:
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pass
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print('{:>6} chrc at handle {}: {}'.format(seq_nbr, value_handle, uuid))
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handles[value_handle] = (uuid, desc_uuid)
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continue
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if att_opcode not in [0x52, 0x1b]:
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continue
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data = binascii.hexlify(data)
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handle = data[:4]
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if handle not in handles:
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continue
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rows.append(['{:>6}'.format(seq_nbr), handles[handle][1], data[4:]])
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return rows
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def main(filename):
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records = btsnoop.parse(filename)
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rows = get_rows(records)
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for r in rows:
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print(' '.join(r))
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if __name__ == "__main__":
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if len(sys.argv) == 2:
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main(sys.argv[1])
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else:
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sys.exit(-1)
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