def inquiry(self, inquiry_len=0x08):
logger.info('BR scanning on ' + blue("hci%d"%self.devid) + \
' with timeout ' + blue("%.2f sec\n"%(inquiry_len*1.28))+'\n')
self.scanned_dev = []
self.remote_name_req_flag = True
hci = HCI(self.iface)
def inquiry_result_handler(result: bytes):
event_code = result[0]
logger.debug("Entered inquiry(), inquiry_result_handler()\n"
"{}".format(HciEventCodes[event_code].name))
if event_code == HCI_Inquiry_Result.evt_code:
self.pp_inquiry_result(result[2:])
elif event_code == HCI_Inquiry_Result_with_RSSI.evt_code:
self.pp_inquiry_result_with_rssi(result[2:])
elif event_code == HCI_Extended_Inquiry_Result.evt_code:
self.pp_extended_inquiry_result(result[2:])
else:
logger.warning('Unknow inquiry result: {}'.format(result))
try:
hci.inquiry(inquiry_len=inquiry_len,
inquiry_result_handler=inquiry_result_handler)
logger.info('Inquiry completed\n')
if self.remote_name_req_flag and len(self.scanned_dev) != 0:
logger.info('Requesting the name of the scanned devices...')
for bd_addr in self.scanned_dev:
try:
name = hci.remote_name_request({
'BD_ADDR':
bytes.fromhex(bd_addr.replace(':', '')),
'Page_Scan_Repetition_Mode':
0x01,
'Reserved':
0x00,
'Clock_Offset':
0x0000
})['Remote_Name'].decode().strip()
except Exception as e:
print(e)
name = ''
print(bd_addr + ':', blue(name))
except HciRuntimeError as e:
logger.error("{}".format(e))
except KeyboardInterrupt as e:
logger.info('BR/EDR devices scan canceled\n')
hci.inquiry_cancel()
hci.close()
def init_hci(iface: str = 'hci0'):
# hciconfig <hci> up 的前提是 rfkill 先 unblock
subprocess.check_output('rfkill unblock %d' % find_rfkill_devid(iface),
stderr=STDOUT,
timeout=5,
shell=True)
subprocess.check_output('hciconfig {} up'.format(iface),
stderr=STDOUT,
timeout=5,
shell=True)
subprocess.check_output('systemctl restart bluetooth.service',
stderr=STDOUT,
timeout=5,
shell=True)
hci = HCI(iface)
# 下面在发送各种 HCI command 时，如果出现如下异常：
# BlockingIOError: [Errno 11] Resource temporarily unavailable
# 那么可能是 hci socket 被设为了 non-blocking mode。
hci.inquiry_cancel()
hci.exit_periodic_inquiry_mode()
hci.write_scan_enable() # No scan enabled
event_params = hci.le_set_advertising_enable() # Advertising is disabled
if event_params['Status'] != 0x00:
#print(WARNING, 'Status of HCI_LE_Set_Advertising_Enable command: 0x%02x'%event_params['Status'])
pass
try:
hci.le_set_scan_enable({
'LE_Scan_Enable': 0x00, # Scanning disabled
'Filter_Duplicates': 0x01 # Ignored
})
except RuntimeError as e:
#print(WARNING, e)
pass
hci.set_event_filter({'Filter_Type': 0x00}) # Clear All Filters
event_params = hci.read_bdaddr()
if event_params['Status'] != 0:
raise RuntimeError
else:
local_bd_addr = event_params['BD_ADDR'].upper()
# Clear bluetoothd cache
cache_path = PosixPath('/var/lib/bluetooth/') / local_bd_addr / 'cache'
if cache_path.exists():
for file in cache_path.iterdir():
os.remove(file)
hci.close()