109 lines
4.0 KiB
Python
109 lines
4.0 KiB
Python
# Copyright 2021-2022 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# -----------------------------------------------------------------------------
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# Imports
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# -----------------------------------------------------------------------------
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import asyncio
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import os
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import logging
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import click
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from colors import color
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from bumble.core import ProtocolError, TimeoutError
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from bumble.device import Device, Peer
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from bumble.gatt import show_services
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from bumble.transport import open_transport_or_link
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# -----------------------------------------------------------------------------
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async def dump_gatt_db(peer, done):
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# Discover all services
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print(color('### Discovering Services and Characteristics', 'magenta'))
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await peer.discover_services()
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for service in peer.services:
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await service.discover_characteristics()
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for characteristic in service.characteristics:
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await characteristic.discover_descriptors()
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print(color('=== Services ===', 'yellow'))
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show_services(peer.services)
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print()
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# Discover all attributes
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print(color('=== All Attributes ===', 'yellow'))
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attributes = await peer.discover_attributes()
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for attribute in attributes:
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print(attribute)
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try:
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value = await attribute.read_value()
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print(color(f'{value.hex()}', 'green'))
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except ProtocolError as error:
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print(color(error, 'red'))
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except TimeoutError:
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print(color('read timeout', 'red'))
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if done is not None:
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done.set_result(None)
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# -----------------------------------------------------------------------------
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async def async_main(device_config, encrypt, transport, address_or_name):
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async with await open_transport_or_link(transport) as (hci_source, hci_sink):
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# Create a device
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if device_config:
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device = Device.from_config_file_with_hci(device_config, hci_source, hci_sink)
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else:
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device = Device.with_hci('Bumble', 'F0:F1:F2:F3:F4:F5', hci_source, hci_sink)
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await device.power_on()
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if address_or_name:
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# Connect to the target peer
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connection = await device.connect(address_or_name)
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# Encrypt the connection if required
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if encrypt:
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await connection.encrypt()
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await dump_gatt_db(Peer(connection), None)
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else:
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# Wait for a connection
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done = asyncio.get_running_loop().create_future()
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device.on('connection', lambda connection: asyncio.create_task(dump_gatt_db(Peer(connection), done)))
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await device.start_advertising(auto_restart=True)
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print(color('### Waiting for connection...', 'blue'))
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await done
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# -----------------------------------------------------------------------------
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@click.command()
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@click.option('--device-config', help='Device configuration', type=click.Path())
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@click.option('--encrypt', help='Encrypt the connection', is_flag=True, default=False)
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@click.argument('transport')
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@click.argument('address-or-name', required=False)
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def main(device_config, encrypt, transport, address_or_name):
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"""
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Dump the GATT database on a remote device. If ADDRESS_OR_NAME is not specified,
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wait for an incoming connection.
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"""
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logging.basicConfig(level = os.environ.get('BUMBLE_LOGLEVEL', 'INFO').upper())
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asyncio.run(async_main(device_config, encrypt, transport, address_or_name))
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# -----------------------------------------------------------------------------
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if __name__ == '__main__':
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main()
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