| #!/usr/bin/env python3 |
| # |
| # Copyright 2020 - The Android Open Source Project |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| from google.protobuf import empty_pb2 as empty_proto |
| from cert.event_stream import EventStream |
| from cert.event_stream import FilteringEventStream |
| from cert.event_stream import IEventStream |
| from cert.closable import Closable |
| from cert.closable import safeClose |
| from cert.captures import HciCaptures |
| from bluetooth_packets_python3 import hci_packets |
| from cert.truth import assertThat |
| from hci.facade import hci_facade_pb2 as hci_facade |
| from facade import common_pb2 as common |
| from cert.matchers import HciMatchers |
| from bluetooth_packets_python3.hci_packets import FilterDuplicates |
| from bluetooth_packets_python3.hci_packets import LeSetExtendedAdvertisingLegacyParametersBuilder |
| from bluetooth_packets_python3.hci_packets import LegacyAdvertisingProperties |
| from bluetooth_packets_python3.hci_packets import PeerAddressType |
| from bluetooth_packets_python3.hci_packets import AdvertisingFilterPolicy |
| from bluetooth_packets_python3.hci_packets import LeSetExtendedAdvertisingRandomAddressBuilder |
| from bluetooth_packets_python3.hci_packets import GapData |
| from bluetooth_packets_python3.hci_packets import GapDataType |
| from bluetooth_packets_python3.hci_packets import LeSetExtendedAdvertisingDataBuilder |
| from bluetooth_packets_python3.hci_packets import Operation |
| from bluetooth_packets_python3.hci_packets import OwnAddressType |
| from bluetooth_packets_python3.hci_packets import LeScanningFilterPolicy |
| from bluetooth_packets_python3.hci_packets import Enable |
| from bluetooth_packets_python3.hci_packets import FragmentPreference |
| from bluetooth_packets_python3.hci_packets import LeSetExtendedAdvertisingScanResponseBuilder |
| from bluetooth_packets_python3.hci_packets import LeSetExtendedAdvertisingEnableBuilder |
| from bluetooth_packets_python3.hci_packets import LeSetExtendedScanEnableBuilder |
| from bluetooth_packets_python3.hci_packets import EnabledSet |
| from bluetooth_packets_python3.hci_packets import OpCode |
| from bluetooth_packets_python3.hci_packets import AclBuilder |
| from bluetooth_packets_python3 import RawBuilder |
| |
| |
| class PyHciAclConnection(IEventStream): |
| |
| def __init__(self, handle, acl_stream, device): |
| self.handle = int(handle) |
| self.device = device |
| # todo, handle we got is 0, so doesn't match - fix before enabling filtering |
| self.our_acl_stream = FilteringEventStream(acl_stream, None) |
| |
| def send(self, pb_flag, b_flag, data): |
| acl = AclBuilder(self.handle, pb_flag, b_flag, RawBuilder(data)) |
| self.device.hci.SendAcl(common.Data(payload=bytes(acl.Serialize()))) |
| |
| def send_first(self, data): |
| self.send(hci_packets.PacketBoundaryFlag.FIRST_AUTOMATICALLY_FLUSHABLE, |
| hci_packets.BroadcastFlag.POINT_TO_POINT, bytes(data)) |
| |
| def send_continuing(self, data): |
| self.send(hci_packets.PacketBoundaryFlag.CONTINUING_FRAGMENT, hci_packets.BroadcastFlag.POINT_TO_POINT, |
| bytes(data)) |
| |
| def get_event_queue(self): |
| return self.our_acl_stream.get_event_queue() |
| |
| |
| class PyHciAdvertisement(object): |
| |
| def __init__(self, handle, py_hci): |
| self.handle = handle |
| self.py_hci = py_hci |
| |
| def set_data(self, complete_name): |
| data = GapData() |
| data.data_type = GapDataType.COMPLETE_LOCAL_NAME |
| data.data = list(bytes(complete_name)) |
| self.py_hci.send_command( |
| LeSetExtendedAdvertisingDataBuilder(self.handle, Operation.COMPLETE_ADVERTISEMENT, |
| FragmentPreference.CONTROLLER_SHOULD_NOT, [data])) |
| |
| def set_scan_response(self, shortened_name): |
| data = GapData() |
| data.data_type = GapDataType.SHORTENED_LOCAL_NAME |
| data.data = list(bytes(shortened_name)) |
| self.py_hci.send_command( |
| LeSetExtendedAdvertisingScanResponseBuilder(self.handle, Operation.COMPLETE_ADVERTISEMENT, |
| FragmentPreference.CONTROLLER_SHOULD_NOT, [data])) |
| |
| def start(self): |
| enabled_set = EnabledSet() |
| enabled_set.advertising_handle = self.handle |
| enabled_set.duration = 0 |
| enabled_set.max_extended_advertising_events = 0 |
| self.py_hci.send_command(LeSetExtendedAdvertisingEnableBuilder(Enable.ENABLED, [enabled_set])) |
| assertThat(self.py_hci.get_event_stream()).emits( |
| HciMatchers.CommandComplete(OpCode.LE_SET_EXTENDED_ADVERTISING_ENABLE)) |
| |
| |
| class PyHci(Closable): |
| |
| event_stream = None |
| le_event_stream = None |
| acl_stream = None |
| |
| def __init__(self, device, acl_streaming=False): |
| """ |
| If you are planning on personally using the ACL data stream |
| coming from HCI, specify acl_streaming=True. You probably only |
| want this if you are testing HCI itself. |
| """ |
| self.device = device |
| self.event_stream = EventStream(self.device.hci.StreamEvents(empty_proto.Empty())) |
| self.le_event_stream = EventStream(self.device.hci.StreamLeSubevents(empty_proto.Empty())) |
| if acl_streaming: |
| self.register_for_events(hci_packets.EventCode.ROLE_CHANGE, hci_packets.EventCode.CONNECTION_REQUEST, |
| hci_packets.EventCode.CONNECTION_COMPLETE, |
| hci_packets.EventCode.CONNECTION_PACKET_TYPE_CHANGED) |
| self.acl_stream = EventStream(self.device.hci.StreamAcl(empty_proto.Empty())) |
| |
| def close(self): |
| safeClose(self.event_stream) |
| safeClose(self.le_event_stream) |
| safeClose(self.acl_stream) |
| |
| def get_event_stream(self): |
| return self.event_stream |
| |
| def get_le_event_stream(self): |
| return self.le_event_stream |
| |
| def get_raw_acl_stream(self): |
| if self.acl_stream is None: |
| raise Exception("Please construct '%s' with acl_streaming=True!" % self.__class__.__name__) |
| return self.acl_stream |
| |
| def register_for_events(self, *event_codes): |
| for event_code in event_codes: |
| self.device.hci.RequestEvent(hci_facade.EventRequest(code=int(event_code))) |
| |
| def register_for_le_events(self, *event_codes): |
| for event_code in event_codes: |
| self.device.hci.RequestLeSubevent(hci_facade.EventRequest(code=int(event_code))) |
| |
| def send_command(self, command): |
| self.device.hci.SendCommand(common.Data(payload=bytes(command.Serialize()))) |
| |
| def enable_inquiry_and_page_scan(self): |
| self.send_command(hci_packets.WriteScanEnableBuilder(hci_packets.ScanEnable.INQUIRY_AND_PAGE_SCAN)) |
| |
| def read_own_address(self): |
| self.send_command(hci_packets.ReadBdAddrBuilder()) |
| read_bd_addr = HciCaptures.ReadBdAddrCompleteCapture() |
| assertThat(self.event_stream).emits(read_bd_addr) |
| return read_bd_addr.get().GetBdAddr() |
| |
| def initiate_connection(self, remote_addr): |
| self.send_command( |
| hci_packets.CreateConnectionBuilder( |
| remote_addr if isinstance(remote_addr, str) else remote_addr.decode('utf-8'), |
| 0xcc18, # Packet Type |
| hci_packets.PageScanRepetitionMode.R1, |
| 0x0, |
| hci_packets.ClockOffsetValid.INVALID, |
| hci_packets.CreateConnectionRoleSwitch.ALLOW_ROLE_SWITCH)) |
| |
| def accept_connection(self): |
| connection_request = HciCaptures.ConnectionRequestCapture() |
| assertThat(self.event_stream).emits(connection_request) |
| |
| self.send_command( |
| hci_packets.AcceptConnectionRequestBuilder(connection_request.get().GetBdAddr(), |
| hci_packets.AcceptConnectionRequestRole.REMAIN_PERIPHERAL)) |
| return self.complete_connection() |
| |
| def complete_connection(self): |
| connection_complete = HciCaptures.ConnectionCompleteCapture() |
| assertThat(self.event_stream).emits(connection_complete) |
| |
| handle = connection_complete.get().GetConnectionHandle() |
| if self.acl_stream is None: |
| raise Exception("Please construct '%s' with acl_streaming=True!" % self.__class__.__name__) |
| return PyHciAclConnection(handle, self.acl_stream, self.device) |
| |
| def create_advertisement(self, |
| handle, |
| own_address, |
| properties=LegacyAdvertisingProperties.ADV_IND, |
| min_interval=400, |
| max_interval=450, |
| channel_map=7, |
| own_address_type=OwnAddressType.RANDOM_DEVICE_ADDRESS, |
| peer_address_type=PeerAddressType.PUBLIC_DEVICE_OR_IDENTITY_ADDRESS, |
| peer_address='00:00:00:00:00:00', |
| filter_policy=AdvertisingFilterPolicy.ALL_DEVICES, |
| tx_power=0xF8, |
| sid=1, |
| scan_request_notification=Enable.DISABLED): |
| |
| self.send_command( |
| LeSetExtendedAdvertisingLegacyParametersBuilder(handle, properties, min_interval, max_interval, channel_map, |
| own_address_type, peer_address_type, peer_address, |
| filter_policy, tx_power, sid, scan_request_notification)) |
| |
| self.send_command(LeSetExtendedAdvertisingRandomAddressBuilder(handle, own_address)) |
| return PyHciAdvertisement(handle, self) |