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139 lines
5.7 KiB
139 lines
5.7 KiB
#!/usr/bin/env python3
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#
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# Copyright 2020 - The Android Open Source Project
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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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# http://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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from google.protobuf import empty_pb2 as empty_proto
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from cert.event_stream import EventStream
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from cert.event_stream import IEventStream
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from cert.captures import HciCaptures
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from cert.closable import Closable
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from cert.closable import safeClose
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from bluetooth_packets_python3 import hci_packets
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from cert.truth import assertThat
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from hci.facade import le_acl_manager_facade_pb2 as le_acl_manager_facade
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class PyLeAclManagerAclConnection(IEventStream, Closable):
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def __init__(self, le_acl_manager, address, remote_addr, handle, event_stream):
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"""
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An abstract representation for an LE ACL connection in GD certification test
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:param le_acl_manager: The LeAclManager from this GD device
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:param address: The local device address
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:param remote_addr: Remote device address
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:param handle: Connection handle
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:param event_stream: The connection event stream for this connection
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"""
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self.le_acl_manager = le_acl_manager
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# todo enable filtering after sorting out handles
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# self.our_acl_stream = FilteringEventStream(acl_stream, None)
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self.handle = handle
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self.connection_event_stream = event_stream
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self.acl_stream = EventStream(
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self.le_acl_manager.FetchAclData(le_acl_manager_facade.LeHandleMsg(handle=self.handle)))
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self.remote_address = remote_addr
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self.own_address = address
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self.disconnect_reason = None
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def close(self):
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safeClose(self.connection_event_stream)
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safeClose(self.acl_stream)
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def wait_for_disconnection_complete(self):
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disconnection_complete = HciCaptures.DisconnectionCompleteCapture()
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assertThat(self.connection_event_stream).emits(disconnection_complete)
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self.disconnect_reason = disconnection_complete.get().GetReason()
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def send(self, data):
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self.le_acl_manager.SendAclData(le_acl_manager_facade.LeAclData(handle=self.handle, payload=bytes(data)))
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def get_event_queue(self):
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return self.acl_stream.get_event_queue()
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class PyLeAclManager(Closable):
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def __init__(self, device):
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"""
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LE ACL Manager for GD Certification test
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:param device: The GD device
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"""
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self.le_acl_manager = device.hci_le_acl_manager
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self.incoming_connection_event_stream = None
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self.outgoing_connection_event_streams = {}
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self.active_connections = []
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self.next_token = 1
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def close(self):
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safeClose(self.incoming_connection_event_stream)
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for v in self.outgoing_connection_event_streams.values():
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safeClose(v[0])
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for connection in self.active_connections:
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safeClose(connection)
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def listen_for_incoming_connections(self):
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assertThat(self.incoming_connection_event_stream).isNone()
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self.incoming_connection_event_stream = EventStream(
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self.le_acl_manager.FetchIncomingConnection(empty_proto.Empty()))
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def connect_to_remote(self, remote_addr):
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token = self.initiate_connection(remote_addr)
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return self.complete_outgoing_connection(token)
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def wait_for_connection(self):
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self.listen_for_incoming_connections()
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return self.complete_incoming_connection()
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def cancel_connection(self, token):
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assertThat(token in self.outgoing_connection_event_streams).isTrue()
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pair = self.outgoing_connection_event_streams.pop(token)
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safeClose(pair[0])
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self.le_acl_manager.CancelConnection(pair[1])
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def initiate_connection(self, remote_addr):
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assertThat(self.next_token in self.outgoing_connection_event_streams).isFalse()
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self.outgoing_connection_event_streams[self.next_token] = EventStream(
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self.le_acl_manager.CreateConnection(remote_addr)), remote_addr
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token = self.next_token
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self.next_token += 1
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return token
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def complete_connection(self, event_stream):
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connection_complete = HciCaptures.LeConnectionCompleteCapture()
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assertThat(event_stream).emits(connection_complete)
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complete = connection_complete.get()
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handle = complete.GetConnectionHandle()
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remote = complete.GetPeerAddress()
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if complete.GetSubeventCode() == hci_packets.SubeventCode.ENHANCED_CONNECTION_COMPLETE:
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address = complete.GetLocalResolvablePrivateAddress()
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else:
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address = None
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connection = PyLeAclManagerAclConnection(self.le_acl_manager, address, remote, handle, event_stream)
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self.active_connections.append(connection)
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return connection
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def complete_incoming_connection(self):
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assertThat(self.incoming_connection_event_stream).isNotNone()
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event_stream = self.incoming_connection_event_stream
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self.incoming_connection_event_stream = None
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return self.complete_connection(event_stream)
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def complete_outgoing_connection(self, token):
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assertThat(self.outgoing_connection_event_streams[token]).isNotNone()
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event_stream = self.outgoing_connection_event_streams.pop(token)[0]
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return self.complete_connection(event_stream)
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