blob: 9b7e8c5077242f41920ac6d8869aaa03432045a4 [file] [log] [blame]
#
# Copyright (c) 2023 Project CHIP Authors
# All rights reserved.
#
# 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.
#
import dataclasses
import ipaddress
from chip import ChipDeviceCtrl, commissioning, discovery
@dataclasses.dataclass
class Session:
node_id: int
device: ChipDeviceCtrl.DeviceProxyWrapper
class ContextManager:
def __init__(self, devCtrl: ChipDeviceCtrl.ChipDeviceControllerBase, node_id: int, is_ble: bool):
self.devCtrl = devCtrl
self.node_id = node_id
self.is_ble = is_ble
def __enter__(self) -> Session:
return Session(
node_id=self.node_id,
device=self.devCtrl.GetConnectedDeviceSync(self.node_id, allowPASE=True, timeoutMs=1000))
def __exit__(self, type, value, traceback):
self.devCtrl.CloseSession(self.node_id)
if self.is_ble:
self.devCtrl.CloseBLEConnection(self.is_ble)
def establish_session(devCtrl: ChipDeviceCtrl.ChipDeviceControllerBase, parameter: commissioning.PaseParameters) -> ContextManager:
if isinstance(parameter, commissioning.PaseOverBLEParameters):
devCtrl.EstablishPASESessionBLE(parameter.setup_pin, parameter.discriminator, parameter.temporary_nodeid)
elif isinstance(parameter, commissioning.PaseOverIPParameters):
device = devCtrl.DiscoverCommissionableNodes(filterType=discovery.FilterType.LONG_DISCRIMINATOR,
filter=parameter.long_discriminator, stopOnFirst=True)
if not device:
raise ValueError("No commissionable device found")
selected_address = None
for ip in device[0].addresses:
if ipaddress.ip_address(ip).is_link_local:
# TODO(erjiaqing): To connect a device using link local address requires an interface identifier,
# however, the link local address returned from DiscoverCommissionableNodes does not have an
# interface identifier.
continue
selected_address = ip
break
if selected_address is None:
raise ValueError("The node for commissioning does not contains routable ip addresses information")
devCtrl.EstablishPASESessionIP(selected_address, parameter.setup_pin, parameter.temporary_nodeid)
else:
raise TypeError("Expect PaseOverBLEParameters or PaseOverIPParameters for establishing PASE session")
return ContextManager(
devCtrl=devCtrl, node_id=parameter.temporary_nodeid, is_ble=isinstance(parameter, commissioning.PaseOverBLEParameters))