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# Copyright 2019 Dom Sekotill <dom.sekotill@kodo.org.uk>
#
# 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.
"""
Helpers for network configuration
"""
from enum import Enum, auto
_registry = {}
def register(variable, cls=None):
"""
Register a class as the type for a config option's values
Can be used as a decorator if 'cls' is not provided:
@register('my_option')
class MyType:
...
"""
if cls is not None:
_registry[variable] = cls
return None
def decorator(cls):
_registry[variable] = cls
return cls
return decorator
def get_type(variable):
"""Get a type-converter for a given configuration variable"""
return _registry.get(variable, UnknownType)
class _UnknownTypeMeta(type):
def __instancecheck__(cls, instance):
return isinstance(instance, (str, int))
# pylint: disable=too-few-public-methods
class UnknownType(metaclass=_UnknownTypeMeta):
"""A pseudo type for unknown variables which forces non-ints into strings"""
def __new__(cls, from_instance):
if not isinstance(from_instance, (str, int)):
return str(from_instance)
return from_instance
class ConfigEnum(Enum):
"""Base enum class for configuration enums used with the SET_NETWORK command"""
def __str__(self):
return self.value
@staticmethod
def _generate_next_value_(name, *_):
return name.replace("_", "-")
@register("key_mgmt")
class KeyManagementValue(ConfigEnum):
"""Enums for the 'key_mgmt' network setting"""
WPA_PSK = auto()
WPA_EAP = auto()
IEEE8021X = auto()
NONE = auto()
WPA_NONE = auto()
FT_PSK = auto()
FT_EAP = auto()
FT_EAP_SHA384 = auto()
WPA_PSK_SHA256 = auto()
WPA_EAP_SHA256 = auto()
SAE = auto()
FT_SAE = auto()
WPA_EAP_SUITE_B = auto()
WPA_EAP_SUITE_B_192 = auto()
OSEN = auto()
FILS_SHA256 = auto()
FILS_SHA384 = auto()
FT_FILS_SHA256 = auto()
FT_FILS_SHA384 = auto()
OWE = auto()
DPP = auto()
register("priority", int)
register("psk", str)
register("ssid", str)