60 lines
1.5 KiB
Python
60 lines
1.5 KiB
Python
# Shared implementation internals.
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# Copyright 2012 Ray Brown
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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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# The License is also distributed with this work in the file named "LICENSE."
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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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"""Utilities
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This module contains private implementation details shared among modules of
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the PyDTLS package.
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"""
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from logging import getLogger
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_logger = getLogger(__name__)
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class _Rsrc(object):
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"""Wrapper base for library-owned resources"""
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def __init__(self, value):
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self._value = value
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@property
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def value(self):
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return self._value
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@property
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def raw(self):
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return self._value.raw
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class _BIO(_Rsrc):
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"""BIO wrapper"""
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def __init__(self, value):
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super(_BIO, self).__init__(value)
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self.owned = True
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def disown(self):
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self.owned = False
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def __del__(self):
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if self.owned:
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_logger.debug("Freeing BIO: %d", self.raw)
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from openssl import BIO_free
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BIO_free(self._value)
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self.owned = False
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self._value = None
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