84 lines
3.3 KiB
Python
84 lines
3.3 KiB
Python
"""
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certifi.py
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~~~~~~~~~~
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This module returns the installation location of cacert.pem or its contents.
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"""
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import sys
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import atexit
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def exit_cacert_ctx() -> None:
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_CACERT_CTX.__exit__(None, None, None) # type: ignore[union-attr]
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if sys.version_info >= (3, 11):
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from importlib.resources import as_file, files
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_CACERT_CTX = None
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_CACERT_PATH = None
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def where() -> str:
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# This is slightly terrible, but we want to delay extracting the file
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# in cases where we're inside of a zipimport situation until someone
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# actually calls where(), but we don't want to re-extract the file
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# on every call of where(), so we'll do it once then store it in a
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# global variable.
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global _CACERT_CTX
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global _CACERT_PATH
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if _CACERT_PATH is None:
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# This is slightly janky, the importlib.resources API wants you to
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# manage the cleanup of this file, so it doesn't actually return a
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# path, it returns a context manager that will give you the path
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# when you enter it and will do any cleanup when you leave it. In
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# the common case of not needing a temporary file, it will just
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# return the file system location and the __exit__() is a no-op.
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#
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# We also have to hold onto the actual context manager, because
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# it will do the cleanup whenever it gets garbage collected, so
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# we will also store that at the global level as well.
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_CACERT_CTX = as_file(files("certifi").joinpath("cacert.pem"))
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_CACERT_PATH = str(_CACERT_CTX.__enter__())
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atexit.register(exit_cacert_ctx)
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return _CACERT_PATH
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def contents() -> str:
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return files("certifi").joinpath("cacert.pem").read_text(encoding="ascii")
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else:
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from importlib.resources import path as get_path, read_text
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_CACERT_CTX = None
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_CACERT_PATH = None
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def where() -> str:
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# This is slightly terrible, but we want to delay extracting the
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# file in cases where we're inside of a zipimport situation until
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# someone actually calls where(), but we don't want to re-extract
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# the file on every call of where(), so we'll do it once then store
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# it in a global variable.
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global _CACERT_CTX
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global _CACERT_PATH
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if _CACERT_PATH is None:
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# This is slightly janky, the importlib.resources API wants you
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# to manage the cleanup of this file, so it doesn't actually
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# return a path, it returns a context manager that will give
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# you the path when you enter it and will do any cleanup when
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# you leave it. In the common case of not needing a temporary
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# file, it will just return the file system location and the
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# __exit__() is a no-op.
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#
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# We also have to hold onto the actual context manager, because
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# it will do the cleanup whenever it gets garbage collected, so
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# we will also store that at the global level as well.
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_CACERT_CTX = get_path("certifi", "cacert.pem")
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_CACERT_PATH = str(_CACERT_CTX.__enter__())
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atexit.register(exit_cacert_ctx)
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return _CACERT_PATH
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def contents() -> str:
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return read_text("certifi", "cacert.pem", encoding="ascii")
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