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63 lines
1.8 KiB
Python
63 lines
1.8 KiB
Python
"""Stuff that differs in different Python versions and platform
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distributions."""
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import logging
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import os
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import sys
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__all__ = ["get_path_uid", "stdlib_pkgs", "WINDOWS"]
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logger = logging.getLogger(__name__)
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def has_tls() -> bool:
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try:
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import _ssl # noqa: F401 # ignore unused
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return True
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except ImportError:
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pass
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from pip._vendor.urllib3.util import IS_PYOPENSSL
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return IS_PYOPENSSL
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def get_path_uid(path: str) -> int:
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"""
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Return path's uid.
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Does not follow symlinks:
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https://github.com/pypa/pip/pull/935#discussion_r5307003
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Placed this function in compat due to differences on AIX and
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Jython, that should eventually go away.
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:raises OSError: When path is a symlink or can't be read.
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"""
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if hasattr(os, "O_NOFOLLOW"):
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fd = os.open(path, os.O_RDONLY | os.O_NOFOLLOW)
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file_uid = os.fstat(fd).st_uid
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os.close(fd)
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else: # AIX and Jython
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# WARNING: time of check vulnerability, but best we can do w/o NOFOLLOW
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if not os.path.islink(path):
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# older versions of Jython don't have `os.fstat`
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file_uid = os.stat(path).st_uid
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else:
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# raise OSError for parity with os.O_NOFOLLOW above
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raise OSError(f"{path} is a symlink; Will not return uid for symlinks")
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return file_uid
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# packages in the stdlib that may have installation metadata, but should not be
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# considered 'installed'. this theoretically could be determined based on
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# dist.location (py27:`sysconfig.get_paths()['stdlib']`,
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# py26:sysconfig.get_config_vars('LIBDEST')), but fear platform variation may
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# make this ineffective, so hard-coding
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stdlib_pkgs = {"python", "wsgiref", "argparse"}
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# windows detection, covers cpython and ironpython
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WINDOWS = sys.platform.startswith("win") or (sys.platform == "cli" and os.name == "nt")
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