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Convert proxies extracted from windows registry to http for older Python versions. See: https://github.com/python/cpython/issues/86793 Authored by: coletdjnz
41 lines
1.7 KiB
Python
41 lines
1.7 KiB
Python
# flake8: noqa: F405
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from urllib.request import * # noqa: F403
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from ..compat_utils import passthrough_module
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passthrough_module(__name__, 'urllib.request')
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del passthrough_module
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from .. import compat_os_name
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if compat_os_name == 'nt':
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# On older python versions, proxies are extracted from Windows registry erroneously. [1]
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# If the https proxy in the registry does not have a scheme, urllib will incorrectly add https:// to it. [2]
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# It is unlikely that the user has actually set it to be https, so we should be fine to safely downgrade
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# it to http on these older python versions to avoid issues
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# This also applies for ftp proxy type, as ftp:// proxy scheme is not supported.
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# 1: https://github.com/python/cpython/issues/86793
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# 2: https://github.com/python/cpython/blob/51f1ae5ceb0673316c4e4b0175384e892e33cc6e/Lib/urllib/request.py#L2683-L2698
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import sys
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from urllib.request import getproxies_environment, getproxies_registry
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def getproxies_registry_patched():
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proxies = getproxies_registry()
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if (
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sys.version_info >= (3, 10, 5) # https://docs.python.org/3.10/whatsnew/changelog.html#python-3-10-5-final
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or (3, 9, 13) <= sys.version_info < (3, 10) # https://docs.python.org/3.9/whatsnew/changelog.html#python-3-9-13-final
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):
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return proxies
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for scheme in ('https', 'ftp'):
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if scheme in proxies and proxies[scheme].startswith(f'{scheme}://'):
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proxies[scheme] = 'http' + proxies[scheme][len(scheme):]
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return proxies
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def getproxies():
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return getproxies_environment() or getproxies_registry_patched()
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del compat_os_name
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