55 lines
1.5 KiB
Python
55 lines
1.5 KiB
Python
# Copyright (c) 2014, Menno Smits
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# Released subject to the New BSD License
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# Please see http://en.wikipedia.org/wiki/BSD_licenses
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"""
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Work-around for Python Issue 5943 (http://bugs.python.org/issue5949).
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This will patch imaplib's IMAP4_SSL.readline method with the fixed
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verion in Python versions that are known to have the problem.
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The problem definitely exists in Python 2.5 and 2.6 up until but not
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including 2.6.5. It was also fixed in Python 2.7 alpha 2 so no attempt
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is made to patch 2.7 versions.
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Please let me know if there's more Python versions that should be
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patched.
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Efforts are made to only perform the patch once.
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"""
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from __future__ import unicode_literals
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import sys
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import imaplib
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def _is_affected_version(sys_version):
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sys_version = sys_version[:3]
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if sys_version < (2, 5, 0):
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# Not sure whether these old versions are affected so being
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# conservative and not patching.
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return False
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elif sys_version < (2, 6, 5):
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return True
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return False
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def _fixed_readline(self):
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"""Read line from remote."""
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line = []
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while True:
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char = self.sslobj.read(1)
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line.append(char)
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if char in ("\n", ""):
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return ''.join(line)
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_fixed_readline.patched = True # Marker to indicate patched version
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ssl_class = imaplib.IMAP4_SSL
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def apply_patch():
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if _is_affected_version(sys.version_info) and not hasattr(ssl_class.readline, 'patched'):
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ssl_class.readline = _fixed_readline
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