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Author nagdon
Recipients nagdon
Date 2020-12-28.15:42:33
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Marked as misclassified Yes
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The is_suburi(self, base, test) method of HTTPPasswordMgr in the urllib.request module tries to "Check if test is below base in a URI tree", but it uses the posixpath.commonprefix() function. This is problematic because commonprefix ignores the path structure (for example commonprefix(['/usr/lib', '/usr/local/lib'])=='/usr/l') and therefore the current implementation of is_suburi is essentially equivalent to calling str.startswith after some normalization steps.

If we want to say that is *NOT* below in a URI tree, then the call to commonprefix should be replaced by a call to posixpath.commonpath(), which does the right thing.
Date User Action Args
2020-12-28 15:42:34nagdonsetrecipients: + nagdon
2020-12-28 15:42:33nagdonsetmessageid: <>
2020-12-28 15:42:33nagdonlinkissue42766 messages
2020-12-28 15:42:33nagdoncreate