[Patches] [ python-Patches-944110 ] urllib2 authentication
mishandles empty pass bugfix 944082
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Wed May 5 21:42:54 EDT 2004
Patches item #944110, was opened at 2004-04-29 02:52
Message generated for change (Comment added) made by loewis
You can respond by visiting:
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Category: Library (Lib)
Group: None
>Status: Closed
>Resolution: Accepted
Priority: 7
Submitted By: sc0rp (yangir)
Assigned to: Martin v. Löwis (loewis)
Summary: urllib2 authentication mishandles empty pass bugfix 944082
Initial Comment:
If example.org requires authentication, then following
code:
host = 'example.org'
user = 'testuser'
password = ''
url = 'http://%s/' % host
authInfo = urllib2.HTTPPasswordMgrWithDefaultRealm()
authInfo.add_password( None, host, user, password )
authHandler = urllib2.HTTPBasicAuthHandler( authInfo )
opener = urllib2.build_opener( authHandler )
urlFile = opener.open( url )
print urlFile.read()
will die by throwing HTTPError 401:
File "/usr/lib/python2.3/urllib2.py", line 419, in
http_error_default
raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
urllib2.HTTPError: HTTP Error 401: Authorization Required
even if authenticating with 'testuser' and empty
password is valid.
Empty password is mishandled (i.e. authentication with
empty password string is ignored) in
AbstractBasicAuthHandler.retry_http_basic_auth
def retry_http_basic_auth(self, host, req, realm):
user,pw = self.passwd.find_user_password(realm,
host)
if pw:
[...]
It can be fixed by changing:
if pw:
to
if pw is not None:
Patch attached.
----------------------------------------------------------------------
>Comment By: Martin v. Löwis (loewis)
Date: 2004-05-06 03:42
Message:
Logged In: YES
user_id=21627
Thanks for the patch. Applied as
urllib2.py 1.53.6.5, 1.65
NEWS 1.831.4.103
----------------------------------------------------------------------
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