[python-ldap] [BUG] KeyError on 'errno'

Matt Bosworth matt at codetastic.com
Wed May 24 19:24:09 EDT 2017 

Hi all,

  It looks like this might be a regression that snuck back in over the last
couple weeks?

  I just updated to the latest version of python-ldap (2.4.38),
django-auth-ldap (1.2.12), and django (1.11.1) and now successful LDAP
authentication raises an Exception (full stack trace below).

  Rolling back to 2.4.37 fixes the issue.

  Also, if I jump into python-ldap/ldapobject.py and change line 272 to
'pass' then things work.

Original line 272:
          e.args[0]['info'] = strerror(e.args[0]['errno'])

Stack trace:
Environment:


Request Method: POST
Request URL: http://localhost:8000/login/

Django Version: 1.11.1
Python Version: 2.7.13
Installed Applications:
('django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django_select2',
 'session_security',
 'bootstrapform',
 'rt.utils',
 'rt.main',
 'rt.menus',
 'rt.onset_survey',
 'rt.onset_survey_collab',
 'rt.tableau',
 'rt.patient_filter',
 'rt.prog_changes',
 'rt.caseconf',
 'rt.user_prefs',
 'batt_watchlist',
 'long_plot',
 'custom_reports')
Installed Middleware:
('django.middleware.security.SecurityMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'session_security.middleware.SessionSecurityMiddleware',
 'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware',
 'rt.middleware.RequireLoginMiddleware')



Traceback:

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django/core/handlers/exception.py"
in inner
  41.             response = get_response(request)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django/core/handlers/base.py"
in _get_response
  187.                 response = self.process_exception_by_middleware(e,
request)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django/core/handlers/base.py"
in _get_response
  185.                 response = wrapped_callback(request, *callback_args,
**callback_kwargs)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django/views/generic/base.py"
in view
  68.             return self.dispatch(request, *args, **kwargs)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django/utils/decorators.py"
in _wrapper
  67.             return bound_func(*args, **kwargs)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django/views/decorators/debug.py"
in sensitive_post_parameters_wrapper
  76.             return view(request, *args, **kwargs)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django/utils/decorators.py"
in bound_func
  63.                 return func.__get__(self, type(self))(*args2,
**kwargs2)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django/utils/decorators.py"
in _wrapper
  67.             return bound_func(*args, **kwargs)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django/utils/decorators.py"
in _wrapped_view
  149.                     response = view_func(request, *args, **kwargs)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django/utils/decorators.py"
in bound_func
  63.                 return func.__get__(self, type(self))(*args2,
**kwargs2)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django/utils/decorators.py"
in _wrapper
  67.             return bound_func(*args, **kwargs)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django/views/decorators/cache.py"
in _wrapped_view_func
  57.         response = view_func(request, *args, **kwargs)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django/utils/decorators.py"
in bound_func
  63.                 return func.__get__(self, type(self))(*args2,
**kwargs2)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django/contrib/auth/views.py"
in dispatch
  90.         return super(LoginView, self).dispatch(request, *args,
**kwargs)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django/views/generic/base.py"
in dispatch
  88.         return handler(request, *args, **kwargs)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django/views/generic/edit.py"
in post
  182.         if form.is_valid():

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django/forms/forms.py"
in is_valid
  183.         return self.is_bound and not self.errors

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django/forms/forms.py"
in errors
  175.             self.full_clean()

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django/forms/forms.py"
in full_clean
  385.         self._clean_form()

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django/forms/forms.py"
in _clean_form
  412.             cleaned_data = self.clean()

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django/contrib/auth/forms.py"
in clean
  187.             self.user_cache = authenticate(self.request,
username=username, password=password)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django/contrib/auth/__init__.py"
in authenticate
  101.             user = backend.authenticate(*args, **credentials)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django_auth_ldap/backend.py"
in authenticate
  171.             user = ldap_user.authenticate(password)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django_auth_ldap/backend.py"
in authenticate
  345.             self._check_requirements()

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django_auth_ldap/backend.py"
in _check_requirements
  510.         self._check_required_group()

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django_auth_ldap/backend.py"
in _check_required_group
  523.             result = required_group_dn.resolve(self)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django_auth_ldap/config.py"
in resolve
  693.         result = self.aggregator(self._resolve_children(ldap_user,
groups))

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django_auth_ldap/config.py"
in _resolve_children
  721.                 yield groups.is_member_of(child)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django_auth_ldap/backend.py"
in is_member_of
  848.             is_member = self._group_type.is_member(self._ldap_user,
group_dn)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/django_auth_ldap/config.py"
in is_member
  476.                 force_str(ldap_user.dn)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/ldap/ldapobject.py"
in compare_s
  474.     return self.compare_ext_s(dn,attr,value,None,None)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/ldap/ldapobject.py"
in compare_ext_s
  463.       resp_type, resp_data, resp_msgid, resp_ctrls =
self.result3(msgid,all=1,timeout=self.timeout)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/ldap/ldapobject.py"
in result3
  682.       resp_ctrl_classes=resp_ctrl_classes

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/ldap/ldapobject.py"
in result4
  689.     ldap_result =
self._ldap_call(self._l.result4,msgid,all,timeout,add_ctrls,add_intermediates,add_extop)

File
"/Users/bosworth/Documents/git/RtDjango/venv-py27/lib/python2.7/site-packages/ldap/ldapobject.py"
in _ldap_call
  273.         e.args[0]['info'] = strerror(e.args[0]['errno'])

Exception Type: KeyError at /login/
Exception Value: u'errno'


Hope this is useful!
Matt
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