root / snf-astakos-app / astakos / im / auth_providers.py @ c101b32b
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# Copyright 2011 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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# 1. Redistributions of source code must retain the above
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# copyright notice, this list of conditions and the following
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# disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials
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# provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.
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from django.core.urlresolvers import reverse |
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from django.utils.translation import ugettext as _ |
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from django.utils.datastructures import SortedDict |
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from django.conf import settings |
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from astakos.im import settings as astakos_settings |
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import logging |
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logger = logging.getLogger(__name__) |
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# providers registry
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PROVIDERS = SortedDict() |
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_PROVIDERS = {} |
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class AuthProviderBase(type): |
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def __new__(cls, name, bases, dct): |
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include = False
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if [b for b in bases if isinstance(b, AuthProviderBase)]: |
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type_id = dct.get('module')
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if type_id:
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include = True
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if type_id in astakos_settings.IM_MODULES: |
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dct['module_enabled'] = True |
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newcls = super(AuthProviderBase, cls).__new__(cls, name, bases, dct)
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if include:
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_PROVIDERS[type_id] = newcls |
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return newcls
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class AuthProvider(object): |
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__metaclass__ = AuthProviderBase |
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module = None
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module_active = False
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module_enabled = False
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one_per_user = False
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def __init__(self, user=None): |
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self.user = user
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def __getattr__(self, key): |
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if not key.startswith('get_'): |
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return super(AuthProvider, self).__getattr__(key) |
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if key.endswith('_display') or key.endswith('template'): |
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attr = key.replace('_display', '').replace('get_','') |
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settings_attr = self.get_setting(attr.upper())
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if not settings_attr: |
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return getattr(self, attr) |
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return settings_attr
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else:
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return super(AuthProvider, self).__getattr__(key) |
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def get_setting(self, name, default=None): |
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attr = 'ASTAKOS_AUTH_PROVIDER_%s_%s' % (self.module.upper(), name.upper()) |
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return getattr(settings, attr, default) |
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def is_available_for_login(self): |
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""" A user can login using authentication provider"""
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return self.is_active() and self.get_setting('CAN_LOGIN', |
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self.is_active())
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def is_available_for_create(self): |
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""" A user can create an account using this provider"""
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return self.is_active() and self.get_setting('CAN_CREATE', |
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self.is_active())
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def is_available_for_add(self): |
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""" A user can assign provider authentication method"""
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return self.is_active() and self.get_setting('CAN_ADD', |
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self.is_active())
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def is_active(self): |
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return self.module in astakos_settings.IM_MODULES |
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class LocalAuthProvider(AuthProvider): |
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module = 'local'
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title = _('Local password')
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description = _('Create a local password for your account')
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create_prompt = _('Create an account')
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add_prompt = _('Create a local password for your account')
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@property
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def add_url(self): |
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return reverse('password_change') |
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one_per_user = True
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login_template = 'im/auth/local_login_form.html'
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login_prompt_template = 'im/auth/local_login_prompt.html'
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signup_prompt_template = 'im/auth/local_signup_prompt.html'
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details_tpl = _('You can login to your account using your'
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' %(auth_backend)s password.')
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@property
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def extra_actions(self): |
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return [(_('Change password'), reverse('password_change')), ] |
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class ShibbolethAuthProvider(AuthProvider): |
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module = 'shibboleth'
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title = _('Academic credentials (Shibboleth)')
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description = _('Allows you to login to your account using your academic '
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'credentials')
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add_prompt = _('Add academic credentials to your account.')
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@property
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def add_url(self): |
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return reverse('astakos.im.target.shibboleth.login') |
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login_template = 'im/auth/shibboleth_login.html'
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login_prompt_template = 'im/auth/shibboleth_login_prompt.html'
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class TwitterAuthProvider(AuthProvider): |
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module = 'twitter'
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title = _('Twitter')
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description = _('Allows you to login to your account using your twitter '
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'account')
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add_prompt = _('Connect with your Twitter account.')
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@property
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def add_url(self): |
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return reverse('astakos.im.target.twitter.login') |
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login_template = 'im/auth/twitter_login.html'
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login_prompt_template = 'im/auth/twitter_login_prompt.html'
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def get_provider(id, user_obj=None, default=None): |
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"""
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Return a provider instance from the auth providers registry.
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"""
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return PROVIDERS.get(id, default)(user_obj) |
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for module in astakos_settings.IM_MODULES: |
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if module in _PROVIDERS: |
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PROVIDERS[module] = _PROVIDERS[module] |
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