83 lines
2.6 KiB
Python
83 lines
2.6 KiB
Python
from django.contrib.auth.models import Permission
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from system import config
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class AnonymousAuth(object):
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"""
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Authenticates the AnonymousUser against the Permission-Group 'Anonymous'.
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No rights are granted unless the group is defined and contains them.
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"""
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supports_anonymous_user = True
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supports_inactive_user = True
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supports_object_permissions = False
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def authenticate(self, username=None, password=None):
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"""
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Authenticate a user based in username / password.
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- always return None as anonymous can't login..
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"""
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return None
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def get_group_permissions(self, user_obj, obj=None):
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"""
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Return the permissions a user is graneted by his group membership(s).
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- try to return the permissions for the 'Anonymous' group
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"""
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if not user_obj.is_anonymous() or obj is not None or \
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not config['system_enable_anonymous']:
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return set()
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perms = Permission.objects.filter(group__name='Anonymous')
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if perms is None:
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return set()
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perms = perms.values_list('content_type__app_label', 'codename').order_by()
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return set([u'%s.%s' % (ct, name) for ct, name in perms])
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def get_all_permissions(self, user_obj, obj=None):
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"""
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Return all permissions a user is granted including goup permissions.
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- for anonymous it's identical to get_group_permissions
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"""
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return self.get_group_permissions(user_obj, obj)
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def has_perm(self, user_obj, perm, obj=None):
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"""
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Check if the user as a specific permission
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"""
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if not user_obj.is_anonymous() or obj is not None or \
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not config['system_enable_anonymous']:
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return False
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return (perm in self.get_all_permissions(user_obj))
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def has_module_perm(self, user_obj, app_label):
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"""
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Check if the user has permissions on the module app_label
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"""
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if not user_obj.is_anonymous() or \
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not config['system_enable_anonymous']:
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return False
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for perm in self.get_all_permissions(user_obj):
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if perm[:perm.index('.')] == app_label:
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return True
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return False
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def get_user(self, user_id):
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"""
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Return the User object for user_id
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- for anonymous it's always None
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"""
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return None
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def anonymous_context_additions(RequestContext):
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"""
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Add a variable to the request context that will indicate
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if anonymous login is possible at all.
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"""
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return { 'os_enable_anonymous_login' : config['system_enable_anonymous']}
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