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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2012 OpenStack LLC
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from keystone.common import kvs
from keystone.common import utils
from keystone import exception
from keystone import identity
class Identity(kvs.Base, identity.Driver):
def __init__(self):
super(Identity, self).__init__()
def default_assignment_driver(self):
return "keystone.assignment.backends.kvs.Assignment"
# Public interface
def authenticate(self, user_id=None, password=None):
user_ref = None
try:
user_ref = self._get_user(user_id)
except exception.UserNotFound:
raise AssertionError('Invalid user / password')
if not utils.check_password(password, user_ref.get('password')):
raise AssertionError('Invalid user / password')
return identity.filter_user(user_ref)
def _get_user(self, user_id):
try:
return self.db.get('user-%s' % user_id)
except exception.NotFound:
raise exception.UserNotFound(user_id=user_id)
def _get_user_by_name(self, user_name, domain_id):
try:
return self.db.get('user_name-%s' % user_name)
except exception.NotFound:
raise exception.UserNotFound(user_id=user_name)
def get_user(self, user_id):
return identity.filter_user(self._get_user(user_id))
def get_user_by_name(self, user_name, domain_id):
return identity.filter_user(
self._get_user_by_name(user_name, domain_id))
def list_users(self):
user_ids = self.db.get('user_list', [])
return [self.get_user(x) for x in user_ids]
# CRUD
def create_user(self, user_id, user):
try:
self.get_user(user_id)
except exception.UserNotFound:
pass
else:
msg = 'Duplicate ID, %s.' % user_id
raise exception.Conflict(type='user', details=msg)
try:
self.get_user_by_name(user['name'], user['domain_id'])
except exception.UserNotFound:
pass
else:
msg = 'Duplicate name, %s.' % user['name']
raise exception.Conflict(type='user', details=msg)
user = utils.hash_user_password(user)
new_user = user.copy()
new_user.setdefault('groups', [])
self.db.set('user-%s' % user_id, new_user)
self.db.set('user_name-%s' % new_user['name'], new_user)
user_list = set(self.db.get('user_list', []))
user_list.add(user_id)
self.db.set('user_list', list(user_list))
return identity.filter_user(new_user)
def update_user(self, user_id, user):
if 'name' in user:
existing = self.db.get('user_name-%s' % user['name'])
if existing and user_id != existing['id']:
msg = 'Duplicate name, %s.' % user['name']
raise exception.Conflict(type='user', details=msg)
# get the old name and delete it too
try:
old_user = self.db.get('user-%s' % user_id)
except exception.NotFound:
raise exception.UserNotFound(user_id=user_id)
new_user = old_user.copy()
user = utils.hash_user_password(user)
new_user.update(user)
if new_user['id'] != user_id:
raise exception.ValidationError('Cannot change user ID')
self.db.delete('user_name-%s' % old_user['name'])
self.db.set('user-%s' % user_id, new_user)
self.db.set('user_name-%s' % new_user['name'], new_user)
return new_user
def add_user_to_group(self, user_id, group_id):
self.get_group(group_id)
user_ref = self._get_user(user_id)
groups = set(user_ref.get('groups', []))
groups.add(group_id)
self.update_user(user_id, {'groups': list(groups)})
def check_user_in_group(self, user_id, group_id):
self.get_group(group_id)
user_ref = self._get_user(user_id)
if group_id not in set(user_ref.get('groups', [])):
raise exception.NotFound(_('User not found in group'))
def remove_user_from_group(self, user_id, group_id):
self.get_group(group_id)
user_ref = self._get_user(user_id)
groups = set(user_ref.get('groups', []))
try:
groups.remove(group_id)
except KeyError:
raise exception.NotFound(_('User not found in group'))
self.update_user(user_id, {'groups': list(groups)})
def list_users_in_group(self, group_id):
self.get_group(group_id)
user_keys = filter(lambda x: x.startswith("user-"), self.db.keys())
user_refs = [self.db.get(key) for key in user_keys]
user_refs_for_group = filter(lambda x: group_id in x['groups'],
user_refs)
return [identity.filter_user(x) for x in user_refs_for_group]
def list_groups_for_user(self, user_id):
user_ref = self._get_user(user_id)
group_ids = user_ref.get('groups', [])
return [self.get_group(x) for x in group_ids]
def delete_user(self, user_id):
try:
old_user = self.db.get('user-%s' % user_id)
except exception.NotFound:
raise exception.UserNotFound(user_id=user_id)
self.db.delete('user_name-%s' % old_user['name'])
self.db.delete('user-%s' % user_id)
user_list = set(self.db.get('user_list', []))
user_list.remove(user_id)
self.db.set('user_list', list(user_list))
# group crud
def create_group(self, group_id, group):
try:
return self.db.get('group-%s' % group_id)
except exception.NotFound:
pass
else:
msg = _('Duplicate ID, %s.') % group_id
raise exception.Conflict(type='group', details=msg)
try:
self.db.get('group_name-%s' % group['name'])
except exception.NotFound:
pass
else:
msg = _('Duplicate name, %s.') % group['name']
raise exception.Conflict(type='group', details=msg)
self.db.set('group-%s' % group_id, group)
self.db.set('group_name-%s' % group['name'], group)
group_list = set(self.db.get('group_list', []))
group_list.add(group_id)
self.db.set('group_list', list(group_list))
return group
def list_groups(self):
group_ids = self.db.get('group_list', [])
return [self.get_group(x) for x in group_ids]
def get_group(self, group_id):
try:
return self.db.get('group-%s' % group_id)
except exception.NotFound:
raise exception.GroupNotFound(group_id=group_id)
def update_group(self, group_id, group):
# First, make sure we are not trying to change the
# name to one that is already in use
try:
self.db.get('group_name-%s' % group['name'])
except exception.NotFound:
pass
else:
msg = _('Duplicate name, %s.') % group['name']
raise exception.Conflict(type='group', details=msg)
# Now, get the old name and delete it
try:
old_group = self.db.get('group-%s' % group_id)
except exception.NotFound:
raise exception.GroupNotFound(group_id=group_id)
self.db.delete('group_name-%s' % old_group['name'])
# Finally, actually do the update
self.db.set('group-%s' % group_id, group)
self.db.set('group_name-%s' % group['name'], group)
return group
def delete_group(self, group_id):
try:
group = self.db.get('group-%s' % group_id)
except exception.NotFound:
raise exception.GroupNotFound(group_id=group_id)
# Delete any entries in the group lists of all users
user_keys = filter(lambda x: x.startswith("user-"), self.db.keys())
user_refs = [self.db.get(key) for key in user_keys]
for user_ref in user_refs:
groups = set(user_ref.get('groups', []))
if group_id in groups:
groups.remove(group_id)
self.update_user(user_ref['id'], {'groups': list(groups)})
# Now delete the group itself
self.db.delete('group-%s' % group_id)
self.db.delete('group_name-%s' % group['name'])
group_list = set(self.db.get('group_list', []))
group_list.remove(group_id)
self.db.set('group_list', list(group_list))
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