diff options
Diffstat (limited to 'keystone-moon/keystone/trust/controllers.py')
| -rw-r--r-- | keystone-moon/keystone/trust/controllers.py | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/keystone-moon/keystone/trust/controllers.py b/keystone-moon/keystone/trust/controllers.py new file mode 100644 index 00000000..60e34ccd --- /dev/null +++ b/keystone-moon/keystone/trust/controllers.py @@ -0,0 +1,287 @@ +# Copyright 2013 OpenStack Foundation +# +# 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. + +import uuid + +from oslo_config import cfg +from oslo_log import log +from oslo_utils import timeutils +import six + +from keystone import assignment +from keystone.common import controller +from keystone.common import dependency +from keystone.common import validation +from keystone import exception +from keystone.i18n import _ +from keystone.models import token_model +from keystone import notifications +from keystone.openstack.common import versionutils +from keystone.trust import schema + + +CONF = cfg.CONF + +LOG = log.getLogger(__name__) + + +def _trustor_trustee_only(trust, user_id): + if (user_id != trust.get('trustee_user_id') and + user_id != trust.get('trustor_user_id')): + raise exception.Forbidden() + + +def _admin_trustor_only(context, trust, user_id): + if user_id != trust.get('trustor_user_id') and not context['is_admin']: + raise exception.Forbidden() + + +@dependency.requires('assignment_api', 'identity_api', 'role_api', + 'token_provider_api', 'trust_api') +class TrustV3(controller.V3Controller): + collection_name = "trusts" + member_name = "trust" + + @classmethod + def base_url(cls, context, path=None): + """Construct a path and pass it to V3Controller.base_url method.""" + + # NOTE(stevemar): Overriding path to /OS-TRUST/trusts so that + # V3Controller.base_url handles setting the self link correctly. + path = '/OS-TRUST/' + cls.collection_name + return super(TrustV3, cls).base_url(context, path=path) + + def _get_user_id(self, context): + if 'token_id' in context: + token_id = context['token_id'] + token_data = self.token_provider_api.validate_token(token_id) + token_ref = token_model.KeystoneToken(token_id=token_id, + token_data=token_data) + return token_ref.user_id + return None + + def get_trust(self, context, trust_id): + user_id = self._get_user_id(context) + trust = self.trust_api.get_trust(trust_id) + if not trust: + raise exception.TrustNotFound(trust_id=trust_id) + _trustor_trustee_only(trust, user_id) + self._fill_in_roles(context, trust, + self.role_api.list_roles()) + return TrustV3.wrap_member(context, trust) + + def _fill_in_roles(self, context, trust, all_roles): + if trust.get('expires_at') is not None: + trust['expires_at'] = (timeutils.isotime + (trust['expires_at'], + subsecond=True)) + + if 'roles' not in trust: + trust['roles'] = [] + trust_full_roles = [] + for trust_role in trust['roles']: + if isinstance(trust_role, six.string_types): + trust_role = {'id': trust_role} + matching_roles = [x for x in all_roles + if x['id'] == trust_role['id']] + if matching_roles: + full_role = assignment.controllers.RoleV3.wrap_member( + context, matching_roles[0])['role'] + trust_full_roles.append(full_role) + trust['roles'] = trust_full_roles + trust['roles_links'] = { + 'self': (self.base_url(context) + "/%s/roles" % trust['id']), + 'next': None, + 'previous': None} + + def _normalize_role_list(self, trust, all_roles): + trust_roles = [] + all_role_names = {r['name']: r for r in all_roles} + for role in trust.get('roles', []): + if 'id' in role: + trust_roles.append({'id': role['id']}) + elif 'name' in role: + rolename = role['name'] + if rolename in all_role_names: + trust_roles.append({'id': + all_role_names[rolename]['id']}) + else: + raise exception.RoleNotFound("role %s is not defined" % + rolename) + else: + raise exception.ValidationError(attribute='id or name', + target='roles') + return trust_roles + + @controller.protected() + @validation.validated(schema.trust_create, 'trust') + def create_trust(self, context, trust=None): + """Create a new trust. + + The user creating the trust must be the trustor. + + """ + if not trust: + raise exception.ValidationError(attribute='trust', + target='request') + + auth_context = context.get('environment', + {}).get('KEYSTONE_AUTH_CONTEXT', {}) + + # Check if delegated via trust + if auth_context.get('is_delegated_auth'): + # Redelegation case + src_trust_id = auth_context['trust_id'] + if not src_trust_id: + raise exception.Forbidden( + _('Redelegation allowed for delegated by trust only')) + + redelegated_trust = self.trust_api.get_trust(src_trust_id) + else: + redelegated_trust = None + + if trust.get('project_id'): + self._require_role(trust) + self._require_user_is_trustor(context, trust) + self._require_trustee_exists(trust['trustee_user_id']) + all_roles = self.role_api.list_roles() + # Normalize roles + normalized_roles = self._normalize_role_list(trust, all_roles) + trust['roles'] = normalized_roles + self._require_trustor_has_role_in_project(trust) + trust['expires_at'] = self._parse_expiration_date( + trust.get('expires_at')) + trust_id = uuid.uuid4().hex + initiator = notifications._get_request_audit_info(context) + new_trust = self.trust_api.create_trust(trust_id, trust, + normalized_roles, + redelegated_trust, + initiator) + self._fill_in_roles(context, new_trust, all_roles) + return TrustV3.wrap_member(context, new_trust) + + def _require_trustee_exists(self, trustee_user_id): + self.identity_api.get_user(trustee_user_id) + + def _require_user_is_trustor(self, context, trust): + user_id = self._get_user_id(context) + if user_id != trust.get('trustor_user_id'): + raise exception.Forbidden( + _("The authenticated user should match the trustor.")) + + def _require_role(self, trust): + if not trust.get('roles'): + raise exception.Forbidden( + _('At least one role should be specified.')) + + def _get_user_role(self, trust): + if not self._attribute_is_empty(trust, 'project_id'): + return self.assignment_api.get_roles_for_user_and_project( + trust['trustor_user_id'], trust['project_id']) + else: + return [] + + def _require_trustor_has_role_in_project(self, trust): + user_roles = self._get_user_role(trust) + for trust_role in trust['roles']: + matching_roles = [x for x in user_roles + if x == trust_role['id']] + if not matching_roles: + raise exception.RoleNotFound(role_id=trust_role['id']) + + def _parse_expiration_date(self, expiration_date): + if expiration_date is None: + return None + if not expiration_date.endswith('Z'): + expiration_date += 'Z' + try: + return timeutils.parse_isotime(expiration_date) + except ValueError: + raise exception.ValidationTimeStampError() + + def _check_role_for_trust(self, context, trust_id, role_id): + """Checks if a role has been assigned to a trust.""" + trust = self.trust_api.get_trust(trust_id) + if not trust: + raise exception.TrustNotFound(trust_id=trust_id) + user_id = self._get_user_id(context) + _trustor_trustee_only(trust, user_id) + if not any(role['id'] == role_id for role in trust['roles']): + raise exception.RoleNotFound(role_id=role_id) + + @controller.protected() + def list_trusts(self, context): + query = context['query_string'] + trusts = [] + if not query: + self.assert_admin(context) + trusts += self.trust_api.list_trusts() + if 'trustor_user_id' in query: + user_id = query['trustor_user_id'] + calling_user_id = self._get_user_id(context) + if user_id != calling_user_id: + raise exception.Forbidden() + trusts += (self.trust_api. + list_trusts_for_trustor(user_id)) + if 'trustee_user_id' in query: + user_id = query['trustee_user_id'] + calling_user_id = self._get_user_id(context) + if user_id != calling_user_id: + raise exception.Forbidden() + trusts += self.trust_api.list_trusts_for_trustee(user_id) + for trust in trusts: + # get_trust returns roles, list_trusts does not + # It seems in some circumstances, roles does not + # exist in the query response, so check first + if 'roles' in trust: + del trust['roles'] + if trust.get('expires_at') is not None: + trust['expires_at'] = (timeutils.isotime + (trust['expires_at'], + subsecond=True)) + return TrustV3.wrap_collection(context, trusts) + + @controller.protected() + def delete_trust(self, context, trust_id): + trust = self.trust_api.get_trust(trust_id) + if not trust: + raise exception.TrustNotFound(trust_id=trust_id) + + user_id = self._get_user_id(context) + _admin_trustor_only(context, trust, user_id) + initiator = notifications._get_request_audit_info(context) + self.trust_api.delete_trust(trust_id, initiator) + + @controller.protected() + def list_roles_for_trust(self, context, trust_id): + trust = self.get_trust(context, trust_id)['trust'] + if not trust: + raise exception.TrustNotFound(trust_id=trust_id) + user_id = self._get_user_id(context) + _trustor_trustee_only(trust, user_id) + return {'roles': trust['roles'], + 'links': trust['roles_links']} + + @versionutils.deprecated( + versionutils.deprecated.KILO, + remove_in=+2) + def check_role_for_trust(self, context, trust_id, role_id): + return self._check_role_for_trust(self, context, trust_id, role_id) + + @controller.protected() + def get_role_for_trust(self, context, trust_id, role_id): + """Get a role that has been assigned to a trust.""" + self._check_role_for_trust(context, trust_id, role_id) + role = self.role_api.get_role(role_id) + return assignment.controllers.RoleV3.wrap_member(context, role) |