# keystone.common.policies.trust

# Source code for keystone.common.policies.trust

    # 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 oslo_log import versionutils
    from oslo_policy import policy

    from keystone.common.policies import base

    RULE_TRUSTOR = 'user_id:%(target.trust.trustor_user_id)s'
    RULE_TRUSTEE = 'user_id:%(target.trust.trustee_user_id)s'
    SYSTEM_READER_OR_TRUSTOR_OR_TRUSTEE = (
        base.SYSTEM_READER + ' or ' + RULE_TRUSTOR + ' or ' + RULE_TRUSTEE
    )
    SYSTEM_READER_OR_TRUSTOR = base.SYSTEM_READER + ' or ' + RULE_TRUSTOR
    SYSTEM_READER_OR_TRUSTEE = base.SYSTEM_READER + ' or ' + RULE_TRUSTEE
    SYSTEM_ADMIN_OR_TRUSTOR = base.SYSTEM_ADMIN + ' or ' + RULE_TRUSTOR

    ADMIN_OR_TRUSTOR = base.RULE_ADMIN_REQUIRED + ' or ' + RULE_TRUSTOR
    ADMIN_OR_SYSTEM_READER_OR_TRUSTOR = (
        '('
        + base.RULE_ADMIN_REQUIRED
        + ') or '
        + '('
        + SYSTEM_READER_OR_TRUSTOR
        + ')'
    )
    ADMIN_OR_SYSTEM_READER_OR_TRUSTEE = (
        '('
        + base.RULE_ADMIN_REQUIRED
        + ') or '
        + '('
        + SYSTEM_READER_OR_TRUSTEE
        + ')'
    )
    ADMIN_OR_SYSTEM_READER_OR_TRUSTOR_OR_TRUSTEE = (
        '('
        + base.RULE_ADMIN_REQUIRED
        + ') or '
        + '('
        + SYSTEM_READER_OR_TRUSTOR_OR_TRUSTEE
        + ')'
    )

    DEPRECATED_REASON = (
        "The trust API is now aware of system scope and default roles."
    )

    deprecated_list_trusts = policy.DeprecatedRule(
        name=base.IDENTITY % 'list_trusts',
        check_str=base.RULE_ADMIN_REQUIRED,
        deprecated_reason=DEPRECATED_REASON,
        deprecated_since=versionutils.deprecated.TRAIN,
    )
    deprecated_list_roles_for_trust = policy.DeprecatedRule(
        name=base.IDENTITY % 'list_roles_for_trust',
        check_str=RULE_TRUSTOR + ' or ' + RULE_TRUSTEE,
        deprecated_reason=DEPRECATED_REASON,
        deprecated_since=versionutils.deprecated.TRAIN,
    )
    deprecated_get_role_for_trust = policy.DeprecatedRule(
        name=base.IDENTITY % 'get_role_for_trust',
        check_str=RULE_TRUSTOR + ' or ' + RULE_TRUSTEE,
        deprecated_reason=DEPRECATED_REASON,
        deprecated_since=versionutils.deprecated.TRAIN,
    )
    deprecated_delete_trust = policy.DeprecatedRule(
        name=base.IDENTITY % 'delete_trust',
        check_str=RULE_TRUSTOR,
        deprecated_reason=DEPRECATED_REASON,
        deprecated_since=versionutils.deprecated.TRAIN,
    )
    deprecated_get_trust = policy.DeprecatedRule(
        name=base.IDENTITY % 'get_trust',
        check_str=RULE_TRUSTOR + ' or ' + RULE_TRUSTEE,
        deprecated_reason=DEPRECATED_REASON,
        deprecated_since=versionutils.deprecated.TRAIN,
    )

    trust_policies = [
        policy.DocumentedRuleDefault(
            name=base.IDENTITY % 'create_trust',
            check_str=base.RULE_TRUST_OWNER,
            # FIXME(lbragstad): Trusts have the ability to optionally include a
            # project, but until trusts deal with system scope it's not really
            # useful. For now, this should be a project only operation.
            scope_types=['project'],
            description='Create trust.',
            operations=[{'path': '/v3/OS-TRUST/trusts', 'method': 'POST'}],
        ),
        policy.DocumentedRuleDefault(
            name=base.IDENTITY % 'list_trusts',
            check_str=base.RULE_ADMIN_OR_SYSTEM_READER,
            scope_types=['system', 'project'],
            description='List trusts.',
            operations=[
                {'path': '/v3/OS-TRUST/trusts', 'method': 'GET'},
                {'path': '/v3/OS-TRUST/trusts', 'method': 'HEAD'},
            ],
            deprecated_rule=deprecated_list_trusts,
        ),
        policy.DocumentedRuleDefault(
            name=base.IDENTITY % 'list_trusts_for_trustor',
            check_str=ADMIN_OR_SYSTEM_READER_OR_TRUSTOR,
            scope_types=['system', 'project'],
            description='List trusts for trustor.',
            operations=[
                {
                    'path': '/v3/OS-TRUST/trusts?'
                    'trustor_user_id={trustor_user_id}',
                    'method': 'GET',
                },
                {
                    'path': '/v3/OS-TRUST/trusts?'
                    'trustor_user_id={trustor_user_id}',
                    'method': 'HEAD',
                },
            ],
        ),
        policy.DocumentedRuleDefault(
            name=base.IDENTITY % 'list_trusts_for_trustee',
            check_str=ADMIN_OR_SYSTEM_READER_OR_TRUSTEE,
            scope_types=['system', 'project'],
            description='List trusts for trustee.',
            operations=[
                {
                    'path': '/v3/OS-TRUST/trusts?'
                    'trustee_user_id={trustee_user_id}',
                    'method': 'GET',
                },
                {
                    'path': '/v3/OS-TRUST/trusts?'
                    'trustee_user_id={trustee_user_id}',
                    'method': 'HEAD',
                },
            ],
        ),
        policy.DocumentedRuleDefault(
            name=base.IDENTITY % 'list_roles_for_trust',
            check_str=ADMIN_OR_SYSTEM_READER_OR_TRUSTOR_OR_TRUSTEE,
            scope_types=['system', 'project'],
            description='List roles delegated by a trust.',
            operations=[
                {'path': '/v3/OS-TRUST/trusts/{trust_id}/roles', 'method': 'GET'},
                {'path': '/v3/OS-TRUST/trusts/{trust_id}/roles', 'method': 'HEAD'},
            ],
            deprecated_rule=deprecated_list_roles_for_trust,
        ),
        policy.DocumentedRuleDefault(
            name=base.IDENTITY % 'get_role_for_trust',
            check_str=ADMIN_OR_SYSTEM_READER_OR_TRUSTOR_OR_TRUSTEE,
            scope_types=['system', 'project'],
            description='Check if trust delegates a particular role.',
            operations=[
                {
                    'path': '/v3/OS-TRUST/trusts/{trust_id}/roles/{role_id}',
                    'method': 'GET',
                },
                {
                    'path': '/v3/OS-TRUST/trusts/{trust_id}/roles/{role_id}',
                    'method': 'HEAD',
                },
            ],
            deprecated_rule=deprecated_get_role_for_trust,
        ),
        policy.DocumentedRuleDefault(
            name=base.IDENTITY % 'delete_trust',
            check_str=ADMIN_OR_TRUSTOR,
            scope_types=['system', 'project'],
            description='Revoke trust.',
            operations=[
                {'path': '/v3/OS-TRUST/trusts/{trust_id}', 'method': 'DELETE'}
            ],
            deprecated_rule=deprecated_delete_trust,
        ),
        policy.DocumentedRuleDefault(
            name=base.IDENTITY % 'get_trust',
            check_str=ADMIN_OR_SYSTEM_READER_OR_TRUSTOR_OR_TRUSTEE,
            scope_types=['system', 'project'],
            description='Get trust.',
            operations=[
                {'path': '/v3/OS-TRUST/trusts/{trust_id}', 'method': 'GET'},
                {'path': '/v3/OS-TRUST/trusts/{trust_id}', 'method': 'HEAD'},
            ],
            deprecated_rule=deprecated_get_trust,
        ),
    ]

    def list_rules():
        return trust_policies

this page last updated: 2026-08-17 12:45:24

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