181 lines
7.0 KiB
Python
181 lines
7.0 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import functools
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import copy
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from oslo_context import context
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from oslo_utils import timeutils
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import six
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from zun.common import exception
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from zun.common import policy
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class RequestContext(context.RequestContext):
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"""Extends security contexts from the OpenStack common library."""
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def __init__(self, auth_token=None, domain_id=None,
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domain_name=None, user_name=None, user_id=None,
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user_domain_name=None, user_domain_id=None,
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project_name=None, project_id=None, roles=None,
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is_admin=None, read_only=False, show_deleted=False,
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request_id=None, trust_id=None, auth_token_info=None,
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all_projects=False, password=None, timestamp=None, **kwargs):
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"""Stores several additional request parameters:
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:param domain_id: The ID of the domain.
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:param domain_name: The name of the domain.
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:param user_domain_id: The ID of the domain to
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authenticate a user against.
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:param user_domain_name: The name of the domain to
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authenticate a user against.
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"""
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super(RequestContext, self).__init__(auth_token=auth_token,
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user_id=user_name,
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project_id=project_name,
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is_admin=is_admin,
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read_only=read_only,
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show_deleted=show_deleted,
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request_id=request_id,
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roles=roles)
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self.user_name = user_name
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self.user_id = user_id
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self.project_name = project_name
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self.project_id = project_id
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self.domain_id = domain_id
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self.domain_name = domain_name
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self.user_domain_id = user_domain_id
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self.user_domain_name = user_domain_name
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self.auth_token_info = auth_token_info
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self.trust_id = trust_id
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self.all_projects = all_projects
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self.password = password
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if is_admin is None:
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self.is_admin = policy.check_is_admin(self)
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else:
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self.is_admin = is_admin
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if not timestamp:
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timestamp = timeutils.utcnow()
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if isinstance(timestamp, six.string_types):
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timestamp = timeutils.parse_strtime(timestamp)
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self.timestamp = timestamp
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def to_dict(self):
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value = super(RequestContext, self).to_dict()
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value.update({'auth_token': self.auth_token,
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'domain_id': self.domain_id,
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'domain_name': self.domain_name,
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'user_domain_id': self.user_domain_id,
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'user_domain_name': self.user_domain_name,
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'user_name': self.user_name,
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'user_id': self.user_id,
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'project_name': self.project_name,
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'project_id': self.project_id,
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'is_admin': self.is_admin,
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'read_only': self.read_only,
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'roles': self.roles,
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'show_deleted': self.show_deleted,
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'request_id': self.request_id,
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'trust_id': self.trust_id,
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'auth_token_info': self.auth_token_info,
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'password': self.password,
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'all_projects': self.all_projects,
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'timestamp': timeutils.strtime(self.timestamp) if
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hasattr(self, 'timestamp') else None
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})
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return value
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def to_policy_values(self):
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policy = super(RequestContext, self).to_policy_values()
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policy['is_admin'] = self.is_admin
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return policy
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@classmethod
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def from_dict(cls, values):
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return cls(**values)
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def elevated(self):
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"""Return a version of this context with admin flag set."""
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context = copy.copy(self)
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# context.roles must be deepcopied to leave original roles
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# without changes
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context.roles = copy.deepcopy(self.roles)
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context.is_admin = True
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if 'admin' not in context.roles:
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context.roles.append('admin')
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return context
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def can(self, action, target=None, fatal=True, might_not_exist=False):
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"""Verifies that the given action is valid on the target in this context.
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:param action: string representing the action to be checked.
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:param target: dictionary representing the object of the action
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for object creation this should be a dictionary representing the
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location of the object e.g. ``{'project_id': context.project_id}``.
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If None, then this default target will be considered:
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{'project_id': self.project_id, 'user_id': self.user_id}
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:param fatal: if False, will return False when an
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exception.NotAuthorized occurs.
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:param might_not_exist: If True the policy check is skipped (and the
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function returns True) if the specified policy does not exist.
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Defaults to false.
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:raises zun.common.exception.NotAuthorized: if verification fails and
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fatal is True.
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:return: returns a non-False value (not necessarily "True") if
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authorized and False if not authorized and fatal is False.
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"""
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if target is None:
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target = {'project_id': self.project_id,
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'user_id': self.user_id}
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try:
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return policy.authorize(self, action, target,
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might_not_exist=might_not_exist)
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except exception.NotAuthorized:
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if fatal:
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raise
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return False
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def make_context(*args, **kwargs):
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return RequestContext(*args, **kwargs)
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def get_admin_context(show_deleted=False, all_projects=False):
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"""Create an administrator context.
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:param show_deleted: if True, will show deleted items when query db
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"""
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context = RequestContext(user_id=None,
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project=None,
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is_admin=True,
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show_deleted=show_deleted,
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all_projects=all_projects)
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return context
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def set_context(func):
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@functools.wraps(func)
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def handler(self, ctx):
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if ctx is None:
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ctx = get_admin_context(all_projects=True)
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func(self, ctx)
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return handler
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