68 lines
2.3 KiB
Python
68 lines
2.3 KiB
Python
#
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# 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 six
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from webob import exc
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from oslo_utils import timeutils
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def policy_enforce(handler):
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"""Decorator that enforces policies.
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Checks the path matches the request context and enforce policy defined in
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policy.json.
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This is a handler method decorator.
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"""
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@functools.wraps(handler)
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def handle_bilean_method(controller, req, tenant_id, **kwargs):
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if req.context.tenant_id != tenant_id:
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raise exc.HTTPForbidden()
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allowed = req.context.policy.enforce(context=req.context,
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action=handler.__name__,
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scope=controller.REQUEST_SCOPE)
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if not allowed:
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raise exc.HTTPForbidden()
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return handler(controller, req, **kwargs)
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return handle_bilean_method
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def get_allowed_params(params, whitelist):
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"""Extract from ``params`` all entries listed in ``whitelist``.
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The returning dict will contain an entry for a key if, and only if,
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there's an entry in ``whitelist`` for that key and at least one entry in
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``params``. If ``params`` contains multiple entries for the same key, it
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will yield an array of values: ``{key: [v1, v2,...]}``
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:param params: a NestedMultiDict from webob.Request.params
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:param whitelist: an array of strings to whitelist
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:returns: a dict with {key: value} pairs
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"""
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allowed_params = {}
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for key, key_type in six.iteritems(whitelist):
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value = params.get(key)
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if value:
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if key_type == 'timestamp':
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value = timeutils.parse_isotime(value)
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value = value.replace(tzinfo=None)
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allowed_params[key] = value
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return allowed_params
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