89 lines
3.3 KiB
Python
89 lines
3.3 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 OpenStack Foundation
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# All Rights Reserved.
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#
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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 re
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import webob.exc
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import wsgi
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from trove.common import exception
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from trove.openstack.common import log as logging
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from trove.openstack.common.gettextutils import _
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LOG = logging.getLogger(__name__)
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class AuthorizationMiddleware(wsgi.Middleware):
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def __init__(self, application, auth_providers, **local_config):
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self.auth_providers = auth_providers
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LOG.debug(_("Auth middleware providers: %s") % auth_providers)
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super(AuthorizationMiddleware, self).__init__(application,
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**local_config)
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def process_request(self, request):
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roles = request.headers.get('X_ROLE', '').split(',')
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LOG.debug(_("Processing auth request with roles: %s") % roles)
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tenant_id = request.headers.get('X-Tenant-Id', None)
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LOG.debug(_("Processing auth request with tenant_id: %s") % tenant_id)
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for provider in self.auth_providers:
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provider.authorize(request, tenant_id, roles)
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@classmethod
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def factory(cls, global_config, **local_config):
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def _factory(app):
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LOG.debug(_("Created auth middleware with config: %s") %
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local_config)
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return cls(app, [TenantBasedAuth()], **local_config)
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return _factory
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class TenantBasedAuth(object):
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# The paths differ from melange, so the regex must differ as well,
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# trove starts with a tenant_id
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tenant_scoped_url = re.compile("/(?P<tenant_id>.*?)/.*")
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def authorize(self, request, tenant_id, roles):
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match_for_tenant = self.tenant_scoped_url.match(request.path_info)
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if (match_for_tenant and
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tenant_id == match_for_tenant.group('tenant_id')):
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LOG.debug(_("Authorized tenant '%(tenant_id)s' request: "
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"%(request)s") %
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{'tenant_id': tenant_id, 'request': request})
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return True
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msg = _("User with tenant id %s cannot access this resource")
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LOG.debug(msg % tenant_id)
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raise webob.exc.HTTPForbidden(msg)
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def admin_context(f):
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"""
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Verify that the current context has administrative access,
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or throw an exception. Trove API functions typically take the form
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function(self, req), or function(self, req, id).
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"""
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def wrapper(*args, **kwargs):
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try:
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req = args[1]
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context = req.environ.get('trove.context')
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except Exception:
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raise exception.TroveError("Cannot load request context.")
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if not context.is_admin:
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raise exception.Forbidden("User does not have admin privileges.")
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return f(*args, **kwargs)
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return wrapper
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