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# Copyright (c) 2010-2012 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 unittest
from swift.common.swob import Request, Response
from swift.common.middleware import gatekeeper
class FakeApp(object):
def __init__(self, headers=None):
if headers is None:
headers = {}
self.headers = headers
self.req = None
def __call__(self, env, start_response):
self.req = Request(env)
return Response(request=self.req, body='FAKE APP',
headers=self.headers)(env, start_response)
class FakeMiddleware(object):
def __init__(self, app, conf, header_list=None):
self.app = app
self.conf = conf
self.header_list = header_list
def __call__(self, env, start_response):
def fake_resp(status, response_headers, exc_info=None):
for i in self.header_list:
response_headers.append(i)
return start_response(status, response_headers, exc_info)
return self.app(env, fake_resp)
class TestGatekeeper(unittest.TestCase):
methods = ['PUT', 'POST', 'GET', 'DELETE', 'HEAD', 'COPY', 'OPTIONS']
allowed_headers = {'xx-account-sysmeta-foo': 'value',
'xx-container-sysmeta-foo': 'value',
'xx-object-sysmeta-foo': 'value',
'x-account-meta-foo': 'value',
'x-container-meta-foo': 'value',
'x-object-meta-foo': 'value',
'x-timestamp-foo': 'value'}
sysmeta_headers = {'x-account-sysmeta-': 'value',
'x-container-sysmeta-': 'value',
'x-object-sysmeta-': 'value',
'x-account-sysmeta-foo': 'value',
'x-container-sysmeta-foo': 'value',
'x-object-sysmeta-foo': 'value',
'X-Account-Sysmeta-BAR': 'value',
'X-Container-Sysmeta-BAR': 'value',
'X-Object-Sysmeta-BAR': 'value'}
x_backend_headers = {'X-Backend-Replication': 'true',
'X-Backend-Replication-Headers': 'stuff'}
forbidden_headers_out = dict(sysmeta_headers.items() +
x_backend_headers.items())
forbidden_headers_in = dict(sysmeta_headers.items() +
x_backend_headers.items())
def _assertHeadersEqual(self, expected, actual):
for key in expected:
self.assertTrue(key.lower() in actual,
'%s missing from %s' % (key, actual))
def _assertHeadersAbsent(self, unexpected, actual):
for key in unexpected:
self.assertTrue(key.lower() not in actual,
'%s is in %s' % (key, actual))
def get_app(self, app, global_conf, **local_conf):
factory = gatekeeper.filter_factory(global_conf, **local_conf)
return factory(app)
def test_ok_header(self):
req = Request.blank('/v/a/c', environ={'REQUEST_METHOD': 'PUT'},
headers=self.allowed_headers)
fake_app = FakeApp()
app = self.get_app(fake_app, {})
resp = req.get_response(app)
self.assertEquals('200 OK', resp.status)
self.assertEquals(resp.body, 'FAKE APP')
self._assertHeadersEqual(self.allowed_headers, fake_app.req.headers)
def _test_reserved_header_removed_inbound(self, method):
headers = dict(self.forbidden_headers_in)
headers.update(self.allowed_headers)
req = Request.blank('/v/a/c', environ={'REQUEST_METHOD': method},
headers=headers)
fake_app = FakeApp()
app = self.get_app(fake_app, {})
resp = req.get_response(app)
self.assertEquals('200 OK', resp.status)
self._assertHeadersEqual(self.allowed_headers, fake_app.req.headers)
self._assertHeadersAbsent(self.forbidden_headers_in,
fake_app.req.headers)
def test_reserved_header_removed_inbound(self):
for method in self.methods:
self._test_reserved_header_removed_inbound(method)
def _test_reserved_header_removed_outbound(self, method):
headers = dict(self.forbidden_headers_out)
headers.update(self.allowed_headers)
req = Request.blank('/v/a/c', environ={'REQUEST_METHOD': method})
fake_app = FakeApp(headers=headers)
app = self.get_app(fake_app, {})
resp = req.get_response(app)
self.assertEquals('200 OK', resp.status)
self._assertHeadersEqual(self.allowed_headers, resp.headers)
self._assertHeadersAbsent(self.forbidden_headers_out, resp.headers)
def test_reserved_header_removed_outbound(self):
for method in self.methods:
self._test_reserved_header_removed_outbound(method)
def _test_duplicate_headers_not_removed(self, method, app_hdrs):
def fake_factory(global_conf, **local_conf):
conf = global_conf.copy()
conf.update(local_conf)
headers = [('X-Header', 'xxx'),
('X-Header', 'yyy')]
def fake_filter(app):
return FakeMiddleware(app, conf, headers)
return fake_filter
def fake_start_response(status, response_headers, exc_info=None):
hdr_list = []
for k, v in response_headers:
if k == 'X-Header':
hdr_list.append(v)
self.assertTrue('xxx' in hdr_list)
self.assertTrue('yyy' in hdr_list)
self.assertEqual(len(hdr_list), 2)
req = Request.blank('/v/a/c', environ={'REQUEST_METHOD': method})
fake_app = FakeApp(headers=app_hdrs)
factory = gatekeeper.filter_factory({})
factory_wrap = fake_factory({})
app = factory(factory_wrap(fake_app))
app(req.environ, fake_start_response)
def test_duplicate_headers_not_removed(self):
for method in self.methods:
for app_hdrs in ({}, self.forbidden_headers_out):
self._test_duplicate_headers_not_removed(method, app_hdrs)
if __name__ == '__main__':
unittest.main()
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