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# 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 debtcollector import removals
from oslo_config import cfg
from oslo_middleware import base
OPTS = [
cfg.StrOpt('secure_proxy_ssl_header',
default='X-Forwarded-Proto',
deprecated_for_removal=True,
help="The HTTP Header that will be used to determine what "
"the original request protocol scheme was, even if it was "
"hidden by a SSL termination proxy.")
]
class SSLMiddleware(base.ConfigurableMiddleware):
"""SSL termination proxies middleware.
This middleware overloads wsgi.url_scheme with the one provided in
secure_proxy_ssl_header header. This is useful when behind a SSL
termination proxy.
"""
def __init__(self, application, *args, **kwargs):
removals.removed_module(__name__, "oslo_middleware.http_proxy_to_wsgi")
super(SSLMiddleware, self).__init__(application, *args, **kwargs)
self.oslo_conf.register_opts(OPTS, group='oslo_middleware')
def process_request(self, req):
self.header_name = 'HTTP_{0}'.format(
self._conf_get('secure_proxy_ssl_header').upper()
.replace('-', '_'))
req.environ['wsgi.url_scheme'] = req.environ.get(
self.header_name, req.environ['wsgi.url_scheme'])
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