OpenStack Orchestration (Heat)
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heat/heat/api/middleware/ssl.py

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1.7 KiB

#
# 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 oslo_config import cfg
from heat.common import wsgi
ssl_middleware_opts = [
cfg.StrOpt('secure_proxy_ssl_header',
default='X-Forwarded-Proto',
help="The HTTP Header that will be used to determine which "
"the original request protocol scheme was, even if it was "
"removed by an SSL terminator proxy.")
]
cfg.CONF.register_opts(ssl_middleware_opts)
class SSLMiddleware(wsgi.Middleware):
"""A middleware that replaces the request wsgi.url_scheme environment
variable with the value of HTTP header configured in
secure_proxy_ssl_header if exists in the incoming request.
This is useful if the server is behind a SSL termination proxy.
"""
def __init__(self, application):
super(SSLMiddleware, self).__init__(application)
self.secure_proxy_ssl_header = 'HTTP_{0}'.format(
cfg.CONF.secure_proxy_ssl_header.upper().replace('-', '_'))
def process_request(self, req):
req.environ['wsgi.url_scheme'] = req.environ.get(
self.secure_proxy_ssl_header, req.environ['wsgi.url_scheme'])
def list_opts():
yield None, ssl_middleware_opts