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# Copyright (c) 2015 Red Hat, Inc.
#
# 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 wsgiref import util
from oslotest import base as test_base
import webob
from oslo_middleware import http_proxy_to_wsgi
class TestHTTPProxyToWSGI(test_base.BaseTestCase):
def setUp(self):
super(TestHTTPProxyToWSGI, self).setUp()
@webob.dec.wsgify()
def fake_app(req):
return util.application_uri(req.environ)
self.middleware = http_proxy_to_wsgi.HTTPProxyToWSGI(fake_app)
self.middleware.oslo_conf.set_override('enable_proxy_headers_parsing',
True,
group='oslo_middleware')
self.request = webob.Request.blank('/foo/bar', method='POST')
def test_backward_compat(self):
@webob.dec.wsgify()
def fake_app(req):
return util.application_uri(req.environ)
self.middleware = http_proxy_to_wsgi.HTTPProxyToWSGIMiddleware(
fake_app)
response = self.request.get_response(self.middleware)
self.assertEqual(b"http://localhost:80/", response.body)
def test_no_headers(self):
response = self.request.get_response(self.middleware)
self.assertEqual(b"http://localhost:80/", response.body)
def test_url_translate_ssl(self):
self.request.headers['X-Forwarded-Proto'] = "https"
response = self.request.get_response(self.middleware)
self.assertEqual(b"https://localhost:80/", response.body)
def test_url_translate_ssl_port(self):
self.request.headers['X-Forwarded-Proto'] = "https"
self.request.headers['X-Forwarded-Host'] = "example.com:123"
response = self.request.get_response(self.middleware)
self.assertEqual(b"https://example.com:123/", response.body)
def test_url_translate_host_ipv6(self):
self.request.headers['X-Forwarded-Proto'] = "https"
self.request.headers['X-Forwarded-Host'] = "[f00:b4d::1]:123"
response = self.request.get_response(self.middleware)
self.assertEqual(b"https://[f00:b4d::1]:123/", response.body)
def test_url_translate_base(self):
self.request.headers['X-Forwarded-Prefix'] = "/bla"
response = self.request.get_response(self.middleware)
self.assertEqual(b"http://localhost:80/bla", response.body)
def test_url_translate_port_and_base_and_proto_and_host(self):
self.request.headers['X-Forwarded-Proto'] = "https"
self.request.headers['X-Forwarded-Prefix'] = "/bla"
self.request.headers['X-Forwarded-Host'] = "example.com:8043"
response = self.request.get_response(self.middleware)
self.assertEqual(b"https://example.com:8043/bla", response.body)
def test_rfc7239_invalid(self):
self.request.headers['Forwarded'] = (
"iam=anattacker;metoo, I will crash you!!P;m,xx")
response = self.request.get_response(self.middleware)
self.assertEqual(b"http://localhost:80/", response.body)
def test_rfc7239_proto(self):
self.request.headers['Forwarded'] = (
"for=foobar;proto=https, for=foobaz;proto=http")
response = self.request.get_response(self.middleware)
self.assertEqual(b"https://localhost:80/", response.body)
def test_rfc7239_proto_host(self):
self.request.headers['Forwarded'] = (
"for=foobar;proto=https;host=example.com, for=foobaz;proto=http")
response = self.request.get_response(self.middleware)
self.assertEqual(b"https://example.com/", response.body)
def test_rfc7239_proto_host_base(self):
self.request.headers['Forwarded'] = (
"for=foobar;proto=https;host=example.com:8043, for=foobaz")
self.request.headers['X-Forwarded-Prefix'] = "/bla"
response = self.request.get_response(self.middleware)
self.assertEqual(b"https://example.com:8043/bla", response.body)
def test_forwarded_for_headers(self):
@webob.dec.wsgify()
def fake_app(req):
return req.environ['REMOTE_ADDR']
self.middleware = http_proxy_to_wsgi.HTTPProxyToWSGIMiddleware(
fake_app)
forwarded_for_addr = '1.2.3.4'
forwarded_addr = '8.8.8.8'
# If both X-Forwarded-For and Fowarded headers are present, it should
# use the Forwarded header and ignore the X-Forwarded-For header.
self.request.headers['Forwarded'] = (
"for=%s;proto=https;host=example.com:8043" % (forwarded_addr))
self.request.headers['X-Forwarded-For'] = forwarded_for_addr
response = self.request.get_response(self.middleware)
self.assertEqual(forwarded_addr.encode(), response.body)
# Now if only X-Forwarded-For header is present, it should be used.
del self.request.headers['Forwarded']
response = self.request.get_response(self.middleware)
self.assertEqual(forwarded_for_addr.encode(), response.body)
class TestHTTPProxyToWSGIDisabled(test_base.BaseTestCase):
def setUp(self):
super(TestHTTPProxyToWSGIDisabled, self).setUp()
@webob.dec.wsgify()
def fake_app(req):
return util.application_uri(req.environ)
self.middleware = http_proxy_to_wsgi.HTTPProxyToWSGI(fake_app)
self.middleware.oslo_conf.set_override('enable_proxy_headers_parsing',
False,
group='oslo_middleware')
self.request = webob.Request.blank('/foo/bar', method='POST')
def test_no_headers(self):
response = self.request.get_response(self.middleware)
self.assertEqual(b"http://localhost:80/", response.body)
def test_url_translate_ssl_has_no_effect(self):
self.request.headers['X-Forwarded-Proto'] = "https"
self.request.headers['X-Forwarded-Host'] = "example.com:123"
response = self.request.get_response(self.middleware)
self.assertEqual(b"http://localhost:80/", response.body)
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