django-cas-server/cas_server/tests/test_federate.py

361 lines
16 KiB
Python

# -*- coding: utf-8 -*-
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License version 3 for
# more details.
#
# You should have received a copy of the GNU General Public License version 3
# along with this program; if not, write to the Free Software Foundation, Inc., 51
# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# (c) 2016 Valentin Samir
"""tests for the CAS federate mode"""
from cas_server import default_settings
from cas_server.default_settings import settings
import django
from django.test import TestCase, Client
from django.test.utils import override_settings
from six.moves import reload_module
from cas_server import utils, models
from cas_server.tests.mixin import BaseServicePattern, CanLogin, FederatedIendityProviderModel
from cas_server.tests import utils as tests_utils
PROVIDERS = {
"example.com": ("http://127.0.0.1:8080", '1', "Example dot com"),
"example.org": ("http://127.0.0.1:8081", '2', "Example dot org"),
"example.net": ("http://127.0.0.1:8082", '3', "Example dot net"),
"example.test": ("http://127.0.0.1:8083", 'CAS_2_SAML_1_0', 'Example fot test'),
}
@override_settings(
CAS_FEDERATE=True,
CAS_AUTH_CLASS="cas_server.auth.CASFederateAuth",
# test with a non ascii username
CAS_TEST_USER=u"dédé"
)
class FederateAuthLoginLogoutTestCase(
TestCase, BaseServicePattern, CanLogin, FederatedIendityProviderModel
):
"""tests for the views login logout and federate then the federated mode is enabled"""
def setUp(self):
"""Prepare the test context"""
self.setup_service_patterns()
self.setup_federated_identity_provider(PROVIDERS)
def test_default_settings(self):
"""default settings should populated some default variable then CAS_FEDERATE is True"""
del settings.CAS_AUTH_CLASS
reload_module(default_settings)
self.assertEqual(settings.CAS_AUTH_CLASS, "cas_server.auth.CASFederateAuth")
def test_login_get_provider(self):
"""some assertion about the login page in federated mode"""
client = Client()
response = client.get("/login")
self.assertEqual(response.status_code, 200)
for provider in models.FederatedIendityProvider.objects.all():
self.assertTrue('<option value="%s">%s</option>' % (
provider.suffix,
provider.verbose_name
) in response.content.decode("utf-8"))
self.assertEqual(response.context['post_url'], '/federate')
def test_login_post_provider(self, remember=False):
"""test a successful login wrokflow"""
tickets = []
# choose the example.com provider
for (suffix, cas_port) in [
("example.com", 8080), ("example.org", 8081),
("example.net", 8082), ("example.test", 8083)
]:
provider = models.FederatedIendityProvider.objects.get(suffix=suffix)
# get a bare client
client = Client()
# fetch the login page
response = client.get("/login")
# in federated mode, we shoudl POST do /federate on the login page
self.assertEqual(response.context['post_url'], '/federate')
# get current form parameter
params = tests_utils.copy_form(response.context["form"])
params['provider'] = provider.suffix
if remember:
params['remember'] = 'on'
# post the choosed provider
response = client.post('/federate', params)
# we are redirected to the provider CAS client url
self.assertEqual(response.status_code, 302)
if remember:
self.assertEqual(response["Location"], '%s/federate/%s?remember=on' % (
'http://testserver' if django.VERSION < (1, 9) else "",
provider.suffix
))
else:
self.assertEqual(response["Location"], '%s/federate/%s' % (
'http://testserver' if django.VERSION < (1, 9) else "",
provider.suffix
))
# let's follow the redirect
response = client.get('/federate/%s' % provider.suffix)
# we are redirected to the provider CAS for authentication
self.assertEqual(response.status_code, 302)
self.assertEqual(
response["Location"],
"%s/login?service=http%%3A%%2F%%2Ftestserver%%2Ffederate%%2F%s" % (
provider.server_url,
provider.suffix
)
)
# let's generate a ticket
ticket = utils.gen_st()
# we lauch a dummy CAS server that only validate once for the service
# http://testserver/federate/example.com with `ticket`
tests_utils.DummyCAS.run(
("http://testserver/federate/%s" % provider.suffix).encode("ascii"),
ticket.encode("ascii"),
settings.CAS_TEST_USER.encode("utf8"),
[],
cas_port
)
# we normally provide a good ticket and should be redirected to /login as the ticket
# get successfully validated again the dummy CAS
response = client.get('/federate/%s' % provider.suffix, {'ticket': ticket})
self.assertEqual(response.status_code, 302)
self.assertEqual(response["Location"], "%s/login" % (
'http://testserver' if django.VERSION < (1, 9) else ""
))
# follow the redirect
response = client.get("/login")
# we should get a page with a from with all widget hidden that auto POST to /login using
# javascript. If javascript is disabled, a "connect" button is showed
self.assertTrue(response.context['auto_submit'])
self.assertEqual(response.context['post_url'], '/login')
params = tests_utils.copy_form(response.context["form"])
# POST ge prefiled from parameters
response = client.post("/login", params)
# the user should now being authenticated using username test@`provider`
self.assert_logged(
client, response, username=provider.build_username(settings.CAS_TEST_USER)
)
tickets.append((provider, ticket, client))
# try to get a ticket
response = client.get("/login", {'service': self.service})
self.assertEqual(response.status_code, 302)
self.assertTrue(response["Location"].startswith("%s?ticket=" % self.service))
return tickets
def test_login_twice(self):
"""Test that user id db is used for the second login (cf coverage)"""
self.test_login_post_provider()
self.test_login_post_provider()
@override_settings(CAS_FEDERATE=False)
def test_auth_federate_false(self):
"""federated view should redirect to /login then CAS_FEDERATE is False"""
provider = "example.com"
client = Client()
response = client.get("/federate/%s" % provider)
self.assertEqual(response.status_code, 302)
self.assertEqual(response["Location"], "%s/login" % (
'http://testserver' if django.VERSION < (1, 9) else ""
))
response = client.post("%s/federate/%s" % (
'http://testserver' if django.VERSION < (1, 9) else "",
provider
))
self.assertEqual(response.status_code, 302)
self.assertEqual(response["Location"], "%s/login" % (
'http://testserver' if django.VERSION < (1, 9) else ""
))
def test_auth_federate_errors(self):
"""
The federated view should redirect to /login if the provider is unknown or not provided,
try to fetch a new ticket if the provided ticket validation fail
(network error or bad ticket)
"""
good_provider = "example.com"
bad_provider = "exemple.fr"
client = Client()
response = client.get("/federate/%s" % bad_provider)
self.assertEqual(response.status_code, 302)
self.assertEqual(response["Location"], "%s/login" % (
'http://testserver' if django.VERSION < (1, 9) else ""
))
# test CAS not avaible
response = client.get("/federate/%s" % good_provider, {'ticket': utils.gen_st()})
self.assertEqual(response.status_code, 302)
self.assertEqual(
response["Location"],
"%s/login?service=http%%3A%%2F%%2Ftestserver%%2Ffederate%%2F%s" % (
models.FederatedIendityProvider.objects.get(suffix=good_provider).server_url,
good_provider
)
)
# test CAS avaible but bad ticket
tests_utils.DummyCAS.run(
("http://testserver/federate/%s" % good_provider).encode("ascii"),
utils.gen_st().encode("ascii"),
settings.CAS_TEST_USER.encode("utf-8"),
[],
8080
)
response = client.get("/federate/%s" % good_provider, {'ticket': utils.gen_st()})
self.assertEqual(response.status_code, 302)
self.assertEqual(
response["Location"],
"%s/login?service=http%%3A%%2F%%2Ftestserver%%2Ffederate%%2F%s" % (
models.FederatedIendityProvider.objects.get(suffix=good_provider).server_url,
good_provider
)
)
response = client.post("/federate")
self.assertEqual(response.status_code, 302)
self.assertEqual(response["Location"], "%s/login" % (
'http://testserver' if django.VERSION < (1, 9) else ""
))
def test_auth_federate_slo(self):
"""test that SLO receive from backend CAS log out the users"""
# get tickets and connected clients
tickets = self.test_login_post_provider()
for (provider, ticket, client) in tickets:
# SLO for an unkown ticket should do nothing
response = client.post(
"/federate/%s" % provider.suffix,
{'logoutRequest': tests_utils.logout_request(utils.gen_st())}
)
self.assertEqual(response.status_code, 200)
self.assertEqual(response.content, b"ok")
# Bad SLO format should do nothing
response = client.post(
"/federate/%s" % provider.suffix,
{'logoutRequest': ""}
)
self.assertEqual(response.status_code, 200)
self.assertEqual(response.content, b"ok")
# Bad SLO format should do nothing
response = client.post(
"/federate/%s" % provider.suffix,
{'logoutRequest': "<root></root>"}
)
self.assertEqual(response.status_code, 200)
self.assertEqual(response.content, b"ok")
response = client.get("/login")
self.assert_logged(
client, response, username=provider.build_username(settings.CAS_TEST_USER)
)
# SLO for a previously logged ticket should log out the user if CAS version is
# 3 or 'CAS_2_SAML_1_0'
response = client.post(
"/federate/%s" % provider.suffix,
{'logoutRequest': tests_utils.logout_request(ticket)}
)
self.assertEqual(response.status_code, 200)
self.assertEqual(response.content, b"ok")
response = client.get("/login")
if provider.cas_protocol_version in {'3', 'CAS_2_SAML_1_0'}: # support SLO
self.assert_login_failed(client, response)
else:
self.assert_logged(
client, response, username=provider.build_username(settings.CAS_TEST_USER)
)
def test_federate_logout(self):
"""
test the logout function: the user should be log out
and redirected to his CAS logout page
"""
# get tickets and connected clients, then follow normal logout
tickets = self.test_login_post_provider()
for (provider, _, client) in tickets:
response = client.get("/logout")
self.assertEqual(response.status_code, 302)
self.assertEqual(
response["Location"],
"%s/logout" % provider.server_url,
)
response = client.get("/login")
self.assert_login_failed(client, response)
# test if the user is already logged out
response = client.get("/logout")
# no redirection
self.assertEqual(response.status_code, 200)
self.assertTrue(
(
b"You were already logged out from the Central Authentication Service."
) in response.content
)
tickets = self.test_login_post_provider()
if django.VERSION >= (1, 8):
# assume the username session variable has been tempered (should not happend)
for (provider, _, client) in tickets:
session = client.session
session["username"] = settings.CAS_TEST_USER
session.save()
response = client.get("/logout")
self.assertEqual(response.status_code, 200)
response = client.get("/login")
self.assert_login_failed(client, response)
def test_remember_provider(self):
"""
If the user check remember, next login should not offer the chose of the backend CAS
and use the one store in the cookie
"""
tickets = self.test_login_post_provider(remember=True)
for (provider, _, client) in tickets:
client.get("/logout")
response = client.get("/login")
self.assertEqual(response.status_code, 302)
self.assertEqual(response["Location"], "%s/federate/%s" % (
'http://testserver' if django.VERSION < (1, 9) else "",
provider.suffix
))
def test_login_bad_ticket(self):
"""
Try login with a bad ticket:
login should fail and the main login page should be displayed to the user
"""
provider = "example.com"
# get a bare client
client = Client()
session = client.session
session["federate_username"] = models.FederatedIendityProvider.build_username_from_suffix(
settings.CAS_TEST_USER,
provider
)
session["federate_ticket"] = utils.gen_st()
if django.VERSION >= (1, 8):
session.save()
response = client.get("/login")
# we should get a page with a from with all widget hidden that auto POST to /login using
# javascript. If javascript is disabled, a "connect" button is showed
self.assertTrue(response.context['auto_submit'])
self.assertEqual(response.context['post_url'], '/login')
params = tests_utils.copy_form(response.context["form"])
# POST, as (username, ticket) are not valid, we should get the federate login page
response = client.post("/login", params)
self.assertEqual(response.status_code, 200)
for provider in models.FederatedIendityProvider.objects.all():
self.assertIn(
'<option value="%s">%s</option>' % (
provider.suffix,
provider.verbose_name
),
response.content.decode("utf-8")
)
self.assertEqual(response.context['post_url'], '/federate')