forked from openstack-archive/deb-python-requests-kerberos
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test_requests_kerberos.py
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test_requests_kerberos.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""Tests for requests_kerberos."""
from mock import Mock, patch
from requests.compat import urlparse
import requests
try:
import kerberos
kerberos_module_name='kerberos'
except ImportError:
import winkerberos as kerberos # On Windows
kerberos_module_name = 'winkerberos'
import requests_kerberos
import unittest
# kerberos.authClientInit() is called with the service name (HTTP@FQDN) and
# returns 1 and a kerberos context object on success. Returns -1 on failure.
clientInit_complete = Mock(return_value=(1, "CTX"))
clientInit_error = Mock(return_value=(-1, "CTX"))
# kerberos.authGSSClientStep() is called with the kerberos context object
# returned by authGSSClientInit and the negotiate auth token provided in the
# http response's www-authenticate header. It returns 0 or 1 on success. 0
# Indicates that authentication is progressing but not complete.
clientStep_complete = Mock(return_value=1)
clientStep_continue = Mock(return_value=0)
clientStep_error = Mock(return_value=-1)
clientStep_exception = Mock(side_effect=kerberos.GSSError)
# kerberos.authGSSCLientResponse() is called with the kerberos context which
# was initially returned by authGSSClientInit and had been mutated by a call by
# authGSSClientStep. It returns a string.
clientResponse = Mock(return_value="GSSRESPONSE")
# Note: we're not using the @mock.patch decorator:
# > My only word of warning is that in the past, the patch decorator hides
# > tests when using the standard unittest library.
# > -- sigmavirus24 in https://github.com/requests/requests-kerberos/issues/1
class KerberosTestCase(unittest.TestCase):
def setUp(self):
"""Setup."""
clientInit_complete.reset_mock()
clientInit_error.reset_mock()
clientStep_complete.reset_mock()
clientStep_continue.reset_mock()
clientStep_error.reset_mock()
clientStep_exception.reset_mock()
clientResponse.reset_mock()
def tearDown(self):
"""Teardown."""
pass
def test_negotate_value_extraction(self):
response = requests.Response()
response.headers = {'www-authenticate': 'negotiate token'}
self.assertEqual(
requests_kerberos.kerberos_._negotiate_value(response),
'token'
)
def test_negotate_value_extraction_none(self):
response = requests.Response()
response.headers = {}
self.assertTrue(
requests_kerberos.kerberos_._negotiate_value(response) is None
)
def test_force_preemptive(self):
with patch.multiple(kerberos_module_name,
authGSSClientInit=clientInit_complete,
authGSSClientResponse=clientResponse,
authGSSClientStep=clientStep_continue):
auth = requests_kerberos.HTTPKerberosAuth(force_preemptive=True)
request = requests.Request(url="http://www.example.org")
auth.__call__(request)
self.assertTrue('Authorization' in request.headers)
self.assertEqual(request.headers.get('Authorization'), 'Negotiate GSSRESPONSE')
def test_no_force_preemptive(self):
with patch.multiple(kerberos_module_name,
authGSSClientInit=clientInit_complete,
authGSSClientResponse=clientResponse,
authGSSClientStep=clientStep_continue):
auth = requests_kerberos.HTTPKerberosAuth()
request = requests.Request(url="http://www.example.org")
auth.__call__(request)
self.assertTrue('Authorization' not in request.headers)
def test_generate_request_header(self):
with patch.multiple(kerberos_module_name,
authGSSClientInit=clientInit_complete,
authGSSClientResponse=clientResponse,
authGSSClientStep=clientStep_continue):
response = requests.Response()
response.url = "http://www.example.org/"
response.headers = {'www-authenticate': 'negotiate token'}
host = urlparse(response.url).hostname
auth = requests_kerberos.HTTPKerberosAuth()
self.assertEqual(
auth.generate_request_header(response, host),
"Negotiate GSSRESPONSE"
)
clientInit_complete.assert_called_with(
"HTTP@www.example.org",
gssflags=(
kerberos.GSS_C_MUTUAL_FLAG |
kerberos.GSS_C_SEQUENCE_FLAG),
principal=None)
clientStep_continue.assert_called_with("CTX", "token")
clientResponse.assert_called_with("CTX")
def test_generate_request_header_init_error(self):
with patch.multiple(kerberos_module_name,
authGSSClientInit=clientInit_error,
authGSSClientResponse=clientResponse,
authGSSClientStep=clientStep_continue):
response = requests.Response()
response.url = "http://www.example.org/"
response.headers = {'www-authenticate': 'negotiate token'}
host = urlparse(response.url).hostname
auth = requests_kerberos.HTTPKerberosAuth()
self.assertRaises(requests_kerberos.exceptions.KerberosExchangeError,
auth.generate_request_header, response, host
)
clientInit_error.assert_called_with(
"HTTP@www.example.org",
gssflags=(
kerberos.GSS_C_MUTUAL_FLAG |
kerberos.GSS_C_SEQUENCE_FLAG),
principal=None)
self.assertFalse(clientStep_continue.called)
self.assertFalse(clientResponse.called)
def test_generate_request_header_step_error(self):
with patch.multiple(kerberos_module_name,
authGSSClientInit=clientInit_complete,
authGSSClientResponse=clientResponse,
authGSSClientStep=clientStep_error):
response = requests.Response()
response.url = "http://www.example.org/"
response.headers = {'www-authenticate': 'negotiate token'}
host = urlparse(response.url).hostname
auth = requests_kerberos.HTTPKerberosAuth()
self.assertRaises(requests_kerberos.exceptions.KerberosExchangeError,
auth.generate_request_header, response, host
)
clientInit_complete.assert_called_with(
"HTTP@www.example.org",
gssflags=(
kerberos.GSS_C_MUTUAL_FLAG |
kerberos.GSS_C_SEQUENCE_FLAG),
principal=None)
clientStep_error.assert_called_with("CTX", "token")
self.assertFalse(clientResponse.called)
def test_authenticate_user(self):
with patch.multiple(kerberos_module_name,
authGSSClientInit=clientInit_complete,
authGSSClientResponse=clientResponse,
authGSSClientStep=clientStep_continue):
response_ok = requests.Response()
response_ok.url = "http://www.example.org/"
response_ok.status_code = 200
response_ok.headers = {'www-authenticate': 'negotiate servertoken'}
connection = Mock()
connection.send = Mock(return_value=response_ok)
raw = Mock()
raw.release_conn = Mock(return_value=None)
request = requests.Request()
response = requests.Response()
response.request = request
response.url = "http://www.example.org/"
response.headers = {'www-authenticate': 'negotiate token'}
response.status_code = 401
response.connection = connection
response._content = ""
response.raw = raw
auth = requests_kerberos.HTTPKerberosAuth()
r = auth.authenticate_user(response)
self.assertTrue(response in r.history)
self.assertEqual(r, response_ok)
self.assertEqual(
request.headers['Authorization'],
'Negotiate GSSRESPONSE')
connection.send.assert_called_with(request)
raw.release_conn.assert_called_with()
clientInit_complete.assert_called_with(
"HTTP@www.example.org",
gssflags=(
kerberos.GSS_C_MUTUAL_FLAG |
kerberos.GSS_C_SEQUENCE_FLAG),
principal=None)
clientStep_continue.assert_called_with("CTX", "token")
clientResponse.assert_called_with("CTX")
def test_handle_401(self):
with patch.multiple(kerberos_module_name,
authGSSClientInit=clientInit_complete,
authGSSClientResponse=clientResponse,
authGSSClientStep=clientStep_continue):
response_ok = requests.Response()
response_ok.url = "http://www.example.org/"
response_ok.status_code = 200
response_ok.headers = {'www-authenticate': 'negotiate servertoken'}
connection = Mock()
connection.send = Mock(return_value=response_ok)
raw = Mock()
raw.release_conn = Mock(return_value=None)
request = requests.Request()
response = requests.Response()
response.request = request
response.url = "http://www.example.org/"
response.headers = {'www-authenticate': 'negotiate token'}
response.status_code = 401
response.connection = connection
response._content = ""
response.raw = raw
auth = requests_kerberos.HTTPKerberosAuth()
r = auth.handle_401(response)
self.assertTrue(response in r.history)
self.assertEqual(r, response_ok)
self.assertEqual(
request.headers['Authorization'],
'Negotiate GSSRESPONSE')
connection.send.assert_called_with(request)
raw.release_conn.assert_called_with()
clientInit_complete.assert_called_with(
"HTTP@www.example.org",
gssflags=(
kerberos.GSS_C_MUTUAL_FLAG |
kerberos.GSS_C_SEQUENCE_FLAG),
principal=None)
clientStep_continue.assert_called_with("CTX", "token")
clientResponse.assert_called_with("CTX")
def test_authenticate_server(self):
with patch.multiple(kerberos_module_name, authGSSClientStep=clientStep_complete):
response_ok = requests.Response()
response_ok.url = "http://www.example.org/"
response_ok.status_code = 200
response_ok.headers = {
'www-authenticate': 'negotiate servertoken',
'authorization': 'Negotiate GSSRESPONSE'}
auth = requests_kerberos.HTTPKerberosAuth()
auth.context = {"www.example.org": "CTX"}
result = auth.authenticate_server(response_ok)
self.assertTrue(result)
clientStep_complete.assert_called_with("CTX", "servertoken")
def test_handle_other(self):
with patch(kerberos_module_name+'.authGSSClientStep', clientStep_complete):
response_ok = requests.Response()
response_ok.url = "http://www.example.org/"
response_ok.status_code = 200
response_ok.headers = {
'www-authenticate': 'negotiate servertoken',
'authorization': 'Negotiate GSSRESPONSE'}
auth = requests_kerberos.HTTPKerberosAuth()
auth.context = {"www.example.org": "CTX"}
r = auth.handle_other(response_ok)
self.assertEqual(r, response_ok)
clientStep_complete.assert_called_with("CTX", "servertoken")
def test_handle_response_200(self):
with patch(kerberos_module_name+'.authGSSClientStep', clientStep_complete):
response_ok = requests.Response()
response_ok.url = "http://www.example.org/"
response_ok.status_code = 200
response_ok.headers = {
'www-authenticate': 'negotiate servertoken',
'authorization': 'Negotiate GSSRESPONSE'}
auth = requests_kerberos.HTTPKerberosAuth()
auth.context = {"www.example.org": "CTX"}
r = auth.handle_response(response_ok)
self.assertEqual(r, response_ok)
clientStep_complete.assert_called_with("CTX", "servertoken")
def test_handle_response_200_mutual_auth_required_failure(self):
with patch(kerberos_module_name+'.authGSSClientStep', clientStep_error):
response_ok = requests.Response()
response_ok.url = "http://www.example.org/"
response_ok.status_code = 200
response_ok.headers = {}
auth = requests_kerberos.HTTPKerberosAuth()
auth.context = {"www.example.org": "CTX"}
self.assertRaises(requests_kerberos.MutualAuthenticationError,
auth.handle_response,
response_ok)
self.assertFalse(clientStep_error.called)
def test_handle_response_200_mutual_auth_required_failure_2(self):
with patch(kerberos_module_name+'.authGSSClientStep', clientStep_exception):
response_ok = requests.Response()
response_ok.url = "http://www.example.org/"
response_ok.status_code = 200
response_ok.headers = {
'www-authenticate': 'negotiate servertoken',
'authorization': 'Negotiate GSSRESPONSE'}
auth = requests_kerberos.HTTPKerberosAuth()
auth.context = {"www.example.org": "CTX"}
self.assertRaises(requests_kerberos.MutualAuthenticationError,
auth.handle_response,
response_ok)
clientStep_exception.assert_called_with("CTX", "servertoken")
def test_handle_response_200_mutual_auth_optional_hard_failure(self):
with patch(kerberos_module_name+'.authGSSClientStep', clientStep_error):
response_ok = requests.Response()
response_ok.url = "http://www.example.org/"
response_ok.status_code = 200
response_ok.headers = {
'www-authenticate': 'negotiate servertoken',
'authorization': 'Negotiate GSSRESPONSE'}
auth = requests_kerberos.HTTPKerberosAuth(
requests_kerberos.OPTIONAL)
auth.context = {"www.example.org": "CTX"}
self.assertRaises(requests_kerberos.MutualAuthenticationError,
auth.handle_response,
response_ok)
clientStep_error.assert_called_with("CTX", "servertoken")
def test_handle_response_200_mutual_auth_optional_soft_failure(self):
with patch(kerberos_module_name+'.authGSSClientStep', clientStep_error):
response_ok = requests.Response()
response_ok.url = "http://www.example.org/"
response_ok.status_code = 200
auth = requests_kerberos.HTTPKerberosAuth(
requests_kerberos.OPTIONAL)
auth.context = {"www.example.org": "CTX"}
r = auth.handle_response(response_ok)
self.assertEqual(r, response_ok)
self.assertFalse(clientStep_error.called)
def test_handle_response_500_mutual_auth_required_failure(self):
with patch(kerberos_module_name+'.authGSSClientStep', clientStep_error):
response_500 = requests.Response()
response_500.url = "http://www.example.org/"
response_500.status_code = 500
response_500.headers = {}
response_500.request = "REQUEST"
response_500.connection = "CONNECTION"
response_500._content = "CONTENT"
response_500.encoding = "ENCODING"
response_500.raw = "RAW"
response_500.cookies = "COOKIES"
auth = requests_kerberos.HTTPKerberosAuth()
auth.context = {"www.example.org": "CTX"}
r = auth.handle_response(response_500)
self.assertTrue(isinstance(r, requests_kerberos.kerberos_.SanitizedResponse))
self.assertNotEqual(r, response_500)
self.assertNotEqual(r.headers, response_500.headers)
self.assertEqual(r.status_code, response_500.status_code)
self.assertEqual(r.encoding, response_500.encoding)
self.assertEqual(r.raw, response_500.raw)
self.assertEqual(r.url, response_500.url)
self.assertEqual(r.reason, response_500.reason)
self.assertEqual(r.connection, response_500.connection)
self.assertEqual(r.content, '')
self.assertNotEqual(r.cookies, response_500.cookies)
self.assertFalse(clientStep_error.called)
# re-test with error response sanitizing disabled
auth = requests_kerberos.HTTPKerberosAuth(sanitize_mutual_error_response=False)
auth.context = {"www.example.org": "CTX"}
r = auth.handle_response(response_500)
self.assertFalse(isinstance(r, requests_kerberos.kerberos_.SanitizedResponse))
def test_handle_response_500_mutual_auth_optional_failure(self):
with patch(kerberos_module_name+'.authGSSClientStep', clientStep_error):
response_500 = requests.Response()
response_500.url = "http://www.example.org/"
response_500.status_code = 500
response_500.headers = {}
response_500.request = "REQUEST"
response_500.connection = "CONNECTION"
response_500._content = "CONTENT"
response_500.encoding = "ENCODING"
response_500.raw = "RAW"
response_500.cookies = "COOKIES"
auth = requests_kerberos.HTTPKerberosAuth(
requests_kerberos.OPTIONAL)
auth.context = {"www.example.org": "CTX"}
r = auth.handle_response(response_500)
self.assertEqual(r, response_500)
self.assertFalse(clientStep_error.called)
def test_handle_response_401(self):
# Get a 401 from server, authenticate, and get a 200 back.
with patch.multiple(kerberos_module_name,
authGSSClientInit=clientInit_complete,
authGSSClientResponse=clientResponse,
authGSSClientStep=clientStep_continue):
response_ok = requests.Response()
response_ok.url = "http://www.example.org/"
response_ok.status_code = 200
response_ok.headers = {'www-authenticate': 'negotiate servertoken'}
connection = Mock()
connection.send = Mock(return_value=response_ok)
raw = Mock()
raw.release_conn = Mock(return_value=None)
request = requests.Request()
response = requests.Response()
response.request = request
response.url = "http://www.example.org/"
response.headers = {'www-authenticate': 'negotiate token'}
response.status_code = 401
response.connection = connection
response._content = ""
response.raw = raw
auth = requests_kerberos.HTTPKerberosAuth()
auth.handle_other = Mock(return_value=response_ok)
r = auth.handle_response(response)
self.assertTrue(response in r.history)
auth.handle_other.assert_called_once_with(response_ok)
self.assertEqual(r, response_ok)
self.assertEqual(
request.headers['Authorization'],
'Negotiate GSSRESPONSE')
connection.send.assert_called_with(request)
raw.release_conn.assert_called_with()
clientInit_complete.assert_called_with(
"HTTP@www.example.org",
gssflags=(
kerberos.GSS_C_MUTUAL_FLAG |
kerberos.GSS_C_SEQUENCE_FLAG),
principal=None)
clientStep_continue.assert_called_with("CTX", "token")
clientResponse.assert_called_with("CTX")
def test_handle_response_401_rejected(self):
# Get a 401 from server, authenticate, and get another 401 back.
# Ensure there is no infinite recursion.
with patch.multiple(kerberos_module_name,
authGSSClientInit=clientInit_complete,
authGSSClientResponse=clientResponse,
authGSSClientStep=clientStep_continue):
connection = Mock()
def connection_send(self, *args, **kwargs):
reject = requests.Response()
reject.url = "http://www.example.org/"
reject.status_code = 401
reject.connection = connection
return reject
connection.send.side_effect = connection_send
raw = Mock()
raw.release_conn.return_value = None
request = requests.Request()
response = requests.Response()
response.request = request
response.url = "http://www.example.org/"
response.headers = {'www-authenticate': 'negotiate token'}
response.status_code = 401
response.connection = connection
response._content = ""
response.raw = raw
auth = requests_kerberos.HTTPKerberosAuth()
r = auth.handle_response(response)
self.assertEqual(r.status_code, 401)
self.assertEqual(request.headers['Authorization'],
'Negotiate GSSRESPONSE')
connection.send.assert_called_with(request)
raw.release_conn.assert_called_with()
clientInit_complete.assert_called_with(
"HTTP@www.example.org",
gssflags=(
kerberos.GSS_C_MUTUAL_FLAG |
kerberos.GSS_C_SEQUENCE_FLAG),
principal=None)
clientStep_continue.assert_called_with("CTX", "token")
clientResponse.assert_called_with("CTX")
def test_generate_request_header_custom_service(self):
with patch.multiple(kerberos_module_name,
authGSSClientInit=clientInit_complete,
authGSSClientResponse=clientResponse,
authGSSClientStep=clientStep_continue):
response = requests.Response()
response.url = "http://www.example.org/"
response.headers = {'www-authenticate': 'negotiate token'}
host = urlparse(response.url).hostname
auth = requests_kerberos.HTTPKerberosAuth(service="barfoo")
auth.generate_request_header(response, host),
clientInit_complete.assert_called_with(
"barfoo@www.example.org",
gssflags=(
kerberos.GSS_C_MUTUAL_FLAG |
kerberos.GSS_C_SEQUENCE_FLAG),
principal=None)
def test_delegation(self):
with patch.multiple(kerberos_module_name,
authGSSClientInit=clientInit_complete,
authGSSClientResponse=clientResponse,
authGSSClientStep=clientStep_continue):
response_ok = requests.Response()
response_ok.url = "http://www.example.org/"
response_ok.status_code = 200
response_ok.headers = {'www-authenticate': 'negotiate servertoken'}
connection = Mock()
connection.send = Mock(return_value=response_ok)
raw = Mock()
raw.release_conn = Mock(return_value=None)
request = requests.Request()
response = requests.Response()
response.request = request
response.url = "http://www.example.org/"
response.headers = {'www-authenticate': 'negotiate token'}
response.status_code = 401
response.connection = connection
response._content = ""
response.raw = raw
auth = requests_kerberos.HTTPKerberosAuth(1, "HTTP", True)
r = auth.authenticate_user(response)
self.assertTrue(response in r.history)
self.assertEqual(r, response_ok)
self.assertEqual(
request.headers['Authorization'],
'Negotiate GSSRESPONSE')
connection.send.assert_called_with(request)
raw.release_conn.assert_called_with()
clientInit_complete.assert_called_with(
"HTTP@www.example.org",
gssflags=(
kerberos.GSS_C_MUTUAL_FLAG |
kerberos.GSS_C_SEQUENCE_FLAG |
kerberos.GSS_C_DELEG_FLAG),
principal=None
)
clientStep_continue.assert_called_with("CTX", "token")
clientResponse.assert_called_with("CTX")
def test_principal_override(self):
with patch.multiple(kerberos_module_name,
authGSSClientInit=clientInit_complete,
authGSSClientResponse=clientResponse,
authGSSClientStep=clientStep_continue):
response = requests.Response()
response.url = "http://www.example.org/"
response.headers = {'www-authenticate': 'negotiate token'}
host = urlparse(response.url).hostname
auth = requests_kerberos.HTTPKerberosAuth(principal="user@REALM")
auth.generate_request_header(response, host)
clientInit_complete.assert_called_with(
"HTTP@www.example.org",
gssflags=(
kerberos.GSS_C_MUTUAL_FLAG |
kerberos.GSS_C_SEQUENCE_FLAG),
principal="user@REALM")
def test_realm_override(self):
with patch.multiple(kerberos_module_name,
authGSSClientInit=clientInit_complete,
authGSSClientResponse=clientResponse,
authGSSClientStep=clientStep_continue):
response = requests.Response()
response.url = "http://www.example.org/"
response.headers = {'www-authenticate': 'negotiate token'}
host = urlparse(response.url).hostname
auth = requests_kerberos.HTTPKerberosAuth(hostname_override="otherhost.otherdomain.org")
auth.generate_request_header(response, host)
clientInit_complete.assert_called_with(
"HTTP@otherhost.otherdomain.org",
gssflags=(
kerberos.GSS_C_MUTUAL_FLAG |
kerberos.GSS_C_SEQUENCE_FLAG),
principal=None)
if __name__ == '__main__':
unittest.main()