164 lines
7.9 KiB
Python
164 lines
7.9 KiB
Python
"""Test AuthN Request generator and parser"""
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from base64 import b64encode
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from passbook.sources.saml.processors.constants import SAML_NAME_ID_FORMAT_EMAIL
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from django.contrib.sessions.middleware import SessionMiddleware
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from django.http.request import HttpRequest, QueryDict
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from django.test import RequestFactory, TestCase
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from guardian.utils import get_anonymous_user
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from passbook.crypto.models import CertificateKeyPair
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from passbook.flows.models import Flow
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from passbook.providers.saml.models import SAMLProvider
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from passbook.providers.saml.processors.assertion import AssertionProcessor
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from passbook.providers.saml.processors.request_parser import AuthNRequestParser
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from passbook.providers.saml.utils.encoding import deflate_and_base64_encode
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from passbook.sources.saml.exceptions import MismatchedRequestID
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from passbook.sources.saml.models import SAMLSource
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from passbook.sources.saml.processors.request import (
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SESSION_REQUEST_ID,
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RequestProcessor,
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)
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from passbook.sources.saml.processors.response import ResponseProcessor
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REDIRECT_REQUEST = """fZLNbsIwEIRfJfIdbKeFgEUipXAoEm0jSHvopTLJplhK7NTr9Oft6yRUKhekPdk73+yOdoWyqVuRdu6k9/DRAbrgu6k1iuEjJp3VwkhUKLRsAIUrxCF92IlwykRrjTOFqUmQIoJ1yui10dg1YA9gP1UBz/tdTE7OtSgo5WzKQzYditGeP8GW9rSQZk+HnAQbb6+07EGj7EI1j8SCeaVs21oVQ9dAoRqcf6OIhh6VLpV+pxZKZaFwlATbTUzeyqKazaqiDCO5WEQwZzKCagkwr8obWcqjb0PsYKvRSe1iErKQTTj3lYdc3HLBl68kyM4L340u19M5j4LiPs+zybjgC1gclvMNJFn104vB2P5L/TpW/kVNkqvBrug/+mjVikeP224y4/P7CdK6Nl9rC9JBTDihySi5vIbkFw=="""
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REDIRECT_SIGNATURE = "UlOe1BItHVHM+io6rUZAenIqfibm7hM6wr9I1rcP5kPJ4N8cbkyqmAMh5LD2lUq3PDERJfjdO/oOKnvJmbD2y9MOObyR2d7Udv62KERrA0qM917Q+w8wrLX7w2nHY96EDvkXD4iAomR5EE9dHRuubDy7uRv2syEevc0gfoLi7W/5vp96vJgsaSqxnTp+QiYq49KyWyMtxRULF2yd+vYDnHCDME73mNSULEHfwCU71dvbKpnFaej78q7wS20gUk6ysOOXXtvDHbiVcpUb/9oyDgNAxUjVvPdh96AhBFj2HCuGZhP0CGotafTciu6YlsiwUpuBkIYgZmNWYa3FR9LS4Q=="
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REDIRECT_SIG_ALG = "http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"
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REDIRECT_RELAY_STATE = "ss:mem:7a054b4af44f34f89dd2d973f383c250b6b076e7f06cfa8276008a6504eaf3c7"
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REDIRECT_CERT = """-----BEGIN CERTIFICATE-----
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MIIDCDCCAfCgAwIBAgIRAM5s+bhOHk4ChSpPkGSh0NswDQYJKoZIhvcNAQELBQAw
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KzEpMCcGA1UEAwwgcGFzc2Jvb2sgU2VsZi1zaWduZWQgQ2VydGlmaWNhdGUwHhcN
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MjAxMTA3MjAzNDIxWhcNMjExMTA4MjAzNDIxWjBUMSkwJwYDVQQDDCBwYXNzYm9v
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ayBTZWxmLXNpZ25lZCBDZXJ0aWZpY2F0ZTERMA8GA1UECgwIcGFzc2Jvb2sxFDAS
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BgNVBAsMC1NlbGYtc2lnbmVkMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKC
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AQEAuh+Bv6a/ogpic72X/sq86YiLzVjixnGqjc4wpsPPP00GX8jUAZJL4Tjo+sYK
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IU2DF2/azlVqjkbLho4rGuuc8YkbFXBEXPYc5h3bseO2vk6sbbbWKV0mro1VFhBh
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T59hBORuMMefmQdhFzsRNOGklIptQdg0quD8ET3+/uNfIT98S2ruZdYteFls46Sa
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MokZFYVD6pWEYV4P2MKVAFqJX9bqBW0LfCCfFqHAOJjUZj9dtleg86d2WfedUOG2
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LK0iLrydjhThbI0GUDhv0jWYkRlv04fdJ1WSRANYA3gBOnyw+Iigh2xNnYbVZMXT
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I0BupIJ4UoODMc4QpD2GYJ6oGwIDAQABMA0GCSqGSIb3DQEBCwUAA4IBAQCCEF3e
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Y99KxEBSR4H4/TvKbnh4QtHswOf7MaGdjtrld7l4u4Hc4NEklNdDn1XLKhZwnq3Z
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LRsRlJutDzZ18SRmAJPXPbka7z7D+LA1mbNQElOgiKyQHD9rIJSBr6X5SM9As3CR
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7QUsb8dg7kc+Jn7WuLZIEVxxMtekt0buWEdMJiklF0tCS3LNsP083FaQk/H1K0z6
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3PWP26EFdwir3RyTKLY5CBLjKrUAo9O1l/WBVFYbdetnipbGGu5f6nk6nnxbwLLI
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Dm52Vkq+xFDDUq9IqIoYvLaE86MDvtpMQEx65tIGU19vUf3fL/+sSfdRZ1HDzP4d
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qNAZMq1DqpibfCBg
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-----END CERTIFICATE-----"""
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def dummy_get_response(request: HttpRequest): # pragma: no cover
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"""Dummy get_response for SessionMiddleware"""
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return None
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class TestAuthNRequest(TestCase):
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"""Test AuthN Request generator and parser"""
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def setUp(self):
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self.provider = SAMLProvider.objects.create(
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authorization_flow=Flow.objects.get(
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slug="default-provider-authorization-implicit-consent"
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),
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acs_url="http://testserver/source/saml/provider/acs/",
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signing_kp=CertificateKeyPair.objects.first(),
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verification_kp=CertificateKeyPair.objects.first(),
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)
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self.source = SAMLSource.objects.create(
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slug="provider",
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issuer="passbook",
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signing_kp=CertificateKeyPair.objects.first(),
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)
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self.factory = RequestFactory()
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def test_signed_valid(self):
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"""Test generated AuthNRequest with valid signature"""
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http_request = self.factory.get("/")
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middleware = SessionMiddleware(dummy_get_response)
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middleware.process_request(http_request)
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http_request.session.save()
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# First create an AuthNRequest
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request_proc = RequestProcessor(self.source, http_request, "test_state")
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request = request_proc.build_auth_n()
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# Now we check the ID and signature
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parsed_request = AuthNRequestParser(self.provider).parse(
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deflate_and_base64_encode(request), "test_state"
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)
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self.assertEqual(parsed_request.id, request_proc.request_id)
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self.assertEqual(parsed_request.relay_state, "test_state")
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def test_signed_valid_detached(self):
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"""Test generated AuthNRequest with valid signature (detached)"""
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http_request = self.factory.get("/")
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middleware = SessionMiddleware(dummy_get_response)
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middleware.process_request(http_request)
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http_request.session.save()
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# First create an AuthNRequest
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request_proc = RequestProcessor(self.source, http_request, "test_state")
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params = request_proc.build_auth_n_detached()
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# Now we check the ID and signature
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parsed_request = AuthNRequestParser(self.provider).parse_detached(
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params["SAMLRequest"], "test_state", params["Signature"], params["SigAlg"]
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)
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self.assertEqual(parsed_request.id, request_proc.request_id)
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self.assertEqual(parsed_request.relay_state, "test_state")
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def test_request_id_invalid(self):
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"""Test generated AuthNRequest with invalid request ID"""
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http_request = self.factory.get("/")
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http_request.user = get_anonymous_user()
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middleware = SessionMiddleware(dummy_get_response)
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middleware.process_request(http_request)
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http_request.session.save()
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# First create an AuthNRequest
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request_proc = RequestProcessor(self.source, http_request, "test_state")
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request = request_proc.build_auth_n()
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# change the request ID
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http_request.session[SESSION_REQUEST_ID] = "test"
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http_request.session.save()
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# To get an assertion we need a parsed request (parsed by provider)
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parsed_request = AuthNRequestParser(self.provider).parse(
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deflate_and_base64_encode(request), "test_state"
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)
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# Now create a response and convert it to string (provider)
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response_proc = AssertionProcessor(self.provider, http_request, parsed_request)
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response = response_proc.build_response()
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# Now parse the response (source)
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http_request.POST = QueryDict(mutable=True)
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http_request.POST["SAMLResponse"] = deflate_and_base64_encode(response)
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response_parser = ResponseProcessor(self.source)
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with self.assertRaises(MismatchedRequestID):
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response_parser.parse(http_request)
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def test_signed_detached_static(self):
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"""Test request with detached signature,
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taken from https://www.samltool.com/generic_sso_req.php"""
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static_keypair = CertificateKeyPair.objects.create(
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name="samltool",
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certificate_data=REDIRECT_CERT
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)
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provider = SAMLProvider(
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name="samltool",
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authorization_flow=Flow.objects.get(
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slug="default-provider-authorization-implicit-consent"
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),
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acs_url="https://10.120.20.200/saml-sp/SAML2/POST",
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signing_kp=static_keypair,
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verification_kp=static_keypair,
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)
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parsed_request = AuthNRequestParser(provider).parse_detached(
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REDIRECT_REQUEST, REDIRECT_RELAY_STATE, REDIRECT_SIGNATURE, REDIRECT_SIG_ALG
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)
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self.assertEqual(parsed_request.id, "_dcf55fcd27a887e60a7ef9ee6fd3adab")
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self.assertEqual(parsed_request.name_id_policy, SAML_NAME_ID_FORMAT_EMAIL)
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self.assertEqual(parsed_request.relay_state, REDIRECT_RELAY_STATE)
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