def get_context_data(self, **kwargs):
role = self.request.GET.get('role', '')
campus = self.request.GET.get('campus', '')
lti_parameters = [
("roles", self._lti_role[role]),
("ext_roles", self._lti_ext_role[role]),
("custom_canvas_account_sis_id",
'uwcourse:{}:arts-&-sciences:psych:psych'.format(campus)),
("oauth_timestamp", generate_timestamp()),
("oauth_nonce", generate_nonce()),
("resource_link_title",
"UW LTI Development ({})".format(self.lti_app())),
]
lti_parameters += self._static_lti_parameters
# sign payload
lti_app_uri = self.lti_app_uri()
sbs = signature_base_string('POST', base_string_uri(lti_app_uri + '/'),
normalize_parameters(lti_parameters))
client_key = self._client_key
client = Client(client_key,
client_secret=self._client_secrets[client_key])
signature = sign_hmac_sha1_with_client(sbs, client)
lti_parameters.append(("oauth_signature", signature))
context = super().get_context_data(**kwargs)
context['uri'] = lti_app_uri
context['campus'] = campus
context['role_name'] = role
context['lti_parameters'] = lti_parameters
return context
def test_sign_hmac_sha1_with_client(self):
self.assertRaises(ValueError, sign_hmac_sha1_with_client,
self.control_base_string, self.client)
self.client.decode()
sign = sign_hmac_sha1_with_client(self.control_base_string,
self.client)
self.assertEqual(len(sign), 28)
self.assertEqual(sign, self.control_signature)
def test_sign_hmac_sha1_with_client(self):
self.assertRaises(ValueError,
sign_hmac_sha1_with_client,
self.control_base_string,
self.client)
self.client.decode()
sign = sign_hmac_sha1_with_client(
self.control_base_string, self.client)
self.assertEqual(len(sign), 28)
self.assertEqual(sign, self.control_signature)
def test_sign_hmac_sha1_with_client(self):
"""
Test sign and verify with HMAC-SHA1.
"""
self.assertEqual(
self.expected_signature_hmac_sha1,
sign_hmac_sha1_with_client(self.eg_signature_base_string,
self.hmac_client))
self.assertTrue(verify_hmac_sha1(
MockRequest('POST',
'http://example.com/request',
self.eg_params,
self.expected_signature_hmac_sha1),
self.hmac_client.client_secret,
self.hmac_client.resource_owner_secret))