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#--------------------------------------------------------------------------
#
# Copyright (c) Microsoft Corporation. All rights reserved.
#
# The MIT License (MIT)
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the ""Software""), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
#--------------------------------------------------------------------------
import base64
import time
from azure.core.credentials import AccessToken
from azure.core.pipeline import Pipeline
from azure.mgmt.core.policies._authentication import _parse_claims_challenge, ARMChallengeAuthenticationPolicy
from azure.core.pipeline.transport import HttpRequest
import pytest
from unittest.mock import Mock
@pytest.mark.parametrize(
"challenge,expected_claims",
(
# CAE - insufficient claims
(
'Bearer realm="", authorization_uri="https://login.microsoftonline.com/common/oauth2/authorize", client_id="00000003-0000-0000-c000-000000000000", error="insufficient_claims", claims="eyJhY2Nlc3NfdG9rZW4iOiB7ImZvbyI6ICJiYXIifX0="',
'{"access_token": {"foo": "bar"}}',
),
# CAE - sessions revoked
(
'Bearer authorization_uri="https://login.windows-ppe.net/", error="invalid_token", error_description="User session has been revoked", claims="eyJhY2Nlc3NfdG9rZW4iOnsibmJmIjp7ImVzc2VudGlhbCI6dHJ1ZSwgInZhbHVlIjoiMTYwMzc0MjgwMCJ9fX0="',
'{"access_token":{"nbf":{"essential":true, "value":"1603742800"}}}',
),
# CAE - IP policy
(
'Bearer authorization_uri="https://login.windows.net/", error="invalid_token", error_description="Tenant IP Policy validate failed.", claims="eyJhY2Nlc3NfdG9rZW4iOnsibmJmIjp7ImVzc2VudGlhbCI6dHJ1ZSwidmFsdWUiOiIxNjEwNTYzMDA2In0sInhtc19ycF9pcGFkZHIiOnsidmFsdWUiOiIxLjIuMy40In19fQ"',
'{"access_token":{"nbf":{"essential":true,"value":"1610563006"},"xms_rp_ipaddr":{"value":"1.2.3.4"}}}',
),
# ARM
(
'Bearer authorization_uri="https://login.windows.net/", error="invalid_token", error_description="The authentication failed because of missing \'Authorization\' header."',
None,
),
),
)
def test_challenge_parsing(challenge, expected_claims):
claims = _parse_claims_challenge(challenge)
assert claims == expected_claims
def test_claims_challenge():
"""ARMChallengeAuthenticationPolicy should pass claims from an authentication challenge to its credential"""
first_token = AccessToken("first", int(time.time()) + 3600)
second_token = AccessToken("second", int(time.time()) + 3600)
tokens = (t for t in (first_token, second_token))
expected_claims = '{"access_token": {"essential": "true"}'
expected_scope = "scope"
challenge = 'Bearer authorization_uri="https://localhost", error=".", error_description=".", claims="{}"'.format(
base64.b64encode(expected_claims.encode()).decode()
)
responses = (r for r in (Mock(status_code=401, headers={"WWW-Authenticate": challenge}), Mock(status_code=200)))
def send(request):
res = next(responses)
if res.status_code == 401:
expected_token = first_token.token
else:
expected_token = second_token.token
assert request.headers["Authorization"] == "Bearer " + expected_token
return res
def get_token(*scopes, **kwargs):
assert scopes == (expected_scope,)
return next(tokens)
credential = Mock(get_token=Mock(wraps=get_token))
transport = Mock(send=Mock(wraps=send))
policies = [ARMChallengeAuthenticationPolicy(credential, expected_scope)]
pipeline = Pipeline(transport=transport, policies=policies)
response = pipeline.run(HttpRequest("GET", "https://localhost"))
assert response.http_response.status_code == 200
assert transport.send.call_count == 2
assert credential.get_token.call_count == 2
credential.get_token.assert_called_with(expected_scope, claims=expected_claims)
with pytest.raises(StopIteration):
next(tokens)
with pytest.raises(StopIteration):
next(responses)
def test_multiple_claims_challenges():
"""ARMChallengeAuthenticationPolicy should not attempt to handle a response having multiple claims challenges"""
expected_header = ",".join(
(
'Bearer realm="", authorization_uri="https://login.microsoftonline.com/common/oauth2/authorize", client_id="00000003-0000-0000-c000-000000000000", error="insufficient_claims", claims="eyJhY2Nlc3NfdG9rZW4iOiB7ImZvbyI6ICJiYXIifX0="',
'Bearer authorization_uri="https://login.windows-ppe.net/", error="invalid_token", error_description="User session has been revoked", claims="eyJhY2Nlc3NfdG9rZW4iOnsibmJmIjp7ImVzc2VudGlhbCI6dHJ1ZSwgInZhbHVlIjoiMTYwMzc0MjgwMCJ9fX0="',
)
)
def send(request):
return Mock(status_code=401, headers={"WWW-Authenticate": expected_header})
transport = Mock(send=Mock(wraps=send))
credential = Mock()
policies = [ARMChallengeAuthenticationPolicy(credential, "scope")]
pipeline = Pipeline(transport=transport, policies=policies)
response = pipeline.run(HttpRequest("GET", "https://localhost"))
assert transport.send.call_count == 1
assert credential.get_token.call_count == 1
# the policy should have returned the error response because it was unable to handle the challenge
assert response.http_response.status_code == 401
assert response.http_response.headers["WWW-Authenticate"] == expected_header
|
