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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 (
ARMChallengeAuthenticationPolicy,
AuxiliaryAuthenticationPolicy,
)
from azure.core.pipeline.transport import HttpRequest
from devtools_testutils.fake_credentials import FakeTokenCredential
import pytest
from unittest.mock import Mock
CLAIM_TOKEN = base64.b64encode(b'{"access_token": {"foo": "bar"}}').decode()
CLAIM_NBF = base64.b64encode(b'{"access_token":{"nbf":{"essential":true, "value":"1603742800"}}}').decode()
ip_claim = b'{"access_token":{"nbf":{"essential":true,"value":"1610563006"},"xms_rp_ipaddr":{"value":"1.2.3.4"}}}'
CLAIM_IP = base64.b64encode(ip_claim).decode()[:-2] # Trim off padding = characters
def test_auxiliary_authentication_policy():
"""The auxiliary authentication policy should add a header containing a token from its credential"""
first_token = AccessToken("first", int(time.time()) + 3600)
second_token = AccessToken("second", int(time.time()) + 3600)
def verify_authorization_header(request):
assert request.http_request.headers["x-ms-authorization-auxiliary"] == ", ".join(
"Bearer {}".format(token.token) for token in [first_token, second_token]
)
return Mock()
fake_credential1 = Mock(spec_set=["get_token"], get_token=Mock(return_value=first_token))
fake_credential2 = Mock(spec_set=["get_token"], get_token=Mock(return_value=second_token))
policies = [
AuxiliaryAuthenticationPolicy([fake_credential1, fake_credential2], "scope"),
Mock(send=verify_authorization_header),
]
pipeline = Pipeline(transport=Mock(), policies=policies)
pipeline.run(HttpRequest("GET", "https://spam.eggs"))
assert fake_credential1.get_token.call_count == 1
assert fake_credential2.get_token.call_count == 1
pipeline.run(HttpRequest("GET", "https://spam.eggs"))
# Didn't need a new token
assert fake_credential1.get_token.call_count == 1
assert fake_credential2.get_token.call_count == 1
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="insufficient_claims", 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(spec_set=["get_token"], 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
args, kwargs = credential.get_token.call_args
assert expected_scope in args
assert kwargs["claims"] == expected_claims
with pytest.raises(StopIteration):
next(tokens)
with pytest.raises(StopIteration):
next(responses)
def test_multiple_claims_challenges():
"""ARMChallengeAuthenticationPolicy handle a response having multiple claims challenges"""
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"
claims = base64.b64encode(expected_claims.encode()).decode()
expected_header = ",".join(
(
'Bearer realm="", authorization_uri="https://localhost", client_id="00", error="insufficient_claims", claims="{}"'.format(
claims
),
'Bearer authorization_uri="https://login.windows-ppe.net/", error="invalid_token", error_description="User session has been revoked", claims="{}"'.format(
claims
),
)
)
responses = (
r
for r in (
Mock(status_code=401, headers={"WWW-Authenticate": expected_header}),
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(spec_set=["get_token"], 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
args, kwargs = credential.get_token.call_args
assert expected_scope in args
assert kwargs["claims"] == expected_claims
with pytest.raises(StopIteration):
next(tokens)
with pytest.raises(StopIteration):
next(responses)
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