def test_caching_when_only_expires_in_set():
"""the cache should function when auth responses don't include an explicit expires_on"""
access_token = "token"
now = 42
expires_in = 1800
expires_on = now + expires_in
expected_token = AccessToken(access_token, expires_on)
mock_send = Mock(return_value=mock_response(
json_payload={
"access_token": access_token,
"expires_in": expires_in,
"token_type": "Bearer"
}))
client = AuthnClient(endpoint="http://foo", transport=Mock(send=mock_send))
with patch("azure.identity._authn_client.time.time") as mock_time:
mock_time.return_value = 42
token = client.request_token(["scope"])
assert token.token == expected_token.token
assert token.expires_on == expected_token.expires_on
cached_token = client.get_cached_token(["scope"])
assert cached_token == expected_token
def test_caching_when_only_expires_in_set():
"""the cache should function when auth responses don't include an explicit expires_on"""
access_token = "token"
now = 42
expires_in = 1800
expires_on = now + expires_in
expected_token = AccessToken(access_token, expires_on)
mock_response = Mock(
text=lambda: json.dumps({
"access_token": access_token,
"expires_in": expires_in,
"token_type": "Bearer"
}),
headers={"content-type": "application/json"},
status_code=200,
content_type=["application/json"],
)
mock_send = Mock(return_value=mock_response)
client = AuthnClient("http://foo", transport=Mock(send=mock_send))
with patch("azure.identity._authn_client.time.time") as mock_time:
mock_time.return_value = 42
token = client.request_token(["scope"])
assert token.token == expected_token.token
assert token.expires_on == expected_token.expires_on
cached_token = client.get_cached_token(["scope"])
assert cached_token == expected_token
def test_request_url():
authority = "authority.com"
tenant = "expected_tenant"
def validate_url(url):
scheme, netloc, path, _, _, _ = urlparse(url)
assert scheme == "https"
assert netloc == authority
assert path.startswith("/" + tenant)
def mock_send(request, **kwargs):
validate_url(request.url)
return mock_response(json_payload={
"token_type": "Bearer",
"expires_in": 42,
"access_token": "***"
})
client = AuthnClient(tenant=tenant,
transport=Mock(send=mock_send),
authority=authority)
client.request_token(("scope", ))
request = client.get_refresh_token_grant_request({"secret": "***"},
"scope")
validate_url(request.url)
def test_cache_expiry():
access_token = "token"
now = 42
expires_in = 1800
expires_on = now + expires_in
expected_token = AccessToken(access_token, expires_on)
token_payload = {"access_token": access_token, "expires_in": expires_in, "token_type": "Bearer"}
mock_send = Mock(return_value=mock_response(json_payload=token_payload))
client = AuthnClient(endpoint="http://foo", transport=Mock(send=mock_send))
with patch("azure.identity._authn_client.time.time") as mock_time:
# populate the cache with a valid token
mock_time.return_value = now
token = client.request_token("scope")
assert token.token == expected_token.token
assert token.expires_on == expected_token.expires_on
cached_token = client.get_cached_token("scope")
assert cached_token == expected_token
# advance time past the cached token's expires_on
mock_time.return_value = expires_on + 3600
cached_token = client.get_cached_token("scope")
assert not cached_token
# request a new token
new_token = "new token"
token_payload["access_token"] = new_token
token = client.request_token("scope")
assert token.token == new_token
# it should be cached
cached_token = client.get_cached_token("scope")
assert cached_token.token == new_token
def test_cache_scopes():
scope_a = "scope_a"
scope_b = "scope_b"
scope_ab = scope_a + " " + scope_b
expected_tokens = {
scope_a: {
"access_token": scope_a,
"expires_in": 1 << 31,
"ext_expires_in": 1 << 31,
"token_type": "Bearer"
},
scope_b: {
"access_token": scope_b,
"expires_in": 1 << 31,
"ext_expires_in": 1 << 31,
"token_type": "Bearer"
},
scope_ab: {
"access_token": scope_ab,
"expires_in": 1 << 31,
"ext_expires_in": 1 << 31,
"token_type": "Bearer"
},
}
def mock_send(request, **kwargs):
token = expected_tokens[request.data["resource"]]
return mock_response(json_payload=token)
client = AuthnClient(endpoint="http://foo", transport=Mock(send=mock_send))
# if the cache has a token for a & b, it should hit for a, b, a & b
token = client.request_token([scope_a, scope_b],
form_data={"resource": scope_ab})
assert token.token == scope_ab
for scope in (scope_a, scope_b):
assert client.get_cached_token([scope]).token == scope_ab
assert client.get_cached_token([scope_a, scope_b]).token == scope_ab
# if the cache has only tokens for a and b alone, a & b should miss
client = AuthnClient(endpoint="http://foo", transport=Mock(send=mock_send))
for scope in (scope_a, scope_b):
token = client.request_token([scope], form_data={"resource": scope})
assert token.token == scope
assert client.get_cached_token([scope]).token == scope
assert not client.get_cached_token([scope_a, scope_b])
def test_request_url(authority):
tenant_id = "expected_tenant"
parsed_authority = urlparse(authority)
expected_netloc = parsed_authority.netloc or authority # "localhost" parses to netloc "", path "localhost"
def validate_url(url):
actual = urlparse(url)
assert actual.scheme == "https"
assert actual.netloc == expected_netloc
assert actual.path.startswith("/" + tenant_id)
def mock_send(request, **kwargs):
validate_url(request.url)
return mock_response(json_payload={
"token_type": "Bearer",
"expires_in": 42,
"access_token": "***"
})
client = AuthnClient(tenant=tenant_id,
transport=Mock(send=mock_send),
authority=authority)
client.request_token(("scope", ))
request = client.get_refresh_token_grant_request({"secret": "***"},
"scope")
validate_url(request.url)
# authority can be configured via environment variable
with patch.dict("os.environ",
{EnvironmentVariables.AZURE_AUTHORITY_HOST: authority},
clear=True):
client = AuthnClient(tenant=tenant_id, transport=Mock(send=mock_send))
client.request_token(("scope", ))
request = client.get_refresh_token_grant_request({"secret": "***"},
"scope")
validate_url(request.url)
def test_expires_in_strings():
expected_token = "token"
mock_response = Mock(headers={"content-type": "application/json"}, status_code=200, content_type="application/json")
mock_send = Mock(return_value=mock_response)
mock_response.text = lambda: json.dumps(
{"access_token": expected_token, "expires_in": "42", "ext_expires_in": "42", "token_type": "Bearer"}
)
now = int(time.time())
with patch("azure.identity._authn_client.time.time") as mock_time:
mock_time.return_value = now
token = AuthnClient(endpoint="http://foo", transport=Mock(send=mock_send)).request_token("scope")
assert token.token == expected_token
assert token.expires_on == now + 42
def test_deserialization_app_service_msi():
now = 6
expires_in = 59 - now
expires_on = now + expires_in
access_token = "***"
expected_access_token = AccessToken(access_token, expires_on)
scope = "scope"
# response with expires_on only and it's a datetime string (App Service MSI, Linux)
token_payload = {
"access_token": access_token,
"expires_on": "01/01/1970 00:00:{} +00:00".format(now + expires_in),
"token_type": "Bearer",
"resource": scope,
}
mock_send = Mock(return_value=mock_response(json_payload=token_payload))
token = AuthnClient(endpoint="http://foo", transport=Mock(send=mock_send)).request_token(scope)
assert token == expected_access_token
def test_cache_expiry():
access_token = "token"
now = 42
expires_in = 1800
expires_on = now + expires_in
expected_token = AccessToken(access_token, expires_on)
token_payload = {
"access_token": access_token,
"expires_in": expires_in,
"token_type": "Bearer"
}
mock_response = Mock(
text=lambda: json.dumps(token_payload),
headers={"content-type": "application/json"},
status_code=200,
content_type=["application/json"],
)
mock_send = Mock(return_value=mock_response)
client = AuthnClient("http://foo", transport=Mock(send=mock_send))
with patch("azure.identity._authn_client.time.time") as mock_time:
# populate the cache with a valid token
mock_time.return_value = now
token = client.request_token("scope")
assert token.token == expected_token.token
assert token.expires_on == expected_token.expires_on
cached_token = client.get_cached_token("scope")
assert cached_token == expected_token
# advance time past the cached token's expires_on
mock_time.return_value = expires_on + 3600
cached_token = client.get_cached_token("scope")
assert not cached_token
# request a new token
new_token = "new token"
token_payload["access_token"] = new_token
token = client.request_token("scope")
assert token.token == new_token
# it should be cached
cached_token = client.get_cached_token("scope")
assert cached_token.token == new_token
def test_should_refresh():
client = AuthnClient(endpoint="http://foo")
now = int(time.time())
# do not need refresh
token = AccessToken("token", now + DEFAULT_REFRESH_OFFSET + 1)
should_refresh = client.should_refresh(token)
assert not should_refresh
# need refresh
token = AccessToken("token", now + DEFAULT_REFRESH_OFFSET - 1)
should_refresh = client.should_refresh(token)
assert should_refresh
# not exceed cool down time, do not refresh
token = AccessToken("token", now + DEFAULT_REFRESH_OFFSET - 1)
client._last_refresh_time = now - DEFAULT_TOKEN_REFRESH_RETRY_DELAY + 1
should_refresh = client.should_refresh(token)
assert not should_refresh
def test_expires_in_strings():
expected_token = "token"
mock_send = Mock(return_value=mock_response(
json_payload={
"access_token": expected_token,
"expires_in": "42",
"ext_expires_in": "42",
"token_type": "Bearer",
}))
now = int(time.time())
with patch("azure.identity._authn_client.time.time") as mock_time:
mock_time.return_value = now
token = AuthnClient(
endpoint="http://foo",
transport=Mock(send=mock_send)).request_token("scope")
assert token.token == expected_token
assert token.expires_on == now + 42
def test_deserialization_expires_strings():
now = 6
expires_in = 59 - now
expires_on = now + expires_in
access_token = "***"
expected_access_token = AccessToken(access_token, expires_on)
scope = "scope"
# response with string expires_in and expires_on (IMDS, Cloud Shell)
token_payload = {
"access_token": access_token,
"expires_in": str(expires_in),
"ext_expires_in": str(expires_in),
"expires_on": str(expires_on),
"token_type": "Bearer",
"resource": scope,
}
mock_send = Mock(return_value=mock_response(json_payload=token_payload))
token = AuthnClient(endpoint="http://foo", transport=Mock(send=mock_send)).request_token(scope)
assert token == expected_access_token
def test_authn_client_deserialization():
# using the synchronous AuthnClient to drive this test but the functionality tested is
# in the sans I/O AuthnClientBase, shared with AsyncAuthnClient
now = 6
expires_in = 59 - now
expires_on = now + expires_in
access_token = "***"
expected_access_token = AccessToken(access_token, expires_on)
scope = "scope"
mock_response = Mock(headers={"content-type": "application/json"},
status_code=200,
content_type=["application/json"])
mock_send = Mock(return_value=mock_response)
# response with expires_on only
mock_response.text = lambda: json.dumps({
"access_token": access_token,
"expires_on": expires_on,
"token_type": "Bearer",
"resource": scope
})
token = AuthnClient("http://foo",
transport=Mock(send=mock_send)).request_token(scope)
assert token == expected_access_token
# response with expires_on only and it's a datetime string (App Service MSI)
mock_response.text = lambda: json.dumps(
{
"access_token": access_token,
"expires_on": "01/01/1970 00:00:{} +00:00".format(now + expires_in
),
"token_type": "Bearer",
"resource": scope,
})
token = AuthnClient("http://foo",
transport=Mock(send=mock_send)).request_token(scope)
assert token == expected_access_token
# response with string expires_in and expires_on (IMDS, Cloud Shell)
mock_response.text = lambda: json.dumps({
"access_token": access_token,
"expires_in": str(expires_in),
"expires_on": str(expires_on),
"token_type": "Bearer",
"resource": scope,
})
token = AuthnClient("http://foo",
transport=Mock(send=mock_send)).request_token(scope)
assert token == expected_access_token
# response with int expires_in (AAD)
mock_response.text = lambda: json.dumps({
"access_token": access_token,
"expires_in": expires_in,
"token_type": "Bearer",
"ext_expires_in": expires_in
})
with patch("azure.identity._authn_client.time.time") as mock_time:
mock_time.return_value = now
token = AuthnClient(
"http://foo", transport=Mock(send=mock_send)).request_token(scope)
assert token == expected_access_token