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# ------------------------------------
# Copyright (c) Microsoft Corporation.
# Licensed under the MIT License.
# ------------------------------------
import asyncio
from datetime import datetime
import json
import re
import sys
from unittest import mock
from azure.identity import CredentialUnavailableError
from azure.identity.aio import AzureDeveloperCliCredential
from azure.identity._constants import EnvironmentVariables
from azure.identity._credentials.azd_cli import CLI_NOT_FOUND, NOT_LOGGED_IN
from azure.core.exceptions import ClientAuthenticationError
import pytest
from helpers import INVALID_CHARACTERS, GET_TOKEN_METHODS
from helpers_async import get_completed_future
from test_azd_cli_credential import TEST_ERROR_OUTPUTS
SUBPROCESS_EXEC = AzureDeveloperCliCredential.__module__ + ".asyncio.create_subprocess_exec"
pytestmark = pytest.mark.asyncio
def mock_exec(stdout, stderr="", return_code=0):
async def communicate():
return (stdout.encode(), stderr.encode())
process = mock.Mock(communicate=communicate, returncode=return_code)
return mock.Mock(return_value=get_completed_future(process))
@pytest.mark.parametrize("get_token_method", GET_TOKEN_METHODS)
async def test_no_scopes(get_token_method):
"""The credential should raise ValueError when get_token is called with no scopes"""
with pytest.raises(ValueError):
await getattr(AzureDeveloperCliCredential(), get_token_method)()
@pytest.mark.parametrize("get_token_method", GET_TOKEN_METHODS)
async def test_invalid_tenant_id(get_token_method):
"""Invalid tenant IDs should raise ValueErrors."""
for c in INVALID_CHARACTERS:
with pytest.raises(ValueError):
AzureDeveloperCliCredential(tenant_id="tenant" + c)
with pytest.raises(ValueError):
kwargs = {"tenant_id": "tenant" + c}
if get_token_method == "get_token_info":
kwargs = {"options": kwargs}
await getattr(AzureDeveloperCliCredential(), get_token_method)("scope", **kwargs)
@pytest.mark.parametrize("get_token_method", GET_TOKEN_METHODS)
async def test_invalid_scopes(get_token_method):
"""Scopes with invalid characters should raise ValueErrors."""
for c in INVALID_CHARACTERS:
with pytest.raises(ValueError):
await getattr(AzureDeveloperCliCredential(), get_token_method)("scope" + c)
with pytest.raises(ValueError):
await getattr(AzureDeveloperCliCredential(), get_token_method)("scope", "scope2", "scope" + c)
async def test_close():
"""The credential must define close, although it's a no-op because the credential has no transport"""
await AzureDeveloperCliCredential().close()
async def test_context_manager():
"""The credential must be a context manager, although it does nothing as one because it has no transport"""
async with AzureDeveloperCliCredential():
pass
@pytest.mark.skipif(not sys.platform.startswith("win"), reason="tests Windows-specific behavior")
@pytest.mark.parametrize("get_token_method", GET_TOKEN_METHODS)
async def test_windows_fallback(get_token_method):
"""The credential should fall back to the sync implementation when not using ProactorEventLoop on Windows"""
sync_get_token = mock.Mock()
with mock.patch("azure.identity.aio._credentials.azd_cli._SyncAzureDeveloperCliCredential") as fallback:
fallback.return_value = mock.Mock(
spec_set=["get_token", "get_token_info"], get_token=sync_get_token, get_token_info=sync_get_token
)
with mock.patch(AzureDeveloperCliCredential.__module__ + ".asyncio.get_event_loop"):
# asyncio.get_event_loop now returns Mock, i.e. never ProactorEventLoop
credential = AzureDeveloperCliCredential()
await getattr(credential, get_token_method)("scope")
assert sync_get_token.call_count == 1
@pytest.mark.parametrize("get_token_method", GET_TOKEN_METHODS)
async def test_get_token(get_token_method):
"""The credential should parse the CLI's output to an AccessToken"""
access_token = "access token"
expected_expires_on = 1602015811
successful_output = json.dumps(
{
"expiresOn": datetime.fromtimestamp(expected_expires_on).strftime("%Y-%m-%dT%H:%M:%SZ"),
"token": access_token,
"subscription": "some-guid",
"tenant": "some-guid",
"tokenType": "Bearer",
}
)
with mock.patch("shutil.which", return_value="azd"):
with mock.patch(SUBPROCESS_EXEC, mock_exec(successful_output)):
credential = AzureDeveloperCliCredential()
token = await getattr(credential, get_token_method)("scope")
assert token.token == access_token
assert type(token.expires_on) == int
assert token.expires_on == expected_expires_on
@pytest.mark.parametrize("get_token_method", GET_TOKEN_METHODS)
async def test_cli_not_installed(get_token_method):
"""The credential should raise CredentialUnavailableError when the CLI isn't installed"""
with mock.patch("shutil.which", return_value=None):
with pytest.raises(CredentialUnavailableError, match=CLI_NOT_FOUND):
credential = AzureDeveloperCliCredential()
await getattr(credential, get_token_method)("scope")
@pytest.mark.parametrize("get_token_method", GET_TOKEN_METHODS)
async def test_cannot_execute_shell(get_token_method):
"""The credential should raise CredentialUnavailableError when the subprocess doesn't start"""
with mock.patch("shutil.which", return_value="azd"):
with mock.patch(SUBPROCESS_EXEC, mock.Mock(side_effect=OSError())):
with pytest.raises(CredentialUnavailableError):
credential = AzureDeveloperCliCredential()
await getattr(credential, get_token_method)("scope")
@pytest.mark.parametrize("get_token_method", GET_TOKEN_METHODS)
async def test_not_logged_in(get_token_method):
"""When the CLI isn't logged in, the credential should raise CredentialUnavailableError"""
stderr = "ERROR: not logged in, run `azd auth login` to login"
with mock.patch("shutil.which", return_value="azd"):
with mock.patch(SUBPROCESS_EXEC, mock_exec("", stderr, return_code=1)):
with pytest.raises(CredentialUnavailableError, match=NOT_LOGGED_IN):
credential = AzureDeveloperCliCredential()
await getattr(credential, get_token_method)("scope")
@pytest.mark.parametrize("get_token_method", GET_TOKEN_METHODS)
async def test_aadsts_error(get_token_method):
"""When there is an AADSTS error, the credential should raise an error containing the CLI's output even if the
error also contains the 'not logged in' string."""
stderr = "ERROR: AADSTS70043: The refresh token has expired, not logged in, run `azd auth login` to login"
with mock.patch("shutil.which", return_value="azd"):
with mock.patch(SUBPROCESS_EXEC, mock_exec("", stderr, return_code=1)):
with pytest.raises(ClientAuthenticationError, match=stderr):
credential = AzureDeveloperCliCredential()
await getattr(credential, get_token_method)("scope")
@pytest.mark.parametrize("get_token_method", GET_TOKEN_METHODS)
async def test_unexpected_error(get_token_method):
"""When the CLI returns an unexpected error, the credential should raise an error containing the CLI's output"""
stderr = "something went wrong"
with mock.patch("shutil.which", return_value="azd"):
with mock.patch(SUBPROCESS_EXEC, mock_exec("", stderr, return_code=42)):
with pytest.raises(ClientAuthenticationError, match=stderr):
credential = AzureDeveloperCliCredential()
await getattr(credential, get_token_method)("scope")
@pytest.mark.parametrize("output", TEST_ERROR_OUTPUTS)
@pytest.mark.parametrize("get_token_method", GET_TOKEN_METHODS)
async def test_parsing_error_does_not_expose_token(output, get_token_method):
"""Errors during CLI output parsing shouldn't expose access tokens in that output"""
with mock.patch("shutil.which", return_value="azd"):
with mock.patch(SUBPROCESS_EXEC, mock_exec(output)):
with pytest.raises(ClientAuthenticationError) as ex:
credential = AzureDeveloperCliCredential()
await getattr(credential, get_token_method)("scope")
assert "secret value" not in str(ex.value)
assert "secret value" not in repr(ex.value)
@pytest.mark.parametrize("output", TEST_ERROR_OUTPUTS)
@pytest.mark.parametrize("get_token_method", GET_TOKEN_METHODS)
async def test_subprocess_error_does_not_expose_token(output, get_token_method):
"""Errors from the subprocess shouldn't expose access tokens in CLI output"""
with mock.patch("shutil.which", return_value="azd"):
with mock.patch(SUBPROCESS_EXEC, mock_exec(output, return_code=1)):
with pytest.raises(ClientAuthenticationError) as ex:
credential = AzureDeveloperCliCredential()
await getattr(credential, get_token_method)("scope")
assert "secret value" not in str(ex.value)
assert "secret value" not in repr(ex.value)
@pytest.mark.parametrize("get_token_method", GET_TOKEN_METHODS)
async def test_timeout(get_token_method):
"""The credential should kill the subprocess after a timeout"""
proc = mock.Mock(communicate=mock.Mock(side_effect=asyncio.TimeoutError), returncode=None)
with mock.patch("shutil.which", return_value="azd"):
with mock.patch(SUBPROCESS_EXEC, mock.Mock(return_value=get_completed_future(proc))):
with pytest.raises(CredentialUnavailableError):
await getattr(AzureDeveloperCliCredential(), get_token_method)("scope")
assert proc.communicate.call_count == 1
@pytest.mark.parametrize("get_token_method", GET_TOKEN_METHODS)
async def test_multitenant_authentication(get_token_method):
default_tenant = "first-tenant"
first_token = "***"
second_tenant = "second-tenant"
second_token = first_token * 2
async def fake_exec(*args, **_):
tenant_id_index = args.index("--tenant-id") if "--tenant-id" in args else None
tenant = args[tenant_id_index + 1] if tenant_id_index is not None else default_tenant
assert tenant in (default_tenant, second_tenant), 'unexpected tenant "{}"'.format(tenant)
output = json.dumps(
{
"expiresOn": datetime.now().strftime("%Y-%m-%dT%H:%M:%SZ"),
"token": first_token if tenant == default_tenant else second_token,
"subscription": "some-guid",
"tenant": tenant,
"tokenType": "Bearer",
}
).encode()
return mock.Mock(communicate=mock.Mock(return_value=get_completed_future((output, b""))), returncode=0)
credential = AzureDeveloperCliCredential()
with mock.patch("shutil.which", return_value="azd"):
with mock.patch(SUBPROCESS_EXEC, fake_exec):
token = await getattr(credential, get_token_method)("scope")
assert token.token == first_token
kwargs = {"tenant_id": default_tenant}
if get_token_method == "get_token_info":
kwargs = {"options": kwargs}
token = await getattr(credential, get_token_method)("scope", **kwargs)
assert token.token == first_token
kwargs = {"tenant_id": second_tenant}
if get_token_method == "get_token_info":
kwargs = {"options": kwargs}
token = await getattr(credential, get_token_method)("scope", **kwargs)
assert token.token == second_token
# should still default to the first tenant
token = await getattr(credential, get_token_method)("scope")
assert token.token == first_token
@pytest.mark.parametrize("get_token_method", GET_TOKEN_METHODS)
async def test_multitenant_authentication_not_allowed(get_token_method):
expected_tenant = "expected-tenant"
expected_token = "***"
async def fake_exec(*args, **_):
tenant_id_index = args.index("--tenant-id") if "--tenant-id" in args else None
tenant = args[tenant_id_index + 1] if tenant_id_index is not None else None
assert tenant is None or tenant == expected_tenant
output = json.dumps(
{
"expiresOn": datetime.now().strftime("%Y-%m-%dT%H:%M:%SZ"),
"token": expected_token,
"subscription": "some-guid",
"tenant": expected_token,
"tokenType": "Bearer",
}
).encode()
return mock.Mock(communicate=mock.Mock(return_value=get_completed_future((output, b""))), returncode=0)
credential = AzureDeveloperCliCredential()
with mock.patch("shutil.which", return_value="azd"):
with mock.patch(SUBPROCESS_EXEC, fake_exec):
token = await getattr(credential, get_token_method)("scope")
assert token.token == expected_token
with mock.patch.dict("os.environ", {EnvironmentVariables.AZURE_IDENTITY_DISABLE_MULTITENANTAUTH: "true"}):
kwargs = {"tenant_id": "un" + expected_tenant}
if get_token_method == "get_token_info":
kwargs = {"options": kwargs}
token = await getattr(credential, get_token_method)("scope", **kwargs)
assert token.token == expected_token
|
