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# Copyright 2014 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import json
import os
import mock
import pytest
from google.auth import environment_vars
from google.auth import exceptions
from google.auth import transport
from google.oauth2 import id_token
from google.oauth2 import service_account
SERVICE_ACCOUNT_FILE = os.path.join(
os.path.dirname(__file__), "../data/service_account.json"
)
ID_TOKEN_AUDIENCE = "https://pubsub.googleapis.com"
def make_request(status, data=None):
response = mock.create_autospec(transport.Response, instance=True)
response.status = status
if data is not None:
response.data = json.dumps(data).encode("utf-8")
request = mock.create_autospec(transport.Request)
request.return_value = response
return request
def test__fetch_certs_success():
certs = {"1": "cert"}
request = make_request(200, certs)
returned_certs = id_token._fetch_certs(request, mock.sentinel.cert_url)
request.assert_called_once_with(mock.sentinel.cert_url, method="GET")
assert returned_certs == certs
def test__fetch_certs_failure():
request = make_request(404)
with pytest.raises(exceptions.TransportError):
id_token._fetch_certs(request, mock.sentinel.cert_url)
request.assert_called_once_with(mock.sentinel.cert_url, method="GET")
@mock.patch("google.auth.jwt.decode", autospec=True)
@mock.patch("google.oauth2.id_token._fetch_certs", autospec=True)
def test_verify_token(_fetch_certs, decode):
result = id_token.verify_token(mock.sentinel.token, mock.sentinel.request)
assert result == decode.return_value
_fetch_certs.assert_called_once_with(
mock.sentinel.request, id_token._GOOGLE_OAUTH2_CERTS_URL
)
decode.assert_called_once_with(
mock.sentinel.token,
certs=_fetch_certs.return_value,
audience=None,
clock_skew_in_seconds=0,
)
@mock.patch("google.auth.jwt.decode", autospec=True)
@mock.patch("google.oauth2.id_token._fetch_certs", autospec=True)
def test_verify_token_args(_fetch_certs, decode):
result = id_token.verify_token(
mock.sentinel.token,
mock.sentinel.request,
audience=mock.sentinel.audience,
certs_url=mock.sentinel.certs_url,
)
assert result == decode.return_value
_fetch_certs.assert_called_once_with(mock.sentinel.request, mock.sentinel.certs_url)
decode.assert_called_once_with(
mock.sentinel.token,
certs=_fetch_certs.return_value,
audience=mock.sentinel.audience,
clock_skew_in_seconds=0,
)
@mock.patch("google.auth.jwt.decode", autospec=True)
@mock.patch("google.oauth2.id_token._fetch_certs", autospec=True)
def test_verify_token_clock_skew(_fetch_certs, decode):
result = id_token.verify_token(
mock.sentinel.token,
mock.sentinel.request,
audience=mock.sentinel.audience,
certs_url=mock.sentinel.certs_url,
clock_skew_in_seconds=10,
)
assert result == decode.return_value
_fetch_certs.assert_called_once_with(mock.sentinel.request, mock.sentinel.certs_url)
decode.assert_called_once_with(
mock.sentinel.token,
certs=_fetch_certs.return_value,
audience=mock.sentinel.audience,
clock_skew_in_seconds=10,
)
@mock.patch("google.oauth2.id_token.verify_token", autospec=True)
def test_verify_oauth2_token(verify_token):
verify_token.return_value = {"iss": "accounts.google.com"}
result = id_token.verify_oauth2_token(
mock.sentinel.token, mock.sentinel.request, audience=mock.sentinel.audience
)
assert result == verify_token.return_value
verify_token.assert_called_once_with(
mock.sentinel.token,
mock.sentinel.request,
audience=mock.sentinel.audience,
certs_url=id_token._GOOGLE_OAUTH2_CERTS_URL,
clock_skew_in_seconds=0,
)
@mock.patch("google.oauth2.id_token.verify_token", autospec=True)
def test_verify_oauth2_token_clock_skew(verify_token):
verify_token.return_value = {"iss": "accounts.google.com"}
result = id_token.verify_oauth2_token(
mock.sentinel.token,
mock.sentinel.request,
audience=mock.sentinel.audience,
clock_skew_in_seconds=10,
)
assert result == verify_token.return_value
verify_token.assert_called_once_with(
mock.sentinel.token,
mock.sentinel.request,
audience=mock.sentinel.audience,
certs_url=id_token._GOOGLE_OAUTH2_CERTS_URL,
clock_skew_in_seconds=10,
)
@mock.patch("google.oauth2.id_token.verify_token", autospec=True)
def test_verify_oauth2_token_invalid_iss(verify_token):
verify_token.return_value = {"iss": "invalid_issuer"}
with pytest.raises(exceptions.GoogleAuthError):
id_token.verify_oauth2_token(
mock.sentinel.token, mock.sentinel.request, audience=mock.sentinel.audience
)
@mock.patch("google.oauth2.id_token.verify_token", autospec=True)
def test_verify_firebase_token(verify_token):
result = id_token.verify_firebase_token(
mock.sentinel.token, mock.sentinel.request, audience=mock.sentinel.audience
)
assert result == verify_token.return_value
verify_token.assert_called_once_with(
mock.sentinel.token,
mock.sentinel.request,
audience=mock.sentinel.audience,
certs_url=id_token._GOOGLE_APIS_CERTS_URL,
clock_skew_in_seconds=0,
)
@mock.patch("google.oauth2.id_token.verify_token", autospec=True)
def test_verify_firebase_token_clock_skew(verify_token):
result = id_token.verify_firebase_token(
mock.sentinel.token,
mock.sentinel.request,
audience=mock.sentinel.audience,
clock_skew_in_seconds=10,
)
assert result == verify_token.return_value
verify_token.assert_called_once_with(
mock.sentinel.token,
mock.sentinel.request,
audience=mock.sentinel.audience,
certs_url=id_token._GOOGLE_APIS_CERTS_URL,
clock_skew_in_seconds=10,
)
def test_fetch_id_token_credentials_optional_request(monkeypatch):
monkeypatch.delenv(environment_vars.CREDENTIALS, raising=False)
# Test a request object is created if not provided
with mock.patch("google.auth.compute_engine._metadata.ping", return_value=True):
with mock.patch(
"google.auth.compute_engine.IDTokenCredentials.__init__", return_value=None
):
with mock.patch(
"google.auth.transport.requests.Request.__init__", return_value=None
) as mock_request:
id_token.fetch_id_token_credentials(ID_TOKEN_AUDIENCE)
mock_request.assert_called()
def test_fetch_id_token_credentials_from_metadata_server(monkeypatch):
monkeypatch.delenv(environment_vars.CREDENTIALS, raising=False)
mock_req = mock.Mock()
with mock.patch("google.auth.compute_engine._metadata.ping", return_value=True):
with mock.patch(
"google.auth.compute_engine.IDTokenCredentials.__init__", return_value=None
) as mock_init:
id_token.fetch_id_token_credentials(ID_TOKEN_AUDIENCE, request=mock_req)
mock_init.assert_called_once_with(
mock_req, ID_TOKEN_AUDIENCE, use_metadata_identity_endpoint=True
)
def test_fetch_id_token_credentials_from_explicit_cred_json_file(monkeypatch):
monkeypatch.setenv(environment_vars.CREDENTIALS, SERVICE_ACCOUNT_FILE)
cred = id_token.fetch_id_token_credentials(ID_TOKEN_AUDIENCE)
assert isinstance(cred, service_account.IDTokenCredentials)
assert cred._target_audience == ID_TOKEN_AUDIENCE
def test_fetch_id_token_credentials_no_cred_exists(monkeypatch):
monkeypatch.delenv(environment_vars.CREDENTIALS, raising=False)
with mock.patch(
"google.auth.compute_engine._metadata.ping",
side_effect=exceptions.TransportError(),
):
with pytest.raises(exceptions.DefaultCredentialsError) as excinfo:
id_token.fetch_id_token_credentials(ID_TOKEN_AUDIENCE)
assert excinfo.match(
r"Neither metadata server or valid service account credentials are found."
)
with mock.patch("google.auth.compute_engine._metadata.ping", return_value=False):
with pytest.raises(exceptions.DefaultCredentialsError) as excinfo:
id_token.fetch_id_token_credentials(ID_TOKEN_AUDIENCE)
assert excinfo.match(
r"Neither metadata server or valid service account credentials are found."
)
def test_fetch_id_token_credentials_invalid_cred_file_type(monkeypatch):
user_credentials_file = os.path.join(
os.path.dirname(__file__), "../data/authorized_user.json"
)
monkeypatch.setenv(environment_vars.CREDENTIALS, user_credentials_file)
with mock.patch("google.auth.compute_engine._metadata.ping", return_value=False):
with pytest.raises(exceptions.DefaultCredentialsError) as excinfo:
id_token.fetch_id_token_credentials(ID_TOKEN_AUDIENCE)
assert excinfo.match(
r"Neither metadata server or valid service account credentials are found."
)
def test_fetch_id_token_credentials_invalid_json(monkeypatch):
not_json_file = os.path.join(os.path.dirname(__file__), "../data/public_cert.pem")
monkeypatch.setenv(environment_vars.CREDENTIALS, not_json_file)
with pytest.raises(exceptions.DefaultCredentialsError) as excinfo:
id_token.fetch_id_token_credentials(ID_TOKEN_AUDIENCE)
assert excinfo.match(
r"GOOGLE_APPLICATION_CREDENTIALS is not valid service account credentials."
)
def test_fetch_id_token_credentials_invalid_cred_path(monkeypatch):
not_json_file = os.path.join(os.path.dirname(__file__), "../data/not_exists.json")
monkeypatch.setenv(environment_vars.CREDENTIALS, not_json_file)
with pytest.raises(exceptions.DefaultCredentialsError) as excinfo:
id_token.fetch_id_token_credentials(ID_TOKEN_AUDIENCE)
assert excinfo.match(
r"GOOGLE_APPLICATION_CREDENTIALS path is either not found or invalid."
)
def test_fetch_id_token(monkeypatch):
mock_cred = mock.MagicMock()
mock_cred.token = "token"
mock_req = mock.Mock()
with mock.patch(
"google.oauth2.id_token.fetch_id_token_credentials", return_value=mock_cred
) as mock_fetch:
token = id_token.fetch_id_token(mock_req, ID_TOKEN_AUDIENCE)
mock_fetch.assert_called_once_with(ID_TOKEN_AUDIENCE, request=mock_req)
mock_cred.refresh.assert_called_once_with(mock_req)
assert token == "token"
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