notifications-api/tests/app/authentication/test_authentication.py

from datetime import datetime, timedelta

import pytest
from notifications_python_client.authentication import create_jwt_token
from flask import json, current_app
from app.dao.api_key_dao import get_unsigned_secrets, save_model_api_key, get_unsigned_secret
from app.models import ApiKey, Service


def test_should_not_allow_request_with_no_token(notify_api):
    with notify_api.test_request_context():
        with notify_api.test_client() as client:
            response = client.get('/service')
            assert response.status_code == 401
            data = json.loads(response.get_data())
            assert data['message'] == 'Unauthorized, authentication token must be provided'


def test_should_not_allow_request_with_incorrect_header(notify_api):
    with notify_api.test_request_context():
        with notify_api.test_client() as client:
            response = client.get(
                '/service',
                headers={'Authorization': 'Basic 1234'})
            assert response.status_code == 401
            data = json.loads(response.get_data())
            assert data['message'] == 'Unauthorized, authentication bearer scheme must be used'


def test_should_not_allow_request_with_incorrect_token(notify_api, sample_user):
    with notify_api.test_request_context():
        with notify_api.test_client() as client:
            response = client.get(
                '/service',
                headers={'Authorization': 'Bearer 1234'})
            assert response.status_code == 403
            data = json.loads(response.get_data())
            assert data['message'] == 'Invalid token: signature'


def test_should_not_allow_invalid_secret(notify_api, sample_api_key):
    with notify_api.test_request_context():
        with notify_api.test_client() as client:
            token = create_jwt_token(
                secret="not-so-secret",
                client_id=str(sample_api_key.service_id))
            response = client.get(
                '/service',
                headers={'Authorization': "Bearer {}".format(token)}
            )
            assert response.status_code == 403
            data = json.loads(response.get_data())
            assert data['message'] == 'Invalid token: signature'


def test_should_allow_valid_token(notify_api, sample_api_key):
    with notify_api.test_request_context():
        with notify_api.test_client() as client:
            token = __create_get_token(sample_api_key.service_id)
            response = client.get(
                '/service/{}'.format(str(sample_api_key.service_id)),
                headers={'Authorization': 'Bearer {}'.format(token)}
            )
            assert response.status_code == 200


def test_should_allow_valid_token_for_request_with_path_params(notify_api, sample_api_key):
    with notify_api.test_request_context():
        with notify_api.test_client() as client:
            token = __create_get_token(sample_api_key.service_id)
            response = client.get(
                '/service/{}'.format(str(sample_api_key.service_id)),
                headers={'Authorization': 'Bearer {}'.format(token)})
            assert response.status_code == 200


def test_should_allow_valid_token_when_service_has_multiple_keys(notify_api, sample_api_key):
    with notify_api.test_request_context():
        with notify_api.test_client() as client:
            data = {'service': sample_api_key.service,
                    'name': 'some key name',
                    'created_by': sample_api_key.created_by
                    }
            api_key = ApiKey(**data)
            save_model_api_key(api_key)
            token = __create_get_token(sample_api_key.service_id)
            response = client.get(
                '/service/{}'.format(str(sample_api_key.service_id)),
                headers={'Authorization': 'Bearer {}'.format(token)})
            assert response.status_code == 200


JSON_BODY = json.dumps({
    "key1": "value1",
    "key2": "value2",
    "key3": "value3"
})


def test_authentication_passes_admin_client_token(notify_api,
                                                  notify_db,
                                                  notify_db_session,
                                                  sample_api_key):
    with notify_api.test_request_context():
        with notify_api.test_client() as client:
            token = create_jwt_token(
                secret=current_app.config.get('ADMIN_CLIENT_SECRET'),
                client_id=current_app.config.get('ADMIN_CLIENT_USER_NAME'))
            response = client.get(
                '/service',
                headers={'Authorization': 'Bearer {}'.format(token)})
            assert response.status_code == 200


def test_authentication_passes_when_service_has_multiple_keys_some_expired(
        notify_api,
        notify_db,
        notify_db_session,
        sample_api_key):
    with notify_api.test_request_context():
        with notify_api.test_client() as client:
            expired_key_data = {'service': sample_api_key.service,
                                'name': 'expired_key',
                                'expiry_date': datetime.now(),
                                'created_by': sample_api_key.created_by
                                }
            expired_key = ApiKey(**expired_key_data)
            save_model_api_key(expired_key)
            another_key = {'service': sample_api_key.service,
                           'name': 'another_key',
                           'created_by': sample_api_key.created_by
                           }
            api_key = ApiKey(**another_key)
            save_model_api_key(api_key)
            token = create_jwt_token(
                secret=get_unsigned_secret(api_key.id),
                client_id=str(sample_api_key.service_id))
            response = client.get(
                '/service',
                headers={'Authorization': 'Bearer {}'.format(token)})
            assert response.status_code == 200


def test_authentication_returns_token_expired_when_service_uses_expired_key_and_has_multiple_keys(notify_api,
                                                                                                  notify_db,
                                                                                                  notify_db_session,
                                                                                                  sample_api_key):
    with notify_api.test_request_context():
        with notify_api.test_client() as client:
            expired_key = {'service': sample_api_key.service,
                           'name': 'expired_key',
                           'created_by': sample_api_key.created_by
                           }
            expired_api_key = ApiKey(**expired_key)
            save_model_api_key(expired_api_key)
            another_key = {'service': sample_api_key.service,
                           'name': 'another_key',
                           'created_by': sample_api_key.created_by
                           }
            api_key = ApiKey(**another_key)
            save_model_api_key(api_key)
            token = create_jwt_token(
                secret=get_unsigned_secret(expired_api_key.id),
                client_id=str(sample_api_key.service_id))
            # expire the key
            expire_the_key = {'id': expired_api_key.id,
                              'service': sample_api_key.service,
                              'name': 'expired_key',
                              'expiry_date': datetime.now() + timedelta(hours=-2),
                              'created_by': sample_api_key.created_by}
            save_model_api_key(expired_api_key, expire_the_key)
            response = client.get(
                '/service',
                headers={'Authorization': 'Bearer {}'.format(token)})
            assert response.status_code == 403
            data = json.loads(response.get_data())
            assert data['message'] == 'Invalid token: signature'


def test_authentication_returns_error_when_api_client_has_no_secrets(notify_api,
                                                                     notify_db,
                                                                     notify_db_session):
    with notify_api.test_request_context():
        with notify_api.test_client() as client:
            api_secret = notify_api.config.get('ADMIN_CLIENT_SECRET')
            token = create_jwt_token(
                secret=api_secret,
                client_id=notify_api.config.get('ADMIN_CLIENT_USER_NAME')
            )
            notify_api.config['ADMIN_CLIENT_SECRET'] = ''
            response = client.get(
                '/service',
                headers={'Authorization': 'Bearer {}'.format(token)})
            assert response.status_code == 403
            error_message = json.loads(response.get_data())
            assert error_message['message'] == 'Invalid token: signature'
            notify_api.config['ADMIN_CLIENT_SECRET'] = api_secret


def test_authentication_returns_error_when_service_has_no_secrets(notify_api,
                                                                  notify_db,
                                                                  notify_db_session,
                                                                  sample_service,
                                                                  fake_uuid):
    with notify_api.test_request_context():
        with notify_api.test_client() as client:
            token = create_jwt_token(
                secret=fake_uuid,
                client_id=str(sample_service.id))

            response = client.get(
                '/service',
                headers={'Authorization': 'Bearer {}'.format(token)})
            assert response.status_code == 403
            error_message = json.loads(response.get_data())
            assert error_message['message'] == 'Invalid token: signature'


def __create_get_token(service_id):
    if service_id:
        return create_jwt_token(secret=get_unsigned_secrets(service_id)[0],
                                client_id=str(service_id))
    else:
        return create_jwt_token(secret=get_unsigned_secrets(service_id)[0],
                                client_id=service_id)


def __create_post_token(service_id, request_body):
    return create_jwt_token(
        secret=get_unsigned_secrets(service_id)[0],
        client_id=str(service_id)
    )