222 lines
7.6 KiB
Python
222 lines
7.6 KiB
Python
# The Flask HTTP Digest Authentication Project.
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# Author: imacat@mail.imacat.idv.tw (imacat), 2022/10/22
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# Copyright (c) 2022 imacat.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""The test case for the HTTP digest authentication.
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"""
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import typing as t
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from secrets import token_urlsafe
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from flask import Response, Flask, g, redirect, request
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from flask_testing import TestCase
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from werkzeug.datastructures import WWWAuthenticate, Authorization
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from flask_digest_auth import DigestAuth, make_password_hash, Client
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_REALM: str = "testrealm@host.com"
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_USERNAME: str = "Mufasa"
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_PASSWORD: str = "Circle Of Life"
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class User:
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"""A dummy user"""
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def __init__(self, username: str, password_hash: str):
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"""Constructs a dummy user.
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:param username: The username.
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:param password_hash: The password hash.
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"""
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self.username: str = username
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self.password_hash: str = password_hash
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self.visits: int = 0
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class AuthenticationTestCase(TestCase):
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"""The test case for the HTTP digest authentication."""
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def create_app(self):
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"""Creates the Flask application.
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:return: The Flask application.
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"""
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app: Flask = Flask(__name__)
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app.config.from_mapping({
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"SECRET_KEY": token_urlsafe(32),
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"TESTING": True
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})
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app.test_client_class = Client
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auth: DigestAuth = DigestAuth(realm=_REALM)
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auth.init_app(app)
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user_db: t.Dict[str, User] \
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= {_USERNAME: User(
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_USERNAME, make_password_hash(_REALM, _USERNAME, _PASSWORD))}
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@auth.register_get_password
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def get_password_hash(username: str) -> t.Optional[str]:
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"""Returns the password hash of a user.
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:param username: The username.
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:return: The password hash, or None if the user does not exist.
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"""
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return user_db[username].password_hash if username in user_db \
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else None
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@auth.register_get_user
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def get_user(username: str) -> t.Optional[t.Any]:
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"""Returns a user.
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:param username: The username.
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:return: The user, or None if the user does not exist.
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"""
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return user_db[username] if username in user_db else None
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@auth.register_on_login
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def on_login(user: User):
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"""The callback when the user logs in.
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:param user: The logged-in user.
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:return: None.
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"""
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user.visits = user.visits + 1
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@app.get("/admin-1/auth", endpoint="admin-1")
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@auth.login_required
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def admin_1() -> str:
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"""The first administration section.
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:return: The response.
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"""
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return f"Hello, {g.user.username}! #1"
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@app.get("/admin-2/auth", endpoint="admin-2")
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@auth.login_required
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def admin_2() -> str:
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"""The second administration section.
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:return: The response.
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"""
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return f"Hello, {g.user.username}! #2"
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@app.post("/logout", endpoint="logout")
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@auth.login_required
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def logout() -> redirect:
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"""Logs out the user.
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:return: The response.
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"""
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auth.logout()
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return redirect(request.form.get("next"))
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return app
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def test_auth(self) -> None:
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"""Tests the authentication.
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:return: None.
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"""
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response: Response = self.client.get(self.app.url_for("admin-1"))
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self.assertEqual(response.status_code, 401)
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response = self.client.get(
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self.app.url_for("admin-1"), digest_auth=(_USERNAME, _PASSWORD))
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self.assertEqual(response.status_code, 200)
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self.assertEqual(response.data.decode("UTF-8"),
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f"Hello, {_USERNAME}! #1")
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response: Response = self.client.get(self.app.url_for("admin-2"))
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self.assertEqual(response.status_code, 200)
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self.assertEqual(response.data.decode("UTF-8"),
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f"Hello, {_USERNAME}! #2")
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self.assertEqual(g.user.visits, 1)
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def test_stale_opaque(self) -> None:
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"""Tests the stale and opaque value.
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:return: None.
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"""
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admin_uri: str = self.app.url_for("admin-1")
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response: Response
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www_authenticate: WWWAuthenticate
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auth_data: Authorization
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response = super(Client, self.client).get(admin_uri)
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self.assertEqual(response.status_code, 401)
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www_authenticate = response.www_authenticate
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self.assertEqual(www_authenticate.type, "digest")
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self.assertEqual(www_authenticate.stale, None)
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opaque: str = www_authenticate.opaque
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www_authenticate.nonce = "bad"
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auth_data = Client.make_authorization(
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www_authenticate, admin_uri, _USERNAME, _PASSWORD)
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response = super(Client, self.client).get(admin_uri, auth=auth_data)
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self.assertEqual(response.status_code, 401)
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www_authenticate = response.www_authenticate
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self.assertEqual(www_authenticate.stale, True)
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self.assertEqual(www_authenticate.opaque, opaque)
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auth_data = Client.make_authorization(
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www_authenticate, admin_uri, _USERNAME, _PASSWORD + "2")
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response = super(Client, self.client).get(admin_uri, auth=auth_data)
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self.assertEqual(response.status_code, 401)
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www_authenticate = response.www_authenticate
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self.assertEqual(www_authenticate.stale, False)
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self.assertEqual(www_authenticate.opaque, opaque)
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auth_data = Client.make_authorization(
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www_authenticate, admin_uri, _USERNAME, _PASSWORD)
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response = super(Client, self.client).get(admin_uri, auth=auth_data)
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self.assertEqual(response.status_code, 200)
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def test_logout(self) -> None:
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"""Tests the logging out.
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:return: None.
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"""
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admin_uri: str = self.app.url_for("admin-1")
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logout_uri: str = self.app.url_for("logout")
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response: Response
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response = self.client.get(admin_uri)
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self.assertEqual(response.status_code, 401)
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response = self.client.get(admin_uri,
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digest_auth=(_USERNAME, _PASSWORD))
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self.assertEqual(response.status_code, 200)
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response = self.client.get(admin_uri)
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self.assertEqual(response.status_code, 200)
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response = self.client.post(logout_uri, data={"next": admin_uri})
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self.assertEqual(response.status_code, 302)
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self.assertEqual(response.location, admin_uri)
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response = self.client.get(admin_uri)
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self.assertEqual(response.status_code, 401)
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response = self.client.get(admin_uri,
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digest_auth=(_USERNAME, _PASSWORD))
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self.assertEqual(response.status_code, 401)
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response = self.client.get(admin_uri,
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digest_auth=(_USERNAME, _PASSWORD))
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self.assertEqual(response.status_code, 200)
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response = self.client.get(admin_uri)
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self.assertEqual(response.status_code, 200)
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self.assertEqual(g.user.visits, 2)
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