88 lines
2.9 KiB
Python
88 lines
2.9 KiB
Python
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# The Flask HTTP Digest Authentication Project.
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# Author: imacat@mail.imacat.idv.tw (imacat), 2023/10/5
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# Copyright (c) 2023 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 common test libraries.
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"""
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from secrets import token_urlsafe
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from typing import Optional, Literal, Dict
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from werkzeug.datastructures import Authorization, WWWAuthenticate
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from werkzeug.http import parse_set_header
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from flask_digest_auth import calc_response, make_password_hash
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REALM: str = "testrealm@host.com"
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"""The realm."""
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USERNAME: str = "Mufasa"
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"""The username."""
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PASSWORD: str = "Circle Of Life"
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"""The password."""
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ADMIN_1_URI: str = "/admin-1/auth"
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"""The first administration URI."""
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ADMIN_2_URI: str = "/admin-2/auth"
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"""The first administration URI."""
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LOGOUT_URI: str = "/logout"
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"""The log out URI."""
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def make_authorization(www_authenticate: WWWAuthenticate, uri: str,
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username: str, password: str) -> str:
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"""Composes and returns the request authorization.
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:param www_authenticate: The ``WWW-Authenticate`` response.
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:param uri: The request URI.
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:param username: The username.
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:param password: The password.
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:return: The request authorization header.
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"""
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qop: Optional[Literal["auth", "auth-int"]] = None
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if "auth" in parse_set_header(www_authenticate.get("qop")):
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qop = "auth"
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cnonce: Optional[str] = None
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if qop is not None or www_authenticate.algorithm == "MD5-sess":
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cnonce = token_urlsafe(8)
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nc: Optional[str] = None
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count: int = 1
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if qop is not None:
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nc: str = hex(count)[2:].zfill(8)
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expected: str = calc_response(
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method="GET", uri=uri,
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password_hash=make_password_hash(www_authenticate.realm,
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username, password),
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nonce=www_authenticate.nonce, qop=qop,
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algorithm=www_authenticate.algorithm, cnonce=cnonce, nc=nc,
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body=None)
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data: Dict[str, str] = {
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"username": username, "realm": www_authenticate.realm,
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"nonce": www_authenticate.nonce, "uri": uri, "response": expected}
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if www_authenticate.algorithm is not None:
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data["algorithm"] = www_authenticate.algorithm
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if cnonce is not None:
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data["cnonce"] = cnonce
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if www_authenticate.opaque is not None:
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data["opaque"] = www_authenticate.opaque
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if qop is not None:
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data["qop"] = qop
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if nc is not None:
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data["nc"] = nc
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return str(Authorization("digest", data=data))
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