muk_base/muk_utils/tools/http.py

###################################################################################
#
#    Copyright (c) 2017-2019 MuK IT GmbH.
#
#    This file is part of MuK Utils
#    (see https://mukit.at).
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU Lesser General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU Lesser General Public License for more details.
#
#    You should have received a copy of the GNU Lesser General Public License
#    along with this program. If not, see <http://www.gnu.org/licenses/>.
#
###################################################################################

import base64
import urllib

from werkzeug.datastructures import CombinedMultiDict


def decode_http_basic_authentication_value(value):
    try:
        username, password = base64.b64decode(value).decode().split(":", 1)
        return urllib.parse.unquote(username), urllib.parse.unquote(password)
    except:
        return None, None


def decode_http_basic_authentication(encoded_header):
    header_values = encoded_header.strip().split(" ")
    if len(header_values) == 1:
        return decode_http_basic_authentication_value(header_values[0])
    if len(header_values) == 2 and header_values[0].strip().lower() == "basic":
        return decode_http_basic_authentication_value(header_values[1])
    return None, None


def request_params(httprequest):
    return CombinedMultiDict([httprequest.args, httprequest.form, httprequest.files])