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103 lines
3.3 KiB
C++
103 lines
3.3 KiB
C++
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. 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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*/
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/*
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* Copyright (C) 2019 ScyllaDB
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*
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* Modified by ScyllaDB
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "auth/sasl_challenge.hh"
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#include "exceptions/exceptions.hh"
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namespace auth {
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/**
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* SASL PLAIN mechanism specifies that credentials are encoded in a
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* sequence of UTF-8 bytes, delimited by 0 (US-ASCII NUL).
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* The form is : {code}authzId<NUL>authnId<NUL>password<NUL>{code}
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* authzId is optional, and in fact we don't care about it here as we'll
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* set the authzId to match the authnId (that is, there is no concept of
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* a user being authorized to act on behalf of another).
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*
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* @param bytes encoded credentials string sent by the client
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* @return map containing the username/password pairs in the form an IAuthenticator
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* would expect
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* @throws javax.security.sasl.SaslException
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*/
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bytes plain_sasl_challenge::evaluate_response(bytes_view client_response) {
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sstring username, password;
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auto b = client_response.crbegin();
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auto e = client_response.crend();
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auto i = b;
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while (i != e) {
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if (*i == 0) {
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sstring tmp(i.base(), b.base());
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if (password.empty()) {
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password = std::move(tmp);
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} else if (username.empty()) {
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username = std::move(tmp);
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}
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b = ++i;
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continue;
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}
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++i;
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}
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if (username.empty()) {
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throw exceptions::authentication_exception("Authentication ID must not be null");
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}
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if (password.empty()) {
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throw exceptions::authentication_exception("Password must not be null");
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}
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_username = std::move(username);
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_password = std::move(password);
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return {};
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}
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bool plain_sasl_challenge::is_complete() const {
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return _username && _password;
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}
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future<authenticated_user> plain_sasl_challenge::get_authenticated_user() const {
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return _when_complete(*_username, *_password);
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}
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}
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