001/*
002 * Copyright (C) 2022-2023 The Prometheus jmx_exporter Authors
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package io.prometheus.jmx.common.http.authenticator;
018
019import com.sun.net.httpserver.BasicAuthenticator;
020import io.prometheus.jmx.common.util.Precondition;
021
022/**
023 * Class to implement a username / plaintext password BasicAuthenticator
024 */
025public class PlaintextAuthenticator extends BasicAuthenticator {
026
027    private final String username;
028    private final String password;
029
030    /**
031     * Constructor
032     *
033     * @param realm realm
034     * @param username username
035     * @param password password
036     */
037    public PlaintextAuthenticator(String realm, String username, String password) {
038        super(realm);
039
040        Precondition.notNullOrEmpty(username);
041        Precondition.notNullOrEmpty(password);
042
043        this.username = username;
044        this.password = password;
045    }
046
047    /**
048     * called for each incoming request to verify the
049     * given name and password in the context of this
050     * Authenticator's realm. Any caching of credentials
051     * must be done by the implementation of this method
052     *
053     * @param username the username from the request
054     * @param password the password from the request
055     * @return <code>true</code> if the credentials are valid,
056     * <code>false</code> otherwise.
057     */
058    @Override
059    public boolean checkCredentials(String username, String password) {
060        return this.username.equals(username) && this.password.equals(password);
061    }
062}