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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2022 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package org.wildfly.security.http.oidc;

import static java.nio.charset.StandardCharsets.UTF_8;
import static org.wildfly.common.array.Arrays2.indexOf;
import static org.wildfly.security.http.HttpConstants.NO_TOKEN;
import static org.wildfly.security.http.oidc.ElytronMessages.log;

import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.util.List;

import org.wildfly.common.iteration.ByteIterator;
import org.wildfly.security.http.HttpConstants;

/**
 * @author Bill Burke
 * @author Farah Juma
 */
class BasicAuthRequestAuthenticator extends BearerTokenRequestAuthenticator {

    private static final String CHALLENGE_PREFIX = "Basic ";

    public BasicAuthRequestAuthenticator(OidcHttpFacade facade, OidcClientConfiguration oidcClientConfiguration) {
        super(facade, oidcClientConfiguration);
    }

    public Oidc.AuthOutcome authenticate()  {
        List authorizationValues = facade.getRequest().getHeaders(HttpConstants.AUTHORIZATION);
        if (authorizationValues == null || authorizationValues.isEmpty()) {
            challenge = challengeResponse(AuthenticationError.Reason.NO_AUTHORIZATION_HEADER, null, null);
            return Oidc.AuthOutcome.NOT_ATTEMPTED;
        }

        String basicValue = null;
        for (String authorizationValue : authorizationValues) {
            if (authorizationValue.regionMatches(true, 0, CHALLENGE_PREFIX, 0, CHALLENGE_PREFIX.length())) {
                basicValue = authorizationValue.substring(CHALLENGE_PREFIX.length());
                break;
            }
        }
        if (basicValue == null) {
            challenge = challengeResponse(AuthenticationError.Reason.INVALID_TOKEN, null, null);
            return Oidc.AuthOutcome.NOT_ATTEMPTED;
        }
        byte[] decodedValue = ByteIterator.ofBytes(basicValue.getBytes(UTF_8)).asUtf8String().base64Decode().drain();
        int colonPos = indexOf(decodedValue, ':');
        if (colonPos <= 0) {
            log.debug("Failed to obtain token");
            challenge = challengeResponse(AuthenticationError.Reason.INVALID_TOKEN, NO_TOKEN, null);
            return Oidc.AuthOutcome.FAILED;
        }

        ByteBuffer usernameBytes = ByteBuffer.wrap(decodedValue, 0, colonPos);
        ByteBuffer passwordBytes = ByteBuffer.wrap(decodedValue, colonPos + 1, decodedValue.length - colonPos - 1);
        CharBuffer usernameChars = UTF_8.decode(usernameBytes);
        CharBuffer passwordChars = UTF_8.decode(passwordBytes);
        AccessAndIDTokenResponse tokenResponse;
        try {
            String username = usernameChars.toString();
            String password = passwordChars.toString();
            tokenResponse = ServerRequest.getBearerToken(oidcClientConfiguration, username, password);
        } catch (Exception e) {
            log.debug("Failed to obtain token");
            challenge = challengeResponse(AuthenticationError.Reason.INVALID_TOKEN, NO_TOKEN, e.getMessage());
            return Oidc.AuthOutcome.FAILED;
        }
        tokenString = tokenResponse.getAccessToken();
        return verifyToken(tokenString);
    }

}