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RESTHeart Core - Core services for RESTHeart

There is a newer version: 8.1.5

/*-
 * ========================LICENSE_START=================================
 * restheart-core
 * %%
 * Copyright (C) 2014 - 2024 SoftInstigate
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see .
 * =========================LICENSE_END==================================
 */
package org.restheart.security.handlers;

import java.util.Set;
import java.util.stream.Collectors;

import org.restheart.exchange.Request;
import org.restheart.handlers.PipelinedHandler;
import org.restheart.plugins.PluginRecord;
import org.restheart.plugins.security.Authorizer;
import org.restheart.plugins.security.Authorizer.TYPE;
import org.restheart.utils.PluginUtils;

import com.google.common.collect.Sets;

import io.undertow.server.HttpServerExchange;

/**
 *
 * @author Andrea Di Cesare {@literal }
 */
public class AuthenticationConstraintHandler extends PipelinedHandler {

    private final Set allowers;

    /**
     *
     * @param next
     * @param authorizers
     */
    public AuthenticationConstraintHandler(PipelinedHandler next, Set> authorizers) {
        super(next);
        this.allowers = authorizers == null
            ? Sets.newHashSet()
            : authorizers.stream()
                .filter(a -> a.isEnabled())
                .filter(a -> a.getInstance() != null)
                .map(a -> a.getInstance())
                .filter(a -> PluginUtils.authorizerType(a) == TYPE.ALLOWER)
                .collect(Collectors.toSet());
    }

    /**
     *
     * @param exchange
     * @return true if all enabled authorizers of type ALLOWER require authentication
     */
    protected boolean isAuthenticationRequired(final HttpServerExchange exchange) {
        return this.allowers.isEmpty()
                ? false
                : allowers.stream().allMatch(a -> a.isAuthenticationRequired(Request.of(exchange)));
    }

    @Override
    public void handleRequest(HttpServerExchange exchange) throws Exception {
        if (isAuthenticationRequired(exchange)) {
            exchange.getSecurityContext().setAuthenticationRequired();
        }

        next(exchange);
    }
}