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/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates
 * and other 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.keycloak.adapters.undertow;

import io.undertow.security.api.SecurityContext;
import io.undertow.server.HttpServerExchange;
import io.undertow.servlet.handlers.ServletRequestContext;
import org.keycloak.KeycloakPrincipal;
import org.keycloak.KeycloakSecurityContext;
import org.keycloak.adapters.AdapterTokenStore;
import org.keycloak.adapters.KeycloakDeployment;
import org.keycloak.adapters.OAuthRequestAuthenticator;
import org.keycloak.adapters.RefreshableKeycloakSecurityContext;
import org.keycloak.adapters.spi.HttpFacade;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

/**
 * @author Bill Burke
 * @author Stan Silvert [email protected] (C) 2014 Red Hat Inc.
 * @version $Revision: 1 $
 */
public class ServletRequestAuthenticator extends AbstractUndertowRequestAuthenticator {


    public ServletRequestAuthenticator(HttpFacade facade, KeycloakDeployment deployment, int sslRedirectPort,
                                       SecurityContext securityContext, HttpServerExchange exchange,
                                       AdapterTokenStore tokenStore) {
        super(facade, deployment, sslRedirectPort, securityContext, exchange, tokenStore);
    }

    @Override
    protected OAuthRequestAuthenticator createOAuthAuthenticator() {
        return new OAuthRequestAuthenticator(this, facade, deployment, sslRedirectPort, tokenStore);
    }

    @Override
    protected void propagateKeycloakContext(KeycloakUndertowAccount account) {
        super.propagateKeycloakContext(account);
        final ServletRequestContext servletRequestContext = exchange.getAttachment(ServletRequestContext.ATTACHMENT_KEY);
        HttpServletRequest req = (HttpServletRequest) servletRequestContext.getServletRequest();
        req.setAttribute(KeycloakSecurityContext.class.getName(), account.getKeycloakSecurityContext());
    }

    @Override
    protected KeycloakUndertowAccount createAccount(KeycloakPrincipal principal) {
        return new KeycloakUndertowAccount(principal);
    }

    @Override
    protected String changeHttpSessionId(boolean create) {
        if (!deployment.isTurnOffChangeSessionIdOnLogin()) return ChangeSessionId.changeSessionId(exchange, create);
        else return getHttpSessionId(create);
    }

    protected String getHttpSessionId(boolean create) {
        HttpSession session = getSession(create);
        return session != null ? session.getId() : null;
    }

    protected HttpSession getSession(boolean create) {
        final ServletRequestContext servletRequestContext = exchange.getAttachment(ServletRequestContext.ATTACHMENT_KEY);
        HttpServletRequest req = (HttpServletRequest) servletRequestContext.getServletRequest();
        return req.getSession(create);
    }
}