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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 2021 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 org.wildfly.security.http.oidc.ElytronMessages.log;
import static org.wildfly.security.http.oidc.Oidc.KEYCLOAK_QUERY_BEARER_TOKEN;

import java.io.IOException;
import java.util.List;

/**
 * Pre-installed actions that must be authenticated
 *
 * Actions include:
 *
 * CORS Origin Check and Response headers
 * k_query_bearer_token: Get bearer token from server for Javascripts CORS requests
 *
 * @author Bill Burke
 * @author Farah Juma
 */
public class AuthenticatedActionsHandler {
    private OidcClientConfiguration deployment;
    private OidcHttpFacade facade;

    public AuthenticatedActionsHandler(OidcClientConfiguration deployment, OidcHttpFacade facade) {
        this.deployment = deployment;
        this.facade = facade;
    }

    public boolean handledRequest() {
        log.debugv("AuthenticatedActionsValve.invoke {0}", facade.getRequest().getURI());
        if (corsRequest()) return true;
        String requestUri = facade.getRequest().getURI();
        if (requestUri.endsWith(KEYCLOAK_QUERY_BEARER_TOKEN)) {
            queryBearerToken();
            return true;
        }
        return false;
    }

    protected void queryBearerToken()  {
        log.debugv("queryBearerToken {0}",facade.getRequest().getURI());
        if (abortTokenResponse()) return;
        facade.getResponse().setStatus(200);
        facade.getResponse().setHeader("Content-Type", "text/plain");
        try {
            facade.getResponse().getOutputStream().write(facade.getSecurityContext().getTokenString().getBytes());
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
        facade.getResponse().end();
    }

    protected boolean abortTokenResponse() {
        if (facade.getSecurityContext() == null) {
            log.debugv("Not logged in, sending back 401: {0}",facade.getRequest().getURI());
            facade.getResponse().sendError(401);
            facade.getResponse().end();
            return true;
        }
        if (!deployment.isExposeToken()) {
            facade.getResponse().setStatus(200);
            facade.getResponse().end();
            return true;
        }
        // Don't allow a CORS request if we're not validating CORS requests
        String origin = facade.getRequest().getHeader(CorsHeaders.ORIGIN);
        if (! deployment.isCors() && origin != null && ! origin.equals("null")) {
            facade.getResponse().setStatus(200);
            facade.getResponse().end();
            return true;
        }
        return false;
    }

    protected boolean corsRequest()  {
        if (! deployment.isCors()) return false;
        OidcSecurityContext securityContext = facade.getSecurityContext();
        String origin = facade.getRequest().getHeader(CorsHeaders.ORIGIN);
        origin = "null".equals(origin) ? null : origin;
        String exposeHeaders = deployment.getCorsExposedHeaders();

        String requestOrigin = getOrigin(facade.getRequest().getURI());
        log.debugv("Origin: {0} uri: {1}", origin, facade.getRequest().getURI());
        if (securityContext != null && origin != null && ! origin.equals(requestOrigin)) {
            AccessToken token = securityContext.getToken();
            List allowedOrigins = token.getAllowedOrigins();

            log.debugf("Allowed origins in token: %s", allowedOrigins);

            if (allowedOrigins == null || (!allowedOrigins.contains("*") && !allowedOrigins.contains(origin))) {
                if (allowedOrigins == null) {
                    log.debugv("allowedOrigins was null in token");
                } else {
                    log.debugv("allowedOrigins did not contain origin");
                }
                facade.getResponse().sendError(403);
                facade.getResponse().end();
                return true;
            }
            log.debugv("returning origin: {0}", origin);
            facade.getResponse().setStatus(200);
            facade.getResponse().setHeader(CorsHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, origin);
            facade.getResponse().setHeader(CorsHeaders.ACCESS_CONTROL_ALLOW_CREDENTIALS, "true");
            if (exposeHeaders != null) {
                facade.getResponse().setHeader(CorsHeaders.ACCESS_CONTROL_EXPOSE_HEADERS, exposeHeaders);
            }
        } else {
            log.debugv("cors validation not needed as we are not a secure session or origin header was null: {0}", facade.getRequest().getURI());
        }
        return false;
    }

    private static String getOrigin(String uri) {
        String u = uri;
        int e = u.indexOf('/', 8);
        return e != -1 ? u.substring(0, u.indexOf('/', 8)) : u;
    }
}