/*
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* The contents of this file are subject to the terms of the Common Development and
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* Distribution License (the License). You may not use this file except in compliance with the
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* License.
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*
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* You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
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* specific language governing permission and limitations under the License.
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*
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* When distributing Covered Software, include this CDDL Header Notice in each file and include
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* the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
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* Header, with the fields enclosed by brackets [] replaced by your own identifying
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* information: "Portions copyright [year] [name of copyright owner]".
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*
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* Copyright 2015 ForgeRock AS.
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*/
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package org.forgerock.opendj.rest2ldap;
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import static org.forgerock.http.util.Json.*;
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import static org.forgerock.opendj.rest2ldap.Rest2LDAP.configureConnectionFactory;
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import static org.forgerock.util.Utils.*;
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import java.io.Closeable;
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import java.io.IOException;
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import java.io.InputStream;
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import java.net.URL;
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import org.forgerock.http.Context;
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import org.forgerock.http.Handler;
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import org.forgerock.http.HttpApplication;
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import org.forgerock.http.HttpApplicationException;
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import org.forgerock.http.handler.Handlers;
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import org.forgerock.http.io.Buffer;
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import org.forgerock.http.protocol.Request;
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import org.forgerock.http.protocol.Response;
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import org.forgerock.json.JsonValue;
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import org.forgerock.json.resource.CollectionResourceProvider;
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import org.forgerock.json.resource.RequestHandler;
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import org.forgerock.json.resource.Router;
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import org.forgerock.json.resource.http.CrestHttp;
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import org.forgerock.opendj.ldap.ConnectionFactory;
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import org.forgerock.util.Factory;
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import org.forgerock.util.Reject;
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import org.forgerock.util.promise.NeverThrowsException;
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import org.forgerock.util.promise.Promise;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/** Rest2ldap HTTP application. */
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public final class Rest2LDAPHttpApplication implements HttpApplication {
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private static final Logger LOG = LoggerFactory.getLogger(Rest2LDAPHttpApplication.class);
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private static final class HttpHandler implements Handler, Closeable {
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private final ConnectionFactory ldapConnectionFactory;
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private final Handler delegate;
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HttpHandler(final JsonValue configuration) {
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ldapConnectionFactory = createLdapConnectionFactory(configuration);
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try {
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delegate = CrestHttp.newHttpHandler(createRouter(configuration, ldapConnectionFactory));
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} catch (final RuntimeException e) {
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closeSilently(ldapConnectionFactory);
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throw e;
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}
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}
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private static RequestHandler createRouter(
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final JsonValue configuration, final ConnectionFactory ldapConnectionFactory) {
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final AuthorizationPolicy authzPolicy = configuration.get("servlet")
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.get("authorizationPolicy")
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.required()
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.asEnum(AuthorizationPolicy.class);
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final String proxyAuthzTemplate = configuration.get("servlet").get("proxyAuthzIdTemplate").asString();
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final JsonValue mappings = configuration.get("servlet").get("mappings").required();
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final Router router = new Router();
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for (final String mappingUrl : mappings.keys()) {
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final JsonValue mapping = mappings.get(mappingUrl);
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final CollectionResourceProvider provider = Rest2LDAP.builder()
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.ldapConnectionFactory(ldapConnectionFactory)
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.authorizationPolicy(authzPolicy)
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.proxyAuthzIdTemplate(proxyAuthzTemplate)
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.configureMapping(mapping)
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.build();
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router.addRoute(Router.uriTemplate(mappingUrl), provider);
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}
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return router;
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}
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private static ConnectionFactory createLdapConnectionFactory(final JsonValue configuration) {
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final String ldapFactoryName = configuration.get("servlet").get("ldapConnectionFactory").asString();
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if (ldapFactoryName != null) {
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return configureConnectionFactory(
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configuration.get("ldapConnectionFactories").required(), ldapFactoryName);
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}
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return null;
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}
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@Override
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public void close() {
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closeSilently(ldapConnectionFactory);
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}
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@Override
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public Promise<Response, NeverThrowsException> handle(final Context context, final Request request) {
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return delegate.handle(context, request);
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}
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}
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private final URL configurationUrl;
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private HttpHandler handler;
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private HttpAuthenticationFilter filter;
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/**
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* Default constructor called by the HTTP Framework which will use the
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* default configuration file location.
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*/
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public Rest2LDAPHttpApplication() {
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this.configurationUrl = getClass().getResource("/opendj-rest2ldap-config.json");
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}
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/**
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* Creates a new Rest2LDAP HTTP application using the provided configuration URL.
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*
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* @param configurationURL
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* The URL to the JSON configuration file.
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*/
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public Rest2LDAPHttpApplication(final URL configurationURL) {
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Reject.ifNull(configurationURL, "The configuration URL must not be null");
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this.configurationUrl = configurationURL;
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}
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private static JsonValue readJson(final URL resource) throws IOException {
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try (InputStream in = resource.openStream()) {
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return new JsonValue(readJsonLenient(in));
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}
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}
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@Override
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public Handler start() throws HttpApplicationException {
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try {
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final JsonValue configuration = readJson(configurationUrl);
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handler = new HttpHandler(configuration);
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filter = new HttpAuthenticationFilter(configuration);
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return Handlers.chainOf(handler, filter);
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} catch (final Exception e) {
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// TODO i18n, once supported in opendj-rest2ldap
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final String errorMsg = "Unable to start Rest2Ldap Http Application";
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LOG.error(errorMsg, e);
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stop();
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throw new HttpApplicationException(errorMsg, e);
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}
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}
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@Override
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public Factory<Buffer> getBufferFactory() {
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// Use container default buffer factory.
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return null;
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}
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@Override
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public void stop() {
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closeSilently(handler, filter);
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handler = null;
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filter = null;
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}
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}
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