| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.cxf.fediz.service.idp.util; |
| |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| |
| import javax.servlet.http.HttpServletRequest; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.springframework.web.context.request.RequestAttributes; |
| import org.springframework.web.context.request.RequestContextHolder; |
| import org.springframework.web.context.request.ServletRequestAttributes; |
| import org.springframework.webflow.execution.RequestContext; |
| |
| /** |
| * Detects if a given URL means the local server (useful in case IDP/STS are co-located). If port 0 is |
| * explicitly set, then {@link #resolve(String, RequestContext)} will replace the original URL with a url |
| * containing the local server port. |
| */ |
| public final class LocalServerResolver { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(LocalServerResolver.class); |
| |
| private LocalServerResolver() { |
| } |
| |
| /** |
| * If url contains a 0 port, replaces it with the local server port. Otherwise returns url as-is (no |
| * modification). |
| */ |
| public static String resolve(String url) { |
| RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes(); |
| if (!(requestAttributes instanceof ServletRequestAttributes)) { |
| return url; |
| } |
| return resolve(url, ((ServletRequestAttributes)requestAttributes).getRequest()); |
| } |
| |
| public static String resolve(String url, RequestContext context) { |
| if (context == null) { |
| return url; |
| } |
| return resolve(url, WebUtils.getHttpServletRequest(context)); |
| } |
| |
| public static String resolve(String url, HttpServletRequest request) { |
| if (request == null) { |
| return url; |
| } |
| if (isLocal(url)) { |
| try { |
| URL urlValue = new URL(url); |
| URL updatedUrl = new URL(urlValue.getProtocol(), urlValue.getHost(), request.getLocalPort(), |
| urlValue.getFile()); |
| LOG.debug("URL updated to {}", updatedUrl.toString()); |
| return updatedUrl.toString(); |
| } catch (MalformedURLException e) { |
| LOG.error("Invalid Url '{}': {}", url, e.getMessage()); |
| } |
| } |
| return url; |
| } |
| |
| /** |
| * Returns true if the url represents a local server (that is port is explicitly set to 0) |
| */ |
| public static boolean isLocal(String url) { |
| boolean isLocal = false; |
| try { |
| URL urlValue = new URL(url); |
| isLocal = urlValue.getPort() == 0; |
| if (isLocal) { |
| LOG.info("Port is 0 used for {}. Local server port will be used.", url); |
| } |
| } catch (MalformedURLException e) { |
| LOG.error("Invalid Url '" + url + "': " + e.getMessage()); |
| } |
| return isLocal; |
| } |
| } |