| package org.apache.maven.archiva.web.util; |
| |
| /* |
| * 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. |
| */ |
| |
| import org.apache.commons.lang.StringUtils; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.jsp.PageContext; |
| |
| /** |
| * ContextUtils |
| * |
| * @author <a href="mailto:joakime@apache.org">Joakim Erdfelt</a> |
| * @version $Id$ |
| */ |
| public class ContextUtils |
| { |
| private static final Map defaultSchemePortMap; |
| |
| static |
| { |
| defaultSchemePortMap = new HashMap(); |
| defaultSchemePortMap.put( "http", new Integer( 80 ) ); |
| defaultSchemePortMap.put( "https", new Integer( 443 ) ); |
| } |
| |
| /** |
| * Using the page context, get the base url. |
| * |
| * @param pageContext the page context to use |
| * @return the base url with module name. |
| */ |
| public static String getBaseURL( PageContext pageContext ) |
| { |
| return getBaseURL( pageContext, null ); |
| } |
| |
| /** |
| * Using the page context, get the base url and append an optional resource name to the end of the provided url. |
| * |
| * @param pageContext the page context to use |
| * @param resource the resource name (or null if no resource name specified) |
| * @return the base url with resource name. |
| */ |
| public static String getBaseURL( PageContext pageContext, String resource ) |
| { |
| HttpServletRequest request = (HttpServletRequest) pageContext.getRequest(); |
| return getBaseURL( request, resource ); |
| } |
| |
| /** |
| * Using the http servlet request, get the base url and append an optional resource name to the end of the url. |
| * |
| * @param request the request to use |
| * @param resource the resource name (or null if not resource name should be appended) |
| * @return the base url with resource name. |
| */ |
| public static String getBaseURL( HttpServletRequest request, String resource ) |
| { |
| StringBuffer baseUrl = new StringBuffer(); |
| |
| baseUrl.append( request.getScheme() ).append( "://" ); |
| baseUrl.append( getServerName( request ) ); |
| baseUrl.append( request.getContextPath() ); |
| |
| if ( StringUtils.isNotBlank( resource ) ) |
| { |
| if ( !baseUrl.toString().endsWith( "/" ) ) |
| { |
| baseUrl.append( "/" ); |
| } |
| |
| baseUrl.append( resource ); |
| } |
| |
| return baseUrl.toString(); |
| } |
| |
| private static String getServerName( HttpServletRequest request ) |
| { |
| String name = request.getHeader( "X-Forwarded-Host" ); |
| if ( name == null ) |
| { |
| name = request.getServerName(); |
| int portnum = request.getServerPort(); |
| |
| // Only add port if non-standard. |
| Integer defaultPortnum = (Integer) defaultSchemePortMap.get( request.getScheme() ); |
| if ( ( defaultPortnum == null ) || ( defaultPortnum.intValue() != portnum ) ) |
| { |
| name = name + ":" + String.valueOf( portnum ); |
| } |
| return name; |
| } |
| return name; |
| } |
| } |