blob: 3cdb25caf091ce6b2ab78cf6f3b0d26da47f9e57 [file] [log] [blame]
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;
}
}