001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_testing/src/org/deegree/enterprise/WebUtils.java $
002 /*----------------------------------------------------------------------------
003 This file is part of deegree, http://deegree.org/
004 Copyright (C) 2001-2009 by:
005 Department of Geography, University of Bonn
006 and
007 lat/lon GmbH
008
009 This library is free software; you can redistribute it and/or modify it under
010 the terms of the GNU Lesser General Public License as published by the Free
011 Software Foundation; either version 2.1 of the License, or (at your option)
012 any later version.
013 This library is distributed in the hope that it will be useful, but WITHOUT
014 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
015 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
016 details.
017 You should have received a copy of the GNU Lesser General Public License
018 along with this library; if not, write to the Free Software Foundation, Inc.,
019 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
020
021 Contact information:
022
023 lat/lon GmbH
024 Aennchenstr. 19, 53177 Bonn
025 Germany
026 http://lat-lon.de/
027
028 Department of Geography, University of Bonn
029 Prof. Dr. Klaus Greve
030 Postfach 1147, 53001 Bonn
031 Germany
032 http://www.geographie.uni-bonn.de/deegree/
033
034 e-mail: info@deegree.org
035 ----------------------------------------------------------------------------*/
036 package org.deegree.enterprise;
037
038 import static java.lang.Integer.parseInt;
039 import static java.lang.System.getProperty;
040 import static java.util.Arrays.asList;
041 import static org.deegree.framework.log.LoggerFactory.getLogger;
042
043 import java.net.URL;
044 import java.util.TreeSet;
045
046 import javax.servlet.http.HttpServletRequest;
047
048 import org.apache.commons.httpclient.HostConfiguration;
049 import org.apache.commons.httpclient.HttpClient;
050 import org.deegree.framework.log.ILogger;
051 import org.deegree.framework.util.CharsetUtils;
052 import org.deegree.framework.util.StringTools;
053
054 /**
055 *
056 *
057 *
058 * @version $Revision: 18195 $
059 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
060 * @author last edited by: $Author: mschneider $
061 *
062 * @version 1.0. $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
063 *
064 * @since 2.0
065 */
066 public class WebUtils {
067
068 private static final ILogger LOG = getLogger( WebUtils.class );
069
070 /**
071 * returns the root path (address - port - context) of a web application read from the passed
072 * request<br>
073 * e.g. http://myserver:8080/deegree/services?request=GetCapabilites ... <br>
074 * will return 'http://myserver:8080/deegree'
075 *
076 * @param request
077 * @return the root path (address - port - context) of a web application read from the passed
078 * request
079 */
080 public static String getAbsoluteContextPath( HttpServletRequest request ) {
081
082 String s = request.getRequestURL().toString();
083 String[] parts = org.deegree.framework.util.StringTools.toArray( s, "/", false );
084 return parts[0] + "//" + parts[1] + request.getContextPath();
085
086 }
087
088 private static void handleProxies( String protocol, HttpClient client, String host ) {
089 TreeSet<String> nops = new TreeSet<String>();
090
091 String proxyHost = getProperty( ( protocol == null ? "" : protocol + "." ) + "proxyHost" );
092
093 if ( proxyHost != null ) {
094 String nop = getProperty( ( protocol == null ? "" : protocol + "." ) + "noProxyHosts" );
095 if ( nop != null && !nop.equals( "" ) ) {
096 nops.addAll( asList( nop.split( "\\|" ) ) );
097 }
098 nop = getProperty( ( protocol == null ? "" : protocol + "." ) + "nonProxyHosts" );
099 if ( nop != null && !nop.equals( "" ) ) {
100 nops.addAll( asList( nop.split( "\\|" ) ) );
101 }
102
103 int proxyPort = parseInt( getProperty( ( protocol == null ? "" : protocol + "." ) + "proxyPort" ) );
104
105 HostConfiguration hc = client.getHostConfiguration();
106
107 if ( LOG.isDebug() ) {
108 LOG.logDebug( "Found the following no- and nonProxyHosts", nops );
109 }
110
111 if ( !nops.contains( host ) ) {
112 if ( LOG.isDebug() ) {
113 LOG.logDebug( "Using proxy " + proxyHost + ":" + proxyPort );
114 if ( protocol == null ) {
115 LOG.logDebug( "This overrides the protocol specific settings, if there were any." );
116 }
117 }
118 hc.setProxy( proxyHost, proxyPort );
119 client.setHostConfiguration( hc );
120 } else {
121 if ( LOG.isDebug() ) {
122 LOG.logDebug( "Proxy was set, but " + host + " was contained in the no-/nonProxyList!" );
123 if ( protocol == null ) {
124 LOG.logDebug( "If a protocol specific proxy has been set, it will be used anyway!" );
125 }
126 }
127 }
128 }
129
130 if ( protocol != null ) {
131 handleProxies( null, client, host );
132 }
133 }
134
135 /**
136 * reads proxyHost and proxyPort from system parameters and sets them to the passed HttpClient
137 * instance
138 *
139 * @see HostConfiguration of the passed
140 * @see HttpClient
141 * @param client
142 * @param url
143 * @return HttpClient with proxy configuration
144 */
145 public static HttpClient enableProxyUsage( HttpClient client, URL url ) {
146 String host = url.getHost();
147 String protocol = url.getProtocol().toLowerCase();
148 handleProxies( protocol, client, host );
149 return client;
150 }
151
152 /**
153 * returns the charset read from the content type of the passed {@link HttpServletRequest}. If
154 * no content type or no charset is defined the charset read from {@link CharsetUtils} will be
155 * returned instead. So it is gauranteed that the method will not return <code>null</code>
156 *
157 * @param request
158 * @return charset
159 */
160 public static String readCharsetFromContentType( HttpServletRequest request ) {
161
162 String contentType = request.getHeader( "Content-Type" );
163 return readCharsetFromContentType( contentType );
164 }
165
166 /**
167 * @see #readCharsetFromContentType(HttpServletRequest)
168 * @param contentType
169 * @return charset
170 */
171 public static String readCharsetFromContentType( String contentType ) {
172 String charset = null;
173 if ( contentType != null ) {
174 String[] tmp = StringTools.toArray( contentType, ";", false );
175 if ( tmp.length == 2 ) {
176 charset = tmp[1].substring( tmp[1].indexOf( '=' ) + 1, tmp[1].length() );
177 } else {
178 charset = CharsetUtils.getSystemCharset();
179 }
180 } else {
181 charset = CharsetUtils.getSystemCharset();
182 }
183 return charset;
184 }
185
186 }