001 //$HeadURL: svn+ssh://rbezema@svn.wald.intevation.org/deegree/base/tags/2.1/src/org/deegree/enterprise/WebUtils.java $
002 /*---------------- FILE HEADER ------------------------------------------
003
004 This file is part of deegree.
005 Copyright (C) 2001-2006 by:
006 EXSE, Department of Geography, University of Bonn
007 http://www.giub.uni-bonn.de/deegree/
008 lat/lon GmbH
009 http://www.lat-lon.de
010
011 This library is free software; you can redistribute it and/or
012 modify it under the terms of the GNU Lesser General Public
013 License as published by the Free Software Foundation; either
014 version 2.1 of the License, or (at your option) any later version.
015
016 This library is distributed in the hope that it will be useful,
017 but WITHOUT ANY WARRANTY; without even the implied warranty of
018 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
019 Lesser General Public License for more details.
020
021 You should have received a copy of the GNU Lesser General Public
022 License along with this library; if not, write to the Free Software
023 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
024
025 Contact:
026
027 Andreas Poth
028 lat/lon GmbH
029 Aennchenstr. 19
030 53177 Bonn
031 Germany
032 E-Mail: poth@lat-lon.de
033
034 Prof. Dr. Klaus Greve
035 Department of Geography
036 University of Bonn
037 Meckenheimer Allee 166
038 53115 Bonn
039 Germany
040 E-Mail: greve@giub.uni-bonn.de
041
042 ---------------------------------------------------------------------------*/
043 package org.deegree.enterprise;
044
045 import java.net.URL;
046
047 import javax.servlet.http.HttpServletRequest;
048
049 import org.apache.commons.httpclient.HostConfiguration;
050 import org.apache.commons.httpclient.HttpClient;
051 import org.deegree.framework.util.CharsetUtils;
052 import org.deegree.framework.util.StringTools;
053
054 /**
055 *
056 *
057 *
058 * @version $Revision: 7809 $
059 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
060 * @author last edited by: $Author: apoth $
061 *
062 * @version 1.0. $Revision: 7809 $, $Date: 2007-07-23 13:48:49 +0200 (Mo, 23 Jul 2007) $
063 *
064 * @since 2.0
065 */
066 public class WebUtils {
067
068 /**
069 * returns the root path (address - port - context) of a web application read from the passed
070 * request<br>
071 * e.g. http://myserver:8080/deegree/services?request=GetCapabilites ... <br>
072 * will return 'http://myserver:8080/deegree'
073 *
074 * @param request
075 * @return the root path (address - port - context) of a web application read from the passed
076 * request
077 */
078 public static String getAbsoluteContextPath( HttpServletRequest request ) {
079
080 String s = request.getRequestURL().toString();
081 String[] parts = org.deegree.framework.util.StringTools.toArray( s, "/", false );
082 return parts[0] + "//" + parts[1] + request.getContextPath();
083
084 }
085
086 /**
087 * reads proxyHost and proxyPort from system parameters and sets them to the
088 *
089 * @see HostConfiguration of the passed
090 * @see HttpClient
091 * @param client
092 * @param url
093 * @return HttpClient with proxy configuration
094 */
095 public static synchronized HttpClient enableProxyUsage( HttpClient client, URL url ) {
096 String host = url.getHost();
097 String protocol = url.getProtocol().toLowerCase();
098 HostConfiguration hc = client.getHostConfiguration();
099 if ( System.getProperty( "http.proxyHost" ) != null && "http".equals( protocol ) ) {
100 String nop = System.getProperty( "http.noProxyHosts" );
101 if ( nop != null && nop.indexOf( host ) < 0 ) {
102 hc.setProxy( System.getProperty( "http.proxyHost" ),
103 Integer.parseInt( System.getProperty( "http.proxyPort" ) ) );
104 }
105 } else if ( System.getProperty( "https.proxyHost" ) != null && "https".equals( protocol ) ) {
106 String nop = System.getProperty( "https.noProxyHosts" );
107 if ( nop != null && nop.indexOf( host ) < 0 ) {
108 hc.setProxy( System.getProperty( "https.proxyHost" ),
109 Integer.parseInt( System.getProperty( "https.proxyPort" ) ) );
110 }
111 } else if ( System.getProperty( "ftp.proxyHost" ) != null && "ftp".equals( protocol ) ) {
112 String nop = System.getProperty( "ftp.noProxyHosts" );
113 if ( nop != null && nop.indexOf( host ) < 0 ) {
114 hc.setProxy( System.getProperty( "ftp.proxyHost" ),
115 Integer.parseInt( System.getProperty( "https.proxyPort" ) ) );
116 }
117 } else if ( System.getProperty( "proxyHost" ) != null ) {
118 String nop = System.getProperty( "noProxyHosts" );
119 if ( nop != null && nop.indexOf( host ) < 0 ) {
120 hc.setProxy( System.getProperty( "proxyHost" ), Integer.parseInt( System.getProperty( "proxyPort" ) ) );
121 }
122 }
123 client.setHostConfiguration( hc );
124
125 return client;
126 }
127
128 /**
129 * returns the charset read from the content type of the passed {@link HttpServletRequest}. If
130 * no content type or no charset is defined the charset read from {@link CharsetUtils} will be
131 * returned instead. So it is gauranteed that the method will not return <code>null</code>
132 *
133 * @param request
134 * @return charset
135 */
136 public static String readCharsetFromContentType( HttpServletRequest request ) {
137
138 String contentType = request.getHeader( "Content-Type" );
139 return readCharsetFromContentType( contentType );
140 }
141
142 /**
143 * @see #readCharsetFromContentType(HttpServletRequest)
144 * @param contentType
145 * @return charset
146 */
147 public static String readCharsetFromContentType( String contentType ) {
148 String charset = null;
149 if ( contentType != null ) {
150 String[] tmp = StringTools.toArray( contentType, ";", false );
151 if ( tmp.length == 2 ) {
152 charset = tmp[1].substring( tmp[1].indexOf( '=' ) + 1, tmp[1].length() );
153 } else {
154 charset = CharsetUtils.getSystemCharset();
155 }
156 } else {
157 charset = CharsetUtils.getSystemCharset();
158 }
159 return charset;
160 }
161
162
163 }