LoginChooser.java from DSpace at Krugle
Show LoginChooser.java syntax highlighted
/*
* LoginChooser.java
*
* Version: $Revision: 1 $
*
* Date: $Date: 2007/02/07 11:08:42 $
*
* Copyright (c) 2002-2005, Hewlett-Packard Company and Massachusetts
* Institute of Technology. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of the Hewlett-Packard Company nor the name of the
* Massachusetts Institute of Technology nor the names of their
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
package org.dspace.app.xmlui.aspect.eperson;
import java.io.Serializable;
import java.sql.SQLException;
import java.util.Iterator;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.cocoon.caching.CacheableProcessingComponent;
import org.apache.cocoon.environment.ObjectModelHelper;
import org.apache.cocoon.environment.Request;
import org.apache.cocoon.environment.Session;
import org.apache.cocoon.environment.http.HttpEnvironment;
import org.apache.excalibur.source.SourceValidity;
import org.apache.excalibur.source.impl.validity.NOPValidity;
import org.dspace.app.xmlui.cocoon.AbstractDSpaceTransformer;
import org.dspace.app.xmlui.utils.AuthenticationUtil;
import org.dspace.app.xmlui.wing.Message;
import org.dspace.app.xmlui.wing.WingException;
import org.dspace.app.xmlui.wing.element.Body;
import org.dspace.app.xmlui.wing.element.Division;
import org.dspace.app.xmlui.wing.element.Item;
import org.dspace.app.xmlui.wing.element.List;
import org.dspace.app.xmlui.wing.element.PageMeta;
import org.dspace.authenticate.AuthenticationManager;
import org.dspace.authenticate.AuthenticationMethod;
import org.dspace.core.ConfigurationManager;
import org.xml.sax.SAXException;
/**
* Displays a list of authentication methods. This page is displayed if more
* than one AuthenticationMethod is defined in the dpace config file.
*
* @author Jay Paz
*
*/
public class LoginChooser extends AbstractDSpaceTransformer implements
CacheableProcessingComponent {
public static final Message T_dspace_home = message("xmlui.general.dspace_home");
public static final Message T_title = message("xmlui.EPerson.LoginChooser.title");
public static final Message T_trail = message("xmlui.EPerson.LoginChooser.trail");
public static final Message T_head1 = message("xmlui.EPerson.LoginChooser.head1");
public static final Message T_para1 = message("xmlui.EPerson.LoginChooser.para1");
/**
* Generate the unique caching key. This key must be unique inside the space
* of this component.
*/
public Serializable getKey() {
Request request = ObjectModelHelper.getRequest(objectModel);
String previous_email = request.getParameter("login_email");
// Get any message parameters
Session session = request.getSession();
String header = (String) session
.getAttribute(AuthenticationUtil.REQUEST_INTERRUPTED_HEADER);
String message = (String) session
.getAttribute(AuthenticationUtil.REQUEST_INTERRUPTED_MESSAGE);
String characters = (String) session
.getAttribute(AuthenticationUtil.REQUEST_INTERRUPTED_CHARACTERS);
// If there is a message or previous email attempt then the page is not
// cachable
if (header == null && message == null && characters == null
&& previous_email == null)
// cacheable
return "1";
else
// Uncachable
return "0";
}
/**
* Generate the cache validity object.
*/
public SourceValidity getValidity() {
Request request = ObjectModelHelper.getRequest(objectModel);
String previous_email = request.getParameter("login_email");
// Get any message parameters
Session session = request.getSession();
String header = (String) session
.getAttribute(AuthenticationUtil.REQUEST_INTERRUPTED_HEADER);
String message = (String) session
.getAttribute(AuthenticationUtil.REQUEST_INTERRUPTED_MESSAGE);
String characters = (String) session
.getAttribute(AuthenticationUtil.REQUEST_INTERRUPTED_CHARACTERS);
// If there is a message or previous email attempt then the page is not
// cachable
if (header == null && message == null && characters == null
&& previous_email == null)
// Always valid
return NOPValidity.SHARED_INSTANCE;
else
// invalid
return null;
}
/**
* Set the page title and trail.
*/
public void addPageMeta(PageMeta pageMeta) throws WingException {
pageMeta.addMetadata("title").addContent(T_title);
pageMeta.addTrailLink(contextPath + "/", T_dspace_home);
pageMeta.addTrail().addContent(T_trail);
}
/**
* Display the login choices.
*/
public void addBody(Body body) throws SQLException, SAXException,
WingException {
Iterator authMethods = AuthenticationManager
.authenticationMethodIterator();
Request request = ObjectModelHelper.getRequest(objectModel);
Session session = request.getSession();
// Get any message parameters
String header = (String) session
.getAttribute(AuthenticationUtil.REQUEST_INTERRUPTED_HEADER);
String message = (String) session
.getAttribute(AuthenticationUtil.REQUEST_INTERRUPTED_MESSAGE);
String characters = (String) session
.getAttribute(AuthenticationUtil.REQUEST_INTERRUPTED_CHARACTERS);
if (header != null || message != null || characters != null) {
Division reason = body.addDivision("login-reason");
if (header != null)
reason.setHead(message(header));
else
// Allways have a head.
reason.setHead("Authentication Required");
if (message != null)
reason.addPara(message(message));
if (characters != null)
reason.addPara(characters);
}
Division loginChooser = body.addDivision("login-chooser");
loginChooser.setHead(T_head1);
loginChooser.addPara().addContent(T_para1);
List list = loginChooser.addList("login-options", List.TYPE_SIMPLE);
while (authMethods.hasNext()) {
final AuthenticationMethod authMethod = (AuthenticationMethod) authMethods
.next();
final Item item = list.addItem();
String loginURL;
if (ConfigurationManager.getBooleanProperty("xmlui.force.ssl")
&& !request.isSecure()) {
StringBuffer location = new StringBuffer("https://");
location
.append(ConfigurationManager.getProperty("dspace.hostname"))
.append(
authMethod
.loginPageURL(
context,
(HttpServletRequest) this.objectModel
.get(HttpEnvironment.HTTP_REQUEST_OBJECT),
(HttpServletResponse) this.objectModel
.get(HttpEnvironment.HTTP_RESPONSE_OBJECT)))
.append(
request.getQueryString() == null ? ""
: ("?" + request.getQueryString()));
loginURL = location.toString();
} else {
loginURL = authMethod.loginPageURL(context,
(HttpServletRequest) this.objectModel
.get(HttpEnvironment.HTTP_REQUEST_OBJECT),
(HttpServletResponse) this.objectModel
.get(HttpEnvironment.HTTP_RESPONSE_OBJECT));
}
item.addXref(loginURL, message(authMethod.loginPageTitle(context)));
}
}
}
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