/******************************************************************************
* JBoss, a division of Red Hat *
* Copyright 2011, Red Hat Middleware, LLC, and individual *
* contributors as indicated by the @authors tag. See the *
* copyright.txt in the distribution for a full listing of *
* individual contributors. *
* *
* This is free software; you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as *
* published by the Free Software Foundation; either version 2.1 of *
* the License, or (at your option) any later version. *
* *
* This software is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this software; if not, write to the Free *
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA *
* 02110-1301 USA, or see the FSF site: http://www.fsf.org. *
******************************************************************************/
package org.gatein.web.redirect;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import org.exoplatform.container.PortalContainer;
import org.exoplatform.container.xml.InitParams;
import org.exoplatform.container.xml.ValueParam;
import org.exoplatform.portal.mop.SiteKey;
import org.gatein.portal.encoder.EncoderService;
import org.gatein.web.redirect.api.RedirectKey;
import org.gatein.web.redirect.api.RedirectType;
/**
* @author <a href="mailto:mwringe@redhat.com">Matt Wringe</a>
* @version $Revision$
*/
public class RedirectCookieService {
protected static final String DEFAULT_PREFIX = "gtn.site";
protected static final String NAME_PREFERENCE_FLAG = ".preference";
protected static final int DEFAULT_MAXAGE = 2600000; // Approx 1 month
// Redirection cookie settings
protected Integer maxAge;
protected String comment;
protected String path;
protected Boolean secure;
protected String cookiePrefix;
// Service to encode the value of the cookie
private EncoderService encoderService;
public RedirectCookieService(InitParams params) {
ValueParam cookieMaxAgeValueParam = params.getValueParam("redirect.cookie.maxage");
if (cookieMaxAgeValueParam != null) {
this.maxAge = Integer.parseInt(cookieMaxAgeValueParam.getValue());
} else {
this.maxAge = DEFAULT_MAXAGE;
}
ValueParam cookieCommentValueParam = params.getValueParam("redirect.cookie.comment");
if (cookieCommentValueParam != null) {
this.comment = cookieCommentValueParam.getValue();
}
ValueParam cookiePathValueParam = params.getValueParam("redirect.cookie.path");
if (cookiePathValueParam != null) {
this.path = cookiePathValueParam.getValue();
}
ValueParam cookieSecureValueParam = params.getValueParam("redirect.cookie.secure");
if (cookieSecureValueParam != null) {
this.secure = Boolean.parseBoolean(cookieSecureValueParam.getValue());
}
ValueParam cookiePrefixValueParam = params.getValueParam("redirect.cookie.prefix");
if (cookiePrefixValueParam != null) {
cookiePrefix = cookiePrefixValueParam.getValue();
} else {
cookiePrefix = DEFAULT_PREFIX;
}
PortalContainer portalContainer = PortalContainer.getInstance();
this.encoderService = (EncoderService) portalContainer.getComponentInstanceOfType(EncoderService.class);
}
public Cookie createCookie(String originSite, RedirectKey redirect, String cookiePath) {
if (originSite != null && redirect != null) {
String originName = cookiePrefix + NAME_PREFERENCE_FLAG;
String redirectValue;
if (redirect.getType() == RedirectType.REDIRECT) {
redirectValue = redirect.getRedirect();
} else {
redirectValue = originSite;
}
// Encoded value to store illegal characters in cookie
String encodedValue = null;
try {
encodedValue = encoderService.encode64(redirectValue);
} catch (Exception e) {
}
Cookie cookie = new Cookie(originName, (encodedValue == null ? redirectValue : encodedValue));
if (comment != null) {
cookie.setComment(comment);
}
if (path != null) {
cookie.setPath(path);
} else {
cookie.setPath(cookiePath);
}
if (secure != null) {
cookie.setSecure(secure);
}
cookie.setMaxAge(maxAge);
return cookie;
} else {
throw new IllegalArgumentException("RedirectCookie requires that both the origin site [" + originSite
+ "] and the redirect site [" + redirect + "] be not null.");
}
}
public RedirectKey getRedirect(SiteKey origin, HttpServletRequest request) {
if (request.getCookies() != null) {
for (Cookie cookie : request.getCookies()) {
if (cookie.getName().equals(cookiePrefix + NAME_PREFERENCE_FLAG)) {
String decodedValue = null;
try {
decodedValue = encoderService.decode64(cookie.getValue());
} catch (Exception e) {
}
String cookieValue = (decodedValue == null?cookie.getValue():decodedValue);
if (cookieValue.equals(origin.getName())) {
return RedirectKey.noRedirect();
} else {
if (cookieValue != null && !cookieValue.isEmpty()) {
return RedirectKey.redirect(cookieValue);
}
}
break;
}
}
}
return null;
}
}