/* Licensed 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.
*/
package org.riotfamily.search.site;
import org.riotfamily.common.web.support.ServletUtils;
import org.riotfamily.crawler.LinkFilter;
import org.riotfamily.pages.model.Site;
/**
* {@link LinkFilter} that only accepts links that refer to a {@link Site}.
* @author Felix Gnass [fgnass at neteye dot de]
*/
public class SiteLinkFilter implements LinkFilter {
private SiteIdentifier siteIdentifier;
public SiteLinkFilter(SiteIdentifier siteIdentifier) {
this.siteIdentifier = siteIdentifier;
}
public boolean accept(String base, String href) {
if (!ServletUtils.isAbsoluteUrl(href)) {
// Always follow relative links
return true;
}
String host = ServletUtils.getHost(href);
if (host == null) {
// Scheme but no host - must be something link javascript: or mailto:
return false;
}
if (base != null) {
String baseHost = ServletUtils.getHost(base);
if (host.equals(baseHost)) {
// Absolute link to same host so we follow it ...
return true;
}
}
// Other host - check if it belongs to one of our sites ...
return siteIdentifier.isSiteHost(host);
}
}