/*
* This file is part of the Wayback archival access software
* (http://archive-access.sourceforge.net/projects/wayback/).
*
* Licensed to the Internet Archive (IA) by one or more individual
* contributors.
*
* The IA licenses this file to You 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.archive.wayback.replay;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.archive.wayback.ResultURIConverter;
import org.archive.wayback.core.CaptureSearchResult;
import org.archive.wayback.util.url.UrlOperations;
/**
*
*
* @author brad
* @version $Date$, $Revision$
*/
public class RedirectRewritingHttpHeaderProcessor
implements HttpHeaderProcessor {
private static String DEFAULT_PREFIX = null;
private String prefix = DEFAULT_PREFIX;
private Set<String> passThroughHeaders = null;
private Set<String> rewriteHeaders = null;
public RedirectRewritingHttpHeaderProcessor() {
passThroughHeaders = new HashSet<String>();
passThroughHeaders.add(HTTP_CONTENT_TYPE_HEADER_UP);
passThroughHeaders.add(HTTP_CONTENT_DISP_HEADER_UP);
rewriteHeaders = new HashSet<String>();
rewriteHeaders.add(HTTP_LOCATION_HEADER_UP);
rewriteHeaders.add(HTTP_CONTENT_LOCATION_HEADER_UP);
rewriteHeaders.add(HTTP_CONTENT_BASE_HEADER_UP);
}
public String getPrefix() {
return prefix;
}
public void setPrefix(String prefix) {
this.prefix = prefix;
}
/* (non-Javadoc)
* @see org.archive.wayback.replay.HttpHeaderProcessor#filter(java.util.Map, java.lang.String, java.lang.String, org.archive.wayback.ResultURIConverter, org.archive.wayback.core.CaptureSearchResult)
*/
public void filter(Map<String, String> output, String key, String value,
ResultURIConverter uriConverter, CaptureSearchResult result) {
String keyUp = key.toUpperCase();
// first stick it in as-is, or with prefix, then maybe we'll overwrite
// with the later logic.
if(prefix == null) {
if(!keyUp.equals(HTTP_LENGTH_HEADER_UP)) {
output.put(key, value);
}
} else {
output.put(prefix + key, value);
}
// rewrite Location header URLs
if(rewriteHeaders.contains(keyUp)) {
// if (keyUp.startsWith(HTTP_LOCATION_HEADER_UP) ||
// keyUp.startsWith(HTTP_CONTENT_LOCATION_HEADER_UP) ||
// keyUp.startsWith(HTTP_CONTENT_BASE_HEADER_UP)) {
String baseUrl = result.getOriginalUrl();
String cd = result.getCaptureTimestamp();
// by the spec, these should be absolute already, but just in case:
String u = UrlOperations.resolveUrl(baseUrl, value);
output.put(key, uriConverter.makeReplayURI(cd,u));
// } else if(keyUp.startsWith(HTTP_CONTENT_TYPE_HEADER_UP)) {
} else if(passThroughHeaders.contains(keyUp)) {
// let's leave this one as-is:
output.put(key,value);
}
}
}