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yacy_search_server/htroot/CacheAdmin_p.java

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14 KiB

// CacheAdmin_p.java
// -----------------------
// part of the AnomicHTTPD caching proxy
// (C) by Michael Peter Christen; mc@anomic.de
// first published on http://www.anomic.de
// Frankfurt, Germany, 2004
//
// $LastChangedDate$
// $LastChangedRevision$
// $LastChangedBy$
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Using this software in any meaning (reading, learning, copying, compiling,
// running) means that you agree that the Author(s) is (are) not responsible
// for cost, loss of data or any harm that may be caused directly or indirectly
// by usage of this softare or this documentation. The usage of this software
// is on your own risk. The installation and usage (starting/running) of this
// software may allow other people or application to access your computer and
// any attached devices and is highly dependent on the configuration of the
// software which must be done by the user of the software; the author(s) is
// (are) also not responsible for proper configuration and usage of the
// software, even if provoked by documentation provided together with
// the software.
//
// Any changes to this file according to the GPL as documented in the file
// gpl.txt aside this file in the shipment you received can be done to the
// lines that follows this copyright notice here, but changes must not be
// done inside the copyright notive above. A re-distribution must contain
// the intact and unchanged copyright notice.
// Contributions and changes to the program code must be marked as such.
// You must compile this file with
// javac -classpath .:../classes CacheAdmin_p.java
// if the shell's current path is HTROOT
import java.io.File;
import java.io.Writer;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.Map;
import java.util.TreeSet;
import de.anomic.htmlFilter.htmlFilterContentScraper;
import de.anomic.htmlFilter.htmlFilterImageEntry;
import de.anomic.htmlFilter.htmlFilterWriter;
import de.anomic.http.httpHeader;
import de.anomic.net.URL;
import de.anomic.plasma.plasmaParserDocument;
import de.anomic.plasma.plasmaSwitchboard;
import de.anomic.plasma.cache.IResourceInfo;
import de.anomic.server.serverCore;
import de.anomic.server.serverFileUtils;
import de.anomic.server.serverObjects;
import de.anomic.server.serverSwitch;
public class CacheAdmin_p {
public static serverObjects respond(httpHeader header, serverObjects post, serverSwitch env) {
final plasmaSwitchboard switchboard = (plasmaSwitchboard) env;
final serverObjects prop = new serverObjects();
final String action = ((post == null) ? "info" : post.get("action", "info"));
String pathString = ((post == null) ? "" : post.get("path", "/"));
// String pathString = ((post == null) ? "" : post.get("path", "/").replaceAll("//", "/")); // where is the BUG ?
// don't left the htCachePath
File file = new File(switchboard.htCachePath, pathString);
try {
if (!file.getCanonicalPath().startsWith(switchboard.htCachePath.getCanonicalPath())) {
pathString = "/";
file = new File(switchboard.htCachePath, pathString);
}
} catch (Exception e) {
pathString = "/";
file = new File(switchboard.htCachePath, pathString);
}
final StringBuffer path = new StringBuffer(256);
final StringBuffer tree = new StringBuffer();
final StringBuffer info = new StringBuffer();
final URL url = switchboard.cacheManager.getURL(file);
String urlstr = "";
if (action.equals("info") && !file.isDirectory()) {
prop.put("info", 0);
path.append((pathString.length() == 0) ? linkPathString("/", true) : linkPathString(pathString, false));
urlstr = url.toNormalform();
prop.put("info_url", urlstr);
info.ensureCapacity(40000);
try {
final IResourceInfo resInfo = switchboard.cacheManager.loadResourceInfo(url);
info.append("<b>HTTP Header:</b><br>").append(formatHeader(resInfo.getMap())).append("<br>");
final String ff = file.toString();
final int dotpos = ff.lastIndexOf('.');
final String ext = (dotpos >= 0) ? ff.substring(dotpos + 1).toLowerCase() : "";
if (ext.equals("gif") || ext.equals("jpg") ||
ext.equals("png") || ext.equals("jpeg")) {
info.append("<img src=\"" + "CacheResource_p.html?path=").append(pathString).append("\">");
} else {
final htmlFilterContentScraper scraper = new htmlFilterContentScraper(url);
//final OutputStream os = new htmlFilterOutputStream(null, scraper, null, false);
Writer writer = new htmlFilterWriter(null,null,scraper,null,false);
String sourceCharset = resInfo.getCharacterEncoding();
if (sourceCharset == null) sourceCharset = "UTF-8";
String mimeType = resInfo.getMimeType();
serverFileUtils.copy(file, sourceCharset, writer);
writer.close();
final plasmaParserDocument document = switchboard.parser.transformScraper(url, mimeType, sourceCharset, scraper);
info.append("<b>TITLE:</b><br>").append(scraper.getTitle()).append("<br>").append("<br>")
.append("<b>SECTION HEADLINES:</b><br>").append(formatTitles(document.getSectionTitles())).append("<br>")
.append("<b>HREF:</b><br>").append(formatAnchor(document.getHyperlinks())).append("<br>")
.append("<b>IMAGE:</b><br>").append(formatImageAnchor(document.getImages())).append("<br>")
.append("<b>AUDIO:</b><br>").append(formatAnchor(document.getAudiolinks())).append("<br>")
.append("<b>VIDEO:</b><br>").append(formatAnchor(document.getVideolinks())).append("<br>")
.append("<b>APPS:</b><br>").append(formatAnchor(document.getApplinks())).append("<br>")
.append("<b>EMAIL:</b><br>").append(formatAnchor(document.getEmaillinks())).append("<br>")
.append("<b>TEXT:</b><br><span class=\"small\">").append(new String(scraper.getText())).append("</span><br>")
.append("<b>LINES:</b><br><span class=\"small\">");
final Enumeration sentences = document.getSentences(false);
if (sentences != null) while (sentences.hasMoreElements()) {
info.append((String) sentences.nextElement()).append("<br>");
}
info.append("</span><br>");
if (document != null) document.close();
}
} catch (Exception e) {
info.append("- This file is not cached -<br><br>");
info.append(e.toString());
e.printStackTrace();
}
} else {
prop.put("info", 1);
File dir;
if (file.isDirectory()) {
dir = file;
} else {
dir = file.getParentFile();
pathString = (new File(pathString)).getParent().replace('\\','/');
}
// generate sorted dir/file listing
final String[] list = dir.list();
tree.ensureCapacity((list == null) ? 70 : (list.length + 1) * 256);
path.append((pathString.length() == 0) ? linkPathString("/", true) : linkPathString(pathString, true));
if (list == null) {
tree.append("[empty]");
} else {
final TreeSet dList = new TreeSet();
final TreeSet fList = new TreeSet();
File object;
int size = list.length - 1;
for (int i = size; i >= 0 ; i--) { // Rueckwaerts ist schneller
object = new File(dir, list[i]);
if (!object.getName().equalsIgnoreCase("responseHeader.db")) {
if (object.isDirectory()) {
dList.add(list[i]);
} else {
fList.add(list[i]);
}
}
}
Iterator iter = dList.iterator();
String str;
while (iter.hasNext()) {
str = iter.next().toString();
tree.append("<img src=\"/env/grafics/folderIconSmall.gif\" align=\"top\" alt=\"Folder\">&nbsp;<a href=\"CacheAdmin_p.html?action=info&path=").append(pathString).append("/").append(str).append("\" class=\"tt\"><bobr>").append(str).append("</bobr></a><br>").append(serverCore.crlfString);
}
iter = fList.iterator();
while (iter.hasNext()) {
str = iter.next().toString();
tree.append("<img src=\"/env/grafics/fileIconSmall.gif\" align=\"top\" alt=\"File\">&nbsp;<a href=\"CacheAdmin_p.html?action=info&path=").append(pathString).append("/").append(str).append("\" class=\"tt\"><bobr>").append(str).append("</bobr></a><br>").append(serverCore.crlfString);
}
}
}
prop.put("cachesize", Long.toString(switchboard.cacheManager.curCacheSize/1024));
prop.put("cachemax", Long.toString(switchboard.cacheManager.maxCacheSize/1024));
prop.put("path", path.toString());
prop.put("info_info", info.toString());
prop.put("info_tree", tree.toString());
// return rewrite properties
return prop;
}
private static String formatTitles(String[] titles) {
StringBuffer s = new StringBuffer();
s.append("<ul>");
for (int i = 0; i < titles.length; i++) {
s.append("<li>").append(titles[i]).append("</li>");
}
s.append("</ul>");
return new String(s);
}
private static String formatHeader(Map header) {
final StringBuffer result = new StringBuffer(2048);
if (header == null) {
result.append("- no header in header cache -<br>");
} else {
result.append("<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">");
final Iterator iter = header.entrySet().iterator();
Map.Entry entry;
while (iter.hasNext()) {
entry = (Map.Entry) iter.next();
result.append("<tr valign=\"top\"><td class=\"tt\">").append(entry.getKey()).append("</td><td class=\"tt\">&nbsp;=&nbsp;</td><td class=\"tt\">").append(entry.getValue()).append("</td></tr>");
}
result.append("</table>");
}
return result.toString();
}
private static String formatAnchor(Map anchor) {
final StringBuffer result = new StringBuffer((anchor.entrySet().size() + 1) * 256);
result.append("<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">");
final Iterator iter = anchor.entrySet().iterator();
String url, descr;
Map.Entry entry;
while (iter.hasNext()) {
entry = (Map.Entry) iter.next();
url = (String) entry.getKey();
descr = ((String) entry.getValue()).trim();
if (descr.length() == 0) { descr = "-"; }
result.append("<tr valign=\"top\"><td><span class=\"small\">").append(descr).append("&nbsp;</span></td><td class=\"tt\">").append(url).append("</td></tr>");
}
return result.append("</table>").toString();
}
private static String formatImageAnchor(TreeSet anchor) {
final StringBuffer result = new StringBuffer((anchor.size() + 1) * 256);
result.append("<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">");
final Iterator iter = anchor.iterator();
htmlFilterImageEntry ie;
while (iter.hasNext()) {
ie = (htmlFilterImageEntry) iter.next();
result.append("<tr valign=\"top\"><td><span class=\"small\">").append(ie.alt()).append("&nbsp;</span></td><td class=\"tt\">").append(ie.url().toNormalform()).append("</td></tr>");
}
return result.append("</table>").toString();
}
private static String linkPathString(String path, boolean dir){
final String[] elements = path.split("/");
final StringBuffer tmpstr = new StringBuffer(256);
final StringBuffer result = new StringBuffer(elements.length + 1 * 128);
int i, e;
if (dir) { e = elements.length; } else { e = elements.length - 1; }
for(i = 0; i < e; i++) {
if (!elements[i].equals("")) {
tmpstr.append(elements[i]).append("/");
result.append("<a href=\"CacheAdmin_p.html?action=info&path=").append(tmpstr).append("\" class=\"tt\">").append(elements[i]).append("/</a>");
}
}
return result.toString();
}
}