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339 lines
16 KiB
339 lines
16 KiB
// yacysearch.java
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// -----------------------
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// part of the AnomicHTTPD caching proxy
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// (C) by Michael Peter Christen; mc@anomic.de
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2004
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//
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// $LastChangedDate$
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// $LastChangedRevision$
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// $LastChangedBy$
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// Using this software in any meaning (reading, learning, copying, compiling,
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// running) means that you agree that the Author(s) is (are) not responsible
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// for cost, loss of data or any harm that may be caused directly or indirectly
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// by usage of this softare or this documentation. The usage of this software
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// is on your own risk. The installation and usage (starting/running) of this
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// software may allow other people or application to access your computer and
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// any attached devices and is highly dependent on the configuration of the
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// software which must be done by the user of the software; the author(s) is
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// (are) also not responsible for proper configuration and usage of the
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// software, even if provoked by documentation provided together with
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// the software.
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//
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// Any changes to this file according to the GPL as documented in the file
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// gpl.txt aside this file in the shipment you received can be done to the
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// lines that follows this copyright notice here, but changes must not be
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// done inside the copyright notive above. A re-distribution must contain
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// the intact and unchanged copyright notice.
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// Contributions and changes to the program code must be marked as such.
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//
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// You must compile this file with
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// javac -classpath .:../classes yacysearch.java
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// if the shell's current path is HTROOT
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import java.io.IOException;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.TreeSet;
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import de.anomic.htmlFilter.htmlFilterImageEntry;
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import de.anomic.http.httpHeader;
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import de.anomic.kelondro.kelondroMSetTools;
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import de.anomic.kelondro.kelondroNaturalOrder;
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import de.anomic.plasma.plasmaSearchImages;
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import de.anomic.plasma.plasmaSearchRankingProfile;
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import de.anomic.plasma.plasmaSearchTimingProfile;
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import de.anomic.plasma.plasmaSwitchboard;
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import de.anomic.plasma.plasmaSearchQuery;
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import de.anomic.plasma.plasmaSearchPreOrder;
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import de.anomic.server.serverCore;
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import de.anomic.server.serverDate;
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import de.anomic.server.serverObjects;
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import de.anomic.server.serverSwitch;
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import de.anomic.yacy.yacyCore;
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public class yacysearch {
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public static final int MAX_TOPWORDS = 24;
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public static serverObjects respond(httpHeader header, serverObjects post, serverSwitch env) {
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final plasmaSwitchboard sb = (plasmaSwitchboard) env;
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boolean global = (post == null) ? true : post.get("resource", "global").equals("global");
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final boolean indexDistributeGranted = sb.getConfig("allowDistributeIndex", "true").equals("true");
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final boolean indexReceiveGranted = sb.getConfig("allowReceiveIndex", "true").equals("true");
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if (!indexDistributeGranted || !indexReceiveGranted) { global = false; }
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// case if no values are requested
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final String referer = (String) header.get("Referer");
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if (post == null || env == null) {
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// save referrer
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// System.out.println("HEADER=" + header.toString());
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if (referer != null) {
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URL url;
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try { url = new URL(referer); } catch (MalformedURLException e) { url = null; }
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if ((url != null) && (serverCore.isNotLocal(url))) {
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final HashMap referrerprop = new HashMap();
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referrerprop.put("count", "1");
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referrerprop.put("clientip", header.get("CLIENTIP"));
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referrerprop.put("useragent", header.get("User-Agent"));
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referrerprop.put("date", (new serverDate()).toShortString(false));
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if (sb.facilityDB != null) try { sb.facilityDB.update("backlinks", referer, referrerprop); } catch (IOException e) {}
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}
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}
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// we create empty entries for template strings
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final serverObjects prop = new serverObjects();
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prop.put("former", "");
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prop.put("count", 10);
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prop.put("order", plasmaSearchPreOrder.canUseYBR() ? "YBR-Date-Quality" : "Date-Quality-YBR");
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prop.put("resource", "global");
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prop.put("time", 6);
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prop.put("urlmaskfilter", ".*");
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prop.put("cat", "href");
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prop.put("depth", "0");
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prop.put("type", 0);
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prop.put("type_excluded", 0);
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prop.put("type_num-results", 0);
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prop.put("type_combine", 0);
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prop.put("type_resultbottomline", 0);
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prop.put("type_results", "");
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return prop;
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}
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// SEARCH
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// process search words
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int maxDistance = Integer.MAX_VALUE;
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String querystring = post.get("search", "").trim();
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if ((querystring.length() > 2) && (querystring.charAt(0) == '"') && (querystring.charAt(querystring.length() - 1) == '"')) {
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querystring = querystring.substring(1, querystring.length() - 1).trim();
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maxDistance = 1;
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}
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if (sb.facilityDB != null) try { sb.facilityDB.update("zeitgeist", querystring, post); } catch (Exception e) {}
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serverObjects prop = new serverObjects();
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if (post.get("cat", "href").equals("href")) {
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prop.put("type", 0); // set type of result: normal link list
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final TreeSet query = plasmaSearchQuery.cleanQuery(querystring);
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// filter out stopwords
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final TreeSet filtered = kelondroMSetTools.joinConstructive(query,
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plasmaSwitchboard.stopwords);
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if (filtered.size() > 0) {
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kelondroMSetTools.excludeDestructive(query, plasmaSwitchboard.stopwords);
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}
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// if a minus-button was hit, remove a special reference first
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if (post.containsKey("deleteref")) {
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if (!sb.verifyAuthentication(header, true)) {
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prop.put("AUTHENTICATE", "admin log-in"); // force log-in
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return prop;
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}
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final String delHash = post.get("deleteref", "");
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sb.removeReferences(delHash, query);
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}
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// prepare search order
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final String order = post.get("order", plasmaSearchPreOrder.canUseYBR() ? "YBR-Date-Quality" : "Date-Quality-YBR");
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final int count = Integer.parseInt(post.get("count", "10"));
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final long searchtime = 1000 * Long.parseLong(post.get("time", "10"));
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final boolean yacyonline = ((yacyCore.seedDB != null) && (yacyCore.seedDB.mySeed != null) && (yacyCore.seedDB.mySeed.getAddress() != null));
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String order1 = plasmaSearchRankingProfile.ORDER_DATE;
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String order2 = plasmaSearchRankingProfile.ORDER_YBR;
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String order3 = plasmaSearchRankingProfile.ORDER_QUALITY;
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if (order.startsWith("YBR")) order1 = plasmaSearchRankingProfile.ORDER_YBR;
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if (order.startsWith("Date")) order1 = plasmaSearchRankingProfile.ORDER_DATE;
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if (order.startsWith("Quality")) order1 = plasmaSearchRankingProfile.ORDER_QUALITY;
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if (order.indexOf("-YBR-") > 0) order2 = plasmaSearchRankingProfile.ORDER_YBR;
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if (order.indexOf("-Date-") > 0) order2 = plasmaSearchRankingProfile.ORDER_DATE;
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if (order.indexOf("-Quality-") > 0) order2 = plasmaSearchRankingProfile.ORDER_QUALITY;
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if (order.endsWith("YBR")) order3 = plasmaSearchRankingProfile.ORDER_YBR;
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if (order.endsWith("Date")) order3 = plasmaSearchRankingProfile.ORDER_DATE;
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if (order.endsWith("Quality")) order3 = plasmaSearchRankingProfile.ORDER_QUALITY;
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String urlmask = "";
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if (post.containsKey("urlmask") && post.get("urlmask").equals("no")) {
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urlmask = ".*";
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} else {
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urlmask = (post.containsKey("urlmaskfilter")) ? (String) post.get("urlmaskfilter") : ".*";
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}
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// do the search
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plasmaSearchQuery thisSearch = new plasmaSearchQuery(
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query,
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maxDistance,
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count,
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searchtime,
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urlmask,
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((global) && (yacyonline) && (!(env.getConfig(
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"last-search", "").equals(querystring)))) ? plasmaSearchQuery.SEARCHDOM_GLOBALDHT
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: plasmaSearchQuery.SEARCHDOM_LOCAL, "", 20);
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plasmaSearchRankingProfile ranking = new plasmaSearchRankingProfile( new String[] { order1, order2, order3 });
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plasmaSearchTimingProfile localTiming = new plasmaSearchTimingProfile(4 * thisSearch.maximumTime / 10, thisSearch.wantedResults);
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plasmaSearchTimingProfile remoteTiming = new plasmaSearchTimingProfile(6 * thisSearch.maximumTime / 10, thisSearch.wantedResults);
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prop = sb.searchFromLocal(thisSearch, ranking, localTiming, remoteTiming);
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/*
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* final serverObjects prop = sb.searchFromLocal(query, order1,
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* order2, count, ((global) && (yacyonline) &&
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* (!(env.getConfig("last-search","").equals(querystring)))),
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* searchtime, urlmask);
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*/
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// remember the last search expression
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env.setConfig("last-search", querystring);
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// process result of search
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prop.put("type_resultbottomline", 0);
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if (filtered.size() > 0) {
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prop.put("type_excluded", 1);
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prop.put("type_excluded_stopwords", filtered.toString());
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} else {
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prop.put("type_excluded", 0);
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}
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if (prop == null || prop.size() == 0) {
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if (post.get("search", "").length() < 3) {
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prop.put("type_num-results", 2); // no results - at least 3 chars
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} else {
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prop.put("type_num-results", 1); // no results
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}
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} else {
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final int linkcount = Integer.parseInt(prop.get("type_linkcount", "0"));
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final int orderedcount = Integer.parseInt(prop.get("type_orderedcount", "0"));
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final int totalcount = Integer.parseInt(prop.get("type_totalcount", "0"));
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if (totalcount > 10) {
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final Object[] references = (Object[]) prop.get( "type_references", new String[0]);
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prop.put("type_num-results", 4);
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prop.put("type_num-results_linkcount", linkcount);
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prop.put("type_num-results_orderedcount", orderedcount);
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prop.put("type_num-results_totalcount", totalcount);
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int hintcount = references.length;
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if (hintcount > 0) {
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prop.put("type_combine", 1);
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// get the topwords
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final TreeSet topwords = new TreeSet(kelondroNaturalOrder.naturalOrder);
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String tmp = "";
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for (int i = 0; i < hintcount; i++) {
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tmp = (String) references[i];
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if (!tmp.matches("[0-9]+")) {
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topwords.add(tmp);
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} // omit in the production ?
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}
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// filter out the badwords
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final TreeSet filteredtopwords = kelondroMSetTools.joinConstructive(topwords, plasmaSwitchboard.badwords);
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if (filteredtopwords.size() > 0) {
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kelondroMSetTools.excludeDestructive(topwords, plasmaSwitchboard.badwords);
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}
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String word;
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hintcount = 0;
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final Iterator iter = topwords.iterator();
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while (iter.hasNext()) {
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word = (String) iter.next();
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if (word != null) {
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prop.put("type_combine_words_" + hintcount + "_word", word);
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prop.put("type_combine_words_" + hintcount + "_newsearch", post.get("search", "").replace(' ', '+') + "+" + word);
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prop.put("type_combine_words_" + hintcount + "_count", count);
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prop.put("type_combine_words_" + hintcount + "_order", order);
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prop.put("type_combine_words_" + hintcount + "_resource", ((global) ? "global" : "local"));
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prop.put("type_combine_words_" + hintcount + "_time", (searchtime / 1000));
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}
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prop.put("type_combine_words", hintcount);
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if (hintcount++ > MAX_TOPWORDS) {
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break;
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}
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}
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}
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} else {
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if (totalcount == 0) {
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prop.put("type_num-results", 3); // long
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} else {
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prop.put("type_num-results", 4);
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prop.put("type_num-results_linkcount", linkcount);
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prop.put("type_num-results_orderedcount", orderedcount);
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prop.put("type_num-results_totalcount", totalcount);
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}
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}
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}
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if (yacyonline) {
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if (global) {
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prop.put("type_resultbottomline", 1);
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prop.put("type_resultbottomline_globalresults", prop.get("type_globalresults", "0"));
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} else {
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prop.put("type_resultbottomline", 2);
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}
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} else {
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if (global) {
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prop.put("type_resultbottomlien", 3);
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} else {
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prop.put("type_resultbottomline", 4);
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}
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}
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prop.put("former", post.get("search", ""));
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prop.put("count", count);
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prop.put("order", order);
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prop.put("resource", (global) ? "global" : "local");
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prop.put("time", searchtime / 1000);
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prop.put("urlmaskfilter", urlmask);
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prop.put("type", "0");
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prop.put("cat", "href");
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prop.put("depth", "0");
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// adding some additional properties needed for the rss feed
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String hostName = (String) header.get("Host", "localhost");
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if (hostName.indexOf(":") == -1) hostName += ":" + serverCore.getPortNr(env.getConfig("port", "8080"));
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prop.put("rssYacyImageURL", "http://" + hostName + "/env/grafics/yacy.gif");
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}
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if ((post.get("cat", "href").equals("image")) && (querystring.startsWith("http://"))) {
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int depth = post.getInt("depth", 0);
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URL url = null;
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try {url = new URL(querystring);} catch (MalformedURLException e) {}
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plasmaSearchImages si = new plasmaSearchImages(sb.snippetCache, 6000, url, depth);
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Iterator i = si.entries();
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htmlFilterImageEntry ie;
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int c = 0;
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while (i.hasNext()) {
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ie = (htmlFilterImageEntry) i.next();
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prop.put("type_results_" + c + "_url", ie.url().toString());
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c++;
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}
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prop.put("type_results", c);
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prop.put("cat", "image");
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prop.put("type", 1); // set type of result: image list
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prop.put("former", post.get("search", ""));
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prop.put("depth", depth);
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}
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// return rewrite properties
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return prop;
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}
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}
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