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424 lines
22 KiB
424 lines
22 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.util.HashMap;
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import java.util.TreeSet;
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import de.anomic.http.httpHeader;
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import de.anomic.index.indexURLEntry;
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import de.anomic.kelondro.kelondroBitfield;
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import de.anomic.kelondro.kelondroMSetTools;
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import de.anomic.plasma.plasmaCondenser;
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import de.anomic.plasma.plasmaParserDocument;
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import de.anomic.plasma.plasmaSearchEvent;
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import de.anomic.plasma.plasmaSearchQuery;
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import de.anomic.plasma.plasmaSearchRankingProfile;
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import de.anomic.plasma.plasmaSnippetCache;
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import de.anomic.plasma.plasmaSwitchboard;
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import de.anomic.server.serverCore;
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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.server.logging.serverLog;
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import de.anomic.tools.yFormatter;
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import de.anomic.yacy.yacyCore;
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import de.anomic.yacy.yacyNewsPool;
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import de.anomic.yacy.yacyNewsRecord;
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import de.anomic.yacy.yacyURL;
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public class yacysearch {
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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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sb.localSearchLastAccess = System.currentTimeMillis();
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boolean searchAllowed = sb.getConfigBool("publicSearchpage", true) || sb.verifyAuthentication(header, false);
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boolean authenticated = sb.adminAuthenticated(header) >= 2;
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int display = (post == null) ? 0 : post.getInt("display", 0);
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if ((display == 1) && (!authenticated)) display = 0;
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int input = (post == null) ? 2 : post.getInt("input", 2);
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String promoteSearchPageGreeting = env.getConfig("promoteSearchPageGreeting", "");
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if (env.getConfigBool("promoteSearchPageGreeting.useNetworkName", false)) promoteSearchPageGreeting = env.getConfig("network.unit.description", "");
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if (promoteSearchPageGreeting.length() == 0) promoteSearchPageGreeting = "P2P WEB SEARCH";
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// get query
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String querystring = (post == null) ? "" : post.get("search", "").trim();
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boolean rss = (post == null) ? false : post.get("rss", "false").equals("true");
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if ((post == null) || (env == null) || (querystring.length() == 0) || (!searchAllowed)) {
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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("searchagain", "0");
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prop.put("input", input);
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prop.put("display", display);
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prop.put("input_input", input);
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prop.put("input_display", display);
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prop.put("input_promoteSearchPageGreeting", promoteSearchPageGreeting);
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prop.put("input_former", "");
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prop.put("former", "");
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prop.put("input_count", "10");
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prop.put("input_offset", "0");
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prop.put("input_resource", "global");
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prop.put("input_urlmaskfilter", ".*");
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prop.put("input_prefermaskfilter", "");
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prop.put("input_indexof", "off");
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prop.put("input_constraint", "");
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prop.put("input_cat", "href");
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prop.put("input_depth", "0");
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prop.put("input_contentdom", "text");
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prop.put("input_contentdomCheckText", "1");
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prop.put("input_contentdomCheckAudio", "0");
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prop.put("input_contentdomCheckVideo", "0");
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prop.put("input_contentdomCheckImage", "0");
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prop.put("input_contentdomCheckApp", "0");
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prop.put("excluded", "0");
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prop.put("results", "");
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prop.put("resultTable", "0");
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prop.put("num-results", searchAllowed ? "0" : "4");
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return prop;
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}
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// collect search attributes
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int maxDistance = Integer.MAX_VALUE;
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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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int itemsPerPage = post.getInt("count", 10);
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int offset = post.getInt("offset", 0);
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boolean global = (post == null) ? true : post.get("resource", "global").equals("global");
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final boolean indexof = post.get("indexof","").equals("on");
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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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String prefermask = post.get("prefermaskfilter", "");
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if ((prefermask.length() > 0) && (prefermask.indexOf(".*") < 0)) prefermask = ".*" + prefermask + ".*";
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kelondroBitfield constraint = ((post.containsKey("constraint")) && (post.get("constraint", "").length() > 0)) ? new kelondroBitfield(4, post.get("constraint", "______")) : null;
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if (indexof) {
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constraint = new kelondroBitfield(4);
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constraint.set(plasmaCondenser.flag_cat_indexof, true);
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}
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// SEARCH
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//final boolean indexDistributeGranted = sb.getConfig(plasmaSwitchboard.INDEX_DIST_ALLOW, "true").equals("true");
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//final boolean indexReceiveGranted = sb.getConfig("allowReceiveIndex", "true").equals("true");
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//final boolean offline = yacyCore.seedDB.mySeed().isVirgin();
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final boolean clustersearch = sb.isRobinsonMode() &&
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(sb.getConfig("cluster.mode", "").equals("privatecluster") ||
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sb.getConfig("cluster.mode", "").equals("publiccluster"));
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//if (offline || !indexDistributeGranted || !indexReceiveGranted) { global = false; }
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if (clustersearch) global = true; // switches search on, but search target is limited to cluster nodes
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// find search domain
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int contentdomCode = plasmaSearchQuery.contentdomParser(post.get("contentdom", "text"));
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// patch until better search profiles are available
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if ((contentdomCode != plasmaSearchQuery.CONTENTDOM_TEXT) && (itemsPerPage <= 30)) itemsPerPage = 30;
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serverObjects prop = new serverObjects();
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if (post.get("cat", "href").equals("href")) {
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final TreeSet<String>[] query = plasmaSearchQuery.cleanQuery(querystring); // converts also umlaute
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boolean near = (query[0].contains("near")) && (querystring.indexOf("NEAR") >= 0);
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if (near) {
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query[0].remove("near");
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}
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plasmaSearchRankingProfile ranking = sb.getRanking();
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if (near) {
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ranking.coeff_worddistance = plasmaSearchRankingProfile.COEFF_MAX;
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}
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// filter out stopwords
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final TreeSet<String> filtered = kelondroMSetTools.joinConstructive(query[0], plasmaSwitchboard.stopwords);
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if (filtered.size() > 0) {
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kelondroMSetTools.excludeDestructive(query[0], 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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// delete the index entry locally
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final String delHash = post.get("deleteref", ""); // urlhash
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sb.wordIndex.removeWordReferences(query[0], delHash);
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// make new news message with negative voting
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HashMap<String, String> map = new HashMap<String, String>();
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map.put("urlhash", delHash);
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map.put("vote", "negative");
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map.put("refid", "");
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yacyCore.newsPool.publishMyNews(yacyNewsRecord.newRecord(yacyNewsPool.CATEGORY_SURFTIPP_VOTE_ADD, map));
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}
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// if a plus-button was hit, create new voting message
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if (post.containsKey("recommendref")) {
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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 recommendHash = post.get("recommendref", ""); // urlhash
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indexURLEntry urlentry = sb.wordIndex.loadedURL.load(recommendHash, null, 0);
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if (urlentry != null) {
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indexURLEntry.Components comp = urlentry.comp();
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plasmaParserDocument document;
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document = plasmaSnippetCache.retrieveDocument(comp.url(), true, 5000, true);
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if (document != null) {
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// create a news message
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HashMap<String, String> map = new HashMap<String, String>();
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map.put("url", comp.url().toNormalform(false, true).replace(',', '|'));
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map.put("title", comp.dc_title().replace(',', ' '));
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map.put("description", ((document == null) ? comp.dc_title() : document.dc_title()).replace(',', ' '));
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map.put("author", ((document == null) ? "" : document.dc_creator()));
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map.put("tags", ((document == null) ? "" : document.dc_subject(' ')));
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yacyCore.newsPool.publishMyNews(yacyNewsRecord.newRecord(yacyNewsPool.CATEGORY_SURFTIPP_ADD, map));
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document.close();
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}
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}
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}
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// prepare search properties
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final boolean yacyonline = ((yacyCore.seedDB != null) && (yacyCore.seedDB.mySeed() != null) && (yacyCore.seedDB.mySeed().getPublicAddress() != null));
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final boolean globalsearch = (global) && (yacyonline);
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// do the search
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TreeSet<String> queryHashes = plasmaCondenser.words2hashes(query[0]);
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plasmaSearchQuery theQuery = new plasmaSearchQuery(
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querystring,
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queryHashes,
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plasmaCondenser.words2hashes(query[1]),
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ranking,
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maxDistance,
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prefermask,
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contentdomCode,
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true,
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itemsPerPage,
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offset,
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urlmask,
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(clustersearch && globalsearch) ? plasmaSearchQuery.SEARCHDOM_CLUSTERALL :
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((globalsearch) ? plasmaSearchQuery.SEARCHDOM_GLOBALDHT : plasmaSearchQuery.SEARCHDOM_LOCAL),
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"",
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20,
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constraint,
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true);
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String client = (String) header.get("CLIENTIP"); // the search client who initiated the search
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// tell all threads to do nothing for a specific time
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sb.intermissionAllThreads(10000);
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// filter out words that appear in bluelist
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theQuery.filterOut(plasmaSwitchboard.blueList);
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// log
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serverLog.logInfo("LOCAL_SEARCH", "INIT WORD SEARCH: " + theQuery.queryString + ":" + theQuery.queryHashes + " - " + theQuery.neededResults() + " links to be computed, " + theQuery.displayResults() + " lines to be displayed");
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long timestamp = System.currentTimeMillis();
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// create a new search event
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if (plasmaSearchEvent.getEvent(theQuery.id(false)) == null) {
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theQuery.setOffset(0); // in case that this is a new search, always start without a offset
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offset = 0;
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}
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plasmaSearchEvent theSearch = plasmaSearchEvent.getEvent(theQuery, ranking, sb.wordIndex, (sb.isRobinsonMode()) ? sb.clusterhashes : null, false);
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// generate result object
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serverLog.logFine("LOCAL_SEARCH", "SEARCH TIME AFTER ORDERING OF SEARCH RESULTS: " + ((System.currentTimeMillis() - timestamp) / 1000) + " seconds");
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serverLog.logFine("LOCAL_SEARCH", "SEARCH TIME AFTER RESULT PREPARATION: " + ((System.currentTimeMillis() - timestamp) / 1000) + " seconds");
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// calc some more cross-reference
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serverLog.logFine("LOCAL_SEARCH", "SEARCH TIME AFTER XREF PREPARATION: " + ((System.currentTimeMillis() - timestamp) / 1000) + " seconds");
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// log
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serverLog.logInfo("LOCAL_SEARCH", "EXIT WORD SEARCH: " + theQuery.queryString + " - " +
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(theSearch.getRankingResult().getLocalResourceSize() + theSearch.getRankingResult().getRemoteResourceSize()) + " links found, " +
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((System.currentTimeMillis() - timestamp) / 1000) + " seconds");
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// prepare search statistics
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Long trackerHandle = new Long(System.currentTimeMillis());
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HashMap<String, Object> searchProfile = theQuery.resultProfile(theSearch.getRankingResult().getLocalResourceSize() + theSearch.getRankingResult().getRemoteResourceSize(), System.currentTimeMillis() - timestamp, theSearch.getURLRetrievalTime(), theSearch.getSnippetComputationTime());
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searchProfile.put("querystring", theQuery.queryString);
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searchProfile.put("time", trackerHandle);
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searchProfile.put("host", client);
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searchProfile.put("offset", new Integer(0));
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sb.localSearches.add(searchProfile);
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TreeSet<Long> handles = sb.localSearchTracker.get(client);
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if (handles == null) handles = new TreeSet<Long>();
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handles.add(trackerHandle);
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sb.localSearchTracker.put(client, handles);
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prop = new serverObjects();
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int totalcount = theSearch.getRankingResult().getLocalResourceSize() + theSearch.getRankingResult().getRemoteResourceSize();
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prop.put("num-results_offset", offset);
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prop.put("num-results_itemscount", "0");
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prop.put("num-results_itemsPerPage", itemsPerPage);
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prop.put("num-results_totalcount", yFormatter.number(totalcount, !rss));
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prop.put("num-results_globalresults", (globalsearch) ? "1" : "0");
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prop.put("num-results_globalresults_localResourceSize", yFormatter.number(theSearch.getRankingResult().getLocalResourceSize(), !rss));
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prop.put("num-results_globalresults_remoteResourceSize", yFormatter.number(theSearch.getRankingResult().getRemoteResourceSize(), !rss));
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prop.put("num-results_globalresults_remoteIndexCount", yFormatter.number(theSearch.getRankingResult().getRemoteIndexCount(), !rss));
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prop.put("num-results_globalresults_remotePeerCount", yFormatter.number(theSearch.getRankingResult().getRemotePeerCount(), !rss));
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// compose page navigation
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StringBuffer resnav = new StringBuffer();
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int thispage = offset / theQuery.displayResults();
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if (thispage == 0) resnav.append("< "); else {
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resnav.append(navurla(thispage - 1, display, theQuery));
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resnav.append("<strong><</strong></a> ");
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}
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int numberofpages = Math.min(10, Math.max(thispage + 2, totalcount / theQuery.displayResults()));
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for (int i = 0; i < numberofpages; i++) {
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if (i == thispage) {
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resnav.append("<strong>");
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resnav.append(i + 1);
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resnav.append("</strong> ");
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} else {
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resnav.append(navurla(i, display, theQuery));
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resnav.append(i + 1);
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resnav.append("</a> ");
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}
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}
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if (thispage >= numberofpages) resnav.append(">"); else {
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resnav.append(navurla(thispage + 1, display, theQuery));
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resnav.append("<strong>></strong></a>");
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}
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prop.put("num-results_resnav", resnav.toString());
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// generate the search result lines; they will be produced by another servlet
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for (int i = 0; i < theQuery.displayResults(); i++) {
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prop.put("results_" + i + "_item", offset + i);
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prop.put("results_" + i + "_eventID", theQuery.id(false));
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}
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prop.put("results", theQuery.displayResults());
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prop.put("resultTable", (contentdomCode <= 1) ? "0" : "1");
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prop.put("eventID", theQuery.id(false)); // for bottomline
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// process result of search
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if (filtered.size() > 0) {
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prop.put("excluded", "1");
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prop.putHTML("excluded_stopwords", filtered.toString());
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} else {
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prop.put("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("num-results", "2"); // no results - at least 3 chars
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} else {
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prop.put("num-results", "1"); // no results
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}
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} else {
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prop.put("num-results", "3");
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}
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prop.put("input_cat", "href");
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prop.put("input_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("searchBaseURL", "http://" + hostName + "/yacysearch.html");
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prop.put("rssYacyImageURL", "http://" + hostName + "/env/grafics/yacy.gif");
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}
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prop.put("searchagain", global ? "1" : "0");
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prop.put("input", input);
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prop.put("display", display);
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prop.put("input_input", input);
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prop.put("input_display", display);
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prop.put("input_promoteSearchPageGreeting", promoteSearchPageGreeting);
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prop.putHTML("input_former", querystring);
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//prop.put("former", post.get("search", ""));
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prop.put("input_count", itemsPerPage);
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prop.put("input_offset", offset);
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prop.put("input_resource", global ? "global" : "local");
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prop.putHTML("input_urlmaskfilter", urlmask);
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prop.putHTML("input_prefermaskfilter", prefermask);
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prop.put("input_indexof", (indexof) ? "on" : "off");
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prop.put("input_constraint", (constraint == null) ? "" : constraint.exportB64());
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prop.put("input_contentdom", post.get("contentdom", "text"));
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prop.put("input_contentdomCheckText", (contentdomCode == plasmaSearchQuery.CONTENTDOM_TEXT) ? "1" : "0");
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prop.put("input_contentdomCheckAudio", (contentdomCode == plasmaSearchQuery.CONTENTDOM_AUDIO) ? "1" : "0");
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prop.put("input_contentdomCheckVideo", (contentdomCode == plasmaSearchQuery.CONTENTDOM_VIDEO) ? "1" : "0");
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prop.put("input_contentdomCheckImage", (contentdomCode == plasmaSearchQuery.CONTENTDOM_IMAGE) ? "1" : "0");
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prop.put("input_contentdomCheckApp", (contentdomCode == plasmaSearchQuery.CONTENTDOM_APP) ? "1" : "0");
|
|
|
|
// for RSS: don't HTML encode some elements
|
|
prop.putHTML("rss_query", querystring, true);
|
|
prop.put("rss_queryenc", yacyURL.escape(querystring.replace(' ', '+')));
|
|
|
|
sb.localSearchLastAccess = System.currentTimeMillis();
|
|
|
|
// return rewrite properties
|
|
return prop;
|
|
}
|
|
|
|
private static String navurla(int page, int display, plasmaSearchQuery theQuery) {
|
|
return
|
|
"<a href=\"yacysearch.html?display=" + display +
|
|
"&search=" + theQuery.queryString() +
|
|
"&count="+ theQuery.displayResults() +
|
|
"&offset=" + (page * theQuery.displayResults()) +
|
|
"&resource=" + theQuery.searchdom() +
|
|
"&urlmaskfilter=" + theQuery.urlMask +
|
|
"&prefermaskfilter=" + theQuery.prefer +
|
|
"&cat=href&constraint=" + ((theQuery.constraint == null) ? "" : theQuery.constraint.exportB64()) +
|
|
"&contentdom=" + theQuery.contentdom() +
|
|
"&former=" + theQuery.queryString() + "\">";
|
|
}
|
|
}
|