// yacysearch.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 yacysearch.java // if the shell's current path is HTROOT import java.io.IOException; import java.net.MalformedURLException; import java.util.HashMap; import java.util.TreeSet; import de.anomic.data.htmlTools; import de.anomic.http.httpHeader; import de.anomic.index.indexURLEntry; import de.anomic.kelondro.kelondroBitfield; import de.anomic.kelondro.kelondroMSetTools; import de.anomic.plasma.plasmaCondenser; import de.anomic.plasma.plasmaParserDocument; import de.anomic.plasma.plasmaSearchEvent; import de.anomic.plasma.plasmaSearchQuery; import de.anomic.plasma.plasmaSearchRankingProfile; import de.anomic.plasma.plasmaSearchProcessing; import de.anomic.plasma.plasmaSnippetCache; import de.anomic.plasma.plasmaSwitchboard; import de.anomic.server.serverCore; import de.anomic.server.serverDate; import de.anomic.server.serverObjects; import de.anomic.server.serverSwitch; import de.anomic.server.logging.serverLog; import de.anomic.tools.crypt; import de.anomic.yacy.yacyCore; import de.anomic.yacy.yacyNewsPool; import de.anomic.yacy.yacyNewsRecord; import de.anomic.yacy.yacyURL; public class yacysearch { public static serverObjects respond(httpHeader header, serverObjects post, serverSwitch env) { final plasmaSwitchboard sb = (plasmaSwitchboard) env; boolean searchAllowed = sb.getConfigBool("publicSearchpage", true) || sb.verifyAuthentication(header, false); boolean authenticated = sb.adminAuthenticated(header) >= 2; int display = (post == null) ? 0 : post.getInt("display", 0); if ((display == 1) && (!authenticated)) display = 0; int input = (post == null) ? 2 : post.getInt("input", 2); String promoteSearchPageGreeting = env.getConfig("promoteSearchPageGreeting", ""); if (promoteSearchPageGreeting.length() == 0) promoteSearchPageGreeting = "P2P WEB SEARCH"; // case if no values are requested final String referer = (String) header.get("Referer"); String querystring = (post == null) ? "" : post.get("search", "").trim(); if ((post == null) || (env == null) || (querystring.length() == 0) || (!searchAllowed)) { // save referrer // System.out.println("HEADER=" + header.toString()); if (referer != null) { yacyURL url; try { url = new yacyURL(referer, null); } catch (MalformedURLException e) { url = null; } if ((url != null) && (!url.isLocal())) { final HashMap referrerprop = new HashMap(); referrerprop.put("count", "1"); referrerprop.put("clientip", header.get("CLIENTIP")); referrerprop.put("useragent", header.get("User-Agent")); referrerprop.put("date", (new serverDate()).toShortString(false)); if (sb.facilityDB != null) try { sb.facilityDB.update("backlinks", referer, referrerprop); } catch (IOException e) {} } } // we create empty entries for template strings final serverObjects prop = new serverObjects(); prop.put("searchagain", 0); prop.put("input", input); prop.put("display", display); prop.put("input_input", input); prop.put("input_display", display); prop.putASIS("input_promoteSearchPageGreeting", promoteSearchPageGreeting); prop.put("input_former", ""); prop.put("former", ""); prop.put("input_count", 10); prop.put("input_offset", 0); prop.put("input_resource", "global"); prop.put("input_time", 6); prop.put("input_urlmaskfilter", ".*"); prop.put("input_prefermaskfilter", ""); prop.put("input_indexof", "off"); prop.put("input_constraint", plasmaSearchQuery.catchall_constraint.exportB64()); prop.put("input_cat", "href"); prop.put("input_depth", "0"); prop.put("input_contentdom", "text"); prop.put("input_contentdomCheckText", 1); prop.put("input_contentdomCheckAudio", 0); prop.put("input_contentdomCheckVideo", 0); prop.put("input_contentdomCheckImage", 0); prop.put("input_contentdomCheckApp", 0); prop.put("excluded", 0); prop.put("results", ""); prop.put("resultTable", 0); prop.put("num-results", (searchAllowed) ? 0 : 4); return prop; } // collect search attributes int maxDistance = Integer.MAX_VALUE; if ((querystring.length() > 2) && (querystring.charAt(0) == '"') && (querystring.charAt(querystring.length() - 1) == '"')) { querystring = querystring.substring(1, querystring.length() - 1).trim(); maxDistance = 1; } if (sb.facilityDB != null) try { sb.facilityDB.update("zeitgeist", querystring, post); } catch (Exception e) {} int itemsPerPage = post.getInt("count", 10); int offset = post.getInt("offset", 0); boolean global = (post == null) ? true : post.get("resource", "global").equals("global"); final boolean indexof = post.get("indexof","").equals("on"); final long searchtime = 1000 * post.getLong("time", 6); String urlmask = ""; if (post.containsKey("urlmask") && post.get("urlmask").equals("no")) { urlmask = ".*"; } else { urlmask = (post.containsKey("urlmaskfilter")) ? (String) post.get("urlmaskfilter") : ".*"; } String prefermask = post.get("prefermaskfilter", ""); if ((prefermask.length() > 0) && (prefermask.indexOf(".*") < 0)) prefermask = ".*" + prefermask + ".*"; kelondroBitfield constraint = post.containsKey("constraint") ? new kelondroBitfield(4, post.get("constraint", "______")) : plasmaSearchQuery.catchall_constraint; if (indexof) { constraint = new kelondroBitfield(); constraint.set(plasmaCondenser.flag_cat_indexof, true); } // SEARCH final boolean indexDistributeGranted = sb.getConfig(plasmaSwitchboard.INDEX_DIST_ALLOW, "true").equals("true"); final boolean indexReceiveGranted = sb.getConfig("allowReceiveIndex", "true").equals("true"); final boolean offline = yacyCore.seedDB.mySeed().isVirgin(); final boolean clustersearch = sb.isRobinsonMode() && (sb.getConfig("cluster.mode", "").equals("privatecluster") || sb.getConfig("cluster.mode", "").equals("publiccluster")); if (offline || !indexDistributeGranted || !indexReceiveGranted) { global = false; } if (clustersearch) global = true; // switches search on, but search target is limited to cluster nodes // find search domain int contentdomCode = plasmaSearchQuery.contentdomParser(post.get("contentdom", "text")); // patch until better search profiles are available if ((contentdomCode != plasmaSearchQuery.CONTENTDOM_TEXT) && (itemsPerPage <= 30)) itemsPerPage = 30; serverObjects prop = new serverObjects(); if (post.get("cat", "href").equals("href")) { final TreeSet[] query = plasmaSearchQuery.cleanQuery(querystring); // converts also umlaute // filter out stopwords final TreeSet filtered = kelondroMSetTools.joinConstructive(query[0], plasmaSwitchboard.stopwords); if (filtered.size() > 0) { kelondroMSetTools.excludeDestructive(query[0], plasmaSwitchboard.stopwords); } // if a minus-button was hit, remove a special reference first if (post.containsKey("deleteref")) { if (!sb.verifyAuthentication(header, true)) { prop.put("AUTHENTICATE", "admin log-in"); // force log-in return prop; } // delete the index entry locally final String delHash = post.get("deleteref", ""); // urlhash sb.wordIndex.removeWordReferences(query[0], delHash); // make new news message with negative voting HashMap map = new HashMap(); map.put("urlhash", delHash); map.put("vote", "negative"); map.put("refid", ""); yacyCore.newsPool.publishMyNews(yacyNewsRecord.newRecord(yacyNewsPool.CATEGORY_SURFTIPP_VOTE_ADD, map)); } // if a plus-button was hit, create new voting message if (post.containsKey("recommendref")) { if (!sb.verifyAuthentication(header, true)) { prop.put("AUTHENTICATE", "admin log-in"); // force log-in return prop; } final String recommendHash = post.get("recommendref", ""); // urlhash indexURLEntry urlentry = sb.wordIndex.loadedURL.load(recommendHash, null); if (urlentry != null) { indexURLEntry.Components comp = urlentry.comp(); plasmaParserDocument document; document = plasmaSnippetCache.retrieveDocument(comp.url(), true, 5000, true); if (document != null) { // create a news message HashMap map = new HashMap(); map.put("url", comp.url().toNormalform(false, true).replace(',', '|')); map.put("title", comp.title().replace(',', ' ')); map.put("description", ((document == null) ? comp.title() : document.getTitle()).replace(',', ' ')); map.put("author", ((document == null) ? "" : document.getAuthor())); map.put("tags", ((document == null) ? "" : document.getKeywords(' '))); yacyCore.newsPool.publishMyNews(yacyNewsRecord.newRecord(yacyNewsPool.CATEGORY_SURFTIPP_ADD, map)); document.close(); } } } // prepare search properties final boolean yacyonline = ((yacyCore.seedDB != null) && (yacyCore.seedDB.mySeed() != null) && (yacyCore.seedDB.mySeed().getPublicAddress() != null)); final boolean globalsearch = (global) && (yacyonline); // do the search TreeSet queryHashes = plasmaCondenser.words2hashes(query[0]); plasmaSearchQuery theQuery = new plasmaSearchQuery( querystring, queryHashes, plasmaCondenser.words2hashes(query[1]), maxDistance, prefermask, contentdomCode, true, itemsPerPage, offset, searchtime, urlmask, (clustersearch && globalsearch) ? plasmaSearchQuery.SEARCHDOM_CLUSTERALL : ((globalsearch) ? plasmaSearchQuery.SEARCHDOM_GLOBALDHT : plasmaSearchQuery.SEARCHDOM_LOCAL), "", 20, constraint); plasmaSearchRankingProfile ranking = (sb.getConfig("rankingProfile", "").length() == 0) ? new plasmaSearchRankingProfile(contentdomCode) : new plasmaSearchRankingProfile("", crypt.simpleDecode(sb.getConfig("rankingProfile", ""), null)); plasmaSearchProcessing localTiming = new plasmaSearchProcessing(4 * theQuery.maximumTime / 10, theQuery.displayResults()); String client = (String) header.get("CLIENTIP"); // the search client who initiated the search // tell all threads to do nothing for a specific time sb.intermissionAllThreads(2 * theQuery.maximumTime); // filter out words that appear in bluelist theQuery.filterOut(plasmaSwitchboard.blueList); // log serverLog.logInfo("LOCAL_SEARCH", "INIT WORD SEARCH: " + theQuery.queryString + ":" + theQuery.queryHashes + " - " + theQuery.neededResults() + " links to be computed, " + theQuery.displayResults() + " lines to be displayed, " + (theQuery.maximumTime / 1000) + " seconds"); long timestamp = System.currentTimeMillis(); // create a new search event if (plasmaSearchEvent.getEvent(theQuery.id()) == null) { theQuery.setOffset(0); // in case that this is a new search, always start without a offset offset = 0; } plasmaSearchEvent theSearch = plasmaSearchEvent.getEvent(theQuery, ranking, localTiming, sb.wordIndex, (sb.isRobinsonMode()) ? sb.clusterhashes : null, false, null); // generate result object serverLog.logFine("LOCAL_SEARCH", "SEARCH TIME AFTER ORDERING OF SEARCH RESULTS: " + ((System.currentTimeMillis() - timestamp) / 1000) + " seconds"); serverLog.logFine("LOCAL_SEARCH", "SEARCH TIME AFTER RESULT PREPARATION: " + ((System.currentTimeMillis() - timestamp) / 1000) + " seconds"); // calc some more cross-reference long remainingTime = theQuery.maximumTime - (System.currentTimeMillis() - timestamp); if (remainingTime < 0) remainingTime = 1000; serverLog.logFine("LOCAL_SEARCH", "SEARCH TIME AFTER XREF PREPARATION: " + ((System.currentTimeMillis() - timestamp) / 1000) + " seconds"); // log serverLog.logInfo("LOCAL_SEARCH", "EXIT WORD SEARCH: " + theQuery.queryString + " - " + (theSearch.getLocalCount() + theSearch.getGlobalCount()) + " links found, " + ((System.currentTimeMillis() - timestamp) / 1000) + " seconds"); // prepare search statistics Long trackerHandle = new Long(System.currentTimeMillis()); HashMap searchProfile = theQuery.resultProfile(theSearch.getLocalCount() + theSearch.getGlobalCount(), System.currentTimeMillis() - timestamp, theSearch.getURLRetrievalTime(), theSearch.getSnippetComputationTime()); searchProfile.put("querystring", theQuery.queryString); searchProfile.put("time", trackerHandle); searchProfile.put("host", client); searchProfile.put("offset", new Integer(0)); sb.localSearches.add(searchProfile); TreeSet handles = (TreeSet) sb.localSearchTracker.get(client); if (handles == null) handles = new TreeSet(); handles.add(trackerHandle); sb.localSearchTracker.put(client, handles); prop = new serverObjects(); prop.put("num-results_totalcount", theSearch.getLocalCount() + theSearch.getGlobalCount()); prop.put("num-results_globalresults", 1); prop.put("num-results_globalresults_globalcount", theSearch.getGlobalCount()); prop.put("num-results_offset", offset); prop.put("num-results_linkcount", 0); prop.put("num-results_itemsPerPage", itemsPerPage); // compose page navigation StringBuffer resnav = new StringBuffer(); int thispage = offset / theQuery.displayResults(); if (thispage == 0) resnav.append("< "); else { resnav.append(navurla(thispage - 1, display, theQuery)); resnav.append("< "); } int numberofpages = Math.min(10, Math.min(thispage + 2, (theSearch.getGlobalCount() + theSearch.getLocalCount()) / theQuery.displayResults())); for (int i = 0; i < numberofpages; i++) { if (i == thispage) { resnav.append(""); resnav.append(i + 1); resnav.append(" "); } else { resnav.append(navurla(i, display, theQuery)); resnav.append(i + 1); resnav.append(" "); } } if (thispage >= numberofpages) resnav.append(">"); else { resnav.append(navurla(thispage + 1, display, theQuery)); resnav.append(">"); } prop.putASIS("num-results_resnav", resnav.toString()); // generate the search result lines; they will be produced by another servlet for (int i = 0; i < theQuery.displayResults(); i++) { prop.put("results_" + i + "_item", offset + i); prop.put("results_" + i + "_eventID", theQuery.id()); } prop.put("results", theQuery.displayResults()); prop.put("resultTable", (contentdomCode <= 1) ? 0 : 1); prop.put("eventID", theQuery.id()); // for bottomline // process result of search if (filtered.size() > 0) { prop.put("excluded", 1); prop.put("excluded_stopwords", filtered.toString()); } else { prop.put("excluded", 0); } if (prop == null || prop.size() == 0) { if (post.get("search", "").length() < 3) { prop.put("num-results", 2); // no results - at least 3 chars } else { prop.put("num-results", 1); // no results } } else { prop.put("num-results", 3); } prop.put("input_cat", "href"); prop.put("input_depth", "0"); // adding some additional properties needed for the rss feed String hostName = (String) header.get("Host", "localhost"); if (hostName.indexOf(":") == -1) hostName += ":" + serverCore.getPortNr(env.getConfig("port", "8080")); prop.putASIS("searchBaseURL", "http://" + hostName + "/yacysearch.html"); prop.putASIS("rssYacyImageURL", "http://" + hostName + "/env/grafics/yacy.gif"); } prop.put("searchagain", (global) ? 1 : 0); prop.put("input", input); prop.put("display", display); prop.put("input_input", input); prop.put("input_display", display); prop.putASIS("input_promoteSearchPageGreeting", promoteSearchPageGreeting); prop.put("input_former", querystring); prop.put("former", post.get("search", "")); prop.put("input_count", itemsPerPage); prop.put("input_offset", offset); prop.put("input_resource", (global) ? "global" : "local"); prop.put("input_time", searchtime / 1000); prop.put("input_urlmaskfilter", urlmask); prop.put("input_prefermaskfilter", prefermask); prop.put("input_indexof", (indexof) ? "on" : "off"); prop.put("input_constraint", constraint.exportB64()); prop.put("input_contentdom", post.get("contentdom", "text")); prop.put("input_contentdomCheckText", (contentdomCode == plasmaSearchQuery.CONTENTDOM_TEXT) ? 1 : 0); prop.put("input_contentdomCheckAudio", (contentdomCode == plasmaSearchQuery.CONTENTDOM_AUDIO) ? 1 : 0); prop.put("input_contentdomCheckVideo", (contentdomCode == plasmaSearchQuery.CONTENTDOM_VIDEO) ? 1 : 0); prop.put("input_contentdomCheckImage", (contentdomCode == plasmaSearchQuery.CONTENTDOM_IMAGE) ? 1 : 0); prop.put("input_contentdomCheckApp", (contentdomCode == plasmaSearchQuery.CONTENTDOM_APP) ? 1 : 0); // for RSS: don't HTML encode some elements String q = htmlTools.encodeUnicode2xml(post.get("search", "")); prop.putASIS("rss_query", q); prop.putASIS("rss_queryenc", yacyURL.escape(q.replace(' ', '+'))); // return rewrite properties return prop; } private static String navurla(int page, int display, plasmaSearchQuery theQuery) { return ""; } }