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yacy_search_server/htroot/yacysearch.java

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// 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.io.UnsupportedEncodingException;
import java.net.MalformedURLException;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Set;
import java.util.regex.PatternSyntaxException;
import java.util.TreeSet;
import de.anomic.htmlFilter.htmlFilterImageEntry;
import de.anomic.http.httpHeader;
import de.anomic.index.indexURLEntry;
import de.anomic.kelondro.kelondroBitfield;
import de.anomic.kelondro.kelondroMSetTools;
import de.anomic.kelondro.kelondroNaturalOrder;
import de.anomic.net.URL;
import de.anomic.plasma.plasmaCondenser;
import de.anomic.plasma.plasmaParserDocument;
import de.anomic.plasma.plasmaSearchImages;
import de.anomic.plasma.plasmaSearchPreOrder;
import de.anomic.plasma.plasmaSearchQuery;
import de.anomic.plasma.plasmaSearchRankingProfile;
import de.anomic.plasma.plasmaSearchTimingProfile;
import de.anomic.plasma.plasmaSwitchboard;
import de.anomic.plasma.plasmaURL;
import de.anomic.plasma.plasmaSearchResults;
import de.anomic.server.serverCore;
import de.anomic.server.serverDate;
import de.anomic.server.serverObjects;
import de.anomic.server.serverSwitch;
import de.anomic.tools.crypt;
import de.anomic.tools.nxTools;
import de.anomic.yacy.yacyCore;
import de.anomic.yacy.yacyNewsPool;
import de.anomic.yacy.yacyNewsRecord;
import de.anomic.yacy.yacySeed;
public class yacysearch {
public static final int MAX_TOPWORDS = 24;
public static serverObjects respond(httpHeader header, serverObjects post, serverSwitch env) {
final plasmaSwitchboard sb = (plasmaSwitchboard) env;
boolean authenticated = sb.adminAuthenticated(header) >= 2;
int display = ((post == null) || (!authenticated)) ? 0 : post.getInt("display", 0);
int input = (post == null) ? 0 : post.getInt("input", 1);
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)) {
// save referrer
// System.out.println("HEADER=" + header.toString());
if (referer != null) {
URL url;
try { url = new URL(referer); } catch (MalformedURLException e) { url = null; }
if ((url != null) && (serverCore.isNotLocal(url))) {
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("display", display);
prop.putASIS("input_promoteSearchPageGreeting", promoteSearchPageGreeting);
prop.put("input_former", "");
prop.put("input_count", 10);
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_type", 0);
prop.put("input_type_excluded", 0);
prop.put("input_type_num-results", 0);
prop.put("input_type_combine", 0);
prop.put("input_type_resultbottomline", 0);
prop.put("input_type_results", "");
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("input", 0);
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 count = Integer.parseInt(post.get("count", "10"));
boolean global = (post == null) ? true : post.get("resource", "global").equals("global");
final boolean indexof = post.get("indexof","").equals("on");
final long searchtime = 1000 * Long.parseLong(post.get("time", "10"));
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("allowDistributeIndex", "true").equals("true");
final boolean indexReceiveGranted = sb.getConfig("allowReceiveIndex", "true").equals("true");
final boolean offline = yacyCore.seedDB.mySeed.isVirgin();
if (offline || !indexDistributeGranted || !indexReceiveGranted) { global = false; }
// find search domain
int contentdomCode = plasmaSearchQuery.CONTENTDOM_TEXT;
String contentdomString = post.get("contentdom", "text");
if (contentdomString.equals("text")) contentdomCode = plasmaSearchQuery.CONTENTDOM_TEXT;
if (contentdomString.equals("audio")) contentdomCode = plasmaSearchQuery.CONTENTDOM_AUDIO;
if (contentdomString.equals("video")) contentdomCode = plasmaSearchQuery.CONTENTDOM_VIDEO;
if (contentdomString.equals("image")) contentdomCode = plasmaSearchQuery.CONTENTDOM_IMAGE;
if (contentdomString.equals("app")) contentdomCode = plasmaSearchQuery.CONTENTDOM_APP;
// patch until better search profiles are available
if ((contentdomCode != plasmaSearchQuery.CONTENTDOM_TEXT) && (count <= 10)) count = 30;
serverObjects prop = new serverObjects();
if (post.get("cat", "href").equals("href")) {
final TreeSet[] query = plasmaSearchQuery.cleanQuery(querystring);
// 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(new yacyNewsRecord(yacyNewsPool.CATEGORY_SURFTIPP_VOTE_ADD, map));
}
// if aplus-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 = sb.snippetCache.retrieveDocument(comp.url(), true, 5000, true);
if (document != null) {
// create a news message
HashMap map = new HashMap();
map.put("url", comp.url().toNormalform().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(new yacyNewsRecord(yacyNewsPool.CATEGORY_SURFTIPP_ADD, map));
document.close();
}
}
}
// prepare search properties
final boolean yacyonline = ((yacyCore.seedDB != null) && (yacyCore.seedDB.mySeed != null) && (yacyCore.seedDB.mySeed.getAddress() != null));
final boolean samesearch = env.getConfig("last-search", "").equals(querystring + contentdomString);
final boolean globalsearch = (global) && (yacyonline) && (!samesearch);
// do the search
Set querywords = query[0];
plasmaSearchQuery thisSearch = new plasmaSearchQuery(
querystring,
plasmaCondenser.words2hashes(query[0]),
plasmaCondenser.words2hashes(query[1]),
maxDistance,
prefermask,
contentdomCode,
count,
searchtime,
urlmask,
(globalsearch) ? plasmaSearchQuery.SEARCHDOM_GLOBALDHT : plasmaSearchQuery.SEARCHDOM_LOCAL,
"",
20,
constraint);
plasmaSearchRankingProfile ranking = (sb.getConfig("rankingProfile", "").length() == 0) ? new plasmaSearchRankingProfile(contentdomString) : new plasmaSearchRankingProfile("", crypt.simpleDecode(sb.getConfig("rankingProfile", ""), null));
plasmaSearchTimingProfile localTiming = new plasmaSearchTimingProfile(4 * thisSearch.maximumTime / 10, thisSearch.wantedResults);
plasmaSearchTimingProfile remoteTiming = new plasmaSearchTimingProfile(6 * thisSearch.maximumTime / 10, thisSearch.wantedResults);
plasmaSearchResults results = new plasmaSearchResults();
String wrongregex = null;
try{
results = sb.searchFromLocal(thisSearch, ranking, localTiming, remoteTiming, true, (String) header.get("CLIENTIP"));
}
catch(PatternSyntaxException e){
wrongregex = e.getPattern();
}
//prop=sb.searchFromLocal(thisSearch, ranking, localTiming, remoteTiming, true, (String) header.get("CLIENTIP"));
prop=new serverObjects();
//prop.put("references", 0);
URL wordURL=null;
prop.put("num-results_totalcount", results.getTotalcount());
prop.put("num-results_filteredcount", results.getFilteredcount());
prop.put("num-results_orderedcount", results.getOrderedcount());
prop.put("num-results_linkcount", results.getLinkcount());
prop.put("type_results", 0);
if(results.numResults()!=0){
//we've got results
prop.put("num-results_totalcount", results.getTotalcount());
prop.put("num-results_filteredcount", results.getFilteredcount());
prop.put("num-results_orderedcount", Integer.toString(results.getOrderedcount())); //why toString?
prop.put("num-results_globalresults", results.getGlobalresults());
for(int i=0;i<results.numResults();i++){
plasmaSearchResults.searchResult result=results.getResult(i);
try {
prop.put("type_results_" + i + "_authorized_recommend", (yacyCore.newsPool.getSpecific(yacyNewsPool.OUTGOING_DB, yacyNewsPool.CATEGORY_SURFTIPP_ADD, "url", result.getUrl()) == null) ? 1 : 0);
} catch (IOException e) {}
//prop.put("type_results_" + i + "_authorized_recommend_deletelink", "/yacysearch.html?search=" + results.getFormerSearch() + "&amp;Enter=Search&amp;count=" + results.getQuery().wantedResults + "&amp;order=" + crypt.simpleEncode(results.getRanking().toExternalString()) + "&amp;resource=local&amp;time=3&amp;deleteref=" + result.getUrlhash() + "&amp;urlmaskfilter=.*");
//prop.put("type_results_" + i + "_authorized_recommend_recommendlink", "/yacysearch.html?search=" + results.getFormerSearch() + "&amp;Enter=Search&amp;count=" + results.getQuery().wantedResults + "&amp;order=" + crypt.simpleEncode(results.getRanking().toExternalString()) + "&amp;resource=local&amp;time=3&amp;recommendref=" + result.getUrlhash() + "&amp;urlmaskfilter=.*");
prop.put("type_results_" + i + "_authorized_recommend_deletelink", "/yacysearch.html?search=" + results.getFormerSearch() + "&Enter=Search&count=" + results.getQuery().wantedResults + "&order=" + crypt.simpleEncode(results.getRanking().toExternalString()) + "&resource=local&time=3&deleteref=" + result.getUrlhash() + "&urlmaskfilter=.*");
prop.put("type_results_" + i + "_authorized_recommend_recommendlink", "/yacysearch.html?search=" + results.getFormerSearch() + "&Enter=Search&count=" + results.getQuery().wantedResults + "&order=" + crypt.simpleEncode(results.getRanking().toExternalString()) + "&resource=local&time=3&recommendref=" + result.getUrlhash() + "&urlmaskfilter=.*");
prop.put("type_results_" + i + "_authorized_urlhash", result.getUrlhash());
prop.put("type_results_" + i + "_description", result.getUrlentry().comp().title());
prop.put("type_results_" + i + "_url", result.getUrl());
prop.put("type_results_" + i + "_urlhash", result.getUrlhash());
prop.put("type_results_" + i + "_urlhexhash", yacySeed.b64Hash2hexHash(result.getUrlhash()));
prop.put("type_results_" + i + "_urlname", nxTools.shortenURLString(result.getUrlname(), 120));
prop.put("type_results_" + i + "_date", plasmaSwitchboard.dateString(result.getUrlentry().moddate()));
prop.put("type_results_" + i + "_ybr", plasmaSearchPreOrder.ybr(result.getUrlentry().hash()));
prop.put("type_results_" + i + "_size", Long.toString(result.getUrlentry().size()));
try {
prop.put("type_results_" + i + "_words", URLEncoder.encode(querywords.toString(),"UTF-8"));
} catch (UnsupportedEncodingException e) {}
prop.put("type_results_" + i + "_former", results.getFormerSearch());
prop.put("type_results_" + i + "_rankingprops", result.getUrlentry().word().toPropertyForm() + ", domLengthEstimated=" + plasmaURL.domLengthEstimation(result.getUrlhash()) +
((plasmaURL.probablyRootURL(result.getUrlhash())) ? ", probablyRootURL" : "") +
(((wordURL = plasmaURL.probablyWordURL(result.getUrlhash(), query[0])) != null) ? ", probablyWordURL=" + wordURL.toNormalform() : ""));
// adding snippet if available
if (result.hasSnippet()) {
prop.put("type_results_" + i + "_snippet", 1);
prop.putASIS("type_results_" + i + "_snippet_text", result.getSnippet().getLineMarked(results.getQuery().queryHashes));//FIXME: the ASIS should not be needed, if there is no html in .java
} else {
prop.put("type_results_" + i + "_snippet", 0);
prop.put("type_results_" + i + "_snippet_text", "");
}
prop.put("type_results", results.numResults());
prop.put("references", results.getReferences());
prop.put("num-results_linkcount", Integer.toString(results.numResults()));
}
}
// remember the last search expression
env.setConfig("last-search", querystring + contentdomString);
// process result of search
prop.put("type_resultbottomline", 0);
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 {
final int totalcount = prop.getInt("num-results_totalcount", 0);
if (totalcount >= 10) {
final Object[] references = (Object[]) prop.get( "references", new String[0]);
prop.put("num-results", 5);
int hintcount = references.length;
if (hintcount > 0) {
prop.put("type_combine", 1);
// get the topwords
final TreeSet topwords = new TreeSet(kelondroNaturalOrder.naturalOrder);
String tmp = "";
for (int i = 0; i < hintcount; i++) {
tmp = (String) references[i];
if (tmp.matches("[a-z]+")) {
topwords.add(tmp);
// } else {
// topwords.add("(" + tmp + ")");
}
}
// filter out the badwords
final TreeSet filteredtopwords = kelondroMSetTools.joinConstructive(topwords, plasmaSwitchboard.badwords);
if (filteredtopwords.size() > 0) {
kelondroMSetTools.excludeDestructive(topwords, plasmaSwitchboard.badwords);
}
//avoid stopwords being topwords
if (env.getConfig("filterOutStopwordsFromTopwords", "true").equals("true")) {
if ((plasmaSwitchboard.stopwords != null) && (plasmaSwitchboard.stopwords.size() > 0)) {
kelondroMSetTools.excludeDestructive(topwords, plasmaSwitchboard.stopwords);
}
}
String word;
hintcount = 0;
final Iterator iter = topwords.iterator();
while (iter.hasNext()) {
word = (String) iter.next();
if (word != null) {
prop.put("type_combine_words_" + hintcount + "_word", word);
prop.put("type_combine_words_" + hintcount + "_newsearch", post.get("search", "").replace(' ', '+') + "+" + word);
prop.put("type_combine_words_" + hintcount + "_count", count);
prop.put("type_combine_words_" + hintcount + "_resource", ((global) ? "global" : "local"));
prop.put("type_combine_words_" + hintcount + "_time", (searchtime / 1000));
}
prop.put("type_combine_words", hintcount);
if (hintcount++ > MAX_TOPWORDS) {
break;
}
}
}
} else {
if (wrongregex != null) {
prop.put("num-results_wrong_regex", wrongregex);
prop.put("num-results", 4);
}
else if (totalcount == 0) {
prop.put("num-results", 3); // long
}
else {
prop.put("num-results", 5);
}
}
}
if (wrongregex != null) {
prop.put("type_resultbottomline", 0);
}
else if (yacyonline) {
if (global) {
prop.put("type_resultbottomline", 1);
prop.put("type_resultbottomline_globalresults", prop.get("num-results_globalresults", "0"));
} else {
prop.put("type_resultbottomline", 0);
}
} else {
if (global) {
prop.put("type_resultbottomline", 3);
} else {
prop.put("type_resultbottomline", 0);
}
}
prop.put("type", (thisSearch.contentdom == plasmaSearchQuery.CONTENTDOM_TEXT) ? 0 : ((thisSearch.contentdom == plasmaSearchQuery.CONTENTDOM_IMAGE) ? 2 : 1));
if (prop.getInt("type", 0) == 1) prop.put("type_mediatype", contentdomString);
prop.put("cat", "href");
prop.put("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.put("rssYacyImageURL", "http://" + hostName + "/env/grafics/yacy.gif");
}
if (post.get("cat", "href").equals("image")) {
int depth = post.getInt("depth", 0);
int columns = post.getInt("columns", 6);
URL url = null;
try {url = new URL(post.get("url", ""));} catch (MalformedURLException e) {}
plasmaSearchImages si = new plasmaSearchImages(sb.snippetCache, 6000, url, depth);
Iterator i = si.entries();
htmlFilterImageEntry ie;
int line = 0;
while (i.hasNext()) {
int col = 0;
for (col = 0; col < columns; col++) {
if (!i.hasNext()) break;
ie = (htmlFilterImageEntry) i.next();
String urls = ie.url().toString();
String name = "";
int p = urls.lastIndexOf('/');
if (p > 0) name = urls.substring(p + 1);
prop.put("type_results_" + line + "_line_" + col + "_url", urls);
prop.put("type_results_" + line + "_line_" + col + "_name", name);
}
prop.put("type_results_" + line + "_line", col);
line++;
}
prop.put("type_results", line);
prop.put("type", 3); // set type of result: image list
prop.put("cat", "href");
prop.put("depth", depth);
}
// if user is not authenticated, he may not vote for URLs
int linkcount = Integer.parseInt(prop.get("num-results_linkcount", "0"));
for (int i=0; i<linkcount; i++)
prop.put("type_results_" + i + "_authorized", (authenticated) ? 1 : 0);
prop.put("display", display);
prop.putASIS("input_promoteSearchPageGreeting", promoteSearchPageGreeting);
prop.put("input_former", post.get("search", ""));
prop.put("input_count", count);
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", contentdomString);
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);
prop.put("input", input);
// return rewrite properties
return prop;
}
}
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