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178 lines
8.3 KiB
178 lines
8.3 KiB
// webstructure.java
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// ------------
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// (C) 2009 by Michael Peter Christen; mc@yacy.net
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// first published 01.05.2008 on http://yacy.net
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//
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// $LastChangedDate: 2009-03-16 19:08:43 +0100 (Mo, 16 Mrz 2009) $
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// $LastChangedRevision: 5723 $
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// $LastChangedBy: borg-0300 $
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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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import java.io.IOException;
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import java.net.MalformedURLException;
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import java.util.Date;
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import java.util.Iterator;
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import java.util.Map;
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import net.yacy.cora.date.GenericFormatter;
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import net.yacy.cora.document.ASCII;
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import net.yacy.cora.protocol.RequestHeader;
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import net.yacy.kelondro.data.citation.CitationReference;
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import net.yacy.kelondro.data.meta.DigestURI;
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import net.yacy.kelondro.order.Base64Order;
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import net.yacy.kelondro.rwi.IndexCell;
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import net.yacy.kelondro.rwi.ReferenceContainer;
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import net.yacy.peers.graphics.WebStructureGraph;
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import net.yacy.search.Switchboard;
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import net.yacy.search.index.Segments;
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import de.anomic.server.serverObjects;
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import de.anomic.server.serverSwitch;
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public class webstructure {
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public static serverObjects respond(final RequestHeader header, final serverObjects post, final serverSwitch env) {
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final serverObjects prop = new serverObjects();
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final Switchboard sb = (Switchboard) env;
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String about = post == null ? null : post.get("about", null); // may be a URL, a URL hash or a domain hash
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prop.put("out", 0);
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prop.put("in", 0);
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prop.put("citations", 0);
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boolean authenticated = sb.adminAuthenticated(header) >= 2;
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if (about != null) {
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DigestURI url = null;
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byte[] urlhash = null;
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String hosthash = null;
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if (about.length() == 6 && Base64Order.enhancedCoder.wellformed(ASCII.getBytes(about))) {
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hosthash = about;
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} else if (about.length() == 12 && Base64Order.enhancedCoder.wellformed(ASCII.getBytes(about))) {
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urlhash = ASCII.getBytes(about);
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hosthash = about.substring(6);
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url = authenticated ? sb.getURL(Segments.Process.PUBLIC, urlhash) : null;
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} else if (authenticated && about.length() > 0) {
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// consider "about" as url or hostname
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try {
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url = new DigestURI(about.indexOf("://") >= 0 ? about : "http://" + about); // accept also domains
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urlhash = url.hash();
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hosthash = ASCII.String(urlhash, 6, 6);
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} catch (MalformedURLException e) {
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}
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}
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if (hosthash != null) {
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prop.put("out", 1);
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prop.put("in", 1);
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WebStructureGraph.StructureEntry sentry = sb.webStructure.outgoingReferences(hosthash);
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if (sentry != null) {
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reference(prop, "out", 0, sentry, sb.webStructure);
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prop.put("out_domains", 1);
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} else {
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prop.put("out_domains", 0);
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}
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sentry = sb.webStructure.incomingReferences(hosthash);
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if (sentry != null) {
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reference(prop, "in", 0, sentry, sb.webStructure);
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prop.put("in_domains", 1);
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} else {
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prop.put("in_domains", 0);
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}
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}
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if (urlhash != null) {
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prop.put("citations", 1);
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IndexCell<CitationReference> citationReferences = sb.indexSegments.segment(Segments.Process.PUBLIC).urlCitation();
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ReferenceContainer<CitationReference> citations = null;
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// citationReferences.count(urlhash) would give to the number of references good for ranking
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try {
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citations = citationReferences.get(urlhash, null);
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} catch (IOException e) {
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}
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if (citations != null) {
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prop.put("citations_anchors", 1);
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prop.put("citations_anchors_0_hash", urlhash);
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prop.put("citations_anchors_0_citationscount", citations.size());
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prop.put("citations_anchors_0_date", GenericFormatter.SHORT_DAY_FORMATTER.format(new Date(citations.lastWrote())));
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prop.put("citations_anchors_0_urle", url == null ? 0 : 1);
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if (url != null) prop.put("citations_anchors_0_urle_url", url.toNormalform(true, false));
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Iterator<CitationReference> i = citations.entries();
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int d = 0;
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CitationReference cr;
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byte[] refhash;
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DigestURI refurl;
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while (i.hasNext()) {
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cr = i.next();
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refhash = cr.urlhash();
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refurl = authenticated ? sb.getURL(Segments.Process.PUBLIC, refhash) : null;
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prop.put("citations_anchors_0_citations_" + d + "_refurle", refurl == null ? 0 : 1);
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if (refurl != null) prop.put("citations_anchors_0_citations_" + d + "_refurle_refurl", refurl.toNormalform(true, false));
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prop.put("citations_anchors_0_citations_" + d + "_refurle_refhash", refhash);
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prop.put("citations_anchors_0_citations_" + d + "_refurle_refdate", GenericFormatter.SHORT_DAY_FORMATTER.format(new Date(cr.lastModified())));
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d++;
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}
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prop.put("citations_anchors_0_citations", d);
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} else {
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prop.put("citations_anchors", 0);
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}
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}
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} else if (authenticated) {
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// show a complete list of link structure informations in case that the user is authenticated
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final boolean latest = ((post == null) ? false : post.containsKey("latest"));
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final Iterator<WebStructureGraph.StructureEntry> i = sb.webStructure.structureEntryIterator(latest);
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int c = 0;
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WebStructureGraph.StructureEntry sentry;
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while (i.hasNext()) {
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sentry = i.next();
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reference(prop, "out", c, sentry, sb.webStructure);
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c++;
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}
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prop.put("out_domains", c);
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prop.put("out", 1);
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if (latest) sb.webStructure.joinOldNew();
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} else {
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// not-authenticated users show nothing
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prop.put("out_domains", 0);
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prop.put("out", 1);
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}
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prop.put("out_maxref", WebStructureGraph.maxref);
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prop.put("maxhosts", WebStructureGraph.maxhosts);
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// return rewrite properties
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return prop;
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}
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public static void reference(serverObjects prop, String prefix, int c, WebStructureGraph.StructureEntry sentry, WebStructureGraph ws) {
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prop.put(prefix + "_domains_" + c + "_hash", sentry.hosthash);
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prop.put(prefix + "_domains_" + c + "_domain", sentry.hostname);
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prop.put(prefix + "_domains_" + c + "_date", sentry.date);
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Iterator<Map.Entry<String, Integer>> k = sentry.references.entrySet().iterator();
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Map.Entry<String, Integer> refentry;
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String refdom, refhash;
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Integer refcount;
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int d = 0;
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refloop: while (k.hasNext()) {
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refentry = k.next();
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refhash = refentry.getKey();
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refdom = ws.hostHash2hostName(refhash);
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if (refdom == null) continue refloop;
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prop.put(prefix + "_domains_" + c + "_citations_" + d + "_refhash", refhash);
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prop.put(prefix + "_domains_" + c + "_citations_" + d + "_refdom", refdom);
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refcount = refentry.getValue();
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prop.put(prefix + "_domains_" + c + "_citations_" + d + "_refcount", refcount.intValue());
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d++;
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}
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prop.put(prefix + "_domains_" + c + "_citations", d);
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}
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}
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