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936 lines
38 KiB
936 lines
38 KiB
// yacySeed.java
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// -------------------------------------
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// (C) by Michael Peter Christen; mc@yacy.net
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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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//
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// YACY stands for Yet Another CYberspace
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//
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// the yacySeed Object is the object that bundles and carries all information about
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// a single peer in the yacy space.
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// The yacySeed object is carried along peers using a string representation, that can
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// be compressed and/or scrambled, depending on the purpose of the process.
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//
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// the yacy status
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// any value that is defined here will be overwritten each time the proxy is started
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// to prevent that the system gets confused, it should be set to "" which means
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// undefined. Other status' that can be reached at run-time are
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// junior - a peer that has no public socket, thus cannot be reached on demand
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// senior - a peer that has a public socked and serves search queries
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// principal - a peer like a senior socket and serves as gateway for network definition
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package net.yacy.peers;
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import java.io.File;
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import java.io.FileReader;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.net.InetAddress;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.text.ParseException;
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import java.util.Comparator;
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import java.util.Date;
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import java.util.Iterator;
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import java.util.Random;
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import java.util.Set;
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import java.util.TreeMap;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.ConcurrentMap;
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import java.util.regex.Pattern;
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import net.yacy.cora.date.AbstractFormatter;
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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.document.UTF8;
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import net.yacy.cora.protocol.Domains;
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import net.yacy.kelondro.data.word.Word;
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import net.yacy.kelondro.index.HandleSet;
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import net.yacy.kelondro.order.Base64Order;
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import net.yacy.kelondro.order.Digest;
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import net.yacy.kelondro.util.MapTools;
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import net.yacy.kelondro.util.OS;
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import net.yacy.peers.dht.FlatWordPartitionScheme;
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import net.yacy.peers.operation.yacyVersion;
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import net.yacy.search.Switchboard;
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import de.anomic.tools.bitfield;
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import de.anomic.tools.crypt;
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public class Seed implements Cloneable, Comparable<Seed>, Comparator<Seed> {
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public static String ANON_PREFIX = "_anon";
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public static final int maxsize = 16000;
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/**
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* <b>substance</b> "sI" (send index/words)
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*/
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public static final String INDEX_OUT = "sI";
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/**
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* <b>substance</b> "rI" (received index/words)
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*/
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public static final String INDEX_IN = "rI";
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/**
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* <b>substance</b> "sU" (send URLs)
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*/
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public static final String URL_OUT = "sU";
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/**
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* <b>substance</b> "rU" (received URLs)
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*/
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public static final String URL_IN = "rU";
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/**
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* <b>substance</b> "virgin"
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*/
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public static final String PEERTYPE_VIRGIN = "virgin";
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/**
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* <b>substance</b> "junior"
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*/
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public static final String PEERTYPE_JUNIOR = "junior";
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/**
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* <b>substance</b> "senior"
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*/
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public static final String PEERTYPE_SENIOR = "senior";
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/**
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* <b>substance</b> "principal"
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*/
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public static final String PEERTYPE_PRINCIPAL = "principal";
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/**
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* <b>substance</b> "PeerType"
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*/
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public static final String PEERTYPE = "PeerType";
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/** static/dynamic (if the IP changes often for any reason) */
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private static final String IPTYPE = "IPType";
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private static final String FLAGS = "Flags";
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private static final String FLAGSZERO = "____";
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/** the applications version */
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public static final String VERSION = "Version";
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public static final String YOURTYPE = "yourtype";
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public static final String LASTSEEN = "LastSeen";
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private static final String USPEED = "USpeed";
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/** the name of the peer (user-set) */
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public static final String NAME = "Name";
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private static final String HASH = "Hash";
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/** Birthday - first startup */
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private static final String BDATE = "BDate";
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/** UTC-Offset */
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public static final String UTC = "UTC";
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private static final String PEERTAGS = "Tags";
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/** the speed of indexing (pages/minute) of the peer */
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public static final String ISPEED = "ISpeed";
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/** the speed of retrieval (queries/minute) of the peer */
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public static final String RSPEED = "RSpeed";
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/** the number of minutes that the peer is up in minutes/day (moving average MA30) */
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public static final String UPTIME = "Uptime";
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/** the number of links that the peer has stored (LURL's) */
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public static final String LCOUNT = "LCount";
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/** the number of links that the peer has noticed, but not loaded (NURL's) */
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public static final String NCOUNT = "NCount";
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/** the number of links that the peer provides for remote crawls (ZURL's) */
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public static final String RCOUNT = "RCount";
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/** the number of different words the peer has indexed */
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public static final String ICOUNT = "ICount";
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/** the number of seeds that the peer has stored */
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public static final String SCOUNT = "SCount";
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/** the number of clients that the peer connects (connects/hour as double) */
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public static final String CCOUNT = "CCount";
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public static final String IP = "IP";
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public static final String PORT = "Port";
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public static final String SEEDLISTURL = "seedURL";
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/** zero-value */
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private static final String ZERO = "0";
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private static final int FLAG_DIRECT_CONNECT = 0;
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private static final int FLAG_ACCEPT_REMOTE_CRAWL = 1;
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private static final int FLAG_ACCEPT_REMOTE_INDEX = 2;
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public static final String DFLT_NETWORK_UNIT = "freeworld";
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public static final String DFLT_NETWORK_GROUP = "";
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private static final Random random = new Random(System.currentTimeMillis());
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// class variables
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/** the peer-hash */
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public String hash;
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/** a set of identity founding values, eg. IP, name of the peer, YaCy-version, ...*/
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private final ConcurrentMap<String, String> dna;
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private String alternativeIP = null;
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private long birthdate; // keep this value in ram since it is often used and may cause lockings in concurrent situations.
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public Seed(final String theHash, final ConcurrentMap<String, String> theDna) {
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// create a seed with a pre-defined hash map
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assert theHash != null;
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this.hash = theHash;
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this.dna = theDna;
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final String flags = this.dna.get(Seed.FLAGS);
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if ((flags == null) || (flags.length() != 4)) { this.dna.put(Seed.FLAGS, Seed.FLAGSZERO); }
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this.dna.put(Seed.NAME, checkPeerName(get(Seed.NAME, "∅")));
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this.birthdate = -1; // this means 'not yet parsed', parse that later when it is used
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}
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private Seed(final String theHash) {
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this.dna = new ConcurrentHashMap<String, String>();
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// settings that can only be computed by originating peer:
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// at first startup -
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this.hash = theHash; // the hash key of the peer - very important. should be static somehow, even after restart
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this.dna.put(Seed.NAME, defaultPeerName());
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// later during operation -
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this.dna.put(Seed.ISPEED, Seed.ZERO);
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this.dna.put(Seed.RSPEED, Seed.ZERO);
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this.dna.put(Seed.UPTIME, Seed.ZERO);
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this.dna.put(Seed.LCOUNT, Seed.ZERO);
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this.dna.put(Seed.NCOUNT, Seed.ZERO);
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this.dna.put(Seed.RCOUNT, Seed.ZERO);
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this.dna.put(Seed.ICOUNT, Seed.ZERO);
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this.dna.put(Seed.SCOUNT, Seed.ZERO);
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this.dna.put(Seed.CCOUNT, Seed.ZERO);
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this.dna.put(Seed.VERSION, Seed.ZERO);
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// settings that is created during the 'hello' phase - in first contact
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this.dna.put(Seed.IP, ""); // 123.234.345.456
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this.dna.put(Seed.PORT, "∅");
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this.dna.put(Seed.IPTYPE, "∅");
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// settings that can only be computed by visiting peer
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this.dna.put(Seed.USPEED, Seed.ZERO); // the computated uplink speed of the peer
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// settings that are needed to organize the seed round-trip
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this.dna.put(Seed.FLAGS, Seed.FLAGSZERO);
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setFlagDirectConnect(false);
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setFlagAcceptRemoteCrawl(true);
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setFlagAcceptRemoteIndex(true);
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setUnusedFlags();
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// index transfer
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this.dna.put(Seed.INDEX_OUT, Seed.ZERO); // send index
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this.dna.put(Seed.INDEX_IN, Seed.ZERO); // received index
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this.dna.put(Seed.URL_OUT, Seed.ZERO); // send URLs
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this.dna.put(Seed.URL_IN, Seed.ZERO); // received URLs
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// default first filling
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this.dna.put(Seed.BDATE, GenericFormatter.SHORT_SECOND_FORMATTER.format());
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this.dna.put(Seed.LASTSEEN, this.dna.get(Seed.BDATE)); // just as initial setting
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this.dna.put(Seed.UTC, GenericFormatter.UTCDiffString());
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this.dna.put(Seed.PEERTYPE, Seed.PEERTYPE_VIRGIN); // virgin/junior/senior/principal
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this.birthdate = System.currentTimeMillis();
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}
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/**
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* check the peer name: protect against usage as XSS hack
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* @param id
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* @return a checked name without "<" and ">"
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*/
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private final static Pattern tp = Pattern.compile("<|>");
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private static String checkPeerName(String name) {
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name = tp.matcher(name).replaceAll("_");
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return name;
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}
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/**
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* generate a default peer name
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* @return
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*/
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private static String defaultPeerName() {
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return ANON_PREFIX + OS.infoKey() + "-" + (System.currentTimeMillis() % 77777777L) + "-" + Network.speedKey;
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}
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/**
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* Checks for the static fragments of a generated default peer name, such as the string 'dpn'
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* @see #makeDefaultPeerName()
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* @param name the peer name to check for default peer name compliance
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* @return whether the given peer name may be a default generated peer name
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*/
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public static boolean isDefaultPeerName(final String name) {
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return name.startsWith("_anon");
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}
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/**
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* used when doing routing within a cluster; this can assign a ip and a port
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* that is used instead the address stored in the seed DNA
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*/
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public void setAlternativeAddress(final String ipport) {
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if (ipport == null) return;
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final int p = ipport.indexOf(':');
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if (p < 0) this.alternativeIP = ipport; else this.alternativeIP = ipport.substring(0, p);
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}
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/**
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* try to get the IP<br>
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* @return the IP or null
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*/
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public final String getIP() {
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final String ip = get(Seed.IP, "127.0.0.1");
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return (ip == null || ip.length() == 0) ? "127.0.0.1" : ip;
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}
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/**
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* try to get the peertype<br>
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* @return the peertype or null
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*/
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public final String getPeerType() { return get(Seed.PEERTYPE, ""); }
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/**
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* try to get the peertype<br>
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* @return the peertype or "virgin"
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*/
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public final String orVirgin() { return get(Seed.PEERTYPE, Seed.PEERTYPE_VIRGIN); }
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/**
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* try to get the peertype<br>
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* @return the peertype or "junior"
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*/
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public final String orJunior() { return get(Seed.PEERTYPE, Seed.PEERTYPE_JUNIOR); }
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/**
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* try to get the peertype<br>
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* @return the peertype or "senior"
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*/
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public final String orSenior() { return get(Seed.PEERTYPE, Seed.PEERTYPE_SENIOR); }
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/**
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* try to get the peertype<br>
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* @return the peertype or "principal"
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*/
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public final String orPrincipal() { return get(Seed.PEERTYPE, Seed.PEERTYPE_PRINCIPAL); }
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/**
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* Get a value from the peer's DNA (its set of peer defining values, e.g. IP, name, version, ...)
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* @param key the key for the value to fetch
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* @param dflt the default value
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*/
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public final String get(final String key, final String dflt) {
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final Object o = this.dna.get(key);
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if (o == null) { return dflt; }
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return (String) o;
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}
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public final float getFloat(final String key, final float dflt) {
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final Object o = this.dna.get(key);
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if (o == null) { return dflt; }
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if (o instanceof String) try {
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return Float.parseFloat((String) o);
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} catch (final NumberFormatException e) {
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return dflt;
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} else if (o instanceof Float) {
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return ((Float) o).floatValue();
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} else return dflt;
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}
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public final long getLong(final String key, final long dflt) {
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final Object o = this.dna.get(key);
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if (o == null) { return dflt; }
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if (o instanceof String) try {
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return Long.parseLong((String) o);
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} catch (final NumberFormatException e) {
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return dflt;
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} else if (o instanceof Long) {
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return ((Long) o).longValue();
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} else if (o instanceof Integer) {
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return ((Integer) o).intValue();
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} else return dflt;
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}
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public final void setIP(final String ip) { this.dna.put(Seed.IP, ip); }
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public final void setPort(final String port) { this.dna.put(Seed.PORT, port); }
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public final void setType(final String type) { this.dna.put(Seed.PEERTYPE, type); }
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public final void setJunior() { this.dna.put(Seed.PEERTYPE, Seed.PEERTYPE_JUNIOR); }
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public final void setSenior() { this.dna.put(Seed.PEERTYPE, Seed.PEERTYPE_SENIOR); }
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public final void setPrincipal() { this.dna.put(Seed.PEERTYPE, Seed.PEERTYPE_PRINCIPAL); }
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public final void put(final String key, final String value) {
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synchronized (this.dna) {
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this.dna.put(key, value);
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}
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}
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/** @return the DNA-map of this peer */
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public final ConcurrentMap<String, String> getMap() {
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return this.dna;
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}
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public final void setName(final String name) {
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synchronized (this.dna) {
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this.dna.put(Seed.NAME, checkPeerName(name));
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}
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}
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public final String getName() {
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return checkPeerName(get(Seed.NAME, "∅"));
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}
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public final String getHexHash() {
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return b64Hash2hexHash(this.hash);
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}
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public final void incSI(final int count) {
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String v = this.dna.get(Seed.INDEX_OUT);
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if (v == null) { v = Seed.ZERO; }
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this.dna.put(Seed.INDEX_OUT, Long.toString(Long.parseLong(v) + count));
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}
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public final void incRI(final int count) {
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String v = this.dna.get(Seed.INDEX_IN);
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if (v == null) { v = Seed.ZERO; }
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this.dna.put(Seed.INDEX_IN, Long.toString(Long.parseLong(v) + count));
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}
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public final void incSU(final int count) {
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String v = this.dna.get(Seed.URL_OUT);
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if (v == null) { v = Seed.ZERO; }
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this.dna.put(Seed.URL_OUT, Long.toString(Long.parseLong(v) + count));
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}
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public final void incRU(final int count) {
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String v = this.dna.get(Seed.URL_IN);
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if (v == null) { v = Seed.ZERO; }
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this.dna.put(Seed.URL_IN, Long.toString(Long.parseLong(v) + count));
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}
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public final void resetCounters(){
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this.dna.put(Seed.INDEX_OUT, Seed.ZERO);
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this.dna.put(Seed.INDEX_IN, Seed.ZERO);
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this.dna.put(Seed.URL_OUT, Seed.ZERO);
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this.dna.put(Seed.URL_IN, Seed.ZERO);
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}
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/**
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* <code>12 * 6 bit = 72 bit = 24</code> characters octal-hash
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* <p>Octal hashes are used for cache-dumps that are DHT-ready</p>
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* <p>
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* Cause: the natural order of octal hashes are the same as the b64-order of b64Hashes.
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* a hexhash cannot be used in such cases, and b64Hashes are not appropriate for file names
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* </p>
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* @param b64Hash a base64 hash
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* @return the octal representation of the given base64 hash
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*/
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public static String b64Hash2octalHash(final String b64Hash) {
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return Digest.encodeOctal(Base64Order.enhancedCoder.decode(b64Hash));
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}
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/**
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* <code>12 * 6 bit = 72 bit = 18</code> characters hex-hash
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* @param b64Hash a base64 hash
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* @return the hexadecimal representation of the given base64 hash
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*/
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public static String b64Hash2hexHash(final String b64Hash) {
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if (b64Hash.length() > 12) return "";
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// the hash string represents 12 * 6 bit = 72 bits. This is too much for a long integer.
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return Digest.encodeHex(Base64Order.enhancedCoder.decode(b64Hash));
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}
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/**
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* @param hexHash a hexadecimal hash
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* @return the base64 representation of the given hex hash
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*/
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public static String hexHash2b64Hash(final String hexHash) {
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return Base64Order.enhancedCoder.encode(Digest.decodeHex(hexHash));
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}
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/**
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* The returned version follows this pattern: <code>MAJORVERSION . MINORVERSION 0 SVN REVISION</code>
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* @return the YaCy version of this peer as a float or <code>0</code> if no valid value could be retrieved
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* from this yacySeed object
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|
*/
|
|
public final float getVersion() {
|
|
try {
|
|
return Float.parseFloat(get(Seed.VERSION, Seed.ZERO));
|
|
} catch (final NumberFormatException e) {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* get the SVN version of the peer
|
|
* @return
|
|
*/
|
|
public final int getRevision() {
|
|
return yacyVersion.revision(get(Seed.VERSION, Seed.ZERO));
|
|
}
|
|
|
|
/**
|
|
* @return the public address of the peer as IP:port string or <code>null</code> if no valid values for
|
|
* either the IP or the port could be retrieved from this yacySeed object
|
|
*/
|
|
public final String getPublicAddress() {
|
|
String ip = getIP();
|
|
if (ip == null || ip.length() < 8 || ip.length() > 60) ip = "127.0.0.1";
|
|
|
|
final String port = this.dna.get(Seed.PORT);
|
|
if (port == null || port.length() < 2 || port.length() > 5) return null;
|
|
|
|
final StringBuilder sb = new StringBuilder(ip.length() + port.length() + 1);
|
|
sb.append(ip);
|
|
sb.append(':');
|
|
sb.append(port);
|
|
return sb.toString();
|
|
}
|
|
|
|
/**
|
|
* If this seed is part of a cluster, the peer has probably the {@linkplain #alternativeIP} object set to
|
|
* a local IP. If this is present and the public IP of this peer is identical to the public IP of the own seed,
|
|
* construct an address using this IP; otherwise return the public address
|
|
* @see #getPublicAddress()
|
|
* @return the alternative IP:port if present, else the public address
|
|
*/
|
|
public final String getClusterAddress() {
|
|
if (this.alternativeIP == null) return getPublicAddress();
|
|
|
|
final String port = this.dna.get(Seed.PORT);
|
|
if ((port == null) || (port.length() < 2)) return null;
|
|
|
|
return this.alternativeIP + ":" + port;
|
|
}
|
|
|
|
/**
|
|
* @return the IP address of the peer represented by this yacySeed object as {@link InetAddress}
|
|
*/
|
|
public final InetAddress getInetAddress() {
|
|
return Domains.dnsResolve(getIP());
|
|
}
|
|
|
|
/** @return the portnumber of this seed or <code>-1</code> if not present */
|
|
public final int getPort() {
|
|
final String port = this.dna.get(Seed.PORT);
|
|
if (port == null) return -1;
|
|
/*if (port.length() < 2) return -1; It is possible to use port 0-9*/
|
|
return Integer.parseInt(port);
|
|
}
|
|
|
|
/** puts the current time into the lastseen field and cares about the time differential to UTC */
|
|
public final void setLastSeenUTC() {
|
|
// because java thinks it must apply the UTC offset to the current time,
|
|
// to create a string that looks like our current time, it adds the local UTC offset to the
|
|
// time. To create a corrected UTC Date string, we first subtract the local UTC offset.
|
|
final GenericFormatter my_SHORT_SECOND_FORMATTER = new GenericFormatter(GenericFormatter.FORMAT_SHORT_SECOND, GenericFormatter.time_second); // use our own formatter to prevent concurrency locks with other processes
|
|
final String ls = my_SHORT_SECOND_FORMATTER.format(new Date(System.currentTimeMillis() /*- DateFormatter.UTCDiff()*/));
|
|
//System.out.println("SETTING LAST-SEEN of " + this.getName() + " to " + ls);
|
|
this.dna.put(Seed.LASTSEEN, ls );
|
|
}
|
|
|
|
/**
|
|
* @return the last seen time converted to UTC in milliseconds
|
|
*/
|
|
public final long getLastSeenUTC() {
|
|
try {
|
|
final GenericFormatter my_SHORT_SECOND_FORMATTER = new GenericFormatter(GenericFormatter.FORMAT_SHORT_SECOND, GenericFormatter.time_second); // use our own formatter to prevent concurrency locks with other processes
|
|
final long t = my_SHORT_SECOND_FORMATTER.parse(get(Seed.LASTSEEN, "20040101000000")).getTime();
|
|
// getTime creates a UTC time number. But in this case java thinks, that the given
|
|
// time string is a local time, which has a local UTC offset applied.
|
|
// Therefore java subtracts the local UTC offset, to get a UTC number.
|
|
// But the given time string is already in UTC time, so the subtraction
|
|
// of the local UTC offset is wrong. We correct this here by adding the local UTC
|
|
// offset again.
|
|
return t /*+ DateFormatter.UTCDiff()*/;
|
|
} catch (final java.text.ParseException e) { // in case of an error make seed look old!!!
|
|
return System.currentTimeMillis() - AbstractFormatter.dayMillis;
|
|
} catch (final java.lang.NumberFormatException e) {
|
|
return System.currentTimeMillis() - AbstractFormatter.dayMillis;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* test if the lastSeen time of the seed has a time-out
|
|
* @param milliseconds the maximum age of the last-seen value
|
|
* @return true, if the time between the last-seen time and now is greater then the given time-out
|
|
*/
|
|
public final boolean isLastSeenTimeout(final long milliseconds) {
|
|
final long d = Math.abs(System.currentTimeMillis() - getLastSeenUTC());
|
|
return d > milliseconds;
|
|
}
|
|
|
|
public final long getBirthdate() {
|
|
if (this.birthdate > 0) return this.birthdate;
|
|
long b;
|
|
try {
|
|
final GenericFormatter my_SHORT_SECOND_FORMATTER = new GenericFormatter(GenericFormatter.FORMAT_SHORT_SECOND, GenericFormatter.time_second); // use our own formatter to prevent concurrency locks with other processes
|
|
b = my_SHORT_SECOND_FORMATTER.parse(get(Seed.BDATE, "20040101000000")).getTime();
|
|
} catch (final ParseException e) {
|
|
b = System.currentTimeMillis();
|
|
}
|
|
this.birthdate = b;
|
|
return this.birthdate;
|
|
}
|
|
|
|
/** @return the age of the seed in number of days */
|
|
public final int getAge() {
|
|
return (int) Math.abs((System.currentTimeMillis() - getBirthdate()) / 1000 / 60 / 60 / 24);
|
|
}
|
|
|
|
public void setPeerTags(final Set<String> keys) {
|
|
this.dna.put(PEERTAGS, MapTools.set2string(keys, "|", false));
|
|
}
|
|
|
|
public Set<String> getPeerTags() {
|
|
return MapTools.string2set(get(PEERTAGS, "*"), "|");
|
|
}
|
|
|
|
public boolean matchPeerTags(final HandleSet searchHashes) {
|
|
final String peertags = get(PEERTAGS, "");
|
|
if (peertags.equals("*")) return true;
|
|
final Set<String> tags = MapTools.string2set(peertags, "|");
|
|
final Iterator<String> i = tags.iterator();
|
|
while (i.hasNext()) {
|
|
if (searchHashes.has(Word.word2hash(i.next()))) return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public int getPPM() {
|
|
try {
|
|
return Integer.parseInt(get(Seed.ISPEED, Seed.ZERO));
|
|
} catch (final NumberFormatException e) {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
public float getQPM() {
|
|
try {
|
|
return Float.parseFloat(get(Seed.RSPEED, Seed.ZERO));
|
|
} catch (final NumberFormatException e) {
|
|
return 0f;
|
|
}
|
|
}
|
|
|
|
public final long getLinkCount() {
|
|
try {
|
|
return getLong(Seed.LCOUNT, 0);
|
|
} catch (final NumberFormatException e) {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
public final long getWordCount() {
|
|
try {
|
|
return getLong(Seed.ICOUNT, 0);
|
|
} catch (final NumberFormatException e) {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
private boolean getFlag(final int flag) {
|
|
final String flags = get(Seed.FLAGS, Seed.FLAGSZERO);
|
|
return (new bitfield(UTF8.getBytes(flags))).get(flag);
|
|
}
|
|
|
|
private void setFlag(final int flag, final boolean value) {
|
|
String flags = get(Seed.FLAGS, Seed.FLAGSZERO);
|
|
if (flags.length() != 4) { flags = Seed.FLAGSZERO; }
|
|
final bitfield f = new bitfield(UTF8.getBytes(flags));
|
|
f.set(flag, value);
|
|
this.dna.put(Seed.FLAGS, UTF8.String(f.getBytes()));
|
|
}
|
|
|
|
public final void setFlagDirectConnect(final boolean value) { setFlag(FLAG_DIRECT_CONNECT, value); }
|
|
public final void setFlagAcceptRemoteCrawl(final boolean value) { setFlag(FLAG_ACCEPT_REMOTE_CRAWL, value); }
|
|
public final void setFlagAcceptRemoteIndex(final boolean value) { setFlag(FLAG_ACCEPT_REMOTE_INDEX, value); }
|
|
public final boolean getFlagDirectConnect() { return getFlag(0); }
|
|
public final boolean getFlagAcceptRemoteCrawl() {
|
|
//if (getVersion() < 0.300) return false;
|
|
//if (getVersion() < 0.334) return true;
|
|
return getFlag(1);
|
|
}
|
|
public final boolean getFlagAcceptRemoteIndex() {
|
|
//if (getVersion() < 0.335) return false;
|
|
return getFlag(2);
|
|
}
|
|
public final void setUnusedFlags() {
|
|
for (int i = 4; i < 24; i++) { setFlag(i, true); }
|
|
}
|
|
public final boolean isType(final String type) {
|
|
return get(Seed.PEERTYPE, "").equals(type);
|
|
}
|
|
public final boolean isVirgin() {
|
|
return get(Seed.PEERTYPE, "").equals(Seed.PEERTYPE_VIRGIN);
|
|
}
|
|
public final boolean isJunior() {
|
|
return get(Seed.PEERTYPE, "").equals(Seed.PEERTYPE_JUNIOR);
|
|
}
|
|
public final boolean isSenior() {
|
|
return get(Seed.PEERTYPE, "").equals(Seed.PEERTYPE_SENIOR);
|
|
}
|
|
public final boolean isPrincipal() {
|
|
return get(Seed.PEERTYPE, "").equals(Seed.PEERTYPE_PRINCIPAL);
|
|
}
|
|
public final boolean isPotential() {
|
|
return isVirgin() || isJunior();
|
|
}
|
|
public final boolean isActive() {
|
|
return isSenior() || isPrincipal();
|
|
}
|
|
public final boolean isOnline() {
|
|
return isSenior() || isPrincipal();
|
|
}
|
|
public final boolean isOnline(final String type) {
|
|
return type.equals(Seed.PEERTYPE_SENIOR) || type.equals(Seed.PEERTYPE_PRINCIPAL);
|
|
}
|
|
|
|
public long nextLong(final Random random, final long n) {
|
|
return Math.abs(random.nextLong()) % n;
|
|
}
|
|
|
|
private static byte[] bestGap(final SeedDB seedDB) {
|
|
final byte[] randomHash = randomHash();
|
|
if ((seedDB == null) || (seedDB.sizeConnected() <= 2)) {
|
|
// use random hash
|
|
return randomHash;
|
|
}
|
|
// find gaps
|
|
final TreeMap<Long, String> gaps = hashGaps(seedDB);
|
|
|
|
// take one gap; prefer biggest but take also another smaller by chance
|
|
String interval = null;
|
|
while (!gaps.isEmpty()) {
|
|
interval = gaps.remove(gaps.lastKey());
|
|
if (random.nextBoolean()) break;
|
|
}
|
|
if (interval == null) return randomHash();
|
|
|
|
// find dht position and size of gap
|
|
final long left = FlatWordPartitionScheme.std.dhtPosition(ASCII.getBytes(interval.substring(0, 12)), null);
|
|
final long right = FlatWordPartitionScheme.std.dhtPosition(ASCII.getBytes(interval.substring(12)), null);
|
|
final long gap8 = FlatWordPartitionScheme.dhtDistance(left, right) >> 3; // 1/8 of a gap
|
|
final long gapx = gap8 + (Math.abs(random.nextLong()) % (6 * gap8));
|
|
final long gappos = (Long.MAX_VALUE - left >= gapx) ? left + gapx : (left - Long.MAX_VALUE) + gapx;
|
|
final byte[] computedHash = FlatWordPartitionScheme.positionToHash(gappos);
|
|
// the computed hash is the perfect position (modulo gap4 population and gap alternatives)
|
|
// this is too tight. The hash must be more randomized. We take only (!) the first two bytes
|
|
// of the computed hash and add random bytes at the remaining positions. The first two bytes
|
|
// of the hash may have 64*64 = 2^^10 positions, good for over 1 million peers.
|
|
byte[] combined = new byte[12];
|
|
System.arraycopy(computedHash, 0, combined, 0, 2);
|
|
System.arraycopy(randomHash, 2, combined, 2, 10);
|
|
// finally check if the hash is already known
|
|
while (seedDB.hasConnected(combined) || seedDB.hasDisconnected(combined) || seedDB.hasPotential(combined)) {
|
|
// if we are lucky then this loop will never run
|
|
combined = randomHash();
|
|
}
|
|
return combined;
|
|
}
|
|
|
|
private static TreeMap<Long, String> hashGaps(final SeedDB seedDB) {
|
|
final TreeMap<Long, String>gaps = new TreeMap<Long, String>();
|
|
if (seedDB == null) return gaps;
|
|
|
|
final Iterator<Seed> i = seedDB.seedsConnected(true, false, null, (float) 0.0);
|
|
long l;
|
|
Seed s0 = null, s1, first = null;
|
|
while (i.hasNext()) {
|
|
s1 = i.next();
|
|
if (s0 == null) {
|
|
s0 = s1;
|
|
first = s0;
|
|
continue;
|
|
}
|
|
l = FlatWordPartitionScheme.dhtDistance(
|
|
FlatWordPartitionScheme.std.dhtPosition(ASCII.getBytes(s0.hash), null),
|
|
FlatWordPartitionScheme.std.dhtPosition(ASCII.getBytes(s1.hash), null));
|
|
gaps.put(l, s0.hash + s1.hash);
|
|
s0 = s1;
|
|
}
|
|
// compute also the last gap
|
|
if ((first != null) && (s0 != null)) {
|
|
l = FlatWordPartitionScheme.dhtDistance(
|
|
FlatWordPartitionScheme.std.dhtPosition(ASCII.getBytes(s0.hash), null),
|
|
FlatWordPartitionScheme.std.dhtPosition(ASCII.getBytes(first.hash), null));
|
|
gaps.put(l, s0.hash + first.hash);
|
|
}
|
|
return gaps;
|
|
}
|
|
|
|
public static Seed genLocalSeed(final SeedDB db) {
|
|
return genLocalSeed(db, 0, null); // an anonymous peer
|
|
}
|
|
|
|
public static Seed genLocalSeed(final SeedDB db, final int port, final String name) {
|
|
// generate a seed for the local peer
|
|
// this is the birthplace of a seed, that then will start to travel to other peers
|
|
|
|
final String hashs = ASCII.String(bestGap(db));
|
|
Network.log.logInfo("init: OWN SEED = " + hashs);
|
|
|
|
final Seed newSeed = new Seed(hashs);
|
|
|
|
// now calculate other information about the host
|
|
newSeed.dna.put(Seed.NAME, (name) == null ? defaultPeerName() : name);
|
|
newSeed.dna.put(Seed.PORT, Integer.toString((port <= 0) ? 8090 : port));
|
|
return newSeed;
|
|
}
|
|
|
|
//public static String randomHash() { return "zLXFf5lTteUv"; } // only for debugging
|
|
|
|
public static byte[] randomHash() {
|
|
final String hash =
|
|
Base64Order.enhancedCoder.encode(Digest.encodeMD5Raw(Long.toString(random.nextLong()))).substring(0, 6) +
|
|
Base64Order.enhancedCoder.encode(Digest.encodeMD5Raw(Long.toString(random.nextLong()))).substring(0, 6);
|
|
return ASCII.getBytes(hash);
|
|
}
|
|
|
|
public static Seed genRemoteSeed(final String seedStr, final String key, final boolean ownSeed, final String patchIP) throws IOException {
|
|
// this method is used to convert the external representation of a seed into a seed object
|
|
// yacyCore.log.logFinest("genRemoteSeed: seedStr=" + seedStr + " key=" + key);
|
|
|
|
// check protocol and syntax of seed
|
|
if (seedStr == null) throw new IOException("seedStr == null");
|
|
if (seedStr.length() == 0) throw new IOException("seedStr.length() == 0");
|
|
final String seed = crypt.simpleDecode(seedStr, key);
|
|
if (seed == null) throw new IOException("seed == null");
|
|
if (seed.length() == 0) throw new IOException("seed.length() == 0");
|
|
|
|
// extract hash
|
|
final ConcurrentHashMap<String, String> dna = MapTools.string2map(seed, ",");
|
|
final String hash = dna.remove(Seed.HASH);
|
|
if (hash == null) throw new IOException("hash == null");
|
|
final Seed resultSeed = new Seed(hash, dna);
|
|
|
|
// check semantics of content
|
|
String testResult = resultSeed.isProper(ownSeed);
|
|
if (testResult != null && patchIP != null) {
|
|
// in case that this proper-Test fails and a patchIP is given
|
|
// then replace the given IP in the resultSeed with given patchIP
|
|
// this is done if a remote peer reports its IP in a wrong way (maybe fraud attempt)
|
|
resultSeed.setIP(patchIP);
|
|
testResult = resultSeed.isProper(ownSeed);
|
|
}
|
|
if (testResult != null) throw new IOException("seed is not proper (" + testResult + "): " + resultSeed);
|
|
|
|
// seed ok
|
|
return resultSeed;
|
|
}
|
|
|
|
// TODO: add here IP ranges to accept also intranet networks
|
|
public final String isProper(final boolean checkOwnIP) {
|
|
// checks if everything is ok with that seed
|
|
|
|
// check hash
|
|
if (this.hash == null) return "hash is null";
|
|
if (this.hash.length() != Word.commonHashLength) return "wrong hash length (" + this.hash.length() + ")";
|
|
|
|
// name
|
|
final String peerName = this.dna.get(Seed.NAME);
|
|
if (peerName == null) return "no peer name given";
|
|
this.dna.put(Seed.NAME, checkPeerName(peerName));
|
|
|
|
// type
|
|
final String peerType = getPeerType();
|
|
if ((peerType == null) ||
|
|
!(peerType.equals(Seed.PEERTYPE_VIRGIN) || peerType.equals(Seed.PEERTYPE_JUNIOR)
|
|
|| peerType.equals(Seed.PEERTYPE_SENIOR) || peerType.equals(Seed.PEERTYPE_PRINCIPAL)))
|
|
return "invalid peerType '" + peerType + "'";
|
|
|
|
// check IP
|
|
if (!checkOwnIP) {
|
|
// checking of IP is omitted if we read the own seed file
|
|
final String ipCheck = isProperIP(getIP());
|
|
if (ipCheck != null) return ipCheck;
|
|
}
|
|
|
|
// seedURL
|
|
final String seedURL = this.dna.get(SEEDLISTURL);
|
|
if (seedURL != null && seedURL.length() > 0) {
|
|
if (!seedURL.startsWith("http://") && !seedURL.startsWith("https://")) return "wrong protocol for seedURL";
|
|
try {
|
|
final URL url = new URL(seedURL);
|
|
final String host = url.getHost();
|
|
if (host.equals("localhost") || host.startsWith("127.") || (host.startsWith("0:0:0:0:0:0:0:1"))) return "seedURL in localhost rejected";
|
|
} catch (final MalformedURLException e) {
|
|
return "seedURL malformed";
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
public static final String isProperIP(final String ipString) {
|
|
// returns null if ipString is proper, a string with the cause otherwise
|
|
if (ipString == null) return ipString + " -> IP is null";
|
|
if (ipString.length() > 0 && ipString.length() < 8) return ipString + " -> IP is too short: ";
|
|
if (Switchboard.getSwitchboard().isAllIPMode()) return null;
|
|
final boolean islocal = Domains.isLocal(ipString, null);
|
|
//if (islocal && Switchboard.getSwitchboard().isGlobalMode()) return ipString + " - local IP for global mode rejected";
|
|
if (!islocal && Switchboard.getSwitchboard().isIntranetMode()) return ipString + " - global IP for intranet mode rejected";
|
|
return null;
|
|
}
|
|
|
|
@Override
|
|
public final String toString() {
|
|
final ConcurrentMap<String, String> copymap = new ConcurrentHashMap<String, String>();
|
|
copymap.putAll(this.dna);
|
|
copymap.put(Seed.HASH, this.hash); // set hash into seed code structure
|
|
return MapTools.map2string(copymap, ",", true); // generate string representation
|
|
}
|
|
|
|
public final String genSeedStr(final String key) {
|
|
// use a default encoding
|
|
final String r = toString();
|
|
final String z = crypt.simpleEncode(r, key, 'z');
|
|
final String b = crypt.simpleEncode(r, key, 'b');
|
|
// the compressed string may be longer that the uncompressed if there is too much overhead for compression meta-info
|
|
// take simply that string that is shorter
|
|
if (b.length() < z.length()) return b; else return z;
|
|
}
|
|
|
|
public final void save(final File f) throws IOException {
|
|
final String out = crypt.simpleEncode(toString(), null, 'p');
|
|
final FileWriter fw = new FileWriter(f);
|
|
fw.write(out, 0, out.length());
|
|
fw.close();
|
|
}
|
|
|
|
public static Seed load(final File f) throws IOException {
|
|
final FileReader fr = new FileReader(f);
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|
final char[] b = new char[(int) f.length()];
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|
fr.read(b, 0, b.length);
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|
fr.close();
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final Seed mySeed = genRemoteSeed(new String(b), null, true, null);
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assert mySeed != null; // in case of an error, an IOException is thrown
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|
mySeed.dna.put(Seed.IP, ""); // set own IP as unknown
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|
return mySeed;
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|
}
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|
|
|
@Override
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public final Seed clone() {
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|
final ConcurrentHashMap<String, String> ndna = new ConcurrentHashMap<String, String>();
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|
ndna.putAll(this.dna);
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|
return new Seed(this.hash, ndna);
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|
}
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|
|
|
@Override
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|
public int compareTo(final Seed arg0) {
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|
// TODO Auto-generated method stub
|
|
final int o1 = hashCode();
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|
final int o2 = arg0.hashCode();
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|
if (o1 > o2) return 1;
|
|
if (o2 > o1) return -1;
|
|
return 0;
|
|
}
|
|
|
|
@Override
|
|
public int hashCode() {
|
|
return (int) (Base64Order.enhancedCoder.cardinal(this.hash) & (Integer.MAX_VALUE));
|
|
}
|
|
|
|
@Override
|
|
public int compare(final Seed o1, final Seed o2) {
|
|
return o1.compareTo(o2);
|
|
}
|
|
|
|
}
|