yacy_search_server/source/de/anomic/plasma/plasmaSwitchboard.java

// plasmaSwitchboard.java
// (C) 2004-2007 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
// first published 2004 on http://yacy.net
//
// This is a part of YaCy, a peer-to-peer based web search engine
//
// $LastChangedDate$
// $LastChangedRevision$
// $LastChangedBy$
//
// LICENSE
// 
// 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

/*
   This class holds the run-time environment of the plasma
   Search Engine. It's data forms a blackboard which can be used
   to organize running jobs around the indexing algorithm.
   The blackboard consist of the following entities:
   - storage: one plasmaStore object with the url-based database
   - configuration: initialized by properties once, then by external functions
   - job queues: for parsing, condensing, indexing
   - black/blue/whitelists: controls input and output to the index
 
   this class is also the core of the http crawling.
   There are some items that need to be respected when crawling the web:
   1) respect robots.txt
   2) do not access one domain too frequently, wait between accesses
   3) remember crawled URL's and do not access again too early
   4) priorization of specific links should be possible (hot-lists)
   5) attributes for crawling (depth, filters, hot/black-lists, priority)
   6) different crawling jobs with different attributes ('Orders') simultanoulsy
 
   We implement some specific tasks and use different database to archieve these goals:
   - a database 'crawlerDisallow.db' contains all url's that shall not be crawled
   - a database 'crawlerDomain.db' holds all domains and access times, where we loaded the disallow tables
     this table contains the following entities:
     <flag: robotes exist/not exist, last access of robots.txt, last access of domain (for access scheduling)>
   - four databases for scheduled access: crawlerScheduledHotText.db, crawlerScheduledColdText.db,
     crawlerScheduledHotMedia.db and crawlerScheduledColdMedia.db
   - two stacks for new URLS: newText.stack and newMedia.stack
   - two databases for URL double-check: knownText.db and knownMedia.db
   - one database with crawling orders: crawlerOrders.db
 
   The Information flow of a single URL that is crawled is as follows:
   - a html file is loaded from a specific URL within the module httpdProxyServlet as
     a process of the proxy.
   - the file is passed to httpdProxyCache. Here it's processing is delayed until the proxy is idle.
   - The cache entry is passed on to the plasmaSwitchboard. There the URL is stored into plasmaLURL where
     the URL is stored under a specific hash. The URL's from the content are stripped off, stored in plasmaLURL
     with a 'wrong' date (the date of the URL's are not known at this time, only after fetching) and stacked with
     plasmaCrawlerTextStack. The content is read and splitted into rated words in plasmaCondenser.
     The splitted words are then integrated into the index with plasmaSearch.
   - In plasmaSearch the words are indexed by reversing the relation between URL and words: one URL points
     to many words, the words within the document at the URL. After reversing, one word points
     to many URL's, all the URL's where the word occurrs. One single word->URL-hash relation is stored in
     plasmaIndexEntry. A set of plasmaIndexEntries is a reverse word index.
     This reverse word index is stored temporarly in plasmaIndexCache.
   - In plasmaIndexCache the single plasmaIndexEntry'ies are collected and stored into a plasmaIndex - entry
     These plasmaIndex - Objects are the true reverse words indexes.
   - in plasmaIndex the plasmaIndexEntry - objects are stored in a kelondroTree; an indexed file in the file system.
 
   The information flow of a search request is as follows:
   - in httpdFileServlet the user enters a search query, which is passed to plasmaSwitchboard
   - in plasmaSwitchboard, the query is passed to plasmaSearch.
   - in plasmaSearch, the plasmaSearch.result object is generated by simultanous enumeration of
     URL hases in the reverse word indexes plasmaIndex
   - (future: the plasmaSearch.result - object is used to identify more key words for a new search)
 
 
 
 */

package de.anomic.plasma;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.Constructor;
import java.net.MalformedURLException;
import java.security.NoSuchAlgorithmException;
import java.security.PublicKey;
import java.security.spec.InvalidKeySpecException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import java.util.TreeMap;
import java.util.TreeSet;
import java.util.concurrent.ConcurrentHashMap;
import java.util.regex.Pattern;

import de.anomic.content.DCEntry;
import de.anomic.content.RSSMessage;
import de.anomic.content.file.SurrogateReader;
import de.anomic.crawler.CrawlEntry;
import de.anomic.crawler.CrawlProfile;
import de.anomic.crawler.CrawlQueues;
import de.anomic.crawler.CrawlStacker;
import de.anomic.crawler.CrawlSwitchboard;
import de.anomic.crawler.HTTPLoader;
import de.anomic.crawler.ImporterManager;
import de.anomic.crawler.IndexingStack;
import de.anomic.crawler.NoticedURL;
import de.anomic.crawler.ProtocolLoader;
import de.anomic.crawler.ResourceObserver;
import de.anomic.crawler.ResultImages;
import de.anomic.crawler.ResultURLs;
import de.anomic.crawler.RobotsTxt;
import de.anomic.crawler.ZURL;
import de.anomic.crawler.CrawlProfile.entry;
import de.anomic.crawler.IndexingStack.QueueEntry;
import de.anomic.data.Blacklist;
import de.anomic.data.URLLicense;
import de.anomic.data.blogBoard;
import de.anomic.data.blogBoardComments;
import de.anomic.data.bookmarksDB;
import de.anomic.data.listManager;
import de.anomic.data.messageBoard;
import de.anomic.data.userDB;
import de.anomic.data.wiki.wikiBoard;
import de.anomic.data.wiki.wikiCode;
import de.anomic.data.wiki.wikiParser;
import de.anomic.http.httpClient;
import de.anomic.http.httpRemoteProxyConfig;
import de.anomic.http.httpRequestHeader;
import de.anomic.http.httpResponseHeader;
import de.anomic.http.httpd;
import de.anomic.http.httpdRobotsTxtConfig;
import de.anomic.kelondro.order.Digest;
import de.anomic.kelondro.order.NaturalOrder;
import de.anomic.kelondro.text.Segment;
import de.anomic.kelondro.text.metadataPrototype.URLMetadataRow;
import de.anomic.kelondro.order.Base64Order;
import de.anomic.kelondro.util.DateFormatter;
import de.anomic.kelondro.util.FileUtils;
import de.anomic.kelondro.util.MemoryControl;
import de.anomic.kelondro.util.SetTools;
import de.anomic.net.UPnP;
import de.anomic.plasma.parser.Document;
import de.anomic.plasma.parser.ParserException;
import de.anomic.plasma.parser.Word;
import de.anomic.plasma.parser.Condenser;
import de.anomic.search.Query;
import de.anomic.search.RankingProfile;
import de.anomic.server.serverAbstractSwitch;
import de.anomic.server.serverBusyThread;
import de.anomic.server.serverCore;
import de.anomic.server.serverDomains;
import de.anomic.server.serverInstantBusyThread;
import de.anomic.server.serverObjects;
import de.anomic.server.serverProcessor;
import de.anomic.server.serverProcessorJob;
import de.anomic.server.serverProfiling;
import de.anomic.server.serverSemaphore;
import de.anomic.server.serverSwitch;
import de.anomic.server.serverSystem;
import de.anomic.server.serverThread;
import de.anomic.tools.crypt;
import de.anomic.tools.CryptoLib;
import de.anomic.xml.RSSFeed;
import de.anomic.yacy.yacyClient;
import de.anomic.yacy.yacyCore;
import de.anomic.yacy.yacyNewsPool;
import de.anomic.yacy.yacyNewsRecord;
import de.anomic.yacy.yacySeed;
import de.anomic.yacy.Tray;
import de.anomic.yacy.yacySeedDB;
import de.anomic.yacy.yacyURL;
import de.anomic.yacy.yacyUpdateLocation;
import de.anomic.yacy.yacyRelease;
import de.anomic.yacy.yacyVersion;
import de.anomic.yacy.dht.Dispatcher;
import de.anomic.yacy.dht.PeerSelection;
import de.anomic.yacy.logging.Log;

public final class plasmaSwitchboard extends serverAbstractSwitch<IndexingStack.QueueEntry> implements serverSwitch<IndexingStack.QueueEntry> {
    
    // load slots
    public  static int  xstackCrawlSlots     = 2000;
    private        int  dhtMaxContainerCount = 500;
    private        int  dhtMaxReferenceCount = 1000;
    public  static long lastPPMUpdate        = System.currentTimeMillis()- 30000;

    // colored list management
    public static TreeSet<String> badwords       = null;
    public static TreeSet<String> blueList       = null;
    public static TreeSet<String> stopwords      = null;    
    public static TreeSet<byte[]> badwordHashes  = null;
    public static TreeSet<byte[]> blueListHashes = null;
    public static TreeSet<byte[]> stopwordHashes = null;    
    public static Blacklist urlBlacklist = null;
    
    public static wikiParser wikiParser = null;
    
    // storage management
    public  File                           htCachePath;
    public  File                           plasmaPath;
    public  File                           listsPath;
    public  File                           htDocsPath;
    public  File                           rankingPath;
    public  File                           workPath;
    public  File                           releasePath;
    public  File                           surrogatesInPath;
    public  File                           surrogatesOutPath;
    public  Map<String, String>            rankingPermissions;
    public  Segment                        indexSegment;
    public  CrawlSwitchboard               crawler;
    public  CrawlQueues                    crawlQueues;
    public  ResultURLs                     crawlResults;
    public  CrawlStacker                   crawlStacker;
    public  messageBoard                   messageDB;
    public  wikiBoard                      wikiDB;
    public  blogBoard                      blogDB;
    public  blogBoardComments              blogCommentDB;
    public  RobotsTxt                      robots;
    public  boolean                        rankingOn;
    public  plasmaRankingDistribution      rankingOwnDistribution;
    public  plasmaRankingDistribution      rankingOtherDistribution;
    public  HashMap<String, Object[]>      outgoingCookies, incomingCookies;
    public  plasmaParser                   parser;
    public  volatile long                  proxyLastAccess, localSearchLastAccess, remoteSearchLastAccess;
    public  yacyCore                       yc;
    public  ResourceObserver               observer;
    public  userDB                         userDB;
    public  bookmarksDB                    bookmarksDB;
    public  plasmaWebStructure             webStructure;
    public  ImporterManager                dbImportManager;
    public  ArrayList<Query>   localSearches; // array of search result properties as HashMaps
    public  ArrayList<Query>   remoteSearches; // array of search result properties as HashMaps
    public  ConcurrentHashMap<String, TreeSet<Long>> localSearchTracker, remoteSearchTracker; // mappings from requesting host to a TreeSet of Long(access time)
    public  long                           indexedPages = 0;
    public  double                         requestedQueries = 0d;
    public  double                         totalQPM = 0d;
    public  TreeMap<byte[], String>        clusterhashes; // map of peerhash(String)/alternative-local-address as ip:port or only ip (String) or null if address in seed should be used
    public  URLLicense                     licensedURLs;
    public  List<Pattern>                  networkWhitelist, networkBlacklist;
    public  Dispatcher                     dhtDispatcher;
    public  List<String>                   trail;
    public  yacySeedDB                     peers;
    
    public serverProcessor<indexingQueueEntry> indexingDocumentProcessor;
    public serverProcessor<indexingQueueEntry> indexingCondensementProcessor;
    public serverProcessor<indexingQueueEntry> indexingAnalysisProcessor;
    public serverProcessor<indexingQueueEntry> indexingStorageProcessor;
    
    public httpdRobotsTxtConfig robotstxtConfig = null;
    
    
    private final serverSemaphore shutdownSync = new serverSemaphore(0);
    private boolean terminate = false;
    
    //private Object  crawlingPausedSync = new Object();
    //private boolean crawlingIsPaused = false;    
    
    public Hashtable<String, Object[]> crawlJobsStatus = new Hashtable<String, Object[]>(); 
    
    private static plasmaSwitchboard sb = null;
    
    public plasmaSwitchboard(final File rootPath, final String initPath, final String configPath, final boolean applyPro) throws IOException {
        super(rootPath, initPath, configPath, applyPro);
        serverProfiling.startSystemProfiling();
        sb=this;
        
        // set loglevel and log
        setLog(new Log("PLASMA"));
        if (applyPro) this.log.logInfo("This is the pro-version of YaCy");
        
        // UPnP port mapping
        if (getConfigBool(plasmaSwitchboardConstants.UPNP_ENABLED, false))
        	serverInstantBusyThread.oneTimeJob(UPnP.class, "addPortMapping", UPnP.log, 0);
        
        // init TrayIcon if possible
        Tray.init(this);
        
        // remote proxy configuration
        httpRemoteProxyConfig.init(this);
        
        // load values from configs        
        this.plasmaPath   = getConfigPath(plasmaSwitchboardConstants.PLASMA_PATH, plasmaSwitchboardConstants.PLASMA_PATH_DEFAULT);
        this.log.logConfig("Plasma DB Path: " + this.plasmaPath.toString());
        final File indexPrimaryPath = getConfigPath(plasmaSwitchboardConstants.INDEX_PRIMARY_PATH, plasmaSwitchboardConstants.INDEX_PATH_DEFAULT);
        this.log.logConfig("Index Primary Path: " + indexPrimaryPath.toString());
        this.listsPath      = getConfigPath(plasmaSwitchboardConstants.LISTS_PATH, plasmaSwitchboardConstants.LISTS_PATH_DEFAULT);
        this.log.logConfig("Lists Path:     " + this.listsPath.toString());
        this.htDocsPath   = getConfigPath(plasmaSwitchboardConstants.HTDOCS_PATH, plasmaSwitchboardConstants.HTDOCS_PATH_DEFAULT);
        this.log.logConfig("HTDOCS Path:    " + this.htDocsPath.toString());
        this.rankingPath   = getConfigPath(plasmaSwitchboardConstants.RANKING_PATH, plasmaSwitchboardConstants.RANKING_PATH_DEFAULT);
        this.log.logConfig("Ranking Path:    " + this.rankingPath.toString());
        this.rankingPermissions = new HashMap<String, String>(); // mapping of permission - to filename.
        this.workPath   = getConfigPath(plasmaSwitchboardConstants.WORK_PATH, plasmaSwitchboardConstants.WORK_PATH_DEFAULT);
        this.log.logConfig("Work Path:    " + this.workPath.toString());
        
        // set a high maximum cache size to current size; this is adopted later automatically
        final int wordCacheMaxCount = (int) getConfigLong(plasmaSwitchboardConstants.WORDCACHE_MAX_COUNT, 20000);
        setConfig(plasmaSwitchboardConstants.WORDCACHE_MAX_COUNT, Integer.toString(wordCacheMaxCount));
        
        // set network-specific performance attributes
        if (this.firstInit) {
            setRemotecrawlPPM(Math.max(1, (int) getConfigLong("network.unit.remotecrawl.speed", 60)));
        }

        // load the network definition
        overwriteNetworkDefinition();

        // start indexing management
        log.logConfig("Starting Indexing Management");
        final String networkName = getConfig(plasmaSwitchboardConstants.NETWORK_NAME, "");
        final long fileSizeMax = (serverSystem.isWindows) ? sb.getConfigLong("filesize.max.win", (long) Integer.MAX_VALUE) : sb.getConfigLong("filesize.max.other", (long) Integer.MAX_VALUE);
        final int redundancy = (int) sb.getConfigLong("network.unit.dhtredundancy.senior", 1);
        final int partitionExponent = (int) sb.getConfigLong("network.unit.dht.partitionExponent", 0);
        try {
			final File networkRoot = new File(new File(indexPrimaryPath, networkName), "NETWORK");
	        networkRoot.mkdirs();
	        final File mySeedFile = new File(networkRoot, yacySeedDB.DBFILE_OWN_SEED);
	        peers = new yacySeedDB(
	                networkRoot,
	                "seed.new.heap",
	                "seed.old.heap",
	                "seed.pot.heap",
	                mySeedFile,
	                redundancy,
	                partitionExponent);
	        indexSegment = new Segment(
                    log,
                    new File(new File(indexPrimaryPath, networkName), "TEXT"),
                    wordCacheMaxCount,
                    fileSizeMax);
	        crawler = new CrawlSwitchboard(
	                peers,
	                networkName,
	                log,
	                new File(new File(indexPrimaryPath, networkName), "QUEUES"));
		} catch (IOException e1) {
			e1.printStackTrace();
			indexSegment = null;
		}
        crawlResults = new ResultURLs();
        
        // start yacy core
        log.logConfig("Starting YaCy Protocol Core");
        this.yc = new yacyCore(this);
        serverInstantBusyThread.oneTimeJob(this, "loadSeedLists", yacyCore.log, 0);
        //final long startedSeedListAquisition = System.currentTimeMillis();
        
        // init a DHT transmission dispatcher
        this.dhtDispatcher = new Dispatcher(
                indexSegment.termIndex(),
                indexSegment.urlMetadata(),
                peers,
                true, 
                30000);
        
        // set up local robots.txt
        this.robotstxtConfig = httpdRobotsTxtConfig.init(this);
        
        // setting timestamp of last proxy access
        this.proxyLastAccess = System.currentTimeMillis() - 10000;
        this.localSearchLastAccess = System.currentTimeMillis() - 10000;
        this.remoteSearchLastAccess = System.currentTimeMillis() - 10000;
        this.webStructure = new plasmaWebStructure(log, rankingPath, "LOCAL/010_cr/", getConfig("CRDist0Path", plasmaRankingDistribution.CR_OWN), new File(plasmaPath, "webStructure.map"));
        
        // configuring list path
        if (!(listsPath.exists())) listsPath.mkdirs();
        
        // load coloured lists
        if (blueList == null) {
            // read only once upon first instantiation of this class
            final String f = getConfig(plasmaSwitchboardConstants.LIST_BLUE, plasmaSwitchboardConstants.LIST_BLUE_DEFAULT);
            final File plasmaBlueListFile = new File(f);
            if (f != null) blueList = SetTools.loadList(plasmaBlueListFile, NaturalOrder.naturalComparator); else blueList= new TreeSet<String>();
            blueListHashes = Word.words2hashes(blueList);
            this.log.logConfig("loaded blue-list from file " + plasmaBlueListFile.getName() + ", " +
            blueList.size() + " entries, " +
            ppRamString(plasmaBlueListFile.length()/1024));
        }
        
        // load the black-list / inspired by [AS]
        final File blacklistsPath = getConfigPath(plasmaSwitchboardConstants.LISTS_PATH, plasmaSwitchboardConstants.LISTS_PATH_DEFAULT);
        String[] blacklistClassName = new String[] {
                                getConfig(plasmaSwitchboardConstants.BLACKLIST_CLASS, plasmaSwitchboardConstants.BLACKLIST_CLASS_DEFAULT),
                                plasmaSwitchboardConstants.BLACKLIST_CLASS_DEFAULT
        };
            
        this.log.logConfig("Starting blacklist engine ...");
        urlBlacklist = null;
        for (int i = 0; i < blacklistClassName.length; i++) {
            try {
                final Class<?> blacklistClass = Class.forName(blacklistClassName[i]);
                final Constructor<?> blacklistClassConstr = blacklistClass.getConstructor( new Class[] { File.class } );
                urlBlacklist = (Blacklist) blacklistClassConstr.newInstance(new Object[] { blacklistsPath });
                this.log.logFine("Used blacklist engine class: " + blacklistClassName);
                this.log.logConfig("Using blacklist engine: " + urlBlacklist.getEngineInfo());
                break;
            } catch (final Exception e) {
                continue; // try next
            } catch (final Error e) {
                continue; // try next
            }
        }
        if (urlBlacklist == null) {
            this.log.logSevere("Unable to load the blacklist engine");
            System.exit(-1);
        }
      
        this.log.logConfig("Loading backlist data ...");
        listManager.switchboard = this;
        listManager.listsPath = blacklistsPath;        
        listManager.reloadBlacklists();

        // load badwords (to filter the topwords)
        if (badwords == null) {
            final File badwordsFile = new File(rootPath, plasmaSwitchboardConstants.LIST_BADWORDS_DEFAULT);
            badwords = SetTools.loadList(badwordsFile, NaturalOrder.naturalComparator);
            badwordHashes = Word.words2hashes(badwords);
            this.log.logConfig("loaded badwords from file " + badwordsFile.getName() +
                               ", " + badwords.size() + " entries, " +
                               ppRamString(badwordsFile.length()/1024));
        }

        // load stopwords
        if (stopwords == null) {
            final File stopwordsFile = new File(rootPath, plasmaSwitchboardConstants.LIST_STOPWORDS_DEFAULT);
            stopwords = SetTools.loadList(stopwordsFile, NaturalOrder.naturalComparator);
            stopwordHashes = Word.words2hashes(stopwords);
            this.log.logConfig("loaded stopwords from file " + stopwordsFile.getName() + ", " +
            stopwords.size() + " entries, " +
            ppRamString(stopwordsFile.length()/1024));
        }

        // load ranking tables
        final File YBRPath = new File(rootPath, "ranking/YBR");
        if (YBRPath.exists()) {
            plasmaSearchRankingProcess.loadYBR(YBRPath, 15);
        }
        
        // loading the robots.txt db
        this.log.logConfig("Initializing robots.txt DB");
        final File robotsDBFile = new File(this.plasmaPath, "crawlRobotsTxt.heap");
        robots = new RobotsTxt(robotsDBFile);
        this.log.logConfig("Loaded robots.txt DB from file " + robotsDBFile.getName() +
        ", " + robots.size() + " entries" +
        ", " + ppRamString(robotsDBFile.length()/1024));
        
        // start a cache manager
        log.logConfig("Starting HT Cache Manager");
        
        // create the cache directory
        htCachePath = getConfigPath(plasmaSwitchboardConstants.HTCACHE_PATH, plasmaSwitchboardConstants.HTCACHE_PATH_DEFAULT);
        this.log.logInfo("HTCACHE Path = " + htCachePath.getAbsolutePath());
        final long maxCacheSize = 1024 * 1024 * Long.parseLong(getConfig(plasmaSwitchboardConstants.PROXY_CACHE_SIZE, "2")); // this is megabyte
        plasmaHTCache.init(htCachePath, peers.mySeed().hash, maxCacheSize);
        
        // create the surrogates directories
        surrogatesInPath = getConfigPath(plasmaSwitchboardConstants.SURROGATES_IN_PATH, plasmaSwitchboardConstants.SURROGATES_IN_PATH_DEFAULT);
        this.log.logInfo("surrogates.in Path = " + surrogatesInPath.getAbsolutePath());
        surrogatesInPath.mkdirs();
        surrogatesOutPath = getConfigPath(plasmaSwitchboardConstants.SURROGATES_OUT_PATH, plasmaSwitchboardConstants.SURROGATES_OUT_PATH_DEFAULT);
        this.log.logInfo("surrogates.out Path = " + surrogatesOutPath.getAbsolutePath());
        surrogatesOutPath.mkdirs();
        
        // create the release download directory
        releasePath = getConfigPath(plasmaSwitchboardConstants.RELEASE_PATH, plasmaSwitchboardConstants.RELEASE_PATH_DEFAULT);
        releasePath.mkdirs();
        this.log.logInfo("RELEASE Path = " + releasePath.getAbsolutePath());
       
        // starting message board
        initMessages();
        
        // starting wiki
        initWiki();
        
        //starting blog
        initBlog();
        
        // Init User DB
        this.log.logConfig("Loading User DB");
        final File userDbFileOld = new File(getRootPath(), "DATA/SETTINGS/user.db");
        final File userDbFile = new File(getRootPath(), "DATA/SETTINGS/user.heap");
        this.userDB = new userDB(userDbFileOld, userDbFile);
        this.log.logConfig("Loaded User DB from file " + userDbFile.getName() +
        ", " + this.userDB.size() + " entries" +
        ", " + ppRamString(userDbFile.length()/1024));
        
        //Init bookmarks DB
        initBookmarks();
        
        // make parser
        log.logConfig("Starting Parser");
        this.parser = new plasmaParser();
        
        // define an extension-blacklist
        log.logConfig("Parser: Initializing Extension Mappings for Media/Parser");
        plasmaParser.initMediaExt(plasmaParser.extString2extList(getConfig(plasmaSwitchboardConstants.PARSER_MEDIA_EXT,"")));
        plasmaParser.initSupportedHTMLFileExt(plasmaParser.extString2extList(getConfig(plasmaSwitchboardConstants.PARSER_MEDIA_EXT_PARSEABLE,"")));
        
        // define a realtime parsable mimetype list
        log.logConfig("Parser: Initializing Mime Types");
        plasmaParser.initHTMLParsableMimeTypes(getConfig(plasmaSwitchboardConstants.PARSER_MIMETYPES_HTML, "application/xhtml+xml,text/html,text/plain"));
        plasmaParser.initParseableMimeTypes(plasmaParser.PARSER_MODE_PROXY, getConfig(plasmaSwitchboardConstants.PARSER_MIMETYPES_PROXY, null));
        plasmaParser.initParseableMimeTypes(plasmaParser.PARSER_MODE_CRAWLER, getConfig(plasmaSwitchboardConstants.PARSER_MIMETYPES_CRAWLER, null));
        plasmaParser.initParseableMimeTypes(plasmaParser.PARSER_MODE_ICAP, getConfig(plasmaSwitchboardConstants.PARSER_MIMETYPES_ICAP, null));
        plasmaParser.initParseableMimeTypes(plasmaParser.PARSER_MODE_URLREDIRECTOR, getConfig(plasmaSwitchboardConstants.PARSER_MIMETYPES_URLREDIRECTOR, null));
        plasmaParser.initParseableMimeTypes(plasmaParser.PARSER_MODE_IMAGE, getConfig(plasmaSwitchboardConstants.PARSER_MIMETYPES_IMAGE, null));
        
        // start a loader
        log.logConfig("Starting Crawl Loader");
        this.crawlQueues = new CrawlQueues(this, plasmaPath);
        this.crawlQueues.noticeURL.setMinimumDelta(
                this.getConfigLong("minimumLocalDelta", this.crawlQueues.noticeURL.getMinimumLocalDelta()),
                this.getConfigLong("minimumGlobalDelta", this.crawlQueues.noticeURL.getMinimumGlobalDelta()));
                
        /*
         * Creating sync objects and loading status for the crawl jobs
         * a) local crawl
         * b) remote triggered crawl
         * c) global crawl trigger
         */
        this.crawlJobsStatus.put(plasmaSwitchboardConstants.CRAWLJOB_LOCAL_CRAWL, new Object[]{
                new Object(),
                Boolean.valueOf(getConfig(plasmaSwitchboardConstants.CRAWLJOB_LOCAL_CRAWL + "_isPaused", "false"))});
        this.crawlJobsStatus.put(plasmaSwitchboardConstants.CRAWLJOB_REMOTE_TRIGGERED_CRAWL, new Object[]{
                new Object(),
                Boolean.valueOf(getConfig(plasmaSwitchboardConstants.CRAWLJOB_REMOTE_TRIGGERED_CRAWL + "_isPaused", "false"))});
        this.crawlJobsStatus.put(plasmaSwitchboardConstants.CRAWLJOB_REMOTE_CRAWL_LOADER, new Object[]{
                new Object(),
                Boolean.valueOf(getConfig(plasmaSwitchboardConstants.CRAWLJOB_REMOTE_CRAWL_LOADER + "_isPaused", "false"))});
        
        // init cookie-Monitor
        this.log.logConfig("Starting Cookie Monitor");
        this.outgoingCookies = new HashMap<String, Object[]>();
        this.incomingCookies = new HashMap<String, Object[]>();
        
        // init search history trackers
        this.localSearchTracker = new ConcurrentHashMap<String, TreeSet<Long>>(); // String:TreeSet - IP:set of Long(accessTime)
        this.remoteSearchTracker = new ConcurrentHashMap<String, TreeSet<Long>>();
        this.localSearches = new ArrayList<Query>(); // contains search result properties as HashMaps
        this.remoteSearches = new ArrayList<Query>();
        
        // init messages: clean up message symbol
        final File notifierSource = new File(getRootPath(), getConfig(plasmaSwitchboardConstants.HTROOT_PATH, plasmaSwitchboardConstants.HTROOT_PATH_DEFAULT) + "/env/grafics/empty.gif");
        final File notifierDest = new File(getConfigPath(plasmaSwitchboardConstants.HTDOCS_PATH, plasmaSwitchboardConstants.HTDOCS_PATH_DEFAULT), "notifier.gif");
        try {
            FileUtils.copy(notifierSource, notifierDest);
        } catch (final IOException e) {
        }
        
        // clean up profiles
        this.log.logConfig("Cleaning Profiles");
        try { cleanProfiles(); } catch (final InterruptedException e) { /* Ignore this here */ }
        
        // init ranking transmission
        /*
        CRDistOn       = true/false
        CRDist0Path    = GLOBAL/010_owncr
        CRDist0Method  = 1
        CRDist0Percent = 0
        CRDist0Target  =
        CRDist1Path    = GLOBAL/014_othercr/1
        CRDist1Method  = 9
        CRDist1Percent = 30
        CRDist1Target  = kaskelix.de:8080,yacy.dyndns.org:8000,suma-lab.de:8080
         **/
        rankingOn = getConfig(plasmaSwitchboardConstants.RANKING_DIST_ON, "true").equals("true") && networkName.equals("freeworld");
        rankingOwnDistribution = new plasmaRankingDistribution(log, peers, new File(rankingPath, getConfig(plasmaSwitchboardConstants.RANKING_DIST_0_PATH, plasmaRankingDistribution.CR_OWN)), (int) getConfigLong(plasmaSwitchboardConstants.RANKING_DIST_0_METHOD, plasmaRankingDistribution.METHOD_ANYSENIOR), (int) getConfigLong(plasmaSwitchboardConstants.RANKING_DIST_0_METHOD, 0), getConfig(plasmaSwitchboardConstants.RANKING_DIST_0_TARGET, ""));
        rankingOtherDistribution = new plasmaRankingDistribution(log, peers, new File(rankingPath, getConfig(plasmaSwitchboardConstants.RANKING_DIST_1_PATH, plasmaRankingDistribution.CR_OTHER)), (int) getConfigLong(plasmaSwitchboardConstants.RANKING_DIST_1_METHOD, plasmaRankingDistribution.METHOD_MIXEDSENIOR), (int) getConfigLong(plasmaSwitchboardConstants.RANKING_DIST_1_METHOD, 30), getConfig(plasmaSwitchboardConstants.RANKING_DIST_1_TARGET, "kaskelix.de:8080,yacy.dyndns.org:8000"));

        // init nameCacheNoCachingList
        serverDomains.setNoCachingPatterns(getConfig(plasmaSwitchboardConstants.HTTPC_NAME_CACHE_CACHING_PATTERNS_NO,""));
        
        // generate snippets cache
        log.logConfig("Initializing Snippet Cache");
        plasmaSnippetCache.init(parser, log, this);
        
        // init the wiki
        wikiParser = new wikiCode(this.peers.mySeed().getClusterAddress());
        
        // initializing the resourceObserver
        serverInstantBusyThread.oneTimeJob(ResourceObserver.class, "initThread", ResourceObserver.log, 0);
        
        // initializing the stackCrawlThread
        this.crawlStacker = new CrawlStacker(
                this.crawlQueues,
                this.crawler,
                this.indexSegment,
                this.peers,
                "local.any".indexOf(getConfig("network.unit.domain", "global")) >= 0,
                "global.any".indexOf(getConfig("network.unit.domain", "global")) >= 0);
        
        // initializing dht chunk generation
        this.dhtMaxReferenceCount = (int) getConfigLong(plasmaSwitchboardConstants.INDEX_DIST_CHUNK_SIZE_START, 50);
        
        // init robinson cluster
        // before we do that, we wait some time until the seed list is loaded.
        //while (((System.currentTimeMillis() - startedSeedListAquisition) < 8000) && (this.webIndex.seedDB.sizeConnected() == 0)) try {Thread.sleep(1000);} catch (final InterruptedException e) {}
        //try {Thread.sleep(1000);} catch (final InterruptedException e) {}
        this.clusterhashes = this.peers.clusterHashes(getConfig("cluster.peers.yacydomain", ""));
        
        // deploy blocking threads
        int indexerThreads = Math.max(1, serverProcessor.useCPU / 2);
        indexingStorageProcessor      = new serverProcessor<indexingQueueEntry>(
                "storeDocumentIndex",
                "This is the sequencing step of the indexing queue: no concurrency is wanted here, because the access of the indexer works better if it is not concurrent. Files are written as streams, councurrency would destroy IO performance. In this process the words are written to the RWI cache, which flushes if it is full.",
                new String[]{"RWI/Cache/Collections"},
                this, "storeDocumentIndex", serverProcessor.useCPU + 40, null, indexerThreads);
        indexingAnalysisProcessor     = new serverProcessor<indexingQueueEntry>(
                "webStructureAnalysis",
                "This just stores the link structure of the document into a web structure database.",
                new String[]{"storeDocumentIndex"},
                this, "webStructureAnalysis", serverProcessor.useCPU + 20, indexingStorageProcessor, serverProcessor.useCPU + 1);
        indexingCondensementProcessor = new serverProcessor<indexingQueueEntry>(
                "condenseDocument",
                "This does a structural analysis of plain texts: markup of headlines, slicing into phrases (i.e. sentences), markup with position, counting of words, calculation of term frequency.",
                new String[]{"webStructureAnalysis"},
                this, "condenseDocument", serverProcessor.useCPU + 10, indexingAnalysisProcessor, serverProcessor.useCPU + 1);
        indexingDocumentProcessor     = new serverProcessor<indexingQueueEntry>(
                "parseDocument",
                "This does the parsing of the newly loaded documents from the web. The result is not only a plain text document, but also a list of URLs that are embedded into the document. The urls are handed over to the CrawlStacker. This process has two child process queues!",
                new String[]{"condenseDocument", "CrawlStacker"},
                this, "parseDocument", 2 * serverProcessor.useCPU + 1, indexingCondensementProcessor, 2 * serverProcessor.useCPU + 1);
        
        // deploy busy threads
        log.logConfig("Starting Threads");
        MemoryControl.gc(10000, "plasmaSwitchboard, help for profiler"); // help for profiler - thq
        
        deployThread(plasmaSwitchboardConstants.CLEANUP, "Cleanup", "simple cleaning process for monitoring information", null,
                     new serverInstantBusyThread(this, plasmaSwitchboardConstants.CLEANUP_METHOD_START, plasmaSwitchboardConstants.CLEANUP_METHOD_JOBCOUNT, plasmaSwitchboardConstants.CLEANUP_METHOD_FREEMEM), 600000); // all 5 Minutes, wait 10 minutes until first run
        deployThread(plasmaSwitchboardConstants.INDEXER, "Indexing", "thread that either initiates a parsing/indexing queue, distributes the index into the DHT, stores parsed documents", "/IndexCreateIndexingQueue_p.html",
                     new serverInstantBusyThread(this, plasmaSwitchboardConstants.INDEXER_METHOD_START, plasmaSwitchboardConstants.INDEXER_METHOD_JOBCOUNT, plasmaSwitchboardConstants.INDEXER_METHOD_FREEMEM), 10000);
        deployThread(plasmaSwitchboardConstants.CRAWLJOB_REMOTE_TRIGGERED_CRAWL, "Remote Crawl Job", "thread that performes a single crawl/indexing step triggered by a remote peer", null,
                     new serverInstantBusyThread(crawlQueues, plasmaSwitchboardConstants.CRAWLJOB_REMOTE_TRIGGERED_CRAWL_METHOD_START, plasmaSwitchboardConstants.CRAWLJOB_REMOTE_TRIGGERED_CRAWL_METHOD_JOBCOUNT, plasmaSwitchboardConstants.CRAWLJOB_REMOTE_TRIGGERED_CRAWL_METHOD_FREEMEM), 30000);
        deployThread(plasmaSwitchboardConstants.CRAWLJOB_REMOTE_CRAWL_LOADER, "Remote Crawl URL Loader", "thread that loads remote crawl lists from other peers", "",
                     new serverInstantBusyThread(crawlQueues, plasmaSwitchboardConstants.CRAWLJOB_REMOTE_CRAWL_LOADER_METHOD_START, plasmaSwitchboardConstants.CRAWLJOB_REMOTE_CRAWL_LOADER_METHOD_JOBCOUNT, plasmaSwitchboardConstants.CRAWLJOB_REMOTE_CRAWL_LOADER_METHOD_FREEMEM), 30000); // error here?
        deployThread(plasmaSwitchboardConstants.CRAWLJOB_LOCAL_CRAWL, "Local Crawl", "thread that performes a single crawl step from the local crawl queue", "/IndexCreateWWWLocalQueue_p.html",
                     new serverInstantBusyThread(crawlQueues, plasmaSwitchboardConstants.CRAWLJOB_LOCAL_CRAWL_METHOD_START, plasmaSwitchboardConstants.CRAWLJOB_LOCAL_CRAWL_METHOD_JOBCOUNT, plasmaSwitchboardConstants.CRAWLJOB_LOCAL_CRAWL_METHOD_FREEMEM), 10000);
        deployThread(plasmaSwitchboardConstants.SEED_UPLOAD, "Seed-List Upload", "task that a principal peer performes to generate and upload a seed-list to a ftp account", null,
                     new serverInstantBusyThread(yc, plasmaSwitchboardConstants.SEED_UPLOAD_METHOD_START, plasmaSwitchboardConstants.SEED_UPLOAD_METHOD_JOBCOUNT, plasmaSwitchboardConstants.SEED_UPLOAD_METHOD_FREEMEM), 180000);
        deployThread(plasmaSwitchboardConstants.PEER_PING, "YaCy Core", "this is the p2p-control and peer-ping task", null,
                     new serverInstantBusyThread(yc, plasmaSwitchboardConstants.PEER_PING_METHOD_START, plasmaSwitchboardConstants.PEER_PING_METHOD_JOBCOUNT, plasmaSwitchboardConstants.PEER_PING_METHOD_FREEMEM), 2000);
        deployThread(plasmaSwitchboardConstants.INDEX_DIST, "DHT Distribution", "selection, transfer and deletion of index entries that are not searched on your peer, but on others", null,
            new serverInstantBusyThread(this, plasmaSwitchboardConstants.INDEX_DIST_METHOD_START, plasmaSwitchboardConstants.INDEX_DIST_METHOD_JOBCOUNT, plasmaSwitchboardConstants.INDEX_DIST_METHOD_FREEMEM), 5000,
            Long.parseLong(getConfig(plasmaSwitchboardConstants.INDEX_DIST_IDLESLEEP , "5000")),
            Long.parseLong(getConfig(plasmaSwitchboardConstants.INDEX_DIST_BUSYSLEEP , "0")),
            Long.parseLong(getConfig(plasmaSwitchboardConstants.INDEX_DIST_MEMPREREQ , "1000000")));

        // test routine for snippet fetch
        //Set query = new HashSet();
        //query.add(CrawlSwitchboardEntry.word2hash("Weitergabe"));
        //query.add(CrawlSwitchboardEntry.word2hash("Zahl"));
        //plasmaSnippetCache.result scr = snippetCache.retrieve(new URL("http://www.heise.de/mobil/newsticker/meldung/mail/54980"), query, true);
        //plasmaSnippetCache.result scr = snippetCache.retrieve(new URL("http://www.heise.de/security/news/foren/go.shtml?read=1&msg_id=7301419&forum_id=72721"), query, true);
        //plasmaSnippetCache.result scr = snippetCache.retrieve(new URL("http://www.heise.de/kiosk/archiv/ct/2003/4/20"), query, true, 260);

        this.dbImportManager = new ImporterManager();
        this.trail = new ArrayList<String>();
        
        log.logConfig("Finished Switchboard Initialization");
    }


    public void overwriteNetworkDefinition() {

        // load network configuration into settings
        String networkUnitDefinition = getConfig("network.unit.definition", "defaults/yacy.network.freeworld.unit");
        final String networkGroupDefinition = getConfig("network.group.definition", "yacy.network.group");

        // patch old values
        if (networkUnitDefinition.equals("yacy.network.unit")) {
            networkUnitDefinition = "defaults/yacy.network.freeworld.unit";
            setConfig("network.unit.definition", networkUnitDefinition);
        }
        
        // remove old release and bootstrap locations
        Iterator<String> ki = configKeys();
        ArrayList<String> d = new ArrayList<String>();
        String k;
        while (ki.hasNext()) {
            k = ki.next();
            if (k.startsWith("network.unit.update.location")) d.add(k);
            if (k.startsWith("network.unit.bootstrap")) d.add(k);
        }
        for (String s:d) this.removeConfig(s); // must be removed afterwards othervise a ki.remove() would not remove the property on file
        
        // include additional network definition properties into our settings
        // note that these properties cannot be set in the application because they are
        // _always_ overwritten each time with the default values. This is done so on purpose.
        // the network definition should be made either consistent for all peers,
        // or independently using a bootstrap URL
        Map<String, String> initProps;
        if (networkUnitDefinition.startsWith("http://")) {
            try {
            	setConfig(plasmaSwitchboard.loadHashMap(new yacyURL(networkUnitDefinition, null)));
            } catch (final MalformedURLException e) { }
        } else {
            final File networkUnitDefinitionFile = (networkUnitDefinition.startsWith("/")) ? new File(networkUnitDefinition) : new File(getRootPath(), networkUnitDefinition);
            if (networkUnitDefinitionFile.exists()) {
                initProps = FileUtils.loadMap(networkUnitDefinitionFile);
                setConfig(initProps);
            }
        }
        if (networkGroupDefinition.startsWith("http://")) {
            try {
            	setConfig(plasmaSwitchboard.loadHashMap(new yacyURL(networkGroupDefinition, null)));
            } catch (final MalformedURLException e) { }
        } else {
            final File networkGroupDefinitionFile = new File(getRootPath(), networkGroupDefinition);
            if (networkGroupDefinitionFile.exists()) {
                initProps = FileUtils.loadMap(networkGroupDefinitionFile);
                setConfig(initProps);
            }
        }

        // set release locations
        int i = 0;
        CryptoLib cryptoLib;
	try {
	    cryptoLib = new CryptoLib();
	    while (true) {
		String location = getConfig("network.unit.update.location" + i, "");
		if (location.length() == 0) break;
		yacyURL locationURL;
		try {
		    // try to parse url
		    locationURL = new yacyURL(location, null);
		} catch (final MalformedURLException e) {
		    break;
		}
		PublicKey publicKey = null;
		// get public key if it's in config
		try {
		    String publicKeyString = getConfig("network.unit.update.location" + i + ".key", null);
		    if(publicKeyString != null) {
			byte[] publicKeyBytes = Base64Order.standardCoder.decode(publicKeyString.trim(), "decode public Key");
			publicKey = cryptoLib.getPublicKeyFromBytes(publicKeyBytes);
		    }
		} catch (InvalidKeySpecException e) {
		    e.printStackTrace();
		}
		yacyUpdateLocation updateLocation = new yacyUpdateLocation(locationURL, publicKey);
		yacyRelease.latestReleaseLocations.add(updateLocation);
		i++;
	    }
	} catch (NoSuchAlgorithmException e1) {
	    // TODO Auto-generated catch block
	    e1.printStackTrace();
	}
        
        // initiate url license object
        licensedURLs = new URLLicense(8);
        
        // set white/blacklists
        this.networkWhitelist = serverDomains.makePatterns(getConfig(plasmaSwitchboardConstants.NETWORK_WHITELIST, ""));
        this.networkBlacklist = serverDomains.makePatterns(getConfig(plasmaSwitchboardConstants.NETWORK_BLACKLIST, ""));
        
        /*
        // in intranet and portal network set robinson mode
        if (networkUnitDefinition.equals("defaults/yacy.network.webportal.unit") ||
            networkUnitDefinition.equals("defaults/yacy.network.intranet.unit")) {
            // switch to robinson mode
            setConfig("crawlResponse", "false");
            setConfig(plasmaSwitchboardConstants.INDEX_DIST_ALLOW, false);
            setConfig(plasmaSwitchboardConstants.INDEX_RECEIVE_ALLOW, false);
        }
        
        // in freeworld network set full p2p mode
        if (networkUnitDefinition.equals("defaults/yacy.network.freeworld.unit")) {
            // switch to robinson mode
            setConfig("crawlResponse", "true");
            setConfig(plasmaSwitchboardConstants.INDEX_DIST_ALLOW, true);
            setConfig(plasmaSwitchboardConstants.INDEX_RECEIVE_ALLOW, true);
        }
        */
    }
    
    public void switchNetwork(final String networkDefinition) {
        // pause crawls
        final boolean lcp = crawlJobIsPaused(plasmaSwitchboardConstants.CRAWLJOB_LOCAL_CRAWL);
        if (!lcp) pauseCrawlJob(plasmaSwitchboardConstants.CRAWLJOB_LOCAL_CRAWL);
        final boolean rcp = crawlJobIsPaused(plasmaSwitchboardConstants.CRAWLJOB_REMOTE_TRIGGERED_CRAWL);
        if (!rcp) pauseCrawlJob(plasmaSwitchboardConstants.CRAWLJOB_REMOTE_TRIGGERED_CRAWL);
        // trigger online caution
        proxyLastAccess = System.currentTimeMillis() + 10000; // at least 10 seconds online caution to prevent unnecessary action on database meanwhile
        // clean search events which have cached relations to the old index
        plasmaSearchEvent.cleanupEvents(true);
        // switch the networks
        synchronized (this) {
            // shut down
            synchronized (this.indexSegment) {
                this.indexSegment.close();
            }
            this.crawlStacker.announceClose();
            this.crawlStacker.close();
            
            // start up
            setConfig("network.unit.definition", networkDefinition);
            overwriteNetworkDefinition();
            final File indexPrimaryPath = getConfigPath(plasmaSwitchboardConstants.INDEX_PRIMARY_PATH, plasmaSwitchboardConstants.INDEX_PATH_DEFAULT);
            final int wordCacheMaxCount = (int) getConfigLong(plasmaSwitchboardConstants.WORDCACHE_MAX_COUNT, 20000);
            final long fileSizeMax = (serverSystem.isWindows) ? sb.getConfigLong("filesize.max.win", (long) Integer.MAX_VALUE) : sb.getConfigLong("filesize.max.other", (long) Integer.MAX_VALUE);
            final int redundancy = (int) sb.getConfigLong("network.unit.dhtredundancy.senior", 1);
            final int partitionExponent = (int) sb.getConfigLong("network.unit.dht.partitionExponent", 0);
            try {
                String networkName = getConfig(plasmaSwitchboardConstants.NETWORK_NAME, "");
                final File networkRoot = new File(new File(indexPrimaryPath, networkName), "NETWORK");
	            networkRoot.mkdirs();
	            final File mySeedFile = new File(networkRoot, yacySeedDB.DBFILE_OWN_SEED);
	            peers = new yacySeedDB(
	                    networkRoot,
	                    "seed.new.heap",
	                    "seed.old.heap",
	                    "seed.pot.heap",
	                    mySeedFile,
	                    redundancy,
	                    partitionExponent);
	            indexSegment = new Segment(
	                    log,
	                    new File(new File(indexPrimaryPath, networkName), "TEXT"),
	                    wordCacheMaxCount,
	                    fileSizeMax);
	            crawler = new CrawlSwitchboard(
	                    peers,
	                    networkName,
	                    log,
	                    new File(new File(indexPrimaryPath, networkName), "QUEUES"));
			} catch (IOException e) {
				e.printStackTrace();
				this.indexSegment = null;
			}
            // we need a new stacker, because this uses network-specific attributes to sort out urls (local, global)
            this.crawlStacker = new CrawlStacker(
                    this.crawlQueues,
                    this.crawler,
                    this.indexSegment,
                    this.peers,
                    "local.any".indexOf(getConfig("network.unit.domain", "global")) >= 0,
                    "global.any".indexOf(getConfig("network.unit.domain", "global")) >= 0);
        }
        // start up crawl jobs
        continueCrawlJob(plasmaSwitchboardConstants.CRAWLJOB_LOCAL_CRAWL);
        continueCrawlJob(plasmaSwitchboardConstants.CRAWLJOB_REMOTE_TRIGGERED_CRAWL);
        this.log.logInfo("switched network to " + networkDefinition);
        // check status of account configuration: when local url crawling is allowed, it is not allowed
        // that an automatic authorization of localhost is done, because in this case crawls from local
        // addresses are blocked to prevent attack szenarios where remote pages contain links to localhost
        // addresses that can steer a YaCy peer
        if ((crawlStacker.acceptLocalURLs()) && (getConfigBool("adminAccountForLocalhost", false))) {
            setConfig("adminAccountForLocalhost", false);
            if (getConfig(httpd.ADMIN_ACCOUNT_B64MD5, "").startsWith("0000")) {
                // the password was set automatically with a random value.
                // We must remove that here to prevent that a user cannot log in any more
                setConfig(httpd.ADMIN_ACCOUNT_B64MD5, "");
                // after this a message must be generated to alert the user to set a new password
                log.logInfo("RANDOM PASSWORD REMOVED! User must set a new password");
            }
        }
        // set the network-specific remote crawl ppm
        setRemotecrawlPPM(Math.max(1, (int) getConfigLong("network.unit.remotecrawl.speed", 60)));
    }
    
    public void setRemotecrawlPPM(int ppm) {
        setConfig(plasmaSwitchboardConstants.CRAWLJOB_REMOTE_TRIGGERED_CRAWL_BUSYSLEEP, 60000 / ppm);
        setConfig(plasmaSwitchboardConstants.CRAWLJOB_REMOTE_TRIGGERED_CRAWL_IDLESLEEP, Math.max(10000, 180000 / ppm));
        setConfig(plasmaSwitchboardConstants.CRAWLJOB_REMOTE_CRAWL_LOADER_BUSYSLEEP, Math.max(15000, 1800000 / ppm));
        setConfig(plasmaSwitchboardConstants.CRAWLJOB_REMOTE_CRAWL_LOADER_IDLESLEEP, Math.max(30000, 3600000 / ppm));
    }
    
    public void initMessages() throws IOException {
        this.log.logConfig("Starting Message Board");
        final File messageDbFileOld = new File(workPath, "message.db");
        final File messageDbFile = new File(workPath, "message.heap");
        this.messageDB = new messageBoard(messageDbFileOld, messageDbFile);
        this.log.logConfig("Loaded Message Board DB from file " + messageDbFile.getName() +
        ", " + this.messageDB.size() + " entries" +
        ", " + ppRamString(messageDbFile.length()/1024));
    }
    
    public void initWiki() throws IOException {
        this.log.logConfig("Starting Wiki Board");
        final File wikiDbFileOld = new File(workPath, "wiki.db");
        final File wikiDbFile = new File(workPath, "wiki.heap");
        this.wikiDB = new wikiBoard(wikiDbFileOld, wikiDbFile, new File(workPath, "wiki-bkp.db"), new File(workPath, "wiki-bkp.heap"));
        this.log.logConfig("Loaded Wiki Board DB from file " + wikiDbFile.getName() +
        ", " + this.wikiDB.size() + " entries" +
        ", " + ppRamString(wikiDbFile.length()/1024));
    }
    
    public void initBlog() throws IOException {
        this.log.logConfig("Starting Blog");
        final File blogDbFileOld = new File(workPath, "blog.db");
        final File blogDbFile = new File(workPath, "blog.heap");
        this.blogDB = new blogBoard(blogDbFileOld, blogDbFile);
        this.log.logConfig("Loaded Blog DB from file " + blogDbFile.getName() +
        ", " + this.blogDB.size() + " entries" +
        ", " + ppRamString(blogDbFile.length()/1024));

        final File blogCommentDbFileOld = new File(workPath, "blogComment.db");
        final File blogCommentDbFile = new File(workPath, "blogComment.heap");
        this.blogCommentDB = new blogBoardComments(blogCommentDbFileOld, blogCommentDbFile);
        this.log.logConfig("Loaded Blog-Comment DB from file " + blogCommentDbFile.getName() +
        ", " + this.blogCommentDB.size() + " entries" +
        ", " + ppRamString(blogCommentDbFile.length()/1024));
    }
    
    public void initBookmarks() throws IOException{
        this.log.logConfig("Loading Bookmarks DB");
        final File bookmarksFileOld = new File(workPath, "bookmarks.db");
        final File tagsFileOld = new File(workPath, "bookmarkTags.db");
        final File datesFileOld = new File(workPath, "bookmarkDates.db");
        final File bookmarksFile = new File(workPath, "bookmarks.heap");
        final File tagsFile = new File(workPath, "bookmarkTags.heap");
        final File datesFile = new File(workPath, "bookmarkDates.heap");
        this.bookmarksDB = new bookmarksDB(
                bookmarksFileOld, bookmarksFile,
                tagsFileOld, tagsFile,
                datesFileOld, datesFile);
        this.log.logConfig("Loaded Bookmarks DB from files "+ bookmarksFile.getName()+ ", "+tagsFile.getName());
        this.log.logConfig(this.bookmarksDB.tagsSize()+" Tag, "+this.bookmarksDB.bookmarksSize()+" Bookmarks");
    }
    
    public static plasmaSwitchboard getSwitchboard(){
        return sb;
    }

    public boolean isRobinsonMode() {
    	// we are in robinson mode, if we do not exchange index by dht distribution
    	// we need to take care that search requests and remote indexing requests go only
    	// to the peers in the same cluster, if we run a robinson cluster.
    	return !getConfigBool(plasmaSwitchboardConstants.INDEX_DIST_ALLOW, false) && !getConfigBool(plasmaSwitchboardConstants.INDEX_RECEIVE_ALLOW, false);
    }

    public boolean isPublicRobinson() {
    	// robinson peers may be member of robinson clusters, which can be public or private
    	// this does not check the robinson attribute, only the specific subtype of the cluster
    	final String clustermode = getConfig(plasmaSwitchboardConstants.CLUSTER_MODE, plasmaSwitchboardConstants.CLUSTER_MODE_PUBLIC_PEER);
    	return (clustermode.equals(plasmaSwitchboardConstants.CLUSTER_MODE_PUBLIC_CLUSTER)) || (clustermode.equals(plasmaSwitchboardConstants.CLUSTER_MODE_PUBLIC_PEER));
    }
    
    public boolean isInMyCluster(final String peer) {
    	// check if the given peer is in the own network, if this is a robinson cluster
    	// depending on the robinson cluster type, the peer String may be a peerhash (b64-hash)
    	// or a ip:port String or simply a ip String
    	// if this robinson mode does not define a cluster membership, false is returned
        if (peer == null) return false;
    	if (!isRobinsonMode()) return false;
    	final String clustermode = getConfig(plasmaSwitchboardConstants.CLUSTER_MODE, plasmaSwitchboardConstants.CLUSTER_MODE_PUBLIC_PEER);
    	if (clustermode.equals(plasmaSwitchboardConstants.CLUSTER_MODE_PRIVATE_CLUSTER)) {
    		// check if we got the request from a peer in the private cluster
    		final String network = getConfig(plasmaSwitchboardConstants.CLUSTER_PEERS_IPPORT, "");
            return network.indexOf(peer) >= 0;
    	} else if (clustermode.equals(plasmaSwitchboardConstants.CLUSTER_MODE_PUBLIC_CLUSTER)) {
    		// check if we got the request from a peer in the public cluster
            return this.clusterhashes.containsKey(peer.getBytes());
    	} else {
    		return false;
    	}
    }
    
    public boolean isInMyCluster(final yacySeed seed) {
    	// check if the given peer is in the own network, if this is a robinson cluster
    	// if this robinson mode does not define a cluster membership, false is returned
    	if (seed == null) return false;
		if (!isRobinsonMode()) return false;
    	final String clustermode = getConfig(plasmaSwitchboardConstants.CLUSTER_MODE, plasmaSwitchboardConstants.CLUSTER_MODE_PUBLIC_PEER);
    	if (clustermode.equals(plasmaSwitchboardConstants.CLUSTER_MODE_PRIVATE_CLUSTER)) {
    		// check if we got the request from a peer in the private cluster
    		final String network = getConfig(plasmaSwitchboardConstants.CLUSTER_PEERS_IPPORT, "");
            return network.indexOf(seed.getPublicAddress()) >= 0;
    	} else if (clustermode.equals(plasmaSwitchboardConstants.CLUSTER_MODE_PUBLIC_CLUSTER)) {
    	    // check if we got the request from a peer in the public cluster
            return this.clusterhashes.containsKey(seed.hash.getBytes());
    	} else {
    		return false;
    	}
    }

    public String urlExists(final String hash) {
        // tests if hash occurrs in any database
        // if it exists, the name of the database is returned,
        // if it not exists, null is returned
        if (indexSegment.urlMetadata().exists(hash)) return "loaded";
        return this.crawlQueues.urlExists(hash);
    }
    
    public void urlRemove(final String hash) {
        indexSegment.urlMetadata().remove(hash);
        crawlResults.remove(hash);
        crawlQueues.urlRemove(hash);
    }
    
    public yacyURL getURL(final String urlhash) {
        if (urlhash == null) return null;
        if (urlhash.length() == 0) return null;
        final yacyURL ne = crawlQueues.getURL(urlhash);
        if (ne != null) return ne;
        final URLMetadataRow le = indexSegment.urlMetadata().load(urlhash, null, 0);
        if (le != null) return le.metadata().url();
        return null;
    }
    
    public RankingProfile getRanking() {
        return (getConfig("rankingProfile", "").length() == 0) ?
                  new RankingProfile(Query.CONTENTDOM_TEXT) :
                  new RankingProfile("", crypt.simpleDecode(sb.getConfig("rankingProfile", ""), null));
    }
    
    public boolean onlineCaution() {
        return
           (System.currentTimeMillis() - this.proxyLastAccess < Integer.parseInt(getConfig(plasmaSwitchboardConstants.PROXY_ONLINE_CAUTION_DELAY, "30000"))) ||
           (System.currentTimeMillis() - this.localSearchLastAccess < Integer.parseInt(getConfig(plasmaSwitchboardConstants.LOCALSEACH_ONLINE_CAUTION_DELAY, "30000"))) ||
           (System.currentTimeMillis() - this.remoteSearchLastAccess < Integer.parseInt(getConfig(plasmaSwitchboardConstants.REMOTESEARCH_ONLINE_CAUTION_DELAY, "30000")));
    }
    
    private static String ppRamString(long bytes) {
        if (bytes < 1024) return bytes + " KByte";
        bytes = bytes / 1024;
        if (bytes < 1024) return bytes + " MByte";
        bytes = bytes / 1024;
        if (bytes < 1024) return bytes + " GByte";
        return (bytes / 1024) + "TByte";
    }

    /**
     * {@link CrawlProfile Crawl Profiles} are saved independantly from the queues themselves
     * and therefore have to be cleaned up from time to time. This method only performs the clean-up
     * if - and only if - the {@link IndexingStack switchboard},
     * {@link ProtocolLoader loader} and {@link plasmaCrawlNURL local crawl} queues are all empty.
     * <p>
     *   Then it iterates through all existing {@link CrawlProfile crawl profiles} and removes
     *   all profiles which are not hardcoded.
     * </p>
     * <p>
     *   <i>If this method encounters DB-failures, the profile DB will be resetted and</i>
     *   <code>true</code><i> will be returned</i>
     * </p>
     * @see #CRAWL_PROFILE_PROXY hardcoded
     * @see #CRAWL_PROFILE_REMOTE hardcoded
     * @see #CRAWL_PROFILE_SNIPPET_TEXT hardcoded
     * @see #CRAWL_PROFILE_SNIPPET_MEDIA hardcoded
     * @return whether this method has done something or not (i.e. because the queues have been filled
     * or there are no profiles left to clean up)
     * @throws <b>InterruptedException</b> if the current thread has been interrupted, i.e. by the
     * shutdown procedure
     */
    public boolean cleanProfiles() throws InterruptedException {
        if ((crawlQueues.size() > 0) ||
            (crawlStacker != null && crawlStacker.size() > 0) ||
            (crawlQueues.noticeURL.notEmpty())) 
            return false;
        return this.crawler.cleanProfiles();
    }
    
    public boolean htEntryStoreProcess(final Document entry) {
        
        if (entry == null) return false;

        /* =========================================================================
         * PARSER SUPPORT
         * 
         * Testing if the content type is supported by the available parsers
         * ========================================================================= */
        final boolean isSupportedContent = plasmaParser.supportedContent(entry.url(),entry.getMimeType());
        if (log.isFinest()) log.logFinest("STORE "+ entry.url() +" content of type "+ entry.getMimeType() +" is supported: "+ isSupportedContent);
        
        /* =========================================================================
         * INDEX CONTROL HEADER
         * 
         * With the X-YACY-Index-Control header set to "no-index" a client could disallow
         * yacy to index the response returned as answer to a request
         * ========================================================================= */
        boolean doIndexing = true;        
        if (entry.requestProhibitsIndexing()) {        
            doIndexing = false;
            if (this.log.isFine()) this.log.logFine("Crawling of " + entry.url() + " prohibited by request.");
        }        
        
        /* =========================================================================
         * LOCAL IP ADDRESS CHECK
         * 
         * check if ip is local ip address // TODO: remove this procotol specific code here
         * ========================================================================= */
        final String urlRejectReason = crawlStacker.urlInAcceptedDomain(entry.url());
        if (urlRejectReason != null) {
            if (this.log.isFine()) this.log.logFine("Rejected URL '" + entry.url() + "': " + urlRejectReason);
            doIndexing = false;
        }
        
        synchronized (crawler.queuePreStack) {
        /* =========================================================================
         * STORING DATA
         * 
         * Now we store the response header and response content if 
         * a) the user has configured to use the htcache or
         * b) the content should be indexed
         * ========================================================================= */        
        if (((entry.profile() != null) && (entry.profile().storeHTCache())) || (doIndexing && isSupportedContent)) {
            // store response header
            /*
            if (entry.writeResourceInfo()) {
                this.log.logInfo("WROTE HEADER for " + entry.cacheFile());
            }
            */
            
            // work off unwritten files
            if (entry.cacheArray() != null) {
                final String error = (entry.initiator() == null) ? entry.shallStoreCacheForProxy() : null;
                if (error == null) {
                    plasmaHTCache.storeFile(entry.url(), entry.cacheArray());
                    if (this.log.isFine()) this.log.logFine("WROTE FILE (" + entry.cacheArray().length + " bytes) for " + entry.url());
                } else {
                    if (this.log.isWarning()) this.log.logWarning("WRITE OF FILE " + entry.url() + " FORBIDDEN: " + error);
                }
            //} else {
                //this.log.logFine("EXISTING FILE (" + entry.cacheFile.length() + " bytes) for " + entry.cacheFile);
            }
        }
        
        /* =========================================================================
         * INDEXING
         * ========================================================================= */          
        if (doIndexing && isSupportedContent) {
            
            // enqueue for further crawling
            enQueue(this.crawler.queuePreStack.newEntry(
                    entry.url(), 
                    (entry.referrerURL() == null) ? null : entry.referrerURL().hash(),
                    entry.ifModifiedSince(), 
                    entry.requestWithCookie(),
                    entry.initiator(), 
                    entry.depth(), 
                    entry.profile().handle(),
                    entry.name()
            ));
        } else {
            if (!entry.profile().storeHTCache()) {
                try {
                    plasmaHTCache.deleteFromCache(entry.url());
                } catch (IOException e) {
                    e.printStackTrace();
                }                
            }
        }
        }
        
        return true;
    }
    
    public void close() {
        log.logConfig("SWITCHBOARD SHUTDOWN STEP 1: sending termination signal to managed threads:");
        serverProfiling.stopSystemProfiling();
        terminateAllThreads(true);
        log.logConfig("SWITCHBOARD SHUTDOWN STEP 2: sending termination signal to threaded indexing");
        // closing all still running db importer jobs
        dhtDispatcher.close();
        indexingDocumentProcessor.announceShutdown();
        indexingDocumentProcessor.awaitShutdown(12000);
        crawlStacker.announceClose();
        indexingCondensementProcessor.announceShutdown();
        indexingAnalysisProcessor.announceShutdown();
        indexingStorageProcessor.announceShutdown();
        indexingCondensementProcessor.awaitShutdown(12000);
        indexingAnalysisProcessor.awaitShutdown(12000);
        indexingStorageProcessor.awaitShutdown(12000);
        crawlStacker.close();
        this.dbImportManager.close();
        httpClient.closeAllConnections();
        wikiDB.close();
        blogDB.close();
        blogCommentDB.close();
        userDB.close();
        bookmarksDB.close();
        messageDB.close();
        robots.close();
        parser.close();
        webStructure.flushCitationReference("crg");
        webStructure.close();
        crawlQueues.close();
        crawler.close();
        log.logConfig("SWITCHBOARD SHUTDOWN STEP 3: sending termination signal to database manager (stand by...)");
        indexSegment.close();
        peers.close();
        plasmaHTCache.close();
        UPnP.deletePortMapping();
        Tray.removeTray();
        log.logConfig("SWITCHBOARD SHUTDOWN TERMINATED");
    }
    
    public int queueSize() {
        return crawler.queuePreStack.size();
    }
    
    public void enQueue(final IndexingStack.QueueEntry job) {
        assert job != null;
        try {
            crawler.queuePreStack.push(job);
        } catch (final IOException e) {
            log.logSevere("IOError in plasmaSwitchboard.enQueue: " + e.getMessage(), e);
        }
    }
    
    public void deQueueFreeMem() {
        // empty some caches
        indexSegment.urlMetadata().clearCache();
        plasmaSearchEvent.cleanupEvents(true);
    }
    
    public IndexingStack.QueueEntry deQueue() {
        // getting the next entry from the indexing queue
        IndexingStack.QueueEntry nextentry = null;
        synchronized (crawler.queuePreStack) {
            // do one processing step
            if (this.log.isFine()) log.logFine("DEQUEUE: sbQueueSize=" + crawler.queuePreStack.size() +
                    ", coreStackSize=" + crawlQueues.noticeURL.stackSize(NoticedURL.STACK_TYPE_CORE) +
                    ", limitStackSize=" + crawlQueues.noticeURL.stackSize(NoticedURL.STACK_TYPE_LIMIT) +
                    ", overhangStackSize=" + crawlQueues.noticeURL.stackSize(NoticedURL.STACK_TYPE_OVERHANG) +
                    ", remoteStackSize=" + crawlQueues.noticeURL.stackSize(NoticedURL.STACK_TYPE_REMOTE));
            try {
                final int sizeBefore = crawler.queuePreStack.size();
                if (sizeBefore == 0) return null;
                nextentry = crawler.queuePreStack.pop();
                if (nextentry == null) {
                    log.logWarning("deQueue: null entry on queue stack.");
                    if (crawler.queuePreStack.size() == sizeBefore) {
                        // this is a severe problem: because this time a null is returned, it means that this status will last forever
                        // to re-enable use of the sbQueue, it must be emptied completely
                        log.logSevere("deQueue: does not shrink after pop() == null. Emergency reset of " + crawler.queuePreStack.file());
                        crawler.queuePreStack.clear();
                    }
                    return null;
                }
            } catch (final IOException e) {
                log.logSevere("IOError in plasmaSwitchboard.deQueue: " + e.getMessage(), e);
                return null;
            }
            return nextentry;
        }
    }
    
    public boolean processSurrogate(String s) {
        File surrogateFile = new File(this.surrogatesInPath, s);
        File outfile = new File(this.surrogatesOutPath, s);
        if (!surrogateFile.exists() || !surrogateFile.canWrite() || !surrogateFile.canRead()) return false;
        if (outfile.exists()) return false;
        boolean moved = false;
        try {
            SurrogateReader reader = new SurrogateReader(new BufferedInputStream(new FileInputStream(surrogateFile)), 3);
            Thread readerThread = new Thread(reader, "Surrogate-Reader " + surrogateFile.getAbsolutePath());
            readerThread.start();
            DCEntry surrogate;
            QueueEntry queueentry;
            while ((surrogate = reader.take()) != DCEntry.poison) {
                // check if url is in accepted domain
                final String urlRejectReason = crawlStacker.urlInAcceptedDomain(surrogate.url());
                if (urlRejectReason != null) {
                    if (this.log.isFine()) this.log.logInfo("Rejected URL '" + surrogate.url() + "': " + urlRejectReason);
                    continue;
                }
                
                // create a queue entry
                plasmaParserDocument document = surrogate.document();
                queueentry = this.crawler.queuePreStack.newEntry(surrogate.url(), null, null, false, null, 0, this.crawler.defaultSurrogateProfile.handle(), null);
                /*
                 * public QueueEntry newEntry(final yacyURL url, final String referrer, final Date ifModifiedSince, final boolean requestWithCookie,
                     final String initiator, final int depth, final String profilehandle, final String anchorName) 
                 */
                indexingQueueEntry queueEntry = new indexingQueueEntry(queueentry, document, null);
                
                // place the queue entry into the concurrent process of the condenser (document analysis)
                try {
                    indexingCondensementProcessor.enQueue(queueEntry);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                    break;
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            moved = surrogateFile.renameTo(outfile);
        }
        return moved;
    }
    
    public boolean deQueueProcess() {
        try {
            // work off fresh entries from the proxy or from the crawler
            if (onlineCaution()) {
                if (this.log.isFine()) log.logFine("deQueue: online caution, omitting resource stack processing");
                return false;
            }
            
            boolean doneSomething = false;

            // check for interruption
            checkInterruption();
            
            // check surrogates
            String[] surrogatelist = this.surrogatesInPath.list();
            if (surrogatelist.length > 0) {
                // look if the is any xml inside
                for (int i = 0; i < surrogatelist.length; i++) {
                    if (surrogatelist[i].endsWith(".xml")) {
                        // read the surrogate file and store entry in index
                        if (processSurrogate(surrogatelist[i])) return true;
                    }
                }
            }

            // getting the next entry from the indexing queue
            if (crawler.queuePreStack.size() == 0) {
                //log.logFine("deQueue: nothing to do, queue is emtpy");
                return doneSomething; // nothing to do
            }

            // if we were interrupted we should return now
            if (Thread.currentThread().isInterrupted()) {
                if (this.log.isFine()) log.logFine("deQueue: thread was interrupted");
                return false;
            }
            
            // get next queue entry and start a queue processing
            final IndexingStack.QueueEntry queueEntry = deQueue();
            if (queueEntry == null) return true;
            if (queueEntry.profile() == null) {
                queueEntry.close();
                return true;
            }
            
            // check if the document should be indexed
            String noIndexReason = "unspecified indexing error";
            if (queueEntry.processCase() == plasmaSwitchboardConstants.PROCESSCASE_4_PROXY_LOAD) {
                // proxy-load
                noIndexReason = queueEntry.shallIndexCacheForProxy();
            } else {
                // normal crawling
                noIndexReason = queueEntry.shallIndexCacheForCrawler();
            }
            
            if (noIndexReason != null) {
                // this document should not be indexed. log cause and close queue
                final yacyURL referrerURL = queueEntry.referrerURL(this.indexSegment.urlMetadata());
                log.logFine("Not indexed any word in URL " + queueEntry.url() + "; cause: " + noIndexReason);
                addURLtoErrorDB(queueEntry.url(), (referrerURL == null) ? "" : referrerURL.hash(), queueEntry.initiator(), queueEntry.anchorName(), noIndexReason);
                // finish this entry
                return true;
            }
            
            // put document into the concurrent processing queue            
            crawler.queuePreStack.enQueueToActive(queueEntry);
            
            // check for interruption
            checkInterruption();

            // enqueue to indexing queue
            this.indexingDocumentProcessor.enQueue(new indexingQueueEntry(queueEntry, null, null));
            return true;
        } catch (final InterruptedException e) {
            log.logInfo("DEQUEUE: Shutdown detected.");
            return false;
        }
    }
    
    public static class indexingQueueEntry extends serverProcessorJob {
        public IndexingStack.QueueEntry queueEntry;
        public plasmaParserDocument document;
        public Condenser condenser;
        public indexingQueueEntry(
                final IndexingStack.QueueEntry queueEntry,
                final plasmaParserDocument document,
                final Condenser condenser) {
            super();
            this.queueEntry = queueEntry;
            this.document = document;
            this.condenser = condenser;
        }
    }
    
    public int cleanupJobSize() {
        int c = 0;
        if ((crawlQueues.delegatedURL.stackSize() > 1000)) c++;
        if ((crawlQueues.errorURL.stackSize() > 1000)) c++;
        for (int i = 1; i <= 6; i++) {
            if (crawlResults.getStackSize(i) > 1000) c++;
        }
        return c;
    }
    
    public boolean cleanupJob() {
        try {
            boolean hasDoneSomething = false;
            
            // clear caches if necessary
            if (!MemoryControl.request(8000000L, false)) {
                indexSegment.urlMetadata().clearCache();
                plasmaSearchEvent.cleanupEvents(true);
            }
            
            // set a random password if no password is configured
            if (!crawlStacker.acceptLocalURLs() && getConfigBool("adminAccountForLocalhost", false) && getConfig(httpd.ADMIN_ACCOUNT_B64MD5, "").length() == 0) {
                // make a 'random' password
                setConfig(httpd.ADMIN_ACCOUNT_B64MD5, "0000" + Digest.encodeMD5Hex(System.getProperties().toString() + System.currentTimeMillis()));
                setConfig("adminAccount", "");
            }
            
            // refresh recrawl dates
            try{
            	Iterator<CrawlProfile.entry> it = crawler.profilesActiveCrawls.profiles(true);
                entry selentry;
                while (it.hasNext()) {
                    selentry = it.next();
                    if (selentry.name().equals(CrawlSwitchboard.CRAWL_PROFILE_PROXY))
                    	crawler.profilesActiveCrawls.changeEntry(selentry, CrawlProfile.entry.RECRAWL_IF_OLDER,
                    			Long.toString(crawler.profilesActiveCrawls.getRecrawlDate(CrawlSwitchboard.CRAWL_PROFILE_PROXY_RECRAWL_CYCLE)));
                    // if (selentry.name().equals(CrawlSwitchboard.CRAWL_PROFILE_REMOTE));
                    if (selentry.name().equals(CrawlSwitchboard.CRAWL_PROFILE_SNIPPET_LOCAL_TEXT))
                    	crawler.profilesActiveCrawls.changeEntry(selentry, CrawlProfile.entry.RECRAWL_IF_OLDER,
                    			Long.toString(crawler.profilesActiveCrawls.getRecrawlDate(CrawlSwitchboard.CRAWL_PROFILE_SNIPPET_LOCAL_TEXT_RECRAWL_CYCLE)));
                    if (selentry.name().equals(CrawlSwitchboard.CRAWL_PROFILE_SNIPPET_GLOBAL_TEXT))
                    	crawler.profilesActiveCrawls.changeEntry(selentry, CrawlProfile.entry.RECRAWL_IF_OLDER,
                    			Long.toString(crawler.profilesActiveCrawls.getRecrawlDate(CrawlSwitchboard.CRAWL_PROFILE_SNIPPET_GLOBAL_TEXT_RECRAWL_CYCLE)));
                    if (selentry.name().equals(CrawlSwitchboard.CRAWL_PROFILE_SNIPPET_LOCAL_MEDIA))
                    	crawler.profilesActiveCrawls.changeEntry(selentry, CrawlProfile.entry.RECRAWL_IF_OLDER,
                    			Long.toString(crawler.profilesActiveCrawls.getRecrawlDate(CrawlSwitchboard.CRAWL_PROFILE_SNIPPET_LOCAL_MEDIA_RECRAWL_CYCLE)));
                    if (selentry.name().equals(CrawlSwitchboard.CRAWL_PROFILE_SNIPPET_GLOBAL_MEDIA))
                    	crawler.profilesActiveCrawls.changeEntry(selentry, CrawlProfile.entry.RECRAWL_IF_OLDER,
                    			Long.toString(crawler.profilesActiveCrawls.getRecrawlDate(CrawlSwitchboard.CRAWL_PROFILE_SNIPPET_GLOBAL_MEDIA_RECRAWL_CYCLE)));
                    if (selentry.name().equals(CrawlSwitchboard.CRAWL_PROFILE_SURROGATE))
                        crawler.profilesActiveCrawls.changeEntry(selentry, CrawlProfile.entry.RECRAWL_IF_OLDER,
                                Long.toString(crawler.profilesActiveCrawls.getRecrawlDate(CrawlSwitchboard.CRAWL_PROFILE_SURROGATE_RECRAWL_CYCLE)));
                }
            } catch (final IOException e) {};
            
            // close unused connections
            httpClient.cleanup();
            
            // do transmission of CR-files
            checkInterruption();
            int count = rankingOwnDistribution.size() / 100;
            if (count == 0) count = 1;
            if (count > 5) count = 5;
            if (rankingOn && !isRobinsonMode()) {
                rankingOwnDistribution.transferRanking(count);
                rankingOtherDistribution.transferRanking(1);
            }
            
            // clean up delegated stack
            checkInterruption();
            if ((crawlQueues.delegatedURL.stackSize() > 1000)) {
                if (this.log.isFine()) log.logFine("Cleaning Delegated-URLs report stack, " + crawlQueues.delegatedURL.stackSize() + " entries on stack");
                crawlQueues.delegatedURL.clearStack();
                hasDoneSomething = true;
            }
            
            // clean up error stack
            checkInterruption();
            if ((crawlQueues.errorURL.stackSize() > 1000)) {
                if (this.log.isFine()) log.logFine("Cleaning Error-URLs report stack, " + crawlQueues.errorURL.stackSize() + " entries on stack");
                crawlQueues.errorURL.clearStack();
                hasDoneSomething = true;
            }
            
            // clean up loadedURL stack
            for (int i = 1; i <= 6; i++) {
                checkInterruption();
                if (crawlResults.getStackSize(i) > 1000) {
                    if (this.log.isFine()) log.logFine("Cleaning Loaded-URLs report stack, " + crawlResults.getStackSize(i) + " entries on stack " + i);
                    crawlResults.clearStack(i);
                    hasDoneSomething = true;
                }
            }
            // clean up image stack
            ResultImages.clearQueues();
            
            // clean up profiles
            checkInterruption();
            if (cleanProfiles()) hasDoneSomething = true;

            // clean up news
            checkInterruption();
            try {                
                if (this.log.isFine()) log.logFine("Cleaning Incoming News, " + this.peers.newsPool.size(yacyNewsPool.INCOMING_DB) + " entries on stack");
                if (this.peers.newsPool.automaticProcess(peers) > 0) hasDoneSomething = true;
            } catch (final IOException e) {}
            if (getConfigBool("cleanup.deletionProcessedNews", true)) {
                this.peers.newsPool.clear(yacyNewsPool.PROCESSED_DB);
            }
            if (getConfigBool("cleanup.deletionPublishedNews", true)) {
                this.peers.newsPool.clear(yacyNewsPool.PUBLISHED_DB);
            }
            
            // clean up seed-dbs
            if(getConfigBool("routing.deleteOldSeeds.permission",true)) {
            	final long deleteOldSeedsTime = getConfigLong("routing.deleteOldSeeds.time",7)*24*3600000;
                Iterator<yacySeed> e = this.peers.seedsSortedDisconnected(true,yacySeed.LASTSEEN);
                yacySeed seed = null;
                final ArrayList<String> deleteQueue = new ArrayList<String>();
                checkInterruption();
                //clean passive seeds
                while(e.hasNext()) {
                	seed = e.next();
                	if(seed != null) {
                		//list is sorted -> break when peers are too young to delete
                		if(seed.getLastSeenUTC() > (System.currentTimeMillis()-deleteOldSeedsTime))
                				break;
                		deleteQueue.add(seed.hash);
                	}
                }
                for(int i=0;i<deleteQueue.size();++i) this.peers.removeDisconnected(deleteQueue.get(i));
                deleteQueue.clear();
                e = this.peers.seedsSortedPotential(true,yacySeed.LASTSEEN);
                checkInterruption();
                //clean potential seeds
                while(e.hasNext()) {
                	seed = e.next();
                	if(seed != null) {
                		//list is sorted -> break when peers are too young to delete
                		if(seed.getLastSeenUTC() > (System.currentTimeMillis()-deleteOldSeedsTime))
                				break;
                		deleteQueue.add(seed.hash);
                	}
                }
                for (int i = 0; i < deleteQueue.size(); ++i) this.peers.removePotential(deleteQueue.get(i));
            }
            
            // check if update is available and
            // if auto-update is activated perform an automatic installation and restart
            final yacyRelease updateVersion = yacyRelease.rulebasedUpdateInfo(false);
            if (updateVersion != null) {
                // there is a version that is more recent. Load it and re-start with it
                log.logInfo("AUTO-UPDATE: downloading more recent release " + updateVersion.getUrl());
                final File downloaded = updateVersion.downloadRelease();
                final boolean devenvironment = yacyVersion.combined2prettyVersion(sb.getConfig("version","0.1")).startsWith("dev");
                if (devenvironment) {
                    log.logInfo("AUTO-UPDATE: omiting update because this is a development environment");
                } else if ((downloaded == null) || (!downloaded.exists()) || (downloaded.length() == 0)) {
                    log.logInfo("AUTO-UPDATE: omiting update because download failed (file cannot be found, is too small or signature is bad)");
                } else {
                    yacyRelease.deployRelease(downloaded);
                    terminate(5000);
                    log.logInfo("AUTO-UPDATE: deploy and restart initiated");
                }
            }
            
            // initiate broadcast about peer startup to spread supporter url
            if (this.peers.newsPool.size(yacyNewsPool.OUTGOING_DB) == 0) {
                // read profile
                final Properties profile = new Properties();
                FileInputStream fileIn = null;
                try {
                    fileIn = new FileInputStream(new File("DATA/SETTINGS/profile.txt"));
                    profile.load(fileIn);
                } catch(final IOException e) {
                } finally {
                    if (fileIn != null) try { fileIn.close(); } catch (final Exception e) {}
                }
                final String homepage = (String) profile.get("homepage");
                if ((homepage != null) && (homepage.length() > 10)) {
                    final Properties news = new Properties();
                    news.put("homepage", profile.get("homepage"));
                    this.peers.newsPool.publishMyNews(yacyNewsRecord.newRecord(peers.mySeed(), yacyNewsPool.CATEGORY_PROFILE_BROADCAST, news));
                }
            }
            
            // update the cluster set
            this.clusterhashes = this.peers.clusterHashes(getConfig("cluster.peers.yacydomain", ""));
            
            
            // after all clean up is done, check the resource usage
            observer.resourceObserverJob();
            
            return hasDoneSomething;
        } catch (final InterruptedException e) {
            this.log.logInfo("cleanupJob: Shutdown detected");
            return false;
        }
    }
    
    /**
     * With this function the crawling process can be paused
     * @param jobType 
     */
    public void pauseCrawlJob(final String jobType) {
        final Object[] status = this.crawlJobsStatus.get(jobType);
        synchronized(status[plasmaSwitchboardConstants.CRAWLJOB_SYNC]) {
            status[plasmaSwitchboardConstants.CRAWLJOB_STATUS] = Boolean.TRUE;
        }
        setConfig(jobType + "_isPaused", "true");
    }  
    
    /**
     * Continue the previously paused crawling
     * @param jobType 
     */
    public void continueCrawlJob(final String jobType) {
        final Object[] status = this.crawlJobsStatus.get(jobType);
        synchronized(status[plasmaSwitchboardConstants.CRAWLJOB_SYNC]) {
            if (((Boolean)status[plasmaSwitchboardConstants.CRAWLJOB_STATUS]).booleanValue()) {
                status[plasmaSwitchboardConstants.CRAWLJOB_STATUS] = Boolean.FALSE;
                status[plasmaSwitchboardConstants.CRAWLJOB_SYNC].notifyAll();
            }
        }
        setConfig(jobType + "_isPaused", "false");
    } 
    
    /**
     * @param jobType 
     * @return <code>true</code> if crawling was paused or <code>false</code> otherwise
     */
    public boolean crawlJobIsPaused(final String jobType) {
        final Object[] status = this.crawlJobsStatus.get(jobType);
        synchronized(status[plasmaSwitchboardConstants.CRAWLJOB_SYNC]) {
            return ((Boolean)status[plasmaSwitchboardConstants.CRAWLJOB_STATUS]).booleanValue();
        }
    }
    
    public indexingQueueEntry parseDocument(final indexingQueueEntry in) {
        in.queueEntry.updateStatus(IndexingStack.QUEUE_STATE_PARSING);
        
        // debug
        if (log.isFinest()) log.logFinest("PARSE "+ in.queueEntry.toString());
        
        plasmaParserDocument document = null;
        try {
            document = parseDocument(in.queueEntry);
        } catch (final InterruptedException e) {
            document = null;
        } catch (final Exception e) {
            document = null;
        }
        if (document == null) {
            in.queueEntry.close();
            return null;
        }
        return new indexingQueueEntry(in.queueEntry, document, null);
    }
    
    private plasmaParserDocument parseDocument(final IndexingStack.QueueEntry entry) throws InterruptedException {
        plasmaParserDocument document = null;
        final int processCase = entry.processCase();
        
        if (this.log.isFine()) log.logFine("processResourceStack processCase=" + processCase +
                ", depth=" + entry.depth() +
                ", maxDepth=" + ((entry.profile() == null) ? "null" : Integer.toString(entry.profile().depth())) +
                ", must-match=" + ((entry.profile() == null) ? "null" : entry.profile().mustMatchPattern().toString()) +
                ", must-not-match=" + ((entry.profile() == null) ? "null" : entry.profile().mustNotMatchPattern().toString()) +
                ", initiatorHash=" + entry.initiator() +
                //", responseHeader=" + ((entry.responseHeader() == null) ? "null" : entry.responseHeader().toString()) +
                ", url=" + entry.url()); // DEBUG
        
        // PARSE CONTENT
        final long parsingStartTime = System.currentTimeMillis();

        try {
            // parse the document
            document = parser.parseSource(entry.url(), entry.getMimeType(), entry.getCharacterEncoding(), plasmaHTCache.getResourceContent(entry.url()));
            assert(document != null) : "Unexpected error. Parser returned null.";
            if (document == null) return null;
        } catch (final ParserException e) {
            this.log.logInfo("Unable to parse the resource '" + entry.url() + "'. " + e.getMessage());
            addURLtoErrorDB(entry.url(), entry.referrerHash(), entry.initiator(), entry.anchorName(), e.getErrorCode());
            if (document != null) {
                document.close();
                document = null;
            }
            return null;
        }
        
        final long parsingEndTime = System.currentTimeMillis();            
        
        // get the document date
        final Date docDate = entry.getModificationDate();
        
        // put anchors on crawl stack
        final long stackStartTime = System.currentTimeMillis();
        if (
                ((processCase == plasmaSwitchboardConstants.PROCESSCASE_4_PROXY_LOAD) || (processCase == plasmaSwitchboardConstants.PROCESSCASE_5_LOCAL_CRAWLING)) &&
                ((entry.profile() == null) || (entry.depth() < entry.profile().depth()))
        ) {
            final Map<yacyURL, String> hl = document.getHyperlinks();
            final Iterator<Map.Entry<yacyURL, String>> i = hl.entrySet().iterator();
            yacyURL nextUrl;
            Map.Entry<yacyURL, String> nextEntry;
            while (i.hasNext()) {
                // check for interruption
                checkInterruption();
                
                // fetching the next hyperlink
                nextEntry = i.next();
                nextUrl = nextEntry.getKey();
                String u = nextUrl.toNormalform(true, true);
                if (!(u.startsWith("http") || u.startsWith("ftp"))) continue;
                // enqueue the hyperlink into the pre-notice-url db
                crawlStacker.enqueueEntry(new CrawlEntry(
                        entry.initiator(),
                        nextUrl,
                        entry.url().hash(),
                        nextEntry.getValue(),
                        null,
                        docDate,
                        entry.profile().handle(),
                        entry.depth() + 1,
                        0,
                        0
                        ));
            }
            final long stackEndTime = System.currentTimeMillis();
            if (log.isInfo()) log.logInfo("CRAWL: ADDED " + hl.size() + " LINKS FROM " + entry.url().toNormalform(false, true) +
                    ", NEW CRAWL STACK SIZE IS " + crawlQueues.noticeURL.stackSize(NoticedURL.STACK_TYPE_CORE) +
                    ", STACKING TIME = " + (stackEndTime-stackStartTime) +
                    ", PARSING TIME = " + (parsingEndTime-parsingStartTime));
        }
        return document;
    }
    
    public indexingQueueEntry condenseDocument(final indexingQueueEntry in) {
        in.queueEntry.updateStatus(IndexingStack.QUEUE_STATE_CONDENSING);
        
        // debug
        if (log.isFinest()) log.logFinest("CONDENSE "+ in.queueEntry.toString());
        
        // strip out words and generate statistics
        if (this.log.isFine()) log.logFine("Condensing for '" + in.queueEntry.url().toNormalform(false, true) + "'");
        try {
            Condenser condenser = new Condenser(in.document, in.queueEntry.profile().indexText(), in.queueEntry.profile().indexMedia());

            // update image result list statistics
            // its good to do this concurrently here, because it needs a DNS lookup
            // to compute a URL hash which is necessary for a double-check
            final CrawlProfile.entry profile = in.queueEntry.profile();
            ResultImages.registerImages(in.document, (profile == null) ? true : !profile.remoteIndexing());
            
            return new indexingQueueEntry(in.queueEntry, in.document, condenser);
        } catch (final UnsupportedEncodingException e) {
            in.queueEntry.close();
            return null;
        }
    }
    
    public indexingQueueEntry webStructureAnalysis(final indexingQueueEntry in) {
        in.queueEntry.updateStatus(IndexingStack.QUEUE_STATE_STRUCTUREANALYSIS);
        in.document.notifyWebStructure(webStructure, in.condenser, in.queueEntry.getModificationDate());
        return in;
    }
   
    public void storeDocumentIndex(final indexingQueueEntry in) {
        in.queueEntry.updateStatus(IndexingStack.QUEUE_STATE_INDEXSTORAGE);
        storeDocumentIndex(in.queueEntry, in.document, in.condenser);
        in.queueEntry.updateStatus(IndexingStack.QUEUE_STATE_FINISHED);
        in.queueEntry.close();
    }
    
    private void storeDocumentIndex(final IndexingStack.QueueEntry queueEntry, final plasmaParserDocument document, final Condenser condenser) {
        
        // CREATE INDEX
        final String dc_title = document.dc_title();
        final yacyURL referrerURL = queueEntry.referrerURL(this.indexSegment.urlMetadata());
        final int processCase = queueEntry.processCase();

        // remove stopwords                        
        log.logInfo("Excluded " + condenser.excludeWords(stopwords) + " words in URL " + queueEntry.url());

        // STORE URL TO LOADED-URL-DB
        URLMetadataRow newEntry = null;
        try {
            newEntry = indexSegment.storeDocument(
                    queueEntry.url(),
                    referrerURL,
                    queueEntry.getModificationDate(),
                    queueEntry.size(),
                    document,
                    condenser);
            RSSFeed.channels((queueEntry.initiator().equals(peers.mySeed().hash)) ? RSSFeed.LOCALINDEXING : RSSFeed.REMOTEINDEXING).addMessage(new RSSMessage("Indexed web page", dc_title, queueEntry.url().toNormalform(true, false)));
        } catch (final IOException e) {
            if (this.log.isFine()) log.logFine("Not Indexed Resource '" + queueEntry.url().toNormalform(false, true) + "': process case=" + processCase);
            addURLtoErrorDB(queueEntry.url(), referrerURL.hash(), queueEntry.initiator(), dc_title, "error storing url: " + e.getMessage());
            return;
        }
        
        // update url result list statistics
        crawlResults.stack(
                newEntry,                      // loaded url db entry
                queueEntry.initiator(),        // initiator peer hash
                this.peers.mySeed().hash, // executor peer hash
                processCase                    // process case
        );
        
        // STORE WORD INDEX
        if ((!queueEntry.profile().indexText()) && (!queueEntry.profile().indexMedia())) {
            if (this.log.isFine()) log.logFine("Not Indexed Resource '" + queueEntry.url().toNormalform(false, true) + "': process case=" + processCase);
            addURLtoErrorDB(queueEntry.url(), referrerURL.hash(), queueEntry.initiator(), dc_title, "unknown indexing process case"  + processCase);
            return;
        }
        
        // increment number of indexed urls
        indexedPages++;
        
        // update profiling info
        if (System.currentTimeMillis() - lastPPMUpdate > 20000) {
            // we don't want to do this too often
            updateMySeed();
            serverProfiling.update("ppm", Long.valueOf(currentPPM()), true);
            lastPPMUpdate = System.currentTimeMillis();
        }
        serverProfiling.update("indexed", queueEntry.url().toNormalform(true, false), false);
        
        // if this was performed for a remote crawl request, notify requester
        final yacySeed initiatorPeer = queueEntry.initiatorPeer();
        if ((processCase == plasmaSwitchboardConstants.PROCESSCASE_6_GLOBAL_CRAWLING) && (initiatorPeer != null)) {
            log.logInfo("Sending crawl receipt for '" + queueEntry.url().toNormalform(false, true) + "' to " + initiatorPeer.getName());
            if (clusterhashes != null) initiatorPeer.setAlternativeAddress(clusterhashes.get(initiatorPeer.hash.getBytes()));
            // start a thread for receipt sending to avoid a blocking here
            new Thread(new receiptSending(initiatorPeer, newEntry), "sending receipt to " + initiatorPeer.hash).start();
        }
    }
    
    public class receiptSending implements Runnable {
        yacySeed initiatorPeer;
        URLMetadataRow reference;
        
        public receiptSending(final yacySeed initiatorPeer, final URLMetadataRow reference) {
            this.initiatorPeer = initiatorPeer;
            this.reference = reference;
        }
        public void run() {
            yacyClient.crawlReceipt(peers.mySeed(), initiatorPeer, "crawl", "fill", "indexed", reference, "");
        }
    }
    
    private static SimpleDateFormat DateFormat1 = new SimpleDateFormat("EEE, dd MMM yyyy");
    public static String dateString(final Date date) {
        if (date == null) return "";
        return DateFormat1.format(date);
    }
    
    // we need locale independent RFC-822 dates at some places
    private static SimpleDateFormat DateFormatter822 = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss Z", Locale.US);
    public static String dateString822(final Date date) {
        if (date == null) return "";
        try {
        	return DateFormatter822.format(date);
        } catch (Exception e) {
        	e.printStackTrace();
        	return DateFormatter822.format(new Date());
        }
    }
    
    
    public serverObjects action(final String actionName, final serverObjects actionInput) {
        // perform an action. (not used)    
        return null;
    }
    
    public String toString() {
        // it is possible to use this method in the cgi pages.
        // actually it is used there for testing purpose
        return "PROPS: " + super.toString() + "; QUEUE: " + crawler.queuePreStack.toString();
    }
    
    // method for index deletion
    public int removeAllUrlReferences(final yacyURL url, final boolean fetchOnline) {
        return removeAllUrlReferences(url.hash(), fetchOnline);
    }
    
    public int removeAllUrlReferences(final String urlhash, final boolean fetchOnline) {
        // find all the words in a specific resource and remove the url reference from every word index
        // finally, delete the url entry
        
        if (urlhash == null) return 0;
        // determine the url string
        final URLMetadataRow entry = indexSegment.urlMetadata().load(urlhash, null, 0);
        if (entry == null) return 0;
        final URLMetadataRow.Components metadata = entry.metadata();
        if (metadata.url() == null) return 0;
        
        InputStream resourceContent = null;
        try {
            // get the resource content
            Object[] resource = null;
            try {
                resource = plasmaSnippetCache.getResource(metadata.url(), fetchOnline, 10000, true, false);
            } catch (IOException e) {
                Log.logWarning("removeAllUrlReferences", "cannot load: " + e.getMessage());
            }
            if (resource == null) {
                // delete just the url entry
                indexSegment.urlMetadata().remove(urlhash);
                return 0;
            } else {
                resourceContent = (InputStream) resource[0];
                final Long resourceContentLength = (Long) resource[1];
                
                // parse the resource
                final plasmaParserDocument document = plasmaSnippetCache.parseDocument(metadata.url(), resourceContentLength.longValue(), resourceContent);
                
                // get the word set
                Set<String> words = null;
                try {
                    words = new Condenser(document, true, true).words().keySet();
                } catch (final UnsupportedEncodingException e) {
                    e.printStackTrace();
                }
                
                // delete all word references
                int count = 0;
                if (words != null) count = indexSegment.termIndex().remove(Word.words2hashes(words), urlhash);
                
                // finally delete the url entry itself
                indexSegment.urlMetadata().remove(urlhash);
                return count;
            }
        } catch (final ParserException e) {
            return 0;
        } catch (IOException e) {
            e.printStackTrace();
            return 0;
        } finally {
            if (resourceContent != null) try { resourceContent.close(); } catch (final Exception e) {/* ignore this */}
        }
    }

    public int adminAuthenticated(final httpRequestHeader requestHeader) {
        
        // authorization for localhost, only if flag is set to grant localhost access as admin
        final String clientIP = (String) requestHeader.get(httpRequestHeader.CONNECTION_PROP_CLIENTIP, "");
        final String refererHost = requestHeader.refererHost();
        final boolean accessFromLocalhost = serverCore.isLocalhost(clientIP) && (refererHost.length() == 0 || serverCore.isLocalhost(refererHost));
        if (getConfigBool("adminAccountForLocalhost", false) && accessFromLocalhost) return 3; // soft-authenticated for localhost
        
        // get the authorization string from the header
        final String authorization = ((String) requestHeader.get(httpRequestHeader.AUTHORIZATION, "xxxxxx")).trim().substring(6);
        
        // security check against too long authorization strings
        if (authorization.length() > 256) return 0; 
        
        // authorization by encoded password, only for localhost access
        final String adminAccountBase64MD5 = getConfig(httpd.ADMIN_ACCOUNT_B64MD5, "");
        if (accessFromLocalhost && (adminAccountBase64MD5.equals(authorization))) return 3; // soft-authenticated for localhost

        // authorization by hit in userDB
        if (userDB.hasAdminRight((String) requestHeader.get(httpRequestHeader.AUTHORIZATION, "xxxxxx"), ((String) requestHeader.get(httpRequestHeader.CONNECTION_PROP_CLIENTIP, "")), requestHeader.getHeaderCookies())) return 4; //return, because 4=max

        // authorization with admin keyword in configuration
        return httpd.staticAdminAuthenticated(authorization, this);
    }
    
    public boolean verifyAuthentication(final httpRequestHeader header, final boolean strict) {
        // handle access rights
        switch (adminAuthenticated(header)) {
        case 0: // wrong password given
            try { Thread.sleep(3000); } catch (final InterruptedException e) { } // prevent brute-force
            return false;
        case 1: // no password given
            return false;
        case 2: // no password stored
            return !strict;
        case 3: // soft-authenticated for localhost only
            return true;
        case 4: // hard-authenticated, all ok
            return true;
        }
        return false;
    }
    
    public void setPerformance(int wantedPPM) {
        // we consider 3 cases here
        //         wantedPPM <=   10: low performance
        // 10   <  wantedPPM <  1000: custom performance
        // 1000 <= wantedPPM        : maximum performance
        if (wantedPPM <= 10) wantedPPM = 10;
        if (wantedPPM >= 6000) wantedPPM = 6000;
        final int newBusySleep = 60000 / wantedPPM; // for wantedPPM = 10: 6000; for wantedPPM = 1000: 60

        serverBusyThread thread;
        
        thread = getThread(plasmaSwitchboardConstants.INDEX_DIST);
        if (thread != null) {
            setConfig(plasmaSwitchboardConstants.INDEX_DIST_BUSYSLEEP , thread.setBusySleep(Math.max(2000, thread.setBusySleep(newBusySleep * 2))));
            thread.setIdleSleep(30000);
        }
        
        thread = getThread(plasmaSwitchboardConstants.CRAWLJOB_LOCAL_CRAWL);
        if (thread != null) {
        	setConfig(plasmaSwitchboardConstants.CRAWLJOB_LOCAL_CRAWL_BUSYSLEEP , thread.setBusySleep(newBusySleep));
        	thread.setIdleSleep(2000);
        }
        
        thread = getThread(plasmaSwitchboardConstants.INDEXER);
        if (thread != null) {
            setConfig(plasmaSwitchboardConstants.INDEXER_BUSYSLEEP , thread.setBusySleep(newBusySleep / 8));
            thread.setIdleSleep(2000);
        }
        
    }
    
    public static int accessFrequency(final HashMap<String, TreeSet<Long>> tracker, final String host) {
    	// returns the access frequency in queries per hour for a given host and a specific tracker
    	final long timeInterval = 1000 * 60 * 60;
    	final TreeSet<Long> accessSet = tracker.get(host);
    	if (accessSet == null) return 0;
    	return accessSet.tailSet(Long.valueOf(System.currentTimeMillis() - timeInterval)).size();
    }
    
    public String dhtShallTransfer() {
    	if (onlineCaution()) {
            return "online caution, dht transmission";
        }
    	if (this.peers == null) {
            return "no DHT distribution: seedDB == null";
        }
        if (this.peers.mySeed() == null) {
            return "no DHT distribution: mySeed == null";
        }
        if (this.peers.mySeed().isVirgin()) {
            return "no DHT distribution: status is virgin";
        }
        if (this.peers.noDHTActivity()) {
            return "no DHT distribution: network too small";
        }
        if (!this.getConfigBool("network.unit.dht", true)) {
            return "no DHT distribution: disabled by network.unit.dht";
        }
        if (getConfig(plasmaSwitchboardConstants.INDEX_DIST_ALLOW, "false").equalsIgnoreCase("false")) {
            return "no DHT distribution: not enabled (ser setting)";
        }
        if (indexSegment.urlMetadata().size() < 10) {
            return "no DHT distribution: loadedURL.size() = " + indexSegment.urlMetadata().size();
        }
        if (indexSegment.termIndex().sizesMax() < 100) {
            return "no DHT distribution: not enough words - wordIndex.size() = " + indexSegment.termIndex().sizesMax();
        }
        if ((getConfig(plasmaSwitchboardConstants.INDEX_DIST_ALLOW_WHILE_CRAWLING, "false").equalsIgnoreCase("false")) && (crawlQueues.noticeURL.notEmptyLocal())) {
            return "no DHT distribution: crawl in progress: noticeURL.stackSize() = " + crawlQueues.noticeURL.size() + ", sbQueue.size() = " + crawler.queuePreStack.size();
        }
        if ((getConfig(plasmaSwitchboardConstants.INDEX_DIST_ALLOW_WHILE_INDEXING, "false").equalsIgnoreCase("false")) && (crawler.queuePreStack.size() > 1)) {
            return "no DHT distribution: indexing in progress: noticeURL.stackSize() = " + crawlQueues.noticeURL.size() + ", sbQueue.size() = " + crawler.queuePreStack.size();
        }
        return null; // this means; yes, please do dht transfer
    }
    
    public boolean dhtTransferJob() {
    	final String rejectReason = dhtShallTransfer();
        if (rejectReason != null) {
            if (this.log.isFine()) log.logFine(rejectReason);
            return false;
        }
        boolean hasDoneSomething = false;
        if (this.dhtDispatcher.cloudSize() > this.peers.scheme.verticalPartitions() * 4) {
        	log.logInfo("dhtTransferJob: no selection, too many entries in transmission cloud: " + this.dhtDispatcher.cloudSize());
        } else if (MemoryControl.available() < 1024*1024*25) {
        	log.logInfo("dhtTransferJob: no selection, too less memory available : " + (MemoryControl.available() / 1024 / 1024) + " MB");
        } else {
            byte[] startHash = null, limitHash = null;
            int tries = 10;
            while (tries-- > 0) {
            	startHash = PeerSelection.selectTransferStart();
            	assert startHash != null;
            	limitHash = PeerSelection.limitOver(this.peers, startHash);
            	if (limitHash != null) break;
            }
            if (limitHash == null || startHash == null) {
            	log.logInfo("dhtTransferJob: approaching full DHT dispersion.");
            	return false;
            }
	        log.logInfo("dhtTransferJob: selected " + new String(startHash) + " as start hash");
	        log.logInfo("dhtTransferJob: selected " + new String(limitHash) + " as limit hash");
	        try {
	            boolean enqueued = this.dhtDispatcher.selectContainersEnqueueToCloud(
	                    startHash,
	                    limitHash,
	                    dhtMaxContainerCount,
	                    dhtMaxReferenceCount,
	                    5000);
	            hasDoneSomething = hasDoneSomething | enqueued;
	            log.logInfo("dhtTransferJob: result from enqueueing: " + ((enqueued) ? "true" : "false"));
	        } catch (IOException e) {
	            log.logSevere("dhtTransferJob: interrupted with exception: " + e.getMessage(), e);
	            return false;
	        }
        }
        if (this.dhtDispatcher.transmissionSize() >= 10) {
        	log.logInfo("dhtTransferJob: no dequeueing from cloud to transmission: too many concurrent sessions: " + this.dhtDispatcher.transmissionSize());
        } else {
        	boolean dequeued = this.dhtDispatcher.dequeueContainer();
        	hasDoneSomething = hasDoneSomething | dequeued;
        	log.logInfo("dhtTransferJob: result from dequeueing: " + ((dequeued) ? "true" : "false"));
        }
        return hasDoneSomething;
    }

    private void addURLtoErrorDB(
            final yacyURL url, 
            final String referrerHash, 
            final String initiator, 
            final String name, 
            final String failreason
    ) {
        assert initiator != null;
        // create a new errorURL DB entry
        final CrawlEntry bentry = new CrawlEntry(
                initiator, 
                url, 
                referrerHash, 
                (name == null) ? "" : name, 
                new Date(),
                null,
                null,
                0, 
                0, 
                0);
        final ZURL.Entry ee = crawlQueues.errorURL.newEntry(
                bentry, initiator, new Date(),
                0, failreason);
        // store the entry
        ee.store();
        // push it onto the stack
        crawlQueues.errorURL.push(ee);
    }
    
    public int currentPPM() {
        return serverProfiling.countEvents("indexed", 20000) * 3;
    }
    
    public void updateMySeed() {
        if (getConfig("peerName", "anomic").equals("anomic")) {
            // generate new peer name
            setConfig("peerName", yacySeed.makeDefaultPeerName());
        }
        peers.mySeed().put(yacySeed.NAME, getConfig("peerName", "nameless"));
        peers.mySeed().put(yacySeed.PORT, Integer.toString(serverCore.getPortNr(getConfig("port", "8080"))));
        
        //the speed of indexing (pages/minute) of the peer
        final long uptime = (System.currentTimeMillis() - serverCore.startupTime) / 1000;
        peers.mySeed().put(yacySeed.ISPEED, Integer.toString(currentPPM()));
        totalQPM = requestedQueries * 60d / Math.max(uptime, 1d);
        peers.mySeed().put(yacySeed.RSPEED, Double.toString(totalQPM /*Math.max((float) requestcdiff, 0f) * 60f / Math.max((float) uptimediff, 1f)*/ ));
        
        peers.mySeed().put(yacySeed.UPTIME, Long.toString(uptime/60)); // the number of minutes that the peer is up in minutes/day (moving average MA30)
        peers.mySeed().put(yacySeed.LCOUNT, Integer.toString(indexSegment.urlMetadata().size())); // the number of links that the peer has stored (LURL's)
        peers.mySeed().put(yacySeed.NCOUNT, Integer.toString(crawlQueues.noticeURL.size())); // the number of links that the peer has noticed, but not loaded (NURL's)
        peers.mySeed().put(yacySeed.RCOUNT, Integer.toString(crawlQueues.noticeURL.stackSize(NoticedURL.STACK_TYPE_LIMIT))); // the number of links that the peer provides for remote crawling (ZURL's)
        peers.mySeed().put(yacySeed.ICOUNT, Integer.toString(indexSegment.termIndex().sizesMax())); // the minimum number of words that the peer has indexed (as it says)
        peers.mySeed().put(yacySeed.SCOUNT, Integer.toString(peers.sizeConnected())); // the number of seeds that the peer has stored
        peers.mySeed().put(yacySeed.CCOUNT, Double.toString(((int) ((peers.sizeConnected() + peers.sizeDisconnected() + peers.sizePotential()) * 60.0 / (uptime + 1.01)) * 100) / 100.0)); // the number of clients that the peer connects (as connects/hour)
        peers.mySeed().put(yacySeed.VERSION, getConfig("version", ""));
        peers.mySeed().setFlagDirectConnect(true);
        peers.mySeed().setLastSeenUTC();
        peers.mySeed().put(yacySeed.UTC, DateFormatter.UTCDiffString());
        peers.mySeed().setFlagAcceptRemoteCrawl(getConfig("crawlResponse", "").equals("true"));
        peers.mySeed().setFlagAcceptRemoteIndex(getConfig("allowReceiveIndex", "").equals("true"));
        //mySeed.setFlagAcceptRemoteIndex(true);
    }

    public void loadSeedLists() {
        // uses the superseed to initialize the database with known seeds
        
        yacySeed           ys;
        String             seedListFileURL;
        yacyURL            url;
        ArrayList<String>  seedList;
        Iterator<String>   enu;
        int                lc;
        final int          sc = peers.sizeConnected();
        httpResponseHeader header;
        
        yacyCore.log.logInfo("BOOTSTRAP: " + sc + " seeds known from previous run");
        
        // - use the superseed to further fill up the seedDB
        int ssc = 0, c = 0;
        while (true) {
            if (Thread.currentThread().isInterrupted()) break;
            seedListFileURL = sb.getConfig("network.unit.bootstrap.seedlist" + c, "");
            if (seedListFileURL.length() == 0) break;
            c++;
            if (
                    seedListFileURL.startsWith("http://") || 
                    seedListFileURL.startsWith("https://")
            ) {
                // load the seed list
                try {
                    final httpRequestHeader reqHeader = new httpRequestHeader();
                    reqHeader.put(httpRequestHeader.PRAGMA, "no-cache");
                    reqHeader.put(httpRequestHeader.CACHE_CONTROL, "no-cache");
                    reqHeader.put(httpRequestHeader.USER_AGENT, HTTPLoader.yacyUserAgent);
                    
                    url = new yacyURL(seedListFileURL, null);
                    final long start = System.currentTimeMillis();
                    header = httpClient.whead(url.toString(), reqHeader); 
                    final long loadtime = System.currentTimeMillis() - start;
                    if (header == null) {
                        if (loadtime > getConfigLong("bootstrapLoadTimeout", 6000)) {
                            yacyCore.log.logWarning("BOOTSTRAP: seed-list URL " + seedListFileURL + " not available, time-out after " + loadtime + " milliseconds");
                        } else {
                            yacyCore.log.logWarning("BOOTSTRAP: seed-list URL " + seedListFileURL + " not available, no content");
                        }
                    } else if (header.lastModified() == null) {
                        yacyCore.log.logWarning("BOOTSTRAP: seed-list URL " + seedListFileURL + " not usable, last-modified is missing");
                    } else if ((header.age() > 86400000) && (ssc > 0)) {
                        yacyCore.log.logInfo("BOOTSTRAP: seed-list URL " + seedListFileURL + " too old (" + (header.age() / 86400000) + " days)");
                    } else {
                        ssc++;
                        final byte[] content = httpClient.wget(url.toString(), reqHeader, (int) getConfigLong("bootstrapLoadTimeout", 20000));
                        seedList = FileUtils.strings(content, "UTF-8");
                        enu = seedList.iterator();
                        lc = 0;
                        while (enu.hasNext()) {
                            ys = yacySeed.genRemoteSeed(enu.next(), null, false);
                            if ((ys != null) &&
                                ((!peers.mySeedIsDefined()) || !peers.mySeed().hash.equals(ys.hash))) {
                                if (peers.peerActions.connectPeer(ys, false)) lc++;
                                //seedDB.writeMap(ys.hash, ys.getMap(), "init");
                                //System.out.println("BOOTSTRAP: received peer " + ys.get(yacySeed.NAME, "anonymous") + "/" + ys.getAddress());
                                //lc++;
                            }
                        }
                        yacyCore.log.logInfo("BOOTSTRAP: " + lc + " seeds from seed-list URL " + seedListFileURL + ", AGE=" + (header.age() / 3600000) + "h");
                    }
                    
                } catch (final IOException e) {
                    // this is when wget fails, commonly because of timeout
                    yacyCore.log.logWarning("BOOTSTRAP: failed (1) to load seeds from seed-list URL " + seedListFileURL + ": " + e.getMessage());
                } catch (final Exception e) {
                    // this is when wget fails; may be because of missing internet connection
                    yacyCore.log.logSevere("BOOTSTRAP: failed (2) to load seeds from seed-list URL " + seedListFileURL + ": " + e.getMessage(), e);
                }
            }
        }
        yacyCore.log.logInfo("BOOTSTRAP: " + (peers.sizeConnected() - sc) + " new seeds while bootstraping.");
    }
    
    public void checkInterruption() throws InterruptedException {
        final Thread curThread = Thread.currentThread();
        if ((curThread instanceof serverThread) && ((serverThread)curThread).shutdownInProgress()) throw new InterruptedException("Shutdown in progress ...");
        else if (this.terminate || curThread.isInterrupted()) throw new InterruptedException("Shutdown in progress ...");
    }

    public void terminate(final long delay) {
        if (delay <= 0) throw new IllegalArgumentException("The shutdown delay must be greater than 0.");
        (new delayedShutdown(this,delay)).start();
    }
    
    public void terminate() {
        this.terminate = true;
        this.shutdownSync.V();
    }
    
    public boolean isTerminated() {
        return this.terminate;
    }
    
    public boolean waitForShutdown() throws InterruptedException {
        this.shutdownSync.P();
        dhtDispatcher.close();
        return this.terminate;
    }

    /**
     * loads the url as Map
     * 
     * Strings like abc=123 are parsed as pair: abc => 123
     * 
     * @param url
     * @return
     */
    public static Map<String, String> loadHashMap(final yacyURL url) {
        try {
            // sending request
            final httpRequestHeader reqHeader = new httpRequestHeader();
            reqHeader.put(httpRequestHeader.USER_AGENT, HTTPLoader.yacyUserAgent);
            final HashMap<String, String> result = FileUtils.table(httpClient.wget(url.toString(), reqHeader, 10000), "UTF-8");
            if (result == null) return new HashMap<String, String>();
            return result;
        } catch (final Exception e) {
            return new HashMap<String, String>();
        }
    }
}

class delayedShutdown extends Thread {
    private final plasmaSwitchboard sb;
    private final long delay;
    public delayedShutdown(final plasmaSwitchboard sb, final long delay) {
        this.sb = sb;
        this.delay = delay;
    }
    
    public void run() {
        try {
            Thread.sleep(delay);
        } catch (final InterruptedException e) {
            sb.getLog().logInfo("interrupted delayed shutdown");
        } catch (final Exception e) {
            e.printStackTrace();
        }
        this.sb.terminate();
    }
}